Automobile air conditioner evaporator assembly

Abstract

The utility model provides an automobile air conditioner evaporator assembly which solves the problem that an evaporator core of an existing evaporator assembly is not easy to disassemble. The automobile air conditioner evaporator assembly comprises a shell, an evaporator core and a fan, the evaporator core and the fan are arranged in the shell, an air inlet and an air outlet are formed in the shell, the evaporator core is arranged on the inner side of the air inlet, the fan is arranged on the inner side of the air outlet, an expansion valve is connected to the evaporator core, and the expansion valve is connected with an air conditioner pipeline through a detachable connecting assembly. The evaporator core body is detachably connected into the shell. The evaporator core body is detachably connected in the shell, and the expansion valve is connected with the air conditioner pipeline through the detachable connecting assembly, so that the evaporator core body is convenient to disassemble, and bacteria on the evaporator core body are convenient to clean; the locking screw and the connecting bolt extend in the vertical direction, operation of the tool is facilitated, and the dismounting and mounting efficiency can be effectively improved; after the evaporator assembly is assembled, the evaporator assembly is good in stability, and all connecting positions are high in reliability.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile air conditioners and relates to an automobile air conditioner evaporator assembly. Background Art

[0002] Automobile air conditioning uses media to adjust the air in the car so that it can meet the human body's comfort needs in terms of temperature, humidity, flow rate and cleanliness, prevent or remove fog, frost and ice and snow on the glass, ensure the health of passengers and driving safety, provide a comfortable riding environment for passengers, and create good working conditions for drivers. As one of the important components in the automobile air conditioning system, the evaporator not only affects the refrigeration performance of the automobile air conditioning system, but also directly affects the actual refrigeration effect in the car.

[0003] The applicant has invented an automobile air-conditioning evaporator assembly [authorization announcement number is CN 219115186U], comprising a shell, an evaporator core and a fan are arranged in the shell, an air inlet is arranged on one side of the shell, the evaporator core is located at the air inlet, an expansion valve is arranged at the liquid inlet of the evaporator core, an air outlet is arranged at the bottom of the shell, and the fan is arranged at the air outlet.

[0004] The evaporator core is prone to breeding bacteria and needs to be removed and sterilized regularly. However, the evaporator core is fixed in the outer shell and is usually fixed with multiple screws. It takes a long time to disassemble and assemble the evaporator core, and the work efficiency is low. Utility Model Content

[0005] The utility model aims to solve the above problems in the prior art and proposes an automobile air-conditioning evaporator assembly with high disassembly and assembly efficiency.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] The automobile air-conditioning evaporator assembly comprises an outer shell, an evaporator core and a fan arranged in the outer shell. The outer shell is provided with an air inlet and an air outlet. The evaporator core is arranged on the inner side of the air inlet. The fan is arranged on the inner side of the air outlet. The evaporator core is connected to an expansion valve. The evaporator core is detachably connected in the outer shell.

[0008] When the fan is working, the outside air enters through the air inlet, passes through the evaporator core, enters the shell, and is discharged from the air outlet under the action of the fan. Since the evaporator core is detachably connected to the shell, it is easy to disassemble the evaporator core, which is conducive to cleaning the bacteria on the evaporator core.

[0009] In the above-mentioned automobile air-conditioning evaporator assembly, the inner bottom surface of the outer shell is fixedly connected to two limit stop edges which are arranged opposite to each other and have an inverted "L" shape in longitudinal cross section. A guide groove is formed between the limit stop edge and the inner bottom surface of the outer shell. The two guide grooves are parallel and arranged opposite to each other. Limit parts are respectively provided on both sides of the evaporator core. The limit parts are slidably fitted in the guide grooves arranged opposite to each other. A locking structure is also provided between the evaporator core and the outer shell for fixing the evaporator core moved into place.

[0010] The limiting part and the guide groove are slidably matched to limit the evaporator core so that it can only slide along the guide groove and be fixed by the locking structure to achieve the purpose of completely positioning the evaporator core. The installation is convenient and fast, which is conducive to the disassembly and assembly of the evaporator core.

[0011] In the above-mentioned automobile air-conditioning evaporator assembly, the locking structure includes a first connecting flange arranged on the inner side of the outer shell, a second connecting flange arranged on the evaporator core and located above the first connecting flange, a threaded through hole arranged on the first connecting flange, a connecting through hole arranged on the second connecting flange, and a connecting bolt passing through the connecting through hole and threadedly connected to the threaded through hole. The first connecting flange is parallel to the inner bottom surface of the outer shell, and the second connecting flange is attached to the first connecting flange.

