Frost prevention and dust removal device based on plasma wind and heat exchange system
By using plasma wind generated by a plasma wind generator module in the heat exchange system, the problem of frost formation on the evaporator surface in traditional heat exchange systems under low temperature and high humidity conditions has been solved, thereby improving stability and efficiency, extending the service life of key components, and reducing operation and maintenance costs.
Patent Information
- Application Number
- CN202520389891.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-06
AI Technical Summary
When traditional heat exchange systems operate in low-temperature and high-humidity environments, frost easily forms on the evaporator surface, leading to a decrease in heat exchange efficiency, affecting the stability of heating or cooling, and shortening the service life of key components such as compressors and valves.
The anti-frost and dust removal device based on plasma wind generates high-energy electrons, ions, and free radicals on the air inlet side of the evaporator through a plasma wind generation module, forming plasma wind. This inhibits water molecules from frosting and decomposes the frost layer that has already formed. At the same time, it removes dust from the surface of the evaporator, decomposes organic pollutants, and sterilizes and inactivates viruses.
It improves the heating or cooling stability of the heat exchange system, extends the service life of key components such as compressors and valves, reduces operation and maintenance costs, and expands the application scope.
Smart Images
Figure CN223869514U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to heat exchange technology, and more particularly to a frost prevention and dust removal device and heat exchange system based on plasma wind. Background Technology
[0002] A heat exchange system is a system that transfers heat between two different substances through a heat exchanger. It can transfer heat energy from a high-temperature substance to a low-temperature substance. Examples include heat pump systems and refrigeration systems. A heat exchange system typically includes an evaporator and a condenser. The evaporator absorbs external heat and vaporizes the refrigerant flowing through it, while the condenser releases heat and liquefies the refrigerant flowing through it.
[0003] Traditional heat exchange systems are prone to frost formation on the evaporator surface when operating in low-temperature, high-humidity environments, leading to a significant decrease in heat exchange efficiency and necessitating frequent activation of the reverse cycle. Reverse cycle can interrupt the heating or cooling process, affecting the stability of heating or cooling. Furthermore, reverse cycle can cause fluctuations in pipeline pressure, reducing the lifespan of critical components such as compressors and valves. Utility Model Content
[0004] This invention provides a defrosting and dust removal device and heat exchange system based on plasma wind, which can improve the stability of the heat exchange system in heating or cooling, extend the service life of key components such as compressors and valves, improve heat exchange efficiency, reduce operation and maintenance costs, and expand the application scope of the heat exchange system.
[0005] In the first aspect, this utility model provides a frost prevention and dust removal device based on plasma wind, which is installed on the air inlet side of the evaporator of the heat exchange system;
[0006] The anti-frost and dust removal device based on plasma wind includes multiple plasma wind generating modules, and the multiple plasma wind generating modules are arranged in an array.
[0007] The plasma wind generating module includes an ionization unit and a high-voltage conversion unit. The high-voltage conversion unit is connected to a power source and is used to convert the power source voltage into the high-voltage electricity required for ionization. The ionization unit is connected to the high-voltage conversion unit, and the high-voltage electricity generated by the high-voltage conversion unit is applied to the ionization unit to form a high-voltage electric field.
[0008] Optionally, the plurality of plasma wind generating modules are divided into at least two groups, and each group of plasma wind generating modules is connected to the same power line.
[0009] Optionally, the plasma wind-based anti-frost dust removal device also includes a dustproof mesh cover, which is disposed on the air inlet side of the plasma wind-based anti-frost dust removal device.
[0010] Optionally, the plasma wind-based anti-frost dust removal device also includes an ozone filter, which is disposed on the air outlet side of the plasma wind-based anti-frost dust removal device.
[0011] Secondly, this utility model also provides a heat exchange system, including the anti-frost and dust removal device based on plasma wind as provided in the first aspect of this utility model.
