KR102637242B1 - Membrane humidification module air conditioner and heating operation method of the membrane humidification module air conditioner - Google Patents

Abstract

The present invention uses a membrane humidification module as a humidity control device and a heat pump as a temperature control device, and operates in a heating mode or humidification heating mode depending on the indoor air conditions to maintain a comfortable indoor environment. In particular, the membrane humidification module is used as a humidity control device. The humidification process through the humidification module occurs due to the difference in water vapor partial pressure between the room temperature water circulating inside the humidifying membrane and the indoor air supplied outside the humidifying membrane, so it is an ultrasonic water spray type humidification method that controls the humidity of the air by spraying water directly. Unlike other methods, water and air come into indirect contact, so problems such as bacterial and mold growth due to condensation around the discharged air can be solved. Also, unlike the steam humidification method, which requires high temperature water of about 100℃ to form steam, it can be used indoors We provide a membrane humidification module air conditioner and a heating operation method of the membrane humidification module air conditioner that can significantly contribute to saving building air conditioning energy by using only the operating power of air and circulating water to achieve the humidification effect of indoor air.

Description

Membrane humidification module air conditioner and heating operation method of the membrane humidification module air conditioner {Membrane humidification module air conditioner and heating operation method of the membrane humidification module air conditioner}

The present invention relates to a membrane humidification module air conditioner and a heating operation method of the membrane humidification module air conditioner. More specifically, during winter heating operation, unlike conventional heat pump systems that only perform indoor heating, indoor heating and humidification are provided. It relates to a membrane humidification module air conditioner that simultaneously provides and a heating operation method of the membrane humidification module air conditioner.

In general, maintaining a constant temperature and humidity in a certain space is called air conditioning, and the device used in this case is called an air conditioning device.

Air conditioning devices include a hot air blower that raises the indoor temperature and an air conditioner that lowers the temperature, and there are also types that combine them into one.

Generally, a refrigeration cycle consists of a compressor, condenser, expansion valve, and evaporator. The evaporator absorbs heat from the high-temperature section and the condenser releases heat to the low-temperature section.

Therefore, if the evaporator absorbs heat from the high temperature section, it can be used as a cooling device such as an air conditioner or refrigerator, and if the condenser releases heat to the low temperature section, it can be used as a heating device (heat pump).

In addition, the evaporator and condenser are a type of heat exchanger, so they consist of a compressor, evaporator, condenser, and expansion valve, and by selectively changing the flow of refrigerant, cooling and heating operations can be implemented as a single device (hereinafter referred to as a "heat pump"). there is.

The indoor unit of a conventional air conditioner for both cooling and heating has a predetermined space inside, an air intake port formed at the bottom, a case formed with an air discharge port formed at the top, a blowing fan provided inside the case, and an upper part of the blowing fan. It consists of an evaporator formed.

Additionally, there is a control unit on the front that supplies power to the indoor and outdoor units and controls wind speed and set temperature.

Additionally, the blowing fan is located inside the air intake port and blows indoor air so that it is sucked into the air intake port and discharged through the evaporator to the air discharge port.

However, conventional air conditioners did not have a humidifier installed, so they had the disadvantage of lowering indoor humidity during indoor heating and drying out the indoor air.

To solve this problem, air conditioners for both cooling, heating and humidification have been provided in the past. In Patent Registration No. 10-0775612 (November 5, 2007), humidification and temperature control are performed using a water spray humidifier and an air source heat pump. .

In this case, a humidifier and a temperature and humidity sensor are installed at the rear of the condenser installed in the indoor unit of the air conditioner, and when dryness of the indoor air is detected, the humidifier is operated to create a comfortable indoor thermal environment in winter. However, the intake air through the humidifier is There is a disadvantage that condensation may occur around the humidifying device in the process of spraying water directly, which may cause problems such as bacterial or mold growth.

The present invention uses a membrane humidification module as a humidity control device and a heat pump as a temperature control device, and operates in a heating mode or humidification heating mode depending on the indoor air conditions to maintain a comfortable indoor environment. In particular, the membrane humidification module is used as a humidity control device. The humidification process through the humidification module occurs due to the difference in water vapor partial pressure between the room temperature water circulating inside the humidifying membrane and the indoor air supplied outside the humidifying membrane, so it is an ultrasonic water spray type humidification method that controls the humidity of the air by spraying water directly. Unlike other methods, water and air come into indirect contact, so problems such as bacterial and mold growth due to condensation around the discharged air can be solved. Also, unlike the steam humidification method, which requires high temperature water of about 100℃ to form steam, it can be used indoors The aim is to provide a membrane humidification module air conditioner and a heating operation method for the membrane humidification module air conditioner that can significantly contribute to saving building air conditioning energy by using only the operating power of air and circulating water to achieve the humidification effect of indoor air. It is for that purpose.

