Expansion valve for automobile air conditioner

Abstract

The utility model provides an expansion valve for an automobile air conditioner, which belongs to the technical field of expansion valves and comprises an expansion valve body, a first connecting pipe is mounted on one side of the expansion valve body, a second connecting pipe is mounted at the bottom of the expansion valve body, and a third connecting pipe is mounted on the other side of the expansion valve body. An upper cover plate is mounted at the top of the expansion valve body, a capillary tube is arranged on the surface of the upper cover plate, and a temperature sensing plate is mounted at one end of the outer side of the capillary tube. According to the scheme, the expansion valve is conveniently mounted on the surface of an automobile through the mounting mechanism, and the expansion valve body, the second connecting pipe and the upper cover plate are limited and clamped through the limiting and supporting mechanism; therefore, it is guaranteed that the expansion valve body is stable in installation, good in connection performance, not prone to shaking and good in refrigeration effect, the stability of the refrigeration performance is improved, the service life of the thermostatic expansion valve is prolonged, meanwhile, the expansion valve body is convenient to disassemble and replace, and use safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of expansion valve, specifically relates to an expansion valve for automobile air conditioner. BACKGROUND

[0002] Expansion valve is generally installed between condenser and evaporator, has the effect of throttling and pressure reduction, changes the refrigerant liquid of medium temperature high pressure before entering evaporator into low temperature low pressure wet steam refrigerant, and then refrigerant absorbs heat in evaporator to achieve refrigeration effect.In mechanical thermal expansion valve, H type thermal expansion valve is the reasonable throttling device recognized at home and abroad, its characteristics are external balance, internal temperature sensing and external adjustment, and can meet the requirements of high efficiency, anti-vibration and convenience of automobile air conditioner.H type thermal expansion valve is small in size but huge in effect, and its working quality directly determines the operation performance of the whole system.

[0003] The existing patent with patent No. CN104596167A and publication name of expansion valve for automobile air conditioner has a square shell. One side of the square shell is provided with a first outlet and a second inlet, and the first outlet and the second inlet are connected with the evaporator through pipelines. The other side adjacent to the side is provided with a first inlet and a second outlet, and the first inlet and the second outlet are connected with the condenser. Two L-shaped internal pipelines are arranged in the square shell, one of the two L-shaped internal pipelines is connected with the first inlet and the first outlet, and the other is connected with the second inlet and the second outlet. In this way, the air conditioner pipeline connected with the expansion valve and the evaporator is perpendicular to the pipeline connected with the expansion valve and the condenser.

[0004] Although the structure of the above-mentioned expansion valve enables the air conditioner pipeline to be directly arranged along the front wall metal plate, the air conditioner pipeline is away from the heat source of the front cabin, and the efficiency of the automobile air conditioner is improved, but the expansion valve is small in size and has no fixed mounting structure, so that it is easy to be unstable when being installed in the automobile refrigeration system, especially when the automobile is running, it is easy to shake and collide, so as to easily cause the expansion valve to be loose and damaged, the pipeline connection to be separated, and the adjustment and refrigeration effect to be poor. TECHNICAL CONTENT

[0005] The utility model aims at providing an expansion valve for automobile air conditioner, and aims at solving the problems in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0007] An expansion valve for an automobile air conditioner, comprising: an expansion valve body, a first connecting pipe is installed on one side of the expansion valve body, a second connecting pipe is installed on the bottom of the expansion valve body, a third connecting pipe is installed on the other side of the expansion valve body, an upper cover plate is installed on the top of the expansion valve body, a capillary tube is arranged on the surface of the upper cover plate, a temperature sensing plate is installed on one end outside of the capillary tube, a limiting support mechanism is arranged on the back of the expansion valve body, a mounting mechanism is installed on the surface of the limiting support mechanism, and a protection mechanism is arranged on the outside of the temperature sensing plate.

[0008] As a preferred scheme of the utility model, the limiting support mechanism comprises a support seat arranged on one side of the expansion valve body, guide rods are installed on the upper and lower sides of the inner surface of the support seat, two moving plates are slidably connected to the surface of the guide rods, dampers are installed on the opposite inner sides of the moving plates, buffer springs are sleeved on the outer sides of the dampers, the two ends of the buffer springs are in contact with the surfaces of the two moving plates respectively, a first clamping plate corresponding to the upper cover plate is installed on the surface of the upper moving plate, and a second clamping plate corresponding to the second connecting pipe is installed on the surface of the lower moving plate.

