Circulating refrigerating unit

Abstract

The utility model discloses a circulating refrigerating unit, and relates to the technical field of refrigeration. A mounting plate; a condenser; a fan; a refrigeration system; specifically, the refrigerating system comprises a compressor, a gas-liquid separation tank, a flash tank, a four-way connecting structure and a double-electronic expansion valve connecting structure. The condenser and the refrigerating system are integrally connected through the four-way valve connecting structure and the double-electronic-expansion-valve connecting structure, so that the cooling unit is compact in overall structure, connecting pipelines between all the components are clear, and the components can be conveniently assembled into a complete refrigerating unit. The defect that in the prior art, a refrigerating system is complex in pipeline structure, and consequently installation and maintenance are not convenient is effectively overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to a circulating refrigeration unit. Background Art

[0002] Generally, a refrigeration system is assembled with components such as a compressor, a condenser, an evaporator, etc. Heat is transferred from one place to another through the circulating refrigerant to achieve a cooling effect. The working principle of the refrigeration cycle system is based on the cyclic process of compression, cooling, expansion, and evaporation of a substance to achieve temperature control and regulation.

[0003] Currently, although the existing refrigeration system realizes refrigeration by setting various structures, in the prior art, since its structures are all non-standard customized devices, the installation of its internal structure and pipelines is complex and the area is too large, which is not convenient for installation and maintenance. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the defect that the pipeline structure of the refrigeration system in the prior art is complex and not convenient for installation and maintenance, and to propose a circulating refrigeration unit.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A circulating refrigeration unit, comprising: a mounting frame;

[0007] A mounting plate, the mounting plate is arranged at the inner bottom of the mounting frame, and a mounting rack and a mounting groove are respectively arranged on one side of the mounting plate. The mounting rack and the mounting groove on the mounting plate are used for mounting the internal structure located inside the mounting frame;

[0008] A condenser, a heat dissipation copper row is arranged inside the condenser, and a plurality of copper pipe interfaces are arranged on the outside of one side of the condenser where the heat dissipation copper row extends. The condenser is arranged on one side of the mounting plate, and the opening of the condenser faces the mounting rack;

[0009] A fan, one fan is symmetrically arranged at the top of the mounting frame, and the fan is located above the condenser. The fan is connected to the inside of the mounting frame;

[0010] A refrigeration system, the refrigeration system is arranged inside the mounting frame, the refrigeration system is arranged on the other side of the mounting plate, one end of the refrigeration system is connected to a plurality of copper pipe interfaces of the condenser, and the other end of the refrigeration system is connected to the outside of the mounting frame;

[0011] Specifically, the refrigeration system includes: a compressor, a gas-liquid separation tank, a flash tank, a four-way connection structure, and a dual electronic expansion valve connection structure;

[0012] The gas-liquid separation tank is arranged in parallel with the flash tank and the compressor on the mounting plate through the mounting groove, and is located on one side of the condenser;

[0013] The four-way connection structure is arranged above the flash tank, and the compressor is connected to the condenser, the gas-liquid separation tank and the flash tank respectively through the four-way connection structure;

[0014] The double electronic expansion valve connection structure is arranged on the mounting plate through the mounting frame. The double electronic expansion valve connection structure is located above the flash tank. The flash tank is connected to the condenser through the double electronic expansion valve connection structure, and the other end of the flash tank is connected to the outside of the mounting frame.

[0015] In a feasible embodiment, the condenser is in a C-shaped structure, and the gas-liquid separation tank, the flash tank, and the compressor are arranged in parallel along the C-shaped opening of the condenser.

[0016] In a feasible embodiment, the area ratio of the condenser in the mounting frame is greater than the area ratio of the refrigeration system in the mounting frame.

[0017] In a feasible embodiment, the double electronic expansion valve connection structure includes:

[0018] A first expansion valve, which is arranged on one side of the top of the flash tank, and one end of the first expansion valve is communicated with the inside of the flash tank;

[0019] A drying filter, which is arranged on the mounting frame. One end of the drying filter is connected to the first expansion valve through a first connecting pipe, and the other end of the drying filter is connected to the condenser through a second connecting pipe;

[0020] A second expansion valve, which is arranged on the other side of the top of the flash tank. One end of the second expansion valve is communicated with the inside of the flash tank, and the other end of the second expansion valve is communicated with the outside of the mounting frame;

[0021] A copper filter, which is arranged on one side of the second expansion valve. One end of the copper filter is connected to the other end of the second expansion valve, and the other end of the copper filter is connected to the external liquid inlet.