[0012] Optionally, the heat exchange system also includes a compressor, a four-way valve, an evaporator, a throttling valve, a condenser, and a controller, wherein the compressor is electrically connected to the controller, and the plasma wind-based anti-frost and dust removal device is located on the air inlet side of the evaporator;
[0013] The refrigerant outlet of the compressor is connected to the first end of the four-way valve, the second end of the four-way valve is connected to the refrigerant inlet of the condenser, the refrigerant outlet of the condenser is connected to the refrigerant inlet of the throttle valve, the refrigerant outlet of the throttle valve is connected to the refrigerant inlet of the evaporator, the refrigerant outlet of the evaporator is connected to the third end of the four-way valve, and the fourth end of the four-way valve is connected to the refrigerant inlet of the compressor.
[0014] Optionally, the heat exchange system also includes a temperature sensor and a humidity sensor, both of which are located on the air inlet side of the evaporator and are connected to the controller.
[0015] Optionally, the heat exchange system also includes an infrared thermal imager connected to the controller for detecting the surface temperature distribution on the air inlet side of the evaporator.
[0016] Optionally, the heat exchange system further includes a differential pressure sensor for detecting the air pressure difference between the air inlet side and the air outlet side of the evaporator. The differential pressure sensor includes a first sensing part and a second sensing part, with the first sensing part disposed on the air inlet side of the evaporator and the second sensing part disposed on the air outlet side of the evaporator.
[0017] Optionally, the heat exchange system can be a heat pump system or a refrigeration system.
[0018] This utility model provides a plasma wind-based anti-frost and dust removal device, comprising multiple plasma wind generating modules arranged in an array. Each plasma wind generating module includes an ionization unit and a high-voltage conversion unit. The high-voltage conversion unit is connected to a power supply and converts the power supply voltage into the high-voltage electricity required for ionization. The ionization unit is connected to the high-voltage conversion unit, and the high-voltage electricity generated by the high-voltage conversion unit is applied to the ionization unit to form a high-voltage electric field. The high-voltage electric field ionizes gas molecules in the air, generating high-energy electrons, ions, free radicals, and other active particles. Positive and negative ions move towards opposite poles under the action of the electric field, forming ion migration and driving neutral gas to form plasma wind. The plasma wind is blown onto the evaporator surface, which can inhibit water molecule frost formation and decompose the formed frost layer. It eliminates the need for reverse circulation in the heat exchange system, improves the stability of heating or cooling, and extends the service life of key components such as compressors and valves. In addition, the plasma wind can also remove dust from the evaporator surface, decompose organic pollutants, sterilize, and inactivate viruses, thereby improving heat exchange efficiency, reducing operation and maintenance costs, and expanding the application range of the heat exchange system. Attached Figure Description
[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.
[0020] Figure 1 A schematic diagram of the structure of a plasma wind-based anti-frost and dust removal device provided by this utility model;
[0021] Figure 2 This is a schematic diagram of the structure of a heat exchange system provided by this utility model;
[0022] Figure 3 This is a schematic diagram of the electrical connection relationship of the heat exchange system provided by this utility model. Detailed Implementation
[0023] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. Additionally, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.
[0026] Figure 1 A schematic diagram of a frost prevention and dust removal device based on plasma wind provided by this utility model is shown below. Figure 1 As shown, the plasma wind-based anti-frost and dust removal device 100 includes multiple plasma wind generating modules 110, which are arranged in an array. In use, the plasma wind-based anti-frost and dust removal device 100 is located on the air inlet side of the evaporator. Air entering from the air inlet side of the evaporator is ionized by the plasma wind generating modules 110 after entering the device 100, generating plasma wind, which is then sent into the evaporator.
[0027] The plasma wind generating module 110 includes an ionization unit 111 and a high-voltage conversion unit 112. The high-voltage conversion unit 111 is connected to a power supply and is used to convert the power supply voltage into the high voltage required for ionization. The ionization unit 111 is connected to the high-voltage conversion unit 112. The high voltage generated by the high-voltage conversion unit 112 is applied to the ionization unit 111 to form a high-voltage electric field. The high-voltage electric field ionizes gas molecules in the air (such as O2, H2O, N2, etc.) to generate high-energy electrons, ions, free radicals and other active particles. Positive and negative ions move to opposite poles under the action of the electric field to form ion migration and drive the neutral gas to form plasma wind.