[0009] As a preferred scheme of the utility model, the surfaces of the two sides of the support seat are fixedly connected with shock-absorbing plates, a shock-absorbing frame is arranged on the surface of the outer side of the shock-absorbing plate, spring telescopic rods are fixedly connected to the inner walls of the two sides of the shock-absorbing frame, a moving rod is installed on the surface of one end of the inner side of the spring telescopic rod, a connecting piece is rotatably connected to the surface of the moving rod, and the connecting piece is rotatably connected to the surface of the shock-absorbing plate.

[0010] As a preferred scheme of the utility model, the surfaces of the two sides of the spring telescopic rod are provided with first guide grooves, and the moving rod is slidably connected to the surface of the first guide groove, the surface of the spring telescopic rod is provided with a second guide groove, and the connecting piece is slidably connected to the surface of the second guide groove.

[0011] As a preferred scheme of the utility model, the mounting mechanism comprises a connecting seat fixedly connected to the surface of the spring telescopic rod, a mounting seat is arranged on one side of the connecting seat, two sliding grooves are arranged on the surface of the connecting seat, two first bolts are rotatably connected to the surface of the mounting seat, the first bolts are slidably connected to the surface of the sliding grooves, and the surface of the connecting seat is provided with a first nut corresponding to the first bolt.

[0012] As a preferred scheme of the utility model, the protection mechanism comprises a limiting belt arranged on the outer side of the temperature sensing plate, a second nut is arranged on the surface of one end of the limiting belt, the surface of the limiting belt is provided with a second bolt corresponding to the second nut, and a plurality of limiting holes corresponding to the second bolt are arranged on the surface of the limiting belt.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The installation mechanism facilitates the installation of the expansion valve on the surface of the automobile, and the limiting and supporting mechanism limits and clamps the expansion valve body, the second connecting pipe and the upper cover plate, so that the expansion valve body is stably installed, has good connection performance, is not easy to shake and has good refrigeration effect, thereby improving the stability of the refrigeration performance and prolonging the service life of the thermal expansion valve, and the expansion valve body is convenient to disassemble and replace, improving the use safety. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application and explain the principles of the present application, and do not constitute a limitation of the present application.

[0016] In the drawings:

[0017] Figure 1 is a schematic diagram of the overall structure of the present application;

[0018] Figure 2 is an exploded schematic diagram of the structure of the present application;

[0019] Figure 3 is a schematic diagram of the limiting and supporting mechanism in the structure of the present application;

[0020] Figure 4 is a schematic diagram of the installation mechanism in the structure of the present application;

[0021] Figure 5 is a schematic diagram of the protection mechanism in the structure of the present application.

[0022] In the drawings: 1, expansion valve body; 2, first connecting pipe; 3, second connecting pipe; 4, third connecting pipe; 5, upper cover plate; 6, capillary; 7, temperature sensing plate; 8, limiting and supporting mechanism; 801, support seat; 802, guide rod; 803, moving plate; 804, damper; 805, buffer spring; 806, first clamping plate; 807, second clamping plate; 808, shock absorbing plate; 809, shock absorbing frame; 810, spring telescopic rod; 811, moving rod; 812, connecting piece; 813, first guide groove; 814, second guide groove; 9, installation mechanism; 901, connecting seat; 902, mounting seat; 903, sliding groove; 904, first nut; 905, first bolt; 10, protection mechanism; 1001, limiting belt; 1002, second nut; 1003, second bolt; 1004, limiting hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0024] Embodiment

[0025] Please refer to Figures 1-5 The technical solutions provided by the embodiments are as follows:

[0026] An expansion valve for an automobile air conditioner, comprising: an expansion valve body 1, a first connecting pipe 2 is installed on one side of the expansion valve body 1, a second connecting pipe 3 is installed at the bottom of the expansion valve body 1, a third connecting pipe 4 is installed on the other side of the expansion valve body 1, and an upper cover plate 5 is installed at the top of the expansion valve body 1, a capillary tube 6 is arranged on the surface of the upper cover plate 5, a temperature sensing plate 7 is installed at one end of the outer side of the capillary tube 6, a limiting support mechanism 8 is arranged at the back of the expansion valve body 1, an installation mechanism 9 is installed on the surface of the limiting support mechanism 8, a protection mechanism 10 is arranged on the outer side of the temperature sensing plate 7, the expansion valve is conveniently installed on the surface of the automobile through the installation mechanism 9, and the expansion valve body 1, the second connecting pipe 3 and the upper cover plate 5 are limited and clamped through the limiting support mechanism 8, so that the stability of the expansion valve body 1 installation is ensured, the connection performance is good, the expansion valve body 1 is not easy to shake and the refrigeration effect is good, thereby improving the stability of the refrigeration performance and prolonging the service life of the thermal expansion valve, and the expansion valve body 1 is conveniently disassembled and replaced, and the use safety is improved.