[0022] In a feasible embodiment, a first ball valve is arranged on the other end of the copper filter.

[0023] In a feasible embodiment, the four-way connection structure includes:

[0024] Four-way valve, the four-way valve is arranged above the flash tank, and a first connection port, a second connection port, a third connection port and a fourth connection port are arranged on the four-way valve;

[0025] Among them, the first connection port is located on the side of the four-way valve close to the compressor, and the second connection port, the third connection port and the fourth connection port are parallelly located on the other side of the four-way valve close to the gas-liquid separation tank;

[0026] Third connecting pipe, one end of the third connecting pipe is connected to the four-way valve through the first connection port, and the other end of the third connecting pipe is connected to the compressor;

[0027] Fourth connecting pipe, one end of the fourth connecting pipe is connected to the second connection port of the four-way valve, and the other end of the fourth connecting pipe is connected to the heat dissipation copper row in the condenser;

[0028] Fifth connecting pipe, one end of the fifth connecting pipe is connected to the third connection port of the four-way valve, and the other end of the fifth connecting pipe is connected to the gas-liquid separation tank;

[0029] Sixth connecting pipe, one end of the sixth connecting pipe is arranged at the fourth connection port of the four-way valve, and a second ball valve is also arranged at the other end of the sixth connecting pipe, and the second ball valve is used to connect the liquid inlet pipe and the liquid return pipe of the cooling system.

[0030] In a feasible embodiment, a first sensor is also arranged on the third connecting pipe.

[0031] In a feasible embodiment, a second sensor is also arranged on the fifth connecting pipe.

[0032] The beneficial effects of the present utility model are:

[0033] By connecting the condenser and the refrigeration system as a whole through the four-way valve connection structure and the double electronic expansion valve connection structure, the overall structure of the present cooling unit is compact, the connection pipelines between each component are clear, and it is convenient to assemble it into a complete refrigeration unit. That is, it effectively solves the disadvantage that the pipeline structure of the refrigeration system in the prior art is complex and not convenient for installation and maintenance. Description of the drawings

[0034] Figure 1 It is a schematic structural diagram of a circulating refrigeration unit provided in an embodiment of the present utility model;

[0035] Figure 2 It is a schematic structural diagram of a condenser in a circulating refrigeration unit provided in an embodiment of the present utility model;

[0036] Figure 3This is a schematic structural diagram of a refrigeration system in a circulation refrigeration unit provided in an embodiment of the present utility model.

[0037] The markings in the figure are shown as follows:

[0038] 1. Installation frame; 11. Installation plate; 111. Installation groove; 112. Installation rack;

[0039] 2. Condenser;

[0040] 3. Gas-liquid separator;

[0041] 4. Flash tank; 41. Drying filter; 411. First connecting pipe; 412. First expansion valve; 413. Second connecting pipe; 42. Second expansion valve; 421. Copper filter; 422. First ball valve;

[0042] 5. Compressor; 51. Four-way valve; 511. Third connecting pipe; 5111. First sensor; 512. Fourth connecting pipe; 513. Fifth connecting pipe; 5131. Second sensor; 514. Sixth connecting pipe; 5141. Second ball valve;

[0043] 6. Fan. Detailed implementation manners

[0044] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0045] It should be noted that all directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0046] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0047] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, such descriptions of "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0048] Embodiment

