Valve body heat insulation structure

Abstract

The utility model discloses a valve body heat insulation structure, and relates to the technical field of valve body heat insulation, the valve body heat insulation structure comprises a thermostatic expansion valve and a temperature sensing bulb, four arc-shaped clamps which are consistent in structure and mutually symmetrical are arranged outside the temperature sensing bulb, and three heat insulation sheets which are the same in structure are fixedly arranged on the two side edges and the upper portion of the two arc-shaped clamps located on the upper portion; second heat conduction pipes with the same structure and installation mode are arranged on the sides, away from the arc-shaped clamps, of the three heat insulation pieces, vacuum heat insulation plates used for partition heat insulation are arranged on the sides, away from the heat insulation pieces, of the three second heat conduction pipes, and a plurality of first heat conduction pipes used for heat transfer are arranged in inner cavities of the four arc-shaped clamps at intervals in an array mode. The problems that the thermal expansion valve thermal bulb is affected by the external temperature, then the adjusting precision of the thermal expansion valve is affected, and induction of the thermal bulb on the superheat degree of a refrigerating system is affected due to the fact that the thermal bulb is moved are solved.

Description

Technical Field

[0001] The present application relates to the field of valve body thermal insulation technology, and in particular to a valve body thermal insulation structure. Background Art

[0002] The thermal expansion valve is an important automatic control component of the refrigeration system. It uses the temperature change of the temperature sensing package as a signal to adjust the valve opening and change the refrigerant flow. The existing thermal expansion valve is unstable during refrigeration tests of some air-conditioning systems, including expansion valves with different actuation values, which leads to a decrease in air-conditioning refrigeration performance.

[0003] For example, Chinese patent application number CN201920996915.0 discloses a thermal expansion valve with a heat insulating plate, which has the following shortcomings.

[0004] The above patent reduces the temperature sensing adjustment rate of the temperature sensing package by arranging a heat insulating sheet under the temperature sensing package, and reduces the system pressure fluctuation, thereby improving the stability of the cold circulation system of the automobile air conditioner while improving the refrigeration performance and the air outlet temperature. However, the heat insulating sheet alone cannot completely isolate the influence of the external temperature. If the temperature sensing package is affected by the external temperature, there will be errors in the superheat measured, which will affect the adjustment accuracy of the thermal expansion valve. In addition, the temperature sensing package and the evaporator outlet are usually fixed with a fixing clip. This fixation can easily cause the temperature sensing package to loosen during movement or vibration, resulting in a change in the fixed position. The movement of the position also affects the superheat of the temperature sensing package sensing refrigeration system. Utility Model Content

[0005] In order to improve the problem that the temperature-sensing package of the thermal expansion valve is affected by the external temperature, thereby affecting the adjustment accuracy of the thermal expansion valve, and the temperature-sensing package moves, thereby affecting the temperature-sensing package's sensing of the superheat of the refrigeration system, the present application provides a valve body insulation structure.

[0006] A valve body thermal insulation structure provided in this application adopts the following technical solution:

[0007] A valve body heat insulation structure, comprising a thermal expansion valve and a temperature sensing package, wherein the temperature sensing package is provided with four arc-shaped clips of the same structure and symmetrical to each other on the outside, and three heat insulation sheets of the same structure are fixed on both sides and the top of the two arc-shaped clips located at the top, and the three heat insulation sheets are provided with second heat conducting pipes of the same structure and installation method on the side away from the arc-shaped clips, and the three second heat conducting pipes are provided with vacuum insulation panels for partitioned heat insulation on the side away from the insulation sheets;

[0008] A number of first heat-conducting tubes for heat transfer are arranged in an array at intervals in the inner cavity of the four arc-shaped cards, and two clamps with the same structure are fixedly arranged on the upper part of the side wall of the two arc-shaped cards located at the lower part away from the thermal insulation plate, one of the clamps is located in the middle of the surface of one side of the arc-shaped card and is fixed with an arc-shaped fixing plate, and the arc-fixing plate is fixed on the side away from the clamp on the side of the clamp, and an inner shaft rod is movably provided in the middle of the outer shaft rod, and outer protective plates fixed to the vacuum insulation board are fixed at both ends of the inner shaft rod, and the other of the two clamps is located in the middle of the surface of one side of the arc-shaped card and is fixed with a transverse fixing plate.

