CN110459833B

CN110459833B - Heat exchange device

Info

Publication number: CN110459833B
Application number: CN201910648197.2A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2015-07-16
Filing date: 2015-07-16
Publication date: 2023-01-24
Anticipated expiration: 2035-07-16
Also published as: CN106356582A; CN110429358B; CN110459831B; CN110459832B; CN106356582B; CN110459832A; CN110429358A; CN110459833A; CN110459831A

Abstract

A heat exchange device comprises a heat exchanger and a valve body, wherein the valve body comprises an inlet flow passage, an outlet flow passage and a valve core assembly accommodating cavity; the heat exchanger comprises a first flow channel and a second flow channel, and an outlet flow channel is communicated with the first flow channel; the valve body has first step portion and second step portion, and first step portion is located the lateral wall of the export place one side of the exit runner of valve body, second step portion are located the lateral wall of the export place one side of the exit runner of valve body, first step portion protrusion in second step portion, second step portion's height is X, and X's value range is: x is more than or equal to 0.1mm and less than or equal to 1mm, and a certain distance is kept between the outer end part of the second step part and the outer end part of one side wall of the valve body where the second step part is located. The heat exchanger and the valve assembly are directly integrated together, so that the heat exchange device is simple in structure and reliable in performance.

Description

Heat exchange device

The application is a divisional application with the patent application number of 201510422245.8 and the application date of 2015, 7 and 16, and the name of the invention is 'heat exchange device'.

Technical Field

The invention relates to a heat exchange device, which is applied to a heat management system of an electric automobile battery and the like.

Background

Generally, in a battery thermal management system of an electric vehicle, a battery of the electric vehicle generates heat when operating, and in order to ensure normal operation of the battery, the battery needs to be cooled, and cooling with a coolant is a more common method. A common battery cooling device includes a heat exchanger and an expansion valve, a liquid refrigerant enters the heat exchanger after passing through the throttling function of the expansion valve, the refrigerant and a cooling liquid perform heat exchange in the heat exchanger, the cooling liquid is cooled, the cooled cooling liquid flows to a battery pack to cool a battery, the temperature of the cooling liquid after flowing through the battery pack is increased, and the cooling liquid needs to return to the heat exchanger for cooling, and the cycle is performed. Typically, the heat exchanger is a plate heat exchanger.

In the existing heat management system, a heat exchanger and an expansion valve are both independent components and are connected in a pipeline mode and the like. Connecting parts such as pipelines can lead to the fact that the whole assembly is heavy in weight, phenomena such as fracture of a connecting pipe and the like easily occur, and the cost is high.

Therefore, how to directly integrate the heat exchanger and the expansion valve together, so as to make the heat exchanger compact in structure, convenient to install and low in use cost is a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

The invention aims to provide a heat exchange device with simple structure and reliable performance.

To achieve the above object, the present invention provides a heat exchange device.

A heat exchange device comprises a heat exchanger and a valve body, wherein the valve body comprises an inlet flow passage, an outlet flow passage and a valve core assembly accommodating cavity; the heat exchanger comprises a first flow channel and a second flow channel, and the outlet flow channel is communicated with the first flow channel;

the valve body has first step portion and second step portion, first step portion is located the lateral wall of the export place one side of the exit runner of valve body, second step portion is located the lateral wall of the export place one side of the exit runner of valve body, first step portion protrusion in second step portion, the height of second step portion is X, and the value range of X is: x is more than or equal to 0.1mm and less than or equal to 1mm, and a certain distance is kept between the outer end part of the second step part and the outer end part of one side wall of the valve body where the second step part is located.

Above-mentioned technical scheme is with heat exchanger and valve body integration body structure, simple structure, compactness and dependable performance, and the installation of being convenient for and use cost are lower.

Drawings

Fig. 1 is a schematic perspective view of a heat exchange device according to an embodiment of the present invention.

Fig. 2 is an exploded view of the heat exchange device of fig. 1.

Fig. 3 is a perspective view of a mounting plate of the heat exchange device of fig. 1.

Fig. 4 is a schematic cross-sectional view of a valve body of the heat exchange device of fig. 1.

Fig. 5 is a schematic partial cross-sectional view of the heat exchange device of fig. 1.

Fig. 6 is a schematic cross-sectional view of the heat exchange device of fig. 1.

Fig. 7 is a cross-sectional view of another structure of a valve body of the heat exchange device of fig. 1.

Fig. 8 is a schematic view illustrating a valve assembly of the heat exchange device of fig. 1 rotated about a first stepped portion by a.

Fig. 9 is a perspective view of another embodiment of the heat exchange device of the present invention.