[0027] Specifically, the limiting support mechanism 8 comprises a support seat 801 arranged on one side of the expansion valve body 1, guide rods 802 are installed on the upper and lower sides of the inner surface of the support seat 801, two moving plates 803 are slidably connected to the surface of the guide rods 802, dampers 804 are installed on the opposite inner sides of the moving plates 803, buffer springs 805 are sleeved on the outer sides of the dampers 804, and the two ends of the buffer springs 805 are in contact with the surfaces of the two moving plates 803, respectively, a first clamping plate 806 corresponding to the upper cover plate 5 is installed on the surface of the upper moving plate 803, and a second clamping plate 807 corresponding to the second connecting pipe 3 is installed on the surface of the lower moving plate 803.

[0028] In the embodiment of the utility model, when the second connecting pipe 3 and the upper cover plate 5 driven by the expansion valve body 1 contact with the limiting support mechanism 8, the second connecting pipe 3 contacts with the second clamping plate 807, a transverse force is generated to the second clamping plate 807, the upper cover plate 5 generates a transverse force to the first clamping plate 806, at this time, the moving plate 803 stretches the damper 804 and the buffer spring 805, thereby limiting the upper cover plate 5 through the first clamping plate 806 and limiting the second connecting pipe 3 through the second clamping plate 807.

[0029] Specifically, the surfaces on both sides of the support base 801 are fixedly connected with shock-absorbing plates 808, the outer surfaces of the shock-absorbing plates 808 are provided with shock-absorbing frames 809, the inner walls of the shock-absorbing frames 809 are fixedly connected with spring telescopic rods 810, the inner surfaces of one ends of the spring telescopic rods 810 are mounted with moving rods 811, the surfaces of the moving rods 811 are rotatably connected with connecting pieces 812, the connecting pieces 812 are rotatably connected to the surfaces of the shock-absorbing plates 808, the surfaces of the spring telescopic rods 810 are provided with first guide grooves 813, and the surfaces of the moving rods 811 are slidably connected to the surfaces of the first guide grooves 813, the surfaces of the spring telescopic rods 810 are provided with second guide grooves 814, and the surfaces of the connecting pieces 812 are slidably connected to the surfaces of the second guide grooves 814.

[0030] In the embodiment of the utility model, when the expansion valve body 1 is subjected to pressure, the force is transmitted to the shock-absorbing plates 808 through the support base 801, the shock-absorbing plates 808 transmit the force to the spring telescopic rods 810 through the connecting pieces 812 and the moving rods 811, at this time, the spring telescopic rods 810 absorb the force and store energy, when the force disappears, the shock-absorbing plates 808 are reset, the moving rods 811 slide on the surfaces of the first guide grooves 813, and the connecting pieces 812 slide on the surfaces of the second guide grooves 814.

[0031] Specifically, the mounting mechanism 9 comprises a connecting base 901 fixedly connected to the surface of the spring telescopic rod 810, one side of the connecting base 901 is provided with a mounting base 902, the surface of the connecting base 901 is provided with two sliding grooves 903, the surface of the mounting base 902 is rotatably connected with two first bolts 905, the first bolts 905 are slidably connected to the surfaces of the sliding grooves 903, and the surface of the connecting base 901 is provided with first nuts 904 matched with the first bolts 905.

[0032] In the embodiment of the utility model, the mounting base 902 is mounted on the surface of the automobile, then the surface of the support base 801 is adjusted on the surface of the mounting base 902, and the first nuts 904 and the first bolts 905 are limited on the surfaces of the sliding grooves 903.

[0033] Specific, the protection mechanism 10 includes the limiting band 1001 arranged on the outer side of the temperature plate 7, the surface of one end of the limiting band 1001 is provided with the second nut 1002, the surface of the limiting band 1001 is provided with the second bolt 1003 matched with the second nut 1002, and the surface of the limiting band 1001 is provided with a plurality of limiting holes 1004 matched with the second bolt 1003.

[0034] In the embodiment of the utility model, the limiting band 1001 is arranged on the surface of the temperature plate 7, then the second bolt 1003 is inserted into the surface of the corresponding limiting hole 1004, and then the second nut 1002 is fixed by the second bolt 1003, so that the temperature plate 7 is protected.

