EXHAUST STRUCTURE AND HEAT EXCHANGER

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a U.S. national phase application under 35 U.S.C. § 371 based upon international patent application No. PCT/CN2023/081290, filed on Mar. 14, 2023, which itself claims priority to Chinese patent application No. 202211390286.X, filed on Nov. 8, 2022, and titled “EXHAUST STRUCTURE AND HEAT EXCHANGER”. The contents of the above identified applications are hereby incorporated herein in their entireties by reference.

TECHNICAL FIELD

The present disclosure relates to the field of heat exchanger technology, and in particular, to an exhaust structure and a heat exchanger.

BACKGROUND

In generally, a heat exchanger uses a refrigerant as a medium for heat exchanging. Since there is a large amount of air in the heat exchanger, the gas in the heat exchanger is required to be discharged during a process of injecting the refrigerant into the heat exchanger. Since a density of the gas is relatively less, in order to discharge the gas in the heat exchanger, the heat exchanger is generally provided with an exhaust pipeline at a highest portion thereof, but an arrangement of the exhaust pipeline may increase a volume of the heat exchanger, resulting in affecting an installation of the heat exchanger in a vehicle.

SUMMARY

According to various embodiments of the present disclosure, an exhaust structure and a heat exchanger are provided, so as to solve a problem of a related exhaust method resulting in increasing a volume of the heat exchanger and then affecting an installation of the heat exchanger.

In the present disclosure, the exhaust structure includes a first manifold, a suction pipe and a liquid output pipe. The first manifold is disclosed along a vertical direction of the exhaust structure. The liquid output pipe is disclosed between a top of the first manifold and a bottom of the first manifold and connected to and in communication with the first manifold. An inner size of the liquid output pipe has a tendency of gradually increasing and then gradually decreasing along a liquid output direction of the liquid output pipe. One end of the suction pipe is disposed in the first manifold and extends to the top of the first manifold along the vertical direction of the exhaust structure, and the other end of the suction pipe extends in the liquid output pipe and to a part of the liquid output pipe with a minimum size is located and in communication with the liquid output pipe.

In an embodiment, the exhaust structure further includes a suspension ring. The suspension ring is sleeved on the end of the suction pipe disposed in the first manifold and in fit with an outer wall of the suction pipe in a movable and sealing manner. A density of the suspension ring is defined as p and a density of a fluid in the first manifold is defined as q. The density p of the suspension ring and the density q of the fluid of the first manifold satisfy following formula: 0.99q≤p<q. The end of the suction pipe extending towards the top of the first manifold is vertically disclosed. A size of the suspension ring along the vertical direction of the exhaust structure is greater than a distance between a top of the suction pipe and a highest point of the first manifold. By such arrangement, a gas in the first manifold can be totally discharged, and a liquid in the first manifold will not enter to the suction pipe, thereby effectively avoiding a residual gas in the first manifold.

In an embodiment, the liquid output pipe includes a contraction section and an expansion section connected to and in communication with each other in sequence along the liquid output direction of the liquid output pipe. An inner size of the contraction section gradually decreases and an inner size of the expansion section gradually increases along the liquid output direction of the liquid output pipe. An inclination of an inner wall of the contraction section relative to an axis of the liquid output pipe is greater than that of an inner wall of the expansion section relative to the axis of the liquid output pipe. By such arrangement, a length of the contraction section is reduced, such that a total length of the liquid output pipe is reduced, so as to reduce a volume of the exhaust structure. In addition, by such arrangement, the liquid may be avoided forming a back-flow vortex in the expansion section of the liquid output pipe and a turbulence in the liquid outlet pipe.

In an embodiment, an inner wall of the contraction section extends in a straight line along the liquid output direction of the liquid output pipe.

In an embodiment, an inner wall of the contraction section extends in a curve line along the liquid output direction of the liquid output pipe.