[0049] Refer to Figures 1 to 3, in order to solve the drawback in the prior art that the pipeline structure of the refrigeration system is complex and inconvenient for installation and maintenance, the present utility model provides a circulating refrigeration unit, which includes: an installation frame 1, an installation plate 11, a fan 6, a condenser 2 and a refrigeration system. The installation frame 1 is in a square frame structure, and a door panel (not marked in the figure) is arranged outside the installation frame 1. The door panel is used to enclose the outside of the installation frame 1 to protect the structure located inside the installation frame 1. The installation plate 11 is arranged at the inner bottom of the installation frame 1. An installation rack 112 and an installation groove 111 are respectively arranged on one side of the installation plate 11. The installation rack 112 and the installation groove 111 on the installation plate 11 are used to install the structure located inside the installation frame 1. The condenser 2 is in a C-shaped structure, and a heat dissipation copper row (not visible in the figure) is arranged inside the condenser 2. A plurality of copper pipe interfaces (not visible in the figure) are arranged on the outside of one side of the condenser 2 where the heat dissipation copper row extends. The condenser 2 is arranged on one side of the installation plate 11, and the opening of the condenser 2 faces the installation rack 112. That is, the condenser 2 is located on one side of the refrigeration system. One fan 6 is symmetrically arranged at the top of the installation frame 1, and one fan 6 is located above the C-shaped opening of the condenser 2. One fan 6 is communicated with the inside of the installation frame 1 to realize quickly dissipating the heat generated by the condenser 2 and other structures inside the installation frame 1 by using the fan 6, and to ensure the refrigeration and heat dissipation cycle of the whole structure. The refrigeration system is arranged inside the installation frame 1. The refrigeration system is arranged on the other side of the installation plate 11. One end of the refrigeration system is connected to a plurality of copper pipe interfaces of the condenser 2, and the other end of the refrigeration system is connected to the outside of the installation frame 1 to facilitate discharging the cooled liquid. Specifically, the refrigeration system includes: a compressor 5, a gas-liquid separation tank, a flash tank 4, a four-way connection structure and a double electronic expansion valve connection structure. The gas-liquid separation tank can be sequentially arranged on the installation plate 11 through the installation groove 111 with the flash tank 4 and the compressor 5, and is located at the C-shaped opening of the condenser 2. The gas-liquid separation tank, the flash tank 4 and the compressor 5 are arranged in parallel along the C-shaped opening of the condenser 2. The four-way connection structure is arranged above the flash tank 4. The compressor 5 is respectively connected to the condenser 2, the gas-liquid separation tank and the flash tank 4 through the four-way connection structure. The double electronic expansion valve connection structure is arranged on the installation plate 11 through the installation rack 112. The double electronic expansion valve connection structure is located above the flash tank 4. The flash tank 4 is connected to the condenser 2 through the double electronic expansion valve connection structure, and the other end of the flash tank 4 is connected to the outside of the installation frame 1.To enable the flash tank 4 to evaporate the low-pressure and low-temperature cooling liquid into a low-temperature and low-pressure gas and input it into the condenser 2 for heat absorption. Then, through the four-way connection structure, the compressor 5 raises the low-temperature and low-pressure gaseous refrigerant to a high-temperature and high-pressure gas and inputs it into the condenser 2 for heat release. The liquid formed after heat release or the low-temperature and low-pressure gas evaporated in the flash tank 4 is sent into the gas-liquid separation tank for gas-liquid separation to effectively achieve a refrigeration cycle. In this embodiment, the overall structure of this cooling unit is compact, and the connecting pipelines between various components are clear, facilitating the assembly of a complete refrigeration unit. That is, it effectively solves the drawback in the prior art that the pipeline structure of the refrigeration system is complex and inconvenient for installation and maintenance.

[0050] In an optional embodiment, the area ratio of the condenser 2 within the installation frame 1 is greater than the area ratio of the refrigeration system within the installation frame 1. Preferably, the area ratio of the condenser 2 to the area ratio of the refrigeration system is 2:1.

