Carbon dioxide refrigerating unit

Abstract

The utility model discloses a carbon dioxide refrigerating unit, which belongs to the technical field of refrigerating equipment, and comprises a refrigerating box, a refrigerating component and a spraying component, the refrigerating component comprises an evaporator arranged in the refrigerating box, and a carbon dioxide storage tank, a compressor, a condenser, a heat regenerator and an expansion valve which are arranged on the outer side of the refrigerating box, the outer side of the condenser is sleeved with a cooling box with one side open. According to the carbon dioxide refrigerating unit, the two water spraying pipes are matched with the water supply assembly to achieve water spraying and cooling of the condenser, the rotating plate is driven to swing in a reciprocating mode through rotation of the circular plate and matching with the shifting rod, then reciprocating swing of one water spraying pipe is achieved, and the two water spraying pipes are driven by the synchronous assembly to synchronously swing in a reciprocating mode to spray water. Compared with an existing device, the problem that the whole condenser is difficult to be completely covered by a single fixed atomizing nozzle is solved, and the refrigerating effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration equipment, and in particular relates to a carbon dioxide refrigeration unit. Background Art

[0002] Some items with a limited shelf life need to be frozen and stored in cold storage. Cold storage is generally cooled by refrigeration units. Carbon dioxide refrigeration units are a commonly used refrigeration unit, but due to the slow heat exchange speed of their condensers, the refrigeration speed is low and the quality of the frozen and stored items cannot be guaranteed.

[0003] Existing technologies, such as those disclosed in Publication No. CN210980416U, describe a rapid-freezing carbon dioxide refrigeration unit comprising a cold storage unit with a carbon dioxide storage tank and compressor located on the right side. While this patent utilizes an atomizing nozzle to cool the condenser, due to the large area of ​​the condenser, a single, fixed atomizing nozzle is unable to fully cover the entire condenser, thus impacting the cooling effect.

[0004] To this end, we propose a carbon dioxide refrigeration unit to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that it is difficult for an atomizing nozzle to completely cover a condenser, and proposes a carbon dioxide refrigeration unit.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A carbon dioxide refrigeration unit includes a refrigeration box, a refrigeration assembly, and a spray assembly. The refrigeration assembly includes an evaporator arranged inside the refrigeration box, and a carbon dioxide storage tank, a compressor, a condenser, a regenerator, and an expansion valve arranged outside the refrigeration box. A cooling box with one side open is sleeved outside the condenser.

[0008] The spray assembly includes two water spray pipes rotatably arranged on the inner side wall of the cooling box, and the two water spray pipes are respectively located on both sides of the condenser and spray water to the condenser. One side of the cooling box is provided with a water supply assembly for supplying water to the water spray pipes, and the other side is fixedly connected to a mounting box. The mounting box is provided with a synchronization assembly on one side close to the water spray pipe for synchronous rotation of the two water spray pipes, and a reciprocating assembly on the other side for driving one of the water spray pipes to swing back and forth;

[0009] The reciprocating assembly includes a long rotating plate fixedly connected to the end of one of the water spray pipes, a sliding groove is provided on the rotating plate, the side wall of the mounting box is rotatably connected to a circular plate, and the side surface of the circular plate is eccentrically fixedly connected to a shift rod extending into the sliding groove.

[0010] Preferably, the synchronization component includes a sprocket fixedly sleeved on the end of the water spray pipe, and a chain for synchronization is sleeved between the two sprockets.

[0011] Preferably, the end of the shift rod is fixedly connected to a limiting block, and the limiting block limits the shift rod between the circular plates.

[0012] Preferably, the two water spray pipes are arranged alternately up and down.

[0013] Preferably, the rotation range of the water spray pipe is 0° to 60°.

[0014] Preferably, a plurality of drainage holes are provided below the installation box.