Fig. 10 is a schematic cross-sectional view of yet another embodiment of the heat exchange device of the present invention.

Fig. 11 is a schematic cross-sectional view of the valve body of the heat exchange device shown in fig. 10.

Detailed Description

The heat exchange device not only needs less installation space, but also has simple and compact structure, strong reliability, convenient installation, good vibration resistance and lower use cost, and can effectively inhibit the gas-liquid stratification phenomenon.

The invention is described in detail below with reference to the drawings and the following detailed description.

Fig. 1 to 6 show a heat exchange device according to an embodiment of the present invention, and as shown in fig. 1 and 2, the heat exchange device includes a heat exchanger 10, a valve assembly 2, and a mounting plate 3 for fixing the heat exchange device, and at the same time, the mounting plate 3 is used for fixedly connecting the heat exchanger 10 and the valve assembly 2. The valve assembly 2 is a throttling device, and can realize throttling and pressure reduction of a high-pressure refrigerant.

The heat exchanger 10 can be used as an evaporator, and the heat exchanger 10 includes a first flow channel for flowing a cooling liquid and a second flow channel for flowing a refrigerant, wherein the first flow channel includes a refrigerant inlet and a refrigerant outlet, and the second flow channel includes a cooling liquid inlet and a cooling liquid outlet. The coolant inlet may be connected to the second adapter tube 4, the coolant outlet may be connected to the first adapter tube 1, the refrigerant outlet may be connected to the third adapter tube 5, and the refrigerant inlet may communicate with the outlet flow passage 2131 of the valve assembly 2 through the connection hole 32 of the mounting plate. The inlet 211 of the valve assembly 2 may be connected to a fourth connecting pipe (not shown), or may be connected to the system through other types of connecting members.

The heat exchanger 10 further comprises a heat exchange core, and end plates 6 and a bottom plate 7 located at both ends of the heat exchange core. Wherein, the heat transfer core includes a plurality of first circulation board and a plurality of second circulation board that the range upon range of setting at interval each other, and each first circulation board and two adjacent second circulation boards form first circulation passageway and second circulation passageway, and first circulation passageway and second circulation passageway are the interval setting each other. The first flow channel is a part of the first flow channel, and the second flow channel is a part of the second flow channel. In this embodiment, the flow plates 8 having the same shape and structure are used for the first and second flow plates, and when stacking, the first flow plate is rotated 180 ° relative to the second flow plate for stacking. The flow plate 8 with the same shape and structure can save cost.

The refrigerant inlet and the refrigerant outlet, and the cooling liquid inlet and the cooling liquid outlet may be disposed on the same side or different sides of the heat exchanger 10, and may be any two of the four ports. The first connecting pipe 1, the second connecting pipe 4 and the third connecting pipe 5 can be aluminum alloy pipes and are connected with the heat exchanger 10 in a brazing mode; and part or all of the other three connecting pipes can be fixedly connected with the mounting plate 3 through brazing and connected with the heat exchanger 10 through the mounting plate 3.

In the above embodiment, the heat exchanger 10 is a plate heat exchanger, but may be a plate fin heat exchanger, and other types of heat exchangers may be applied similarly.

As shown in fig. 3, the mounting plate 3 may be formed by pressing a metal plate or by machining, and the plate may be made of an aluminum alloy. The mounting plate 3 includes a fitting portion and a plurality of mounting holes 35 located outside the fitting portion. In the mounting direction through the mounting hole 35, the mounting hole 35 is completely exposed to the outside of the heat exchanger 10, and the mounting hole 35 does not interfere with the heat exchange core. In this way, the heat exchanger 10 is not touched when the heat exchanger device is fixed by inserting a screw (not shown) through the mounting hole 35. This design reduces the cost and difficulty of installation of the heat exchange device on the one hand, and also reduces the chance of damage to the heat exchanger 10 during installation.

It should be noted here that the shape structure of the mounting plate 3 and the specific positions and number of the mounting holes 35 may be set as required for the specific mounting position of the heat exchange apparatus.

The fitting portion includes a first through hole 341 for fixedly mounting the first adapter tube 1, a second through hole 342 for fixedly mounting the second adapter tube 4, a third through hole 343 for fixedly mounting the third adapter tube 5, and a fourth through hole 32. Wherein the first and

second pass holes

341 and 342 communicate with the second flow passage of the heat exchanger 10, and the third and

fourth pass holes

343 and 32 communicate with the first flow passage of the heat exchanger 10. In the present embodiment, the first and second through

holes

341 and 342 communicate with the coolant inlet and the coolant outlet of the heat exchanger 10, respectively, and the third and fourth through

holes

343 and 32 communicate with the refrigerant outlet and the refrigerant inlet of the heat exchanger 10, respectively.

