Heat exchange, air supply and enthalpy increase device for refrigerating unit

Abstract

The utility model belongs to the technical field of refrigerating machine equipment units, and particularly relates to a heat exchange air supply enthalpy increasing device for a refrigerating unit, which comprises a fixing frame, an air supply mechanism is fixedly arranged on the inner wall of the fixing frame, and a heat dissipation mechanism is fixedly arranged on the inner surface of the fixing frame. And the air supplementing mechanism comprises an electric control box, a compressor is fixedly installed in an inner cavity of the electric control box, a storage tank is fixedly installed on the inner wall of the electric control box, the outer surface of the compressor communicates with an air inlet pipe, and the top of the compressor communicates with a high-pressure pipe. According to the heat exchange air supply enthalpy increasing device for the refrigerating unit, the drainage pipe is communicated with the communicating pipe through the valve, so that a liquid refrigerant is injected into the storage tank through the drainage pipe, and when the refrigerating unit needs air supply, the communicating pipe is communicated with the air inlet pipe through the valve, so that the liquid refrigerant in the storage tank is supplied into the compressor, and the air supply work is completed; when the condensation grid and the heat dissipation grid need to be subjected to heat dissipation.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigeration equipment unit technical field especially, relates to a heat exchange air supplementing enthalpy increasing device for refrigeration unit. BACKGROUND

[0002] A refrigeration unit is usually composed of a compressor, a condenser, an evaporator, and a throttling valve (or an expansion valve), and these components work together to transfer heat from one area to another to lower or maintain the temperature of the target area, achieve a refrigeration cycle, and thus achieve the effect of refrigeration. Refrigeration units are widely used in commercial, industrial, and household fields, such as air conditioning systems, refrigerators, and freezing equipment. They can provide a comfortable indoor environment, maintain the freshness of food and other items, and play an important role in many industries.

[0003] Enthalpy increase refers to increasing the enthalpy of refrigerant in an air conditioning system. By increasing the enthalpy of refrigerant, it can release more heat in the condenser to cool the air. The realization of enthalpy increase relies on the action of the compressor, which compresses the refrigerant to increase its temperature and pressure, thereby increasing the enthalpy per unit mass. A set of heat exchange system is added after the condenser to separate a portion of the intermediate-pressure gaseous refrigerant and send it to a special compressor with an auxiliary suction port for air supplementing compression. The remaining liquid refrigerant continues to circulate in the original main circuit. By "air supplementing" and "enthalpy increasing", the heating performance of the system is improved. The medium-temperature high-pressure liquid coming out of the condenser takes a portion of the liquid into the branch circuit, which is throttled by the expansion valve to intermediate pressure, and then sent to the economizer to exchange heat with other liquid in the main circuit. The refrigerant liquid in the branch circuit is evaporated by absorbing heat from the main circuit during heat exchange due to its low temperature and pressure after throttling, and then injected into the compressor along the air supplementing branch circuit.

[0004] The enthalpy increasing equipment in the refrigeration unit is usually a jet enthalpy increasing compressor, which utilizes the thermodynamic properties of air to compress and increase the enthalpy of the gas through high-speed air injection and expansion. However, in actual operation, the following problems may exist:

[0005] 1. When air supplementing is performed in the refrigeration unit, a portion of the intermediate-pressure gaseous refrigerant is separated from the refrigeration unit and sent to a special compressor with an auxiliary suction port for air supplementing compression, and the remaining liquid refrigerant continues to circulate in the original main circuit. However, in actual application, it is necessary to ensure the smoothness of the air supplementing channel and the accurate control of the air supplementing amount to avoid negative effects on the system performance.

[0006] 2. The existing heat dissipation equipment in the refrigeration unit is usually located at the top of the unit, with the fan at the top. The refrigeration unit is usually used outdoors, and when it rains, rainwater may enter the heat dissipation unit through the fan, causing water accumulation in the heat dissipation equipment and leading to rust and other problems. Utility model content

[0007] In order to overcome the defects of the prior art pointed out above, the present utility model is researched in depth, and is completed after a lot of creative labor is paid.

