Ice source heat pump and low-environment-temperature air source heat pump coupling energy supply system

Abstract

The invention provides an ice source heat pump and low-environment-temperature air source heat pump coupling energy supply system, and relates to the technical field of heat pump systems, the ice source heat pump and low-environment-temperature air source heat pump coupling energy supply system comprises a cold and hot dual-system heat pump, a first ice pool and a finned tube heat exchanger; the heat release side of the cold and hot dual-system heat pump is connected with a water supply pipeline on the user side and a water return pipeline on the user side. One end of the heat absorption side of the cold and hot dual-system heat pump is connected with one end of the first ice pool and one end of the finned tube heat exchanger. The other end of the heat absorption side of the cold and hot dual-system heat pump is connected with the other end of the finned tube heat exchanger; and a cold carrying medium on the heat absorption side of the cold and hot dual-system heat pump is a solution. Through research on each single heat pump system and an ice maker single system, the purposes of integrating heating and ice making and improving the energy efficiency of the unit are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pump systems, and in particular to an energy supply system coupled with an ice source heat pump and a low ambient temperature air source heat pump. Background Art

[0002] At present, traditional heat pump systems include water-source heat pump systems and air-source heat pump systems.

[0003] A water-source heat pump system is a heat pump system that uses groundwater as a heat source or heat sink. It usually refers to using the heat energy in groundwater to heat or cool a building. An air-source heat pump system uses the heat in the air for heating or cooling, and is highly efficient and environmentally friendly. In winter, the system can absorb heat from the outdoor air, heat it up, and transport it to the indoor heating; in summer, the system can discharge the indoor heat by reversing the cycle to achieve a cooling effect.

[0004] The defects of traditional heat pump systems are as follows:

[0005] 1. Water-source heat pump system: In the process of geothermal energy development and utilization, the collection of underground energy is a key link. The rationality of development and utilization is particularly important and directly affects the surrounding ecological environment. When the operating time of heating and cooling in northern regions is quite different, the heat and cold balance of the stratum will change greatly over time. Geothermal energy can only extract sensible heat from water, and the amount of water required to be extracted is large, so it cannot be used in water-scarce areas.

[0006] 2. Air source heat pump system: The efficiency of the air source heat pump is affected by the ambient temperature. In a low temperature environment, the heating capacity of the heat pump decreases and the power consumption will also increase.

[0007] 3. Ice maker: An ice maker is a device that is used solely for producing ice cubes or ice flakes. The working principle of an ice maker is to compress the refrigerant into a high-temperature and high-pressure gas through a compressor, then cool it down into a high-pressure liquid through a condenser, and then reduce the pressure into a low-temperature and low-pressure liquid through an expansion valve, and finally absorb heat in the evaporator to cool the water and solidify it into ice cubes or ice flakes. It uses the circulation of refrigerant to remove heat from the freezer through processes such as evaporation, compression, condensation and expansion, so as to reduce the temperature in the freezer to below the freezing point, thereby forming ice cubes or frozen food. Usually, an ice maker includes components such as a compressor, a condenser, an evaporator and an expansion valve, which work together to complete the refrigeration cycle.

[0008] Traditional ice makers can only use one end of the cold source, and the discharged heat is not used and is wasted. Summary of the invention

[0009] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide an energy supply system of an ice source heat pump and a low ambient temperature air source heat pump coupling, which solves the problem of an integrated heating and ice-making device and improves the energy efficiency of the unit.

[0010] To achieve the above object, the present invention provides the following solutions:

[0011] An ice source heat pump and a low ambient temperature air source heat pump coupled energy supply system, comprising: a cold and hot dual heat pump, a first ice pool and a fin tube heat exchanger;

[0012] The heat release side of the dual-cold and hot heat pump is respectively connected to the water supply pipeline on the user side and the return pipeline on the user side; one end of the heat absorption side of the dual-cold and hot heat pump is respectively connected to the first ice pool and one end of the fin-tube heat exchanger; the other end of the heat absorption side of the dual-cold and hot heat pump is connected to the other end of the fin-tube heat exchanger; the cooling medium on the heat absorption side of the dual-cold and hot heat pump is a solution.

[0013] Preferably, the solution is any one of ethylene glycol solution, calcium chloride solution and sodium chloride solution.

[0014] Preferably, it further comprises a second ice pool;

[0015] The second ice pool is connected to the first ice pool and the other end of the fin-tube heat exchanger respectively.

