Ultralow-temperature electric auxiliary heating and air energy heat pump crosslinking system
The integration of electric auxiliary heating with air energy heat pumps addresses inefficiencies and frosting issues by enabling rapid defrosting and optimizing system operation, enhancing efficiency and reducing energy costs.
Patent Information
- Application Number
- CN202420251918.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-01
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-02-01
AI Technical Summary
Air-to-energy heat pumps face inefficiencies and high power consumption due to ultra-low temperature operation, leading to frosting and reduced heating effectiveness, with potential freezing issues and excessive energy costs.
An ultra-low temperature electric auxiliary heating system is integrated with the air energy heat pump, featuring multiple electric auxiliary heating rods distributed around the evaporator, which initiates heating before startup to facilitate rapid defrosting and adjusts operation ratios based on ambient conditions.
Enhances energy efficiency, reduces power consumption, and extends the heat pump's service life by leveraging both systems' advantages, ensuring normal operation and comfort while minimizing energy costs.
Smart Images
Figure CN222278711U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to air source heat pump equipment, and more specifically to an ultra-low temperature electric auxiliary heating and air energy heat pump cross-linking system. Background Art
[0002] With the promotion of coal-to-electricity conversion, new heating methods such as air-energy heat pump heating and air-energy heat pump hot water have gradually entered thousands of households. At the same time, it is also favored by the market and customers because of its advantages of energy saving and emission reduction, comfort and safety, environmental protection, reliable and stable performance, and intelligence. Although air-energy heat pumps are popular, ultra-low temperature operation and frosting are its biggest bottlenecks.
[0003] One of the biggest disadvantages of air-to-energy heat pumps is that they are not cold-resistant at ultra-low temperatures and have poor heating effects. The main energy source of air-to-energy heat pumps comes from the heat in the air. However, the outdoor temperature in winter is very low and there is very little heat in the air, which leads to lower heating efficiency of the air-to-energy heat pump and more power consumption. If the outdoor temperature drops below 10 degrees in winter, the air-to-energy heat pump may be frozen due to cold, frost, etc., and cannot provide normal heating, becoming an expensive and power-consuming decoration.
[0004] The second biggest disadvantage of air-energy heat pumps is that they consume too much electricity and have serious frost problems. The most notable climate feature of most northern regions is the long and cold winter. The low winter temperature means that there is very little heat in the air, and the air-energy heat pump, which relies on air heat as its operating power, has to keep heating, resulting in the air-energy heat pump working too long and consuming a lot of electricity; in addition, when the temperature is below minus 5°C, and if the air-energy heat pump is powered off for more than 4 hours, it is likely to cause the heat exchanger to freeze and crack, which requires the air-energy heat pump to be powered on for a long time, resulting in excessively high operating costs. Utility Model Content
[0005] The technical problem to be solved by the utility model is how to improve the energy efficiency of the system and reduce energy consumption while achieving rapid defrosting and prolonging the service life of the heat pump under the premise of solving the problem of ultra-low temperature operation.
[0006] In order to solve the above problems, the utility model provides an ultra-low temperature electric auxiliary heating and air energy heat pump cross-linking system, which is characterized in that it includes a compressor, an evaporator, a condenser, a control device and a throttling device, and is characterized in that it also includes electric auxiliary heating, which is combined with the evaporator to form an electric auxiliary heating evaporator combined component, and the electric auxiliary heating is connected to the control device.
[0007] The ultra-low temperature electric auxiliary heating and air energy heat pump cross-linking system is characterized in that the electric auxiliary heating includes more than two parallel arranged electric auxiliary heating rods, and the electric auxiliary heating rods are evenly distributed around the fins of the evaporator.
[0008] The ultra-low temperature electric auxiliary heating and air energy heat pump cross-linking system is characterized in that the electric auxiliary heating is provided with the same number of electric auxiliary heating rods as the evaporator liquid separation refrigerant pipes, and the electric auxiliary heating rods are matched with the evaporator liquid separation refrigerant pipes.
[0009] The ultra-low temperature electric auxiliary heating and air energy heat pump cross-linking system is characterized in that the electric auxiliary heating is turned on first when the power is turned on for the first time, and the electric auxiliary heating rod in the electric auxiliary heating evaporator assembly first heats the evaporator fins for 20 to 40 seconds. At the same time, the system enters the cascade rapid thawing and defrosting mode before starting up, and enters the normal working mode of the air energy heat pump after completing the cascade rapid thawing and defrosting.