[0008] Specifically, the technical problem to be solved by the present utility model is to provide a heat exchange air supplementing enthalpy increasing device for a refrigerating unit, so as to solve the technical problem that the gaseous refrigerant at intermediate pressure needs to be drawn to a transfer compressor for air supplementing at present, and rainwater will enter the heat dissipation unit along the heat dissipation fan due to the fact that the refrigerating unit is usually used in the open air, so that there is water accumulation in the heat dissipation equipment, and problems such as corrosion of the equipment occur.

[0009] In order to solve the above technical problems, the utility model provides the following technical scheme:

[0010] A heat exchange air supplementing enthalpy increasing device for a refrigerating unit, comprising a fixing frame, a gas supplementing mechanism is fixedly installed on the inner wall of the fixing frame, and a heat dissipation mechanism is fixedly installed on the inner surface of the fixing frame.

[0011] The gas supplementing mechanism comprises an electric control box, a compressor is fixedly installed in the inner cavity of the electric control box, a storage tank is fixedly installed on the inner wall of the electric control box, an air inlet pipe is communicated with the outer surface of the compressor, and a high-pressure pipe is communicated with the top of the compressor.

[0012] As an improved technical scheme, the gas supplementing mechanism further comprises a communication pipe, the outer surface of the communication pipe is fixedly connected with the inner surface of the storage tank, a valve is fixedly installed on the outer surface of the communication pipe, the left side of the valve is communicated with the right end of the air inlet pipe, and a drainage pipe is communicated with the right side of the valve.

[0013] As an improved technical scheme, the heat dissipation mechanism comprises a heat dissipation box, the outer surface of the heat dissipation box is fixedly connected with the inner surface of the fixing frame, a condensing grid is fixedly installed on the inner wall of the heat dissipation box, and a heat dissipation grid is arranged on the inner wall of the heat dissipation box and away from the condensing grid.

[0014] As an improved technical scheme, the heat dissipation mechanism further comprises a heat dissipation frame, the outer surface of the heat dissipation frame is fixedly connected with the inner surface of the heat dissipation box, a motor is fixedly installed on the inner surface of the heat dissipation frame, a rotating shaft is fixedly installed on the output end of the motor through a speed reducer, and a heat dissipation blade is fixedly installed on the outer surface of the rotating shaft.

[0015] As an improved technical scheme, the heat dissipation mechanism further comprises a separation guide plate, the bottom of the separation guide plate is fixedly connected with the bottom of the inner cavity of the heat dissipation box.

[0016] As an improved technical scheme, the heat dissipation mechanism further comprises an air inlet tank, and the bottom of the air inlet tank is communicated with the top of the heat dissipation tank.

[0017] After the above technical scheme is adopted, the utility model has the beneficial effects that:

[0018] 1、 the utility model discloses a refrigeration unit's heat exchange air supplementing and enthalpy increasing device, which comprises a heat dissipation tank, a refrigerant storage tank, a refrigerant inlet pipe, a high-pressure pipe, a valve, a storage tank, a communication pipe, a valve and a drainage pipe.

[0019] 2、 the utility model discloses a refrigeration unit's heat dissipation equipment can be isolated rainwater's design, through the cooperation of the fixing frame, the heat dissipation tank and the air inlet tank, the cooperation of the heat dissipation tank, the condensing grid, the heat dissipation grid and the separation guide plate, the heat dissipation equipment originally located at the top is moved to the lower side, so that external air enters the heat dissipation tank through the air inlet tank, rainwater is blocked outside, and the problem of rust caused by rainwater entering the heat dissipation equipment is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0021] Figure 1 It is a whole three-dimensional structure schematic view of the heat exchange air supplementing and enthalpy increasing device for the refrigeration unit of the utility model.

[0022] Figure 2 It is a fixing frame local three-dimensional sectional structure schematic view of the heat exchange air supplementing and enthalpy increasing device for the refrigeration unit of the utility model.

[0023] Figure 3 It is a refrigerant inlet pipe local three-dimensional sectional structure schematic view of the heat exchange air supplementing and enthalpy increasing device for the refrigeration unit of the utility model.

[0024] Figure 4 It is a refrigerant inlet pipe local three-dimensional sectional structure schematic view of the heat exchange air supplementing and enthalpy increasing device for the refrigeration unit of the utility model. Figure 2 It is a fixing frame local three-dimensional sectional structure schematic view of the heat exchange air supplementing and enthalpy increasing device for the refrigeration unit of the utility model.

