A new type of one-to-two freezing, refrigeration and drying system

Abstract

The present invention provides a novel one-to-two freezing, refrigeration and drying system, which solves the needs of two freezing and refrigeration warehouses through a set of systems, and its defrosting is fast and energy-saving, and it also takes into account heat pump drying, and can provide heat pump drying function for places with drying needs. The first warehouse heat exchanger is arranged in the first warehouse, and the second warehouse heat exchanger is arranged in the second warehouse. The air outlet of the compressor is connected to the oil separator, and the gas output end of the oil separator is connected to the D port of the first four-way valve. The C port of the first four-way valve is connected to the first medium port of the outdoor heat exchanger, and the second medium port of the outdoor heat exchanger is connected to the first port of the liquid reservoir. The second port of the liquid reservoir is connected in parallel to the D port of the second four-way valve and the D port of the third four-way valve. The C port of the second four-way valve is connected to the first expansion valve and then connected to the first port of the first warehouse heat exchanger. The second port of the first warehouse heat exchanger is connected to the E port of the second four-way valve, and the S port of the second four-way valve is connected to the E port of the first four-way valve through a pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of sludge drying equipment, in particular to a novel one-to-two freezing, refrigeration and drying system. Background Art

[0002] There are more and more community fruit and vegetable supermarkets now. Some items need to be refrigerated and others need to be frozen, but the warehouses are very small. Using existing products, one set of freezing and refrigeration equipment corresponds to one warehouse, which is not economical and consumes a lot of energy. Moreover, most of the current small-scale freezing and refrigeration equipment uses thermal expansion valve electric defrosting, which has a long defrosting cycle, high warehouse temperature rise, and high energy consumption. Summary of the invention

[0003] In view of the above problems, the present invention provides a novel one-to-two freezing, refrigeration and drying system, which solves the needs of two freezing and refrigeration warehouses through a set of systems, and has fast defrosting and low energy consumption, and also takes heat pump drying into consideration. For places with drying needs, heat pump drying function can be provided.

[0004] A novel one-to-two freezing, refrigeration and drying system, characterized in that it includes a compressor, an outdoor heat exchanger, a first storage heat exchanger, and a second storage heat exchanger, wherein the first storage heat exchanger is arranged in the first storage, and the second storage heat exchanger is arranged in the second storage, the air outlet of the compressor is connected to an oil separator, the air output end of the oil separator is connected to the D port of the first four-way valve, the C port of the first four-way valve is connected to the first medium port of the outdoor heat exchanger, the second medium port of the outdoor heat exchanger is connected to the first port of a liquid reservoir, the second port of the liquid reservoir is connected in parallel to the D port of the second four-way valve and the D port of the third four-way valve, and the C port of the second four-way valve is connected to the first medium port of the outdoor heat exchanger. The first expansion valve is connected to the first port of the first storage heat exchanger, the second port of the first storage heat exchanger is connected to the E port of the second four-way valve, the S port of the second four-way valve is connected to the E port of the first four-way valve through a pipeline, the C port of the third four-way valve is connected to the first port of the second storage heat exchanger after being connected to the second expansion valve, the second port of the second storage heat exchanger is connected to the E port of the third four-way valve, the S port of the third four-way valve is connected to the E port of the first four-way valve through a pipeline, the S port of the first four-way valve is connected to the inlet of the gas-liquid separator through a pipeline, and the outlet of the gas-liquid separator is connected to the suction port of the compressor.

[0005] It is further characterized in that: the oil output end of the oil separator is connected to the air intake port of the compressor;

[0006] The second four-way valve and the first expansion valve are arranged in the first reservoir;

[0007] The third four-way valve and the second expansion valve are arranged in the second reservoir;

[0008] The outdoor heat exchanger, the first heat exchanger, and the second heat exchanger are all provided with corresponding fans.

[0009] After adopting the present invention, it can carry out four working modes: double-storage refrigeration and freezing, double-storage refrigeration and freezing with defrosting of the first warehouse, double-storage refrigeration and freezing with defrosting of the second warehouse, and double-storage drying. It uses a set of system to solve the needs of two refrigeration and freezing warehouses, adopts four-way valve reverse defrosting and electronic expansion valve to control flow, and defrosting is fast and consumes little energy. It also takes into account the ability of heat pump drying, and can provide heat pump drying function for places with drying needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the present invention;

[0011] The names corresponding to the serial numbers in the figure are as follows:

[0012] Compressor 1, oil separator 2, first four-way valve 3, C port 3C, D port 3D, E port 3E, S port 3S, outdoor heat exchanger 4, liquid receiver 5, gas-liquid separator 6, second four-way valve 7, C port 7C, D port 7D, E port 7E, S port 7S, third four-way valve 8, C port 8C, D port 8D, E port 8E, S port 8S, first expansion valve 9, second expansion valve 10, first reservoir heat exchanger 11, second reservoir heat exchanger 12, first reservoir 13, second reservoir 14, fan 15. DETAILED DESCRIPTION

