CN112856622A - Purification and disinfection system for air inlet and air return inlet of central air conditioner - Google Patents
Purification and disinfection system for air inlet and air return inlet of central air conditioner Download PDFInfo
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- CN112856622A CN112856622A CN202110077587.6A CN202110077587A CN112856622A CN 112856622 A CN112856622 A CN 112856622A CN 202110077587 A CN202110077587 A CN 202110077587A CN 112856622 A CN112856622 A CN 112856622A
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- air
- air inlet
- return
- drying device
- fan coil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C5/00—Working or handling ice
- F25C5/02—Apparatus for disintegrating, removing or harvesting ice
- F25C5/04—Apparatus for disintegrating, removing or harvesting ice without the use of saws
- F25C5/043—Tools, e.g. ice picks, ice crushers, ice shavers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
- F24F2003/1446—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only by condensing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention relates to the technical field of air conditioning equipment, and discloses a purification and sterilization system for an air inlet and an air return inlet of a central air conditioner. This a purification virus killing system for central air conditioning air intake and return air inlet, the new trend of getting into is dried through drying device, the new trend after the drying mixes with the return air and passes through electrostatic purification device again and filter, on the one hand, make the air keep being comparatively dry state, guarantee that the electric level attaches electricity and electrostatic absorption effect, guarantee to all carry out better disinfection filtration to new trend and cold wind, on the other hand, reduce microthermal influence, reduce extra power consumption, secondly, because drying device has dried the air, the air humidity that flows at the pipeline is lower, consequently, the phenomenon of condensing into ice is also less, guarantee pipeline air flow's smoothness, guarantee the change of indoor air muddy air.
Description
Technical Field
The invention relates to the technical field of air conditioning equipment, in particular to a purification and disinfection system for an air inlet and an air return inlet of a central air conditioner.
Background
When temperature is higher, indoor public occasion not only need the circulation ventilation, still need open the air conditioner for a long time in order to reduce indoor temperature, in order to avoid the diffusion of the virus that probably exists in the air, under some circumstances, all take the new trend to circulate, but because the indoor outer difference in temperature is great, all use the new trend can make the increase by a wide margin of air conditioner power consumption, consequently, disinfect the air conditioner return air, take new trend, return air to mix and can effectively reduce the air conditioner energy consumption.
The types of the common disinfection and sterilization devices are various, wherein the electrostatic dust collection technology is a disinfection mode with a good effect, the particles and germs attached to the particles are charged through the charge module, the electric field and the electrostatic plate of the electrostatic dust collection device adsorb the charged particles through the electric field, and the particles and the germs in the air are filtered out. However, the particles are insulated under dry conditions, but if the air humidity is high, the electrification performance of the particles is reduced, the carried charges are reduced, the dust removal effect is reduced, and the particles may not work seriously, in winter, the rainy and snowy weather is frequent, and at the moment, the indoor hot air is mixed with the cold air of fresh air, the whole humidity is increased, the efficacy of the electrostatic disinfection device is affected, on the other hand, the virus infection is in a period with high incidence in winter, and in winter, the use of an air conditioner and the time for closing a room are greatly increased in the rainy and snowy weather, so the disinfection capability in the rainy and snowy weather in winter needs to be enhanced.
Secondly, in winter, when cold air enters, the water vapor contained therein may condense in the pipe, resulting in a decrease in the flow-through capacity of the pipe.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a technical scheme of a purification and disinfection system for an air inlet and an air return port of a central air conditioner, which has the advantages of filtering out water vapor and avoiding freezing and solves the problems in the prior art.