[0025] EXPLANATION OF REFERENCE NUMERALS:

[0026] 1. Fixing frame; 2. Air supply mechanism; 21. Electrical control box; 22. Compressor; 23. Storage tank; 24. Inlet pipe; 25. High-pressure pipe; 26. Connecting pipe; 27. Valve; 28. Drain pipe; 3. Heat dissipation mechanism; 31. Heat dissipation box; 32. Condensation grid; 33. Heat dissipation grid; 34. Heat dissipation frame; 35. Motor; 36. Rotating shaft; 37. Heat dissipation blades; 38. Separation guide plate; 39. Inlet box. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0030] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0031] like Figure 1 and Figure 3 As shown in the figure, this embodiment provides a heat exchange gas replenishment and enthalpy enhancement device for a refrigeration unit. This heat exchange gas replenishment and enthalpy enhancement device for a refrigeration unit includes a fixed frame 1, a gas replenishment mechanism 2 is fixedly installed on the inner wall of the fixed frame 1, and a heat dissipation mechanism 3 is fixedly installed on the inner surface of the fixed frame 1.

[0032] The air supplementing mechanism 2 comprises an electric control box 21, a compressor 22 is fixedly installed in the inner cavity of the electric control box 21, a storage tank 23 is fixedly installed on the inner wall of the electric control box 21, the outer surface of the compressor 22 is communicated with an air inlet pipe 24, and the top of the compressor 22 is communicated with a high-pressure pipe 25.

[0033] The compressor 22 is electrically connected with an external power supply, and is controlled by an external PLC programming program.

[0034] As Figure 1 and Figure 3 As shown in the accompanying drawings, the air supplementing mechanism 2 further comprises a communication pipe 26, the outer surface of the communication pipe 26 is fixedly connected with the inner surface of the storage tank 23, the outer surface of the communication pipe 26 is fixedly installed with a valve 27, the left side of the valve 27 is communicated with the right end of the air inlet pipe 24, and the right side of the valve 27 is communicated with a drainage pipe 28.

[0035] As Figure 2 and Figure 4 As shown in the accompanying drawings, the heat dissipation mechanism 3 comprises a heat dissipation box 31, the outer surface of the heat dissipation box 31 is fixedly connected with the inner surface of the fixed frame 1, the inner wall of the heat dissipation box 31 is fixedly installed with a condensing grid 32, and the inner wall of the heat dissipation box 31 and away from the condensing grid 32 is provided with a heat dissipation grid 33.

[0036] As Figure 2 and Figure 4 As shown in the accompanying drawings, the heat dissipation mechanism 3 further comprises a heat dissipation frame 34, the outer surface of the heat dissipation frame 34 is fixedly connected with the inner surface of the heat dissipation box 31, the inner surface of the heat dissipation frame 34 is fixedly installed with a motor 35, the output end of the motor 35 is fixedly installed with a rotating shaft 36 through a speed reducer, and the outer surface of the rotating shaft 36 is fixedly installed with a heat dissipation blade 37.

[0037] The motor 35 is electrically connected with an external power supply, and is controlled by an external PLC programming program.

[0038] As Figure 2 and Figure 4 As shown in the accompanying drawings, the heat dissipation mechanism 3 further comprises a separation guide plate 38, and the bottom of the separation guide plate 38 is fixedly connected with the bottom of the inner cavity of the heat dissipation box 31.

[0039] As Figure 2 and Figure 4 As shown in the accompanying drawings, the heat dissipation mechanism 3 further comprises an air inlet box 39, and the bottom of the air inlet box 39 is communicated with the top of the heat dissipation box 31.