[0013] A new type of one-to-two freezing, refrigeration and drying system, see Figure 1 :It includes a compressor 1, an outdoor heat exchanger 4, a first storage heat exchanger 11, and a second storage heat exchanger 12. The first storage heat exchanger 11 is arranged in the first storage 13, and the second storage heat exchanger 12 is arranged in the second storage 14. The air outlet of the compressor 1 is connected to the oil separator 2, and the air output end of the oil separator 2 is connected to the D port 3D of the first four-way valve 3, and the C port 3C of the first four-way valve 3 is connected to the medium first port of the outdoor heat exchanger 4. The medium second port of the outdoor heat exchanger 4 is connected to the first port of the liquid reservoir 5, and the second port of the liquid reservoir 5 is connected in parallel to the D port 7D of the second four-way valve 7 and the D port 8D of the third four-way valve 8. The C port 7C of the second four-way valve 7 is connected to the first expansion valve 9 is connected to the first port of the first storage heat exchanger 11, the second port of the first storage heat exchanger 11 is connected to the E port 7E of the second four-way valve 7, the S port 7S of the second four-way valve 7 is connected to the E port 3E of the first four-way valve 3 through a pipeline, the C port 8C of the third four-way valve 8 is connected to the second expansion valve 10 and then connected to the first port of the second storage heat exchanger 12, the second port of the second storage heat exchanger 12 is connected to the E port 8E of the third four-way valve 8, the S port 8S of the third four-way valve 8 is connected to the E port 3E of the first four-way valve 3 through a pipeline, the S port 3S of the first four-way valve 3 is connected to the inlet of the gas-liquid separator 6 through a pipeline, and the outlet of the gas-liquid separator 6 is connected to the suction port of the compressor 1.

[0014] The oil output end of the oil separator 2 is connected to the suction port of the compressor 1;

[0015] The second four-way valve 7 and the first expansion valve 9 are arranged in the first reservoir 13;

[0016] The third four-way valve 8 and the second expansion valve 10 are arranged in the second reservoir 14;

[0017] The outdoor heat exchanger 4 , the first heat exchanger 11 , and the second heat exchanger 12 are all provided with corresponding fans 15 .

[0018] Operation mode description:

[0019] 1. When the double storage is in refrigeration mode

[0020] The refrigerant discharged from the compressor 1 passes through the oil separator 2, the oil is separated and returned to the suction port of the compressor 1, and the separated refrigerant passes through the D port 3D-C port 3C of the first four-way valve 3 (the first four-way valve 3 is not powered), enters the outdoor heat exchanger 4 (the corresponding fan is running), and then passes through the liquid storage tank 5, and enters the two storages in two ways respectively;

[0021] First tank: the refrigerant coming out of the accumulator passes through the second four-way valve 7 (7D-7C, no power), then throttles through the first expansion valve 9, enters the first tank heat exchanger 11 (the corresponding fan is running), and passes through the second four-way valve 7 (7E-7S, no power);

[0022] Second reservoir: the refrigerant coming out of the liquid storage device passes through the third four-way valve 8 (8D-8C, no power), then passes through the second expansion valve 10 for throttling, enters the second reservoir heat exchanger 12 (the corresponding fan is running), and passes through the third four-way valve 8 (8E-8S, no power);

[0023] The refrigerants from the first and second refrigerants are mixed, enter the first four-way valve 3 (3E-3S), pass through the gas-liquid separator 6, and return to the compressor 1.

[0024] 2. When the double storage is in refrigeration mode and the first storage is defrosting

[0025] The refrigerant discharged from the compressor 1 passes through the oil separator 2, the oil is separated and returned to the compressor suction port, the separated refrigerant passes through the first four-way valve 3 (3D-3C, no power), enters the outdoor heat exchanger (the corresponding fan is running), and then passes through the liquid storage tank 5, and enters the two storages in two ways;

[0026] First tank: The refrigerant coming out of the accumulator passes through the second four-way valve 7 (7D-7E, energized), enters the first tank heat exchanger 11 (the corresponding fan does not rotate), then passes through the first expansion valve 9 (fully open), and passes through the second four-way valve 7 (7C-7S, energized);

[0027] Second reservoir: the refrigerant coming out of the liquid storage device passes through the third four-way valve 8 (8D-8C, no power), then passes through the second expansion valve 10 for throttling, enters the second reservoir heat exchanger 12 (the corresponding fan is running), and passes through the third four-way valve 8 (8E-8S, no power);

[0028] The refrigerants from the first and second refrigerants are mixed, enter the first four-way valve 3 (3E-3S), pass through the gas-liquid separator 6, and return to the compressor 1.