In an embodiment, an inner wall of the liquid output pipe is provided with a snap groove. A part of the end of the suction pipe extending in the liquid output pipe is snapped into the snap groove. An axis of the end of the suction pipe extending in the liquid output pipe is a tangent line of an inner wall of a position where the contraction section is connected to the expansion section. By such arrangement, the gas in the first manifold may enter into the liquid output pipe faster.

In an embodiment, the snap groove is disposed on a top of the liquid output pipe. By such arrangement, the suction pipe occupies a smallest space in the liquid output pipe, and the suction pipe may interfere with a flow of the liquid in the liquid outlet pipe.

In an embodiment, the liquid output pipe further includes a first straight pipe section, a second straight pipe section and a third straight pipe section. The first manifold, the first straight pipe section of the liquid output pipe, the contraction section of the liquid output pipe, the third straight pipe section of the liquid output pipe, the expansion section of the liquid output pipe and the second straight pipe section of the liquid output pipe are connected to and in communication with each other in sequence along the liquid output direction of the liquid output pipe. By such arrangement, an assembly difficulty among the liquid output pipe, a first manifold and external pipelines is reduced.

In an embodiment, a vertical height of the liquid output pipe is defined as h. A total height of the first manifold along the vertical direction is defined as H. The vertical height h of the liquid output pipe and the total height H of the first manifold along the vertical direction of the exhaust structure satisfy following formula: 0.2H<h<0.5H. By such arrangement, a rate of the suction pipe discharging the gas in the first manifold is greatly improved.

In an embodiment, the vertical height h of the liquid output pipe and the total height H of the first manifold along the vertical direction of the exhaust structure satisfy following formula: h=0.3H.

The present disclosure further provides a heat exchanger. The heat exchanger includes a liquid input pipe, a second manifold, a core body and an exhaust structure of any one of the above embodiments. The liquid input pipe is disclosed between a top of the second manifold and a bottom of the second manifold and connected to and in communication with the second manifold. The core body is disclosed between the first manifold and the second manifold and connected to and in communication with the first manifold and the second manifold.

The details of one or more embodiments of the present disclosure are presented in the accompanying drawings and description below. The other features, objectives, and advantages of the present disclosure will become apparent from the specification, drawings, and claims.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to provide a clearer explanation of a technical solution in the embodiments or related technologies of the present disclosure, a brief introduction will be given to the accompanying drawings required for a description of the embodiments or the related technologies. It is obvious that the accompanying drawings described below are only some embodiments of the present disclosure. For the skilled in the art, other drawings may be obtained based on the drawings without a creative labor.

FIG. 1 is a schematic diagram of a heat exchanger in an embodiment of the present disclosure.

FIG. 2 is an exploded diagram of a heat exchanger in an embodiment of the present disclosure.

FIG. 3 is a partial schematic diagram of an exhaust structure in an embodiment of the present disclosure.

FIG. 4 is a partial enlarged view of portion A in FIG. 3.

FIG. 5 is a partial enlarged view of portion B in FIG. 3.

FIG. 6 is a cross-sectional view of a liquid output pipe of an exhaust structure in an embodiment of the present disclosure.

FIG. 7 is a partial cross-sectional view of an exhaust structure in an embodiment of the present disclosure.

Reference signal are as follows: 100 represents a first manifold; 200 represents a suction pipe; 210 represents an anti-rotation slope; 220 represents a snap ring; 300 represents a liquid output pipe; 310 represents a contraction section; 311 represents a snap groove; 320 represents an expansion section; 330 represents a first straight pipe section; 340 represents a second straight pipe section; 350 represents a third straight pipe section; 400 represents a resisting block; 410 represents a communication groove; 500 represents a fastener; 600 represents a liquid input pipe; 700 represents a second manifold; 800 represents a core body; and 900 represents a suspension ring.

DETAILED DESCRIPTION

A technical scheme in embodiments of the present disclosure will be described clearly and completely with attached drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, not the whole embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by the ordinary skill in the art without a creative labor belong to a scope of protection of the present disclosure.

