Thermal expansion valve convenient to install

Abstract

The utility model discloses a thermostatic expansion valve convenient to install, and relates to the technical field of thermostatic expansion valves. The thermal expansion valve comprises a thermal expansion valve shell, a temperature sensing component is movably arranged on the thermal expansion valve shell, an installation cover integrally formed with the thermal expansion valve shell is arranged at the top end of the thermal expansion valve shell, a sealing membrane is arranged in the installation cover, and the temperature sensing component comprises a thermal execution cover and a capillary tube integrally formed with the thermal execution cover. One end of the capillary tube is connected with a temperature wrap. According to the thermostatic expansion valve, the temperature sensing component and the thermostatic expansion valve shell can be conveniently installed and connected through the first installation component, and meanwhile the connection sealing performance of the temperature sensing component and the thermostatic expansion valve shell is guaranteed, so that when a structure in the temperature sensing component is damaged and leaks air, the temperature sensing component can be conveniently replaced, and the temperature sensing component is prevented from being damaged. And the stability and the sealing performance of connection between the thermostatic expansion valve shell and the temperature sensing component are further guaranteed through the arranged second mounting component.

Description

Technical Field

[0001] The utility model relates to the technical field of thermostatic expansion valves, and particularly relates to a thermostatic expansion valve which is convenient to install. Background Technique

[0002] The thermostatic expansion valve controls the opening of the expansion valve through the superheat of the gaseous refrigerant at the outlet of the evaporator, so it is widely used in non-full liquid evaporators. According to different balancing methods, the thermostatic expansion valve can be divided into two types: internal balancing type and external balancing type. Different substances and methods can be used for charging in the temperature sensing system of the thermostatic expansion valve. The main methods include liquid charging type, gas charging type, cross liquid charging type, mixed charging type and adsorption charging type.

[0003] The thermostatic expansion valve mainly detects the temperature of the evaporator through the temperature sensing bulb. When the detected temperature changes, the internal gas pressure also changes, causing the sealing film to deform under the action of the pressure, so as to realize the adjustment of the opening of the refrigerant. Therefore, the sealing performance of the temperature sensing structure is crucial. However, during the use process, the capillary tube is prone to blockage and damage, which will affect its sealing performance. However, the temperature sensing structure is generally directly clamped on the shell of the thermostatic expansion valve under the action of pressure, or installed and connected by welding. It is generally difficult to replace it conveniently when the temperature sensing structure is damaged.

[0004] Therefore, a thermostatic expansion valve which is convenient to install is proposed. Content of the Utility Model

[0005] In order to solve the problems existing in the prior art, the utility model provides a thermostatic expansion valve which is convenient to install.

[0006] The utility model specifically adopts the following technical solutions to achieve the above purposes:

[0007] A thermostatic expansion valve which is convenient to install, including a thermostatic expansion valve shell, a temperature sensing component is movably arranged on the thermostatic expansion valve shell, an installation cover integrally formed with the thermostatic expansion valve shell is arranged at the top of the thermostatic expansion valve shell, a sealing diaphragm is arranged inside the installation cover, the temperature sensing component includes a thermostatic execution cover and a capillary tube integrally formed with the thermostatic execution cover, one end of the capillary tube is connected with a temperature sensing bulb, a first installation component for installing and connecting with the thermostatic execution cover is arranged on the thermostatic expansion valve shell, the first installation component includes a second connecting ring integrally formed with the installation cover and a first connecting ring integrally formed with the thermostatic execution cover, a plurality of first installation holes corresponding to each other in position are arranged on both the first connecting ring and the second connecting ring, a first installation bolt is movably inserted into the first installation hole, and a first installation nut is threadedly connected to the first installation bolt.

[0008] Further, first sealing grooves corresponding in position are formed in the first connecting ring and the second connecting ring, and a first sealing gasket is movably arranged inside the first sealing grooves.

[0009] Further, second mounting members are arranged on the first connecting ring and the second connecting ring. The second mounting members include a first mounting ring and a second mounting ring movably sleeved outside the first connecting ring and the second connecting ring. The inner arc degrees of the first mounting ring and the second mounting ring are fitted to the outer arc degrees of the first connecting ring and the second connecting ring.

[0010] Further, two first connecting lugs and second connecting lugs corresponding in position are respectively arranged on the first mounting ring and the second mounting ring. Second mounting holes corresponding in position are formed in the first connecting lugs and the second connecting lugs. A second mounting bolt is movably inserted into the second mounting holes, and a second mounting nut is threadedly connected to the second mounting bolt.

[0011] Further, second sealing grooves are formed in the first connecting ring and the second connecting ring, and a second sealing gasket is movably arranged inside the second sealing grooves. Limiting grooves are formed in the first connecting ring and the second connecting ring, and limiting rings adapted to the limiting grooves are arranged on the inner sides of the first mounting ring and the second mounting ring.

[0012] Further, both the first sealing gasket and the second sealing gasket are made of elastic materials.