[0012] The first connecting flange is arranged on the side of the housing with the air inlet. When installing, align the limiting part with the guide groove, and then insert the limiting part into the guide groove. When the evaporator core moves into position, the second connecting flange moves into position on the first connecting flange. At this time, the threaded through hole and the connecting through hole are coaxial. After the connecting bolt passes through the connecting through hole and is threadedly connected with the threaded through hole, the evaporator core is fixed. Only one connecting bolt is arranged on the entire evaporator core, which is conducive to improving the efficiency of disassembling and assembling the evaporator core.

[0013] In the above-mentioned automobile air-conditioning evaporator assembly, one end of the first connecting flange close to the expansion valve has a vertically arranged first abutting surface, and when the second connecting flange abuts against the first abutting surface, the threaded through hole is coaxial with the connecting through hole.

[0014] It is helpful to quickly move the evaporator core into place and improve installation efficiency.

[0015] In the above-mentioned automobile air-conditioning evaporator assembly, the limit stop has a notch on its edge for the limit part to enter the guide groove from top to bottom, and the end of the first connecting flange away from the expansion valve has a vertically arranged second abutment surface, and when the second connecting flange abuts against the second abutment surface, the limit part is located directly above the notch.

[0016] In the above-mentioned automobile air-conditioning evaporator assembly, the outer shell includes a shell body and a cover body, the upper edge of the shell body has a third connecting flange folded inwardly, and the cover body and the third connecting flange are detachably connected by screws.

[0017] In the above automobile air conditioner evaporator assembly, an air filter is provided on the outside of the air inlet to filter impurities in the air and prevent the impurities from entering the housing.

[0018] Compared with the prior art, the automobile air-conditioning evaporator assembly has the following advantages: since the evaporator core is detachably connected in the outer shell, the evaporator core is easy to disassemble, which is beneficial to cleaning the bacteria on the evaporator core; the evaporator core is only provided with one connecting bolt, which is beneficial to improving the efficiency of disassembling and assembling the evaporator core. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the evaporator assembly provided by the utility model.

[0020] Figure 2 It is an exploded diagram of the expansion valve and the connecting seat.

[0021] Figure 3 It is a cross-sectional view of the expansion valve when connected to the connecting seat.

[0022] Figure 4 This is a schematic diagram of the installation of the evaporator core.

[0023] Figure 5 It is an exploded diagram of the evaporator core and shell.

[0024] In the figure, 11, shell; 111, air inlet; 112, first connecting flange; 113, first abutting surface; 114, second abutting surface; 115, third connecting flange; 12, cover; 2, evaporator core; 21, limit portion; 22, second connecting flange; 3, expansion valve; 31, plug-in portion; 4, air conditioning pipeline; 5, connecting seat; 51, high-pressure connector; 52, low-pressure connector; 53, connecting hole; 54, inclined surface; 55, recess; 6, locking screw; 61, conical surface; 7, limit stop edge; 71, notch; 8, air filter element. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] like Figure 1The automobile air conditioner evaporator assembly shown includes a housing, an evaporator core 2 disposed in the housing, and a fan. The housing includes a shell 11 and a cover 12. The upper edge of the shell 11 has a third connecting flange 115 folded inward. The cover 12 is detachably connected to the third connecting flange 115 by screws. An air inlet 111 is disposed on the front side of the shell 11, and an air outlet is disposed on the bottom side of the shell 11. The evaporator core 2 is disposed on the inner side of the air inlet 111, and an air filter 8 for filtering impurities in the air is disposed on the outer side of the air inlet 111. The fan is disposed on the inner side of the air outlet. When the fan is working, external air enters through the air inlet 111, passes through the evaporator core 2, enters the housing, and is discharged from the air outlet under the action of the fan.

[0027] like Figure 1 As shown, the evaporator core 2 is connected to an expansion valve 3 located outside the shell, an opening is opened on the shell 11, and the connecting pipe between the expansion valve 3 and the evaporator core 2 is located in the opening. The expansion valve 3 is connected to the air-conditioning pipeline 4 through a detachable connecting assembly. The evaporator core 2 is detachably connected in the shell, which is convenient for disassembly of the evaporator core 2 and is beneficial for cleaning bacteria on the evaporator core 2.

[0028] like Figure 2 and Figure 3 As shown, the detachable connection assembly includes a connection seat 5, the air-conditioning pipeline 4 is connected to the connection seat 5, and a high-pressure connector 51 and a low-pressure connector 52 are provided on the connection seat 5 to cooperate with the high-pressure connection hole of the expansion valve 3, and the axes of the high-pressure connector 51 and the low-pressure connector 52 are parallel. The connection seat 5 is provided with a connection hole 53 located between the high-pressure connector 51 and the low-pressure connector 52, and the extension direction of the connection hole 53 is parallel to the axis of the high-pressure connector 51. The expansion valve 3 is fixedly connected with a plug-in portion 31 to cooperate with the connection hole 53, and the plug-in portion 31 is threadedly connected with a locking screw 6 perpendicular to the axis of the high-pressure connector 51, and an extrusion structure is provided between the locking screw 6 and the connection seat 5 for making the connection seat 5 close to the expansion valve 3 when tightened.