In the description of the present disclosure, it should be understood that the terms “center”, “longitudinal”, “transversely”, “length”, “width”, “thickness”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential” and so on denoting an orientation or a position relationship are based on the orientation or the position relationship shown in the attached drawings, it is just for convenience and simple to describe the present disclosure, but not indicating or implying an apparatus and a device having a specific orientation, constructing and operating in a specific orientation, therefore cannot be understood as limiting the present disclosure.

In addition, the terms “first” and “second” are only used to describe the purpose and not be understood as indicating or implying relative importance or implying the quantity of indicated technical features. Therefore, the features limited to “first” and “second” can explicitly or implicitly include at least one of these features. In the description of the present disclosure, “multiple” means at least two, such as two, three, etc., unless there is an otherwise specific limitation.

In the present disclosure, unless otherwise specified and limited, the terms “installation”, “contact”, “connection”, “fixation” and so on should be broadly understood. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; and it may be directly connected or indirectly connected through an intermediate medium, and may be a connection within two components or an interaction relationship between two components, unless otherwise specified. For ordinary skilled in the field, the specific meanings of the above terms in the present disclosure may be understood as required.

In the present disclosure, unless there is the otherwise specifications and limitations, the first feature is “above” or “below” the second feature which may be a direct contact between the first and second features, or the first features and the second features may be in indirect contact through an intermediate medium. Moreover, the first feature is “on”, “above”, and “over” the second feature can be that the first feature is directly or diagonally above the second feature, or only indicates that the first feature is horizontally higher than the second feature. The first feature is “beneath”, “below”, and “under” the second feature can be that the first feature is directly or diagonally below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

It should be noted that, when a member is considered “fixed on” or “set on” another member, it can be directly fixed to another member or there may be a centered member present simultaneously. When a member is considered “connected to” another member, it can be directly connected to another member or there may be a centered member present simultaneously. The terms “vertical”, “horizontal”, “left”, “up”, “down”, “right” and similar expressions used in the specification of the present disclosure are for illustrative purposes only and do not represent the only implementation method.

Unless otherwise defined, all technical and scientific terms used in this article have the same meanings as those commonly understood by those skilled in the art of the present disclosure. The terms used in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term “and/or” used in this article includes any and all combinations of one or more related listed items.

Commonly, in a heat exchanger, a refrigerant is used as a medium for a heat exchange, but due to a large amount of air inside the heat exchanger, a residual gas is required to be discharged during a refrigerant filling process. In addition, due to a low gas density, an exhaust pipeline is generally installed at a highest portion of the heat exchanger to discharge a gas in the heat exchanger, however, an installation of the exhaust pipe will increase a volume of the heat exchanger, which in turn affects the installation of the exhaust pipe in a vehicle.

Referring to FIGS. 1 to 7, in order to solve a problem of related exhaust method increasing the volume of the heat exchanger and affecting an installation of the heat exchanger. The present disclosure further provides an exhaust structure. The exhaust structure includes a first manifold 100, a suction pipe 200 and a liquid output pipe 300. The first manifold 100 is disclosed along a vertical direction of the exhaust structure. The liquid output pipe 300 is disclosed between a top of the first manifold 100 and a bottom of the first manifold 100 and connected to and in communication with the first manifold 100. An inner size of the liquid output pipe 300 has a tendency of gradually increasing and then gradually decreasing along a liquid output direction of the liquid output pipe 300. One end of the suction pipe 200 is disposed in the first manifold 100 and extends to the top of the first manifold 100 along the vertical direction of the exhaust structure. The other end of the suction pipe 200 extends in the liquid output pipe 300 and to a position where a part of the liquid output pipe 300 with a minimum size is located and in communication with the liquid output pipe 300.

