CN111442443A - Evaporative cooling air conditioning unit with catkin filtering function - Google Patents
Evaporative cooling air conditioning unit with catkin filtering function Download PDFInfo
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- CN111442443A CN111442443A CN202010313179.1A CN202010313179A CN111442443A CN 111442443 A CN111442443 A CN 111442443A CN 202010313179 A CN202010313179 A CN 202010313179A CN 111442443 A CN111442443 A CN 111442443A
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- evaporative cooling
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
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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
- F24F13/02—Ducting arrangements
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
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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
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
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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)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
Abstract
The invention discloses an evaporative cooling air conditioning unit with catkin filtering function, which comprises a unit shell, wherein an upper air duct has the structure that: an inclined air exhaust duct is arranged on the left side of the upper air duct, and an inclined air outlet is arranged above the air exhaust duct; the structure of lower wind channel does: the two opposite side walls of the unit shell are provided with an air inlet and an air outlet, the center in the lower air duct is provided with a vertical pipe indirect evaporation cooling unit and a mechanical refrigeration unit, the left side of the unit shell is provided with a rotary wheel type filter, a dust removing area of the rotary wheel type filter is positioned in the lower air duct, a regeneration area is positioned in the upper air duct, and a coarse effect filtering section is arranged between the dust removing area of the rotary wheel type filter and the vertical pipe indirect evaporation cooling unit. The evaporative cooling air conditioning unit with the catkin filtering function combines the rotary wheel type filter with mechanical refrigeration and evaporative cooling, and solves the problem that the running efficiency is reduced because a coarse filter screen cannot filter sand blown catkins in the prior art.
Description
Technical Field
The invention belongs to the technical field of air conditioning equipment, and relates to an evaporative cooling air conditioning unit with a catkin filtering function.
Background
With the rapid development of economy and the continuous improvement of science and technology, the living standard of people is improved, an air conditioner becomes a necessity for maintaining indoor comfort, the traditional mechanical refrigeration air conditioning mode faces transformation and upgrading under the double pressure of energy conservation and emission reduction and operation cost reduction, and the energy conservation research of the air conditioner industry is urgently needed to be developed; the evaporative cooling air conditioning technology has the unique advantages of energy conservation, low carbon, economy and health, but due to the locality and seasonality of evaporative cooling, the refrigerating capacity and the air supply temperature are greatly influenced by external environmental factors. The mechanical refrigeration technology can prepare cold energy with relatively stable temperature, but has relatively large energy consumption, and the evaporative cooling and the mechanical refrigeration are combined, so that the stability and the reliability of the operation of the equipment can be improved, the evaporative cooling equipment can be optimized, and the mechanical refrigeration performance can be improved.
Most of filter devices used by most of conventional evaporative coolers are coarse filter screens, which can remove dust and purify air, but are easily blocked by sand blown catkins in flying seasons and areas where the flying sand frequently occurs, so that the purification purpose cannot be well achieved, and meanwhile, the filter screens are blocked to influence the air inlet of the unit, thereby reducing the operation efficiency.
Disclosure of Invention
The invention aims to provide an evaporative cooling air conditioning unit with a catkin filtering function, which combines a rotary wheel type filter with mechanical refrigeration and evaporative cooling and solves the problem that a coarse filter screen in the prior art cannot filter sand blown catkins, so that the running efficiency is reduced.
The evaporative cooling air conditioning unit comprises a unit shell, wherein an upper air duct and a lower air duct which are vertically distributed are formed in the unit shell; the air conditioner comprises a unit shell, a lower air duct, a rotary wheel type filter, a coarse filter section, an expansion valve, a vertical pipe indirect evaporation cooling unit, an evaporator and a blower, wherein the two corresponding side walls of the unit shell are respectively provided with an air inlet and an air outlet, the lower air duct is internally provided with the rotary wheel type filter, the coarse filter section, the expansion valve, the vertical pipe indirect evaporation cooling unit, the evaporator and the blower in sequence according to the air inlet flow direction, the side wall of the unit shell is positioned above the air inlet and is provided with an exhaust duct corresponding to the upper air duct, the rotary wheel type filter and the vertical pipe indirect evaporation cooling unit are arranged through the upper air duct and the lower air duct, a condenser is arranged between the vertical pipe indirect evaporation cooling unit and the rotary wheel type filter in the upper air duct, one side of the vertical pipe indirect evaporation cooling unit facing the.