[0028] Specifically, the principle of air ionization is as follows:
[0029] Oxygen ionization:
[0030] e - +O2→2O·+e -
[0031] Water molecule ionization:
[0032] e - +H₂O→H·+·OH+e -
[0033] Nitrogen ionization:
[0034] e - +N2→2N·+e -
[0035] Plasma air blown onto the evaporator surface can inhibit water molecules from frosting, decompose existing frost layers, remove dust, and decompose organic pollutants. The specific principle is as follows:
[0036] Inhibiting water molecule frost formation: The active particles in the plasma wind can break the hydrogen bonds of water molecules, inhibiting the formation of frost crystals.
[0037] H₂O + O· → H₂O· + H·
[0038] H₂O + ·OH → H₂O₂
[0039] H2O2 can accelerate the decomposition of frost.
[0040] Decomposing the existing frost layer: High-energy particles bombard the frost layer (solid water: H2O) (s) This causes it to sublimate into gaseous water (H2O). (g) (or decompose)
[0041] H2O (s) +e - →H2O (g) +e -
[0042]
[0043] Compared to the traditional reverse circulation defrosting method, the defrosting structure of this invention can defrost during the normal operation of the heat exchange system without the need for reverse circulation, thereby improving the stability of heating or cooling and extending the service life of key components such as compressors and valves.
[0044] Dust removal: The plasma in the plasma wind is charged and attaches to dust and oil mist particles, causing the dust and oil mist particles to also become charged. Through electric field adsorption or ion wind guidance, the dust and oil mist particles settle down, realizing the self-cleaning of the evaporator, extending the manual cleaning cycle and reducing operation and maintenance costs.
[0045] Decomposition of organic pollutants: Free radical chain reactions can decompose organic pollutants such as formaldehyde and oils.
[0046] ·OH + CH₂O → HCO₃· + H₂O
[0047] O·+C n H m →CO2+H2O
[0048] In addition, plasma wind can also kill bacteria and inactivate viruses. Specifically, oxygen free radicals can destroy the cell membrane lipids of bacteria and oxidize them into lipid peroxides; hydroxyl free radicals can destroy viral RNA (ribonucleotides) and DNA (deoxynucleotides), thereby inactivating the genetic material of the virus.
[0049] The decomposition, sterilization, and virus inactivation of organic pollutants expand the additional functions and applicable scenarios of the heat exchange system, and broaden its application value in scenarios with strict requirements for air cleanliness, such as medical, food processing, and laboratory settings.
[0050] This utility model provides a plasma wind-based anti-frost and dust removal device, comprising multiple plasma wind generating modules arranged in an array. Each plasma wind generating module includes an ionization unit and a high-voltage conversion unit. The high-voltage conversion unit is connected to a power supply and converts the power supply voltage into the high-voltage electricity required for ionization. The ionization unit is connected to the high-voltage conversion unit, and the high-voltage electricity generated by the high-voltage conversion unit is applied to the ionization unit to form a high-voltage electric field. The high-voltage electric field ionizes gas molecules in the air, generating high-energy electrons, ions, free radicals, and other active particles. Positive and negative ions move towards opposite poles under the action of the electric field, forming ion migration and driving neutral gas to form plasma wind. The plasma wind is blown onto the evaporator surface, which can inhibit water molecule frost formation and decompose the formed frost layer. It eliminates the need for reverse circulation in the heat exchange system, improves the stability of heating or cooling, and extends the service life of key components such as compressors and valves. In addition, the plasma wind can also remove dust from the evaporator surface, decompose organic pollutants, sterilize, and inactivate viruses, thereby improving heat exchange efficiency, reducing operation and maintenance costs, and expanding the application range of the heat exchange system.
[0051] In some embodiments of this utility model, the plurality of plasma wind generating modules 110 are divided into at least two groups, and each group of plasma wind generating modules 110 is connected to the same power line. For example, Figure 1 As shown, each row or column of plasma wind generating module 110 is grouped together and connected to the same group of power lines.