The invention provides the following technical scheme: the utility model provides a purify virus killing system for central air conditioning air intake and return air inlet, includes fan coil, fan coil intercommunication has return air inlet, new trend air inlet and supply-air outlet, fan coil's supply-air outlet is equipped with filter equipment, still be equipped with electrostatic purification device in the fan coil, electrostatic purification device locates between collection section and the supply-air outlet of new trend air inlet and return air inlet, its characterized in that:
an ionization device is installed on one side of an air return opening of the fan coil and comprises an electrode needle, and the needle point of the electrode needle faces the outer side direction of the air return opening, so that air ionization can be performed on passing air, dust microparticles are electrified, and bacteria and viruses attached to the dust microparticles are inactivated;
the novel air conditioner is characterized in that a drying device is fixedly mounted on one side of a fresh air inlet of the fan coil, the drying device is communicated with an exchange tube, a circulating water pump is arranged on the exchange tube, a heat exchange tube section is arranged on the exchange tube and is wound around an air conditioner copper tube between an air conditioner evaporator and a compressor, a deicing device is arranged on one side of the drying device close to the inside, an ice breaking cone is arranged on one side of the deicing device, which faces the drying device, in a one-to-one correspondence manner between ice breaking hammers and gaps of the drying device, an elastic piece is arranged between the deicing device and the inner wall of the fan coil, electromagnets are arranged on the edge of the drying device, and corresponding armatures are.
Preferably, the drying device is arranged at the end part of the fresh air inlet and only dries the fresh air.
Preferably, the drying device comprises a fixing part fixedly connected with the fan coil, a supporting pipe is transversely arranged on the fixing part, the supporting pipe is made of a good heat conductor, and the end face of the supporting pipe is fixedly connected with a plurality of copper sheets.
Preferably, the supporting tube and the copper sheets are provided with a plurality of bending sections, and the combination of any two adjacent copper sheets and copper sheets is symmetrical.
Preferably, the deicing device comprises an installation plate which is in sliding connection with the fan coil, the installation plate is provided with a support plate which is in the same direction as the support tube, a convex ice breaking cone is fixedly connected to the support plate, the top of the ice breaking cone shrinks, the bottom of the ice breaking cone protrudes towards two sides, and the convex side wall of the bottom of the ice breaking cone is provided with scraping teeth.
The invention has the following beneficial effects:
1. this a purification virus killing system for central air conditioning air intake and return air inlet carries out the drying through drying device to the new trend that gets into, and the new trend after the drying mixes with the return air and passes through electrostatic purification device again and filter, on the one hand, makes the air keep being comparatively dry state, guarantees the electric level and attaches electricity and electrostatic absorption effect, guarantees all to carry out better disinfection filtration to new trend and cold wind, and on the other hand reduces microthermal influence, reduces extra power consumption.
2. This a purification virus killing system for central air conditioning air intake and return air inlet, because drying device has dried the air, it is lower at the air humidity that the pipeline flows, consequently the phenomenon that condenses into ice is also less, guarantees the smoothness that the pipeline air flows, guarantees the change of indoor air muddy air.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of a drying apparatus according to the present invention;
FIG. 3 is a schematic view of a deicer assembly according to the present invention;
FIG. 4 is a schematic structural view of the ice-breaking cone of the present invention.