[0009] By adopting the above technical scheme, a heat insulation sheet, a heat dissipation plate, a second heat-conducting pipe and a vacuum insulation plate are respectively arranged on the outer surfaces of the two arc-shaped cards located at the upper part, so that the external heat can be effectively isolated and prevented from entering the temperature-sensing bag in the arc-shaped card, so that the temperature-sensing bag's perception of the temperature of the evaporator opening is not affected, and the thermal expansion valve can be opened and closed more accurately. Through the mutual cooperation of the outer shaft rod, the inner shaft rod, the splint, the rubber strip, the transverse fixing plate and the bolts, the two arc-shaped cards located at the lower part can be rotated and can be fixed to the two arc-shaped cards at the upper part, so that the temperature-sensing bag and the evaporator opening pipe will not be displaced under the influence of vibration, etc., thereby ensuring that the temperature-sensing bag can perceive the evaporator opening more accurately.

[0010] Preferably, the outsides of the three second heat-conducting pipes are each provided with a heat dissipation plate fixedly connected to the three heat insulation sheets.

[0011] By adopting the above technical solution, the heat sink can not only dissipate heat but also support and fix the second heat pipe.

[0012] Preferably, the outsides of the plurality of first heat conducting pipes are each provided with a U-shaped groove opened inside the arc card.

[0013] By adopting the above technical solution, the U-shaped groove can better install, disassemble and replace the first heat pipe.

[0014] Preferably, the side of the clamping plate away from the arc-shaped fixing plate is arranged as two longitudinally symmetrical arc surfaces, and a plurality of rubber strips with the same structure are arranged in an array at intervals on the arc surfaces.

[0015] By adopting the above technical solution, the rubber strip arranged on the arc surface can be more closely attached to the temperature sensing package and the evaporator opening pipe, further enhancing the fixing effect.

[0016] Preferably, a cover plate for sealing is fixedly provided on a side of the vacuum insulation panel away from the heat dissipation plate.

[0017] By adopting the above technical solution, the cover plate can achieve a good sealing effect so that no air can enter the vacuum insulation panel under negative pressure conditions.

[0018] Preferably, a rotating shaft capable of rotating the two arc-shaped cards is provided at the lower docking positions of the two arc-shaped cards at the lower part.

[0019] By adopting the above technical solution, the rotating shaft can help the arc-shaped card located at the bottom to perform a rotating operation.

[0020] Preferably, a rubber pad fixed to the vacuum insulation panel is disposed at the upper portion of the transverse fixing plate, and a plurality of bolts movably penetrating and fixed to the transverse fixing plate are symmetrically disposed at the lower portion of the rubber pad.

[0021] By adopting the above technical solution, the fixing plate and the bolt cooperate with each other to fix the entire device.

[0022] Preferably, the two clamping plates fixedly connected to the two arc-shaped clips at the lower portion are both arranged to abut against the two arc-shaped clips at the upper portion.

[0023] By adopting the above technical solution, the two clamping plates can help the lower arc card to dock with the upper arc card and also play a limiting role.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The two upper arc cards are provided with heat insulation sheets, heat dissipation plates, second heat conduction pipes and vacuum insulation boards on three sides respectively, so that external heat cannot enter the temperature sensing package in the arc card, thereby affecting the temperature of the temperature sensing package to the evaporator opening, and further affecting the opening and closing of the thermal expansion valve;

[0026] 2. With the help of the mutual cooperation between the outer shaft and the inner shaft, and with the cooperation of the rotating shaft, the two arc-shaped clips at the bottom can be rotated to achieve the rapid installation and disassembly of the temperature sensing package and the evaporator opening pipe. At the same time, the horizontal fixing plate and the bolts are used to fix them. Under the action of the splint and the rubber strip, the temperature sensing package and the evaporator opening pipe are not easily displaced and have a good stabilizing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an overall schematic diagram of this application;

[0028] Figure 2 This is an overall diagram of the thermal insulation device of this application;

[0029] Figure 3 A cross-sectional schematic diagram of the present application;

[0030] Figure 4 An exploded view of the thermal insulation sheet and other thermal insulation materials of this application;

[0031] Figure 5This is a diagram showing the internal structure of the arc card of this application;

[0032] Figure 6 This is a structural exploded diagram of the position of the splint in this application;

[0033] Figure 7 This is a cross-sectional view of the structural connection relationship of the clamping plate position of this application.