[0016] Preferably, the dual-cooling heat pump comprises: a condenser, an evaporator, a compressor, a gas-liquid separator, a liquid storage tank and an expansion valve;

[0017] The two ends of one side of the condenser are respectively connected to the water supply pipeline and the return pipeline on the user side; one end of the other side of the condenser is connected to one end of one side of the evaporator through the compressor and the gas-liquid separator in sequence; the other end of the other side of the condenser is connected to the other end of one side of the evaporator through the liquid storage tank and the expansion valve in sequence; the two ends of the other side of the evaporator are respectively connected to the first ice pool and one end of the fin-tube heat exchanger.

[0018] Preferably, one end of the other side of the evaporator is connected to one end of the first ice pool through a first circulation pump and a first butterfly valve, and one end of the other side of the evaporator is also connected to the other end of the fin-tube heat exchanger through a first circulation pump, a second butterfly valve, a third butterfly valve and a second circulation pump; the other end of the other side of the evaporator is connected to the other end of the fin-tube heat exchanger, and a fan is also provided on the fin-tube heat exchanger.

[0019] Preferably, the other end of the first ice pool is connected to the connecting pipeline between one end on the other side of the evaporator and the other end of the fin-tube heat exchanger through a fourth butterfly valve; the second ice pool is connected to both ends of the third butterfly valve through a fifth butterfly valve and a sixth butterfly valve.

[0020] Preferably, ice-making molds are provided in the first ice pool and the second ice pool.

[0021] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0022] The present invention provides an energy supply system of coupling an ice source heat pump and a low ambient temperature air source heat pump, comprising: a cold and hot dual heat pump, a first ice pool and a fin tube heat exchanger; the heat release side of the cold and hot dual heat pump is respectively connected to the water supply pipeline on the user side and the return water pipeline on the user side; one end of the heat absorption side of the cold and hot dual heat pump is respectively connected to the first ice pool and one end of the fin tube heat exchanger; the other end of the heat absorption side of the cold and hot dual heat pump is connected to the other end of the fin tube heat exchanger; the cold medium on the heat absorption side of the cold and hot dual heat pump is a solution. The present invention achieves the purpose of heating and ice making integrated device and improving the energy efficiency of the unit by studying each monomer heat pump system and ice making machine monomer system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 A schematic diagram of the detailed structural components of the device provided in an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 1. Hot and cold dual heat pump; 101. Condenser; 102. Evaporator; 103. Compressor; 104. Gas-liquid separator; 105. Liquid storage tank; 106. Expansion valve; 2. First ice pool; 3. Fin-tube heat exchanger; 4. Second ice pool; 5. First circulation pump; 6. First butterfly valve; 7. Second butterfly valve; 8. Third butterfly valve; 9. Fourth butterfly valve; 10. Fifth butterfly valve; 11. Sixth butterfly valve; 12. Second circulation pump; 13. Fan; 14. Cooling medium on the heat absorption side. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Figure 1 A schematic diagram of the detailed structure of the device provided in the embodiment of the present invention is shown in FIG. Figure 1 As shown, the present invention provides an ice source heat pump and a low ambient temperature air source heat pump coupling energy supply system, comprising: a cold and hot dual heat pump 1, a first ice pool 2 and a fin tube heat exchanger 3; the heat release side of the cold and hot dual heat pump 1 is respectively connected to the water supply pipeline on the user side and the return water pipeline on the user side; one end of the heat absorption side of the cold and hot dual heat pump 1 is respectively connected to the first ice pool 2 and one end of the fin tube heat exchanger 3; the other end of the heat absorption side of the cold and hot dual heat pump 1 is connected to the other end of the fin tube heat exchanger 3; the cold medium 14 on the heat absorption side of the cold and hot dual heat pump 1 is a solution. Exemplarily, the solution is any one of ethylene glycol solution, calcium chloride solution and sodium chloride solution.