First through-hole 341 and coolant liquid import are circular and coaxial or eccentric settings, and the internal diameter of first through-hole 341 is greater than the internal diameter of coolant liquid import to form the step, thereby be convenient for dock and the location with the one end of first takeover 1, be convenient for first takeover 1's installation. Similarly, the second through hole 342 and the coolant outlet are both circular and are coaxially or eccentrically arranged, and the inner diameter of the second through hole 342 is larger than that of the coolant outlet to form a step, so that the second through hole is conveniently butted and positioned with one end of the second connecting pipe 4, and the second connecting pipe 4 is conveniently installed. Similarly, the third through hole 343 and the refrigerant outlet are both circular and coaxial or eccentric, and the inner diameter of the third through hole 343 is greater than the inner diameter of the refrigerant outlet to form a step, so as to be conveniently butted and positioned with one end of the third connecting pipe 5, and facilitate the installation of the third connecting pipe 5.

The fourth through hole 32 and the refrigerant inlet are both circular and coaxially arranged, the inner diameter of the fourth through hole 32 may be smaller than or equal to the inner diameter of the refrigerant inlet, and the inner diameter of the fourth through hole 32 may be smaller than the inner diameter of the third through hole. The outlet flow passage 2131 of the valve assembly 2 communicates with the refrigerant inlet of the heat exchanger through the fourth through hole 32. In order to facilitate the positioning and installation of the valve assembly 2, at least two directional protrusions 31 are further provided on the side of the fourth through hole 32 of the mounting plate 3, and the mounting plate 3 is further provided with two positioning holes.

As shown in fig. 2 to 6, the valve assembly 2 includes a valve body 21, a coil assembly 22 and a spool assembly 23, the valve body 21 includes an inlet flow passage 211, an outlet flow passage 2131 and a spool assembly accommodating cavity 212, the spool assembly accommodating cavity 212 can accommodate at least part of the spool assembly, one end of the spool assembly accommodating cavity 212 is open, and the spool assembly accommodating cavity 212 communicates with the inlet flow passage 211 and the outlet flow passage 2131. The inlet flow passage 211 and the outlet flow passage 2131 are each generally perpendicular to the centerline of the spool assembly receiving cavity 212, and in a direction toward the open end of the spool assembly receiving cavity 212, the inlet flow passage 211 is relatively close to the open end of the spool assembly receiving cavity 212, and the outlet flow passage 2131 is relatively far from the open end of the spool assembly receiving cavity 212. Thus, because the inlet flow passage 211 and the outlet flow passage 2131 are both approximately perpendicular to the center line of the valve core assembly accommodating cavity 212, the angle between the outflow direction of the refrigerant from the orifice in the valve core assembly 23 and the inflow direction of the refrigerant into the heat exchanger 10 through the outlet flow passage 2131 is approximately 90 degrees, the refrigerant jetted from the orifice cannot directly jet into the heat exchanger, the problem that the refrigerant is unevenly distributed in the first flow passages among the flow plates due to the fact that the jetted refrigerant directly jets into the heat exchanger can be effectively prevented, the refrigerant can be uniformly distributed in the first flow passages, and the heat exchange performance of the heat exchanger can be effectively improved.

And the refrigerant directly flows into the heat exchanger through the fourth through hole 32 after flowing out of the outlet flow passage 2131, the intermediate distance is short, the phenomenon that the refrigerant is long in the intermediate distance and generates gas-liquid separation in the flowing process can be well inhibited, the heat exchange performance of the heat exchanger is improved, and the superheat degree can be well controlled. Furthermore, the valve body 21 is directly fixed with the mounting plate 3, so that the vibration resistance of the heat exchange device can be improved.

A second step portion 214 and a first step portion 213 that protrude from the side wall by a predetermined distance are further provided on the side wall of the valve body 21 on the side where the outlet of the outlet flow passage 2131 is located, and the first step portion 213 protrudes from the upper plane of the second step portion 214. Wherein the second step portion 214 is a cylindrical structure or a polygonal column structure, including the annular end face 2141, and the height thereof is X, and the value range of X is: x is more than or equal to 0.1mm and less than or equal to 1mm, and a certain distance is kept between the outer end of the second step part 214 and the outer end of one side wall of the valve body 21 where the second step part 214 is located.

As shown in fig. 7, an annular recess 217 may be formed in the side wall of the valve body to form the second stepped portion 214.

