CN108087531B

CN108087531B - Heat exchange assembly

Info

Publication number: CN108087531B
Application number: CN201611040101.7A
Authority: CN
Inventors: 裘浩明; 廖志勇; 罗勇进
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2016-11-21
Filing date: 2016-11-21
Publication date: 2021-04-16
Anticipated expiration: 2036-11-21
Also published as: CN108087531A

Abstract

The invention discloses a heat exchange assembly, which comprises a heat exchange core body, a valve assembly, an adapter and a mounting plate fixed with the heat exchange core body, wherein the valve assembly is arranged in a second channel of the heat exchange core body or is partially positioned in the second channel; when the first valve port is closed, the third port is communicated with the fifth port sequentially through the first channel, the second channel, the first notch and the second notch. The heat exchange assembly is integrated with the valve assembly, so that the heat exchange assembly has a heat exchange function and a fluid flow adjusting and switching function at the same time, the structure is compact, the size is small, and the miniaturization and the integration degree of an oil cooling system of a gearbox can be improved.

Description

Heat exchange assembly

Technical Field

The invention relates to the field of fluid control, in particular to a heat exchange assembly.

Background

The normal operation of the automobile is ensured by timely lubricating all parts of the automobile with lubricating oil in the driving process. If the lubricating performance of the lubricating oil is not good enough, the service life of the automobile is influenced. The lubricating performance of the lubricating oil is greatly related to the temperature of the lubricating oil, and when the temperature of the lubricating oil is too high or too low, the lubricating performance of the lubricating oil is affected.

The temperature of the lubricating oil is generally not too high during normal running, and when the vehicle is overloaded or set in a four-wheel drive mode during snow running or off-road running and the vehicle runs under the transient slipping condition of the hydraulic torque converter, the temperature of the oil in the gearbox can be too high, so that the lubricating performance is lost.

The existing gearbox oil mainly realizes the temperature regulation function through a cooling flow path consisting of a temperature regulation valve and an external cooling device.

However, the existing temperature regulating valve needs to be connected with an external cooling device through a pipeline, so that the arrangement of parts is complex, the occupied space is large, and the problem of large leakage risk is also brought.

Disclosure of Invention

In order to improve the miniaturization and integration degree of a gearbox oil cooling system, the invention provides a heat exchange assembly, which comprises a heat exchange core body, a mounting plate fixed with the heat exchange core body, a first interface, a second interface, a third interface and a fourth interface, wherein the heat exchange core body comprises an end plate, and a first flow passage and a second flow passage which are isolated from each other, the first flow passage is communicated with the first interface and the second interface, the second flow passage is communicated with the third interface and the fourth interface, the second flow passage comprises a first channel and a second channel, and the heat exchange assembly is characterized in that the second channel penetrates through the heat exchange core body, one end of the second channel is communicated with the fourth interface,

the heat exchange assembly further comprises a valve assembly and an adapter, the adapter is provided with a cavity and a fifth interface communicated with the cavity of the adapter, the valve assembly is arranged in the second channel, the valve assembly comprises a main valve body and a thermal element arranged in the main valve body, a first valve port is further arranged in the main valve body, the first valve port is opened or closed by the thermal element far away from or close to the first valve port, a first opening and a second opening are respectively arranged at two ends of the main valve body, the main valve body comprises an accommodating cavity, the accommodating cavity is located between the first opening and the second opening, a first notch is formed in the side wall of the main valve body corresponding to the accommodating cavity, and the first notch is communicated with the second channel;

an upper valve sleeve is arranged in the first opening and comprises a main body part and a supporting part, one end of the thermal actuator is supported by the upper valve sleeve, a cavity is formed in the main body part, the main body part is provided with a second notch communicated with the cavity in the main body part, and the second notch is communicated with the fifth interface;

when the first valve port is opened, the third port is communicated with the fourth port sequentially through the first channel, the second channel, the first notch and the first valve port;

when the first valve port is closed, the third port is communicated with the fifth port sequentially through the first channel, the second channel, the first notch and the second notch.

One end of the main valve body is fixed with the inner wall corresponding to the cavity in the adapter seat in a sealing mode, the other end of the main valve body is fixed with the inner wall of the fourth interface in a sealing mode, the main valve body further comprises a flow guide portion located in the second channel, the first notch is located in the flow guide portion, and the outer diameter of the flow guide portion is smaller than the inner diameter of the second channel.

The diameter of the first opening is larger than the inner diameter of the accommodating cavity, a step part is formed between the first opening and the accommodating cavity, the supporting part is abutted against the step part between the first opening and the accommodating cavity through the arrangement of a first buckle, the supporting part is in clearance fit with the inner wall of the first opening, and a flow channel is formed between the main body part and the inner wall of the first opening by keeping a distance.

The main valve body is also internally provided with a first spring and a second spring which are in a compressed state, two ends of the thermal element are respectively abutted with one end of the first spring and one end of the second spring, the initial elastic deformation force of the second spring is greater than the elastic deformation force of the first spring when the first valve port is closed, a supporting cap and a second buckle are further arranged in the cavity of the main body part, the supporting cap is fixed through the second buckle, one end of the second spring is abutted with the inner bottom surface of the bottom of the main body part, the other end of the second spring is abutted with the supporting cap, the second spring is in a compressed state, and the second notch is positioned between the supporting part and the second buckle.