[0013] The beneficial effects of the present utility model are as follows:

[0014] By means of the first mounting members provided in the present utility model, the temperature sensing member and the heat expansion valve housing can be conveniently installed and connected, and at the same time, the connection tightness thereof is ensured. Therefore, when the structure in the temperature sensing member is damaged and air leakage occurs, the temperature sensing member can be conveniently replaced. The second mounting members provided further ensure the stability and tightness of the connection between the heat expansion valve housing and the temperature sensing member. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is one of the sectional structural schematic diagrams of the mounting members of the present utility model;

[0017] Figure 3 is the other sectional structural schematic diagram of the mounting members of the present utility model;

[0018] Figure 4 is an enlarged view of part A of the present utility model.

[0019] Figure 5It is an enlarged view of part B of the present utility model.

[0020] Reference numerals: 1, thermal expansion valve housing; 2, temperature sensing member; 201, thermal actuator cover; 203, capillary tube; 204, temperature sensing bulb; 3, mounting cover; 301, sealing diaphragm; 4, first mounting member; 401, first connecting ring; 402, second connecting ring; 403, first sealing groove; 404, first sealing gasket; 405, first mounting hole; 406, first mounting bolt; 407, first mounting nut; 5, second mounting member; 501, first mounting ring; 5011, first connecting ear; 502, second mounting ring; 5021, second connecting ear; 503, second mounting hole; 504, second mounting bolt; 505, second mounting nut; 506, second sealing groove; 507, second sealing gasket; 508, limiting groove; 509, limiting ring. Detailed implementation manners

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. The components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0024] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model.

[0025] Such asFigures 1-5 As shown in the figure, a thermostatic expansion valve that is convenient for installation includes a thermostatic expansion valve housing 1. A temperature sensing member 2 is movably arranged on the thermostatic expansion valve housing 1. An installation cover 3 integrally formed with it is arranged at the top of the thermostatic expansion valve housing 1. A sealing diaphragm 202 is arranged inside the installation cover 3. The temperature sensing member 2 includes a thermostatic actuator cover 201 and a capillary 203 integrally formed with it. One end of the capillary 203 is connected with a temperature sensing bulb 204. A first installation member 4 for installing and connecting with the thermostatic actuator cover 201 is arranged on the thermostatic expansion valve housing 1. The first installation member 4 includes a second connection ring 402 integrally formed with the installation cover 3 and a first connection ring 401 integrally formed with the thermostatic actuator cover 201. A plurality of first installation holes 405 corresponding in position are formed on both the first connection ring 401 and the second connection ring 402. A first installation bolt 406 is movably inserted into the first installation hole 405. A first installation nut 407 is threadedly connected to the first installation bolt 406. Specifically, through the arranged first installation member 4, the separation and installation of the temperature sensing member 2 and the thermostatic expansion valve housing 1 can be realized. Therefore, when the structure inside the temperature sensing member 2 is damaged and air leakage occurs, the first installation member 4 can be used to separate and replace it, avoiding air leakage and making it difficult to adjust the flow opening of the refrigerant. When in use, both the first installation bolt 406 and the first installation nut 407 are of split design, so that they can be conveniently replaced to ensure the installation connection effect. The thermostatic expansion valve is a prior art, so the structural elements inside its housing are not described in detail in this technical solution.

[0026] As Figure 5 shown in the figure, first sealing grooves 403 corresponding in position are formed on both the first connection ring 401 and the second connection ring 402. A first sealing gasket 404 is movably arranged inside the first sealing groove 403. Specifically, tightening the first installation nut 407 can squeeze between the first connection ring 401 and the second connection ring 402 to realize their installation connection, facilitating the replacement of the temperature sensing member 2. At the same time, the arranged first sealing gasket 404 can be sealed by being squeezed to seal the first sealing groove 403. Therefore, it can play a good sealing role between the first connection ring 401 and the second connection ring 402, and can also avoid gas leakage at the connection between the temperature sensing member 2 and the thermostatic expansion valve housing 1.

[0027] As Figure 5 shown in the figure, a second installation member 5 is arranged on both the first connection ring 401 and the second connection ring 402. The second installation member 5 includes a first installation ring 501 and a second installation ring 502 movably sleeved on the outer sides of the first connection ring 401 and the second connection ring 402. The inner arc degrees of the first installation ring 501 and the second installation ring 502 fit the outer arc degrees of the first connection ring 401 and the second connection ring 402.

[0028] As Figure 4 shown, two first connecting lugs 5011 and second connecting lugs 5021 corresponding in position are respectively arranged on a first mounting ring 501 and a second mounting ring 502. Second mounting holes 503 corresponding in position are formed in the first connecting lugs 5011 and the second connecting lugs 5021. A second mounting bolt 504 is movably inserted into the second mounting holes 503, and a second mounting nut 505 is threadedly connected to the second mounting bolt 504. Specifically, the first mounting ring 501 and the second mounting ring 502 are clamped on the outer sides of a first connecting ring 401 and a second connecting ring 402. The second mounting bolt 504 and the second mounting nut 505 can be used to connect and fix the first mounting ring 501 and the second mounting ring 502. At the same time, the first mounting ring 501 and the second mounting ring 502 can also be fixed on the outer sides of the first connecting ring 401 and the second connecting ring 402. The second mounting bolt 504 and the second mounting nut 505 are of a split design, so that they can be conveniently replaced.

