Special high-temperature hot water unit for aquaculture
The modular design of the air-source heat pump high-temperature hot water equipment solves the problems of environmental pollution and unstable temperature control caused by coal-fired boiler heating, and realizes efficient and energy-saving temperature management for aquaculture, thereby improving the economic benefits of aquaculture.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG CHUANGZHI THERMAL ENERGY EQUIP CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-05-29
AI Technical Summary
The current practice of using coal-fired boilers for heating in the aquaculture industry has resulted in serious environmental pollution, unstable temperature control, and high costs.
The air-source high-temperature hot water equipment includes components such as a compressor, gas-liquid storage tank, four-way valve, high-efficiency tank-type hot water heat exchanger, evaporator, filter, electronic expansion valve, solenoid valve, and high-temperature hot water pump, forming a multi-modal direct heating system. It achieves precise temperature control and energy efficiency optimization through temperature sensors and control systems.
This has resulted in reduced carbon emissions, lower operating costs, improved temperature control accuracy, stable aquaculture environment temperature, and enhanced economic benefits.
Smart Images

Figure CN224302326U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dryer technology, and in particular to a high-temperature hot water unit for aquaculture. Background Technology
[0002] With the rapid pace of industrialization, environmental pollution from various industries is becoming increasingly severe. In the livestock industry, most farms rely on coal-fired boilers to maintain constant temperatures. This presents uncontrollable risks, such as the dangers of manually adding coal to the boilers and the losses caused by temperature imbalances. This significantly increases the costs for livestock farmers. Summary of the Invention
[0003] The purpose of this invention is to address the aforementioned shortcomings in existing technologies by proposing an air-source high-temperature hot water device to replace existing coal-fired boilers and biomass pellet furnaces. This device aims to completely solve air pollution from the emission perspective, reduce carbon emissions, and improve absolute control over aquaculture temperature parameters, thereby achieving scientific aquaculture and saving labor costs. This new type of energy production equipment can greatly improve the economic benefits for farmers.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] The design includes a high-temperature hot water unit specifically for aquaculture, comprising a frame. The frame is characterized by having several pressure gauges distributed on its front side. The frame also contains a compressor, a gas-liquid storage tank, a four-way valve, a high-efficiency tank-type hot water heat exchanger, an evaporator, an evaporator fan, a filter, an electronic expansion valve, a solenoid valve, a high-temperature hot water pump, a compressor outlet, a heat exchanger inlet, a storage tank heat exchange inlet, a filter inlet, an evaporator inlet, a four-way valve inlet, a storage tank inlet, a compressor return port, a defrost inlet, a defrost connection pipe, and several other pipes.
[0006] The high-temperature hot water pump has an inlet on one side, and the pipes consist of the first pipe to the twentieth pipe.
[0007] The compressor's compression outlet is connected to the first port of the four-way valve via the eleventh pipe. The normally open port of the four-way valve is connected to the high-efficiency tank-type hot water heat exchanger via the twelfth pipe. The high-efficiency tank-type hot water heat exchanger is connected to the electronic expansion valve via the thirteenth pipe. The electronic expansion valve is connected to the filter via the fourteenth pipe. The filter is connected to the evaporator inlet of the evaporator via the fifteenth pipe. The evaporator is connected to the return pipe of the four-way valve via the sixteenth pipe. The four-way valve is connected to the storage tank inlet of the gas-liquid separator via the seventeenth pipe. The gas-liquid separator is connected to the compressor return port of the compressor via the eighteenth pipe. The outlet of the high-efficiency tank-type hot water heat exchanger is connected to a high-temperature hot water pump.
[0008] Preferably, the high-efficiency tank-type hot water heat exchanger has a refrigerant flow channel inside, which is connected to the normally open interface of the four-way valve through the twelfth pipe and to the electronic expansion valve through the thirteenth pipe. The high-efficiency tank-type hot water heat exchanger has a hot water circulation channel outside, which is connected to the water supply system of the aquaculture constant temperature room through a high-temperature hot water pump.