The support cap comprises an extending part, the extending part is in clearance fit or sliding fit with the inner wall of the cavity of the main body part, the extending part is provided with at least one notch, and a channel for fluid to pass through is formed between the notch and the inner wall of the cavity of the main body part;

the main body part is provided with a third gap relative to the upper end part of the support cap, and the third gap is communicated with a channel which is formed between the notch and the inner wall of the cavity of the main body part and is used for fluid to pass through.

A third opening is formed in the bottom of the main body part, and the third opening is communicated with a channel for fluid to pass through, which is formed between the notch and the inner wall of the cavity of the main body part;

the third notch is positioned above the extending part when the support cap compresses the second spring to move for the maximum stroke.

The support part is also provided with a second valve port, the second valve port is opened or closed by the thermal element being far away from or close to the second valve port, when the first valve port is closed, the second notch is communicated with the first notch through the second valve port, the third notch is communicated with the first notch sequentially through a channel formed between the notch and the inner wall of the cavity of the main body part and the second valve port, and the third port is communicated with the first notch through the channel formed between the notch and the inner wall of the cavity of the main body part and the second valve port;

when the second valve port is closed and the first valve port is opened, the third port is communicated with the fourth port sequentially through the first channel, the second channel, the first notch and the first valve port, and the third port is not communicated with the fifth port;

when the first valve port is closed, the second valve port is opened, the third port is communicated with the fifth port sequentially through the first channel, the second channel, the first notch and the second valve port, and the third port is not communicated with the fourth port.

The valve module still includes lower valve barrel, a part of lower valve barrel is located hold the chamber, another part of lower valve barrel is located the second opening and with the second open-ended inner wall is sealed fixed, lower valve barrel includes valve seat portion, spring support seat, cooperation portion and runs through the perforating hole of lower valve barrel, first valve port is located valve seat portion, first valve port is a part of perforating hole, cooperation portion with it is sealed fixed to run through between the second open-ended inner wall, works as when first valve port is closed, first breach not with the second opening intercommunication.

A fourth gap is arranged between the spring supporting part and the valve seat part, the fourth gap is communicated with a through hole part corresponding to the matching part, the fourth gap is communicated with the second opening through the through hole, the outer diameter of the valve seat part is larger than the outer diameters of other parts of the lower valve sleeve, the outer diameter of the valve seat part is smaller than the inner diameter of the accommodating cavity, a channel for fluid flowing is formed between the outer wall of the valve seat part and the accommodating cavity, a pressure relief ring and a third spring are further arranged in the accommodating cavity, the pressure relief ring is provided with a through hole, through the through hole, the pressure relief ring sleeve is arranged on the lower valve sleeve, the inner diameter of the through hole is smaller than the outer diameter of the valve seat part, the pressure relief ring is in sliding fit with the inner wall corresponding to the accommodating cavity, one end of the third spring is in butt joint with the pressure relief ring, and the other end of the third spring is in butt joint with, the pressure relief ring is abutted against the valve seat portion by the third spring;

through the pressure release ring butt or keep away from valve seat portion, the outer wall of valve seat portion with hold the passageway that forms between the chamber and supply fluid flow with fourth breach does not communicate or communicate.

The inner diameter of the accommodating cavity is larger than that of the second opening, a step part is formed between the accommodating cavity and the second opening, one end of the third spring is abutted against the step part formed between the accommodating cavity and the second opening, and relative to the first gap, the first valve port is relatively close to the second opening;

and the lower valve sleeve is also provided with a concave part sunken in the spring supporting part.

The invention also provides a gearbox oil temperature adjusting system which comprises a gearbox, a heat exchange assembly and an oil cooler, wherein the heat exchange assembly is the heat exchange assembly, the third interface and the fourth interface are directly or through pipelines communicated with an inlet and an outlet of the gearbox, an outlet of one flow passage of the oil cooler is communicated with an inlet of the gearbox through a pipeline, and an inlet of a flow passage of the oil cooler is communicated with the fifth interface;

when the temperature of the cooling oil from the outlet of the gearbox after entering the heat exchange core body is in a normal state, the cooling oil enters the valve assembly through the first notch, and as the first valve port of the thermal element is in an open state under the action of the restoring force of the first spring, the cooling oil flows back to the gearbox through the fourth port and the inlet of the gearbox after passing through the first valve port;

when the temperature of the cooling oil from the outlet of the gearbox after entering the heat exchange core body for heat exchange is higher, the cooling oil flows into the valve assembly through the first notch, the thermal element is heated and expands to close the first valve port at the moment, the first valve port is in a closed state, the cooling oil flows to the oil cooler through the fifth interface, and the cooling oil flowing out of the oil cooler flows back to the gearbox through the inlet of the gearbox.

The heat exchange assembly is integrated with the valve assembly, so that the heat exchange assembly has a heat exchange function and a fluid flow adjusting and switching function at the same time, the structure is compact, the size is small, and the miniaturization and the integration degree of an oil cooling system of a gearbox can be improved.

Drawings

Fig. 1 is a perspective view of a valve assembly according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of the valve assembly of fig. 1 with the first port closed and the second port open.

FIG. 3 is a cross-sectional schematic view of the valve assembly of FIG. 1 with the second port closed and the first port open.

