Automobile air conditioner expansion valve

Abstract

The utility model discloses an automobile air conditioner expansion valve which comprises an expansion valve body, a high-pressure coolant inlet is formed in the expansion valve body, a filter plate is arranged at the position, close to the high-pressure coolant inlet, in the expansion valve body, and an opening groove is formed in the position, corresponding to the filter plate, of the expansion valve body. An opening groove is formed in the expansion valve body, a mounting plate is movably inserted in the opening groove, the filter plate is mounted in the mounting plate and is in threaded connection with the mounting plate, fixing blocks are fixedly connected to the two sides of the mounting plate, and rectangular limiting frames are fixedly connected to the positions, corresponding to the fixing blocks, of the two sides of the expansion valve body. According to the expansion valve, the limiting insertion block, the rectangular limiting frame, the limiting assembly, the mounting plate, the open groove and other structures are used in cooperation, the filter plate can be clamped and mounted on the expansion valve body, a user can conveniently replace the filter plate without disassembling the expansion valve body, operation is easy, time and labor are saved, and practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of expansion valve especially relates to a kind of automobile air conditioner expansion valve. BACKGROUND

[0002] Expansion valve is an important component in refrigeration system, generally installs between liquid reservoir and evaporator.Expansion valve makes liquid refrigerant of medium temperature high pressure become low temperature low pressure wet steam by throttling, then refrigerant absorbs heat in evaporator to achieve refrigeration effect, expansion valve controls valve flow by the superheat degree change of evaporator end, to prevent the phenomenon of evaporator area utilization and knocking cylinder.

[0003] As Figure 1 As shown in the Chinese utility model patent with application No.202123351056.6, a kind of durable mute's automobile air conditioner expansion valve is disclosed, including expansion valve body, high pressure coolant inlet, low pressure coolant outlet and expansion chamber are equipped in the expansion valve body……The inner wall of high pressure coolant inlet is fixedly connected with filter screen base and first spring seat, the bottom of filter screen base is fixedly connected with filter screen, the design of second spring and sealing ring has good shock absorption and anti-impact effect, while effectively reducing the generation of noise, effectively prolongs the service life of expansion valve and improves the noise pollution in vehicle compartment, effectively improves the comfort in vehicle compartment, filter screen can effectively filter out the impurities in coolant, effectively avoid the impurities in coolant to jam push rod and steel ball, greatly prolongs the service life of expansion valve.

[0004] The above-mentioned patent can effectively filter out the impurities in the coolant by the setting of filter screen, but due to the accumulation of filtered impurities, the filter screen will be blocked after a long time of use, affecting the filtering effect, and the above-mentioned lacks the mechanism of conveniently taking out the filter screen, when the filter screen needs to be replaced, the user needs to first disassemble the expansion valve body, then disassemble and replace the filter screen, the operation steps are complicated, time-consuming and laborious, the filter screen cannot be conveniently replaced, and there is certain limitation, which needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art, and provides an automobile air conditioner expansion valve.

[0006] To achieve the above object, the utility model discloses the following technical scheme: a kind of automobile air conditioner expansion valve, including expansion valve body, high-pressure coolant inlet is equipped on the expansion valve body, the position of the expansion valve body is equipped with filter plate close to high-pressure coolant inlet, opening slot is set up in the position of the expansion valve body corresponding filter plate, mounting plate is movably inserted in the inside of opening slot, the filter plate is installed in the inside of mounting plate and is threadedly connected with mounting plate, fixed block is fixedly connected on the both sides of mounting plate, rectangular limit frame is fixedly connected on the both sides of expansion valve body and the position corresponding fixed block, limit insert block is fixedly connected on the side of mounting plate close to rectangular limit frame, device slot is set up in the top and bottom of limit insert block, limit assembly is arranged in the inside of device slot, the fixed block is arranged with rectangular limit frame abutting.

[0007] As further description of the above technical solution: the limit assembly includes sliding block that is slidably installed in the inside of device slot, the sliding block is fixedly connected with limit block, and the side of the sliding block away from the limit block is fixedly connected with spring, the other end of the spring is fixedly connected with the inner wall of device slot, the side of the limit block close to rectangular limit frame is on the same plane with rectangular limit frame.

[0008] As further description of the above technical solution: the end of the limit block away from the sliding block is movably penetrated through limit insert block and extends to the outside of limit insert block, the end of the limit block located outside limit insert block and the side away from mounting plate is provided with guide inclined surface one.

[0009] As further description of the above technical solution: the edge of the side of limit insert block away from mounting plate is provided with guide inclined surface two.

[0010] As further description of the above technical solution: the limit insert block is adaptively arranged with rectangular limit frame.

[0011] As further description of the above technical solution: the top of the filter plate is fixedly connected with knob, the mounting plate is fixedly connected with handle.

[0012] As further description of the above technical solution: the top and bottom of the mounting plate are provided with mounting slot, the inside of mounting slot is embedded with sealing ring, and the mounting plate is interference fit with the inner wall of opening slot through sealing ring.