[0009] Preferably, the evaporator includes an evaporator inlet and an evaporator fan. The evaporator is connected to the return pipe of a four-way valve via a sixteenth pipe. The four-way valve is connected to a gas-liquid separator via a seventeenth pipe. The evaporator is connected to the high-pressure side of the compressor via a defrost valve inlet and a defrost access pipe.
[0010] Preferably, the gas-liquid separation tank is provided with multiple inlets, including a heat exchange inlet, an inlet, and a compressor return port. The gas-liquid separation tank is provided with a conduit, the two ends of which are respectively connected to the heat exchange inlet and the inlet. The gas-liquid separation tank is connected to the compressor return port of the compressor through an eighteenth pipe.
[0011] Preferably, the electronic expansion valve is connected to the filter via the fourteenth pipe, the electronic expansion valve is connected to the high-efficiency tank-type hot water heat exchanger via the thirteenth pipe, and is also connected to the evaporator via the fifteenth pipe.
[0012] Preferably, the solenoid valve is located between the compressor's unloading port and the evaporator, and is connected via a defrost valve inlet and a defrost access pipe.
[0013] Preferably, the high-temperature hot water pump is connected between the outlet of the high-efficiency tank-type hot water heat exchanger and the water supply system of the aquaculture constant temperature room.
[0014] Preferably, a temperature sensor is provided on the pipeline, and the temperature sensor is electrically connected to the temperature gauge of the control system.
[0015] The design scheme proposed in this utility model has the following beneficial effects in application:
[0016] 1. This high-temperature hot water unit for aquaculture adopts a multi-modal direct heating system. The overall inlet and outlet water temperatures are set. During operation, temperature sensors detect the outlet water temperature and activate all systems accordingly. When the temperature reaches the set value, each system stops individually. Simultaneously, the water temperature is monitored, and the system stops operating at reduced capacity when the energy efficiency of the stopped system equals the load, achieving energy savings and allowing equipment to rest. Because the system consists of multiple units, temperature accuracy is also ensured. Attached Figure Description
[0017] Figure 1This is a schematic diagram of the overall structure and operation process of this utility model;
[0018] Figure 2 This is a front view of the overall structure of this utility model.
[0019] Figure 3 This is a schematic diagram of the internal side of the overall structure of this utility model.
[0020] In the diagram: 1. Compressor; 2. Gas-liquid separator; 3. Four-way valve; 4. High-efficiency tank-type hot water heat exchanger; 5. Evaporator; 6. Evaporator fan; 7. Filter; 8. Electronic expansion valve; 9. Solenoid valve; 10. High-temperature hot water pump; 11. Compressor outlet; 12. Heat exchanger inlet; 13. Liquid receiver heat exchange inlet; 14. Filter inlet; 15. Evaporator inlet; 16. Four-way valve inlet; 17. Liquid receiver inlet; 18. Compressor return port; 19. Defrost inlet; 20. Defrost inlet pipe; 21. Frame; 22. Pressure gauge; 101. Water inlet. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] Reference Figures 1-3 This is a high-temperature hot water unit specifically designed for aquaculture. It includes a frame 21 with several pressure gauges 22 distributed on its front. The frame 21 also contains a compressor 1, a gas-liquid separator tank 2, a four-way valve 3, a high-efficiency tank-type hot water heat exchanger 4, an evaporator 5, an evaporator fan 6, a filter 7, an electronic expansion valve 8, a solenoid valve 9, a high-temperature hot water pump 10, a compressor outlet 11, a heat exchanger inlet 12, a liquid storage tank heat exchange inlet 13, a filter inlet 14, an evaporator inlet 15, a four-way valve inlet 16, a liquid storage tank inlet 17, a compressor return port 18, a defrost inlet 19, a defrost inlet pipe 20, and several other pipes. The pressure gauges 22 are used in areas requiring pressure monitoring and can be embedded in pipes or installed at interfaces.