FIG. 4 is a schematic cross-sectional view of the main valve body of the valve assembly of FIG. 1.

Fig. 5 is a perspective view of the upper housing of the valve assembly of fig. 1.

Fig. 6 is a perspective view of a support cap of the valve assembly of fig. 1.

Fig. 7 is a perspective view of the lower valve sleeve of the valve assembly of fig. 1.

Fig. 8 is a cross-sectional structural view of the lower valve sleeve of fig. 7.

FIG. 9 is a perspective view of one embodiment of the heat exchange assembly of the present invention with the valve assembly installed.

Fig. 10 is a schematic cross-sectional view of fig. 9.

Fig. 11 is an enlarged partial schematic view of fig. 10 in the area of the valve assembly.

FIG. 12 is a schematic diagram of the operation of the transmission oil temperature regulation system having the heat exchange assembly of FIG. 9 when the cooling oil is cold.

FIG. 13 is a schematic diagram of the operation of the transmission oil temperature regulation system having the heat exchange assembly of FIG. 9 at high cooling oil temperatures.

FIG. 14 is a perspective view of yet another embodiment of a heat exchange assembly with a valve assembly installed in accordance with the present invention.

FIG. 15 is a schematic diagram of the operation of the transmission oil temperature regulation system having the heat exchange assembly of FIG. 14 when the cooling oil is cold.

FIG. 16 is a schematic illustration of the operation of the transmission oil temperature regulation system having the heat exchange assembly of FIG. 14 at high cooling oil temperatures.

The arrows in the figure indicate the direction of fluid flow.

Detailed Description

The initial deformation force described in the specification refers to the pressure generated when the spring in a compressed state is subjected to external force to deform when the product is not used.

The technical solutions are specifically described below with reference to the drawings and the detailed description, and the terms of orientation such as top, bottom, left side, right side, etc. described in this specification are all set forth according to the corresponding orientation relationship in the drawings.

As shown in fig. 1 and 2, the valve assembly comprises a hollow main valve body 1 and a thermal valve 6 mounted within the main valve body 1. The main valve body 1 has openings at both ends, and an upper valve housing 2 and a lower valve housing 3 are fixedly mounted at both ends inside the main valve body 1, respectively. A first spring 4 and a second spring 5 are further arranged in the main valve body 1, one end of the first spring 4 is abutted with the lower valve sleeve 3, the other end of the first spring 4 is abutted with one end of the thermal actuator 6, one end of the second spring 5 is abutted with the other end of the thermal actuator 6, and the other end of the second spring 5 is abutted with the upper valve sleeve 2. The first spring 4 and the second spring 5 are in compression so that the thermal element 6 is fixed within the main valve body 1.

As shown in fig. 4, the main valve body 1 is provided at both ends thereof with a first opening 11 and a second opening 12, respectively, wherein the inner diameter of the first opening 11 is larger than that of the second opening 12, and the inner wall of the second opening 12 is provided with an internal thread. Main valve body 1 is internal still to be provided with and to hold chamber 15, holds chamber 15 and is located between first opening 11 and second opening 12, holds the internal diameter of chamber 15 and is less than the internal diameter of first opening 11, is formed with the step portion between first opening 11 and holding chamber 15, and the internal diameter of second opening 12 is less than the internal diameter that holds chamber 15, is formed with the step portion between holding chamber 15 and second opening 12.

The side wall of the main valve body 1 corresponding to the accommodating cavity 15 is provided with a first notch 13, the first notch 13 is located above the lower valve sleeve 3, and in this embodiment, a step portion is formed between the first notch 13 and the accommodating cavity 15, the step portion being close to the first opening 11. In order to increase the opening area of the first notch 13 and to stabilize the main valve body 1, the first notch 13 includes a first sub-notch 131 and a second sub-notch 132, and an annular connecting portion 14 is disposed between the first sub-notch 131 and the second sub-notch 132, wherein the annular connecting portion 14 may be a portion of the side wall of the main valve body 1. If the annular connecting part 14 is not arranged, when the first notch 13 is large, the side wall of the main valve body 13 of the part corresponding to the first notch 13 is the connecting column 133, so that the stability of the main valve body 1 is low, and the stability of the main valve body 1 can be better improved by arranging the annular connecting part 14.

As shown in fig. 5, the upper valve housing 2 has a cap-like structure, and the upper valve housing 2 includes a supporting portion 21 having a larger outer diameter and a main body portion 20 having a smaller outer diameter relative to the supporting portion 21, and a certain distance is maintained between an outer wall of the main body portion and an inner wall of the receiving cavity to form a fluid passage. A cavity is arranged in the main body part 20, the second spring 5 is accommodated in the cavity of the main body part 20, a support cap 93 is further arranged in the cavity of the main body part 20, and the support cap 93 is fixed through a second buckle 92. One end of the second spring 5 abuts against the inner bottom surface of the bottom portion 23 of the body portion 20, and the other end of the second spring 5 abuts against the support cap 93. The support portion 21 is further provided with a second valve port 211, the second valve port 211 being opposite to and communicating with the cavity of the main body portion 20, the second valve port 211 may be a part of the cavity. The main body 20 is provided with a second notch 22 at a portion near the support portion 21, wherein the second notch 22 is located below the support cap 93, and the second notch 22 communicates with the second valve port 211. So that fluid can flow out of the upper valve housing 2 through the second gap 22 after passing through the second valve port 211.