Since the inner size of the liquid output pipe 300 has the tendency of gradually increasing and then decreasing along the liquid output direction of the liquid output pipe 300, such that when a liquid flows from the first manifold 100 to the liquid output pipe 300 and along the liquid output direction of the liquid output direction 300, a flow velocity of the liquid increases and then decreases, furthermore, the flow velocity of the liquid is maximum at a position where the inner size of the liquid output pipe is minimum. According to a Venturi effect, a low pressure will be generated near a high-speed flowing fluid, resulting in an adsorption effect. Furthermore, the gas at the top of the first manifold 100 may be squeezed by the liquid. Therefore, the gas at the top of the first manifold 100 may be suctioned into the liquid output pipe 300 by the suction pipe 200 and discharged by the liquid in the liquid output pipe 300 by the suction pipe 200. Since one end of the suction pipe 200 is disposed in the first manifold 100, and the other end of the suction pipe 200 is disposed in the liquid output pipe, such that an arrangement of the suction pipe 200 will not increase a volume of the exhaust structure and a volume of the whole heat exchanger, and the gas in the heat exchanger may be effectively discharged, and an installation difficulty of the heat exchanger due to a large volume of the heat exchanger may be avoided.

In the present disclosure, the fluid includes but is not limited to a refrigerant.

A whole suction pipe 200 is in an L shape.

In an embodiment, referring to FIG. 6, the liquid output pipe 300 includes a contraction section 310 and an expansion section 320 connected to and in communication with each other in sequence along the liquid output direction of the liquid output pipe 300. An inner size of the contraction section 310 gradually decreases and an inner size of the expansion section 320 gradually increases along the liquid output direction of the liquid output pipe 300. An inclination of an inner wall of the contraction section 310 relative to an axis of the liquid output pipe 300 is greater than that of an inner wall of the expansion section 320 relative to the axis of the liquid output pipe 300.

The inclination of the inner wall of the contraction section 310 relative to the axis of the liquid output pipe 300 is greater than that of the inner wall of the expansion section 320 relative to the axis of the liquid output pipe 300, which means that a concentration amplitude of the inner size of the contraction section 310 is more intense and an expansion concentration of the inner size of the expansion section 320 is smoother.

By such arrangement, a length of the contraction section 310 is reduced, a length of whole liquid output pipe is reduced, so as to reduce a volume of the exhaust structure. By such arrangement, it may be avoided forming a backflow vortex of a liquid in the expansion section 320 of the liquid output pipe 300 and a turbulence in the liquid outlet pipe 300.

In an embodiment, an inner wall of the contraction section 310 may extend in a straight line or a curve line along the liquid output direction of the liquid output pipe 300. Similarly, the inner wall of the expansion section 320 may extend in the straight line or the curve line.

In an embodiment, referring to FIGS. 6 and 7, an inner wall of the liquid output pipe 300 is provided with a snap groove. A part of the end of the suction pipe 200 extending in the liquid output pipe 300 is snapped into the snap groove 311. An axis of the end of the suction pipe 200 extending in the liquid output pipe 300 is a tangent line of an inner wall of a position where the contraction section 310 is connected to the expansion section 320.

A suction force subjected from an inner wall of a position where the contraction section 310 is connected to the expansion section 320. Therefore, by such arrangement, the gas in the first manifold 100 may be suctioned into the liquid output pipe 300 faster. Furthermore, the suction pipe 200 may be prevented from rotating in the liquid output pipe 300 by providing the snap groove 311, resulting in improving stability of the exhaust structure.

Furthermore, in an embodiment, the snap groove 311 is disposed on a top of the liquid output pipe 300.

Therefore, the suction pipe 200 may occupy a smallest space in the liquid output pipe 300, and the suction pipe 200 may interfere with a flow of the liquid in the liquid outlet pipe 300. Moreover, by such arrangement, the gas may be prevented from continuously floating in the liquid output pipe 300 and flowing back to the first manifold 100.