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The membrane humidification module air conditioner according to the present invention includes an intake line for introducing external air; a membrane humidification module connected to the intake line, humidifying the air by evaporating moisture permeated through the membrane surface with air introduced from the intake line, and discharging the humidified air; A compressor that compresses the refrigerant at high temperature and pressure and discharges it; an indoor unit connected to the compressor and a refrigerant flow line, heat-exchanging the high-temperature, high-pressure refrigerant discharged from the compressor and air discharged from the membrane humidification module to heat the air, and discharging the refrigerant condensed through heat exchange; an expansion valve connected to the indoor unit through a line through which refrigerant flows, and expanding and discharging the refrigerant flowing out of the indoor unit; an outdoor unit connected to the expansion valve through a line through which refrigerant flows, and evaporating the refrigerant flowing out of the expansion valve through heat exchange with external air and then discharging the refrigerant; an air supply fan blowing air discharged from the indoor unit into the room; and an air supply line connected to the air supply fan and guiding the air blown by the air supply fan into the room, wherein the membrane humidification module receives circulating water of a corresponding capacity inside, and circulates water received through the lower surface. A first circulating water tank that flows out, an outlet pipe connected at the top to the lower part of the first circulating water tank to guide the circulating water flowing out of the first circulating water tank from the top to the bottom, and a hollow pipe along the length. A plurality of hollow fiber membranes in the form of a tube are arranged at regular intervals from each other to form a bundle, and the lower and upper sides of the outflow pipe are connected, allowing circulating water flowing in through the upper side to flow into the hollow of the hollow fiber membranes. , a membrane module that humidifies the air passing through the surface of the hollow fiber membranes by evaporating moisture permeated to the surface of the hollow fiber membranes with air drawn through the intake line, and the outflow pipe of the membrane module An upper delivery tank, which is provided on the connected upper side and distributes the circulating water flowing in through the outflow pipe so that it flows evenly into the plurality of hollow fiber membranes, and is provided on the lower side of the membrane module and connects the hollow fiber membranes of the membrane module. A lower delivery tank that collects the circulating water that has passed, a second circulating water tank connected to the lower side of the lower delivery tank and accommodating the circulating water flowing out of the membrane module, and a second circulating water tank installed inside the second circulating water tank. A pump for selectively pumping the circulating water contained in the second circulating water tank is connected to one side of the pump, and the other side is connected to the first circulating water tank, and the circulating water pumped from the pump is connected to the first circulating water tank. 1Includes a return line leading to the circulating water tank.

At this time, it is preferable that the longitudinal direction of the hollow fiber membrane of the membrane module according to the present invention is perpendicular to the air flow direction.