The present invention is also characterized in that,
the dust removal area of the rotary wheel type filter is positioned in the lower air duct, and the regeneration area of the rotary wheel type filter is positioned in the upper air duct.
The vertical pipe indirect evaporative cooling unit comprises a spiral vertical pipe indirect evaporative cooler, a water distribution device, a water baffle and a secondary fan are sequentially arranged above the spiral vertical pipe indirect evaporative cooler from bottom to top, a secondary air outlet is formed in one side, close to the rotary wheel type filter, between the water baffle and the secondary fan, of the secondary fan, a water storage tank is arranged below the spiral vertical pipe indirect evaporative cooler, and the water storage tank is connected with the water distribution device through a water supply pipe.
And a secondary air valve is arranged in the secondary air outlet.
The water supply pipe is provided with a gate valve and a circulating water pump.
A ball float valve is arranged in the water storage tank.
The surface of the rotary wheel type filter is provided with a filter screen.
The unit shell is positioned in the upper air duct and is internally provided with a P L C electric cabinet, and the P L C electric cabinet is connected with the compressor through a line.
An exhaust fan is also arranged between the rotary wheel type filter and the condenser, the exhaust fan is an axial flow fan, and the air feeder is a centrifugal fan.
The air exhaust duct is the shape of an inverted right trapezoid, and an air outlet is arranged above the air exhaust duct and is arranged to be inclined.
The invention has the advantages that
(1) The invention adopts the wheel filter to filter catkin in the air, fresh air filters catkin in the air through a fresh air side semicircle (filtering area) of the wheel filter and is attached to the surface of the wheel, simultaneously, exhaust air reversely passes through an exhaust air side semicircle (regeneration area) of the wheel filter, the catkin attached to the surface of the wheel is blown down to complete the regeneration of the filter, and the wheel filter is connected with the motor through a belt to complete the rotation.
(2) The air conditioning unit has diversified operation modes, combines the evaporative cooling system with the mechanical refrigeration system, switches the operation modes according to meteorological conditions and the temperature and humidity requirements in the building, solves the problems of limited cooling amplitude and large energy consumption when the evaporative cooling system or the mechanical refrigeration system is used independently, and realizes the complementary advantages of evaporative cooling and mechanical refrigeration.
(3) The air conditioning unit adopts the spiral vertical tube type indirect evaporative cooler, secondary air and spray water are subjected to direct evaporative cooling in wet channels in the vertical tube, primary air flows through dry channels on the outer side of the tube and is subjected to equal-humidity cooling by contacting with the tube wall, and the air flow channel on the outer side of the tube is not easy to block and is easy to clean; the spiral pipe type is adopted, so that the heat exchange area and the heat exchange contact time are increased, the flow state of circulating water in the pipe is wall-attached spiral flow, the convection heat transfer coefficient of the circulating water is increased, and the blockage problem in the heat exchange pipe can be effectively relieved due to the scouring effect from top to bottom.
(4) The air conditioning unit of the invention arranges the air outlet above the unit, prevents catkin blown from the air outlet from being sucked into the unit again by the air inlet, adopts the inclined air outlet, and simultaneously arranges the inclined air outlet at the tail end of the upper air duct in order to ensure that the blown catkin can be discharged out of the unit more smoothly.
Drawings
FIG. 1 is a schematic diagram of an evaporative cooling air conditioning unit with catkin filtering function according to the present invention;
FIG. 2 is a schematic structural diagram of a rotary filter in an evaporative cooling air conditioning unit with catkin filtering function according to the present invention;
FIG. 3 is a schematic structural diagram of a riser indirect evaporative cooling unit in the evaporative cooling air conditioning unit with catkin filtering function according to the present invention.
