Integrated freezing and refrigerating unit

Abstract

The utility model relates to an integrated freezing and refrigerating unit which comprises a shell, an evaporation cavity and a condensation cavity are arranged in the shell, an evaporation fan and an evaporator are installed in the evaporation cavity, an air supply outlet, an air return inlet and a fresh air inlet are formed in the shell of the evaporation cavity, and the air return inlet and the fresh air inlet are formed in the air inlet side of the evaporator. Fresh air is sent out through the air supply outlet after exchanging heat with the evaporator, a condensation fan, a condenser and a compressor are installed in the condensation cavity, a waste discharge inlet, a condensation air inlet and a condensation air outlet are formed in a shell of the condensation cavity, the waste discharge inlet and the condensation air inlet are formed in the air inlet side of the condenser, and the condensation air outlet is formed in the air outlet side of the condenser. And exhaust gas is discharged from the condensation air outlet after exchanging heat with the condenser. The indoor unit, the outdoor unit and the ventilation device are integrated, the unit structure is simplified, the cost is saved, time and labor are saved during installation, meanwhile, the load of the unit is reduced, and the refrigerating capacity of the unit is improved.

Description

Technical Field

[0001] The utility model relates to the field of refrigeration and cold storage equipment technology, in particular to an integrated refrigeration and cold storage unit. Background Art

[0002] At present, the refrigeration and cold storage units of cold storages are generally split-type, which are relatively complex to install, have a relatively high installation cost, and also occupy the space of the cold storage.

[0003] For fruit and vegetable fresh-keeping cold storages, since the main stored goods are plant-based goods such as fruits and vegetables, if the oxygen supply is insufficient, the fruits and vegetables will carry out anaerobic respiration to generate products such as ethanol and acetaldehyde, causing physiological diseases. Therefore, a ventilation and air exchange device needs to be separately installed to introduce fresh air outside the warehouse and discharge the waste gas inside the warehouse.

[0004] The separately installed ventilation and air exchange device has the following deficiencies:

[0005] (1) It is necessary to separately install a ventilation and air exchange device, the installation structure is complex, and the cost is high.

[0006] (2) The cold waste gas inside the warehouse is directly discharged outside the warehouse, and the cold energy cannot be effectively utilized.

[0007] (3) The high-temperature fresh air outside the warehouse is sent into the warehouse, which not only increases the warehouse temperature and is not conducive to the storage quality, but also increases the cooling load of the warehouse temperature and the unit, and also causes a certain amount of energy waste. Content of the Utility Model

[0008] The main technical problem to be solved by the utility model is to provide an integrated refrigeration and cold storage unit that integrates ventilation and air exchange functions, simplifies the unit structure, reduces costs, and is beneficial to reducing the unit load and improving the refrigeration capacity of the unit.

[0009] To solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0010] An integrated refrigeration and cold storage unit includes a housing. An evaporation chamber and a condensation chamber are arranged inside the housing. An evaporation fan and an evaporator are installed in the evaporation chamber. An air supply port, an air return port and a fresh air port are opened on the housing of the evaporation chamber. The air return port and the fresh air port are arranged on the air inlet side of the evaporator. After the fresh air exchanges heat with the evaporator, it is sent out from the air supply port. A condensation fan, a condenser and a compressor are installed in the condensation chamber. A waste discharge port, a condensation air inlet and a condensation air outlet are opened on the housing of the condensation chamber. The waste discharge port and the condensation air inlet are arranged on the air inlet side of the condenser. The waste discharge gas exchanges heat with the condenser and is discharged from the condensation air outlet.

[0011] Further, the evaporation chamber is arranged above the condensation chamber and is separated by a horizontal partition.

[0012] Furthermore, the condensation air inlet is opened on the bottom plate of the shell, the waste discharge inlet is opened on the first side plate of the shell, and the condensation air outlet is opened on the second side plate of the shell.

[0013] Furthermore, the condenser, condensing fan and compressor are installed side by side in the condensing chamber in sequence along the flow direction of the exhaust gas.