The heating operation method of the membrane humidification module air conditioner according to the present invention includes an intake line that introduces external air, a first circulating water tank that accommodates circulating water of the corresponding capacity inside and discharges the received circulating water through the lower surface, and , an outlet pipe connected at the upper end to the lower part of the first circulating water tank to guide the circulating water flowing out of the first circulating water tank from the upper side to the lower side, and a hollow fiber membrane in the form of a tube with a hollow along the length. A plurality of pieces are arranged at regular intervals from each other to form a bundle, and the lower and upper sides of the outlet pipe are connected, allowing circulating water introduced through the upper side to flow into the hollow of the hollow fiber membranes, and air drawn in through the intake line. A membrane module that evaporates moisture permeated through the surfaces of the hollow fiber membranes into air and humidifies the air passing through the surfaces of the hollow fiber membranes, and one of the membrane modules is provided on the upper side connected to the outflow pipe, and the outflow pipe An upper delivery tank that distributes the circulating water flowing in through the hollow fiber membranes so that it flows evenly into the plurality of hollow fiber membranes, and a lower delivery tank that is provided on the lower side of the membrane module and collects the circulating water that has passed through the hollow fiber membranes of the membrane module. A tank, a second circulating water tank connected to the lower side of the lower delivery tank and receiving circulating water flowing out of the membrane module, and provided inside the second circulating water tank, and optionally, the second circulating water A pump for pumping circulating water contained in a tank, a return line connected to one side of the pump and the other side connected to the first circulating water tank, and guiding the circulating water pumped from the pump to the first circulating water tank. Including a membrane humidification module that evaporates the air introduced from the intake line, humidifies the air, and discharges the humidified air; a compressor that compresses the refrigerant at high temperature and high pressure and discharges it; and An indoor unit that heats the air by heat-exchanging the refrigerant and the air discharged from the membrane humidification module and discharges the refrigerant condensed through the heat exchange, an expansion valve that expands and discharges the refrigerant discharged from the indoor unit, and the refrigerant discharged from the expansion valve A membrane including an outdoor unit that evaporates the refrigerant through heat exchange with outside air and discharges it, an air supply fan that blows air discharged from the indoor unit into the room, and an air supply line that guides the air blown by the air supply fan into the room. A heating operation method of a humidifying module air conditioner, comprising: a) collecting indoor air temperature, indoor relative humidity, indoor set air temperature, and indoor set relative humidity; b) deriving a comparison value by comparing the indoor air temperature collected in step a) with the indoor set air temperature; c) deriving a comparative value by comparing the indoor relative humidity collected in step a) with the indoor relative humidity set; and d) the control unit operating the membrane humidification module, compressor, and air supply fan in any one of the first mode, second mode, and third mode based on the comparison values derived in each of steps b) and c). do.

At this time, in the step of operating in any one of the first mode, second mode, and third mode based on the comparison value in step d) according to the present invention, the first mode is such that the control unit operates the membrane humidification module on and the compressor on. ON operation, air supply fan operates ON.

And in the step of operating in any one of the first mode, second mode, and third mode based on the comparison value in step d) according to the present invention, the second mode is such that the control unit operates the membrane humidification module in OFF operation and the compressor operates in OFF operation. ON operation, air supply fan operates ON.

In addition, in the step d) of operating in any one of the first mode, second mode, and third mode based on the comparison value, the third mode is such that the control unit operates the membrane humidification module in OFF operation and the compressor in OFF operation, The air supply fan operates OFF.

The effects produced by the membrane humidification module air conditioner and the heating operation method of the membrane humidification module air conditioner according to the present invention are as follows.

A membrane humidification module is used as a humidity control device, and a heat pump is used as a temperature control device. It can be operated in heating mode or humidification heating mode depending on the indoor air conditions to maintain a comfortable indoor environment.

In particular, the humidification process through the membrane humidification module occurs due to the difference in water vapor partial pressure between the room temperature water circulating inside the humidifying membrane and the indoor air supplied to the outside of the humidifying membrane, so ultrasonic water is used to control the humidity of the air by spraying water directly. Unlike the spray-type humidification method, water and air come into indirect contact, so problems such as bacterial and mold growth due to condensation around the discharged air can be solved.

In addition, unlike the steam humidification method that requires high temperature water of about 100℃ to form steam, the humidification effect of indoor air can be achieved using only the operating power of indoor air and circulating water, which can greatly contribute to saving building air conditioning energy. .

Figure 1 is an exemplary diagram showing a membrane humidification module air conditioner according to an embodiment of the present invention.
Figure 2 is a graph showing air movement characteristics as a psychrometric diagram.
Figure 3 is a reference diagram showing the humidification principle and characteristics of the membrane humidification module.
Figure 4 is an illustrative diagram showing an example of a membrane humidification module according to an embodiment of the present invention.
Figure 5 is an illustrative diagram showing another example of a membrane humidification module according to an embodiment of the present invention.
Figure 6 is a reference diagram showing an example of applying the membrane humidification module according to an embodiment of the present invention to a heat pump ceiling-type air conditioner indoor unit.
Figure 7 is a reference diagram showing a humidifying performance test method according to a humidifying membrane experimental example.
Figure 8 is a graph showing the results of an experimental example of a humidifying membrane.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. Prior to this, the terms or words used in this specification and claims should not be construed as limited to their usual or dictionary meanings, and the inventor should appropriately define the concept of terms in order to explain his or her invention in the best way. Based on the principle of definability, it must be interpreted with meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and do not represent the entire technical idea of the present invention, so at the time of filing this application, they can be replaced by equivalent equivalents. It should be understood that variations may exist.

