CN214469042U - Indirect evaporative cooling device capable of preventing condensation and frosting - Google Patents
Indirect evaporative cooling device capable of preventing condensation and frosting Download PDFInfo
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- CN214469042U CN214469042U CN202023342618.6U CN202023342618U CN214469042U CN 214469042 U CN214469042 U CN 214469042U CN 202023342618 U CN202023342618 U CN 202023342618U CN 214469042 U CN214469042 U CN 214469042U
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Abstract
The utility model relates to an air conditioning equipment technical field, more specifically relates to an indirect evaporative cooling device of preventing dewfall frosting, include: the fresh air pipe, the return air pipe, the bypass air pipe, the spray assembly and the heat exchanger; the fresh air pipe and the return air pipe respectively penetrate through the heat exchanger; a bypass air pipe air inlet is formed in the pipe wall between the fresh air pipe air outlet and the heat exchanger; a bypass air pipe air outlet is formed in the pipe wall between the fresh air pipe air inlet and the heat exchanger; the bypass air pipe is communicated with the fresh air pipe through a bypass air pipe air inlet and a bypass air pipe air outlet; the spraying component is arranged in the fresh air pipe between the fresh air pipe air inlet and the heat exchanger. The utility model discloses can prevent that the dewfall from frosting.
Description
Technical Field
The utility model relates to an air conditioning equipment technical field, more specifically relates to an indirect evaporative cooling device that prevents dewfall and frost.
Background
With the continuous progress of society and the continuous development of scientific technology, people are more and more concerned about the earth on which people depend to live, and most countries in the world fully recognize the importance of the environment to the development of human beings. All countries adopt active and effective measures to improve the environment and reduce pollution. The most important and urgent problem is the energy problem, which is to be solved fundamentally, except for searching new energy, energy conservation is the key and the most direct and effective important measure at present, and in recent years, through efforts, people have achieved huge achievements in the research of energy conservation technology and product development.
Indirect evaporative cooling technology is gradually favored by people because of its advantages of electricity saving, environmental protection and high efficiency. Indirect evaporative cooling is refrigeration by heat absorption through evaporation of water, and good refrigeration effect can be achieved only under the condition that the used air has large dry-wet bulb temperature difference. Therefore, the indirect evaporative cooling technology is very suitable for the areas with large temperature difference of outdoor dry and wet bulbs in summer. Under the condition that the outdoor temperature is not very high, when the production requirement cannot be met by using the direct evaporative cooling of the water spraying chamber, the production requirement can be met by adopting the water spraying chamber and an indirect evaporative cooling mode under the condition that an artificial cold source is not added. Generally, after the indirect evaporative cooler is used, the temperature and humidity requirements of a workshop can be met in a dry area and a medium humidity area under the condition that mechanical refrigeration is not used. In non-dry areas and workshops with high humidity requirements such as air spinning, spooling and weaving, the air can be treated to the specified temperature and humidity by adopting an indirect cooling technology and combining with an air conditioning mode of a water spraying chamber, so that the aim of saving energy is fulfilled.
The existing indirect evaporative Cooling technology improves the Cooling utilization time of a natural cold source, and greatly reduces the operation requirement of mechanical refrigeration, the Power Use Efficiency (PUE) and the refrigeration load factor (CLF) by combining a heat exchanger and evaporative Cooling in most of the time of a year, thereby achieving the purpose of energy conservation. In order to fully utilize a natural cold source, indirect evaporative cooling is generally used in a low-temperature cold region, but in the low-temperature cold region, after the air flow of fresh air and return air passes through heat and moisture exchange of a heat exchanger, the temperature of the fresh air is too low, so that a return air pipe of the heat exchanger is dewed and frosted due to too low temperature, even the phenomenon of icing and blocking of the return air pipe can occur, and the machine cannot normally run. When the outdoor environment is ice and snow weather, or the temperature difference between day and night of the outdoor environment is large, frosting on the fresh air filter can be caused, the condition of a fresh air pipe is blocked, and the machine cannot normally run. Therefore, there is a need for an indirect evaporative cooling device that prevents condensation and frost formation.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides an indirect evaporative cooling device of preventing dewfall frosting, this indirect evaporative cooling device can prevent the dewfall frosting.
