Variable frequency two-stage compression refrigeration device

Abstract

The utility model discloses a variable frequency two-stage compression refrigeration device, including main body, the recess is provided with in the upper and lower position of the front end of main body, the inner side position of recess installs the fender, the front end of fender is provided with the clamping groove in the upper and lower position, the inner side position of main body is provided with the sliding block, when installing fender, fender is aimed at recess and makes it insert into recess, when inserting into recess, the connecting rod is pulled to the outside, makes the insertion board enter the internal position of main body, the pulling of handle pushes the sliding block and does not cause the extrusion of stainless steel spring, at this moment can insert fender into the internal position of recess, and the connecting rod is loosened and makes stainless steel spring release elastic force, and the insertion board is inserted into the internal position of fender clamping groove, thereby accomplishing the installation of fender, and this connecting mode can dismantle fender at any time, and the complicated step is saved.

Description

Technical Field

[0001] This utility model belongs to the technical field of variable frequency two-stage compression refrigeration devices, specifically relating to a variable frequency two-stage compression refrigeration device. Background Technology

[0002] The variable frequency two-stage compression refrigeration unit is a refrigeration device that combines variable frequency technology with the principle of two-stage compression. Its core is to compress the refrigerant in stages through the compressor. First, the low-pressure refrigerant vapor is compressed to an intermediate pressure, then cooled in the middle and compressed to the condensing pressure. This reduces the pressure ratio of single-stage compression and improves refrigeration efficiency. At the same time, the variable frequency technology is used to adjust the operating frequency of the compressor to achieve precise control of the refrigeration capacity. It can adapt to different load requirements to achieve energy saving, and maintain stable refrigeration performance in low-temperature environments. It is widely used in cold storage, low-temperature laboratories and other scenarios with high requirements for refrigeration efficiency and temperature control.

[0003] When using a variable frequency two-stage compression refrigeration unit, the traditional protective plate is installed to the main body with bolts. In addition, when disassembling, the outer shell at the front end must be removed first before the bolts can be removed, thus completing the disassembly of the protective plate. This connection method takes too much time during disassembly and installation. Utility Model Content

[0004] The purpose of this utility model is to provide a variable frequency two-stage compression refrigeration device to solve the problem that, in the use of the variable frequency two-stage compression refrigeration device mentioned in the background art, the traditional protective plate is installed to the main body by bolts, and the outer shell at the front end must be removed before the bolts can be removed to complete the removal of the protective plate. This connection method takes too much time during disassembly and installation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a variable frequency two-stage compression refrigeration device, comprising a main body, a groove provided at the upper and lower positions of the front end of the main body, a protective plate installed on the inner side of the groove, a slot provided at the upper and lower positions of the front end of the protective plate, a slider provided on the inner side of the main body, an insertion plate fixed at the front end of the slider, a stainless steel spring fixed at the rear end of the slider, a handle fixed at the upper end of the slider, a connecting rod fixed at the upper end of the handle, a base plate fixed at the left and right sides of the lower end of the main body, an mounting plate installed at the lower end of the base plate, a rotating shaft provided at the left side of the upper end of the mounting plate, the rotating shaft sleeved inside the base plate, multiple threaded holes distributed at the upper end of the rotating shaft, and a stainless steel bolt inserted into the upper end of the base plate, the stainless steel bolt being able to enter the internal position of the threaded holes.

[0006] Preferably, a fan is provided inside the main body at the upper and lower positions, and a condenser fin is provided inside the main body at the rear position.

[0007] Preferably, a pressure gauge is provided at the upper position on the right end of the main body. There are two pressure gauges, which are used to display the high pressure and the low pressure respectively.

[0008] Preferably, an air intake port and a liquid supply port are provided at the lower right end of the main body, and a compressor is provided inside the main body.

[0009] Preferably, the upper end of the mounting plate is provided with a through hole at the right position, and the mounting plate can rotate about the rotation axis at the inner position of the base plate.

[0010] Preferably, the stainless steel bolt is inserted from the upper end of the base plate and can enter the interior of the threaded hole, so that the mounting plate cannot be rotated.

[0011] Preferably, the rear end of the connecting rod is fixed with handles on the left and right sides, and the connecting rod controls the two handles to move simultaneously.

[0012] Preferably, the slider utilizes the elastic force of a stainless steel spring to allow the insertion plate to be inserted into the inner position of the slot.