The present invention uses a membrane humidification module air conditioner to maintain appropriate indoor temperature and humidity in winter, a membrane humidification module is used as a humidity control device, and a heat pump is used as a temperature control device to control the heating mode according to indoor air conditions. , it can be operated in humidifying heating mode to maintain a comfortable indoor environment.

In particular, the humidification process through the membrane humidification module generates a water vapor partial pressure difference between the room temperature water circulating inside the humidifying membrane and the indoor air supplied to the outside of the humidifying membrane, so an ultrasonic water spray type that controls the humidity of the air by spraying water directly Unlike the humidification method, water and air come into indirect contact, so problems such as bacterial and mold growth due to condensation around the discharged air can be solved.

In the membrane humidification module air conditioner shown in FIGS. 1 to 6, during humidification and heating operation in winter, indoor air is humidified to a set absolute humidity through the membrane humidification module (100, 200), and the humidified air is stored in the membrane humidification module (100, 200). ) It passes through the indoor unit (condenser: 400) located at the rear, is heated to the set air temperature, and is then supplied indoors.

At this time, while the conventional steam humidification method requires the generation of high temperature water of about 100°C to handle the humidification load equal to the enthalpy difference between the indoor air and the humidified air, the membrane humidification module (100, 200) of the present invention In the case of , energy saving effects can be expected in that treatment can be done using only the operating power of intake air and circulating water.

Here, the membrane humidification modules 100 and 200 shown in FIG. 3 supply water at room temperature to the inner space (tube side) of the hollow fiber and to the outside of the hollow fiber to supply moisture into the air using the water vapor permeability properties of the hydrophilic non-porous membrane. When indoor air is supplied to the space (shell side), if a water vapor pressure difference is formed between the hollow fiber membranes, the circulating water penetrating the inner space of the hollow fiber dissolves in the hollow fiber membrane and moves to the outer space of the hollow fiber and is expressed.

This water vapor movement characteristic can greatly improve energy efficiency in that it only requires transportation power to supply indoor air and circulating water, unlike the conventional steam humidification method that requires high temperature water of about 100℃ to form water vapor. You can.

The present invention relates to a membrane humidification module air conditioner and a heating operation method of the membrane humidification module air conditioner, which is as follows with reference to the drawings.

The membrane humidification module air conditioner according to an embodiment of the present invention with reference to FIGS. 1 to 6 includes an intake line (10), a membrane humidification module (100, 200), a compressor (300), an indoor unit (400), and an expansion valve (500). , includes an outdoor unit 600, an air supply fan 700, an air supply line 20, and a control unit 800. First, the intake line 10, like a normal intake line, introduces external air through one side and flows to the other side. Guides the flow of air.

At this time, the intake line 10 is preferably made of a passage, flow path, duct, pipe, etc. through which air can flow from one side to the other.

And the membrane humidification module (100, 200) is connected to the other side of the intake line (10), and evaporates moisture permeated to the surface of the membrane (141, 221) with the air introduced from the intake line (10) to create air. Humidifies and discharges the humidified air.

At this time, looking at the membrane humidification modules 100 and 200 in more detail, they are as follows.

The membrane humidification modules (100, 200) are preferably provided with hollow fiber membranes (141, 221) in the form of tubes with a hollow interior along the length.

Using a hollow fiber membrane, it is possible to effectively automatically control the humidity of the air, minimize electrical energy, which is advantageous in reducing CO₂, and can operate automatically, making it easy to apply to buildings, home appliances, and industrial purposes.

At this time, the problem caused by humidification that generates water droplets, which is a problem with conventional humidification methods, can be solved, and it is energy-saving and can maintain humidity at a comfortable and healthy level.

Since water mist is not generated in the hollow fiber membrane, perfect humidification is possible, sterile humidification is possible (solving the problem of existing humidifier disinfectants), and a very efficient humidifier capable of instantaneous humidification can be provided. There is no need to intentionally create hot water, so no separate energy (electricity) is used to provide hot water.

In addition, humidification using a hollow fiber membrane contains only the moisture absorbed by the hollow fiber membrane in the air, so there is no fear that impurities present in the humidifying water will scatter into the air like water particles, and clean humidified air can be obtained.

In addition, since the gaseous moisture particles passing through the hollow fiber membrane are very small, the range of scattering in the air is very wide, so it is possible to prevent condensation around the humidified air discharge port.