[0052] In some embodiments of this utility model, the plasma wind-based anti-frost dust removal device 100 further includes a dustproof mesh cover 120, which is disposed on the air inlet side of the plasma wind-based anti-frost dust removal device 100 to filter dust and oil mist particles in the air inlet. Exemplarily, the dustproof mesh cover 120 has a detachable structure for easy disassembly and cleaning.
[0053] In some embodiments of this utility model, such as Figure 1 As shown, the plasma wind-based anti-frost dust removal device 100 also includes an ozone filter 130, which is disposed on the air outlet side of the plasma wind-based anti-frost dust removal device 100. During operation, the plasma wind generating module 110 ionizes oxygen in the air, generating ozone. If the indoor ozone concentration exceeds the standard, it can be harmful to the human body. Therefore, an ozone filter 130 can be installed on the air outlet side of the plasma wind-based anti-frost dust removal device 100 to filter out ozone in the airflow. For example, a catalytic filter containing OD-KC type or other supported manganese-based composite metal oxides can be used to rapidly catalytically decompose ozone into oxygen at room temperature.
[0054] This utility model also provides a heat exchange system, including a plasma wind-based anti-frost and dust removal device as provided in any of the foregoing embodiments of this utility model. Figure 2 This is a schematic diagram of the structure of a heat exchange system provided by this utility model. Figure 3 This is a schematic diagram of the electrical connection relationship of the heat exchange system provided by this utility model, as shown below. Figure 2 , 3 As shown, the heat exchange system includes a plasma wind-based anti-frost and dust removal device 100, a compressor 210, a four-way valve 220, an evaporator 230, a throttle valve 240, a condenser 250, and a controller 260. The compressor 210 is electrically connected to the controller 260, and the plasma wind-based anti-frost and dust removal device 100 is located on the air inlet side of the evaporator 230.
[0055] The refrigerant outlet of compressor 210 is connected to the first end D of four-way valve 220, the second end C of four-way valve 220 is connected to the refrigerant inlet of condenser 250, the refrigerant outlet of condenser 250 is connected to the refrigerant inlet of throttle valve 240, the refrigerant outlet of throttle valve 240 is connected to the refrigerant inlet of evaporator 230, the refrigerant outlet of evaporator 230 is connected to the third end E of four-way valve 220, and the fourth end S of four-way valve 220 is connected to the refrigerant inlet of compressor 210. A plasma-based anti-frost and dust removal device 100 is installed at the air inlet of evaporator 230. Specifically, the plasma-based anti-frost and dust removal device 100 has been described in detail in the aforementioned embodiments and will not be repeated here.
[0056] During the operation of the heat exchange system, the compressor 210 compresses the refrigerant into a high-temperature gas, which is then sent to the condenser 250 through the four-way valve 220. In the condenser 250, the refrigerant exchanges heat with the external fluid, releasing heat and condensing into a liquid. Then, it is throttled and depressurized by the expansion valve 240 and sent to the evaporator 230. In the evaporator 230, the refrigerant exchanges heat with the external fluid, absorbing heat and vaporizing into a gas. Finally, it flows back to the compressor 210 through the four-way valve 220.
[0057] In some embodiments of this utility model, such as Figure 2 , 3 As shown, the heat exchange system also includes a temperature sensor 271 and a humidity sensor 272, both of which are located on the air inlet side of the evaporator 230 and are connected to the controller 260. For example, the temperature sensor 271 and humidity sensor 272 are located in the central area of the surface on the air inlet side of the evaporator 230 to collect the inlet air temperature and humidity and upload them to the controller 260. The controller 260 can determine whether to activate the plasma-based anti-frost and dust removal device 100 and the power of the plasma-based anti-frost and dust removal device 100 based on the real-time collected inlet air temperature and humidity.
[0058] In some embodiments of this utility model, such as Figure 2 , 3 As shown, the heat exchange system also includes an infrared thermal imager 273, which is connected to the controller 260. The infrared thermal imager 273 is used to detect the surface temperature distribution on the air inlet side of the evaporator 230 and upload the data to the controller 260. Based on the surface temperature distribution on the air inlet side of the evaporator 230, the controller 260 determines whether there is localized frost or localized dirt accumulation. If so, it activates the plasma-based anti-frost and dust removal device 100.