[0010] The ultra-low temperature electric auxiliary heating and air energy heat pump cross-linking system is characterized in that the use ratio of the air energy heat pump and the auxiliary electric heating system is adjusted according to the ambient temperature, so that the auxiliary electric heating system works to maintain the normal operation of the heat pump.
[0011] The implementation of the utility model has the following beneficial effects: through the combined application of the air energy heat pump and the auxiliary electric heating system, by adjusting the usage ratio of the two systems, the advantages of both systems can be fully utilized, the efficiency and service life of the entire air energy heat pump system can be improved, and at the same time, the comfort and safety of users can be guaranteed and electricity can be saved. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the connection of the ultra-low temperature electric auxiliary heating and air energy heat pump cross-linking system;
[0013] Figure 2 It is a three-dimensional schematic diagram of the ultra-low temperature electric auxiliary heating and air energy heat pump cross-linking system. DETAILED DESCRIPTION
[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0015] Figure 1 It is a schematic diagram of the connection of the ultra-low temperature electric auxiliary heating and air energy heat pump cross-linking system; Figure 2It is a three-dimensional schematic diagram of the ultra-low temperature electric auxiliary heating and air energy heat pump cross-linking system. The ultra-low temperature electric auxiliary heating and air energy heat pump cross-linking system mainly includes a compressor 4, an electric auxiliary heating evaporator combination component 1, a condenser 5, a control device 9, a throttling device 11, a gas-liquid separator 3, a four-way valve 2, an economizer 8, a liquid reservoir 6 and a filter 7. The electric auxiliary heating is integrated with the evaporator to form an electric auxiliary heating evaporator combination component, and the electric auxiliary heating is connected to the control device. The electric auxiliary heating includes more than two parallel electric auxiliary heating rods, and the electric auxiliary heating rods are evenly distributed around the fins of the evaporator. Or the electric auxiliary heating is provided with the same number of electric auxiliary heating rods as the evaporator liquid separation refrigerant pipe, and the electric auxiliary heating rods are matched with the evaporator liquid separation refrigerant pipe.
[0016] When the machine is started, the electric auxiliary heating is turned on first. The electric auxiliary heating rod 10 in the electric auxiliary heating evaporator assembly heats the evaporator fins for 20 to 40 seconds. At the same time, the system enters the cascade rapid thawing and defrosting mode before starting. After completing the cascade rapid thawing and defrosting, it enters the normal working mode of the air energy heat pump. The main working modules include:
[0017] 1: Electric auxiliary heating evaporator assembly: including electric auxiliary heating and evaporator. In the evaporator, the refrigerant is in a low-pressure state and enters the evaporator through the diffusion valve. The air outside the evaporator passes through the evaporator, contacts the refrigerant and exchanges heat. In this process, the heat in the air is absorbed and transferred to the refrigerant, causing it to evaporate and convert into low-temperature and low-pressure gas; the electric auxiliary heating realizes the auxiliary heating function.
[0018] 2: Compressor: The compressor starts, and inside the compressor, the low-temperature and low-pressure gas is compressed into high-temperature and high-pressure gas.
[0019] 3: Condenser: The high-temperature and high-pressure gas leaves the compressor and enters the condenser; in the condenser, the refrigerant exchanges heat with the water in the heating system; the refrigerant in the condenser releases heat, causing it to condense into a high-temperature and high-pressure liquid state.
[0020] 4: Throttling device: When the high-temperature and high-pressure liquid passes through the throttling device, the pressure is reduced and the temperature also drops accordingly, and it re-enters the evaporator for circulation.
[0021] 5: Control device: Automatically collects ambient temperature. When the external ambient temperature is too low (below -35 degrees Celsius) or the external ambient temperature sensor detects frost on the evaporator, the unit automatically turns on the cascade fast thawing and defrosting mode through the control device. It completely solves the two bottleneck problems of ultra-low temperature operation and frosting of air-energy heat pumps, and helps air-energy heat pumps to adjust the use ratio of air-energy heat pumps and auxiliary electric heating systems as needed in different seasons and climatic conditions, thereby improving overall efficiency and energy saving; at the same time, it reduces the loss and wear caused by excessive operation, thereby extending the service life, and greatly reduces electricity consumption, reducing users' energy consumption and energy costs.