In addition, since water mist is not generated in hollow fiber membrane humidification, perfect humidification is possible, sterile humidification is possible (solving the problem of existing humidifier disinfectants), and a very efficient humidifier capable of instantaneous humidification can be provided. , There is no need to intentionally create hot water for humidification, so no separate energy (electricity) is used to provide hot water.

First, looking at the membrane humidification module 100 according to an embodiment with reference to FIG. 4, the membrane humidification module 100 includes a first circulating water tank 110, a pump 120, and a water supply line 130. ), a membrane module 140, and a drainage line 150. The first circulating water tank 110 accommodates circulating water of the corresponding capacity therein.

A pump 120 is accommodated inside the first circulating water tank 110, and the pump 120 selectively pumps the circulating water contained in the first circulating water tank 110.

At this time, the circulating water pumped by the pump 120 flows to the water supply line 130. The water supply line 130 is connected on one side to the discharge port of the pump 120, so that the water pumped by the pump 120 Circulating water is guided from one side to the other and delivered to the membrane module 140.

Here, the pump 120 is electrically connected to the control unit 800, and its operation is controlled in response to a control signal from the control unit 800.

The water supply line 130 is made of a pipe through which circulating water flows along a hollow, and a valve 131 is provided on the water supply line 130 to selectively distribute circulating water by selectively opening and closing the valve 131. It can be fluid.

At this time, the valve 131 is an electronic opening/closing valve, which is electrically connected to the control unit 800 and opens and closes the water supply line in response to a control signal from the control unit 800.

The membrane module 140 is connected to one side of the other side of the water supply line 130, and flows the circulating water flowing in through the water supply line 130 into the membrane 141, while operating the intake line 10. The moisture that has penetrated the surface of the membrane 141 is evaporated with the air drawn in through the air, thereby humidifying the air passing through the surface of the membrane 141, and the humidified air flows out to the indoor unit 400, which is a component of the heat pump. do.

At this time, the membrane module 140 consists of a plurality of hollow fiber membranes 141 arranged at regular intervals from each other to form a bundle, and a delivery tank 142 is installed on one side and the other side of the hollow fiber membrane 141 forming the bundle. It is provided so that circulating water flows uniformly into the plurality of membranes 141.

And the other side of the membrane module 140 is connected to one side of the drain line 150, and the other side of the drain line 150 is connected to the first circulating water tank 110, so that in the membrane module 140 The flowing circulating water is guided to the first circulating water tank (110).

Here, the hollow longitudinal direction of the membrane module 140 is preferably horizontal.

Therefore, the circulating water contained in the first circulating water tank 110 is pumped by the pump 120, flows into the membrane module 140 through the water supply line 130, and flows out of the membrane module 140. Circulating water forms a circulation route that flows to the first circulating water tank 110 through the drain line 150.

Here, part of the circulating water flowing into the membrane module 140 through the water supply line 130 penetrates the surface of the membrane 141 of the membrane module 140 and enters the air drawn through the intake line 10. The air is humidified as it evaporates, and the humidified air is provided indoors through the indoor unit 400 and the air supply fan 700.

Looking at the membrane humidification module 200 according to another embodiment with reference to FIG. 5, the membrane humidification module 200 includes a first circulating water tank 210, a membrane module 220, and a second circulating water tank ( 230), a pump 240, and a return line 250. First, the first circulating water tank 210 receives circulating water of the corresponding capacity inside and discharges the received circulating water through the lower surface. .

At this time, the lower part of the first circulating water tank 210 is provided with a plurality of outlet pipes 211 for discharging the circulating water contained therein, and each of the outlet pipes 211 is provided with a valve 212, Selective outflow of circulating water can be achieved by opening and closing the valve 212.

The valve 212 is an electronic opening/closing valve, which is electrically connected to the control unit 800 and opens and closes the outflow pipe 211 in response to a control signal from the control unit 800.

A membrane module 220 is connected to the lower side of the first circulating water tank 210, and the membrane module 220 flows circulating water flowing in through the upper side into the hollow of the membrane 221, while flowing the intake line ( Moisture permeating the surface of the membrane 221 is evaporated by the air introduced through 10), thereby humidifying the air passing through the surface of the membrane 221.

At this time, the membrane module 220 consists of a plurality of hollow fiber membranes 221 arranged at regular intervals from each other to form a bundle, and a delivery tank 222 is provided on each of the upper and lower sides of the hollow fiber membrane 221 forming the bundle. It is provided so that circulating water flows uniformly into the plurality of membranes 221.