[0014] Furthermore, the evaporator is horizontally placed in the shell above the fresh air inlet and the return air inlet, the evaporating fan is installed above the evaporator, and the air supply outlet is opened on the top plate of the shell.

[0015] Furthermore, the fresh air inlet and the return air inlet are installed on a side panel on the same side of the shell, and the fresh air inlet is placed above the return air inlet.

[0016] Furthermore, a waste exhaust valve is installed at the waste exhaust inlet.

[0017] Furthermore, a fresh air valve is installed at the fresh air inlet.

[0018] Furthermore, an electric control box is installed in the evaporation chamber.

[0019] Furthermore, the unit is installed on one side outside the cold storage, and the air supply port, the return air port, and the waste exhaust port are connected to the space inside the cold storage through air ducts respectively.

[0020] In summary, the integrated refrigeration unit provided by the present invention has the following advantages compared with the prior art:

[0021] (1) The utility model integrates the indoor unit, the outdoor unit and the ventilation device into an integrated design, realizing integrated disassembly and assembly, which not only saves costs, but also saves time and effort in installation, and is convenient for inspection and maintenance. At the same time, the whole machine is installed outside the warehouse and does not occupy space in the cold storage.

[0022] (2) The utility model utilizes an evaporating fan to introduce fresh air from outside the warehouse, utilizes a condensing fan to discharge waste gas from inside the warehouse, and also utilizes the condensation air outlet of the condensation chamber as a waste outlet, thereby eliminating the need for a separately set ventilation device and the need to separately open a waste outlet on the unit casing, thus simplifying the unit structure and being more conducive to efficient use of cold storage space and cost control.

[0023] (3) The utility model introduces fresh air from outside the cold storage by means of an evaporating fan, and the fresh air is sent into the cold storage after being cooled by the evaporator, thereby avoiding a rapid increase in the storage temperature and achieving the purpose of fresh air pre-cooling.

[0024] (4) The utility model discharges the waste exhaust gas in the storage into the condenser. When the relatively low-temperature waste exhaust gas is discharged, it first exchanges heat with the condenser, reducing the inlet air temperature of the condenser, thereby reducing the condensation temperature of the unit and enhancing the refrigeration capacity of the unit, achieving the purpose of energy recovery.

[0025] The following further describes in detail the specific implementation manners of the utility model with reference to the accompanying drawings. Description of the Drawings

[0026] As a part of the utility model, the accompanying drawings are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model, but do not constitute an improper limitation to the utility model. Obviously, the accompanying drawings in the following description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] In the accompanying drawings:

[0028] Figure 1 is a schematic structural diagram of the unit of the utility model;

[0029] Figure 2 is a schematic diagram of the air field of the unit of the utility model in the normal refrigeration mode;

[0030] Figure 3 is a schematic diagram of the air field of the unit of the utility model when the ventilation function is turned on.

[0031] In the figures:

[0032] housing 1, top plate 1a, side plate 1b, bottom plate 1c, side plate 1d, evaporation chamber 2, condensation chamber 3, evaporation fan 4, evaporator 5, air supply outlet 6, air return inlet 7, fresh air inlet 8, condensation fan 9, condenser 10, compressor 11, waste exhaust inlet 12, condensation air inlet 13, condensation air outlet 14, transverse partition 15, fresh air valve 16, waste exhaust valve 17, air supply duct 18, air return duct 19, waste exhaust duct 20, electric control box 21.

[0033] It should be noted that the accompanying drawings and the text description are not intended to limit the scope of the concept of the utility model in any way, but to illustrate the concept of the utility model to those skilled in the art by referring to specific embodiments. Specific Embodiments

[0034] To make the purpose, technical solutions, and advantages of the embodiments of the utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the utility model with reference to the accompanying drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model, but are not used to limit the scope of the utility model.

[0035] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0036] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium. 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 circumstances.

[0037] As Figure 1 shown, the present utility model provides an integrated refrigeration and cold storage unit, including a housing 1. An evaporation chamber 2 and a condensation chamber 3 are provided inside the housing 1. An evaporation fan 4 and an evaporator 5 are installed in the evaporation chamber 2. An air supply opening 6, a return air opening 7, and a fresh air opening 8 are provided on the housing 1 of the evaporation chamber 2. A condensation fan 9, a condenser 10, and a compressor 11 are installed in the condensation chamber 3. A waste discharge inlet 12, a condensation air inlet 13, and a condensation air outlet 14 are provided on the housing 1 of the condensation chamber 3.

