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

Abstract

The utility model provides an ice source and low-temperature air source heat pump combined energy supply system based on a halogenated hydrocarbon refrigerant, which relates to the technical field of heat pumps and 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 halogenated hydrocarbon refrigerant, the operation cost is low, and the effect is obvious.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, 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, among which,

[0003] A water-source heat pump system utilizes groundwater as a heat source or sink. This typically involves using the thermal energy in groundwater to heat or cool a building. An air-source heat pump system utilizes heat from the air for heating or cooling, offering high efficiency and environmental benefits. In winter, the system absorbs heat from the outdoor air, raising its temperature and transferring it indoors for heating. In summer, the system reverses the cycle to remove heat from the indoor space, achieving a cooling effect.

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

[0005] 1. Water-source heat pump system: The collection of underground energy is a critical step in the development and utilization of geothermal energy. The rationality of its development and utilization is particularly important, directly impacting the surrounding ecological environment. In northern regions, when the operating hours of heating and cooling differ significantly, the thermal balance of the ground can fluctuate significantly over time. Geothermal energy can only extract sensible heat from water, requiring a large amount of water, making it impractical 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 used solely for producing ice cubes or ice flakes. The operating principle of an ice maker is that a compressor compresses the refrigerant into a high-temperature, high-pressure gas. This gas is then cooled through a condenser, dissipated, and turned into a high-pressure liquid. The gas is then reduced in pressure through an expansion valve to a low-temperature, low-pressure liquid. Finally, the evaporator absorbs heat, cooling the water and solidifying it into ice cubes or ice flakes. This process utilizes the refrigerant's circulating flow, through processes such as evaporation, compression, condensation, and expansion, to remove heat from the freezer compartment, lowering the temperature inside to below freezing, thereby forming ice cubes or frozen food. An ice maker typically includes components such as a compressor, condenser, evaporator, and 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 wasted. The refrigerant at the refrigeration heat absorption end evaporates and absorbs heat indirectly through the secondary refrigerant. Utility Model Content

[0009] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a combined energy supply system of an ice source and a low-temperature air source heat pump based on a halogenated hydrocarbon refrigerant, which has a simple structure, is easy to operate, and is quick and convenient to install.

[0010] To achieve the above purpose, 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 meets national standards.

[0014] Preferably, the hot and cold 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.

[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] This utility model provides a combined energy supply system for an ice source and low-temperature air source heat pump based on a halogenated hydrocarbon refrigerant. The system comprises a dual-heating and cooling pump subsystem, an ice mold subsystem, and a fin-tube heat exchanger subsystem. The dual-heating and cooling pump subsystem has two ends connected to the user's water supply and return circuits, respectively. The dual-heating and cooling pump subsystem has two ends connected to one side of the ice mold subsystem and one end of the fin-tube heat exchanger subsystem, respectively. 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. This utility model has a simple structure, is easy to operate, and is quick and convenient to install. Furthermore, the system utilizes direct cooling, resulting in low operating costs and significant efficiency. 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 following briefly introduces the drawings required for use in the embodiments. 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 any creative work.

[0020] Figure 1 Detailed schematic diagram of the device provided in an embodiment of the present utility model.

[0021] Description of reference numerals:

[0022] 1-cold and hot dual heat pump subsystem, 2-ice mold subsystem, 3-finned 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 embodiments described 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 making creative efforts 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 implementation methods.

[0025] Figure 1 A schematic diagram of the details of the device provided in the embodiment of the present utility model is shown as follows: Figure 1As shown, the utility model 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-heating and cooling pump subsystem 1 are connected to the user's water supply and return circuits, respectively. The two ends of the other side of the dual-heating and cooling pump subsystem 1 are connected to one side of the ice mold subsystem 2 and one end of the fin-tube heat exchanger subsystem 3, respectively. 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-heating and cooling 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 dual-heating pump subsystem 1 includes a condenser 11 and a compressor 12. The two ends of one side of the condenser 11 are connected to the water supply circuit and the return circuit, respectively. The two ends of the other side of the condenser 11 are connected to the ice mold subsystem 2 and one end of the compressor 12, respectively. The other end of the compressor 12 is connected to one end of the condenser's internal expansion valve 14 and one end of the fin-tube heat exchanger subsystem 3, respectively. The other end of the condenser's 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 connected to one end of the other side of the condenser 11 via 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 pipe between the other end of the dual-heating pump subsystem 1 and one end of the fin-tube heat exchanger subsystem 3. Figure 1 Where T1 is the outlet temperature during unit operation, T2 is the return water temperature during unit operation, T3 is the refrigerant outlet temperature of the ice-making system, which is also the outlet temperature on the other side of the unit, T4 is the outlet temperature of the ice-making system, which is also the inlet temperature of the fin heat exchange system, and T5 is the outlet temperature of the fin heat exchange system, which is also the inlet temperature on the other side of the unit. For example, a filter 13 is provided on the pipeline between the heat exchanger subsystem 3 and the dual-heating and cooling pump subsystem 1, to filter the medium in the pipeline.