Here, the hollow longitudinal direction of the membrane module 220 is preferably vertical.

And a second circulating water tank 230 is connected to the lower side of the membrane module 220, and the second circulating water tank 230 receives circulating water flowing out of the membrane module 220.

At this time, a pump 240 is provided inside the second circulating water tank 230, and the pump 240 selectively pumps the circulating water contained in the second circulating water tank 230.

Here, the pump 240 is electrically connected to the control unit 800, and its operation is controlled in response to a control signal from the control unit 800.

The circulating water pumped by the pump 240 flows to the return line 250. The return line 250 is connected on one side to the discharge port of the pump 240, so that the circulation pumped by the pump 240 The water is guided from the bottom to the top and delivered to the first circulating water tank (210).

Therefore, the circulating water contained in the first circulating water tank 210 flows into the membrane module 220 through the outlet pipe provided at the bottom, and the circulating water flowing out of the membrane module 220 flows into the second circulating water tank. After being collected at 230, it is pumped by the pump 240 and forms a circulation route flowing into the first circulating water tank 210 through the return line 250.

Here, part of the circulating water flowing into the membrane module 220 through the first circulating water tank 210 penetrates the surface of the membrane 221 of the membrane module 220 and enters through the intake line 10. As the air is evaporated, the air is humidified, and the humidified air is provided indoors through the indoor unit 400 and the air supply fan 700.

And among the components of the membrane humidification module air conditioner, a heat pump is formed by combining the compressor 300, indoor unit 400, expansion valve 500, outdoor unit 600, and air supply fan 700.

First, the compressor 300 compresses the incoming refrigerant at high temperature and pressure like a typical heat pump compressor and discharges it.

And the indoor unit 400 is connected to the compressor 300 through a line through which refrigerant flows, and exchanges heat with the high-temperature, high-pressure refrigerant discharged from the compressor and the air discharged from the membrane humidification modules 100 and 200 to create air. is heated, and the refrigerant condensed through heat exchange flows out.

At this time, an air supply fan 700 is adjacent to one side of the indoor unit 400, and the air supply fan 700 blows air discharged from the indoor unit 400 into the room.

The air supply line 20 is connected to the air supply fan 700 and guides the air blown by the air supply fan 700 into the room.

Additionally, the expansion valve 500 is connected to the indoor unit 400 through a line through which refrigerant flows, and expands and discharges the refrigerant flowing out of the indoor unit 400.

In addition, the outdoor unit 600 is connected to the expansion valve 500 through a line through which refrigerant flows, and the refrigerant flowing out of the expansion valve 500 is evaporated through heat exchange with external air and flows out.

Therefore, the refrigerant of the heat pump forms a circulation route that circulates through the compressor 300, the indoor unit 400, the expansion valve 500, and the outdoor unit 600 in that order.

The control unit 800 is electrically connected to the membrane humidification modules 100 and 200, the compressor 300, and the air supply fan 700, and operates the membrane humidification module ( 100, 200), compressor 300, and air supply fan 700.

The membrane humidification module air conditioner of the present invention may be configured as a ceiling-type membrane humidification module air conditioner as shown in FIG. 6.

At this time, the membrane humidification modules (100, 200) according to the present invention are placed behind the pre-filter provided in front of the inlet through which air flows, so that the air flowing in through the inlet can be selectively humidified.

In addition, the heating operation method of the membrane humidification module air conditioner according to an embodiment of the present invention is to operate the membrane humidification module air conditioner as described above. This will be described as follows.

The heating operation method of the membrane humidification module air conditioner according to an embodiment of the present invention includes an intake line 10 that introduces external air, and the surface of the membranes 141 and 221 with the air introduced from the intake line 10. Membrane humidification modules (100, 200) that evaporate moisture permeated through the air to humidify the air and discharge the humidified air, a compressor (300) that compresses the refrigerant at high temperature and high pressure and discharges it, and high temperature and high pressure discharged from the compressor. The refrigerant and the air discharged from the membrane humidification modules 100 and 200 are heat exchanged to heat the air, and the indoor unit 400 discharges the refrigerant condensed by the heat exchange, and expands the refrigerant discharged from the indoor unit 400. An expansion valve 500 that evaporates and discharges the refrigerant discharged from the expansion valve 500 through heat exchange with outside air, and an outdoor unit 600 that evaporates the refrigerant discharged from the expansion valve 500, and blows the air discharged from the indoor unit 600 indoors. A heating operation method of a membrane humidification module air conditioner including an air supply fan 700 and an air supply line 20 that guides the air blown by the air supply fan 700 into the room, comprising: a) indoor air temperature, collecting indoor relative humidity, indoor air temperature, and indoor relative humidity; b) deriving a comparison value by comparing the indoor air temperature collected in step a) with the indoor set air temperature; c) deriving a comparative value by comparing the indoor relative humidity collected in step a) with the indoor relative humidity set; and d) a step of the control unit operating the membrane humidification module, compressor, and air supply fan in any one of the first mode, second mode, and third mode based on the comparison values derived in each of steps b) and c) above; Includes.