The utility model adopts the technical proposal that:
an indirect evaporative cooling device for preventing condensation and frost formation, comprising: the fresh air pipe, the return air pipe, the bypass air pipe, the spray assembly and the heat exchanger; the fresh air pipe and the return air pipe respectively penetrate through the heat exchanger; a bypass air pipe air inlet is formed in the pipe wall between the fresh air pipe air outlet and the heat exchanger; a bypass air pipe air outlet is formed in the pipe wall between the fresh air pipe air inlet and the heat exchanger; the bypass air pipe is communicated with the fresh air pipe through a bypass air pipe air inlet and a bypass air pipe air outlet; the spraying component is arranged in the fresh air pipe between the fresh air pipe air inlet and the heat exchanger.
Specifically, the indirect evaporative cooling device of the scheme is the same as the existing indirect evaporative cooling technology in the refrigeration principle, and natural cold energy is utilized to cool the indoor space. Firstly, return air and fresh air respectively enter the air pipe from the outside through an air inlet of the return air pipe and an air inlet of the fresh air pipe, and flow to the heat exchanger along the air pipe. Before the fresh air and the fresh air enter the heat exchanger, the fresh air can be pre-cooled firstly, and the pre-cooling is realized by a spraying assembly arranged in the fresh air pipe between an air inlet of the fresh air pipe and the heat exchanger. The spraying assembly sprays water in the fresh air pipe, the fresh air and the sprayed water are subjected to evaporation reaction, and partial heat of the fresh air is absorbed, so that the temperature of the fresh air is reduced. Then, when the return air and the fresh air enter the heat exchanger, the normal-temperature return air and the cooled fresh air exchange heat, the temperature of the return air is reduced, and the temperature of the fresh air is increased. And finally, feeding the cooled return air into a room through an air outlet of the return air duct, and discharging the heated fresh air serving as waste gas from an air outlet of the fresh air duct. In order to prevent the cooling device from dewing and frosting in a low-temperature area, a bypass air pipe is added to the device on the basis of indirect evaporative cooling. Before the heated fresh air is discharged out of the device, part of fresh air enters the bypass air pipe from the air inlet of the bypass air pipe and then flows out of the air outlet of the bypass air pipe to be mixed with fresh air just coming from the air inlet of the fresh air pipe, so that the temperature of air in the pipe is increased, and the phenomenon of condensation and frosting is avoided.
Further, comprising: the controller, the bypass air valve and the exhaust air valve; the controller is respectively connected with the bypass air valve and the exhaust air valve; the bypass air valve is arranged at an air inlet of the bypass ventilation pipe; and the air exhaust valve is arranged at an air outlet of the fresh air pipe.
Specifically, valves are additionally arranged at the air inlet of the bypass ventilation pipe and the air outlet of the fresh air pipe, so that the flow rate of gas in the bypass air pipe and the fresh air pipe is controlled. The controller is used for controlling the opening and closing degree of the bypass air valve and the exhaust air valve, and the gas flow rate is adjusted through the opening and closing degree of the bypass air valve and the exhaust air valve.
Further, comprising: a fresh air temperature and humidity detector and a return air temperature and humidity detector; the fresh air temperature and humidity detector is arranged at an air inlet of the fresh air pipe; the return air temperature and humidity detector is arranged at an air inlet of the return air duct; the controller is respectively connected with the temperature and humidity detector and the return air temperature and humidity detector.
Specifically, install new trend temperature and humidity detector and return air temperature and humidity detector additional to this prevents return air tuber pipe dewfall/frosting better. When the fresh air temperature detected by the fresh air temperature and humidity detector reaches the return air dew point/frosting temperature detected by the return air temperature and humidity detector, the detection result is sent to the controller. And after receiving the detection result, the controller sends a corresponding control instruction to the bypass air valve and the exhaust air valve so as to adjust the opening and closing proportion of the bypass air valve and the exhaust air valve. After the bypass air valve and the exhaust air valve are adjusted in opening and closing proportion by the controller, the temperature-rising fresh air of the corresponding part flows to the air inlet of the fresh air duct through the bypass air duct and is mixed with the fresh air which just enters the fresh air duct, and the temperature of the fresh air is raised to be higher than the dew point/freezing point temperature, so that the dew condensation/frosting of the return air duct is prevented.