[0030] Preferably, it further comprises a second ice pool 4; the second ice pool 4 is respectively connected to the first ice pool 2 and the other end of the fin-tube heat exchanger 3. The dual-cooling heat pump 1 comprises: a condenser 101, an evaporator 102, a compressor 103, a gas-liquid separator 104, a liquid storage tank 105 and an expansion valve 106; the two ends of one side of the condenser 101 are respectively connected to the water supply pipeline and the return pipeline of the user side; one end of the other side of the condenser 101 is connected to one end of one side of the evaporator 102 through the compressor 103 and the gas-liquid separator 104 in sequence; the other end of the other side of the condenser 101 is connected to the other end of one side of the evaporator 102 through the liquid storage tank 105 and the expansion valve 106 in sequence; the two ends of the other side of the evaporator 102 are respectively connected to the first ice pool 2 and one end of the fin-tube heat exchanger 3. One end of the other side of the evaporator 102 is connected to one end of the first ice pool 2 through the first circulation pump 5 and the first butterfly valve 6, and one end of the other side of the evaporator 102 is also connected to the other end of the fin-tube heat exchanger 3 through the first circulation pump 5, the second butterfly valve 7, the third butterfly valve 8 and the second circulation pump 12; the other end of the other side of the evaporator 102 is connected to the other end of the fin-tube heat exchanger 3, and the fin-tube heat exchanger is also provided with a fan 13. The other end of the first ice pool 2 is connected to the connecting pipeline between one end of the other side of the evaporator 102 and the other end of the fin-tube heat exchanger 3 through the fourth butterfly valve 9; the second ice pool 4 is connected to both ends of the third butterfly valve 8 through the fifth butterfly valve 10 and the sixth butterfly valve 11. Ice-making ice molds are provided in both the first ice pool 2 and the second ice pool 4.

[0031] Optionally, the function of the fan in this embodiment is: when the low ambient temperature air source heat pump system is running, the fan can quickly discharge the cold exchanged by the fin heat exchange tube.

[0032] Furthermore, the functions of each butterfly valve in this embodiment are:

[0033] The first butterfly valve 6 and the fourth butterfly valve 9 have the function of controlling the operation of the first ice-making system.

[0034] The fifth butterfly valve 10 and the sixth butterfly valve 11 have the following functions: to control the operation of the second ice-making system.

[0035] Function of the second butterfly valve 7: If the first ice-making system fails, the butterfly valve 7 can be opened, and the butterfly valves 6 and 9 can be closed, and the second ice-making system can operate normally, and the system can also operate normally.

[0036] Function of the third butterfly valve 8: If the second ice-making system fails, the butterfly valve 8 can be opened, and the butterfly valves 10 and 11 can be closed, so that the first ice-making system can operate normally and the system can also operate normally.

[0037] When the second butterfly valve 7 and the third butterfly valve 8 are closed at the same time, the first butterfly valve 6, the fourth butterfly valve 9, the fifth butterfly valve 10 and the sixth butterfly valve 11 are opened, and the first and second ice-making systems are operated at the same time.

[0038] Furthermore, the functions of each circulating pump in this embodiment are:

[0039] Specifically, under the condition of meeting the heating demand of the system, the evaporator 102 is well matched with the corresponding compressor 103 in the ice-making stage, and a set of fin heat exchangers (similar to the evaporator 102 of the air energy unit) is added, which can significantly improve the system COP.

[0040] Specifically, Figure 1 The temperatures in are explained as follows:

[0041] T1 and T2 are the temperatures on the condensing side of the heat pump system, and T3 and T5 are the temperatures on the evaporator side of the heat pump system.

[0042] T1: When the heat pump heating system is running, the outlet temperature of the liquid supplied to the user side.

[0043] T2: When the heat pump heating system is running, the liquid inlet temperature when it returns to the system from the user side.

[0044] T3: It is both the outlet liquid temperature of the evaporator side of the heat pump system and the inlet liquid temperature of the ice making system.

[0045] T4: It is both the outlet temperature of the ice making system and the inlet temperature of the air source system.

[0046] T5: It is both the outlet temperature of the air source system and the inlet temperature of the heat pump system.

[0047] Optionally, the heating system principle of this embodiment is as follows:

[0048] The latent heat and sensible heat released by preparing room temperature tap water into -20°C ice on the ice-making side are transported to the evaporator 102 side of the heat pump. After being absorbed by the heat carrier medium in the evaporator and transported to the condenser side of the heat pump, the heat is released through the condenser to supply heating to the terminal heating users, thereby realizing winter heating and the preparation of domestic hot water.

[0049] Furthermore, the ice making system principle of this embodiment is as follows:

[0050] After the heating circulating hot water releases heat to the end user through the heat dissipation equipment of the terminal heating user, it continues to absorb the heat in the heat carrier medium in the condenser through the condenser end. After releasing the heat, the heat carrier medium enters the evaporator end of the heat pump to absorb the heat in the ice-making agent, and then circulates through the ice-making system into the ice-making tank to absorb the latent heat and sensible heat in the water or ice, thereby realizing low-temperature heating and ice-making.