Furthermore, in an embodiment, the liquid output pipe 300 further includes a first straight pipe section 330, a second straight pipe section 340 and a third straight pipe section 350. The first manifold 100, the first straight pipe section 330 of the liquid output pipe 300, the contraction section 310 of the liquid output pipe 300, the third straight pipe section 350 of the liquid output pipe 300, the expansion section 320 of the liquid output pipe 300 and the second straight pipe section 340 of the liquid output pipe 300 are connected to and in communication with each other in sequence along the liquid output direction of the liquid output pipe 300.

Therefore, the liquid output pipe 300 may be assembled on the first manifold 100 by the first straight pipe section 330 of the liquid output pipe 300. In addition, the liquid output pipe 300 may be assembled on external pipelines by the second straight pipe section 340 of the liquid output pipe 300, resulting in reducing an assembling difficulty of the exhaust structure.

In order to improve a rate of discharging the gas in the first manifold 100, in an embodiment, a vertical height of the liquid output pipe 300 is defined as h, a total height of the first manifold 100 along the vertical direction is defined as H, and the vertical height h of the liquid output pipe 300 and the total height H of the first manifold 100 along the vertical direction of the exhaust structure satisfy following formula: 0.2H<h<0.5H.

A descending speed of the liquid in the first manifold 100 is greater than an ascending speed of the liquid in the first manifold 100 due to gravity. An intersection point between a descending liquid and an ascending liquid in the first manifold 100 is located in a range of one fifth of a height of the first manifold 100 to a half of the height of the first manifold 100 by a plurality of simulation experiments. In addition, when the descending liquid intersects with the ascending liquid and then enters to the liquid input pipe 600, a loss of a kinetic energy of the liquid in the first manifold 100 is minimum, i.e., the vertical height h of the liquid output pipe 300 may be set in a range of one fifth of the height of the first manifold 100 to a half of the height of the first manifold 100, such that the loss of the kinetic energy of the liquid in the first manifold 100 is minimum, and i.e., the flow velocity of the liquid in the liquid output pipe 300 may be maximum. In the contract, if the descending liquid intersects with the ascending liquid and then may not immediately flow to the liquid output pipe 300, a liquid after the descending liquid intersecting with the ascending liquid is required to ascend or descend. Therefore, the liquid after the descending liquid intersecting with the ascending liquid will continue to collide with either the ascending liquid or the descending liquid before entering to the liquid outlet pipe 300, such that the loss of the kinetic energy of the liquid in the first manifold 100 further increases. In summary, by such arrangement, the flow velocity of the liquid in the outlet pipe 300 is maximum, i.e., a pressure different between the gas in the top of the first manifold 100 and the fluid in a minimum size of the liquid input pipe 600 is maximum, and i.e., the rate of discharging the gas in the first manifold 100 by the suction pipe 200 is greatly improved.

Furthermore, in an embodiment, the vertical height h of the liquid output pipe 300 and the total height H of the first manifold 100 along the vertical direction of the exhaust structure satisfy the following formula: h=0.3 H.

In order to further improve the rate of discharging the gas in the first manifold 100, in an embodiment, an inner wall of the suction pipe 200 is provided with a spiral groove (not shown), such that the gas may enter to the liquid output pipe 300 along the spiral groove in a spiral manner.

The gas after entering to the suction pipe 200 from an end of the suction pipe 200 towards the top of the first manifold 100 may form a vortex along the spiral groove by the Coriolis force. If in the northern hemisphere, the vortex rotates counterclockwise by the Coriolis force, or if in the southern hemisphere, the vortex rotates clockwise by the Coriolis force. Therefore, by such arrangement, the Coriolis force may play an improving role for the gas vortex in the suction pipe 200, so as to increase the flow velocity of the gas in the suction pipe 200, resulting in improving the discharging ratio of the gas in the first manifold 100.

In an embodiment, the inner wall of the suction pipe 200 is provided with a spiral protrusion (not shown), and the spiral groove is formed by an inner wall of the spiral protrusion and the inner wall of the suction pipe 200 adjacent to each other.

Therefore, a process difficulty of the spiral groove is greatly reduced.

