Ice source and low-temperature air source heat pump combined energy supply system based on halogenated hydrocarbon refrigerant

Abstract

The invention provides an ice source and low-temperature air source heat pump combined energy supply system based on a halogenated hydrocarbon refrigerant, and relates to the technical field of heat pumps, the ice source and low-temperature air source heat pump combined energy supply system comprises a cold and hot dual-system heat pump subsystem, an ice mold subsystem and a finned tube heat exchanger subsystem; the two ends of one side of the cold and hot dual-system heat pump subsystem are connected with a water supply loop and a water return loop on the user side respectively. Two ends of the other side of the cold and hot dual-system heat pump subsystem are respectively connected with one side of the ice mold subsystem and one end of the finned tube heat exchanger subsystem; the other side of the ice mold subsystem is also connected with the other end of the finned tube heat exchanger subsystem; and an ice-making medium on the other side of the cold and hot dual-heating heat pump subsystem is a halogenated hydrocarbon refrigerant. The system is simple in structure, easy to operate and rapid and convenient to install, the medium adopted by the system is the halogenated hydrocarbon refrigerant, the operation cost is low, and the effect is obvious.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pumps, and in particular to an ice source and low-temperature air source heat pump combined energy supply system based on halogenated hydrocarbon refrigerants. 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 machines can only use one cold source, and the discharged heat is not used and wasted. The refrigerant at the refrigeration heat absorption end evaporates and absorbs heat indirectly through the secondary refrigerant. 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 ice source and low-temperature air source heat pump combined energy supply system based on halogenated hydrocarbon refrigerants, which has a simple structure, is easy to operate, and is quick and convenient to install.

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

[0011] A combined energy supply system of an ice source and a low-temperature air source heat pump based on a halogenated hydrocarbon refrigerant, comprising: a cold and hot dual heat pump subsystem, an ice mold subsystem and a fin tube heat exchanger subsystem;

[0012] The two ends of one side of the dual-heating and cooling pump subsystem are respectively connected to the water supply circuit and the return circuit on the user side; the two ends of the other side of the dual-heating and cooling pump subsystem are respectively connected to one side of the ice mold subsystem and one end of the fin-tube heat exchanger subsystem; the other side of the ice mold subsystem is also connected to the other end of the fin-tube heat exchanger subsystem; the ice-making medium on the other side of the dual-heating and cooling pump subsystem is a halogenated hydrocarbon refrigerant.

[0013] Preferably, the halogenated hydrocarbon refrigerant is Freon; the Freon includes R22, R123a, R134a, R410a or any refrigerant that complies with national standards.

[0014] Preferably, the dual-heating heating pump subsystem includes a condenser, an internal expansion valve of the condenser and a compressor; the two ends of one side of the condenser are respectively connected to the water supply circuit and the return circuit; the two ends of the other side of the condenser are respectively connected to one end of the internal expansion valve of the condenser and one end of the compressor; the other end of the compressor is connected to one end of the fin-tube heat exchanger subsystem; the other end of the internal expansion valve of the condenser is connected to the ice mold subsystem.

[0015] Preferably, both ends of one side of the ice mold subsystem are connected to one end of the other side of the condenser through an expansion valve respectively; and both ends of the other side of the ice mold subsystem are connected to the other end of the fin-tube heat exchanger subsystem.

[0016] Preferably, a fan is further provided on the connecting pipeline between one end of the other side of the dual-heating and cooling pump subsystem and one end of the fin-tube heat exchanger subsystem.

[0017] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0018] The present invention provides an ice source and low-temperature air source heat pump combined energy supply system based on halogenated hydrocarbon refrigerant, comprising: a cold and hot dual heating pump subsystem, an ice mold subsystem and a fin tube heat exchanger subsystem; the two ends of one side of the cold and hot dual heating pump subsystem are respectively connected to the water supply circuit and the return circuit of the user side; the two ends of the other side of the cold and hot dual heating pump subsystem are respectively connected to one side of the ice mold subsystem and one end of the fin tube heat exchanger subsystem; the other side of the ice mold subsystem is also connected to the other end of the fin tube heat exchanger subsystem; the ice making medium on the other side of the cold and hot dual heating pump subsystem is a halogenated hydrocarbon refrigerant. The present invention has a simple structure, is easy to operate, is quick and convenient to install, and the system adopts direct cooling, has low operating costs, and has obvious effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 A detailed schematic diagram of a device provided in an embodiment of the present invention.