In some applications where the requirement for the variation of the fluid flow resistance is high, the flow area of the second gap 22 may still not be large enough due to the second gap 22 being located under the support cap 93, which may result in a large reduction of the flow resistance. In this embodiment, in order to further reduce the reduction of the flow resistance and increase the flow area of the fluid flowing out of the upper valve sleeve, as shown in fig. 6, at least one notch 932 may be further formed on the outer extension 931 of the support cap 93. Such that a fluid passage is formed between the notches 932 and the inner wall of the upper housing 2.

In addition, a third notch 232 may be formed at an upper end portion of the support cap 93 of the main body portion 20 of the upper valve housing 2, and a portion of the fluid may flow out of the upper valve housing 2 through the third notch 232 after passing through the second valve port 211 and then passing through a fluid passage formed between the notch 932 and the inner wall of the upper valve housing 2. In order to improve the stability of the support cap 93 during the movement and prevent the stroke of the support cap 93 from crossing the third notch 232, the third notch 232 may be located above the outward extension 931 when the support cap 93 compresses the maximum stroke of the second spring 5 movement.

In this embodiment, a third opening 231 is further opened in the bottom 23 of the main body 20, so that the resistance to the fluid flowing out of the upper valve housing 2 is further reduced.

Through the arrangement, the fluid can flow out of the upper valve sleeve 2 more smoothly, and the flow resistance of the fluid flowing out of the upper valve sleeve 2 is reduced.

As shown in fig. 2, the supporting portion 21 of the upper valve sleeve 2 contacts with a step portion formed between the first opening 11 and the accommodating chamber 15, the upper valve sleeve 2 can be fixed by the first snap 91, and the supporting portion is in clearance fit with the inner wall of the first opening. It should be noted here that the upper valve sleeve 2 can also be fixed by other means (for example riveting, screwing, etc.). In order to improve the sealing performance, a sealing ring may be further provided between the support portion 21 and the inner wall of the accommodation chamber 15. Thus, the first notch 13 can be communicated with the second notch, the third notch and the third opening through the second valve port 211 respectively.

As shown in fig. 2, a portion of the lower valve housing 3 is located in the receiving chamber 15, and another portion of the lower valve housing 3 is located in the second opening 12 and is threadedly coupled with the inner wall of the second opening 12.

As shown in fig. 7, the lower valve sleeve 3 includes a valve seat portion 34, a spring support seat 33, an engagement portion 35, and a through hole 32 penetrating the lower valve sleeve 3, the valve seat portion 34 is provided with a first valve port 31 penetrating the valve seat portion, and the first valve port 31 may be a part of the through hole 32 and is relatively far from the first opening with respect to the first notch. The fitting portion 35 is provided with an external thread to be fitted with an internal thread of the second opening 12 of the main valve body 1, thereby fixedly mounting the lower valve housing 3.

In the present embodiment, in order to facilitate the installation of the lower valve sleeve 3, a concave portion 37 recessed in the spring support portion 33 is further provided, and the concave portion 37 may have a polygonal structure or a plurality of concave structures, which is not limited herein.

As shown in fig. 8, in the present embodiment, a fourth notch 36 is further provided between the spring support portion 33 and the valve seat portion 34. The fourth notch 36 is communicated with the corresponding portion of the through hole 32 of the fitting portion 35, i.e., the fluid passing through the fourth notch 36 can flow out of the lower valve sleeve 3 through the lower port of the through hole 32.

As shown in fig. 2, the fitting portion 35 of the lower valve housing 3 is fixed to the second opening 12 of the main valve body 1 by screw coupling. One end of the first spring 4 abuts against the thermal actuator 6, and the other end abuts against the spring support seat 33.

The outer diameter of valve seat portion 34 is larger than the outer diameter of the other portions of lower valve housing 3, and the outer diameter of valve seat portion 34 is smaller than the inner diameter of accommodation chamber 15, and a passage for fluid flow is formed between the outer wall of valve seat portion 34 and the corresponding inner wall of accommodation chamber 15. Still be provided with pressure relief ring 7 and third spring 8 in holding chamber 15, the pressure relief ring is provided with the through-hole, through the through-hole, pressure relief ring cover is located lower valve barrel, the internal diameter of through-hole is less than the external diameter of valve seat portion for pressure relief ring 7 can with valve seat portion 34 looks butt, pressure relief ring 7 with hold sliding fit between the inner wall that chamber 15 corresponds. One end of the third spring 8 is abutted with the pressure relief ring 7, the other end of the third spring is abutted with a step part formed between the accommodating cavity 15 and the second opening 12, and the third spring 8 is in a compressed state. In a normal state, the pressure relief ring 7 is in contact with the valve seat portion 34 by the third spring 8, a passage for fluid to flow formed between the outer wall of the valve seat portion 34 and the inner wall corresponding to the accommodating chamber 15 is closed by the pressure relief ring 7, and a passage for fluid to flow formed between the outer wall of the valve seat portion 34 and the inner wall corresponding to the accommodating chamber 15 cannot communicate with the fourth notch 36. When the acting force of the fluid acting on the upper end face of the pressure relief ring 7 is greater than the initial elastic deformation force of the third spring 8, the pressure relief ring 7 moves downwards to compress the third spring 8, and when the pressure relief ring 7 moves downwards to intersect with the fourth notch 36 or is located below the fourth notch 36, a channel for the fluid to flow, which is formed between the outer wall of the valve seat portion 34 and the inner wall corresponding to the accommodating cavity 15, is communicated with the second opening 12 through the fourth notch 36.