[0015] In summary, the technical effects and advantages of this utility model are as follows: This CO2 refrigeration unit uses two water spray pipes in conjunction with a water supply assembly to spray water on the condenser for cooling. The circular plate rotates, in conjunction with a lever, to drive the rotating plate back and forth, thereby achieving the reciprocating swing of one of the water spray pipes. The synchronization assembly then drives both water spray pipes to swing back and forth synchronously to spray water. Compared to existing devices, this avoids the problem of a single, fixed atomizing nozzle failing to fully cover the entire condenser, thereby improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the cooling box in the present utility model;

[0018] Figure 3 This is a cross-sectional front view of the utility model;

[0019] Figure 4 This is a cross-sectional structural diagram of the installation box in the present utility model;

[0020] Figure 5 It is a cross-sectional side view of the cooling box in the present invention.

[0021] In the figure: 1. Refrigeration box; 2. Evaporator; 3. Carbon dioxide storage tank; 4. Compressor; 5. Condenser; 6. Regenerator; 7. Expansion valve; 8. Cooling box; 9. Water spray pipe; 10. Water supply assembly; 11. Mounting box; 12. Rotating plate; 13. Sliding groove; 14. Circular plate; 15. Lever; 16. Sprocket; 17. Chain; 18. Limit block; 19. Drain hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Reference Figure 1-3 A carbon dioxide refrigeration unit includes a refrigeration box 1, a refrigeration component and a spray component. The refrigeration component includes an evaporator 2 arranged inside the refrigeration box 1, and a carbon dioxide storage tank 3, a compressor 4, a condenser 5, a regenerator 6 and an expansion valve 7 arranged outside the refrigeration box 1. A cooling box 8 with one side open is provided on the outside of the condenser 5.

[0024] The refrigeration assembly is based on existing technology, and the carbon dioxide storage tank 3, the compressor 4, the condenser 5, the regenerator 6, the expansion valve 7, and the evaporator 2 are connected via connecting pipes.

[0025] The spray assembly includes two water spray pipes 9 rotatably mounted on the inner wall of the cooling box 8. The two water spray pipes 9 are located on either side of the condenser 5 and spray water toward the condenser 5. The sides of the water spray pipes 9 are equipped with multiple atomizing nozzles facing the condenser 5. A water supply assembly 10 is installed on one side of the cooling box 8 to supply water to the water spray pipes 9, and a mounting box 11 is fixedly connected to the other side. Inside the mounting box 11, on one side near the water spray pipes 9, is a synchronization assembly that synchronizes the rotation of the two water spray pipes 9, and on the other side, a reciprocating assembly that drives one of the water spray pipes 9 back and forth.

[0026] The water supply assembly 10 is a prior art, comprising a water tank and a water pump. The water pump is connected to two water spray pipes 9 through a water hose that is divided into two. The water pump pumps water from the water tank to the water spray pipes 9 and sprays it out from the atomizing nozzles on the water spray pipes 9. Figure 5 .

[0027] Reference Figure 3-4 The reciprocating assembly includes a long rotating plate 12 fixedly connected to the end of one of the water spray pipes 9, and a sliding groove 13 is provided on the rotating plate 12. A circular plate 14 is rotatably connected to the side wall of the installation box 11, and a lever 15 extending into the sliding groove 13 is eccentrically fixed to the side of the circular plate 14.

[0028] When the carbon dioxide refrigeration unit is in use, the carbon dioxide storage tank 3 fills the compressor 4 with carbon dioxide, and the carbon dioxide is compressed and then sent to the condenser 5 for cooling. The cooled carbon dioxide then passes through the regenerator 6 and the expansion valve 7 and reaches the evaporator 2. The carbon dioxide in the evaporator 2 takes away the heat of the refrigeration box 1 and then starts the heat cycle again.

[0029] When water spray cooling is required on the condenser 5, the circular plate 14 rotates, driving the lever 15 to rotate. The sliding slot 13 then drives the rotating plate 12 to swing back and forth, causing one of the water spray pipes 9 to swing back and forth. The synchronizing assembly then drives the two water spray pipes 9 to swing back and forth synchronously, and the water supply assembly 10 pumps water into the water spray pipes 9, completing the water spray cooling process on the condenser 5.