In the figure: 1. a fan coil; 2. a filtration device; 3. an electrostatic purifying device; 4. a drying device; 41. A housing; 42. supporting a tube; 43. a copper sheet; 5. exchanging pipes; 6. a water circulating pump; 7. a heat exchange tube section; 8. A de-icing device; 81. mounting a plate; 82. a support plate; 83. breaking ice cones; 9. an elastic member; 10. an armature; 11. an electromagnet; 12. an air-conditioning copper pipe; 13. fresh air inlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Please refer to fig. 1, a purification and sterilization system for an air inlet and an air return port of a central air conditioner, which includes a fan coil 1, the fan coil 1 is communicated with an air return port fresh air inlet 13 and an air supply port, the air supply port of the fan coil 1 is provided with a filtering device 2, a static purification device 3 is further arranged in the fan coil 1, the static purification device 3 is arranged between a collection section of the fresh air inlet 13 and the air return port and the air supply port, the static purification device 3 includes a housing, an electric needle mounting bracket, and an ifD dust collection module, the housing is hollow, the outer wall of the housing is matched with the structure of the air return port, the electric needle mounting bracket and the ifD dust collection module are sequentially arranged inside the housing along the direction from the air return port to the air supply port, an electric needle is fixedly mounted on the electric needle mounting bracket, a hollow channel is arranged in. An ionization device is installed on one side of an air return opening of the fan coil, an electric needle is also arranged on the ionization device, the needle point of the electric needle faces the outer side direction of the air return opening, air ionization can be carried out on passing air, dust microparticles passing through are electrified, and bacteria and viruses attached to the dust microparticles are inactivated. A drying device 4 is fixedly arranged on one side of the electrostatic purification device 3 far away from the air supply outlet, water vapor in the air naturally condenses into water when encountering the cooler drying device 4 to dry the air, the drying device 4 is communicated with an exchange tube 5, a circulating water pump 6 is arranged on the exchange tube 5, the exchange tube 5 is provided with a heat exchange tube section 7, the heat exchange tube section 7 is wound on an air-conditioning copper tube 12 between an air-conditioning evaporator and a compressor, the evaporated refrigerant has lower temperature, the part wound on the copper tube has better heat conduction performance, the pipelines of other parts are made of heat insulation materials or are externally wrapped by heat insulation materials, a deicing device 8 is arranged on one side of the drying device 4 close to the inner part, an ice breaking cone is arranged on one side of the deicing device 8 facing the drying device 4, the ice breaking hammers correspond to the gaps of the drying device 4 one by one to one, and an elastic piece 9 is arranged between the deicing, elastic component 9 makes defroster 8 get back to the normal position, and drying device 4's edge is equipped with electro-magnet 11, and defroster 8's corresponding position is equipped with corresponding armature 10, makes defroster 8 and drying device 4 be close to each other, and then passes in and out the ice of caking in drying device 4 gap, and new trend air inlet 13 downward sloping sets up to fall down with broken ice-cube.
The air return inlet is provided with electricity to inactivate passing bacteria and viruses, so that most of bacteria and harmful substances in the air cannot enter a fan coil and a central pipeline from the air return inlet, the harmful substances cannot enter more rooms along the pipeline, the propagation of the bacteria and the viruses through the central air conditioner is effectively inhibited, and the central air conditioning system with the return air purification function, which meets the requirements after epidemic situations, is assembled at lower cost.
In addition, in order to ensure the purification effect, the voltage of the connected external power supply is 8000-10000 v, and due high-voltage electricity-proof measures and warnings are required to be made around the equipment, which is not described herein.
Wherein, drying device 4 locates the tip of new trend air inlet 13, only carries out the drying to the new trend, avoids drying device 4 excessively to reduce the temperature of air, increases the energy consumption.
Referring to fig. 2, the drying device 4 includes a fixing member 41 fixedly connected to the fan coil 1, the fixing member 41 is transversely provided with support pipes 42, the support pipes 42 are distributed along the same direction, so as to facilitate insertion of the deicing device 8, the fixing member 41 and the support pipes 42 are both hollow, the cooling liquid in the fixing member 41 and the support pipes 42 flows in a single direction, the support pipes 42 are made of good thermal conductors, the end surfaces of the support pipes 42 are fixedly connected with a plurality of copper sheets 43, the copper sheets 43 are at a temperature lower than the air temperature under the action of the cooling liquid, and when the outside air enters, the copper sheets are rapidly cooled and condensed.
The supporting tube 42 and the copper sheets 43 are provided with a plurality of bending sections, so that the contact area with air is increased, the moisture condensation capacity is increased, the combination of any two adjacent copper sheets 43 and the copper sheets 43 is symmetrical, and the bent gaps are easy to condense moisture and intensively freeze, so that the subsequent deicing of the deicing device 8 can be realized.