[0021] Description of reference numerals:

[0022] 1-cold and hot dual heat pump subsystem, 2-ice mold subsystem, 3-fin tube heat exchanger subsystem, 4-expansion valve, 5-fan, 6-freon, 11-condenser, 12-compressor, 13-filter, 14-condenser internal expansion valve. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] Figure 1 A detailed schematic diagram of the device provided in the embodiment of the present invention, such as Figure 1As shown, the present invention provides an ice source and low-temperature air source heat pump combined energy supply system based on halogenated hydrocarbon refrigerants, comprising: a cold and hot dual heat pump subsystem 1, an ice mold subsystem 2 and a fin tube heat exchanger subsystem 3;

[0026] The two ends of one side of the dual-cooling and heating pump subsystem 1 are respectively connected to the water supply circuit and the return circuit of the user side; the two ends of the other side of the dual-cooling and heating pump subsystem 1 are respectively connected to one side of the ice mold subsystem 2 and one end of the fin-tube heat exchanger subsystem 3; the other side of the ice mold subsystem 2 is also connected to the other end of the fin-tube heat exchanger subsystem 3; the ice-making medium on the other side of the dual-cooling and heating pump subsystem 1 is Freon 6. Exemplarily, the Freon 6 is any one of R22, R123a or R410a.

[0027] like Figure 1 As shown, the cold and hot dual heating pump subsystem 1 includes a condenser 11 and a compressor 12; the two ends of one side of the condenser 11 are respectively connected to the water supply circuit and the return circuit; the two ends of the other side of the condenser 11 are respectively connected to the ice mold subsystem 2 and one end of the compressor 12; the other end of the compressor 12 is respectively connected to one end of the condenser internal expansion valve 14 and one end of the fin tube heat exchanger subsystem 3. The other end of the condenser internal expansion valve 14 is connected to the ice mold subsystem 2; the two ends of one side of the ice mold subsystem 2 are respectively connected to one end of the other side of the condenser 11 through the expansion valve 4; the two ends of the other side of the ice mold subsystem 2 are both connected to the other end of the fin tube heat exchanger subsystem 3. A fan 5 is also provided on the connecting pipeline between one end of the other side of the cold and hot dual heating pump subsystem 1 and one end of the fin tube heat exchanger subsystem 3. Figure 1 T1 is the outlet temperature when the unit is running, T2 is the return water temperature when the unit is running, T3 is the refrigerant outlet temperature of the ice-making system and also the outlet temperature of the other side of the unit, T4 is the outlet temperature of the ice-making system and also the inlet temperature of the fin heat exchange system, and T5 is the outlet temperature of the fin heat exchange system and also the inlet temperature of the other side of the unit. For example, before passing through the fin-tube heat exchanger subsystem 3 for heat exchange and then entering the cold and hot dual heating pump subsystem 1, a filter 13 is also provided on the pipeline, which is used to filter the medium in the pipeline.

[0028] Specifically, the heating principle of the cold and hot dual heat pump subsystem in this embodiment is as follows:

[0029] The heat exchanged by the unit during heating mainly comes from the heat released during ice making and the heat exchanged between the fin heat exchanger and the air. The ice making system is equivalent to the evaporator of the heat pump system. After the ice making system is running, the circulating medium runs to the fin heat exchanger unit, absorbs heat from the air, and increases the operating medium temperature. The heat pump system then transmits the heat to its users to complete the operation of the entire system.

[0030] Optionally, the ice making system principle of this embodiment is as follows:

[0031] The principle of ice making system is mainly based on thermodynamic cycle, using refrigerant (such as Freon) to achieve refrigeration effect. Evaporation process: The refrigerant evaporates in the evaporator, absorbing heat from the surrounding environment, causing the temperature to drop. Refrigerant cycle: The refrigerant circulates in the system, absorbing heat and discharging it, thereby achieving the effect of ice production. (This process causes water or other liquids to freeze in the evaporator).

[0032] As an optional implementation, the selection and characteristics of the refrigerant in this embodiment are as follows:

[0033] Refrigerants (Freon is R22, R123a, R134a, R410a, etc.) have a low evaporation temperature and good thermophysical properties. When it evaporates under low temperature conditions, it can effectively absorb a large amount of heat. In the ice-making system, the choice of refrigerant directly affects the overall efficiency of the system and the ice-making effect.

[0034] Further, the evaporation process of this embodiment is as follows

[0035] In the ice making system, the refrigerant evaporates in the evaporator of the ice mold subsystem 2. The specific process is as follows:

[0036] Heat absorption: The refrigerant enters the evaporator in liquid state, and its pressure is reduced by the expansion valve 4, so that it is transformed into a low-temperature and low-pressure liquid refrigerant. When the liquid refrigerant flows into the evaporator, due to the high temperature of the surrounding environment (water or other liquids), the liquid refrigerant immediately absorbs the heat of the surrounding environment, causing the refrigerant to evaporate into gas.

[0037] Freezing effect: During the heat absorption process, the temperature of the surrounding environment decreases, prompting the water molecules to freeze. Through this unit, a temperature difference is formed, which enables the cooling effect to be achieved, causing the water to freeze in the ice mold.

[0038] Furthermore, the circulation process of the refrigerant in this embodiment is as follows:

[0039] The refrigerant circulates in the system, which is a key step in achieving the refrigeration effect:

[0040] Gas Compression: After evaporation, the refrigerant is converted into a low-temperature, low-pressure gas and is delivered to the compressor 12. In the compressor, the refrigerant gas is compressed, increasing its temperature and pressure, making it a high-temperature, high-pressure gas.

