Low pressure prevention device of refrigerating system

Abstract

The utility model provides a low pressure prevention device of a refrigerating system, and relates to the field of refrigerating systems. The low pressure prevention device of the refrigerating system comprises a refrigerating system shell and a sealing door plate, a linkage positioning module is fixedly arranged on one side of the sealing door plate, one side of the linkage positioning module is rotationally connected with one end of a curved linkage plate, and the other end of the curved linkage plate is fixedly connected with the bottom of a water drop linkage plate; one end of the water drop linkage plate is rotationally connected with one side of the first position control supporting block, and the other side of the first position control supporting block is fixedly connected with one end of the tough spring. According to the low pressure prevention device of the refrigerating system, the refrigerating system shell, the sealing door plate, the linkage positioning module, a curved linkage plate, a water drop linkage plate, a first position control supporting block, a tough spring, a second position control supporting block, a first positioning column, a second positioning column and an installation positioning bottom piece are arranged, so that internal parts can be conveniently overhauled or replaced; therefore, when a low-voltage condition occurs, a worker can carry out maintenance conveniently.

Description

Technical Field

[0001] The utility model relates to a low-pressure prevention device, in particular to a low-pressure prevention device for a refrigeration system, and belongs to the technical field of refrigeration systems. Background Art

[0002] The refrigeration system is a technology that absorbs or releases and transfers the surrounding heat by evaporating and condensing low-temperature substances. In the refrigeration system, the refrigerant is usually compressed into a high-temperature and high-pressure gas by a compressor, and then dissipated, cooled, and condensed into a liquid through a condenser. The pressure is then reduced through an expansion valve or a throttle valve, so that the refrigerant evaporates and absorbs the surrounding heat to produce a cooling effect. Finally, it is circulated and regenerated through the compressor to complete the entire refrigeration cycle.

[0003] After searching, a Chinese patent with publication number CN220269720U discloses a low-pressure prevention device for a small cold storage refrigeration system. A gas delivery pipeline is led out from the exhaust pipeline of the compressor. An energy solenoid valve and an energy regulator are arranged on the gas delivery pipeline. The end of the gas delivery pipeline is connected to a gas-liquid mixer. A liquid replenishment pipeline is arranged between the gas-liquid mixer and the terminal device. A liquid injection expansion valve and a liquid replenishment solenoid valve are arranged on the liquid replenishment pipeline. When the system low pressure is too low, the energy regulator adjusts the opening of the energy regulating valve in real time according to the system low pressure by bypassing the high-temperature and high-pressure refrigerant gas to maintain a stable system low pressure. During the gas replenishment process, when the suction temperature rises significantly, the medium-temperature and high-pressure refrigerant liquid is bypassed and throttled to mix in the gas-liquid mixer, thereby reducing the suction temperature, reducing the ineffective overheating of the system, and ensuring the effective cooling of the motor coil when the system is running, as well as the energy efficiency ratio when the system is running.

[0004] Although the above scheme can ensure the effective cooling of the motor coil when the system is running, as well as the energy efficiency ratio when the system is running, the low-pressure protection device in the above patent is difficult to conveniently inspect or replace the internal components. After the refrigeration system has been working for a long time, low-pressure conditions are inevitable, and timely inspections are required to ensure the normal operation of the refrigeration system. For this reason, we provide a low-pressure protection device for the refrigeration system to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The purpose of the present utility model is to provide a low-pressure protection device for a refrigeration system in order to solve the above-mentioned problem, so as to solve the problem in the above-mentioned reference document that it is difficult to conveniently inspect or replace internal components.

[0007] (II) Technical solution

[0008] The utility model is implemented through the following technical scheme: a low-pressure protection device for a refrigeration system comprises a refrigeration system shell and a sealing door plate, a linkage positioning module is fixedly arranged on one side of the sealing door plate, one side of the linkage positioning module is rotatably connected to one end of a curved linkage plate, the other end of the curved linkage plate is fixedly connected to the bottom of a water drop linkage plate, one end of the water drop linkage plate is rotatably connected to one side of a first position control support block, the other side of the first position control support block is fixedly connected to one end of a tough spring, the other end of the tough spring is fixedly connected to one side of a second position control support block, and the close fit between the components allows for convenient inspection or replacement of internal components, thereby ensuring the normal operation of the refrigeration system.

[0009] Preferably, the middle part of the second positioning support block is rotatably connected to the outer circumference of the first positioning column, and the middle part of the water drop linkage plate is rotatably connected to the outer circumference of the second positioning column. The setting of the second positioning column can effectively ensure the smooth rotation of the water drop linkage plate.

[0010] Preferably, the first positioning column and the second positioning column are both fixedly arranged on one side of the mounting positioning plate, and the other side of the mounting positioning plate is fixedly connected to one side of the inner wall of the refrigeration system shell. The setting of the refrigeration system shell can effectively protect the internal components and prevent the internal components from being disturbed by the outside world.