Referring to fig. 3, the deicing device 8 includes a mounting plate 81 slidably connected to the fan coil 1, the mounting plate 81 has a supporting plate 82 in the same direction as the supporting tube 42, a protruding ice-breaking cone 83 is fixedly connected to the supporting plate 82, the top of the ice-breaking cone 83 is contracted, the bottom of the ice-breaking cone 83 is protruded to both sides, and the protruding sidewall of the bottom is provided with scraping teeth, so as to improve the capability of scraping ice.
The working principle and the working process of the invention are as follows:
when outside air humidity increases, turn on circulating water pump 6, it is that the coolant liquid in exchange pipe 5 and drying device 4 flows, and the coolant liquid is cooled down under the effect of copper pipe, and the temperature is less than ambient temperature, and during the coolant liquid transmits low temperature to drying device 4 afterwards, when the new trend gets into, the steam in the air meets the condensation knot and discharges, makes the air humidity who gets into be in lower state.
In winter, water vapor can be condensed into ice on the drying device 4, the electromagnet 11 is started regularly, the electromagnet 11 drives the elastic part 9 to be combined with the drying device 4 regularly, when the elastic part 9 is combined with the drying device 4, the ice breaking cone 83 penetrates through the gap of the drying device 4 to scrape off the ice condensed on the drying device 4, and the drying device 4 is always in a good ventilation state.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a purify virus killing system for central air conditioning air intake and return air inlet, includes fan coil (1), fan coil (1) intercommunication has return air inlet, new trend air inlet (13) and supply-air outlet, the supply-air outlet of fan coil (1) is equipped with filter equipment (2), still be equipped with electrostatic purification device (3) in fan coil (1), electrostatic purification device (3) are located between collection section and the supply-air outlet of new trend air inlet (13) and return air inlet, its characterized in that:
an ionization device is installed on one side of an air return opening of the fan coil and comprises an electrode needle, and the needle point of the electrode needle faces the outer side direction of the air return opening, so that air ionization can be performed on passing air, dust microparticles are electrified, and bacteria and viruses attached to the dust microparticles are inactivated;
a drying device (4) is fixedly arranged on one side of a fresh air inlet (13) of the fan coil (1), the drying device (4) is communicated with an exchange pipe (5), a circulating water pump (6) is arranged on the exchange pipe (5), the exchange tube (5) is provided with a heat exchange tube section (7), the heat exchange tube section (7) is wound on an air-conditioning copper tube (12) between an air-conditioning evaporator and a compressor, a deicing device (8) is arranged on one side of the drying device (4) close to the inside, an ice breaking cone is arranged on one side of the deicing device (8) facing the drying device (4), and the ice breaking hammers correspond to the gaps of the drying device (4) one by one, an elastic piece (9) is arranged between the deicing device (8) and the inner wall of the fan coil (1), an electromagnet (11) is arranged at the edge of the drying device (4), and a corresponding armature (10) is arranged at the corresponding position of the deicing device (8).
2. The system of claim 1, wherein the air inlet and the air return of the central air conditioner are provided with a cleaning and sterilizing device, and the cleaning and sterilizing device comprises: the drying device (4) is arranged at the end part of the fresh air inlet (13) and only dries fresh air.
3. The system of claim 1, wherein the air inlet and the air return of the central air conditioner are provided with a cleaning and sterilizing device, and the cleaning and sterilizing device comprises: the drying device (4) comprises a fixing piece (41) fixedly connected with the fan coil (1), a supporting pipe (42) is transversely arranged on the fixing piece (41), the supporting pipe (42) is made of a good heat conductor, and the end face of the supporting pipe (42) is fixedly connected with a plurality of copper sheets (43).
4. The system of claim 3, wherein the air inlet and the air return of the central air conditioner are provided with a cleaning and sterilizing device, and the cleaning and sterilizing device comprises: the supporting tube (42) and the copper sheets (43) are provided with a plurality of bending sections, and the combination of any two adjacent copper sheets (43) and copper sheets (43) is symmetrical.