[0038] In this embodiment, the return air opening 7 and the fresh air opening 8 are arranged on the air inlet side of the evaporator 5, and the air supply opening 6 is arranged on the air outlet side of the evaporator 5. The fresh air outside the warehouse enters the evaporation chamber 2 through the fresh air opening 8 under the action of the evaporation fan 4, and is mixed with the return air inside the warehouse entering through the return air opening 7. The mixed air exchanges heat through the evaporator 5 and is sent out through the air supply opening 6 at the top. By using the evaporation fan 4 to introduce the fresh air outside the warehouse, there is no need to additionally set up a fresh air fan, which saves costs. At the same time, the fresh air outside the warehouse is first cooled by exchanging heat with the evaporator 5 and then sent into the cold storage, avoiding a rapid increase in the cold storage temperature and achieving the purpose of pre-cooling the fresh air.

[0039] In this embodiment, the waste exhaust inlet 12 and the condensate air inlet 13 are arranged on the air inlet side of the condenser 10, and the condensate air outlet 14 is arranged on the air outlet side of the condenser 10. The waste exhaust gas in the cold storage enters the condensation chamber 3 through the waste exhaust inlet 12 under the action of the condensation fan 9. At the same time, the air outside the cold storage also enters the condensation chamber 3 through the condensate air inlet 13. The waste exhaust gas and the air outside the cold storage pass through the condenser 10 at the same time and exchange heat with the refrigerant in the condenser 10. The waste exhaust gas and the air outside the cold storage after heat exchange are then discharged from the unit through the condensate air outlet 14. The condensation fan 9 is used to discharge the waste exhaust gas in the cold storage, and at the same time, the condensate air outlet 14 of the condensation chamber 3 is used as the waste exhaust outlet. There is no need to separately install a waste exhaust fan, nor to separately open a waste exhaust outlet on the housing 1 of the unit, which simplifies the structure of the unit and saves costs. At the same time, the low-temperature waste exhaust gas in the cold storage is discharged after first exchanging heat through the condenser 10, which reduces the air inlet temperature of the condenser 10, thereby reducing the condensation temperature of the unit and improving the refrigeration capacity of the unit, achieving the purpose of energy recovery.

[0040] In this embodiment, it is further preferred that the evaporation chamber 2 is arranged above the condensation chamber 3 and separated by a horizontal partition 15 in the middle. The evaporator 5 is horizontally arranged in the housing 1 above the fresh air inlet 8 and the return air inlet 7. The evaporation fan 4 is installed above the evaporator 5, and the air supply outlet 6 is opened on the top plate 1a of the housing 1. The fresh air inlet 8 and the return air inlet 7 are installed on the side plate 1b on the same side of the housing 1, and the fresh air inlet 8 is placed above the return air inlet 7. This is beneficial to simplifying the structure of the unit, making the structure of the unit more compact and facilitating installation and maintenance. At the same time, the return air inlet 7 and the fresh air inlet 8 are arranged on the side of the housing 1, and the air supply outlet 6 is arranged on the top of the housing 1, which is also further beneficial to arranging the air supply duct 18 and the return air duct 19 to communicate with the space in the cold storage, reducing costs and reducing the cold loss generated during the flow of gas in the duct.

[0041] In this embodiment, it is further preferred that the condensate air inlet 13 is opened on the bottom plate 1c of the housing 1, and the waste exhaust inlet 12 is opened on the side plate of the housing 1. In order to ensure the condensate air intake, the bottom of the unit housing 1 is fixed to the ground through mounting feet, raising the bottom plate of the housing 1 to form an air circulation channel between the housing 1 and the ground. This can ensure both the condensate air intake and the waste exhaust air volume, and at the same time is beneficial to simplifying the structure.