[0029] Normally, the plugging direction of the high-voltage connector 51 and the high-voltage connection hole extends horizontally. If the locking screw 6 is also set horizontally, there is no operating space in the vehicle body for tools such as a screwdriver to tighten it. Therefore, the locking screw 6 is set perpendicular to the axis of the high-voltage connector 51, that is, the locking screw 6 is set vertically, and the locking screw 6 can be screwed from top to bottom, which is easy to operate.

[0030] During connection, the high-pressure connector 51 is inserted into the high-pressure connection hole, and the low-pressure connector 52 is inserted into the low-pressure connection hole. To ensure the reliability of the connection, the closer the distance between the connector 5 and the expansion valve 3 is, the better. Therefore, an extrusion structure is provided, and the connector 5 can be closely attached to the expansion valve 3 while tightening the locking screw 6. In order to improve the sealing performance, sealing rings are provided on the high-pressure connector 51 and the low-pressure connector 52.

[0031] like Figure 3 As shown, the length of the plug-in portion 31 is greater than the length of the connecting hole 53, and the extrusion structure includes an inclined surface 54 provided on the connecting seat 5 and a conical surface 61 provided on the rod head of the locking screw 6. The inclined surface 54 is located on the side of the locking screw 6 close to the expansion valve 3. During the process of tightening the locking screw 6, the conical surface 61 squeezes the inclined surface 54 so that the connecting seat 5 is close to the expansion valve 3.

[0032] The inclined surface 54 is located directly above the connecting hole 53, and the distance from the inclined surface 54 to the connecting hole 53 gradually decreases along the plugging direction of the plug-in portion 31. When the locking screw 6 is screwed, the rod head of the locking screw 6 gradually approaches the plug-in portion 31, and the conical surface 61 arranged thereon continuously squeezes the inclined surface 54, thereby pushing the connecting seat 5 closer to the expansion valve 3, effectively ensuring the reliability and sealing of the connection between the high-pressure connector 51 and the high-pressure connecting hole, and the low-pressure connector 52 and the low-pressure connecting hole.

[0033] A threaded hole is provided on the plug-in portion 31 , and the locking screw 6 is threadedly connected to the threaded hole. For easy operation, the locking screw 6 is a hexagon socket screw, and the lower end surface of the rod head is provided with a conical surface 61 , and the axis of the conical surface 61 is coaxial with the axis of the locking screw 6 .

[0034] like Figure 2 and Figure 3 As shown, a recess 55 for accommodating a locking screw 6 is provided on the side of the connecting seat 5 facing away from the expansion valve 3 , and the inclined surface 54 and the locking screw 6 are located in the recess 55 , so that the locking screw 6 does not protrude from the outer surface of the connecting seat 5 .

[0035] like Figure 4 and Figure 5 As shown, the inner bottom surface of the shell is fixedly connected with two oppositely arranged limit stop edges 7 with an inverted "L" shape in longitudinal section, and a guide groove is formed between the limit stop edge 7 and the inner bottom surface of the shell. The two guide grooves are parallel and oppositely arranged. The extension direction of the guide groove is the same as the extension direction of the plug-in portion 31. Limiting portions 21 are respectively provided on both sides of the evaporator core 2. The limiting portions 21 are slidably fitted in the guide grooves opposite to them. A locking structure for fixing the evaporator core 2 moved into place is also provided between the evaporator core 2 and the shell.

[0036] The limiting part 21 is slidably matched with the guide groove to limit the evaporator core 2 so that it can only slide along the guide groove and be fixed by the locking structure to achieve the purpose of completely positioning the evaporator core 2. The installation is convenient and fast, which is conducive to the disassembly and assembly of the evaporator core 2.

[0037] like Figure 4 and Figure 5As shown, the locking structure includes a first connecting flange 112 arranged on the inner side of the outer shell, a second connecting flange 22 arranged on the evaporator core 2 and located above the first connecting flange 112, a threaded through hole arranged on the first connecting flange 112, a connecting through hole arranged on the second connecting flange 22, and a connecting bolt passing through the connecting through hole and threadedly connected to the threaded through hole. The first connecting flange 112 is parallel to the inner bottom surface of the outer shell, and the second connecting flange 22 is attached to the first connecting flange 112. The extension direction of the connecting bolt is parallel to the extension direction of the locking screw 6.

[0038] The first connecting flange 112 is arranged on the side of the housing having the air inlet 111. During installation, the limiting portion 21 is aligned with the guide groove, and then the limiting portion 21 is inserted into the guide groove. When the evaporator core 2 is moved into position, the second connecting flange 22 is moved into position on the first connecting flange 112. At this time, the threaded through hole and the connecting through hole are coaxial. After the connecting bolt is passed through the connecting through hole and threadedly connected with the threaded through hole, the evaporator core 2 is fixed. Only one connecting bolt is arranged on the entire evaporator core 2, which is conducive to improving the efficiency of disassembling and assembling the evaporator core 2.