[0029] As Figure 5 shown, second sealing grooves 506 are formed in the first connecting ring 401 and the second connecting ring 402. Second sealing gaskets 507 are movably arranged inside the second sealing grooves 506. Limiting grooves 508 are formed in the first connecting ring 401 and the second connecting ring 402. Limiting rings 509 adapted to the limiting grooves 508 are arranged on the inner sides of the first mounting ring 501 and the second mounting ring 502. Specifically, the second sealing gaskets 507 are clamped between the first connecting ring 401 and the second connecting ring 402, so that they can play a further sealing role between the first connecting ring 401 and the second connecting ring 402, and further avoid gas leakage. The arranged limiting grooves 508 can play a limiting role on the first mounting ring 501 and the second mounting ring 502, and can prevent them from detaching from the first connecting ring 401 and the second connecting ring 402.

[0030] As Figure 5 shown, both the first sealing gasket 404 and the second sealing gasket 507 are made of elastic materials. Specifically, the first sealing gasket 404 and the second sealing gasket 507 have elasticity because they can be sleeved on the first sealing groove 403 and the second sealing groove 506.

[0031] In summary, the first mounting member 4 provided facilitates the installation and removal of the thermal expansion valve housing 1 and the temperature sensing member 2, thus facilitating the replacement of the temperature sensing member 2. Therefore, it can avoid the leakage of gas caused by damage to the structure in the temperature sensing member 2, making it difficult to adjust the flow opening of the refrigerant. It can also prevent damage to the structure in the temperature sensing member 2 from affecting the use of the entire thermal expansion valve. At the same time, the first mounting member 4 provided ensures the sealing between the thermal expansion valve housing 1 and the temperature sensing member 2, avoiding air leakage. The second mounting member 5 further ensures the stability and sealing of the connection between the thermal expansion valve housing 1 and the temperature sensing member 2, thus facilitating the replacement and installation of the temperature sensing member 2.

[0032] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A thermal expansion valve that is easy to install, comprising a thermal expansion valve housing (1), a temperature sensing component (2) movably arranged on the thermal expansion valve housing (1), a mounting cover (3) integrally formed with the thermal expansion valve housing (1) arranged at the top end thereof, a sealing diaphragm (301) arranged inside the mounting cover (3), the temperature sensing component (2) comprising a thermal execution cover (201) and a capillary tube (203) integrally formed with the thermal expansion valve housing (1), one end of the capillary tube (203) being connected to a temperature sensing package (204), characterized in that: The thermal expansion valve housing (1) is provided with a first mounting component (4) for mounting and connecting with the thermal actuator cover (201); the first mounting component (4) comprises a second connecting ring (402) integrally formed with the mounting cover (3) and a first connecting ring (401) integrally formed with the thermal actuator cover (201); the first connecting ring (401) and the second connecting ring (402) are both provided with a plurality of first mounting holes (405) corresponding to positions; a first mounting bolt (406) is movably inserted into the interior of the first mounting hole (405); and a first mounting nut (407) is threadedly connected to the first mounting bolt (406).

2. A thermal expansion valve that is easy to install according to claim 1, characterized in that: The first connecting ring (401) and the second connecting ring (402) are provided with first sealing grooves (403) at corresponding positions, and a first sealing gasket (404) is movably arranged inside the first sealing groove (403).

3. A thermal expansion valve that is easy to install according to claim 2, characterized in that: A second mounting component (5) is provided on the first connecting ring (401) and the second connecting ring (402), and the second mounting component (5) comprises a first mounting ring (501) and a second mounting ring (502) movably sleeved on the outer sides of the first connecting ring (401) and the second connecting ring (402), and the inner curvature of the first connecting ring (501) and the second connecting ring (502) fits with the outer curvature of the second connecting ring (402) of the first connecting ring (401).

4. A thermal expansion valve that is easy to install according to claim 3, characterized in that: The first mounting ring (501) and the second mounting ring (502) are respectively provided with a first connecting ear (5011) and a second connecting ear (5021) at two corresponding positions, and the first connecting ear (5011) and the second connecting ear (5021) are provided with a second mounting hole (503) at a corresponding position, and a second mounting bolt (504) is movably inserted inside the second mounting hole (503), and a second mounting nut (505) is threadedly connected to the second mounting bolt (504).

5. A thermal expansion valve that is easy to install according to claim 4, characterized in that: The first connecting ring (401) and the second connecting ring (402) are provided with a second sealing groove (506), a second sealing gasket (507) is movably arranged inside the second sealing groove (506), the first connecting ring (401) and the second connecting ring (402) are provided with a limiting groove (508), and the inner side of the first mounting ring (501) and the second mounting ring (502) are provided with a limiting ring (509) adapted to the limiting groove (508).

6. A thermal expansion valve that is easy to install according to claim 5, characterized in that: The first sealing gasket (404) and the second sealing gasket (507) are both made of elastic material.

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