As shown in fig. 2 and 3, the thermal element 6 includes a first valve spool 62 and a second valve spool 61, the first valve spool 62 corresponds to the first port 31, the first port 31 can be opened and closed by the first valve spool 62, the second port 211 can be opened and closed by the second valve spool 61, and the second port 61 can be opened and closed by the second valve spool 61.

And the initial elastic deformation force of the second spring 5 is larger than that of the first spring when the first valve port 31 is closed, so that when the first valve port 31 is closed, if the temperature of the fluid flowing from the first notch 13 is higher, the thermal sensitive substance in the thermal actuator 6 continues to expand, and at this time, the ejector rod of the thermal actuator 6 starts to move upwards to compress the second spring 5, thereby preventing the thermal actuator 6 from being damaged due to the excessive expansion of the thermal sensitive substance.

The valve assembly of this embodiment includes at least two states: 1. the first valve port is opened, the second valve port is closed, 2, the first valve port is closed, and the second valve port is opened. When the temperature of the fluid flowing in from the first notch 13 is low, the first valve core 62 of the thermal actuator 6 is far away from the first valve port 31 under the restoring force of the first spring 4, at this time, the first valve port 31 is opened, the second valve port 211 is closed, and the fluid can sequentially flow out from the first valve port 31, the through hole 32 and the second opening 12 after flowing in from the first notch 13; when the temperature of the fluid flowing in from the first notch 13 is high, the thermal actuator 6 is heated to expand, the first valve core 62 moves downwards to compress the first spring 4 until the first valve port 31 is closed, then if the thermal actuator 6 continues to expand, the valve rod moves upwards to compress the second spring 5, at this time, the first valve port is closed, the second valve port is opened, after the fluid flows in from the first notch 13, a part of the fluid can sequentially flow out through the second valve port 211, the second notch 22 and the first opening 11, and a part of the fluid can sequentially flow out through the second valve port 211, the third notch 232 and the third opening 231.

It should be noted here that the second spring may not be provided, and in this case, the end of the valve stem of the thermal element extending outside the thermal element abuts against or is fixed to the upper valve sleeve. In the embodiment, the second spring can play a role of buffering, and the thermal element is prevented from being excessively expanded and damaged.

In this embodiment, a pressure relief state is further included, when the first valve port 31 is closed, if the fluid flows out of other external devices or pipelines behind the valve assembly and is blocked, the fluid cannot flow out of the valve assembly, so that the pressure of the fluid is greater than the initial elastic deformation force of the third spring, the pressure relief ring 7 moves downward to compress the third spring 8, and when the pressure relief ring 7 moves downward to intersect with the fourth notch 36 or is located below the fourth notch 36, the fluid sequentially passes through a channel for the fluid to flow, the fourth notch 36, the through hole 32 and the second opening 12 formed between the outer wall of the valve seat portion 34 and the inner wall corresponding to the accommodating cavity 15.

It should be noted here that when the pressure relief function is not required, the lower valve housing 3 may be integrated with the main valve body 1, that is, the valve seat portion 34 and the spring support seat 33 in the lower valve housing 3 are part of the main valve body 1, for example, the end of the second opening 12 corresponding to the step portion between the second opening 12 and the accommodating chamber 15 may be used as the first valve port, and a spring support seat 33 may be further provided in the second opening 12.

Fig. 9 to 11 show a heat exchange assembly with the above valve assembly mounted thereon, and as shown, the heat exchange assembly includes a heat exchange core 10, a mounting plate 101 fixed to the heat exchange core, an adapter, a first interface 1041, a second interface 1042, a third interface 1011 and a fourth interface 1012. The heat exchange core 10 includes an end plate 102, and a first flow passage and a second flow passage isolated from each other, and a fluid flowing in the first flow passage and a fluid flowing in the second flow passage can exchange heat. The first flow channel is connected to the first interface 1041 and the second interface 1042, and the second flow channel is connected to the third interface 1011 and the fourth interface 1012.

Wherein the first interface 1041 and the second interface 1042 are communicated with the external system through a connecting pipe. Third interface 1011 and fourth interface 1012 form in mounting panel 101, and third interface 1011 and fourth interface 1012 run through mounting panel 101, can make the mounting panel direct mount in gearbox like this, simple to operate, and the outer risk of leaking is less. In order to further improve the sealing performance and prevent the risk of leakage, a seal ring 1013 and a seal ring 1014 are provided on the outer circumferential sides of the third port 1011 and the fourth port 1012 of the mounting plate 101, respectively.

The second flow channel comprises a first channel 1051 and a second channel 1052, one end of the first channel 1051 is communicated with the third interface 1011, the other end of the first channel 1051 is blocked by the end plate 102, one end of the second channel 1052 is communicated with the fourth interface 1012, and the other end of the second channel 1052 is communicated with the adapter.

