Refrigerating capacity adjusting structure of refrigeration compressor

Abstract

The utility model relates to the technical field of compressors, in particular to a refrigerating capacity adjusting structure of a refrigeration compressor, which comprises a valve body with an air inlet and an air outlet, a valve ball is arranged in the valve body, a via hole is arranged on the valve ball, the valve ball is fixedly connected at the bottom end of a valve rod, and the valve rod is rotatably connected in the valve body. The outer side of the valve body is fixedly provided with an adjusting mechanism for adjusting the opening degree of the valve ball through the return air temperature so as to control the refrigerating capacity of the compressor; the adjusting mechanism comprises a temperature sensing assembly connected with the air return pipe, the temperature sensing assembly is connected with a push rod, the push rod is movably connected to one end of the toothed plate, and a limiting ring making contact with one end of the toothed plate is further fixedly arranged on the outer wall of the push rod. According to the refrigerating capacity adjusting structure of the refrigeration compressor, the air inflow of the compressor is automatically adjusted through the temperature of the air flowing back from the evaporator of the compressor, stepless adjustment of the refrigerating capacity of the compressor is achieved, the problem that the service life is affected due to frequent starting of the compressor can be avoided, and stable operation of the compressor can also be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a refrigeration capacity regulating structure of a refrigeration compressor. Background Art

[0002] In the refrigeration system, the cooling capacity regulation of the compressor is one of the key technologies to achieve efficient operation of the system and energy saving. However, in the prior art, people usually control the cooling capacity output by the compressor by controlling the start and stop of the compressor. Although this method can also achieve the purpose of controlling the output cooling capacity and then controlling the temperature of the refrigerator; however, there is a defect that when the ambient temperature is high, after the refrigerator is working, the compressor is turned off after the internal temperature drops, and the compressor is started again after the temperature rises again, and this is repeated to ensure that the refrigerator is in the appropriate temperature area, but because the compressor is frequently started, it will affect the service life of the compressor. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a refrigeration capacity adjustment structure for a refrigeration compressor, which solves the technical problem that the service life of the compressor is affected by frequent startup.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a refrigeration compressor cooling capacity adjustment structure, comprising a valve body with an air inlet and an air outlet, a valve ball is arranged in the valve body, a through hole is provided on the valve ball, the valve ball is fixedly connected to the bottom end of the valve stem, the valve stem is rotatably connected to the valve body, and an adjustment mechanism is fixedly arranged on the outer side of the valve body to adjust the valve ball opening according to the return air temperature to control the cooling capacity of the compressor;

[0005] The regulating mechanism includes a temperature sensing component connected to the return air pipe, a push rod is connected to the temperature sensing component, the push rod is movably connected to one end of the tooth plate, a limiting ring in contact with one end of the tooth plate is fixedly provided on the outer wall of the push rod, a gear fixedly connected to the top of the valve stem is provided on one side of the tooth plate, and a reset component is provided on the outer side of the end of the push rod away from the temperature sensing component.

[0006] Preferably, the temperature sensing component includes a temperature sensing cylinder arranged in the return air pipe, an evaporative liquid is provided at the bottom of the temperature sensing cylinder, a piston 1 is provided above the evaporative liquid, the temperature sensing cylinder is fixedly connected to the fixed cylinder through a connecting pipe, and a piston 2 fixedly connected to one end of the push rod is provided in the fixed cylinder.

[0007] Preferably, the fixing cylinder is fixed to the outer side of the valve body via a bracket.

[0008] Preferably, the tooth plate is slidably disposed in a guide seat, and the guide seat is fixed to the valve body via a mounting seat.

[0009] Preferably, the reset assembly includes a spring sleeved on the outer wall of the push rod, the spring is arranged between the tooth plate and the adjustment seat, the push rod is sleeved in the adjustment seat, an adjustment hole is opened on the adjustment seat, and an adjustment bolt threadedly connected to the side wall of the guide seat is arranged in the adjustment hole.

[0010] Preferably, a sealing member located outside the valve stem is provided in the valve body.