[0011] Preferably, one side of the sealing door panel is fixedly connected to one side of the guide control track, and the outer wall of the guide control track is slidably connected to the inner wall of the guide slide plate. The setting of the guide slide plate can effectively ensure the stability of subsequent components during movement and is not prone to tilting.

[0012] Preferably, the top of the guide slide plate is fixedly connected to one side of the positioning linkage shaft, and both ends of the positioning linkage shaft are rotatably arranged in a groove on one side of the refrigeration system shell. The setting of the positioning linkage shaft can make the components more flexible and less prone to jamming.

[0013] Preferably, a low-pressure warning structure is fixedly provided in the groove on the top of the refrigeration system shell, and a low-pressure sensor is fixedly provided at the bottom of the low-pressure warning structure. The low-pressure sensor is a prior art and will not be described in detail.

[0014] Preferably, a central control and a warning light are fixedly provided on the top of the low-voltage warning structure. The warning light is a prior art and will not be described in detail.

[0015] Preferably, the sealed door panel is provided with a handle, which is protruding from the other side of the sealed door panel. The provision of the sealed door panel facilitates maintenance of the refrigeration system at any time.

[0016] The utility model provides a low pressure prevention device for a refrigeration system, which has the following beneficial effects:

[0017] 1. The anti-low-pressure device of the refrigeration system can conveniently inspect or replace the internal components through the setting of the refrigeration system shell, the sealing door panel, the linkage positioning module, the curved linkage plate, the water drop linkage plate, the first control support block, the toughness spring, the second control support block, the first positioning column, the second positioning column, and the installation positioning film, so that it is convenient for the staff to carry out maintenance when a low-pressure condition occurs.

[0018] 2. The low-pressure prevention device of the refrigeration system can effectively monitor the refrigeration system in real time through the setting of guide control rails, guide slide plates, positioning linkage shafts, low-pressure early warning structures, low-pressure sensors, central control controllers, and warning lights, so as to determine whether a low-pressure condition occurs and provide staff for inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure inside the shell of the refrigeration system of the utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the installation positioning film of the utility model;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the guide slide plate of the utility model.

[0023]

Main component symbol description

[0024] 1. Refrigeration system housing; 2. Sealing door panel; 3. Linkage positioning module; 4. Curved linkage plate; 5. Water drop linkage plate; 6. First control support block; 7. Tough spring; 8. Second control support block; 9. First positioning column; 10. Second positioning column; 11. Install positioning film; 12. Guide control track; 13. Guide slide plate; 14. Positioning linkage shaft; 15. Low pressure warning structure; 16. Low pressure sensor; 17. Central control unit; 18. Warning light; 19. Handle. DETAILED DESCRIPTION

[0025] The embodiment of the utility model provides a low pressure prevention device for a refrigeration system.

[0026] See also Figure 1 , including a refrigeration system shell 1 and a sealed door panel 2. The sealed door panel 2 is provided with a handle 19. The handle 19 is protrudingly arranged on the other side of the sealed door panel 2. The purpose of setting the handle 19 is to facilitate the staff to pull the sealed door panel 2, reduce the pulling strength, and thus relieve work pressure.

[0027] See also Figure 1 and Figure 2A low-pressure warning structure 15 is fixedly arranged in the groove on the top of the refrigeration system shell 1, a central control controller 17 and a warning light 18 are fixedly arranged on the top of the low-pressure warning structure 15, and a low-pressure sensor 16 is fixedly arranged on the bottom of the low-pressure warning structure 15. The low-pressure warning structure 15, the low-pressure sensor 16, the central control controller 17 and the warning light 18 are all existing technologies and will not be described in detail. The close cooperation between the components can realize real-time monitoring of whether the refrigeration system is in a low-pressure state, and remind the staff to carry out maintenance in time.

[0028] See also Figure 2 One side of the sealed door panel 2 is fixedly connected to one side of the guide control track 12, the outer wall of the guide control track 12 is slidably connected to the inner wall of the guide slide plate 13, the top of the guide slide plate 13 is fixedly connected to one side of the positioning linkage shaft 14, and the two ends of the positioning linkage shaft 14 are rotatably arranged in the groove on one side of the refrigeration system shell 1. The close cooperation between the guide control track 12, the guide slide plate 13 and the positioning linkage shaft 14 can effectively make the sealed door panel 2 move smoothly, and it is not easy to tilt or detach during the movement.

[0029] See also Figure 2 A linkage positioning module 3 is fixedly arranged on one side of the sealing door panel 2, and one side of the linkage positioning module 3 is rotatably connected to one end of the curved linkage plate 4. The setting of the curved linkage plate 4 can effectively ensure the movement of subsequent components, and it is not easy to cause collision between components, making the overall movement smoother. The other end of the curved linkage plate 4 is fixedly connected to the bottom of the water drop linkage plate 5. The setting of the water drop linkage plate 5 can effectively play a linkage effect, ensure the movement of subsequent components, and provide effective support effect for subsequent components.