[0051] Furthermore, the principle of the fin heat exchanger system of this embodiment is as follows:

[0052] The heat in the air is quickly exchanged with the low-temperature air in the heat exchanger, and the purpose of improving the system COP is achieved based on low-carbon heat exchange that protects the environment.

[0053] Specifically, this embodiment can simultaneously supply heating or domestic hot water (45 / 40) and commercial ice (-15°C) to the outside; while satisfying the system heating requirements, a relatively high efficiency is maintained throughout the ice-making and heating process. In addition, a set of fin heat exchangers (similar to the evaporator of an air energy unit) is designed outside the heat pump unit, which can increase the system heating demand by absorbing heat from the air, and at the same time improve the COP of the entire system.

[0054] Normal temperature tap water at around 20℃ enters the ice making pool system, where it continuously absorbs its sensible heat and latent heat through the evaporator end to make saleable ice cubes at around -15℃.

[0055] The beneficial effects of the present invention are as follows:

[0056] (1) The heat pump of the present invention is a highly efficient mechanical device that can obtain low-grade heat energy from water or air in nature and provide high-grade heat energy that can be used by people through electric drive. The heat pump consumes a small amount of electric energy and can provide a large amount of heat energy, which can effectively make full use of the low-grade heat energy that is difficult to use and achieve the purpose of energy saving.

[0057] (2) The present invention achieves the purpose of an integrated heating and ice-making device and improving the energy efficiency of the unit by studying each unit heat pump system and the ice-making machine unit system.

[0058] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0059] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An ice source heat pump and a low ambient temperature air source heat pump coupled energy supply system, characterized in that: include: Hot and cold dual heat pump, first ice tank and fin-tube heat exchanger; The heat release side of the dual-heating heat pump is respectively connected to the water supply pipeline on the user side and the water return pipeline on the user side; One end of the heat absorption side of the dual-cold and hot heat pump is connected to one end of the first ice pool and the fin-tube heat exchanger respectively; the other end of the heat absorption side of the dual-cold and hot heat pump is connected to the other end of the fin-tube heat exchanger; the cooling medium on the heat absorption side of the dual-cold and hot heat pump is a solution.

2. The ice source heat pump and low ambient temperature air source heat pump coupled energy supply system according to claim 1 is characterized in that: The solution is any one of ethylene glycol solution, calcium chloride solution and sodium chloride solution.

3. The ice source heat pump and low ambient temperature air source heat pump coupled energy supply system according to claim 1 is characterized in that: Also included is a second ice pond; The second ice pool is connected to the first ice pool and the other end of the fin-tube heat exchanger respectively.

4. The ice source heat pump and low ambient temperature air source heat pump coupled energy supply system according to claim 3 is characterized in that: The dual-heating heat pump comprises: a condenser, an evaporator, a compressor, a gas-liquid separator, a liquid storage tank and an expansion valve; The two ends of one side of the condenser are respectively connected to the water supply pipeline and the return pipeline on the user side; one end of the other side of the condenser is connected to one end of one side of the evaporator through the compressor and the gas-liquid separator in sequence; the other end of the other side of the condenser is connected to the other end of one side of the evaporator through the liquid storage tank and the expansion valve in sequence; the two ends of the other side of the evaporator are respectively connected to the first ice pool and one end of the fin-tube heat exchanger.

5. The ice source heat pump and low ambient temperature air source heat pump coupled energy supply system according to claim 4 is characterized in that: One end of the other side of the evaporator is connected to one end of the first ice pool through a first circulation pump and a first butterfly valve, and one end of the other side of the evaporator is also connected to the other end of the fin-tube heat exchanger through a first circulation pump, a second butterfly valve, a third butterfly valve and a second circulation pump; a fan is also provided on the connecting pipeline between the other end of the other side of the evaporator and the other end of the fin-tube heat exchanger.

6. The ice source heat pump and low ambient temperature air source heat pump coupled energy supply system according to claim 5 is characterized in that: The other end of the first ice pool is connected to the connecting pipeline between one end on the other side of the evaporator and the other end of the fin-tube heat exchanger through a fourth butterfly valve; the second ice pool is connected to both ends of the third butterfly valve through a fifth butterfly valve and a sixth butterfly valve.

7. The ice source heat pump and low ambient temperature air source heat pump coupled energy supply system according to claim 5, characterized in that: Ice-making molds are arranged in the first ice pool and the second ice pool.

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