Further, comprising: a fresh air filter and an air pressure difference detector; the fresh air filter is arranged at the air inlet of the fresh air pipe; the air pressure difference detector is arranged on the fresh air filter and connected with the controller.
Specifically, install new trend filter and air pressure difference detector additional to this prevents the fresh air tuber pipe frosting better. When outdoor weather is ice and snow weather or the temperature difference between day and night of the environment where the equipment is used is large, the fresh air filter often frosts. When the fresh air temperature detected by the fresh air temperature and humidity detector is continuously lower than a preset temperature value within a certain time, the air pressure difference detector detects the pressure applied to the fresh air filter, if the difference value between the outdoor pressure applied to the fresh air filter and the pressure applied to the fresh air filter in the pipe is larger than a preset threshold value, the frost is formed on the fresh air filter, and the air pressure difference detector sends the detection result to the controller. And after receiving the detection result, the controller sends corresponding control instructions to the bypass air valve and the exhaust air valve, so that the ventilation area of the valve port of the bypass air valve is increased, and the ventilation area of the valve port of the exhaust air valve is reduced. After the bypass air valve and the exhaust air valve execute control instructions through the controller, the flow speed of the temperature-rising fresh air flowing to the air inlet of the fresh air pipe through the bypass air pipe is increased, the occupied proportion of the temperature-rising fresh air in the mixed fresh air (the temperature-rising fresh air is mixed with the fresh air which just enters the fresh air pipe) is increased, and the temperature of the mixed fresh air is further increased, so that the frost of the fresh air filter is melted, and the machine can normally run.
Further, comprising: the system comprises an exhaust air temperature and humidity detector, an evaporator, a condenser and a compressor; the exhaust air temperature and humidity detector and the compressor are respectively connected with the controller; the exhaust temperature and humidity detector is arranged at the air outlet of the return air duct; the evaporator is arranged in the return air pipe between the air outlet of the return air pipe and the heat exchanger; the condenser is arranged in the fresh air pipe between the air outlet of the fresh air pipe and the heat exchanger; the evaporator, the condenser and the compressor are sequentially connected to form a first closed loop.
Specifically, install the humiture detector of airing exhaust additional, whether the return air that detects after the heat exchanger heat transfer reaches preset temperature, if return air temperature is higher than preset temperature, send the testing result for the controller. And after receiving the detection result, the controller sends a corresponding starting instruction to the compressor, and starts a mechanical refrigeration cycle consisting of the evaporator, the condenser and the compressor to further reduce the temperature of return air, so that the return air is delivered indoors after reaching the standard.
Further, comprising: a water pump and a water tank; the water pump is connected with the controller; and the water pump, the water tank and the spraying assembly are sequentially connected to form a second closed loop.
Further, comprising: a blower; the air feeder is arranged in the fresh air pipe between the air outlet of the fresh air pipe and the heat exchanger.
Specifically, a blower is additionally arranged to accelerate the air flow rate of return air.
Further, the bypass air valve is an electric valve or an electromagnetic valve.
Further, the heat exchanger is one of the following: finned heat exchanger, plate heat recovery heat exchanger, heat pipe heat exchanger.
Further, the air pressure difference detector is an air pressure difference switch or an air pressure difference sensor.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the design of the bypass air pipe can effectively prevent condensation/frosting, and the stability of the refrigerating machine is improved.
(2) According to the temperatures detected by the fresh air temperature and humidity detector and the return air temperature and humidity detector, the ratio of the opening and closing of the bypass air valve and the exhaust air valve is adjusted, and the return air pipe is prevented from dewing/frosting.
(3) The pressure of the fresh air filter is detected according to the air pressure difference detector, and the ratio of the opening and closing of the bypass air valve and the exhaust air valve is adjusted to prevent the fresh air filter from frosting.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention;
description of reference numerals: the fresh air duct air inlet 011, the fresh air duct air outlet 012, the return air duct air inlet 021, the return air duct air outlet 022, the bypass air duct air inlet 031, the bypass air duct air outlet 032, the spray assembly 050, the heat exchanger 060, the controller 070, the fresh air temperature and humidity detector 080, the return air temperature and humidity detector 090, the fresh air filter 100, the air pressure difference detector 110, the exhaust air temperature and humidity detector 120, the evaporator 130, the condenser 140, the compressor 150, the water pump 160, the water tank 170 and the blower 180.