As shown in fig. 10 and 11, the adapter includes a first adapter 1031 and a second adapter 1032, the first adapter 1031 includes a receiving cavity 1034 and a fifth port 1033 communicating with the receiving cavity 1034. The second adaptor 1032 includes a base body 1036, a cavity penetrating the base body 1036 is formed in the base body 1036, and a step 1035 is formed on an inner wall of the base body 1036 corresponding to the cavity penetrating the base body 1036.

Second adapter 1032 is secured to endplate 102, such as by welding, threading, or the like. And, the cavity through the seat body 1036 corresponds to the second channel 1052. The first adapter 1031 and the second adapter 1032 are fixed by a screw connection or the like, and a cavity penetrating the housing 1036 corresponds to the receiving cavity 1034, and the fifth port 1033 may communicate with at least a portion of the cavity penetrating the housing 1036 through the receiving cavity 1034. The first adapter seat and the second adapter seat are fixedly connected through screws, and in order to improve sealing performance, a sealing ring can be arranged between sealing surfaces of the first adapter seat 1031 and the second adapter seat 1032.

A valve assembly is disposed in the second passage 1052, with at least a portion of the valve assembly being located in the second passage 1052, and in this embodiment, at least a portion being located within the adapter. The valve assembly is secured by providing a snap ring 1037 at the second adapter 1032 to limit axial displacement of the valve assembly.

As shown in fig. 11, the main valve body 1 includes a first fitting portion 161, a second fitting portion 162, a third fitting portion 163, a flow guide portion 164, and a fourth fitting portion 165, which are gradually reduced in outer diameter. The first mating portion 161 is in clearance fit with an inner wall of the base body 1036 corresponding to the cavity penetrating the base body 1036, and a step formed between the first mating portion 161 and the second mating portion 162 is abutted to a step 1035 formed on the inner wall of the base body 1036 corresponding to the cavity penetrating the base body 1036. The second matching portion 162 is also in clearance fit with the inner wall of the base body 1036 corresponding to the cavity penetrating the base body 1036, and a sealing ring may be further disposed between the second matching portion 162 and the inner wall of the base body 1036 corresponding to the cavity penetrating the base body 1036, so as to improve the sealing performance and reduce the inner leakage.

In order to improve the heat exchange performance of the heat exchanger and prevent the fluid from being blocked by the valve assembly in the process of flowing from the first channel 1051 to the second channel 1052 and thus the fluid cannot be uniformly distributed, the end surface of the second matching part 162 far away from the first adapter 1031 does not exceed the end plate 102, and the outer diameter of the third matching part 163 is smaller than the inner diameter of the second channel 1052, so that when the fluid flows into the second channel 1052 from the plate-to-plate channels, all or most of the plate-to-plate channels can be unblocked by the valve assembly, all or most of the plate-to-plate channels are communicated with the second channel 1052, and the fluid can smoothly flow into the second channel 1052 from the plate-to-plate channels, thereby improving the uniform distribution of the fluid entering the first channel 1051 in the plate-to-plate channels and thus improving the heat exchange performance.

In order to further reduce the flow resistance of the fluid flowing from the inter-plate channel into the second channel 1052, the end of the third mating portion 163 remote from the 1031 of the first interface seat is located below the second valve port 211 and is formed with a shoulder for supporting the support portion 21 of the upper valve sleeve 2. And the flow guide portion 164 is located between the third fitting portion 163 and the fourth fitting portion 165, and the flow guide portion 164 is located in the second channel 1052, an outer diameter of the flow guide portion 164 is smaller than an outer diameter of the third fitting portion 163, and a difference between the outer diameter of the flow guide portion 164 and an inner diameter of the second channel 1052 is larger than a difference between the outer diameter of the third fitting portion 163 and the inner diameter of the second channel 1052. And the first notch is located at the flow guide 164 to facilitate fluid flow into the valve assembly.

The fourth mating portion 165 extends into the fourth interface 1012, the fourth mating portion 165 is in clearance fit with the fourth interface 1012, the inner diameter of the fourth interface is smaller than that of the second passage, and a shoulder formed between the flow guide portion 164 and the fourth mating portion 165 abuts against or abuts against the mounting plate. In order to reduce the risk of internal leakage and improve the sealing performance, a sealing ring may be disposed between the fourth mating portion 165 and the fourth interface 1012.

Fig. 12 and 13 show a transmission oil temperature regulation system having the above heat exchange assembly, the transmission oil temperature regulation system includes a transmission, a heat exchange assembly, an oil cooler and an engine water tank (not shown in the figure), wherein the first port and the second port of the heat exchange assembly are communicated with the engine water tank through a pipeline, and the third port and the fourth port are communicated with an inlet and an outlet of the transmission directly or through a pipeline. One of the flow passages of the oil cooler is communicated with the fifth port of the heat exchange assembly and the inlet of the gearbox through pipelines, and the other flow passage of the oil cooler can be communicated with a refrigerating system (not shown in the figure).

When the temperature of the cooling oil from the outlet of the gearbox after entering the heat exchange core body for heat exchange is in a normal state, after the cooling oil enters the valve assembly through the first notch, because the first valve port 31 is in an open state and the second valve port 211 is in a closed state under the restoring force of the first spring, the cooling oil can flow back to the gearbox through the fourth port and the inlet of the gearbox after passing through the first valve port 31, and thus a cycle is completed.