[0022] The system integrates the characteristics that the air energy heat pump can provide a certain heating effect at a lower temperature, and in an extremely low temperature environment, the auxiliary electric heating system can provide additional heat for the heat pump. This combined application method can make full use of the advantages of both and improve the efficiency of the entire heat extraction. At a higher room temperature, the heat pump can work alone, and when the temperature is too low, the auxiliary electric heating system can supplement the heat, which can ensure the heat demand of the air energy heat pump and ensure the normal operation of the system. At the same time, under different seasons and climatic conditions, the use ratio of the air energy heat pump and the auxiliary electric heating system can be adjusted as needed to improve the overall efficiency and energy saving. It can solve the bottleneck problem that the air energy heat pump is not cold-resistant and has poor heating effect at ultra-low temperature operation. The air energy heat pump can provide a certain heating effect at a lower temperature, and in an extremely low temperature environment, the auxiliary electric heating system can provide additional heat for the heat pump. This combined application method can make full use of the advantages of both and improve the efficiency of the entire heat extraction. At a higher room temperature, the heat pump can work alone, and when the temperature is too low, the auxiliary electric heating system can supplement the heat, which can ensure the heat demand of the air energy heat pump and ensure the normal operation of the system. At the same time, in different seasons and climatic conditions, the usage ratio of air energy heat pump and auxiliary electric heating system can be adjusted as needed to improve the overall efficiency and energy saving.
[0023] The combined application of air energy heat pump and auxiliary electric heating system can also assist in rapid defrosting and increase the service life of heat pump. When air energy heat pump works in low temperature environment, the frosting of condenser will cause the heat pump efficiency to decrease, and even the heat pump will not work properly. The auxiliary electric heating system can assist in heating for defrosting to avoid this situation. In this way, the normal operation of the heat pump can be ensured, which can not only reduce the loss and wear caused by excessive operation, thereby extending the service life, but also greatly reduce the power consumption, reduce the energy consumption and energy cost of users. It can solve the bottleneck problem of too much power consumption and serious frosting of air energy heat pump. The combined application of air energy heat pump and auxiliary electric heating system can also assist in rapid defrosting and increase the service life of heat pump. When air energy heat pump works in low temperature environment, the frosting of condenser will cause the heat pump efficiency to decrease, and even the heat pump will not work properly. The auxiliary electric heating system can assist in heating for defrosting to avoid this situation.
[0024] The above disclosure is only one embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment are implemented, and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.
Claims
1. An ultra-low temperature electric auxiliary heating and air energy heat pump cross-linking system, characterized in that The utility model comprises a compressor, an evaporator, a condenser, a control device and a throttling device, and is characterized in that it also comprises electric auxiliary heating, wherein the electric auxiliary heating is integrated with the evaporator to form an electric auxiliary heating evaporator combined component, and the electric auxiliary heating is connected to the control device.
2. The ultra-low temperature electric auxiliary heating and air energy heat pump cross-linking system according to claim 1 is characterized in that The electric auxiliary heating includes more than two electric auxiliary heating rods arranged in parallel, and the electric auxiliary heating rods are evenly distributed around the fins of the evaporator.
3. The ultra-low temperature electric auxiliary heating and air energy heat pump cross-linking system according to claim 1 is characterized in that The electric auxiliary heating is provided with the same number of electric auxiliary heating rods as the liquid separation refrigerant tubes of the evaporator, and the electric auxiliary heating rods are matched with the liquid separation refrigerant tubes of the evaporator.
4. The ultra-low temperature electric auxiliary heating and air energy heat pump cross-linking system according to claim 2 or 3, characterized in that When powered on for the first time, turn on the electric auxiliary heating. The electric auxiliary heating rod in the electric auxiliary heating evaporator assembly will heat the evaporator fins for 20 to 40 seconds. At the same time, the system enters the cascade rapid thawing and defrosting mode before starting up. After completing the cascade rapid thawing and defrosting, it enters the normal working mode of the air energy heat pump.
5. The ultra-low temperature electric auxiliary heating and air energy heat pump cross-linking system according to claim 4 is characterized in that The usage ratio of the air energy heat pump and the auxiliary electric heating system is adjusted according to the ambient temperature, so that the auxiliary electric heating system can work to maintain the normal operation of the heat pump.