In the figure, 1, an air inlet, 2, a rotary wheel type filter, 3, a coarse filter section, 4, an expansion valve, 5, a spiral vertical pipe type indirect evaporative cooler, 6, a water storage tank, 7, a circulating water pump, 8, a ball float valve, 9, a gate valve, 10, an evaporator, 11, a blower, 12, an air supply outlet, 13, a P L C electric cabinet, 14, a compressor, 15, a water supply pipe, 16, a water baffle, 17, a water distribution device, 18, a secondary air valve, 19, a secondary fan, 20, a secondary fan bracket, 21, a condenser, 22, an exhaust fan, 23, an exhaust outlet, 24, a unit shell, 25, an exhaust duct, 26, a secondary air outlet, 27, a filter screen, 28, a motor and 29 are arranged.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The evaporative cooling air conditioning unit with the catkin filtering function has the structure shown in figure 1 and comprises a unit shell 24, wherein an upper air duct and a lower air duct which are vertically distributed are formed in the unit shell 24; an air inlet 1 and an air supply outlet 12 are respectively arranged at the positions of the two corresponding side walls of the unit shell corresponding to the lower air duct, a rotary wheel type filter 2, a coarse filter section 3, an expansion valve 4, a vertical pipe indirect evaporation cooling unit, an evaporator 10 and a blower 11 are sequentially arranged in the lower air duct according to the air inlet flow direction, an exhaust duct 25 is arranged at the position of the side wall of the unit shell 24 above the air inlet 1 corresponding to the upper air duct, the rotary wheel type filter 2 and the vertical pipe indirect evaporation cooling unit are arranged by penetrating through the upper air duct and the lower air duct, a condenser 21 is arranged in the upper air duct between the vertical pipe indirect evaporation cooling unit and the rotary wheel type filter 2, a secondary air outlet 26 is arranged at one side of the vertical pipe indirect evaporation cooling unit facing the condenser 21, a compressor 14 is also arranged in the upper air duct above the evaporator 10, and the compressor 14, the evaporator 10, the condenser 21, the coarse filter section 3 adopts a coarse filter.
As shown in fig. 2, the dust removing area of the rotary filter 2 is located in the lower air duct, and the regeneration area of the rotary filter 2 is located in the upper air duct.
As shown in fig. 3, the riser indirect evaporative cooling unit includes a spiral riser indirect evaporative cooler 5, a water distribution device 17, a water baffle 16 and a secondary air fan 19 are sequentially arranged above the spiral riser indirect evaporative cooler 5 from bottom to top, a secondary air outlet 26 is arranged on one side of the water baffle 16 and the secondary air fan 19 close to the rotary wheel type filter 2, a water storage tank 6 is arranged below the spiral riser indirect evaporative cooler 5, the water storage tank 6 is connected with the water distribution device 17 through a water supply pipe 15, the water baffle 16 is a corrugated water baffle, and the secondary air fan 19 is installed on a secondary air fan bracket 20.
The secondary air outlet 26 is provided with a secondary air valve 18 therein.
The water supply pipe 15 is provided with a gate valve 9 and a circulating water pump 7.
A ball float valve 8 is arranged in the water storage tank 6.
The surface of the rotary wheel type filter 2 is provided with a filter screen 27.
The unit shell 24 is positioned in the upper air duct and internally provided with a P L C electric cabinet 13, and the P L C electric cabinet 13 is connected with the compressor 14 through a line.
An exhaust fan 22 is further arranged between the rotary wheel type filter 2 and the condenser 21, the exhaust fan 22 is an axial flow fan, and the blower 11 is a centrifugal fan.
The air exhaust duct 25 is in a shape of an inverted right trapezoid, an air exhaust port 23 is arranged above the air exhaust duct 25, and the air exhaust port 23 is arranged in an inclined shape.
The motor 28 is also arranged in the unit shell 24, and the motor 28 and the rotary wheel type filter 2 are in transmission connection through a belt 29.