[0034] Reference numerals: 1, thermal expansion valve; 2, temperature sensing package; 31, arc clamp; 32, U-shaped groove; 33, first heat conducting pipe;

[0035] 41. thermal insulation sheet; 42. heat dissipation plate; 43. second heat conducting pipe; 44. vacuum thermal insulation panel; 45. cover plate;

[0036] 51. Clamp; 52. Arc-shaped fixing plate; 53. Outer shaft; 54. Inner shaft; 55. Outer protective plate; 56. Rubber strip;

[0037] 6. Horizontal fixing plate; 7. Rotating shaft; 8. Bolts; 9. Rubber pad. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-Figure 7 This application is described in further detail.

[0039] An embodiment of the present application discloses a valve body thermal insulation structure.

[0040] Reference Figure 1-Figure 4 A valve body heat insulation structure includes a thermal expansion valve 1 and a temperature-sensing package 2 installed on an evaporator outlet pipe, and the temperature-sensing package 2 is provided with four arc-shaped clips 31 on the outside, and the structures of the four arc-shaped clips 31 are consistent and symmetrical to each other. The temperature-sensing package 2 is wrapped in the middle and upper part of the inner cavity formed by the four arc-shaped clips 31, and the side surfaces of the two arc-shaped clips 31 located at the upper part are fixed with two heat-insulating sheets 41 arranged symmetrically to each other, and the upper surfaces of the two arc-shaped clips 31 are also fixed with heat-insulating sheets 41, and the three heat-insulating sheets 41 are fixed at the structure. The structures and installation methods are the same, and the three heat insulation sheets 41 are fixedly provided with heat sinks 42 on the side surfaces away from the arc card 31, and the three heat insulation sheets 41 have the same structure and installation method, and second heat pipes 43 are provided in the three heat insulation sheets 42, and the side surfaces of the three heat insulation sheets 42 away from the three heat insulation sheets 41 are fixedly connected to the side surfaces of three vacuum insulation panels 44 used for partitioned heat insulation, and the vacuum insulation panels 44 are fixedly connected to a cover plate 45 used for sealing on the side away from the heat insulation sheets 42.

[0041] The four arc-shaped clips 31 are combined to wrap the temperature-sensing package 2 and the pipe at the outlet of the evaporator respectively, and the external heat is isolated by the heat insulation sheet 41 to prevent the external heat from affecting the temperature-sensing package 2 and thus affecting the accuracy of the valve opening and closing of the thermal expansion valve 1. The heat sink 42 arranged on one side of the heat insulation sheet 41 and the second heat pipe 43 inside the heat sink 42 can both isolate and conduct the external heat. Similarly, the interior of the vacuum insulation board 44 is in a vacuum state, which can effectively isolate a certain amount of external heat. The heat is isolated and conducted layer by layer through the vacuum insulation board 44, the second heat pipe 43, the heat sink 42, and the heat insulation sheet 41, so that the temperature-sensing package 2 is not affected by the external temperature, so that the thermal expansion valve 1 can accurately control the valve opening and closing.