[0029] 3. When the double storage is in refrigeration mode and the second storage is defrosting

[0030] The refrigerant discharged from the compressor 1 passes through the oil separator 2, the oil is separated and returned to the suction port of the compressor 1. The separated refrigerant passes through the first four-way valve 3 (3D-3C, no power), enters the outdoor heat exchanger (the corresponding fan is running), and then passes through the liquid storage tank 5, and enters the two storages in two ways;

[0031] First reservoir: the refrigerant coming out of the accumulator passes through the second four-way valve 7 (7D-7C, no power), then throttles through the first expansion valve 9, enters the first reservoir heat exchanger 11 (the corresponding fan is running), and passes through the second four-way valve 7 (7E-7S, no power);

[0032] Second tank: The refrigerant coming out of the accumulator passes through the third four-way valve 8 (8D-8E, powered on), enters the second tank heat exchanger 12 (the corresponding fan does not rotate), then passes through the second expansion valve 10 (fully open), and passes through the third four-way valve 8 (8C-8S, not powered on);

[0033] The refrigerants from the first and second refrigerants are mixed, enter the first four-way valve 3 (3E-3S), pass through the gas-liquid separator 6, and return to the compressor 1.

[0034] 4. When the double warehouse is drying

[0035] The refrigerant discharged from the compressor 1 passes through the oil separator 2, the oil is separated and returned to the suction port of the compressor 1. The separated refrigerant passes through the first four-way valve 3 (3D-3E, powered on) and enters the two storages in two ways.

[0036] First tank: The refrigerant coming out of the first four-way valve 3 passes through the second four-way valve 7 (7S-7E, no power), enters the first tank heat exchanger 11 (the corresponding fan is running), and then passes through the first expansion valve 9 for throttling, and passes through the second four-way valve 7 (7C-7D, no power)

[0037] Second tank: The refrigerant coming out of the first four-way valve 3 passes through the third four-way valve 8 (8S-8E, no power), enters the second tank heat exchanger 12 (the corresponding fan is running), and then passes through the second expansion valve 10 for throttling, and passes through the third four-way valve 8 (8C-8D, no power)

[0038] After the refrigerants from the first and second refrigerants are mixed, they enter the first four-way valve 3 (3E-3S), pass through the liquid storage tank 5, enter the outdoor heat exchanger 4, pass through the first four-way valve 3 (3C-3S), and then pass through the gas-liquid separator 6 and return to the compressor 1.

[0039] It can perform four working modes: double-storage refrigeration and freezing, double-storage refrigeration and freezing with defrosting of the first warehouse, double-storage refrigeration and freezing with defrosting of the second warehouse, and double-storage drying. It uses one system to meet the needs of two refrigeration and freezing warehouses, adopts four-way valve reverse defrosting and electronic expansion valve to control flow, and defrosts quickly and consumes little energy. It also takes into account the ability of heat pump drying, and can provide heat pump drying function for places where drying is needed.

[0040] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A new type of one-to-two freezing, refrigeration and drying system, characterized by: It includes a compressor, an outdoor heat exchanger, a first reservoir heat exchanger, and a second reservoir heat exchanger. The first reservoir heat exchanger is arranged in the first reservoir, and the second reservoir heat exchanger is arranged in the second reservoir. The air outlet of the compressor is connected to an oil separator, and the air output end of the oil separator is connected to the D port of the first four-way valve. The C port of the first four-way valve is connected to the first medium port of the outdoor heat exchanger, and the second medium port of the outdoor heat exchanger is connected to the first port of the liquid reservoir. The second port of the liquid reservoir is connected in parallel to the D port of the second four-way valve and the D port of the third four-way valve. The C port of the second four-way valve is connected to the first expansion valve and then to the The first port of the first storage heat exchanger, the second port of the first storage heat exchanger is connected to the E port of the second four-way valve, the S port of the second four-way valve is connected to the E port of the first four-way valve through a pipeline, the C port of the third four-way valve is connected to the second expansion valve and then connected to the first port of the second storage heat exchanger, the second port of the second storage heat exchanger is connected to the E port of the third four-way valve, the S port of the third four-way valve is connected to the E port of the first four-way valve through a pipeline, the S port of the first four-way valve is connected to the inlet of the gas-liquid separator through a pipeline, and the outlet of the gas-liquid separator is connected to the suction port of the compressor.

2. A novel one-to-two freezing, refrigeration and drying system as claimed in claim 1, characterized in that: The oil output end of the oil separator is connected to the suction port of the compressor.

3. A novel one-to-two freezing, refrigerating and drying system as claimed in claim 1, characterized in that: The second four-way valve and the first expansion valve are arranged in the first reservoir.

4. A novel one-to-two freezing, refrigeration and drying system as claimed in claim 1, characterized in that: The third four-way valve and the second expansion valve are arranged in the second reservoir.

5. A novel one-to-two freezing, refrigeration and drying system as claimed in claim 1, characterized in that: The outdoor heat exchanger, the first heat exchanger, and the second heat exchanger are all provided with corresponding fans.

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