Air energy heat pump system for defrosting and heating by using electromagnetic heating conduction oil

Abstract

An air energy heat pump system using electromagnetic heating conduction oil for defrosting and heating comprises an evaporator, the evaporator is connected with an efficient tank through an expansion valve and a compressor, and the interior of the efficient tank is connected with a water storage tank. The auxiliary heating pipe and a refrigerant pipe in the evaporator are connected through a plurality of fins to achieve heat conduction. The air energy heat pump system has the beneficial effects that the air energy heat pump system effectively improves the conversion efficiency of heat energy by adopting a mode of electromagnetically heating the heat-conducting oil. The heat conduction oil serves as a heat transfer medium and can store and carry more heat due to the large specific heat capacity of the heat conduction oil, and therefore efficient heat energy transfer is achieved in the system. Due to the characteristic, the heat pump system can still maintain high heating efficiency in a low-temperature environment, and the application performance of the heat pump in severe cold areas is remarkably improved.

Description

Technical Field

[0001] The utility model relates to an air - energy heat pump, in particular to an air - energy heat pump system that uses electromagnetic heating of heat - conducting oil for defrosting and heating. Background Technique

[0002] In the past two decades, with the continuous enhancement of global energy shortage and environmental protection awareness, air - energy heat pumps have been widely promoted and applied in China due to their energy - saving and efficient characteristics. This system utilizes the heat energy in the external air for indoor heating and hot - water supply, especially performing excellently in areas with relatively warm climates. However, a technical problem has been encountered during the popularization of air - energy heat pump technology. Especially in cold and humid regions, its application has been greatly restricted.

[0003] The core working principle of an air - energy heat pump is to absorb the heat in the external air. However, when encountering extremely cold winter environments, the available heat in the air is greatly reduced, which directly leads to a significant decline in the heating efficiency and overall performance of the heat pump system. This performance decline is more serious in high - humidity environments because the defrosting process consumes a large amount of energy, further affecting the system efficiency. Moreover, in a continuous low - temperature environment, the heat pump may not be able to operate normally due to insufficient heat energy absorption, and may even cause an abnormal increase in the exhaust temperature due to insufficient suction of the compressor, triggering the system's self - protection mechanism, resulting in the shutdown of the heat pump.

[0004] Facing the challenges brought by extremely cold weather, some solutions in the industry are to introduce electric heating elements as an auxiliary to support the operation of the heat pump system in low - temperature environments. Although this approach alleviates the performance degradation problem of the heat pump in cold weather to a certain extent, it also brings new problems. For example, the electric heating rod is extremely prone to corrosion and rust when exposed to a humid environment for a long time, which may lead to its damage, and in severe cases, electric leakage may occur, affecting the user's water safety. Therefore, it is necessary to make further improvements. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the shortcomings of the existing technology, and provide an air - energy heat pump system that uses electromagnetic heating of heat - conducting oil for defrosting and heating, which has a simple structure, is easy to use, can operate efficiently and stably in low - temperature and humid environments, and overcomes the performance degradation and shutdown problems of traditional heat pumps in cold conditions.

[0006] The purpose of the present utility model is achieved in the following way: An air source heat pump system that uses electromagnetic heating of heat-conducting oil for defrosting and heating, which includes an evaporator. The evaporator is connected to a high-efficiency tank through an expansion valve and a compressor. The inside of the high-efficiency tank is connected to a water storage tank. It is characterized in that: An auxiliary heating pipe is also coiled inside the evaporator. Heat conduction is achieved between the auxiliary heating pipe and the refrigerant pipe inside the evaporator through a number of fins.

[0007] The inlet of the auxiliary heating pipe is connected to a heat-conducting oil heating tank through an oil pump, and the outlet of the auxiliary heating pipe is connected to the oil return port of the heat-conducting oil heating tank; The heat-conducting oil heating tank is made of ferromagnetic material, and heat-conducting grease is poured into it. When the oil pump works, it drives the heat-conducting grease to circulate inside the auxiliary heating pipe and the heat-conducting oil heating tank.

[0008] The surface of the heat-conducting oil heating tank is wound with electromagnetic coils, and the electromagnetic coils are connected to an electromagnetic energy driver. When the electromagnetic energy driver works, it uses the electromagnetic coils to heat the heat-conducting oil heating tank, so that the heat-conducting grease inside it is heated up.

[0009] The auxiliary heating pipe and the refrigerant pipe are coiled in a snake shape inside the evaporator. A number of through holes are provided on the fins, and the auxiliary heating pipe and the refrigerant pipe are inserted into the through holes.

[0010] The auxiliary heating pipe and the refrigerant pipe are distributed in a front-back stacked manner.

[0011] The auxiliary heating pipe is located in front of the air inlet direction of the evaporator, and the refrigerant pipe is arranged behind the auxiliary heating pipe.

[0012] The electromagnetic energy driver is electrically connected to a power system and a control system.