[0030] See also Figure 3 One end of the water drop linkage plate 5 is rotatably connected to one side of the first position control support block 6, the other side of the first position control support block 6 is fixedly connected to one end of the tough spring 7, and the other end of the tough spring 7 is fixedly connected to one side of the second position control support block 8. The setting of the tough spring 7 and the elasticity of the tough spring 7 can effectively keep the subsequent components stationary for a long time without being disturbed by external forces.

[0031] See also Figure 3 The middle part of the second positioning support block 8 is rotatably connected to the outer circumferential surface of the first positioning column 9. The first positioning column 9 and the second positioning column 10 are both fixedly arranged on one side of the positioning plate 11. The setting of the first positioning column 9 and the second positioning column 10 can effectively restrict other components, thereby ensuring the stable movement of other components and preventing them from falling off.

[0032] See also Figure 2 and Figure 3The other side of the positioning plate 11 is fixedly connected to one side of the inner wall of the refrigeration system shell 1. The setting of the positioning plate 11 facilitates the staff to assemble components and reduces the working time required for assembly. The middle part of the water drop linkage plate 5 is rotatably connected to the outer circumferential surface of the second positioning column 10.

[0033] Working principle: When a low pressure condition occurs in the refrigeration system, it is detected by the low pressure sensor 16. Under the action of the low pressure early warning structure 15, the warning light 18 lights up and an alarm sounds, reminding the staff to conduct detection, and then the handle 19 is pulled by external force to lift the sealed door panel 2 upward, driving the guide control track 12 to slide in the guide slide plate 13, and the guide slide plate 13 is changed under the action of the positioning linkage shaft 14, so as to ensure the smooth movement of the sealed door panel 2. At the same time, the movement of the sealed door panel 2 will also drive the linkage positioning module 3 to move, so that the curved linkage plate 4 pulls the water drop linkage plate 5 to rotate on the second positioning column 10, so that the first control support block 6 pulls the toughness spring 7 to move, so that the second control support block 8 rotates on the first positioning column 9. At this time, the direction of the toughness spring 7 changes. Under the action of the elasticity of the toughness spring 7 itself, it is ensured that the subsequent components are stable and motionless. At this time, the sealed door panel 2 is in an open state, and the internal components can be easily inspected or replaced, which is convenient for the staff to carry out maintenance.

[0034] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A low pressure protection device for a refrigeration system, comprising a refrigeration system housing (1) and a sealing door panel (2), characterized in that: A linkage positioning module (3) is fixedly provided on one side of the sealing door panel (2); one side of the linkage positioning module (3) is rotatably connected to one end of a curved linkage plate (4); the other end of the curved linkage plate (4) is fixedly connected to the bottom of a water drop linkage plate (5); one end of the water drop linkage plate (5) is rotatably connected to one side of a first position control support block (6); the other side of the first position control support block (6) is fixedly connected to one end of a tough spring (7); and the other end of the tough spring (7) is fixedly connected to one side of a second position control support block (8).

2. The low pressure prevention device for a refrigeration system according to claim 1, characterized in that: The middle portion of the second position control support block (8) is rotatably connected to the outer circumferential surface of the first positioning column (9), and the middle portion of the water drop linkage plate (5) is rotatably connected to the outer circumferential surface of the second positioning column (10).

3. The low pressure prevention device for a refrigeration system according to claim 2, characterized in that: The first positioning column (9) and the second positioning column (10) are both fixedly arranged on one side of the mounting positioning plate (11), and the other side of the mounting positioning plate (11) is fixedly connected to one side of the inner wall of the refrigeration system shell (1).

4. The low pressure prevention device for a refrigeration system according to claim 1, characterized in that: One side of the sealing door panel (2) is fixedly connected to one side of the guide position control track (12), and the outer wall of the guide position control track (12) is slidably connected to the inner wall of the guide slide plate (13).

5. The low pressure prevention device for a refrigeration system according to claim 4, characterized in that: The top of the guide slide plate (13) is fixedly connected to one side of the positioning linkage shaft (14), and both ends of the positioning linkage shaft (14) are rotatably arranged in a groove on one side of the refrigeration system housing (1).

6. The low pressure prevention device for a refrigeration system according to claim 1, characterized in that: A low-pressure warning structure (15) is fixedly arranged in a groove at the top of the refrigeration system housing (1), and a low-pressure sensor (16) is fixedly arranged at the bottom of the low-pressure warning structure (15).

7. The low pressure prevention device for a refrigeration system according to claim 6, characterized in that: A central controller (17) and a warning light (18) are fixedly arranged on the top of the low-voltage early warning structure (15).

8. The low pressure prevention device for a refrigeration system according to claim 1, characterized in that: The sealed door panel (2) is provided with a handle (19), and the handle (19) is protrudingly provided on the other side of the sealed door panel (2).

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