In an embodiment, referring to FIG. 4, the end of the suction pipe 200 extending to the top of the first manifold 100 is provided with an anti-rotation slope 210. The top of the first manifold 100 is provided with a resisting block 400 relative to the anti-rotation slope 210. The resisting block 400 is disclosed on two ends of the anti-rotation slope 210 around a circumferential direction of the suction pipe 200, so as to avoid the suction pipe 200 rotating along an axis of the suction pipe 200.

Therefore, the suction pipe 200 may be avoided rotating along the axis of the suction pipe 200, resulting in greatly improving an assembly firmness of the exhaust structure.

In an embodiment, the resisting block 400 is provided with a fitting bevel (not shown) relative to the anti-rotation slope 210, and the resisting block 400 is in contact with the anti-rotation slope 210 by the fitting bevel 210.

Therefore, the resisting block 400 cooperates with the suction pipe 200 more tightly.

Furthermore, in an embodiment, referring to FIG. 4, the resisting block 400 is provided with a communication groove 410. The communication groove 410 includes a first opening disposed on a bottom of the resisting block 400 and a second opening disposed on a side of the resisting block 400. The communication groove 410 is in communication with the suction pipe 200 by the first opening disposed on the bottom of the resisting block 400. The communication groove 410 is in communication with the first manifold 100 by the second opening disposed on the side of the resisting block 400.

Therefore, the phenomenon that the gas in the first manifold 100 being suctioned by the suction pipe 200 is affected by the resisting block 400 can be avoided.

In an embodiment, referring to FIGS. 3 and 5, the exhaust structure further includes a plurality of fasteners 500. One end of each of the plurality of fasteners 500 is detachably connected to an inner wall of the first manifold 100, the other end of each of the plurality of fasteners 500 is snapped on an outer wall of the suction pipe 200, and the plurality of fasteners 500 are separated from each other along an extending direction of the suction pipe 200.

Therefore, the suction pipe 200 may be avoided from shocking in the first manifold 100, resulting in improving stability of the exhaust structure.

Furthermore, in an embodiment, referring to FIG. 5, the outer wall of the suction pipe 200 is provided with a plurality of snap rings 220. Each of the plurality of snap rings 220 is restricted on two sides of each of the plurality of the fasteners 500 along the extending direction of the suction pipe 200.

Therefore, the suction pipe 200 moving up and down in the first manifold 100 may be avoided.

In the present embodiment, the plurality of fasteners 500 may further fit with the resisting block 400 to limit the suction pipe 200 to move up and down.

In generally, if a distance between the end of the suction pipe 200 extending to the top of the first manifold 100 and an end surface of the top of the first manifold 100 is too great, the liquid may be suctioned to the suction pipe 200, such that a large amount of gas may not be discharged in the top of the first manifold 100. In the contrary, if a distance between the end of the suction pipe 200 extending to the top of the first manifold 100 and the end surface of the top of the first manifold 100 is too less, the gas in the top of the first manifold 100 may be hard to be suctioned into the suction pipe 200, resulting in a low discharging effect of the gas.

In order to solve a problem that the distance between the end of the suction pipe 200 extending to the top of the first manifold 100 and the end surface of the top of the first manifold 100 is hard to control, in an embodiment, the exhaust structure further includes a suspension ring 900. The suspension ring 900 is sleeved on the end of the suction pipe 200 disposed in the first manifold 100 and in fit with the outer wall of the suction pipe 200 in a movable and sealing manner. A density of the suspension ring 900 is defined as p and a density of a fluid in the first manifold 100 is defined as q. The density p of the suspension ring 900 and the density q of the fluid of the first manifold 100 satisfy following formula: 0.99q≤p<q. The end of the suction pipe 200 extending towards the top of the first manifold 100 is vertically disclosed, and a size of the suspension ring 900 along the vertical direction of the exhaust structure is greater than a distance between a top of the suction pipe 100 and a highest point of the first manifold 200.