[0013] The beneficial effects of the present utility model are as follows: 1. The structure is simple, the production cost is low, and the market competitiveness is improved. 2. The air source heat pump system of the present utility model effectively improves the thermal energy conversion efficiency by adopting the method of electromagnetic heating of heat transfer oil. As a heat transfer medium, heat transfer oil can store and carry more heat due to its large specific heat capacity, thus realizing efficient heat energy transfer in the system. This characteristic enables the heat pump system to maintain a high heating efficiency even in low-temperature environments, significantly enhancing the application performance of the heat pump in cold regions. 3. By arranging auxiliary heating tubes in the evaporator and using fins to strengthen the heat transfer between the auxiliary heating tubes and the refrigerant tubes, the present utility model further improves the heat exchange efficiency. The heat exchange between the heat transfer oil in the auxiliary heating tubes and the refrigerant in the evaporator is more rapid and uniform, ensuring the stability and efficiency of the system during defrosting and heating processes. 4. Compared with the traditional electric auxiliary heating method, the air source heat pump system using heat transfer oil as the heat transfer medium can more effectively utilize the heat generated by electric energy and reduce energy loss. This not only reduces the operating cost but also decreases the dependence on the power grid, having significant economic and environmental advantages. 5. The heat transfer oil is heated electromagnetically, realizing the separation of water and electricity, thus avoiding the safety hazard of electric shock. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of the evaporator in the present utility model.

[0015] Figure 2 It is a schematic diagram of the system principle of the present utility model. Detailed Embodiment

[0016] The present utility model will be further described in detail below with reference to the drawings. An air source heat pump system that uses electromagnetic heating of heat transfer oil for defrosting and heating includes an evaporator 1. The evaporator 1 is connected to a high-efficiency tank 4 through an expansion valve 2 and a compressor 3. The inside of the high-efficiency tank 4 is connected to a water storage tank 5. It is characterized in that: an auxiliary heating tube 6 is also wound inside the evaporator 1, and heat conduction is achieved between the auxiliary heating tube 6 and the refrigerant tube 7 inside the evaporator 1 through a plurality of fins 8.

[0017] The inlet of the auxiliary heating tube 6 is connected to a heat transfer oil heating tank 10 through an oil pump 9, and the outlet of the auxiliary heating tube 6 is connected to the oil return port of the heat transfer oil heating tank 10. The heat transfer oil heating tank 10 is made of ferromagnetic material and filled with heat transfer grease inside. When the oil pump 9 works, it drives the heat transfer grease to circulate inside the auxiliary heating tube 6 and the heat transfer oil heating tank 10.

[0018] An electromagnetic coil 11 is wound on the surface of the heat transfer oil heating tank 10. The electromagnetic coil 11 is connected to an electromagnetic energy driver 12. When the electromagnetic energy driver 12 works, it uses the electromagnetic coil 11 to heat the heat transfer oil heating tank 10 to raise the temperature of the heat transfer grease inside.

[0019] The described auxiliary heating pipe 6 and refrigerant pipe 7 are coiled in a serpentine shape inside the evaporator 1. A number of perforations are provided on the fins 8, and the auxiliary heating pipe 6 and refrigerant pipe 7 are inserted through these perforations.

[0020] The described auxiliary heating pipe 6 and refrigerant pipe 7 are distributed in a front-back stacked manner.

[0021] The described auxiliary heating pipe 6 is located in front of the air inlet direction of the evaporator 1, and the refrigerant pipe 7 is arranged behind the auxiliary heating pipe 6.

[0022] The described electromagnetic energy driver 12 is electrically connected to a power supply system 13 and a control system 14.

[0023] Working principle: This heat pump system mainly consists of components such as an evaporator, an expansion valve, a compressor, a high-efficiency tank, a water storage tank, an auxiliary heating pipe, a refrigerant pipe, fins, an oil pump, a heat-conducting oil heating tank, an electromagnetic coil, and an electromagnetic energy driver. The working principle can be divided into the following key steps:

[0024] 1. Evaporator operation: The evaporator of the air source heat pump system absorbs heat from the outside air, causing the refrigerant inside the evaporator to vaporize. This process is the core of a traditional air source heat pump system, but in a low-temperature environment, the amount of heat that can be absorbed is less, affecting the system efficiency.

[0025] 2. Introduction of the auxiliary heating pipe: To improve the working efficiency of the system in a low-temperature environment, this system is designed with an auxiliary heating pipe, which is the main difference from a traditional air source heat pump system. The auxiliary heating pipe is coiled inside the evaporator and is connected to the refrigerant pipe through fins to achieve heat transfer.

[0026] 3. Circulation of the heat-conducting oil: The inlet of the auxiliary heating pipe is connected to the heat-conducting oil heating tank through an oil pump, and the outlet is connected to the oil return port of the heat-conducting oil heating tank, forming a circulation system for the heat-conducting oil. The heat-conducting oil heating tank is filled with heat-conducting grease, which has a large specific heat capacity and can store a large amount of thermal energy.

[0027] 4. Heating of the heat-conducting oil heating tank: The surface of the heat-conducting oil heating tank is wound with an electromagnetic coil. Through the operation of the electromagnetic energy driver, the electromagnetic coil heats the heat-conducting oil heating tank, causing the heat-conducting grease inside the tank to increase in temperature. Thanks to the high specific heat capacity of the heat-conducting grease, even in a low ambient temperature, this system can effectively store and transfer thermal energy.