[0013] Compared with the prior art, this utility model provides a variable frequency two-stage compression refrigeration device, which has the following beneficial effects: 1. When installing the protective plate, align the protective plate with the groove and insert it into the groove. When inserting it into the groove, pull the connecting rod outward to allow the insertion plate to enter the internal position of the main body. Pulling the handle pushes the slider to compress the stainless steel spring. At this time, the protective plate can be inserted into the internal position of the groove. Release the connecting rod to allow the stainless steel spring to release its elastic force, and insert the insertion plate into the internal position of the protective plate slot, thus completing the installation of the protective plate. This connection method allows the protective plate to be disassembled at any time, saving cumbersome steps.

[0014] 2. The mounting plate is located on the inner side of the base plate and can rotate around the rotating shaft. This makes it easy to find a suitable installation position for the mounting plate through the round hole on the inner side. The stainless steel bolt at the top of the base plate is inserted into the threaded hole at the upper end of the rotating shaft to fix the mounting plate at the desired angle. This increases the flexibility of the mounting plate in use. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the structure of a variable frequency two-stage compression refrigeration device according to the present invention.

[0016] Figure 2 This is a schematic diagram of the mounting plate structure of a variable frequency two-stage compression refrigeration device according to the present invention.

[0017] Figure 3 This is a schematic diagram of the split structure of a variable frequency two-stage compression refrigeration device according to the present invention.

[0018] Figure 4 This is a cross-sectional structural diagram of a variable frequency two-stage compression refrigeration device according to the present invention.

[0019] In the diagram: 1. Main body; 2. Slider; 3. Handle; 4. Connecting rod; 5. Protective plate; 6. Stainless steel bolt; 7. Through round hole; 8. Mounting plate; 9. Base plate; 10. Condenser; 11. Insertion plate; 12. Rotating shaft; 13. Threaded hole; 14. Slot; 15. Fan; 16. Pressure gauge; 17. Suction port; 18. Liquid supply port; 19. Stainless steel spring; 20. Groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The utility model provides, for example Figure 1-4 The variable frequency two-stage compression refrigeration device shown includes a main body 1. Grooves 20 are provided at the upper and lower positions of the front end of the main body 1. A protective plate 5 is installed inside the grooves 20. A slot 14 is provided at the upper and lower positions of the front end of the protective plate 5. A slider 2 is provided inside the main body 1. An insertion plate 11 is fixed at the front end of the slider 2. A stainless steel spring 19 is fixed at the rear end of the slider 2. A handle 3 is fixed at the upper end of the slider 2. A connecting rod 4 is fixed at the upper end of the handle 3. A base plate 9 is fixed at the lower end of the main body 1 on both sides. An mounting plate 8 is installed at the lower end of the base plate 9. A rotating shaft 12 is provided at the upper end of the mounting plate 8 on the left side. The rotating shaft 12 is sleeved inside the base plate 9. Multiple threaded holes 13 are distributed at the upper end of the rotating shaft 12. A stainless steel bolt 6 is inserted into the upper end of the base plate 9, and the stainless steel bolt 6 can enter the internal position of the threaded holes 13.

[0023] Low-temperature, low-pressure refrigerant vapor enters the low-pressure stage compressor through suction port 17. After initial compression, it forms medium-temperature, medium-pressure vapor, which then enters the high-pressure stage compressor for further compression into high-temperature, high-pressure vapor. When the high-temperature vapor discharged from the high-pressure stage compressor flows through the condenser 10, it exchanges heat with the outside air, releases heat, and condenses into high-pressure liquid refrigerant. The liquid refrigerant enters the subsequent throttling device through liquid supply port 18, where it is depressurized and converted back into a low-temperature, low-pressure gas-liquid mixture. It absorbs heat from the cooled space and evaporates into vapor, finally re-entering the low-pressure stage compressor through suction port 17 to complete one refrigeration cycle. Throughout the process, the two-stage compression structure reduces the single-stage compression load by increasing the refrigerant pressure in stages, while the variable frequency characteristic adapts to different refrigeration needs by adjusting the compressor operating speed.

[0024] like Figure 1 and Figure 2 As shown, a fan 15 is installed inside the main body 1 at the top and bottom positions. A condenser fin 10 is installed inside the main body 1 at the rear position. A pressure gauge 16 is installed at the top right end of the main body 1. There are two pressure gauges 16, which are used to display high pressure and low pressure respectively. A circular hole 7 is provided at the upper right position of the mounting plate 8. The mounting plate 8 can rotate around the rotating shaft 12 at the inner position of the base plate 9. The stainless steel bolt 6 is inserted from the upper position of the base plate 9 and can enter the internal position of the threaded hole 13, so that the mounting plate 8 cannot rotate.