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

[0029] The heat generated by the unit during heating primarily 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 flows to the fin heat exchanger unit, where it absorbs heat from the air, raising the operating medium temperature. The heat pump system then transfers this heat to its users, completing the operation of the entire system.

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

[0031] Ice-making systems operate primarily based on a thermodynamic cycle, using a refrigerant (such as Freon) to achieve cooling. Evaporation: The refrigerant evaporates in the evaporator, absorbing heat from the surrounding environment and lowering the temperature. Refrigerant circulation: The refrigerant circulates through the system, absorbing heat and dissipating it, producing ice. (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, such as R22, R123a, R134a, and R410a) have low evaporation temperatures and excellent thermophysical properties. When evaporating at low temperatures, they can effectively absorb large amounts of heat. In ice-making systems, the choice of refrigerant directly affects the overall efficiency and ice-making results of the system.

[0034] Furthermore, 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 form and is reduced in pressure by the expansion valve 4, transforming it into a low-temperature, low-pressure liquid refrigerant. As the liquid refrigerant flows into the evaporator, it immediately absorbs heat from the surrounding environment (water or other liquid) due to the higher temperature, causing it to evaporate into gas.

[0037] Freezing effect: During the heat absorption process, the temperature of the surrounding environment drops, prompting 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 refrigerant circulation process of this embodiment is as follows:

[0039] The refrigerant circulates in the system, which is a key step in achieving the cooling 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, turning it into a high-temperature, high-pressure gas.

[0041] Heat Dissipation: The compressed, high-temperature, high-pressure gas passes through the condenser 11, releasing its heat. The condenser cools the refrigerant gas to a liquid state and transfers the remaining heat to the supply and return water circuits, providing the heat required by the user.

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

[0043] This 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] Throughout the entire process, the system must maintain good operating conditions to ensure ice making efficiency and effective heat recovery from the air heat pump:

[0047] Temperature and pressure monitoring: The system monitors 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 cooling effect and energy efficiency ratio.

[0048] By achieving efficient refrigerant circulation and dynamic heat exchange, the ice-making system of this embodiment not only efficiently completes the water freezing process but also provides a stable cooling source for the subsequent heat pump system, ensuring efficient energy utilization and overall system operational efficiency. This design concept holds great potential for the application of a combined energy supply system using a halogenated hydrocarbon refrigerant, ice source, and low-temperature air-source heat pump.

[0049] The beneficial effects of the utility model are as follows:

[0050] (1) The advantages of the heat pump system of the present invention are its simple structure, easy operation, quick and convenient installation, and the medium used in the system is Freon, which has low operating costs and obvious effects. Freon is a fluorinated carbon compound commonly used as a refrigerant. Its chemical properties are stable and it is not easy to volatilize. It performs well in conventional refrigeration systems and can operate over 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. Compared with the ice pool, the labor cost of producing ice is low, and the present invention is simple to operate and easy to construct.

[0052] (3) This utility model replaces the air source heat pump system with a fin heat exchanger + fan. Its principle is simple, construction is convenient, and the land area is easy to choose. It has outstanding advantages in areas 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] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed 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 dual-heating and cooling pump subsystem includes a condenser, an internal expansion valve in 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 in 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 in the condenser is connected to the ice mold subsystem.

4. The energy supply system of the ice source and low-temperature air source heat pump combined with the halogenated hydrocarbon refrigerant 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; 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 energy supply system of ice source and low-temperature air source heat pump combined with halogenated hydrocarbon refrigerant according to claim 3, characterized in that: A fan is further provided on the 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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