Detailed Description
The drawings of the present invention are for illustration purposes only and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Examples
This embodiment provides an indirect evaporative cooling device that condensation frost formation is prevented, and fig. 1 is the utility model discloses a device schematic diagram, as shown in the figure, include: the fresh air pipe, the return air pipe, the bypass air pipe, the spraying component 050 and the heat exchanger 060; the fresh air duct and the return air duct respectively penetrate through the heat exchanger 060; a bypass air pipe air inlet 031 is formed in the pipe wall between the fresh air pipe air outlet 012 and the heat exchanger 060; a bypass air pipe air outlet 032 is formed in the pipe wall between the fresh air pipe air inlet 011 and the heat exchanger 060; the bypass air pipe is communicated with the fresh air pipe through a bypass air pipe air inlet 031 and a bypass air pipe air outlet 032; and the spraying component 050 is arranged in the fresh air pipe between the fresh air pipe air inlet 011 and the heat exchanger 060.
Specifically, the indirect evaporative cooling device of the scheme is the same as the existing indirect evaporative cooling technology in the refrigeration principle, and natural cold energy is utilized to cool the indoor space. Firstly, return air and fresh air respectively enter the air pipes from the outside through the air inlet 021 of the return air pipe and the air inlet 011 of the fresh air pipe, and flow to the heat exchanger 060 along the air pipe pipeline. Before the fresh air and the air enter the heat exchanger 060, the fresh air can be pre-cooled firstly, and the pre-cooling is realized by the spraying component 050 arranged in the fresh air pipe between the air inlet 011 of the fresh air pipe and the heat exchanger 060. Spraying assembly 050 sprays water in the fresh air pipe, and the evaporation reaction takes place for fresh air and spun water, and the partial heat of fresh air is absorbed, has consequently reduced the fresh air temperature. Then, when the return air and the fresh air enter the heat exchanger 060, the normal temperature return air and the cooled fresh air exchange heat, the temperature of the return air decreases, and the temperature of the fresh air increases. Finally, the cooled return air is sent into the room through the return air duct air outlet 022, and the heated fresh air is discharged through the fresh air duct air outlet 012 as waste gas. In order to prevent the cooling device from dewing and frosting in a low-temperature area, a bypass air pipe is added to the device on the basis of indirect evaporative cooling. Before the heated fresh air exhaust device, part of fresh air can enter the bypass air pipe from the bypass air pipe air inlet 031 and then flows out from the bypass air pipe air outlet 032 to be mixed with fresh air just coming from the fresh air pipe air inlet 011, so that the temperature of air in the pipe is increased, and the phenomenon of condensation and frosting is avoided.
Further, comprising: a controller 070, a bypass air valve and an exhaust air valve; the controller 070 is respectively connected with the bypass air valve and the exhaust air valve; the bypass air valve is arranged at an air inlet 031 of the bypass ventilation pipe; the air exhaust valve is arranged at an air outlet 012 of the fresh air duct.
Specifically, valves are additionally arranged at the air inlet 031 of the bypass ventilation pipe and the air outlet 012 of the fresh air pipe, so as to control the flow rate of the air in the bypass air pipe and the fresh air pipe. The controller 070 is used for controlling the opening and closing degree of the bypass air valve and the exhaust air valve, and the flow rate of the gas is adjusted according to the opening and closing degree of the bypass air valve and the exhaust air valve.
Further, comprising: a fresh air temperature and humidity detector 080 and a return air temperature and humidity detector 090; the fresh air temperature and humidity detector 080 is arranged at an air inlet 011 of the fresh air duct; the return air temperature and humidity detector 090 is arranged at an air inlet 021 of a return air duct; the controller 070 is connected with the temperature and humidity detector and the return air temperature and humidity detector 090 respectively.