[0059] In some embodiments of this utility model, such as Figure 2 , 3 As shown, the heat exchange system also includes a differential pressure sensor 274 for detecting the air pressure difference between the air inlet side and the air outlet side of the evaporator 230. The differential pressure sensor 274 includes a first sensing part 2741 and a second sensing part 2742. The first sensing part 2741 is disposed on the air inlet side of the evaporator 230, and the second sensing part 2742 is disposed on the air outlet side of the evaporator 230.
[0060] In some embodiments of this invention, the heat exchange system is a heat pump system (e.g., a heat pump water heater) and a refrigeration system (e.g., a refrigeration air conditioner). Exemplarily, when the heat exchange system is a heat pump system, the refrigerant in the evaporator 230 absorbs heat from the air, and the refrigerant in the condenser 250 releases heat to the outside, heating the fluid (e.g., water) flowing through the condenser to achieve heating. When the heat exchange system is a refrigeration system, the refrigerant in the evaporator 230 absorbs heat from the air, lowering the ambient temperature to achieve cooling, and the refrigerant in the condenser 250 releases heat to the outside.
[0061] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," etc., are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0062] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.
[0063] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0064] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.
Claims
1. A defrosting and dust removal device based on plasma wind, characterized in that, It is installed on the air inlet side of the evaporator in the heat exchange system; The anti-frost and dust removal device based on plasma wind includes multiple plasma wind generating modules, and the multiple plasma wind generating modules are arranged in an array. The plasma wind generating module includes an ionization unit and a high-voltage conversion unit. The high-voltage conversion unit is connected to a power source and is used to convert the power source voltage into the high-voltage electricity required for ionization. The ionization unit is connected to the high-voltage conversion unit, and the high-voltage electricity generated by the high-voltage conversion unit is applied to the ionization unit to form a high-voltage electric field.
2. The anti-frost dust removal device based on plasma wind according to claim 1, characterized in that, The multiple plasma wind generating modules are divided into at least two groups, and each group of plasma wind generating modules is connected to the same power line.
3. The anti-frost dust removal device based on plasma wind according to claim 1, characterized in that, It also includes a dustproof mesh cover, which is disposed on the air inlet side of the plasma wind-based anti-frost dust removal device.
4. The anti-frost dust removal device based on plasma wind according to claim 1, characterized in that, It also includes an ozone filter, which is disposed on the air outlet side of the plasma wind-based anti-frost dust removal device.
5. A heat exchange system, characterized in that, Including the anti-frost and dust removal device based on plasma wind as described in any one of claims 1-4.
6. The heat exchange system according to claim 5, characterized in that, It also includes a compressor, a four-way valve, an evaporator, a throttle valve, a condenser, and a controller. The compressor is electrically connected to the controller, and the plasma wind-based anti-frost and dust removal device is located on the air inlet side of the evaporator. The refrigerant outlet of the compressor is connected to the first end of the four-way valve, the second end of the four-way valve is connected to the refrigerant inlet of the condenser, the refrigerant outlet of the condenser is connected to the refrigerant inlet of the throttle valve, the refrigerant outlet of the throttle valve is connected to the refrigerant inlet of the evaporator, the refrigerant outlet of the evaporator is connected to the third end of the four-way valve, and the fourth end of the four-way valve is connected to the refrigerant inlet of the compressor.
7. The heat exchange system according to claim 6, characterized in that, It also includes a temperature sensor and a humidity sensor, both of which are located on the air inlet side of the evaporator and are connected to the controller.
8. The heat exchange system according to claim 6, characterized in that, It also includes an infrared thermal imager, which is connected to the controller and is used to detect the surface temperature distribution on the air inlet side of the evaporator.
9. The heat exchange system according to claim 6, characterized in that, It also includes a differential pressure sensor for detecting the air pressure difference between the air inlet side and the air outlet side of the evaporator. The differential pressure sensor includes a first sensing part and a second sensing part, with the first sensing part disposed on the air inlet side of the evaporator and the second sensing part disposed on the air outlet side of the evaporator.
10. The heat exchange system according to claim 6, characterized in that, The heat exchange system consists of a heat pump system and a refrigeration system.