[0042] Reference Figure 4-Figure 6 , and a plurality of U-shaped grooves 32 are provided in the arc card 31 at intervals of an array, and the structures of the plurality of U-shaped grooves 32 are the same, and a plurality of first heat-conducting tubes 33 are inserted in the inner cavities of the plurality of U-shaped grooves 32, and the plurality of first heat-conducting tubes 33 have the same structures and are spaced a certain distance apart from each other, and the plurality of first heat-conducting tubes 33 can be used for heat transfer, and the upper surfaces of the side walls of the two arc cards 31 at the lower part away from the heat insulation sheet 41 are fixedly connected to the surface of one side of the clamping plate 51, and the surfaces of one side of the two clamping plates 51 away from the arc fixing plate 52 are set as two arc surfaces, and the two arc surfaces are symmetrically arranged with each other in the longitudinal direction, so that the two arc surfaces can be respectively fitted and clamped with the outer surface of the temperature sensing package 2 and the evaporator outlet pipe for limiting, and the array is spaced apart on the two arc surfaces of the clamping plate 51 A plurality of rubber strips 56 are provided, and the plurality of rubber strips 56 are structurally identical and can limit the temperature sensing package 2 and the evaporator outlet pipe, and one of the two splints 51 is fixedly arranged on a plane of a side of the arc-shaped fixing plate 52 in the middle of a side surface fixedly connected to the arc-shaped clamp 31, and the side of the arc-shaped fixing plate 52 away from the splint 51 is also arranged as an arc-shaped surface, but the arc-shaped surface arranged on one side of the arc-shaped fixing plate 52 can be fixedly connected to the outer ring surface of the outer shaft rod 53, and an inner shaft rod 54 is movably provided through the middle of the outer shaft rod 53, and the connection between the inner shaft rod 54 and the outer shaft rod 53 has its own damping, and the two ends of the inner shaft rod 54 are fixedly connected to the side walls of the outer protective plate 55 on both sides, and the upper surface of the outer protective plate 55 is fixedly connected to the lower surface of the vacuum insulation panel 44.

[0043] The first heat-conducting tube 33 arranged inside the arc clamp 31 can effectively transfer the heat of the evaporator opening pipe to the temperature-sensing package 2, indirectly increasing the temperature-sensing area of ​​the temperature-sensing package 2, and the upper and lower arc surfaces of the clamp 51 can clamp and limit the temperature-sensing package 2 and the evaporator opening pipe, and a distance is left between the two clamps 51 for the temperature-sensing package 2 to contact the surface of the evaporator opening pipe, and the outer shaft rod 53 and the inner shaft rod 54 cooperate with each other to enable the clamp 51 to rotate, thereby opening the channel through which the temperature-sensing package 2 passes, and it is also convenient for disassembly and replacement, and the outer protective plate 55 is fixedly connected to the vacuum insulation plate 44 to support the clamp 51, the inner shaft rod 54 and the outer shaft rod 53 for rotation, so that the entire device can become a whole.

[0044] Reference Figure 5-Figure 7 , and two clamping plates 51, wherein the middle part of the surface of one side of the other clamping plate 51 fixed to the arc card 31 is fixedly connected to the surface of one side of the transverse fixing plate 6, and rubber pads 9 are arranged on the upper surface of the transverse fixing plate 6 in abutment with each other, and the rubber pad 9 is fixedly connected to the lower surface of the vacuum insulation board 44 on the surface of the side away from the transverse fixing plate 6, and a plurality of bolts 8 are symmetrically arranged at the lower part of the rubber pad 9, and the plurality of bolts 8 are arranged as needed, and the plurality of bolts 8 movably penetrate the transverse fixing plate 6, and the plurality of bolts 8 are fixed to the transverse fixing plate 6 by nuts, and the upper parts of the back planes of the two clamping plates 51 fixed to the two arc cards 31 at the lower part are both arranged in abutment with the lower surfaces of the inner cavities of the two arc cards 31 at the upper part and are limited to each other, and a rotating shaft 7 is arranged at the position where the lower parts of the two arc cards 31 at the lower part are butted with each other, and the rotating shaft 7 can make the two arc cards 31 rotate with each other so as to realize that the transverse fixing plate 6 and the bolts 8 can be aligned, inserted and fixed.

[0045] The rotating shaft 7 arranged at the lower part of the two arc-shaped clips 31 at the lower part can make the two arc-shaped clips 31 rotate, thereby helping the transverse fixing plate 6 fixed to the arc-shaped clip 31 to quickly dock with the bolts 8 arranged at the lower part of the rubber pad 9, and vice versa, a quick separation can be achieved. The setting of the rubber pad 9 can reduce part of the friction and shock absorption when contacting with the transverse fixing plate 6.

[0046] It should be noted that the thermal expansion valve 1 and the temperature sensing package 2 are both prior art, and their structural principles are not described in detail here.