[0035] Working principle: the surface of the automobile is installed on the mounting seat 902, then the surface of the supporting seat 801 is adjusted on the surface of the mounting seat 902, and is limited on the surface of the sliding groove 903 by the first nut 904 and the first bolt 905, the limiting band 1001 is arranged on the surface of the temperature plate 7, then the second bolt 1003 is inserted into the surface of the corresponding limiting hole 1004, then the second nut 1002 is fixed by the second bolt 1003, so that the temperature plate 7 is protected, and the expansion valve body 1, the second connecting pipe 3 and the upper cover plate 5 are limited and clamped by the limiting supporting mechanism 8, when the expansion valve body 1 drives the second connecting pipe 3 and the upper cover plate 5 to contact with the limiting supporting mechanism 8, the second connecting pipe 3 contacts with the second clamping plate 807, a transverse force is generated on the second clamping plate 807, and the upper cover plate 5 generates a transverse force on the first clamping plate 806, at this time, the moving plate 803 stretches the damper 804 and the buffer spring 805, so that the upper cover plate 5 is limited by the first clamping plate 806, the second connecting pipe 3 is limited by the second clamping plate 807, so that the expansion valve body 1 is stably installed, has good connection performance, is not easy to shake and has good refrigeration effect, when the expansion valve body 1 is pressed, the force is transmitted to the shock-absorbing plate 808 through the supporting seat 801, the shock-absorbing plate 808 is transmitted to the spring telescopic rod 810 through the connecting piece 812 and the moving rod 811, at this time, the spring telescopic rod 810 absorbs the force and charges, when the force disappears, the shock-absorbing plate 808 is reset, and the moving rod 811 slides on the surface of the first guide groove 813, and the connecting piece 812 slides on the surface of the second guide groove 814.

[0036] 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 have been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. An expansion valve for automotive air conditioning, characterized in that, Include: The expansion valve body (1), one side of the expansion valve body (1) is provided with first connecting pipe (2), the bottom of the expansion valve body (1) is provided with second connecting pipe (3), the other side of the expansion valve body (1) is provided with third connecting pipe (4), the top of the expansion valve body (1) is provided with upper cover plate (5), the surface of the upper cover plate (5) is provided with capillary tube (6), one end of the outer side of the capillary tube (6) is provided with temperature sensing plate (7), the back of the expansion valve body (1) is provided with limit support mechanism (8), the surface of the limit support mechanism (8) is provided with mounting mechanism (9), the outer side of the temperature sensing plate (7) is provided with protection mechanism (10).

2. The expansion valve for use in an automotive air conditioner according to claim 1, wherein The limit support mechanism (8) includes a support seat (801) provided on one side of the expansion valve body (1), guide rods (802) are mounted on the inner surface of the support seat (801) on both sides, two moving plates (803) are slidably connected to the surface of the guide rods (802), dampers (804) are mounted on the opposite inner sides of the moving plates (803), buffer springs (805) are sleeved on the outer sides of the dampers (804), and the two ends of the buffer springs (805) are in contact with the surfaces of the two moving plates (803), respectively, a first clamping plate (806) is mounted on the surface of the upper moving plate (803) and is adapted to the upper cover plate (5), and a second clamping plate (807) is mounted on the surface of the lower moving plate (803) and is adapted to the second connecting pipe (3).

3. The expansion valve according to claim 2, wherein The surfaces of the two sides of the support seat (801) are fixedly connected with shock absorbing plates (808), shock absorbing frames (809) are arranged on the surfaces of the outer sides of the shock absorbing plates (808), spring telescopic rods (810) are fixedly connected to the inner walls of the shock absorbing frames (809) on both sides, moving rods (811) are mounted on the inner surfaces of the spring telescopic rods (810), connecting pieces (812) are rotatably connected to the surfaces of the moving rods (811), and the connecting pieces (812) are rotatably connected to the surfaces of the shock absorbing plates (808).

4. The expansion valve according to claim 3, wherein First guide grooves (813) are formed in the surfaces of the two sides of the spring telescopic rods (810), the moving rods (811) are slidably connected to the surfaces of the first guide grooves (813), second guide grooves (814) are formed in the surfaces of the spring telescopic rods (810), and the connecting pieces (812) are slidably connected to the surfaces of the second guide grooves (814).

5. The expansion valve according to claim 4, wherein The mounting mechanism (9) includes a connecting seat (901) fixedly connected to the surface of the spring telescopic rod (810), a mounting seat (902) is arranged on one side of the connecting seat (901), two sliding grooves (903) are formed in the surface of the connecting seat (901), two first bolts (905) are rotatably connected to the surface of the mounting seat (902), the first bolts (905) are slidably connected to the surfaces of the sliding grooves (903), and first nuts (904) adapted to the first bolts (905) are arranged on the surface of the connecting seat (901).

6. The expansion valve for use in an automotive air conditioner according to claim 1, wherein The protection mechanism (10) comprises a limiting belt (1001) arranged outside the temperature sensing plate (7), a surface of one end of the limiting belt (1001) is provided with a second nut (1002), a surface of the limiting belt (1001) is provided with a second bolt (1003) matched with the second nut (1002), and the surface of the limiting belt (1001) is provided with a plurality of limiting holes (1004) matched with the second bolt (1003).

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