[0051] In this embodiment, the double electronic expansion valve connection structure includes: a first expansion valve 412, a second expansion valve 42, a dryer filter 41, and a copper filter 421. The first expansion valve 412 is arranged on one side of the top of the flash tank 4. One end of the first expansion valve 412 is communicated with the inside of the flash tank 4, and the first expansion valve 412 is used to control the throttling of the cooling liquid or gas inside the flash tank 4. The dryer filter 41 is arranged on the mounting frame 112. One end of the dryer filter 41 is connected to the first expansion valve 412 through a first connecting pipe 411, and the other end of the dryer filter 41 is connected to the condenser 2 through a second connecting pipe 413, so as to enable the gas in the flash tank 4 to pass through the dryer filter 41 for gas-liquid separation, ensure the purity of the internal cooling gas entering the condenser 2, remove the residual moisture in the refrigeration system, prevent ice blockage, and reduce the corrosion effect of moisture on the refrigeration system; at the same time, filter out the impurities in the refrigeration system. The second expansion valve 42 is arranged on the other side of the top of the flash tank 4. One end of the second expansion valve 42 is communicated with the inside of the flash tank 4, and the other end of the second expansion valve 42 is communicated with the outside of the mounting frame 1. The second expansion valve 42 is used to cooperate with the first expansion valve 412 to control the throttling of the cooling liquid or gas inside the flash tank 4. The copper filter 421 is arranged on one side of the second expansion valve 42. One end of the copper filter 421 is connected to the other end of the second expansion valve 42, and the other end of the copper filter 421 is connected to the external liquid inlet, so as to ensure the supplement and input of the coolant, and at the same time, the copper filter 421 can also filter the cooling liquid of the entire refrigeration system. In a preferred embodiment, in order to further control the liquid flow rate passing through the second expansion valve 42 in the refrigeration system, a first ball valve 422 is arranged on the other end of the copper filter 421, and the first ball valve 422 is used to cooperate with the second copper filter 421 to control the gas or liquid flow rate in the second expansion valve 42.

[0052] In this embodiment, the four-way connection structure includes: a four-way valve 51, a third connection pipe 511, a fourth connection pipe 512, a fifth connection pipe 513, a sixth connection pipe 514, and a second ball valve 5141. The four-way valve 51 is disposed above the flash tank 4. The four-way valve 51 has four connection ports, that is, the four-way valve 51 has a first connection port, a second connection port, a third connection port, and a fourth connection port. Among them, the first connection port is located on the side of the four-way valve 51 close to the compressor 5, and the second connection port, the third connection port, and the fourth connection port are parallel and located on the other side of the four-way valve 51 close to the gas-liquid separation tank. One end of the third connection pipe 511 is connected to the four-way valve 51 through the first connection port, and the other end of the third connection pipe 511 is connected to the compressor. One end of the fourth connection pipe 512 is connected to the second connection port of the four-way valve 51, and the other end of the fourth connection pipe 512 is connected to the heat dissipation copper row in the condenser 2. One end of the fifth connection pipe 513 is connected to the third connection port of the four-way valve 51, and the other end of the fifth connection pipe 513 is connected to the gas-liquid separation tank. One end of the sixth connection pipe 514 is disposed at the fourth connection port of the four-way valve 51, and a second ball valve 5141 is further provided at the other end of the sixth connection pipe 514. The second ball valve 5141 is used to connect the liquid inlet pipe and the liquid return pipe of the cooling system to ensure the normal operation of the cooling system cycle. That is, in this embodiment, the flash tank 4 evaporates the cooling liquid into a low-temperature and low-pressure gas, which is transmitted to the compressor 5 through the gas-liquid separator 3 for compression into a high-temperature and high-pressure gas for circulation to ensure that the overall structure can achieve refrigeration. That is, in this embodiment, the compressor 5, the gas-liquid separator 3, and the condenser 2 are integrally connected through the four-way valve 51, the third connection pipe 511, the fourth connection pipe 512, the fifth connection pipe 513, and the sixth connection pipe 514, and then the flash tank 4 performs a refrigeration cycle with the compressor 5 and the gas-liquid separator 3 through the condenser 2.

[0053] In this embodiment, in order to better monitor the internal strength in the compressor 5, a high-pressure sensor is provided on the top of the compressor 5. In addition, in order to monitor the air pressure in the third connection pipe 511, a first sensor 5111 is further provided on the third connection pipe 511 to collect the refrigerant gas pressure signal by determining the data in the third connection pipe 511 and convert it into an electrical signal for transmission. Similarly, a second sensor 5131 is also provided on the fifth connection pipe 513 to collect the refrigerant high-pressure signal and convert it into an electrical signal for transmission.