[0039] like Figure 5 As shown, the first connecting flange 112 has a vertically arranged first abutting surface 113 at one end close to the expansion valve 3. When the second connecting flange 22 abuts against the first abutting surface 113, the threaded through hole is coaxial with the connecting through hole, which is conducive to quickly moving the evaporator core 2 into place.

[0040] like Figure 5 As shown, the limit stop edge 7 has a notch 71 for the limit portion 21 to enter the guide groove from top to bottom, and the end of the first connecting flange 112 away from the expansion valve 3 has a vertically arranged second abutment surface 114, and when the second connecting flange 22 abuts against the second abutment surface 114, the limit portion 21 is located directly above the notch 71.

[0041] During installation, the second connection flange 22 is pressed against the second abutting surface 114 from top to bottom against the first connection flange 112. At this time, the limiting portion 21 is aligned with the notch 71, and the limiting portion 21 enters the guide groove through the notch 71, and then the evaporator core 2 is horizontally moved toward the expansion valve 3 until the second connection flange 22 abuts against the first abutting surface 113, and then the evaporator core 2 is fixed by the connecting bolts. In this process, the plug-in portion 31 is gradually inserted into the connection hole 53, the high-pressure connector 51 is gradually inserted into the high-pressure inlet hole, and the low-pressure connector 52 is gradually inserted into the low-pressure connection hole. When the evaporator core 2 is fixed, the plug-in portion 31 extends from the other end of the connection hole 53. From the top down, the threaded hole provided on the plug-in portion 31 can be observed, and then the locking screw 6 is inserted from the top down, and the locking screw 6 is threadedly connected with the threaded hole. In the process of tightening the locking screw 6, the conical surface 61 gradually squeezes the inclined surface 54, so that the connection seat 5 gradually approaches the expansion valve 3.

[0042] The evaporator core 2 is fixed to the shell 11 by only one connecting bolt, and the expansion valve 3 is connected to the connecting seat 5 by only one locking screw 6. The operation is convenient and fast, which improves the disassembly and assembly efficiency and saves costs.

[0043] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An automobile air-conditioning evaporator assembly, characterized in that: The invention comprises a shell, an evaporator core (2) arranged in the shell, and a fan, wherein the shell is provided with an air inlet (111) and an air outlet, the evaporator core (2) is arranged on the inner side of the air inlet (111), the fan is arranged on the inner side of the air outlet, the evaporator core (2) is connected to an expansion valve (3), and the evaporator core (2) is detachably connected in the shell; the inner bottom surface of the shell is fixedly connected with two limit stop edges (7) which are arranged opposite to each other and have an inverted "L" shape in longitudinal section, a guide groove is formed between the limit stop edge (7) and the inner bottom surface of the shell, the two guide grooves are arranged in parallel and opposite to each other, and limit portions (21) are respectively provided on both sides of the evaporator core (2), and the limit portions (21) are slidably fitted in the inner bottom surface of the shell. In the guide groove arranged opposite thereto, a locking structure for fixing the evaporator core (2) moved into position is also arranged between the evaporator core (2) and the shell; the locking structure comprises a first connecting flange (112) arranged on the inner side of the shell, a second connecting flange (22) arranged on the evaporator core (2) and located above the first connecting flange (112), a threaded through hole arranged on the first connecting flange (112), a connecting through hole arranged on the second connecting flange (22), and a connecting bolt passing through the connecting through hole and threadedly connected to the threaded through hole, wherein the first connecting flange (112) is parallel to the inner bottom surface of the shell, and the second connecting flange (22) is attached to the first connecting flange (112).

2. The automobile air-conditioning evaporator assembly according to claim 1, characterized in that: The end of the first connecting flange (112) close to the expansion valve (3) has a vertically arranged first abutment surface (113), and when the second connecting flange (22) abuts against the first abutment surface (113), the threaded through hole is coaxial with the connecting through hole.

3. The automobile air-conditioning evaporator assembly according to claim 2, characterized in that: The limit stop edge (7) has a notch (71) for the limit portion (21) to enter the guide groove from top to bottom, and the end of the first connecting flange (112) away from the expansion valve (3) has a vertically arranged second abutment surface (114), and when the second connecting flange (22) abuts against the second abutment surface (114), the limit portion (21) is located directly above the notch (71).

4. The automobile air-conditioning evaporator assembly according to claim 1, characterized in that: The housing comprises a shell (11) and a cover (12); the upper edge of the shell (11) has a third connecting flange (115) folded inwards; the cover (12) and the third connecting flange (115) are detachably connected via screws.

Images