When the temperature of the cooling oil from the outlet of the gearbox after entering the heat exchange core body for heat exchange exceeds the normal temperature, the cooling oil flows into the valve assembly through the first notch, at the moment, the thermal element is heated and expanded, the thermal element moves downwards to close the first valve port 31, at the moment, the first valve port 31 is in a closed state, the second valve port 211 is in an open state, the cooling oil can flow into the oil cooler through the fifth interface after passing through the second valve port 211, and the high-temperature cooling oil flows back to the gearbox through the inlet of the gearbox after being subjected to heat exchange and cooled to the normal temperature state in the oil cooler, so that one-time circulation is completed.

Further, when the temperature of the cooling oil is high and the oil cooler is blocked, at this time, although the first valve port 31 is in a closed state, the high-temperature cooling oil can utilize the pressure relief function of the valve assembly, so that the cooling oil can flow back to the transmission case through a channel for fluid flowing, the fourth port and an inlet of the transmission case formed between the outer wall of the valve seat portion 34 and the inner wall corresponding to the accommodating cavity 15, and the transmission case is prevented from being damaged due to oil shortage.

Fig. 14 shows a heat exchange assembly of a further embodiment of the present invention, which differs from the heat exchange assembly of the previous embodiment in that a through channel 106 is further provided in the heat exchange core in communication with the fourth port 1012, the through channel 106 extends through the heat exchange core 105, and the through channel 106 is neither in communication with the first channel nor the second channel of the heat exchange core.

As shown, to facilitate connection of the through passage 106 with an external system, the second adaptor 1032 is further provided with a sixth interface 1034, the sixth interface 1034 is disposed opposite to the through passage 106 and the sixth interface 1034 communicates with the through passage 106.

In order to keep the through channel 106 from communicating with the first and second channels, this is achieved in this embodiment by providing a connection tube 1061 in the heat exchanger core. It is of course also possible to implement the heat exchange core in other ways, for example, by machining holes in the plates that make up the heat exchange core, and after the plates are stacked, the holes are stacked together to form the through channels 106.

In order to facilitate the fitting of the fourth fitting portion and the mounting plate, and simultaneously realize that the through hole is communicated with the fourth interface, the mounting plate 101 includes a first mounting plate 1015 and a second mounting plate 1016, wherein the second mounting plate 1016 is fixed with the heat exchange core body by welding, and the first mounting plate 1015 is fixed with the second mounting plate 1016 by welding. The second mounting plate 1016 is further provided with a connection hole 1017 connected to the through hole 106, the first mounting plate 1015 is provided with a groove 1018, and both ends of the groove 1018 are respectively communicated with the connection hole 1017 and the fourth interface 1012.

It should be noted here that the first mounting plate and the second mounting plate may also be combined into one mounting plate, and in the present embodiment, the mounting plate is divided into two parts, so that the processing process is simple.

Other structures and features of the heat exchange assembly of the present embodiment are the same as or similar to those of the heat exchange assembly of the above embodiment, and are not described in detail here.

Fig. 15 and 16 show a transmission oil temperature regulation system including the heat exchange assembly of the present embodiment, which differs from the transmission oil temperature regulation system shown in fig. 12 and 13 in that the heat exchange assembly is different, and in the present embodiment, the through hole 106 is provided in the heat exchange assembly, so that the outlet of the oil cooler can be directly communicated with the fourth interface 1012 through the through hole 106, so that the inlet of the transmission only needs to be connected with the fourth interface 1012, the integration level is high, and the risk of external leakage can be further reduced.

Other structures and features are the same as or similar to those of the transmission oil temperature regulation system shown in fig. 12 and 13, and are not described in detail herein.

The foregoing is considered as illustrative and not restrictive in any way, and the appended drawings illustrate only typical embodiments of this invention and are therefore not to be considered limiting of its scope, for the invention may admit to other equally effective embodiments. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can now make numerous changes and modifications to the disclosed embodiments, and equivalents thereof, without departing from the scope of the invention as set forth in the claims below. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.

Claims

1. A heat exchange assembly comprises a heat exchange core body and a mounting plate fixed with the heat exchange core body, and further comprises a first interface, a second interface, a third interface and a fourth interface, wherein the heat exchange core body comprises an end plate, the heat exchange core body further comprises a first flow channel and a second flow channel which are isolated from each other, the first flow channel is communicated with the first interface and the second interface, the second flow channel is communicated with the third interface and the fourth interface, the second flow channel comprises a first channel and a second channel, the heat exchange assembly is characterized in that the second channel penetrates through the heat exchange core body, one end of the second channel is communicated with the fourth interface,

the heat exchange assembly further comprises a valve assembly and a transfer seat, the transfer seat is provided with a cavity and a fifth interface, the fifth interface is communicated with the cavity of the transfer seat, the valve assembly is arranged in the second channel or is partially positioned in the second channel, the valve assembly comprises a main valve body and a thermal actuator arranged in the main valve body, a first valve port is further arranged in the main valve body, the first valve port is opened and closed through the action of the thermal actuator, a first opening and a second opening are respectively arranged at two ends of the main valve body, an accommodating cavity is arranged in the main valve body and is positioned between the first opening and the second opening, a first notch is formed in the side wall of the main valve body corresponding to the accommodating cavity, and the first notch is communicated with the second channel;

an upper valve sleeve is arranged in the first opening and comprises a main body part, one end of the thermal element is supported or limited by the upper valve sleeve, a cavity is formed in the main body part, a second notch communicated with the cavity in the main body part is formed in the main body part, and the second notch is communicated with the fifth interface;

2. The heat exchange assembly of claim 1, wherein one end of the main valve body is sealingly secured to an inner wall of the adapter corresponding to the cavity, and the other end of the main valve body is sealingly secured to an inner wall of the fourth port, the main valve body further comprising a flow guide located in the second passage, the first notch being located in the flow guide, the flow guide having an outer diameter smaller than an inner diameter of the second passage.