5. The system of claim 4, wherein the air inlet and the air return of the central air conditioner are provided with a cleaning and sterilizing device, and the cleaning and sterilizing device comprises: the deicing device (8) comprises a mounting plate (81) which is in sliding connection with the fan coil (1), the mounting plate (81) is provided with a supporting plate (82) which is in the same direction as the supporting tube (42), a convex ice breaking cone (83) is fixedly connected to the supporting plate (82), the top of the ice breaking cone (83) shrinks, the bottom of the ice breaking cone (83) protrudes towards two sides, and the convex side wall of the bottom of the ice breaking cone is provided with scraping teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110077587.6A CN112856622B (en) | 2021-01-20 | 2021-01-20 | Purification and disinfection system for air inlet and air return inlet of central air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110077587.6A CN112856622B (en) | 2021-01-20 | 2021-01-20 | Purification and disinfection system for air inlet and air return inlet of central air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112856622A true CN112856622A (en) | 2021-05-28 |
| CN112856622B CN112856622B (en) | 2022-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110077587.6A Active CN112856622B (en) | 2021-01-20 | 2021-01-20 | Purification and disinfection system for air inlet and air return inlet of central air conditioner |
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| Country | Link |
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| CN (1) | CN112856622B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040018125A1 (en) * | 2002-07-23 | 2004-01-29 | Yang Chien Ou | Sterilizing photo catalyst device of air conditioner |
| JP2006153382A (en) * | 2004-11-30 | 2006-06-15 | Mitsubishi Electric Corp | Refrigeration air conditioning device |
| JP2010091227A (en) * | 2008-10-10 | 2010-04-22 | Panasonic Corp | Air conditioner |
| CN104654456A (en) * | 2014-08-13 | 2015-05-27 | 戴若夫 | Haze removing air conditioner with washing function |
| CN105972748A (en) * | 2016-06-07 | 2016-09-28 | 上海赛菲环境科技股份有限公司 | Air path circulating system, method and applicable novel fan |
| CN107965943A (en) * | 2017-12-22 | 2018-04-27 | 瀚润联合高科技发展（北京）有限公司 | A kind of heat pump unit |
| CN108444002A (en) * | 2018-04-19 | 2018-08-24 | 中创意德（北京）科技发展有限公司 | Confined space central air-conditioning return air inlet air cleaning facility |
| CN209524620U (en) * | 2018-12-13 | 2019-10-22 | 安徽国风塑业股份有限公司 | Automatic de-icing drainage arrangement |
-
2021
- 2021-01-20 CN CN202110077587.6A patent/CN112856622B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040018125A1 (en) * | 2002-07-23 | 2004-01-29 | Yang Chien Ou | Sterilizing photo catalyst device of air conditioner |
| JP2006153382A (en) * | 2004-11-30 | 2006-06-15 | Mitsubishi Electric Corp | Refrigeration air conditioning device |
| JP2010091227A (en) * | 2008-10-10 | 2010-04-22 | Panasonic Corp | Air conditioner |
| CN104654456A (en) * | 2014-08-13 | 2015-05-27 | 戴若夫 | Haze removing air conditioner with washing function |
| CN105972748A (en) * | 2016-06-07 | 2016-09-28 | 上海赛菲环境科技股份有限公司 | Air path circulating system, method and applicable novel fan |
| CN107965943A (en) * | 2017-12-22 | 2018-04-27 | 瀚润联合高科技发展（北京）有限公司 | A kind of heat pump unit |
| CN108444002A (en) * | 2018-04-19 | 2018-08-24 | 中创意德（北京）科技发展有限公司 | Confined space central air-conditioning return air inlet air cleaning facility |
| CN209524620U (en) * | 2018-12-13 | 2019-10-22 | 安徽国风塑业股份有限公司 | Automatic de-icing drainage arrangement |
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| Publication number | Publication date |
|---|---|
| CN112856622B (en) | 2022-03-25 |
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