[0023] A water inlet 101 is provided on one side of the high-temperature hot water pump 10, and several pipes are composed of the first pipe to the twentieth pipe. The water inlet 101 can be used to connect the high-temperature hot water pump 10 to the external water supply pipe.
[0024] The compressor outlet 11 of compressor 1 is connected to the first interface of four-way valve 3 through the eleventh pipe. The normally open interface of four-way valve 3 is connected to high-efficiency tank-type hot water heat exchanger 4 through the twelfth pipe. High-efficiency tank-type hot water heat exchanger 4 is connected to electronic expansion valve 8 through the thirteenth pipe. Electronic expansion valve 8 is connected to filter 7 through the fourteenth pipe. Filter 7 is connected to evaporator inlet 15 of evaporator 5 through the fifteenth pipe. Evaporator 5 is connected to return pipe of four-way valve 3 through the sixteenth pipe. Four-way valve 3 is connected to storage tank inlet 17 of gas separation storage tank 2 through the seventeenth pipe. Gas separation storage tank 2 is connected to compressor return port 18 of compressor 1 through the eighteenth pipe, forming a complete refrigerant circulation system. The outlet of high-efficiency tank-type hot water heat exchanger 4 is connected to high-temperature hot water pump 10 to transport heated water to the aquaculture constant temperature room.
[0025] The high-efficiency tank-type hot water heat exchanger 4 has a refrigerant flow channel inside, which is connected to the normally open interface of the four-way valve 3 through the twelfth pipe and to the electronic expansion valve 8 through the thirteenth pipe. The high-efficiency tank-type hot water heat exchanger 4 has a hot water circulation channel outside, which is connected to the water supply system of the breeding constant temperature room through the high-temperature hot water pump 10. The refrigerant flow channel and the hot water circulation channel are isolated by a high-efficiency heat exchange material to ensure that the heat of the refrigerant is fully transferred to the circulating water, while avoiding direct contact between the refrigerant and the water.
[0026] The evaporator 5 includes an evaporator inlet 15 and an evaporator fan 6. The evaporator 5 is connected to the return pipe of the four-way valve 3 through the sixteenth pipe. The four-way valve 3 is connected to the gas-liquid storage tank 2 through the seventeenth pipe. The evaporator 5 is connected to the high-pressure side of the compressor 1 through the defrost valve inlet 19 and the defrost access pipe 20. When the ambient temperature is too low, the solenoid valve 9 opens to unload part of the heat from the compressor 1 to the evaporator 5, preventing the refrigerant from failing to absorb heat normally due to low temperature.
[0027] The gas-liquid separator 2 is equipped with multiple inlets, including a heat exchange inlet 13, an inlet 17, and a compressor return port 18. The gas-liquid separator 2 is equipped with a conduit, the two ends of which are connected to the heat exchange inlet 13 and the inlet 17, respectively, for separating the gas and liquid in the refrigerant. The gas-liquid separator 2 is connected to the compressor return port 18 of the compressor 1 through the eighteenth pipe to form a closed loop of refrigerant circulation.
[0028] Among them, the electronic expansion valve 8 is connected to the filter 7 through the fourteenth pipe, the electronic expansion valve 8 is connected to the high-efficiency tank-type hot water heat exchanger 4 through the thirteenth pipe, and is also connected to the evaporator 5 through the fifteenth pipe. The electronic expansion valve 8 is regulated by the control system and dynamically adjusts the flow of refrigerant according to the feedback signal of the temperature sensor to ensure that the system can operate efficiently under different ambient temperatures.