[0054] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A cycle refrigeration unit, characterized in that, Comprising: Installation frame; Installation plate, the installation plate is arranged at the inner bottom of the installation frame, and an installation rack and an installation groove are respectively arranged on one side of the installation plate. The installation rack and the installation groove on the installation plate are used for installing the internal structure located in the installation frame; Condenser, a heat dissipation copper row is arranged inside the condenser, and a plurality of copper pipe interfaces are arranged on the outside of one side of the condenser where the heat dissipation copper row extends. The condenser is arranged on one side of the installation plate, and the opening of the condenser faces the installation rack; One fan, one fan is symmetrically arranged at the top end of the installation frame, and the fan is located above the condenser. The fan is communicated with the inside of the installation frame; Refrigeration system, the refrigeration system is arranged inside the installation frame, the refrigeration system is arranged on the other side of the installation plate, one end of the refrigeration system is connected to a plurality of copper pipe interfaces of the condenser, and the other end of the refrigeration system is connected to the outside of the installation frame; Specifically, the refrigeration system includes: a compressor, a gas-liquid separation tank, a flash tank, a four-way connection structure and a double electronic expansion valve connection structure; The gas-liquid separation tank, the flash tank and the compressor are arranged in parallel on the installation plate through the installation groove in sequence, and are located on one side of the condenser; The four-way connection structure is arranged above the flash tank, and the compressor is connected to the condenser, the gas-liquid separation tank and the flash tank respectively through the four-way connection structure; The double electronic expansion valve connection structure is arranged on the installation plate through the installation rack, the double electronic expansion valve connection structure is located above the flash tank, the flash tank is connected to the condenser through the double electronic expansion valve connection structure, and the other end of the flash tank is connected to the outside of the installation frame.

2. The cycle refrigeration unit according to claim 1, characterized in that, The condenser is in a C-shaped structure, and the gas-liquid separation tank, the flash tank and the compressor are arranged in parallel along the C-shaped opening of the condenser.

3. The cycle refrigeration unit according to claim 2, characterized in that, The area ratio of the condenser in the installation frame is greater than the area ratio of the refrigeration system in the installation frame.

4. A cycle refrigeration unit according to any one of claims 1 to 3, characterized in that, The double electronic expansion valve connection structure includes: First expansion valve, the first expansion valve is arranged on one side of the top end of the flash tank, and one end of the first expansion valve is communicated with the inside of the flash tank; Drying filter, the drying filter is arranged on the installation rack, one end of the drying filter is connected to the first expansion valve through a first connecting pipe, and the other end of the drying filter is connected to the condenser through a second connecting pipe; Second expansion valve, the second expansion valve is arranged on the other side of the top end of the flash tank, one end of the second expansion valve is communicated with the inside of the flash tank, and the other end of the second expansion valve is communicated with the outside of the installation frame; Copper filter, the copper filter is arranged on one side of the second expansion valve, one end of the copper filter is connected to the other end of the second expansion valve, and the other end of the copper filter is connected to the external liquid inlet.

5. A cycle refrigeration unit according to claim 4, characterized in that, A first ball valve is arranged on the other end of the copper filter.

6. A cycle refrigeration unit according to claim 5, characterized in that, The four-way connection structure includes: Four-way valve, the four-way valve is arranged above the flash tank, and the four-way valve is provided with a first connection port, a second connection port, a third connection port and a fourth connection port; Among them, the first connection port is located on the side of the four-way valve close to the compressor, and the second connection port, the third connection port and the fourth connection port are parallel and located on the other side of the four-way valve close to the gas-liquid separation tank; Third connecting pipe, one end of the third connecting pipe is connected to the four-way valve through the first connection port, and the other end of the third connecting pipe is connected to the compressor; Fourth connecting pipe, one end of the fourth connecting pipe is connected to the second connection port of the four-way valve, and the other end of the fourth connecting pipe is connected to the heat dissipation copper row in the condenser; Fifth connecting pipe, one end of the fifth connecting pipe is connected to the third connection port of the four-way valve, and the other end of the fifth connecting pipe is connected to the gas-liquid separation tank; Sixth connecting pipe, one end of the sixth connecting pipe is arranged at the fourth connection port of the four-way valve, and a second ball valve is further arranged at the other end of the sixth connecting pipe, and the second ball valve is used to connect the liquid inlet pipe and the liquid return pipe of the cooling system.

7. A cycle refrigeration unit according to claim 6, characterized in that, A first sensor is also arranged on the third connecting pipe.

8. A cycle refrigeration unit according to claim 7, characterized in that, A second sensor is also arranged on the fifth connecting pipe.

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