3. The heat exchange assembly as claimed in claim 2, wherein the upper valve housing further comprises a support portion, the diameter of the first opening is larger than the inner diameter of the receiving cavity, a step portion is formed between the first opening and the receiving cavity, the support portion abuts against the step portion between the first opening and the receiving cavity by providing a first snap, the support portion is in clearance fit with the inner wall of the first opening, and the main body portion is spaced from the inner wall of the first opening to form a flow passage.

4. A heat exchange assembly as claimed in claim 3, wherein a first spring and a second spring are disposed in the main valve body, the first spring and the second spring are under compression, two ends of the thermal element are respectively abutted against one end of the first spring and one end of the second spring, an initial elastic deformation force of the second spring is greater than an elastic deformation force of the first spring when the first valve port is closed, a support cap and a second clip are disposed in the cavity of the main body, the support cap is fixed by the second clip, one end of the second spring is abutted against an inner bottom surface of the bottom of the main body, the other end of the second spring is abutted against the support cap, the second spring is under compression, and the second notch is located between the support portion and the second clip.

5. The heat exchange assembly of claim 4, wherein the support cap comprises an outer extension portion, the outer extension portion is in clearance fit or sliding fit with an inner wall of the cavity of the main body portion, the outer extension portion is provided with at least one notch, and a channel for fluid to pass through is formed between the notch and the inner wall of the cavity of the main body portion;

6. The heat exchange assembly of claim 5, wherein the bottom of the main body defines a third opening, and the third opening is in communication with a passage formed between the slot and an inner wall of the cavity of the main body for passage of a fluid;

7. The heat exchange assembly as claimed in claim 6, wherein the support part is further provided with a second valve port opened or closed by the thermal element being far from or close to the second valve port, the second notch communicates with the first notch through the second valve port when the first valve port is closed, the third notch communicates with the first notch sequentially through a passage for fluid passage formed between the notch and the inner wall of the cavity of the body part and the second valve port, and the third opening communicates with the first notch through a passage for fluid passage formed between the notch and the inner wall of the cavity of the body part and the second valve port;

8. The heat exchange assembly of any one of claims 1 to 7, further comprising a lower valve housing, a portion of the lower valve housing being located in the receiving chamber, another portion of the lower valve housing being located in the second opening and being sealingly secured to an inner wall of the second opening, the lower valve housing including a valve seat portion, a spring support seat, an engagement portion, and a throughbore extending through the lower valve housing, the first valve port being located in the valve seat portion, the first valve port being a portion of the throughbore, the engagement portion being sealingly secured to the inner wall of the second opening, the first notch not being in communication with the second opening when the first valve port is closed.

9. The heat exchange assembly as claimed in claim 8, wherein a fourth gap is provided between the spring support portion and the valve seat portion, the fourth gap is communicated with a through hole portion corresponding to the engagement portion, the fourth gap is communicated with the second opening through the through hole, an outer diameter of the valve seat portion is larger than outer diameters of other portions of the lower valve housing, the outer diameter of the valve seat portion is smaller than an inner diameter of the receiving cavity, a passage for fluid to flow is formed between an outer wall of the valve seat portion and the receiving cavity, a pressure relief ring and a third spring are further provided in the receiving cavity, the pressure relief ring is provided with a through hole, the pressure relief ring is sleeved on the lower valve housing through the through hole, an inner diameter of the through hole is smaller than the outer diameter of the valve seat portion, the pressure relief ring is slidably engaged with an inner wall corresponding to the receiving cavity, and one end of the third spring abuts against the pressure relief ring, the other end of the third spring is abutted against the inner wall of the main valve body, and the pressure relief ring is abutted against the valve seat part through the third spring;

10. The heat exchange assembly as claimed in claim 9, wherein the inner diameter of the receiving cavity is larger than that of the second opening, a step is formed between the receiving cavity and the second opening, one end of the third spring abuts against the step formed between the receiving cavity and the second opening, and the first valve port is relatively close to the second opening relative to the first gap;

11. A transmission oil temperature regulating system, characterized in that the transmission oil temperature regulating system comprises a transmission, a heat exchange assembly and an oil cooler, wherein the heat exchange assembly is the heat exchange assembly as claimed in any one of claims 1 to 9, the third port and the fourth port are directly or through pipelines communicated with an inlet and an outlet of the transmission, an outlet of one of the flow passages of the oil cooler is communicated with an inlet of the transmission through a pipeline, and an inlet of the flow passage of the oil cooler is communicated with the fifth port;