[0030] Reference Figure 3-4 The synchronization component includes a sprocket 16 fixedly sleeved on the end of the water spray pipe 9, and a chain 17 for synchronization is sleeved between the two sprockets 16.

[0031] The outer wall of the mounting box 11 should be equipped with a motor (such as Figure 2 shown).

[0032] In order to further improve the heat exchange effect, fans (not shown in the figure) can be provided at the evaporator 2 and the condenser 5 .

[0033] The end of the shift rod 15 is fixedly connected to the limit block 18, and the limit block 18 limits the shift rod 15 between the circular plates 14 and the circular plates 14. In this way, the stability of the device during operation is improved.

[0034] Reference Figure 5 The two water spray pipes 9 are staggered up and down, and the staggered water spray pipes 9 can cover the condenser 5 more comprehensively and evenly.

[0035] Since the atomizing nozzle of the water spray pipe 9 has a certain diffusion capacity, a large swing angle will not significantly improve the coverage rate. Moreover, a large swing angle requires a larger circular plate 14, which is more expensive. Therefore, the rotation range of the water spray pipe 9 is set to 0° to 60°.

[0036] Reference Figure 2 , a plurality of drainage holes 19 are provided below the installation box 11. This prevents the sprayed water from gathering in the installation box 11. A collection box for collecting water can be provided below the drainage holes 19, and the water in the collection box can be returned to the water tank for reuse after filtering (not shown in the figure).

[0037] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A carbon dioxide refrigeration unit, comprising a refrigeration box (1), a refrigeration component and a spray component, characterized in that: The refrigeration assembly comprises an evaporator (2) arranged inside a refrigeration box (1), and a carbon dioxide storage tank (3), a compressor (4), a condenser (5), a regenerator (6), and an expansion valve (7) arranged outside the refrigeration box (1); a cooling box (8) with one side open is provided outside the condenser (5); The spray assembly comprises two water spray pipes (9) rotatably arranged on the inner side wall of the cooling box (8), and the two water spray pipes (9) are respectively located on both sides of the condenser (5) and spray water to the condenser (5); one side of the cooling box (8) is provided with a water supply assembly (10) for supplying water to the water spray pipes (9), and the other side is fixedly connected with a mounting box (11); the mounting box (11) has a synchronizing assembly for synchronizing the rotation of the two water spray pipes (9) on one side close to the water spray pipes (9), and a reciprocating assembly for driving one of the water spray pipes (9) to swing back and forth on the other side; The reciprocating assembly comprises a long strip rotating plate (12) fixedly connected to the end of one of the water spray pipes (9), a sliding groove (13) is provided on the rotating plate (12), a circular plate (14) is rotatably connected to the side wall of the installation box (11), and a shifting rod (15) extending into the sliding groove (13) is eccentrically fixedly connected to the side surface of the circular plate (14).

2. A carbon dioxide refrigeration unit according to claim 1, characterized in that: The synchronization assembly comprises a sprocket (16) fixedly sleeved on the end of the water spray pipe (9), and a chain (17) for synchronization is sleeved between the two sprockets (16).

3. A carbon dioxide refrigeration unit according to claim 1, characterized in that: The end of the shifting rod (15) is fixedly connected to a limiting block (18), and the limiting block (18) limits the shifting rod (15) between the circular plates (14).

4. A carbon dioxide refrigeration unit according to claim 1, characterized in that: The two water spray pipes (9) are arranged in an upper and lower staggered manner.

5. A carbon dioxide refrigeration unit according to claim 4, characterized in that: The water spray pipe (9) has a rotation range of 0° to 60°.

6. The carbon dioxide refrigeration unit according to claim 1, characterized in that: A plurality of drainage holes (19) are provided below the installation box (11).

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