Refrigeration and dehumidification system for refrigeration house

Abstract

The utility model discloses a refrigeration and dehumidification system for a refrigeration house. The refrigeration and dehumidification system comprises a compressor, the condenser is connected with the compressor through a three-way valve; and a heat exchanger; an evaporation coil and a heating coil are arranged in the heat exchanger, the evaporation coil is connected to the compressor and the throttling valve through a mixing channel, the compressor is connected to the three-way valve through the mixing channel, the condenser is connected to the three-way valve and the throttling valve through a refrigeration channel, and the heating coil is connected to the three-way valve and the throttling valve through a dehumidification channel. The refrigeration and dehumidification system not only can control the temperature of the refrigeration house, but also can dehumidify, meets the use requirements of different refrigeration houses, and widens the working range of the refrigeration and dehumidification system.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to a refrigeration and dehumidification system for a cold storage. Background Art

[0002] With the continuous improvement of people's living standards, modern agricultural breeding has also been rapidly developed. Cold storage for breeding, such as strawberry breeding storage, edible fungus breeding storage, etc., is increasingly used. For these breeding storages, there are not only temperature requirements, but also humidity requirements, especially humidity requirements. Ordinary dehumidifiers cannot meet the required requirements for these cold storages, affecting the breeding effect. Utility Model Content

[0003] The utility model aims to provide a technical solution for a refrigeration and dehumidification system for a cold storage in view of the deficiencies in the prior art, which can not only control the temperature of the cold storage, but also perform dehumidification, meet the use requirements of different cold storages, and improve the working range of the refrigeration and dehumidification system.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A refrigeration and dehumidification system for a cold storage, comprising:

[0006] a compressor;

[0007] a condenser, the condenser is connected to the compressor via a three-way valve;

[0008] and a heat exchanger;

[0009] Features:

[0010] An evaporating coil and a heating coil are arranged in the heat exchanger. The evaporating coil is connected to the compressor and the throttle valve through a mixing channel. The compressor is connected to the three-way valve through a mixing channel. The condenser is respectively connected to the three-way valve and the throttle valve through a refrigeration channel. The heating coil is respectively connected to the three-way valve and the throttle valve through a dehumidification channel. Through the design of the above structure, not only the temperature of the cold storage can be controlled, but also dehumidification can be performed to meet the use requirements of different cold storages and improve the working range of the refrigeration and dehumidification system.

[0011] Furthermore, the mixing channel includes a first mixing pipeline, a second mixing pipeline and a third mixing pipeline. The compressor is connected to the three-way valve and the evaporating coil through the first mixing pipeline and the third mixing pipeline respectively. The evaporating coil is connected to the throttle valve through the second mixing pipeline. The high-temperature and high-pressure refrigerant gas discharged from the compressor can be transported to the three-way valve through the first mixing pipeline and diverted through the three-way valve. The throttle valve can reduce the refrigerant for throttling and pressure reduction, and input into the evaporating coil through the second mixing pipeline. The liquid refrigerant is evaporated into gas through the evaporating coil, and the evaporated gaseous refrigerant flows back to the compressor through the third mixing pipeline.

[0012] Furthermore, the refrigeration channel includes a first refrigeration cycle pipeline and a second refrigeration cycle pipeline. The three-way valve is connected to the condenser through the first refrigeration cycle pipeline, and the condenser is connected to the throttle valve through the second refrigeration cycle pipeline. The first refrigeration cycle pipeline is opened by the three-way valve, so that high-temperature and high-pressure refrigerant gas can enter the condenser, form liquid refrigerant, and then flow into the throttle valve through the second refrigeration cycle pipeline.

[0013] Furthermore, the dehumidification channel includes a first dehumidification circulation pipeline and a second dehumidification circulation pipeline. The three-way valve is connected to the heating coil through the first dehumidification circulation pipeline, and the heating coil is connected to the throttle valve through the second dehumidification circulation pipeline. The first dehumidification circulation pipeline is opened by the three-way valve, so that high-temperature and high-pressure refrigerant gas can enter the heating coil, which can not only cool the gaseous refrigerant into liquid, but also heat the low-temperature internal air after dehumidification.

[0014] Furthermore, the three-way valve is an electromagnetic three-way valve.

[0015] Furthermore, a first fan is provided in the condenser to increase the speed of air flow in the condenser.

[0016] Furthermore, a second fan is provided in the heat exchanger to increase the speed of air flow in the heat exchanger.