[0028] 5. Heat transfer to the evaporator: The heated heat-conducting grease is driven by the oil pump to circulate inside the auxiliary heating pipe, effectively transferring heat to the refrigerant pipe inside the evaporator. While defrosting is achieved, in an extreme environment, the heating efficiency of the evaporator can also be improved during heat pump heating, enhancing the heating capacity of the system in a low-temperature environment.

[0029] Through the above steps, the air source heat pump system utilizes the high specific heat capacity and high heat transfer efficiency of the heat-conducting oil to effectively improve the absorption and transfer of thermal energy in a cold environment, thereby overcoming the problem of performance degradation of traditional systems in low-temperature environments and ensuring the efficient and stable operation of the system.

[0030] In addition, the heat-conducting oil in this case uses electromagnetic heating. The magnetic induction heating system mainly includes an electromagnetic heating coil and an electromagnetic heating control unit. This system efficiently converts electrical energy into thermal energy through electromagnetic induction. Specifically, the electromagnetic energy driver 12 first converts the 220V, 50 / 60Hz mains alternating current into direct current, and then converts this direct current into a high-frequency high-voltage current in the range of 20 - 40KHz. When this high-frequency high-voltage current flows through the electromagnetic coil 11, it generates a rapidly changing alternating magnetic field. When this magnetic field passes through the heat-conducting oil heating tank, a large number of tiny eddy currents are induced inside the metal, causing the metal material itself to heat up rapidly, and then heating the heat-conducting oil heating tank. Therefore, this electromagnetic heating technology adopted by this heat pump system is particularly suitable for areas with relatively low temperatures. In these areas, it can not only be used for the defrosting function but also as an auxiliary heating source for the heat pump water heater, ensuring that the equipment can operate normally even under extremely cold conditions of minus 35°C.

[0031] Furthermore, compared with the traditional resistance wire heating technology, it shows outstanding performance in terms of energy conservation. According to the applicant's calculation, it can achieve more than 30% power saving. The power saving efficiency varies depending on different raw materials and products produced, but in existing applications, the highest energy-saving efficiency can reach 75%, demonstrating excellent energy-saving performance. In addition, this equipment is environmentally friendly and can effectively reduce the impact on the surrounding temperature. It has high durability. The continuous working temperature of the heat-conducting oil is only about 110°C, and its service life is longer, avoiding the need to replace the heating coil in traditional technologies and reducing the subsequent input costs compared with resistance wire heating. Thanks to the high heating efficiency, this equipment can significantly shorten the heating time, thereby improving production efficiency, so it can be widely promoted and used.

[0032] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the claims of this utility model.

Claims

1. An air energy heat pump system for defrosting and heating using electromagnetic heating heat transfer oil, comprising an evaporator (1), the evaporator (1) being connected to a high-efficiency tank (4) via an expansion valve (2) and a compressor (3), the high-efficiency tank (4) being connected to a water storage tank (5), characterized in that: An auxiliary heating tube (6) is further coiled in the evaporator (1), and the auxiliary heating tube (6) is connected to the refrigerant tube (7) in the evaporator (1) via a plurality of fins (8) to achieve heat conduction; The inlet of the auxiliary heating pipe (6) is connected to the heat-conducting oil heating tank (10) through the oil pump (9), and the outlet of the auxiliary heating pipe (6) is connected to the oil return port of the heat-conducting oil heating tank (10); the heat-conducting oil heating tank (10) is made of ferromagnetic material and is filled with heat-conducting grease. When the oil pump (9) is working, it drives the heat-conducting grease to circulate in the auxiliary heating pipe (6) and the heat-conducting oil heating tank (10); The surface of the heat-conducting oil heating tank (10) is wound with an electromagnetic coil (11), which is connected to an electromagnetic energy driver (12). When the electromagnetic energy driver (12) is working, the electromagnetic coil (11) is used to heat the heat-conducting oil heating tank (10), thereby raising the temperature of the heat-conducting grease inside the tank.

2. The air energy heat pump system for defrosting and heating using electromagnetic heating heat transfer oil according to claim 1, characterized in that: The auxiliary heating tube (6) and the refrigerant tube (7) are coiled in a serpentine shape in the evaporator (1); a plurality of through holes are provided on the fin (8), and the auxiliary heating tube (6) and the refrigerant tube (7) are inserted into the through holes.

3. The air energy heat pump system for defrosting and heating using electromagnetic heating heat transfer oil according to claim 1, characterized in that: The auxiliary heating tube (6) and the refrigerant tube (7) are arranged in a front-to-back stacked manner.

4. The air energy heat pump system for defrosting and heating using electromagnetic heating heat transfer oil according to claim 3, characterized in that: The auxiliary heating pipe (6) is located in front of the evaporator (1) in the air inlet direction, and the refrigerant pipe (7) is arranged behind the auxiliary heating pipe (6).

5. The air energy heat pump system for defrosting and heating using electromagnetic heating heat transfer oil according to claim 1, characterized in that: The electromagnetic energy driver (12) is electrically connected to a power supply system (13) and a control system (14).

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