[0013] The utility model has the following beneficial effects:

[0014] 1. Compared with the prior art, the automobile air conditioner expansion valve can clamp and install the filter plate on the expansion valve body through the cooperation of the limiting plug, the rectangular limiting frame, the limiting assembly, the mounting plate and the open slot, so that the user can conveniently replace the filter plate without disassembling the expansion valve body, the operation is simple, time and labor are saved, and the practicality is high.

[0015] 2. Compared with the prior art, the automobile air conditioner expansion valve can improve the sealing performance of the connection between the mounting plate and the open slot through the arrangement of the sealing ring, avoid leakage of the coolant, and ensure that the expansion valve body can normally operate. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of an automobile air conditioner expansion valve in the prior art.

[0017] Figure 2 It is a whole structure three-dimensional schematic view of an automobile air conditioner expansion valve.

[0018] Figure 3 It is another angle three-dimensional schematic view of the whole structure of the automobile air conditioner expansion valve.

[0019] Figure 4 It is a horizontal cross-sectional view of the expansion valve body of the automobile air conditioner expansion valve.

[0020] Figure 5 It is an explosion view of the mounting plate and the rectangular limiting frame of the automobile air conditioner expansion valve.

[0021] Figure 6 It is an explosion view of the mounting plate and the sealing ring of the automobile air conditioner expansion valve.

[0022] Figure 7 It is an internal structure schematic view of the limiting plug of the automobile air conditioner expansion valve.

[0023] Legend:

[0024] 1, expansion valve body; 2, high-pressure coolant inlet; 3, open slot; 4, mounting plate; 5, fixed block; 6, rectangular limiting frame; 7, limiting plug; 8, device slot; 9, sliding block; 10, filter plate; 11, limiting block; 12, spring; 13, guide slope one; 14, guide slope two; 15, knob; 16, handle; 17, mounting slot; 18, sealing ring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0026] With reference to Figures 2-7 The utility model provides a kind of automobile air conditioner expansion valve: including expansion valve body 1 (expansion valve body 1 uses existing mature technology, its specific structure and principle can refer to the Chinese patent with application No. 202123351056.6, named: a durable mute automobile air conditioner expansion valve), high pressure coolant inlet 2 is equipped on expansion valve body 1, filter plate 10 is equipped at the position close to high pressure coolant inlet 2 in expansion valve body 1, opening groove 3 is set up in the position corresponding filter plate 10 on expansion valve body 1, mounting plate 4 is movably inserted in the inside of opening groove 3, filter plate 10 is installed in the inside of mounting plate 4 and is threadedly connected with mounting plate 4, fixed block 5 is fixedly connected on the both sides of mounting plate 4, rectangular limit frame 6 is fixedly connected on the both sides of expansion valve body 1 and the position corresponding fixed block 5, limit insert block 7 is fixedly connected on the side of mounting plate 4 close to rectangular limit frame 6, device slot 8 is set up on the top and bottom of limit insert block 7, limit assembly is arranged in the inside of device slot 8, guide slope two 14 is set up on the edge of the side of limit insert block 7 away from mounting plate 4, limit insert block 7 is set up with rectangular limit frame 6 matching;

[0027] By the cooperation of limit insert block 7, rectangular limit frame 6, limit assembly, mounting plate 4 and opening groove 3, filter plate 10 can be clamped and installed on expansion valve body 1, so that user can conveniently replace filter plate 10 without disassembling expansion valve body 1, and the operation is simple, time-saving and labor-saving, and the practicability is strong.

[0028] Limit assembly includes sliding block 9 slidably installed in the inside of device slot 8, limit block 11 is fixedly connected on sliding block 9, and spring 12 is fixedly connected on the side of sliding block 9 away from limit block 11, the other end of spring 12 is fixedly connected with the inner wall of device slot 8, the end of limit block 11 away from sliding block 9 is movably penetrated through limit insert block 7 and extends to the outside of limit insert block 7, and guide slope one 13 is set up on the end of limit block 11 located outside limit insert block 7 and away from the side of mounting plate 4.

[0029] Knob 15 is fixedly connected on the top of filter plate 10, handle 16 is fixedly connected on mounting plate 4.

[0030] The top and bottom of the mounting plate 4 are provided with mounting grooves 17, the inside of the mounting grooves 17 is embedded with sealing rings 18, the mounting plate 4 is in interference fit with the inner wall of the open groove 3 through the sealing rings 18, through the setting of the sealing rings 18, the sealing property of the connection between the mounting plate 4 and the open groove 3 can be improved, the leakage of the coolant is avoided, and the normal operation of the expansion valve body 1 is ensured.

[0031] Working principle: when in use, the impurities in the coolant entering the inside of the expansion valve body 1 from the high-pressure coolant inlet 2 can be filtered and intercepted through the setting of the filter plate 10, the damage of the internal precise structure of the expansion valve body 1 caused by the impurities entering the inside of the expansion valve body 1 is effectively avoided, and the service life of the expansion valve body 1 is improved.