Since the end of the suction pipe 200 extending to the top of the first manifold 100 is vertically disclosed, and the suspension ring 900 is disposed on the end of the suction pipe extending in the first manifold 100 and in fit with the outer wall of the suction pipe 200 in a movable manner, such that the suspension ring 900 may move up and down along the extending direction of the suction pipe 200. The density p of the suspension ring 900 and the density q of the fluid in the first manifold 100 satisfy the formula: 0.99q≤p<q, such that the suspension ring 900 may suspend on the liquid and the top of the suspension ring 900 is higher than a liquid lever of the liquid. Therefore, as the gas in the first manifold 100 is gradually discharged, the liquid lever of the liquid in the first manifold 100 gradually rises, the suspension ring 900 gradually moves towards the top of the suction pipe 200 along the extending direction of the suction pipe 200. Since the size of the suspension ring 900 along the vertical direction of the exhaust structure is greater than the distance between the top of the suction pipe 200 and the highest point in the first manifold 100, when the liquid lever of the first manifold 100 is higher than the top of the suction pipe 200, the highest point of the suspension ring 900 rises to a position higher than the top of the suction pipe 200 as the liquid lever of the liquid rises, and the suspension ring 900 is in fit with the outer wall of the suction pipe 200 in a sealing manner, such that the liquid may not enter to the suction pipe 200, i.e., the suction pipe 200 still suction the gas in the first manifold 100, and i.e., the residual gas in the first manifold 100 may continuously enter into the suction pipe 200 through the suspension ring 900 until the gas in the first manifold 100 is totally discharged, such that the suspension ring 900 rises to a highest portion of the first manifold 100.

By providing the suspension ring 900, the gas in the first manifold 100 may be totally discharged, and the liquid in the first manifold 100 will not enter into the suction pipe 200, resulting in avoiding the residual gas in the first manifold 100.

Referring to FIGS. 1 and 2, the present disclosure further provides a heat exchanger. The heat exchanger includes a liquid input pipe 600, a second manifold 700, a core body 800 and an exhaust structure described in the above embodiments. The liquid input pipe 600 is disclosed between a top of the second manifold 700 and a bottom of the second manifold 700 and connected to and in communication with the second manifold 700. The core body 800 is disclosed between the first manifold 100 and the second manifold 700 and connected to and in communication with the first manifold 100 and the second manifold 700.

Compared with the related technology, the present disclosure provides the exhaust structure and the heat exchanger. Since the inner wall of the liquid output pipe has the tendency of gradually decreasing and then gradually increasing along the liquid output direction of the liquid output pipe, when the liquid flows from the first manifold to the liquid output pipe and flows along the liquid output direction of the liquid output pipe, the flow velocity of the liquid increases and then decreases, and the flow velocity of the liquid is maximum when the liquid is located at a position where an inner size of the liquid output pipe is minimum. According to the Venturi effect, a low pressure will be generated near the high-speed flowing fluid, resulting in the adsorption effect. In the present disclosure, the fluid includes but is not limited to the liquid. Furthermore, the gas at the top of the first manifold 100 may be squeezed by the liquid. Therefore, by proving the suction pipe, the gas at the top of the first manifold may be suctioned into the liquid output pipe by the suction pipe and carried away by the liquid in the liquid output pipe. Since one end of the suction pipe is disposed in the first manifold, and the other end of the suction pipe is disposed in the liquid output pipe, the arrangement of the suction pipe will not make a volume of the exhaust structure or even a volume of the whole heat exchanger increased, such that the gas in the heat exchanger may be effectively discharged, and the installation difficulty of the heat exchanger due to the large volume of the heat exchanger may be avoided.

The various technical features of the above embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, they should be considered within the scope of the specification.

The above embodiments only express several embodiments of the present disclosure, and their descriptions are more specific and detailed, but should not be understood as limiting the scope of the disclosure. It should be pointed out that for ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the disclosure, which are within the scope of protection of the disclosure. Therefore, the scope of protection of the present disclosure should be based on the attached claims.