[0025] The mounting plate 8 is located on the inner side of the base plate 9 and can rotate around the rotating shaft 12. This allows the mounting plate 8 to find a suitable installation position through the round hole 7 on the inner side, and the stainless steel bolt 6 at the top of the base plate 9 can be inserted into the threaded hole 13 at the upper end of the rotating shaft 12 to fix the mounting plate 8 at the desired angle.

[0026] like Figure 3 and Figure 4 As shown, an air intake port 17 and a liquid supply port 18 are provided at the lower right end of the main body 1. A compressor is provided inside the main body 1. The rear end of the connecting rod 4 is fixed with handles 3 on the left and right sides. The connecting rod 4 controls the two handles 3 to move simultaneously. The slider 2, through the elastic force of the stainless steel spring 19, allows the insertion plate 11 to be inserted into the inside of the slot 14.

[0027] Align the protective plate 5 with the groove 20 and insert it into the groove 20. When it is inserted into the groove 20, pull the connecting rod 4 outward so that the insertion plate 11 enters the internal position of the main body 1. Pulling the handle 3 pushes the slider 2 to compress the stainless steel spring 19. At this time, the protective plate 5 can be inserted into the internal position of the groove 20. Release the connecting rod 4 so that the stainless steel spring 19 releases its elastic force and inserts the insertion plate 11 into the internal position of the protective plate 5 slot 14, thereby completing the installation of the protective plate 5.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A variable frequency two-stage compression refrigeration apparatus, characterized by comprising: The system includes a main body (1), with a groove (20) at the upper and lower front ends of the main body (1), a protective plate (5) installed inside the groove (20), a slot (14) at the upper and lower front ends of the protective plate (5), a slider (2) at the inner side of the main body (1), an insertion plate (11) fixed at the front end of the slider (2), a stainless steel spring (19) fixed at the rear end of the slider (2), a handle (3) fixed at the upper end of the slider (2), and a [missing information] fixed at the upper end of the handle (3). The connecting rod (4) has a base plate (9) fixed at the lower end of the main body (1) on the left and right sides. An mounting plate (8) is installed at the lower end of the base plate (9). A rotating shaft (12) is provided at the upper end of the mounting plate (8) on the left side. The rotating shaft (12) is sleeved inside the base plate (9). Multiple threaded holes (13) are distributed at the upper end of the rotating shaft (12). A stainless steel bolt (6) is inserted into the upper end of the base plate (9). The stainless steel bolt (6) can enter the inside of the threaded hole (13).

2. A variable frequency two-stage compression refrigeration apparatus according to claim 1, characterized in that: The main body (1) has a fan (15) located at the top and bottom, and a condenser fin (10) located at the rear.

3. The variable frequency two-stage compression refrigeration device according to claim 1, characterized in that: A pressure gauge (16) is provided at the upper position on the right end of the main body (1). There are two pressure gauges (16), which are used to display the high pressure and the low pressure respectively.

4. The variable frequency two-stage compression refrigeration device according to claim 1, characterized in that: An air intake port (17) and a liquid supply port (18) are provided at the lower right end of the main body (1), and a compressor is provided inside the main body (1).

5. The variable frequency two-stage compression refrigeration device according to claim 1, characterized in that: The upper end of the mounting plate (8) is provided with a through hole (7) at the right position. The mounting plate (8) can rotate about the rotating shaft (12) at the inner position of the base plate (9).

6. The variable frequency two-stage compression refrigeration device according to claim 5, characterized in that: The stainless steel bolt (6) is inserted from the upper end of the base plate (9) and can enter the internal position of the threaded hole (13), so that the mounting plate (8) cannot be rotated.

7. The variable frequency two-stage compression refrigeration device according to claim 1, characterized in that: The rear end of the connecting rod (4) is fixed with handles (3) on the left and right sides, and the connecting rod (4) controls the two handles (3) to move simultaneously.

8. The variable frequency two-stage compression refrigeration device according to claim 1, characterized in that: The slider (2) allows the insertion plate (11) to be inserted into the slot (14) by the elastic force of the stainless steel spring (19).

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