[0040] In use, the refrigerant is sucked into and compressed by the compressor 22, and its temperature and pressure are raised. Under the action of the compressor 22, the refrigerant is changed from a low-temperature and low-pressure gaseous state at the outlet of the evaporator to a high-temperature and high-pressure gaseous state, and is discharged from the high-pressure pipe 25 of the compressor 22. The high-temperature and high-pressure refrigerant gas discharged from the high-pressure pipe 25 of the compressor 22 enters the condenser, and a large amount of heat of the refrigerant is taken away by the air flowing through the condenser by the action of the condenser fan. The refrigerant is condensed from a gas to a liquid, and its pressure and temperature are greatly reduced. When the high-pressure liquid refrigerant passes through the expansion valve (or throttling device), its pressure and temperature are sharply reduced, and part of the refrigerant evaporates in the form of mist (fine droplets) into the evaporator. The mist-shaped refrigerant absorbs heat in the evaporator and completely evaporates into a gas, while lowering the temperature of the surrounding environment. The low-temperature and low-pressure refrigerant gas after evaporation is sucked into the compressor 22 to start the next working cycle. When the refrigerant is condensed from a gas to a liquid, the valve 27 connects the drain pipe 28 with the communication pipe 26, so that the liquid refrigerant is injected into the storage tank 23 through the drain pipe 28. When the refrigeration unit needs to be recharged, the valve 27 connects the communication pipe 26 with the gas inlet pipe 24, so that the liquid refrigerant in the storage tank 23 is gasified and then supplemented into the compressor 22 to complete the recharging work. When the condensing grid 32 and the heat dissipation grid 33 need to be cooled, the motor 35 in the heat dissipation box 31 drives the heat dissipation blades 37 to rotate through the rotating shaft 36, external air is sucked into the air inlet box 39, and then enters the heat dissipation box 31. Then, through the cooperation of the separation guide plate 38, the air is cooled on the condensing grid 32 and the heat dissipation grid 33, respectively.

[0041] It should be understood that the use of these embodiments is only for the purpose of illustrating the present application and is not intended to limit the scope of protection of the present application. In addition, it should also be understood that after reading the technical content of the present application, those skilled in the art can make various modifications, modifications and / or deformations to the present application, and all these equivalent forms also fall within the protection scope defined by the claims attached to the present application.

Claims

1. A heat exchange and gas supplementing and enthalpy increasing device for refrigerating unit, comprising a fixing frame (1), characterized in that: The inner wall of the fixing frame (1) is fixedly installed with a gas supplement mechanism (2), and the inner surface of the fixing frame (1) is fixedly installed with a heat dissipation mechanism (3); The gas supplement mechanism (2) comprises an electric control box (21), the inner cavity of the electric control box (21) is fixedly installed with a compressor (22), the inner wall of the electric control box (21) is fixedly installed with a storage tank (23), the outer surface of the compressor (22) is communicated with an air inlet pipe (24), and the top of the compressor (22) is communicated with a high-pressure pipe (25).

2. The heat exchange gas supplementing and enthalpy increasing device for refrigerating unit according to claim 1, characterized in that: The gas supplement mechanism (2) further comprises a communication pipe (26), the outer surface of the communication pipe (26) is fixedly connected with the inner surface of the storage tank (23), the outer surface of the communication pipe (26) is fixedly installed with a valve (27), the left side of the valve (27) is communicated with the right end of the air inlet pipe (24), and the right side of the valve (27) is communicated with a drainage pipe (28).

3. The heat exchange gas supplementing and enthalpy increasing device for refrigerating unit according to claim 1, characterized in that: The heat dissipation mechanism (3) comprises a heat dissipation box (31), the outer surface of the heat dissipation box (31) is fixedly connected with the inner surface of the fixing frame (1), the inner wall of the heat dissipation box (31) is fixedly installed with a condensing grid (32), and the inner wall of the heat dissipation box (31) and away from the condensing grid (32) is provided with a heat dissipation grid (33).

4. The heat exchange gas supplementing and enthalpy increasing device for refrigerating unit according to claim 1, characterized in that: The heat dissipation mechanism (3) further comprises a heat dissipation frame (34), the outer surface of the heat dissipation frame (34) is fixedly connected with the inner surface of the heat dissipation box (31), the inner surface of the heat dissipation frame (34) is fixedly installed with a motor (35), the output end of the motor (35) is fixedly installed with a rotating shaft (36) through a speed reducer, and the outer surface of the rotating shaft (36) is fixedly installed with a heat dissipation blade (37).

5. The heat exchange gas supplementing and enthalpy increasing device for refrigerating unit according to claim 1, characterized in that: The heat dissipation mechanism (3) further comprises a separation guide plate (38), and the bottom of the separation guide plate (38) is fixedly connected with the bottom of the inner cavity of the heat dissipation box (31).

6. The heat exchange gas supplementing and enthalpy increasing device for refrigerating unit according to claim 1, characterized in that: The heat dissipation mechanism (3) further comprises an air inlet box (39), and the bottom of the air inlet box (39) is communicated with the top of the heat dissipation box (31).

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