[0017] Furthermore, the heating coil is located between the second fan and the evaporating coil, which is beneficial for utilizing the high exhaust temperature of the refrigerant to heat the dehumidified low-temperature air flowing through the evaporating coil to reach the temperature before dehumidification.

[0018] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0019] The utility model can not only realize the control of the temperature of the cold storage, but also can perform dehumidification, meet the use requirements of different cold storages, and improve the working range of the refrigeration and dehumidification system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings:

[0021] Figure 1The utility model is a structural schematic diagram of a refrigeration and dehumidification system for a cold storage.

[0022] In the figure: 1- compressor; 2- three-way valve; 3- condenser; 4- throttle valve; 5- heat exchanger; 6- evaporator coil; 7- heating coil; 8- first fan; 9- second fan; 10- first mixing pipeline; 11- second mixing pipeline; 12- third mixing pipeline; 13- first refrigeration cycle pipeline; 14- second refrigeration cycle pipeline; 15- first dehumidification cycle pipeline; 16- second dehumidification cycle pipeline. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0026] like Figure 1 As shown, a refrigeration and dehumidification system for a cold storage of the utility model includes a compressor 1, a condenser 3 and a heat exchanger 5. The condenser 3 is connected to the compressor 1 through a three-way valve 2, and the three-way valve 2 is preferably an electromagnetic three-way valve. A first fan 8 is provided in the condenser 3 to increase the speed of air flow in the condenser 3.

[0027] An evaporating coil 6 and a heating coil 7 are provided in the heat exchanger 5. The evaporating coil 6 is connected to the compressor 1 and the throttle valve 4 through a mixing channel. The compressor 1 is connected to the three-way valve 2 through a mixing channel. The mixing channel includes a first mixing pipeline 10, a second mixing pipeline 11 and a third mixing pipeline 12. The compressor 1 is connected to the three-way valve 2 and the evaporating coil 6 through the first mixing pipeline 10 and the third mixing pipeline 12 respectively. The evaporating coil 6 is connected to the throttle valve 4 through the second mixing pipeline 11. The high-temperature and high-pressure refrigerant gas discharged from the compressor 1 can be transported to the three-way valve 2 through the first mixing pipeline 10, and is diverted through the three-way valve 2. The throttle valve 4 can reduce the refrigerant for throttling and pressure reduction, and is input into the evaporating coil 6 through the second mixing pipeline 11. The liquid refrigerant is evaporated into gas through the evaporating coil 6, and the evaporated gaseous refrigerant flows back to the compressor 1 through the third mixing pipeline 12.

[0028] The condenser 3 is respectively connected to the three-way valve 2 and the throttle valve 4 through a refrigeration channel. The refrigeration channel includes a first refrigeration cycle pipeline 13 and a second refrigeration cycle pipeline 14. The three-way valve 2 is connected to the condenser 3 through the first refrigeration cycle pipeline 13, and the condenser 3 is connected to the throttle valve 4 through the second refrigeration cycle pipeline 14. The first refrigeration cycle pipeline 13 is opened by the three-way valve 2, so that the high-temperature and high-pressure refrigerant gas can enter the condenser 3, form liquid refrigerant, and then flow into the throttle valve 4 through the second refrigeration cycle pipeline 14.

[0029] The heating coil 7 is connected to the three-way valve 2 and the throttle valve 4 through the dehumidification channel. The dehumidification channel includes a first dehumidification circulation pipeline 15 and a second dehumidification circulation pipeline 16. The three-way valve 2 is connected to the heating coil 7 through the first dehumidification circulation pipeline 15, and the heating coil 7 is connected to the throttle valve 4 through the second dehumidification circulation pipeline 16. The first dehumidification circulation pipeline 15 is opened through the three-way valve 2, so that the high-temperature and high-pressure refrigerant gas can enter the heating coil 7, which can not only cool the gaseous refrigerant into liquid, but also heat the low-temperature air inside after dehumidification.

[0030] Through the design of the above structure, not only can the temperature of the cold storage be controlled, but also dehumidification can be performed to meet the use requirements of different cold storages and improve the working range of the refrigeration and dehumidification system.

[0031] A second fan 9 is also provided in the heat exchanger 5 for increasing the speed of air flow in the heat exchanger 5. The heating coil 7 is located between the second fan 9 and the evaporating coil 6, which is beneficial to utilizing the high exhaust temperature of the refrigerant to heat the dehumidified low-temperature air flowing through the evaporating coil 6 to reach the temperature before dehumidification.