[0042] In order to simplify the structure, in this embodiment, it is further more preferred that the waste exhaust inlet 12, the fresh air inlet 8 and the return air inlet 7 are opened on the same side plate 1b, and the condensate air outlet 14 is opened on the side plate 1d on the opposite side of the waste exhaust inlet 12. In this way, it is also beneficial to simplifying the structure of the unit, making the structure of the unit more compact and facilitating installation and maintenance. At the same time, it is also further beneficial to arranging the waste exhaust duct 20 to communicate with the space in the cold storage, reducing costs and reducing the cold loss generated during the flow of gas in the duct.

[0043] In this embodiment, it is further preferably that the condenser 10, the condensing fan 9 and the compressor 11 are arranged side by side in sequence along the flowing direction of the waste exhaust gas in the condensation chamber 3. The condenser 10 is vertically installed on the bottom plate 1c of the housing 1, the condensing fan 9 is installed on the side of the condenser 9 facing away from the waste exhaust inlet 12, and the compressor 11 is installed on the air outlet side of the condensing fan 9. This can not only make the unit structure more compact, enable the waste exhaust gas to fully exchange heat with the condenser 10, but also facilitate further using the waste exhaust gas to cool down the compressor 11.

[0044] In this embodiment, a fresh air valve 16 is installed at the fresh air inlet 8, and a waste exhaust valve 17 is installed at the waste exhaust inlet 12, which is used to adjust the fresh air volume and the waste exhaust volume as needed to ensure the oxygen content in the cold storage environment, and further ensure the freshness of the stored food in the warehouse.

[0045] In this embodiment, the electric control box 21 is installed in the evaporation chamber 2, and the relatively low-temperature return air in the cold storage can be used to cool down the electric control box 21, improving the service life of each electrical component in the electric control box 21.

[0046] As Figure 2 and Figure 3 shown, in this embodiment, the whole unit is installed on one side outside the cold storage. The air supply outlet 6 is communicated with the inside of the cold storage through the air supply duct 18, the air return inlet 7 is communicated with the inside of the cold storage through the air return duct 19, and the waste exhaust inlet 12 is communicated with the inside of the cold storage through the waste exhaust duct 20. The air supply duct 18 extends upward from the air supply outlet 6 at the top and is connected to the cold air inlet at the top of the cold storage wall. Since the air return inlet 7 and the waste exhaust inlet 12 are arranged on the side plate 1b of the housing 1, the air return duct 19 and the waste exhaust duct 20 directly pass through the cold storage wall, which is beneficial to shortening the lengths of the air return duct 19 and the waste exhaust duct 20.

[0047] The working principle of this unit is as follows:

[0048] As Figure 2 shown, when performing the normal refrigeration mode, the air in the cold storage enters the evaporation chamber 2 from the air return inlet 7 under the action of the evaporation fan 4. The return air is then cooled down after exchanging heat with the evaporator 5 and is sent out from the air supply outlet 6 at the top, continuously circulating for cooling; at the same time, the outside air enters the condensation chamber 3 through the condensation air inlet 13, exchanges heat with the condenser 10 and is discharged from the condensation air outlet 14.

[0049] As Figure 3As shown in the figure, when the ventilation mode is executed, the fresh air outside the cold storage enters the evaporation chamber 2 of the unit through the fresh air valve 16 under the action of the evaporation fan 4. At the same time, the air inside the cold storage enters the evaporation chamber 2 from the return air inlet 7 under the action of the evaporation fan 4. The fresh air and the return air are mixed and exchange heat with the evaporator 2. After being cooled by exchanging heat with the evaporator 2, it is sent out from the air supply outlet 6 and sent into the cold storage through the air supply duct 18. At the same time, the exhaust gas inside the cold storage enters the condensation chamber 3 from the exhaust gas inlet 12 under the action of the condensation fan 9. The air outside the warehouse enters the condensation chamber 3 through the condensation air inlet 13 under the action of the condensation fan 9. The exhaust gas is mixed with the air outside the warehouse and passes through the condenser 10. Since the temperature of the exhaust gas inside the cold storage is relatively low, the inlet air temperature of the condenser 10 is reduced. After passing through the condenser 10, it is discharged into the outside air through the condensation air outlet 14 under the action of the condensation fan 9.