Specifically, a fresh air temperature and humidity detector 080 and a return air temperature and humidity detector 090 are additionally arranged, so that condensation/frosting of a return air pipe can be better prevented. When the fresh air temperature detected by the fresh air temperature and humidity detector 080 reaches the return air dew point/frosting temperature detected by the return air temperature and humidity detector 090, the detection result is sent to the controller 070. After receiving the detection result, the controller 070 sends a corresponding control instruction to the bypass air valve and the exhaust air valve so as to adjust the opening and closing proportion of the bypass air valve and the exhaust air valve. After the bypass air valve and the exhaust air valve are adjusted in opening and closing proportion by the controller 070, the corresponding part of the heated fresh air flows to the air inlet 011 of the fresh air duct through the bypass air duct and is mixed with the fresh air which just enters the fresh air duct, and the temperature of the fresh air is raised to be higher than the dew point/freezing point temperature, so that the return air duct is prevented from dewing/frosting.
Further, comprising: a fresh air filter 100 and a differential air pressure detector 110; the fresh air filter 100 is arranged at an air inlet 011 of the fresh air duct; the air pressure difference detector 110 is disposed on the fresh air filter 100 and connected to the controller 070.
Specifically, a fresh air filter 100 and an air pressure difference detector 110 are additionally arranged, so that the fresh air duct is better prevented from frosting. When outdoor weather is ice and snow weather or the temperature difference between day and night of the environment where the equipment is used is large, the fresh air filter 100 is prone to frosting. When the fresh air temperature detected by the fresh air temperature and humidity detector 080 is continuously lower than a preset temperature value within a certain time, the air pressure difference detector 110 detects the pressure applied to the fresh air filter 100, if the difference value between the outdoor pressure applied to the fresh air filter 100 and the pressure applied to the fresh air filter 100 is greater than a preset threshold value, it represents that frost is accumulated on the fresh air filter 100, and the air pressure difference detector 110 sends a detection result to the controller 070. After receiving the detection result, the controller 070 sends a corresponding control instruction to the bypass air valve and the exhaust air valve, so that the ventilation area of the valve port of the bypass air valve is increased, and the ventilation area of the valve port of the exhaust air valve is reduced. After the bypass air valve and the exhaust air valve execute control instructions through the controller 070, the flow speed of the temperature-rising fresh air flowing to the fresh air pipe air inlet 011 through the bypass air pipe is increased, the occupied proportion of the temperature-rising fresh air in the mixed fresh air (the temperature-rising fresh air is mixed with the fresh air which just enters the fresh air pipe) is increased, and the temperature of the mixed fresh air is further increased, so that the frost of the fresh air filter 100 is melted, and the machine can normally run.
Further, comprising: an exhaust air temperature and humidity detector 120, an evaporator 130, a condenser 140, and a compressor 150; the exhaust air temperature and humidity detector 120 and the compressor 150 are respectively connected with the controller 070; the exhaust air temperature and humidity detector 120 is arranged at an air outlet 022 of the return air duct; the evaporator 130 is arranged in the return air pipe between the air outlet 022 of the return air pipe and the heat exchanger 060; the condenser 140 is arranged in the fresh air duct between the air outlet 012 of the fresh air duct and the heat exchanger 060; the evaporator 130, the condenser 140 and the compressor 150 are connected in sequence to form a first closed circuit.
Specifically, the exhaust air temperature and humidity detector 120 is additionally installed, whether the return air subjected to heat exchange by the heat exchanger 060 reaches a preset temperature or not is detected, and if the temperature of the return air is higher than the preset temperature, the detection result is sent to the controller 070. After receiving the detection result, the controller 070 sends a corresponding opening instruction to the compressor 150, and opens a mechanical refrigeration cycle formed by the evaporator 130, the condenser 140 and the compressor 150, so that the temperature of return air is further reduced, and the return air is sent into a room after reaching the standard.
Further, comprising: a water pump 160 and a water tank 170; the water pump 160 is connected with the controller 070; the water pump 160, the water tank 170 and the spray assembly 050 are sequentially connected to form a second closed loop.
Further, comprising: a blower 180; the blower 180 is arranged in the fresh air pipe between the fresh air pipe air outlet 012 and the heat exchanger 060.
Specifically, the blower 180 is additionally arranged to accelerate the flow rate of return air.
Further, the bypass air valve is an electric valve or an electromagnetic valve.
Further, the heat exchanger 060 is one of the following: finned heat exchanger, plate heat recovery heat exchanger, heat pipe heat exchanger.