[0029] The solenoid valve 9 is located between the unloading port of the compressor 1 and the evaporator 5, and is connected through the defrost valve inlet 19 and the defrost inlet pipe 20. The solenoid valve 9 is controlled by a temperature sensor. When the temperature of the evaporator 5 is detected to be too low, the solenoid valve 9 opens to introduce part of the high-pressure and high-temperature refrigerant from the compressor 1 into the evaporator 5 to prevent the evaporator 5 from frosting or the refrigerant from absorbing too much heat. The solenoid valve 9 is also connected to a control system. The control system sets the temperature threshold through the control panel to realize the automatic defrosting function.
[0030] The high-temperature hot water pump 10 is connected between the outlet of the high-efficiency tank-type hot water heat exchanger 4 and the water supply system of the constant temperature breeding room. It is used to circulate the heated high-temperature water to the constant temperature breeding room. The start and stop of the high-temperature hot water pump 10 is controlled by a temperature sensor. When the return water temperature is detected to be lower than the set value, the high-temperature hot water pump 10 starts to ensure that the temperature in the constant temperature breeding room is stable. The high-temperature hot water pump 10 is also equipped with a flow regulation function, which dynamically adjusts the water flow through the control system to adapt to the breeding needs of different scales.
[0031] The pipeline is equipped with a temperature sensor, which is electrically connected to the thermometer of the control system. The temperature sensor monitors the temperature of the refrigerant and water in the pipeline in real time and feeds the data back to the control system. The control system dynamically adjusts the operating status of the compressor 1, electronic expansion valve 8, solenoid valve 9 and high-temperature hot water pump 10 according to the feedback signal to ensure that the system operates efficiently in energy-saving mode, while maintaining the temperature of the breeding constant temperature room within the set range with slight fluctuations.
[0032] Operating mode: When the return water temperature of the equipment testing pipeline is lower than the set temperature set through the control panel, the compressor 1 starts working, transporting the high-pressure refrigerant gas through the pipeline to the high-efficiency tank-type hot water heat exchanger 4, and then the high-temperature hot water pump 10 discharges it into the breeding constant temperature room. After the refrigerant has dissipated heat, it enters the evaporator 5 to absorb heat. The exhaust evaporator fan 6 draws ambient air from the outside to preheat the refrigerant, allowing it to absorb a certain amount of heat. It is then transported to the gas separation storage tank 2, where the compressor 1 pressurizes and heats it again before it enters the high-efficiency tank-type hot water heat exchanger 4. This cycle repeats to achieve the heating effect. At the same time, if the ambient temperature is too low, the refrigerant may not absorb enough heat at the evaporator 5, causing the refrigerant in the entire system to become low. At this time, the solenoid valve 9 opens, unloading the excess heat from the compressor 1 through the pipeline to the gas separation evaporator 5, so that the temperature of the breeding constant temperature room is maintained within a small range around the set value, achieving precise temperature control of the breeding constant temperature room.
[0033] In summary, this high-temperature hot water system for aquaculture uses temperature sensor P3 to detect pipe temperature and operates in a heating mode. The temperature is set via the control panel. When the set temperature is reached, the compressor shuts off to save energy and reduce consumption. When the ambient temperature is too low, solenoid valve 9 opens, unloading some of the heat from compressor 1 through the pipes to the evaporator, ensuring the normal operation of the refrigerant system. Even when the ambient temperature is low, the system can ensure normal operation of the equipment, maintaining the temperature of the constant temperature room within a small range around the set value, thus preventing large fluctuations in the temperature of the aquaculture constant temperature room.