[0011] By means of the above technical solution, the utility model provides a refrigeration compressor refrigeration capacity adjustment structure, which has at least the following beneficial effects:

[0012] 1. The refrigeration capacity adjustment structure of the refrigeration compressor is provided with an adjustment mechanism. The temperature of the gas returned from the evaporator of the compressor is used to drive the push rod to move the tooth plate. The tooth plate adjusts the opening of the valve ball through the meshing action with the gear. The larger the opening, the more air intake. Conversely, the smaller the opening, the less air intake. The air intake of the compressor can be automatically adjusted to achieve stepless adjustment of the refrigeration capacity of the compressor, which can avoid the problem of frequent startup of the compressor affecting the service life and ensure the stable operation of the compressor.

[0013] 2. The refrigeration capacity adjustment structure of the refrigeration compressor is provided with a reset component. When the return air temperature decreases, the push rod can be quickly reset by utilizing the elastic force of the spring, thereby avoiding the problem of slow rotation speed of the valve ball caused by untimely reset of the push rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the temperature sensing component of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the reset assembly of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the internal section of the valve body of the utility model.

[0019] Reference numerals:

[0020] 1. Valve body; 2. Valve ball; 3. Valve stem; 4. Seal; 5. Adjustment mechanism; 51. Temperature sensing assembly; 511. Temperature sensing cylinder; 512. Piston 1; 513. Connecting pipe; 514. Fixed cylinder; 515. Piston 2; 52. Push rod; 53. Limiting ring; 54. Tooth plate; 55. Guide seat; 56. Mounting seat; 57. Gear; 58. Reset assembly; 581. Spring; 582. Adjustment seat; 583. Adjustment bolt. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The purpose of adjusting the cooling capacity of the compressor is to achieve precise control and optimized operation of the refrigeration system. Here are some of the main reasons: 1. Adapt to different working conditions: Different environmental conditions and usage requirements may require different cooling capacities. By adjusting the cooling capacity of the compressor, the refrigeration system can maintain stable operating effects under different working conditions and improve the adaptability and flexibility of the system. 2. Energy and electricity saving: Adjusting the cooling capacity of the compressor according to actual needs can avoid over-cooling, reduce energy consumption and operating costs. By accurately controlling the cooling capacity, the energy efficiency of the system can be improved, and energy and electricity saving can be achieved. 3. Improve refrigeration effect: Adjusting the cooling capacity of the compressor according to actual needs can improve the effect and performance of the refrigeration system. By accurately controlling the cooling capacity, the system can perform better in terms of cooling speed, temperature control, etc., and improve the overall performance of the refrigeration system.

[0023] Embodiment 1:

[0024] Based on the technical defects of the existing technology that affect the service life of the compressor due to frequent startup, please refer to Figure 1-Figure 4 The utility model provides a refrigeration capacity adjustment structure for a refrigeration compressor, which uses the temperature of the gas returned from the evaporator of the compressor to adjust the opening of the valve ball 2, and then can automatically adjust the air intake of the compressor to achieve the adjustment of the refrigeration capacity of the compressor, which can avoid the problem of frequent startup of the compressor affecting the service life, and can also ensure the stable operation of the compressor. The adjustment mechanism 5 has a valve body 1 with an air inlet and an air outlet, a valve ball 2 is arranged in the valve body 1, a through hole is arranged on the valve ball 2, the valve ball 2 is fixedly connected to the bottom end of the valve stem 3, the valve stem 3 is rotatably connected in the valve body 1, and an adjustment mechanism 5 is fixedly arranged on the outside of the valve body 1 to adjust the opening of the valve ball 2 by the return air temperature to control the refrigeration capacity of the compressor; the valve body 1 is installed at the air inlet of the compressor, and the return air temperature of the return air pipe is used to control the operation of the adjustment mechanism 5, and the adjustment mechanism 5 drives the valve stem 3 and the valve ball 2 to move to adjust the opening of the valve ball 2, so as to achieve the purpose of adjusting the air intake.