Further, the air pressure difference detector 110 is an air pressure difference switch or an air pressure difference sensor.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not limitations to the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (10)
1. An indirect evaporative cooling device for preventing dew and frost formation, comprising: the fresh air pipe, the return air pipe, the bypass air pipe, the spray assembly and the heat exchanger; the fresh air pipe and the return air pipe respectively penetrate through the heat exchanger; a bypass air pipe air inlet is formed in the pipe wall between the fresh air pipe air outlet and the heat exchanger; a bypass air pipe air outlet is formed in the pipe wall between the fresh air pipe air inlet and the heat exchanger; the bypass air pipe is communicated with the fresh air pipe through a bypass air pipe air inlet and a bypass air pipe air outlet; the spraying component is arranged in the fresh air pipe between the fresh air pipe air inlet and the heat exchanger.
2. The indirect evaporative cooling device for preventing condensation and frost formation according to claim 1, comprising: the controller, the bypass air valve and the exhaust air valve; the controller is respectively connected with the bypass air valve and the exhaust air valve; the bypass air valve is arranged at an air inlet of the bypass ventilation pipe; and the air exhaust valve is arranged at an air outlet of the fresh air pipe.
3. The indirect evaporative cooling device for preventing condensation and frost formation according to claim 2, comprising: a fresh air temperature and humidity detector and a return air temperature and humidity detector; the fresh air temperature and humidity detector is arranged at an air inlet of the fresh air pipe; the return air temperature and humidity detector is arranged at an air inlet of the return air duct; the controller is respectively connected with the temperature and humidity detector and the return air temperature and humidity detector.
4. The indirect evaporative cooling device for preventing condensation and frost formation according to claim 3, comprising: a fresh air filter and an air pressure difference detector; the fresh air filter is arranged at the air inlet of the fresh air pipe; the air pressure difference detector is arranged on the fresh air filter and connected with the controller.
5. The indirect evaporative cooling device for preventing condensation and frost formation according to claim 4, comprising: the system comprises an exhaust air temperature and humidity detector, an evaporator, a condenser and a compressor; the exhaust air temperature and humidity detector and the compressor are respectively connected with the controller; the exhaust temperature and humidity detector is arranged at the air outlet of the return air duct; the evaporator is arranged in the return air pipe between the air outlet of the return air pipe and the heat exchanger; the condenser is arranged in the fresh air pipe between the air outlet of the fresh air pipe and the heat exchanger; the evaporator, the condenser and the compressor are sequentially connected to form a first closed loop.
6. The indirect evaporative cooling device for preventing condensation and frost formation according to claim 5, comprising: a water pump and a water tank; the water pump is connected with the controller; and the water pump, the water tank and the spraying assembly are sequentially connected to form a second closed loop.
7. The indirect evaporative cooling device for preventing condensation and frost formation according to claim 6, comprising: a blower; the air feeder is arranged in the fresh air pipe between the air outlet of the fresh air pipe and the heat exchanger.
8. The indirect evaporative cooling device for preventing condensation and frost formation according to any of claims 2 to 7, wherein the bypass air valve is an electric valve or an electromagnetic valve.
9. The indirect evaporative cooling device for preventing condensation and frost according to any of claims 1 to 7, wherein the heat exchanger is one of the following: finned heat exchanger, plate heat recovery heat exchanger, heat pipe heat exchanger.
10. The indirect evaporative cooling device for preventing condensation and frost according to any of claims 4 to 7, wherein the air pressure difference detector is a air pressure difference switch or an air pressure difference sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023342618.6U CN214469042U (en) | 2020-12-31 | 2020-12-31 | Indirect evaporative cooling device capable of preventing condensation and frosting |
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| CN202023342618.6U CN214469042U (en) | 2020-12-31 | 2020-12-31 | Indirect evaporative cooling device capable of preventing condensation and frosting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112797521A (en) * | 2020-12-31 | 2021-05-14 | 广东申菱环境系统股份有限公司 | Indirect evaporative cooling device capable of preventing condensation and frosting |
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2020
- 2020-12-31 CN CN202023342618.6U patent/CN214469042U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112797521A (en) * | 2020-12-31 | 2021-05-14 | 广东申菱环境系统股份有限公司 | Indirect evaporative cooling device capable of preventing condensation and frosting |
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