The working principle of the evaporative cooling air conditioning unit with the catkin filtering function is as follows:
(1) indirect evaporative cooling mode:
when the outdoor temperature and humidity are lower than the set temperature and humidity of the P L C electric cabinet 13, only the vertical pipe indirect evaporative cooling unit is opened, the compressor 14 is closed, outdoor fresh air enters the unit from the air inlet 1, is filtered by the dedusting area of the rotary wheel type filter 2 and the coarse effect filtering section 3 and then reaches the vertical pipe indirect evaporative cooling unit, the secondary air and spray water are subjected to direct evaporative cooling in the wet channel in the vertical pipe, the primary air flows through the dry channel outside the pipe and is subjected to equal wet cooling in contact with the pipe wall, and the cooled primary air is sent into the room by the air feeder 11.
The secondary air enters the exhaust duct 25 from the secondary air valve 18, passes through the regeneration area of the rotary wheel type filter 2 under the action of the exhaust fan 22, takes away the catkin attached to the surface of the rotary wheel type filter 2 and then is exhausted out of the unit.
(2) Indirect evaporative cooling-mechanical refrigeration mode:
under the high temperature and high humidity working condition, when the outdoor temperature and humidity are higher than the set temperature and humidity of the P L C electric cabinet 13, only the vertical pipe indirect evaporation cooling unit is opened, the indoor temperature and humidity requirements cannot be met, at the moment, the compressor 14 is opened under the control of the P L C electric cabinet 13 to operate in a compound mode, primary air cooled by equal humidity flows through the evaporator 10 in the vertical pipe indirect evaporation cooling unit, and the primary air is sent into the room by the air feeder 11 after being cooled and dehumidified.
The secondary air enters the exhaust duct 25 from the secondary air valve 18, flows through the condenser 21, takes away the heat of the condenser 21, passes through the regeneration area of the rotary wheel type filter 2 under the action of the exhaust fan 22, takes away the catkin attached to the surface of the rotary wheel type filter 2, and then is discharged out of the unit.
Claims (10)
1. The evaporative cooling air conditioning unit with the catkin filtering function is characterized by comprising a unit shell (24), wherein an upper air duct and a lower air duct which are vertically distributed are formed in the unit shell (24); the air conditioning unit is characterized in that air inlets (1) and air outlets (12) are respectively arranged at positions of two corresponding side walls of the unit shell and corresponding to a lower air duct, a rotary wheel type filter (2), a coarse filter section (3), an expansion valve (4), a vertical pipe indirect evaporation cooling unit, an evaporator (10) and a blower (11) are sequentially arranged in the lower air duct according to an air inlet flow direction, an exhaust duct (25) is arranged at a position, corresponding to an upper air duct, of the side wall of the unit shell (24) above the air inlets (1), the rotary wheel type filter (2) and the vertical pipe indirect evaporation cooling unit penetrate through the upper air duct and the lower air duct, a condenser (21) is arranged between the vertical pipe indirect evaporation cooling unit and the rotary wheel type filter (2) in the upper air duct, and a secondary air outlet (26) is arranged at one side of the vertical pipe indirect, and a compressor (14) is also arranged above the evaporator (10) in the upper air duct, and the compressor (14), the evaporator (10), the condenser (21) and the expansion valve (4) are sequentially connected through a pipeline to form a closed loop.
2. Evaporative cooling air conditioning unit as claimed in claim 1, characterized in that the dust removal zone of the rotary filter (2) is located in the lower air duct and the regeneration zone of the rotary filter (2) is located in the upper air duct.
3. The evaporative cooling air conditioning unit as recited in claim 1 or 2, wherein the riser indirect evaporative cooling unit comprises a spiral riser indirect evaporative cooler (5), a water distribution device (17), a water baffle (16) and a secondary air fan (19) are sequentially arranged above the spiral riser indirect evaporative cooler (5) from bottom to top, the secondary air outlet (26) is arranged on one side, close to the rotary wheel type filter (2), between the water baffle (16) and the secondary air fan (19), a water storage tank (6) is arranged below the spiral riser indirect evaporative cooler (5), and the water storage tank (6) and the water distribution device (17) are connected through a water supply pipe (15).