[0025] To facilitate automatic adjustment of the compressor's cooling capacity, please refer to Figure 1The regulating mechanism 5 includes a temperature sensing component 51 connected to the return air pipe, a push rod 52 is connected to the temperature sensing component 51, and the push rod 52 is movably connected to one end of the tooth plate 54. A limit ring 53 in contact with one end of the tooth plate 54 is fixed on the outer wall of the push rod 52. A gear 57 fixed to the top of the valve stem 3 is provided on one side of the tooth plate 54. A reset component 58 is provided on the outer side of the end of the push rod 52 away from the temperature sensing component 51. The temperature sensing component 51 is affected by the return air temperature to generate power to drive the push rod 52 to move. The push rod 52 drives the tooth plate 54 to move through the limit ring 53. The tooth plate 54 meshes with the gear 57. The valve stem 3 and the valve ball 2 are driven to rotate to adjust the opening of the valve ball 2; when the return air temperature rises, it means that the cooling effect in the condenser is not good. At this time, the adjustment mechanism 5 will correspondingly increase the opening of the valve ball 2 to increase the air intake of the compressor, thereby appropriately increasing its refrigeration capacity to improve the cooling effect of the condenser; conversely, when the return air temperature decreases, the adjustment mechanism 5 will reduce the opening of the valve ball 2 to reduce the refrigeration capacity of the compressor to maintain the stable operation of the system, and use the return air temperature to enable the compressor to automatically adjust the refrigeration capacity under different working conditions to meet different refrigeration needs and improve the energy efficiency and stability of the system.

[0026] To facilitate the power supply to the push rod 52, please refer to Figure 2 The temperature sensing component 51 includes a temperature sensing cylinder 511 arranged in the return air pipe, an evaporative liquid is arranged at the bottom of the temperature sensing cylinder 511, a piston 1 512 is arranged above the evaporative liquid, the temperature sensing cylinder 511 is fixedly connected to the fixed cylinder 514 through a connecting pipe 513, and a piston 2 515 fixedly connected to one end of the push rod 52 is arranged in the fixed cylinder 514. When the temperature sensing cylinder 511 is affected by the return air temperature, the evaporative liquid begins to change into a gaseous state after the temperature rises, thereby causing the air pressure in the temperature sensing cylinder 511 to increase and push the piston 1 512 to move upward, so that the air above the piston 1 512 enters the fixed cylinder 514 through the connecting pipe 513 and pushes the piston 2 515 to move, thereby moving the push rod 52.

[0027] In order to conveniently fix the fixing cylinder 514, the fixing cylinder 514 is fixed to the outside of the valve body 1 through a bracket, and the fixing cylinder 514 can be firmly installed by using the bracket.

[0028] To ensure that the tooth plate 54 is more stable when moving, the tooth plate 54 is slidably set in the guide seat 55, and the guide seat 55 is fixed to the valve body 1 through the mounting seat 56. The guide seat 55 provides a limiting guide for the tooth plate 54, so that the tooth plate 54 is not easy to shake when moving horizontally.

[0029] In order to improve the sealing performance of the inner side of the valve body 1, a sealing member 4 is provided in the valve body 1 and is located outside the valve stem 3, so as to improve the sealing performance between the valve stem 3 and the valve body 1 and reduce leakage.

[0030] Embodiment 2:

[0031] When the return air temperature drops, the evaporative liquid inside the temperature sensing cylinder 511 liquefies and the air pressure decreases. At this time, the piston 1 512 and the piston 2 515 move slowly. In order to facilitate the rapid reset of the tooth plate 54 and the push rod 52, please refer to Figure 3 On the basis of the first embodiment, the reset assembly 58 includes a spring 581 sleeved on the outer wall of the push rod 52, the spring 581 is arranged between the tooth plate 54 and the adjustment seat 582, the push rod 52 is sleeved in the adjustment seat 582, the adjustment seat 582 is provided with an adjustment hole, and the adjustment hole is provided with an adjustment bolt 583 threadedly connected to the side wall of the guide seat 55. Under the elastic force of the spring 581, the tooth plate 54 and the push rod 52 can be pushed to move, so that they can be quickly reset. At the same time, the position of the adjustment seat 582 can be adjusted by adjusting the bolt 583, thereby adjusting the elastic force of the spring 581 to ensure that the spring 581 can provide appropriate elastic force.