[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A high-temperature hot water unit for aquaculture, including a frame (21), characterized in that: The front of the frame (21) is provided with several pressure gauges (22). The interior of the frame (21) also includes a compressor (1), a gas-liquid storage tank (2), a four-way valve (3), a high-efficiency tank-type hot water heat exchanger (4), an evaporator (5), an evaporator fan (6), a filter (7), an electronic expansion valve (8), a solenoid valve (9), a high-temperature hot water pump (10), a compression outlet (11), a heat exchanger inlet (12), a storage tank heat exchange inlet (13), a filter inlet (14), an evaporator inlet (15), a four-way valve inlet (16), a storage tank inlet (17), a compressor return port (18), a defrost valve inlet (19), a defrost inlet pipe (20), and several pipes. The high-temperature hot water pump (10) is provided with an inlet (101) on one side, and the plurality of pipes are composed of the first pipe to the twentieth pipe; The compressor outlet (11) of the compressor (1) is connected to the first interface of the four-way valve (3) through the eleventh pipe. The normally open interface of the four-way valve (3) is connected to the high-efficiency tank-type hot water heat exchanger (4) through the twelfth pipe. The high-efficiency tank-type hot water heat exchanger (4) is connected to the electronic expansion valve (8) through the thirteenth pipe. The electronic expansion valve (8) is connected to the filter (7) through the fourteenth pipe. The filter (7) is connected to the evaporator inlet (15) of the evaporator (5) through the fifteenth pipe. The evaporator (5) is connected to the return pipe of the four-way valve (3) through the sixteenth pipe. The four-way valve (3) is connected to the storage tank inlet (17) of the gas separation storage tank (2) through the seventeenth pipe. The gas separation storage tank (2) is connected to the compressor return port (18) of the compressor (1) through the eighteenth pipe. The outlet of the high-efficiency tank-type hot water heat exchanger (4) is connected to the high-temperature hot water pump (10).
2. The high-temperature hot water unit for aquaculture as described in claim 1, characterized in that: The high-efficiency tank-type hot water heat exchanger (4) has a refrigerant flow channel inside. The refrigerant flow channel is connected to the normally open interface of the four-way valve (3) through the twelfth pipe and to the electronic expansion valve (8) through the thirteenth pipe. The high-efficiency tank-type hot water heat exchanger (4) has a hot water circulation channel outside. The hot water circulation channel is connected to the water supply system of the aquaculture constant temperature room through the high-temperature hot water pump (10).
3. The high-temperature hot water unit for aquaculture as described in claim 1, characterized in that: The evaporator (5) includes an evaporator inlet (15) and an evaporator fan (6). The evaporator (5) is connected to the return pipe of the four-way valve (3) through the sixteenth pipe. The four-way valve (3) is connected to the gas separation storage tank (2) through the seventeenth pipe. The evaporator (5) is connected to the high-pressure side of the compressor (1) through the defrost valve inlet (19) and the defrost access pipe (20).
4. The high-temperature hot water unit for aquaculture as described in claim 1, characterized in that: The gas-liquid separation tank (2) is provided with multiple inlets, including a heat exchange inlet (13), an inlet (17), and a compressor return port (18). The gas-liquid separation tank (2) is provided with a conduit, the two ends of which are connected to the heat exchange inlet (13) and the inlet (17), respectively. The gas-liquid separation tank (2) is connected to the compressor return port (18) of the compressor (1) through the eighteenth pipe.
5. The high-temperature hot water unit for aquaculture as described in claim 1, characterized in that: The electronic expansion valve (8) is connected to the filter (7) through the fourteenth pipe, the electronic expansion valve (8) is connected to the high-efficiency tank hot water heat exchanger (4) through the thirteenth pipe, and is also connected to the evaporator (5) through the fifteenth pipe.
6. The high-temperature hot water unit for aquaculture as described in claim 1, characterized in that: The solenoid valve (9) is located between the unloading port of the compressor (1) and the evaporator (5), and is connected through the defrost valve inlet (19) and the defrost access pipe (20).
7. The high-temperature hot water unit for aquaculture as described in claim 1, characterized in that: The high-temperature hot water pump (10) is connected between the outlet of the high-efficiency tank-type hot water heat exchanger (4) and the water supply system of the aquaculture constant temperature room.
8. The high-temperature hot water unit for aquaculture as described in claim 1, characterized in that: A temperature sensor is installed on the pipeline, and the temperature sensor is electrically connected to the temperature gauge of the control system.