4. Evaporative cooling air conditioning unit according to claim 3, characterised in that a secondary air valve (18) is provided in the secondary air outlet (26).
5. Evaporative cooling air conditioning unit according to claim 3, characterized in that the water supply pipe (15) is provided with a gate valve (9) and a circulating water pump (7).
6. Evaporative cooling air conditioning unit according to claim 3, characterized in that a float valve (8) is provided in the reservoir (6).
7. Evaporative cooling air conditioning unit according to claim 1 or 2, characterised in that the surface of the rotary filter (2) is provided with a filter screen (27).
8. The evaporative cooling air conditioning assembly as set forth in claim 1 or claim 2, wherein the assembly housing (24) is provided with a P L C electrical cabinet (13) in the upper air duct, the P L C electrical cabinet (13) being connected to the compressor (14) by a line.
9. The evaporative cooling air conditioning unit as set forth in claim 1 or 2, wherein an exhaust fan (22) is further provided between the rotary filter (2) and the condenser (21), the exhaust fan (22) being an axial fan, and the blower (11) being a centrifugal fan.
10. The evaporative cooling air conditioning unit as set forth in claim 9, wherein the air outlet duct (25) is in the shape of an inverted trapezoid, and an air outlet (23) is provided above the air outlet duct (25), and the air outlet (23) is arranged in an inclined shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010313179.1A CN111442443A (en) | 2020-04-20 | 2020-04-20 | Evaporative cooling air conditioning unit with catkin filtering function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010313179.1A CN111442443A (en) | 2020-04-20 | 2020-04-20 | Evaporative cooling air conditioning unit with catkin filtering function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111442443A true CN111442443A (en) | 2020-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010313179.1A Pending CN111442443A (en) | 2020-04-20 | 2020-04-20 | Evaporative cooling air conditioning unit with catkin filtering function |
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| CN (1) | CN111442443A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669810A (en) * | 2021-08-04 | 2021-11-19 | 中兴通讯股份有限公司 | Indirect evaporative cooling apparatus |
| CN114377523A (en) * | 2021-12-09 | 2022-04-22 | 浙江华珍科技有限公司 | Gas filtering device for gas detection |
| WO2022110670A1 (en) * | 2020-11-26 | 2022-06-02 | 华为数字能源技术有限公司 | Indirect evaporative cooling device |
| CN115200137A (en) * | 2022-07-14 | 2022-10-18 | 珠海横琴润霖生物科技有限公司 | Ultraviolet ray sterilizer |
| CN117948658A (en) * | 2024-03-21 | 2024-04-30 | 常州东立冷冻科技有限公司 | Evaporation cooling all-in-one machine with catkin filtering function |
-
2020
- 2020-04-20 CN CN202010313179.1A patent/CN111442443A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022110670A1 (en) * | 2020-11-26 | 2022-06-02 | 华为数字能源技术有限公司 | Indirect evaporative cooling device |
| CN113669810A (en) * | 2021-08-04 | 2021-11-19 | 中兴通讯股份有限公司 | Indirect evaporative cooling apparatus |
| CN113669810B (en) * | 2021-08-04 | 2022-11-11 | 中兴通讯股份有限公司 | Indirect evaporative cooling apparatus |
| CN114377523A (en) * | 2021-12-09 | 2022-04-22 | 浙江华珍科技有限公司 | Gas filtering device for gas detection |
| CN115200137A (en) * | 2022-07-14 | 2022-10-18 | 珠海横琴润霖生物科技有限公司 | Ultraviolet ray sterilizer |
| CN115200137B (en) * | 2022-07-14 | 2023-09-01 | 珠海横琴润霖生物科技有限公司 | Ultraviolet sterilizer |
| CN117948658A (en) * | 2024-03-21 | 2024-04-30 | 常州东立冷冻科技有限公司 | Evaporation cooling all-in-one machine with catkin filtering function |
| CN117948658B (en) * | 2024-03-21 | 2024-05-24 | 常州东立冷冻科技有限公司 | Evaporation cooling all-in-one machine with catkin filtering function |
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