[0047] The implementation principle of a valve body heat insulation structure of the embodiment of the present application is as follows: first, the two upper arc clamps 31 are put on the upper part of the temperature sensing package 2, and then the temperature sensing package 2 and the evaporator opening pipe are fitted together, and then the inner shaft rod 54 and the outer shaft rod 53 are rotated to cooperate with each other, so that the two lower arc clamps 31 can wrap the lower part of the evaporator opening pipe by rotation, and the two clamps 51 at this time can fill the gap between the temperature sensing package 2 and the evaporator opening pipe and clamp the temperature sensing package 2 and the evaporator opening pipe to limit the position, and the two lower arc clamps 3 While wrapping and limiting the evaporator opening pipe, the transverse fixing plate 6 will be connected with the bolt 8 at the bottom of the rubber pad 9 and fixed by a nut, and the first heat conducting pipe 33 arranged inside the arc clamp 31 can increase the heat transfer between the temperature sensing package 2 and the evaporator opening pipe, and the transverse fixing plate 6 and the bolt 8 cooperate with each other to reinforce the four arc clamps 31, the temperature sensing package 2 and the evaporator opening pipe, and the rubber strip 56 arranged on the arc surface of the clamp 51 can prevent the evaporator opening pipe from displacement caused by vibration or other external influences.

[0048] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A valve body heat insulation structure, comprising a thermal expansion valve (1) and a temperature sensing package (2), characterized in that: The temperature sensing package (2) is provided with four arc-shaped clips (31) of the same structure and symmetrical to each other on the outside, and three heat insulation sheets (41) of the same structure are fixedly provided on both sides and the top of the two arc-shaped clips (31) located at the top, and second heat conduction pipes (43) of the same structure and installation method are provided on the side away from the arc-shaped clips (31) of the three heat insulation sheets (41), and vacuum heat insulation panels (44) for partitioned heat insulation are provided on the side away from the heat insulation sheets (41) of the three second heat conduction pipes (43); A plurality of first heat conducting pipes (33) for heat transfer are arranged in an array at intervals in the inner cavity of the four arc-shaped cards (31); two clamping plates (51) of the same structure are fixedly provided on the upper part of the side wall of the two arc-shaped cards (31) located at the lower part away from the heat insulation plate (41); one of the clamping plates (51) is located at the middle of the surface of one side of the arc-shaped card (31) and is fixedly provided with an arc-shaped fixing plate (52); the arc-shaped fixing plate (52) is located at the side away from the clamping plate (51) and is fixedly provided with an outer shaft rod (53); an inner shaft rod (54) is movably provided through the middle of the outer shaft rod (53); both ends of the inner shaft rod (54) are fixedly connected to outer protective plates (55) fixedly connected to the vacuum heat insulation plate (44); and the other of the two clamping plates (51) is located at the middle of the surface of one side of the arc-shaped card (31) and is fixedly provided with a transverse fixing plate (6).

2. A valve body insulation structure according to claim 1, characterized in that: The three second heat conducting pipes (43) are each provided with a heat dissipation plate (42) fixedly connected to the three heat insulation sheets (41) on the outside.

3. A valve body thermal insulation structure according to claim 1, characterized in that: The outsides of the plurality of first heat conducting pipes (33) are each provided with a U-shaped groove (32) opened inside the arc-shaped clamp (31).

4. A valve body thermal insulation structure according to claim 1, characterized in that: The side of the clamping plate (51) away from the arc-shaped fixing plate (52) is arranged as two longitudinally symmetrical arc surfaces, and a plurality of rubber strips (56) with the same structure are arranged in an array at intervals on the arc surfaces.

5. A valve body thermal insulation structure according to claim 1, characterized in that: A cover plate (45) for sealing is fixedly provided on the side of the vacuum insulation panel (44) away from the heat dissipation panel (42).

6. A valve body heat insulation structure according to claim 1, characterized in that: A rotating shaft (7) capable of rotating the two arc-shaped clips (31) is provided at the lower docking position of the two arc-shaped clips (31) at the lower part.

7. A valve body heat insulation structure according to claim 1, characterized in that: A rubber pad (9) fixedly connected to the vacuum insulation panel (44) is disposed in contact with the upper portion of the transverse fixing plate (6), and a plurality of bolts (8) movably penetrating and fixed to the transverse fixing plate (6) are symmetrically disposed on the lower portion of the rubber pad (9).

8. A valve body heat insulation structure according to claim 1, characterized in that: The two clamping plates (51) fixedly connected to the two arc-shaped clamps (31) located at the lower part are both arranged to abut against the two arc-shaped clamps (31) located at the upper part.

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