[0032] When the expansion valve body 1 is used for a long time, the impurities are easy to accumulate on the filter plate 10 and cause blockage, in order to ensure the filtering effect of the filter plate 10, the user needs to replace or clean and maintain it, the limiting block 11 is pressed to move to the inside of the device groove 8, until the end of the limiting block 11 away from the limiting plug 7 is in the same plane with the limiting plug 7, then the handle 16 is held and pulled away from the expansion valve body 1, the mounting plate 4 is driven to exit the open groove 3, the disassembly of the mounting plate 4 is realized, then the knob 15 is held and screwed, the filter plate 10 is disconnected with the mounting plate 4, the filter plate 10 can be disassembled, the user can replace or clean and maintain the filter plate 10, then the user installs the new or clean filter plate 10 on the mounting plate 4 (i.e. threadedly connected with the mounting plate 4), then the mounting plate 4 is inserted into the open groove 3, through the setting of the sealing ring 18, the sealing property of the connection between the mounting plate 4 and the open groove 3 can be improved, the leakage of the coolant is avoided.

[0033] And in the process of inserting the mounting plate 4 into the open groove 3, the limiting plugs 7 on both sides of the mounting plate 4 are aligned with the rectangular limiting frame 6 and are inserted, through the setting of the guide slope two 14, the limiting plugs 7 are easily inserted into the rectangular limiting frame 6, when the guide slope one 13 on the limiting block 11 abuts against the inner wall of the rectangular limiting frame 6, under the guiding effect of the guide slope one 13 on the limiting block 11, the limiting block 11 moves to the inside of the device box, and the spring 12 is extruded to be in the compressed state and store energy, when the fixed block 5 moves to abut against the rectangular limiting frame 6, the limiting block 11 just passes through the rectangular limiting frame 6 completely, then the limiting block 11 is pushed out of the device groove 8 by the elastic force of the spring 12, the limiting plug 7 and the rectangular limiting frame 6 are clamped and fixed, so that the replacement operation of the filter plate 10 is completed, the filter plate 10 can be replaced conveniently without disassembling the expansion valve body 1, the operation is simple and convenient, and the practicality is strong.

[0034] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A kind of automobile air conditioner expansion valve, including expansion valve body (1), high-pressure coolant inlet (2) is equipped on the expansion valve body (1), the filter plate (10) is equipped in the expansion valve body (1) near the position of high-pressure coolant inlet (2), it is characterized by: The opening slot (3) is arranged on the expansion valve body (1) corresponding to the position of the filter plate (10), the mounting plate (4) is movably arranged in the opening slot (3), the filter plate (10) is mounted in the mounting plate (4) and is threadedly connected with the mounting plate (4), the fixing blocks (5) are fixedly connected to the two sides of the mounting plate (4), the rectangular limiting frames (6) are fixedly connected to the two sides of the expansion valve body (1) and correspond to the positions of the fixing blocks (5), the limiting insert blocks (7) are fixedly connected to the side of the mounting plate (4) close to the rectangular limiting frames (6), the device grooves (8) are arranged in the top and bottom of the limiting insert block (7), and the limiting assembly is arranged in the device grooves (8).

2. The automotive air conditioning expansion valve according to claim 1, wherein: The limiting assembly comprises the sliding blocks (9) slidably arranged in the device grooves (8), the limiting blocks (11) are fixedly connected to the sliding blocks (9), the springs (12) are fixedly connected to the sides of the sliding blocks (9) away from the limiting blocks (11), and the other ends of the springs (12) are fixedly connected to the inner walls of the device grooves (8).

3. The automotive air conditioning expansion valve according to claim 2, wherein: The limiting blocks (11) movably pass through the limiting insert blocks (7) and extend to the outside of the limiting insert blocks (7) away from the sliding blocks (9), the guiding inclined surfaces one (13) are arranged at the ends of the limiting blocks (11) located outside the limiting insert blocks (7) and away from the mounting plates (4).

4. The automotive air conditioning expansion valve according to claim 1, wherein: The guiding inclined surfaces two (14) are arranged at the edges of the limiting insert blocks (7) away from the mounting plates (4).

5. The automotive air conditioning expansion valve according to claim 1, wherein: The limiting insert blocks (7) are matched with the rectangular limiting frames (6).

6. The automotive air conditioning expansion valve according to claim 1, wherein: The knobs (15) are fixedly connected to the top of the filter plate (10), and the handles (16) are fixedly connected to the mounting plates (4).

7. The automotive air conditioning expansion valve according to claim 1, wherein: The mounting grooves (17) are arranged in the top and bottom of the mounting plates (4), the sealing rings (18) are embedded in the mounting grooves (17), and the mounting plates (4) are in interference fit with the inner walls of the opening slots (3) through the sealing rings (18).

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