[0032] It can be known from the above embodiment that: the valve body 1 is installed at the air inlet of the compressor, and the temperature sensing cylinder 511 is installed in the return air pipe of the condenser. The opening of the valve ball 2 is adjusted by the change of the return air temperature. The specific movement process is that when the return air temperature rises, the temperature sensing cylinder 511 is affected by the return air temperature. After the temperature rises, the evaporating liquid begins to change into a gaseous state, thereby causing the air pressure in the temperature sensing cylinder 511 to increase and push the piston 1 512 upward, so that the air above the piston 1 512 enters through the connecting pipe 513. The push rod 52 moves into the fixed cylinder 514 and pushes the piston 2 515 to move, thereby moving the push rod 52, which drives the tooth plate 54 to move through the limit ring 53, and the tooth plate 54 drives the valve stem 3 and the valve ball 2 to rotate through the meshing action with the gear 57 to increase the opening of the valve ball 2. Conversely, when the return air temperature decreases, the evaporating liquid inside the temperature sensing cylinder 511 is liquefied, the air pressure is reduced, and under the elastic force of the spring 581, the tooth plate 54 and the push rod 52 can be pushed to reset and move, thereby reducing the opening of the valve ball 2.

[0033] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A refrigeration compressor refrigeration capacity adjustment structure, comprising a valve body (1) having an air inlet and an air outlet, a valve ball (2) being arranged in the valve body (1), a through hole being provided in the valve ball (2), the valve ball (2) being fixedly connected to the bottom end of a valve stem (3), and the valve stem (3) being rotatably connected in the valve body (1), characterized in that: The outer side of the valve body (1) is provided with a regulating mechanism (5) for adjusting the opening of the valve ball (2) according to the return air temperature to control the refrigeration capacity of the compressor; The regulating mechanism (5) comprises a temperature sensing component (51) connected to the return air pipe, a push rod (52) being connected to the temperature sensing component (51), the push rod (52) being movably connected to one end of a toothed plate (54), a limiting ring (53) being fixedly provided on the outer wall of the push rod (52) and contacting one end of the toothed plate (54), a gear (57) fixedly connected to the top of the valve stem (3) being provided on one side of the toothed plate (54), and a reset component (58) being provided on the outer side of one end of the push rod (52) away from the temperature sensing component (51).

2. The refrigeration capacity adjustment structure of the refrigeration compressor according to claim 1, characterized in that: The temperature sensing component (51) comprises a temperature sensing cylinder (511) arranged in the return air pipe, an evaporative liquid is arranged at the bottom of the temperature sensing cylinder (511), a piston 1 (512) is arranged above the evaporative liquid, the temperature sensing cylinder (511) is fixedly connected to a fixed cylinder (514) through a connecting pipe (513), and a piston 2 (515) fixedly connected to one end of a push rod (52) is arranged in the fixed cylinder (514).

3. The refrigeration capacity adjustment structure of the refrigeration compressor according to claim 2, characterized in that: The fixing cylinder (514) is fixedly connected to the outside of the valve body (1) via a bracket.

4. The refrigeration capacity adjustment structure of the refrigeration compressor according to claim 1, characterized in that: The tooth plate (54) is slidably arranged in the guide seat (55), and the guide seat (55) is fixedly connected to the valve body (1) via a mounting seat (56).

5. The refrigeration compressor refrigeration capacity adjustment structure according to claim 4, characterized in that: The reset assembly (58) comprises a spring (581) sleeved on the outer wall of the push rod (52), the spring (581) being arranged between the tooth plate (54) and the adjustment seat (582), the push rod (52) being sleeved in the adjustment seat (582), an adjustment hole being provided on the adjustment seat (582), and an adjustment bolt (583) being threadedly connected to the side wall of the guide seat (55) being provided in the adjustment hole.

6. The refrigeration capacity adjustment structure of the refrigeration compressor according to claim 1, characterized in that: A sealing member (4) is provided in the valve body (1) and is located outside the valve stem (3).

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