The first step portion 213 protrudes from the end surface 2141 by a certain distance, and in the heat exchange device, the first step portion 213 may extend into the fourth through hole 32, and the first step portion 213 performs positioning and limiting functions. The first step portion 213 may be a cylindrical structure or a polygonal column structure, and when the first step portion 213 is a polygonal column structure, the first step portion 213 can also perform a limiting function during installation, so as to prevent the valve body 21 from rotating along the first step portion 213 to cause the valve core assembly 23 and the coil assembly 22 to be unable to be installed, and also prevent the consistency and the aesthetic property of the product appearance from being affected, which is more beneficial to the design of the clamp.

In the present embodiment, the valve body 21 is fixed to the mounting plate 3 by welding. As shown in fig. 5, terminal surface 2141 and mounting panel 3's terminal surface direct contact, terminal surface 2141 is the face of weld, because the height of second step portion 214 is X, thereby make and be formed with the gap between valve body lateral wall and the mounting panel 3 at second step portion 214 place, because X's value scope is 0.1mm and is less than or equal to X and is less than or equal to 1mm, when welding, some welding liquid can flow into in the gap, not only be favorable to the welding, can prevent that the soldering lug between mounting panel 3 and valve body 21 from melting and spilling over the valve body and influencing beautifully when welding, can also reduce welding area, improve the cooperation plane degree, prevent the problem that the antidetonation intensity that the cavity that the middle welding leads to of taking place not completely reduces.

Of course, the valve body may be fixed to the mounting plate 3 by screws, and in order to improve sealing performance when the valve body is fixed by screws, a seal ring (not shown) may be provided between the outer wall of the first stepped portion 213 and the inner wall of the fourth through hole 32, and a groove (not shown) may be formed in the outer wall of the first stepped portion 213 in order to facilitate the installation of the seal ring.

During assembly, the flow plate 8, the end plate 6, the bottom plate 7, the mounting plate, the first connecting pipe 1, the second connecting pipe 4, the third connecting pipe 5 and the valve body 21 are welded together in a brazing mode. Before welding, firstly, assembling the flow plate 8, the end plate 6, the bottom plate 7, the mounting plate, the first connecting pipe 1, the second connecting pipe 4, the third connecting pipe 5 and the valve body 21, and putting the assembly into a special tool clamp for compressing and fixing; and then, putting the pressed flow plate 8, the end plate 6, the bottom plate 7, the mounting plate, the first connecting pipe 1, the second connecting pipe 4, the third connecting pipe 5 and the valve body 21 into a furnace for welding. The welding mode can adopt a vacuum furnace for vacuum brazing or a tunnel furnace for nitrogen protection welding. After welding, the spool assembly 23 and the coil assembly 22 are sequentially mounted to the valve body 21.

As shown in fig. 8, when the distance between the third through hole 343 and the fourth through hole 32 on the mounting plate 3 is short and the valve core assembly 23 or the coil assembly 22 cannot be mounted, the valve body 21 may be rotated by a certain angle relative to the first step portion 213, and the included angle α between the center line of the valve core assembly 23 and the mounting plate 3 may have a value range of: alpha is more than or equal to 0 degree and less than or equal to 90 degrees, and the value of the included angle alpha can be adjusted according to the specific installation requirement.

Fig. 9 shows another embodiment of the present invention, in which the mounting plate 3 is provided with a groove for clamping and fixing the valve body 21, and the valve body 21 is fixed on the end plate 6 by welding and sealing. In this embodiment, the mating portion includes the groove. Because the valve body 21 is clamped and fixed on the mounting plate 3, the vibration resistance of the heat exchange device can be effectively improved.

Fig. 10 and 11 show a further embodiment of the present invention, in this embodiment, a side wall of a side of the valve core assembly receiving cavity 212 of the valve body, where the open end is located, is a slope surface 215, a center line of the valve core assembly receiving cavity 212 is perpendicular to the slope surface 215, an included angle β between the outlet flow passage 2131 and the center line of the valve core assembly receiving cavity 212 is greater than 90 ° and less than or equal to 180 °, and further, an included angle β between the outlet flow passage 2131 and the center line of the valve core assembly receiving cavity 212 is greater than 90 ° and less than or equal to 165 °, so that the thickness W of the heat exchanger device can be effectively reduced, the installation of the heat exchanger device in a system is facilitated, and the installation space of the heat exchanger device is reduced.

Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A heat exchange device comprises a heat exchanger and a valve body, wherein the valve body comprises an inlet flow channel, an outlet flow channel and a valve core assembly accommodating cavity; the heat exchanger comprises a first flow channel and a second flow channel, and the outlet flow channel is communicated with the first flow channel;

the valve body has first step portion and second step portion, first step portion is located the lateral wall of the export place one side of the exit runner of valve body, second step portion is located the lateral wall of the export place one side of the exit runner of valve body, first step portion protrusion in second step portion, second step portion's height is X, and X's value range does: x is more than or equal to 0.1mm and less than or equal to 1mm, and a distance is kept between the outer end part of the second step part and the outer end part of one side wall of the valve body where the second step part is located.

2. The heat exchange device of claim 1, wherein the second step portion comprises an end surface, the first step portion protrudes from the end surface, and the second step portion has a cylindrical structure or a polygonal prism structure;

or a pit is further arranged on the side wall of the valve body on the side where the outlet of the outlet flow passage is located, the second step part is formed around the pit and comprises an end face, and the first step part protrudes out of the end face.

3. The heat exchange device according to claim 1, wherein the heat exchange device includes a mounting plate, the mounting plate includes a first through hole, a second through hole, a third through hole, and a fourth through hole, the valve body is welded to the mounting plate, the outlet flow channel communicates with the first flow channel through the fourth through hole, the first step portion protrudes into the fourth through hole, an end surface of the second step portion is circular, and the circular end surface is a welding surface.

4. The heat exchange device according to claim 2, wherein the heat exchange device includes a mounting plate, the mounting plate includes a first through hole, a second through hole, a third through hole, and a fourth through hole, the valve body is welded to the mounting plate, the outlet flow channel communicates with the first flow channel through the fourth through hole, the first step portion protrudes into the fourth through hole, an end surface of the second step portion is circular, and the circular end surface is a welding surface.

5. The heat exchange device according to claim 1, wherein the heat exchange device includes a mounting plate, a center line of the valve element assembly accommodating cavity is parallel to a surface of the mounting plate, which is matched with the valve body, or a center line of the valve element assembly accommodating cavity is parallel to a surface of the heat exchanger, which is matched with the valve body, or an included angle β is formed between the outlet flow channel and the center line of the valve element assembly accommodating cavity, and a value range of the included angle β is as follows: beta is more than 90 degrees and less than or equal to 180 degrees.

6. The heat exchange device of any one of claims 3 to 5, wherein an included angle α formed between a center line of the valve core assembly and the mounting plate has a value range of: alpha is more than or equal to 0 degree and less than or equal to 90 degrees, and the outlet flow channel is vertical to the central line of the valve core assembly accommodating cavity.

7. The heat exchange device according to any one of claims 1 to 5, wherein the first step portion and/or the second step portion is a cylindrical structure or a polygonal prism-shaped structure;

the side wall of one side of the valve core assembly accommodating cavity of the valve body, where the open end is located, is a slope, the center line of the valve core assembly accommodating cavity is perpendicular to the slope, and an included angle beta between the outlet flow channel and the center line of the valve core assembly accommodating cavity is greater than 90 degrees and less than or equal to 165 degrees.

8. The heat exchange device of claim 6, wherein the first and/or second stepped portions are cylindrical structures or polygonal prism structures;

9. The heat exchange device of claim 3, wherein the first and second through holes communicate with a second flow passage of the heat exchanger, the third through hole communicates with a first flow passage of the heat exchanger, the first flow passage comprises a refrigerant inlet and a refrigerant outlet, the second flow passage comprises a coolant inlet and a coolant outlet, the first through hole and the coolant inlet are both circular and are arranged coaxially or eccentrically, and the inner diameter of the first through hole is larger than that of the coolant inlet to form a step; the second through hole and the cooling liquid outlet are both round and are coaxially or eccentrically arranged, and the inner diameter of the second through hole is larger than that of the cooling liquid outlet so as to form a step; the third through hole and the refrigerant outlet are both circular and are coaxially or eccentrically arranged, and the inner diameter of the third through hole is larger than that of the refrigerant outlet so as to form a step.

10. The heat exchange device according to claim 9, wherein the fourth through hole and the refrigerant inlet are both circular and coaxially arranged, an inner diameter of the fourth through hole is smaller than an inner diameter of the refrigerant inlet, and the inner diameter of the fourth through hole is smaller than an inner diameter of the third through hole;

at least two directional salient points are arranged on the edge of the first through hole.

11. The heat exchange device of claim 1, including a mounting plate including a slot, the valve body being disposed in the slot, the valve body being welded to the heat exchanger, the outlet passage of the valve body being in direct communication with the first flow passage.

12. The heat exchange device of claim 1, wherein the heat exchanger is used as an evaporator, and the heat exchange device comprises a valve core assembly and a coil assembly, and the valve core assembly or a part of the valve core assembly is located in the valve core assembly accommodating cavity.