[0050] The integrated freezing and refrigeration unit provided by the present utility model has the following advantages compared with the prior art:

[0051] 1. The present utility model integrates the indoor unit, the outdoor unit and the ventilation device into an integrated design, realizing integrated disassembly and assembly, which not only saves costs, but also saves time and effort in installation, and is convenient for inspection and maintenance. At the same time, the whole machine is installed outside the warehouse, without occupying the space inside the cold storage.

[0052] 2. The present utility model uses the evaporation fan to introduce fresh air outside the warehouse, uses the condensation fan to discharge the exhaust gas inside the warehouse, and also uses the condensation air outlet of the condensation chamber as the exhaust outlet, eliminating the need for a separately provided ventilation device and not requiring a separate exhaust outlet to be opened on the housing of the unit, simplifying the structure of the unit and being more conducive to the efficient use of the cold storage space and cost control.

[0053] 3. The present utility model introduces fresh air outside the warehouse by the evaporation fan, and the fresh air is sent into the cold storage after being cooled by the evaporator, avoiding the rapid rise of the warehouse temperature and achieving the purpose of pre-cooling the fresh air.

[0054] 4. The present utility model discharges the waste cold air inside the warehouse by the condensation fan. When the waste cold air is discharged, it first exchanges heat with the condenser, reducing the inlet air temperature of the condenser, thereby reducing the condensation temperature of the unit and improving the refrigeration capacity of the unit, achieving the purpose of energy recovery.

[0055] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present utility model, can make some changes or modifications using the technical content prompted above into equivalent embodiments of equivalent changes. The implementation schemes in the above embodiments can be further combined or replaced. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An integrated refrigeration unit, comprising a housing, characterized in that: An evaporation chamber and a condensation chamber are arranged in the shell, an evaporation fan and an evaporator are installed in the evaporation chamber, an air supply port, a return air port and a fresh air port are provided on the shell of the evaporation chamber, the return air port and the fresh air port are arranged on the air inlet side of the evaporator, and the fresh air is sent out from the air supply port after heat exchange with the evaporator, a condensation fan, a condenser and a compressor are installed in the condensation chamber, a waste gas inlet, a condensation air inlet and a condensation air outlet are provided on the shell of the condensation chamber, the waste gas inlet and the condensation air inlet are arranged on the air inlet side of the condenser, and the waste gas is discharged from the condensation air outlet after heat exchange with the condenser.

2. The integrated refrigeration unit according to claim 1, characterized in that: The evaporation chamber is arranged above the condensation chamber and is separated in the middle by a transverse partition.

3. The integrated refrigeration unit according to claim 1, characterized in that: The condensation air inlet is opened on the bottom plate of the shell, the exhaust inlet is opened on the first side plate of the shell, and the condensation air outlet is opened on the second side plate of the shell.

4. The integrated refrigeration unit according to claim 3, characterized in that: The condenser, condensing fan and compressor are installed in the condensing chamber in sequence and side by side along the flow direction of the exhaust gas.

5. The integrated refrigeration unit according to claim 1, characterized in that: The evaporator is horizontally placed in the shell above the fresh air inlet and the return air inlet, the evaporating fan is installed above the evaporator, and the air supply outlet is opened on the top plate of the shell.

6. The integrated refrigeration unit according to claim 5, characterized in that: The fresh air inlet and the return air inlet are installed on the side plate on the same side of the shell, and the fresh air inlet is placed above the return air inlet.

7. The integrated refrigeration unit according to claim 1, characterized in that: A waste exhaust valve is installed at the waste exhaust inlet.

8. The integrated refrigeration unit according to claim 1, characterized in that: A fresh air valve is installed at the fresh air inlet.

9. The integrated refrigeration unit according to claim 1, characterized in that: An electric control box is installed in the evaporation chamber.

10. The integrated refrigeration unit according to any one of claims 1 to 9, characterized in that: The unit is installed on one side outside the cold storage, and the air supply port, the return air port, and the waste exhaust port are connected to the space inside the cold storage through air ducts respectively.

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