[0032] When the utility model is actually working:

[0033] Cooling mode (such as Figure 1(a) Path direction in the figure: The high-temperature and high-pressure refrigerant gas discharged from the compressor 1 enters the condenser 3 through the first mixing pipeline 10, the three-way valve 2, and the first refrigeration cycle pipeline 13. At this time, the first dehumidification cycle pipeline 15 of the three-way valve 2 leading to the heating coil 7 is in a closed state. After the refrigerant is cooled into liquid in the condenser 3, it enters the throttle valve 4 through the second refrigeration cycle pipeline 14. The refrigerant is throttled and decompressed by the throttle valve 4, and then enters the evaporation coil 6 through the second mixing pipeline 11, evaporating the liquid refrigerant into gas, thereby absorbing the heat in the cold storage and achieving the purpose of lowering the storage temperature. The evaporated gaseous refrigerant returns to the compressor 1 through the third mixing pipeline 12.

[0034] Dehumidification mode (such as Figure 1 b path direction): The high-temperature and high-pressure refrigerant gas discharged from the compressor 1 enters the heating coil 7 through the first mixing pipeline 10, the three-way valve 2, and the first dehumidification circulation pipeline 15. At this time, the first refrigeration circulation pipeline 13 from the three-way valve 2 to the condenser 3 is in a closed state. After passing through the heating coil 7, the gaseous refrigerant can not only be cooled into liquid, but also the low-temperature air after dehumidification flowing through the evaporation coil 6 can be heated by utilizing the high exhaust temperature of the refrigerant to reach the temperature before dehumidification. The cooled liquid refrigerant then flows into the throttle valve 4 through the second dehumidification circulation pipeline 16, and the refrigerant is throttled and decompressed by the throttle valve 4, and then enters the evaporation coil 6 through the second mixing pipeline 11, evaporating the liquid refrigerant into gaseous state, thereby reducing the surface temperature of the evaporation coil 6, and causing the humid air flowing through the outer surface of the evaporation coil 6 to condense and dehydrate on the surface of the evaporation coil 6, thereby achieving the purpose of dehumidification. The evaporated gaseous refrigerant then returns to the compressor 1 through the third mixing pipeline 12.

[0035] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A refrigeration and dehumidification system for cold storage, comprising: a compressor; a condenser, the condenser being connected to the compressor via a three-way valve; and a heat exchanger; Features: The heat exchanger is provided with an evaporating coil and a heating coil, the evaporating coil is connected to the compressor and the throttle valve through a mixing channel, the compressor is connected to the three-way valve through the mixing channel, the condenser is respectively connected to the three-way valve and the throttle valve through a refrigeration channel, and the heating coil is respectively connected to the three-way valve and the throttle valve through a dehumidification channel.

2. A refrigeration and dehumidification system for cold storage according to claim 1, characterized in that: The mixing channel includes a first mixing pipeline, a second mixing pipeline and a third mixing pipeline. The compressor is connected to the three-way valve and the evaporation coil through the first mixing pipeline and the third mixing pipeline respectively. The evaporation coil is connected to the throttle valve through the second mixing pipeline.

3. The refrigeration and dehumidification system for cold storage according to claim 1, characterized in that: The refrigeration channel includes a first refrigeration cycle pipeline and a second refrigeration cycle pipeline. The three-way valve is connected to the condenser through the first refrigeration cycle pipeline, and the condenser is connected to the throttle valve through the second refrigeration cycle pipeline.

4. The refrigeration and dehumidification system for cold storage according to claim 1, characterized in that: The dehumidification channel includes a first dehumidification circulation pipeline and a second dehumidification circulation pipeline. The three-way valve is connected to the heating coil through the first dehumidification circulation pipeline, and the heating coil is connected to the throttle valve through the second dehumidification circulation pipeline.

5. The refrigeration and dehumidification system for cold storage according to claim 1, characterized in that: The three-way valve is an electromagnetic three-way valve.

6. A refrigeration and dehumidification system for cold storage according to claim 1, characterized in that: The condenser is provided with a first fan for increasing the speed of air flow in the condenser.

7. The refrigeration and dehumidification system for cold storage according to claim 1, characterized in that: A second fan is provided in the heat exchanger to increase the speed of air flow in the heat exchanger.

8. A refrigeration and dehumidification system for cold storage according to claim 7, characterized in that: The heating coil is located between the second fan and the evaporating coil.

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