[0041] Heat discharge: The compressed high-temperature and high-pressure gas releases its heat through the condenser 11. The function of the condenser is to cool the refrigerant gas into liquid and transfer the remaining heat to the water supply circuit and the return water circuit to provide the heat required by the user.

[0042] Furthermore, the heat transfer process in the circulation system of this embodiment is as follows:

[0043] The circulation system effectively transfers the heat of the refrigerant to the surrounding environment:

[0044] Heat exchange with the surroundings: The liquid refrigerant cooled by the condenser flows into the ice mold system again, is converted into a low-temperature and low-pressure liquid through the expansion valve, and re-enters the evaporator to start a new cycle.

[0045] Furthermore, the feedback mechanism of the overall operation of this embodiment is as follows:

[0046] During the whole process, the system needs to maintain good operating condition to ensure ice making efficiency and effective recovery of air heat pump heat:

[0047] Temperature and pressure monitoring: The system monitors the temperature (such as T3, T4, etc.) and pressure in real time, and adjusts the position of the expansion valve and the working status of the compressor in time to achieve the best refrigeration effect and energy efficiency ratio.

[0048] The ice-making system of this embodiment not only efficiently completes the water freezing process by realizing effective circulation of refrigerant and dynamic exchange of heat, but also provides a stable cooling source for the subsequent heat pump system, ensuring efficient use of energy and the overall operating efficiency of the system. This design concept makes the combined energy supply system of ice source and low-temperature air source heat pump based on halogenated hydrocarbon refrigerant have great application potential.

[0049] The beneficial effects of the present invention are as follows:

[0050] (1) The advantages of the heat pump system of the present invention are simple structure, easy operation, quick and convenient installation, and the medium used in the system is Freon, which has low operating cost and obvious effect. Freon is a fluorinated carbon compound, usually used as a refrigerant, with stable chemical properties and not easy to volatilize. It performs well in conventional refrigeration systems and can work in a wide temperature range. The present invention uses non-toxic and environmentally friendly Freon.

[0051] (2) The ice mold of the present invention can directly produce ice according to the market demand for ice, and the labor cost is lower than that of producing ice in an ice pool. In addition, the present invention is simple to operate and easy to construct.

[0052] (3) The present invention replaces the air source heat pump system with a fin heat exchanger + fan. The principle is simple, the construction is convenient, and the land area is easy to choose. It has outstanding advantages in places with limited land. The system has great technical advantages and obvious energy-saving and emission reduction effects.

[0053] 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.

[0054] 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. A combined energy supply system of an ice source and a low-temperature air source heat pump based on a halogenated hydrocarbon refrigerant, characterized in that: include: Hot and cold dual heat pump subsystem, ice mold subsystem and fin-tube heat exchanger subsystem; The two ends of one side of the dual-heating and cooling pump subsystem are respectively connected to the water supply circuit and the return circuit on the user side; the two ends of the other side of the dual-heating and cooling pump subsystem are respectively connected to one side of the ice mold subsystem and one end of the fin-tube heat exchanger subsystem; the other side of the ice mold subsystem is also connected to the other end of the fin-tube heat exchanger subsystem; the ice-making medium on the other side of the dual-heating and cooling pump subsystem is a halogenated hydrocarbon refrigerant.

2. The combined energy supply system of ice source and low-temperature air source heat pump based on halogenated hydrocarbon refrigerant according to claim 1 is characterized in that: The halogenated hydrocarbon refrigerant is Freon; the Freon includes any one of R22, R123a, R134a, and R410a.

3. The combined energy supply system of ice source and low-temperature air source heat pump based on halogenated hydrocarbon refrigerant according to claim 1 is characterized in that: The cold and hot dual heating pump subsystem includes a condenser, an internal expansion valve of the condenser and a compressor; the two ends of one side of the condenser are respectively connected to the water supply circuit and the return circuit; the two ends of the other side of the condenser are respectively connected to one end of the internal expansion valve of the condenser and one end of the compressor; the other end of the compressor is connected to one end of the fin tube heat exchanger subsystem; the other end of the internal expansion valve of the condenser is connected to the ice mold subsystem.

4. The ice source and low-temperature air source heat pump combined energy supply system based on halogenated hydrocarbon refrigerants according to claim 3 is characterized in that: Both ends of one side of the ice mold subsystem are connected to one end of the other side of the condenser through an expansion valve respectively; both ends of the other side of the ice mold subsystem are connected to the other end of the fin tube heat exchanger subsystem.

5. The combined energy supply system of ice source and low-temperature air source heat pump based on halogenated hydrocarbon refrigerant according to claim 3 is characterized in that: A fan is also provided on a connecting pipeline between one end of the other side of the cold and hot dual heating pump subsystem and one end of the fin-tube heat exchanger subsystem.

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