First, in step a), collect the indoor air temperature, indoor relative humidity, indoor air temperature, and indoor relative humidity.

At this time, the room where the heating is performed is equipped with a temperature sensor and a humidity sensor, and the indoor air temperature and indoor relative humidity are measured and collected through the temperature sensor and humidity sensor, and the indoor air temperature and indoor relative humidity are set by the user through the control unit. It can be collected based on the settings set through .

Next is step b), where the indoor air temperature collected in step a) is compared with the indoor set air temperature to derive a comparison value.

At this time, the indoor air temperature collected in step a) of collecting the indoor air temperature, indoor relative humidity, indoor set air temperature, and indoor set relative humidity is compared with the indoor set air temperature, and the comparison value is derived.

Next is step c), where the indoor relative humidity collected in step a) is compared with the indoor relative humidity set to derive a comparative value.

At this time, the indoor relative humidity collected in step a) of collecting the indoor air temperature, indoor relative humidity, indoor set air temperature, and indoor set relative humidity is compared with the indoor set relative humidity to derive a comparative value.

Next is step d), where the control unit 800 operates the membrane humidification modules 100 and 200, the compressor 300, and the air supply fan 700 based on the comparison values derived from each of steps b) and c). Drive in one of mode 2, mode 2, and mode 3.

Here, in the step of operating in any one of the first mode, second mode, and third mode based on the comparison value in step d), the indoor set air temperature in the first mode is higher than the indoor air temperature, and the indoor relative humidity is higher than the indoor relative humidity. This is a mode selected when the set relative humidity is high. In the first mode, the control unit 800 operates the membrane humidification modules 100 and 200 ON, the compressor 300 operates ON, and the air supply fan 700 operates ON. Thus, heating and humidification are achieved simultaneously by heating and humidifying the supplied air (air) provided indoors.

And in the step d) of operating in any one of the first mode, second mode, and third mode based on the comparison value, in the second mode, the indoor set air temperature is higher than the indoor air temperature, and the indoor relative humidity is higher than the indoor relative humidity. This is a mode selected when the set relative humidity is the same or lower. In the second mode, the control unit 800 operates the membrane humidification modules 100 and 200 in OFF operation, the compressor 300 in ON operation, and the air supply fan 700 in operation. By operating it ON, only heating is done by heating the supply air (air) provided to the room.

In addition, in the step d) of operating in any one of the first mode, second mode, and third mode based on the comparison value, the indoor set air temperature in the third mode is the same or lower than the indoor air temperature, and the indoor relative temperature is lower than the indoor air temperature. This is a mode selected when the indoor relative humidity is equal to or lower than the humidity. In the third mode, the control unit 800 operates the membrane humidification modules 100 and 200 in OFF operation, the compressor 300 in OFF operation, and the air supply fan ( 700) is operated OFF to prevent indoor heating and humidification from occurring.

Figure 8 is a diagram showing the method of testing the performance of a humidifying element according to a humidifying membrane experimental example. Air created under winter indoor design temperature and humidity conditions (22.5°C, 45%) is applied to the outer surface of a hollow fiber humidifying membrane of a shell-and-tube structure. It was supplied through a compressor, and water at room temperature was circulated on the inner surface by installing a pump in a water tank.

At that time, the inlet and outlet temperatures, relative humidity, and wind volume of the supplied air were measured, and the inlet temperature and flow rate of the circulating water were measured.

Figure 9 shows a graph of the results of an experimental example, showing the absolute humidity at the inlet and outlet sides of the supplied air when indoor air and circulating water are supplied to the humidifying membrane test specimen.

As a result of the experiment, air with an absolute humidity of 0.0076 kg/kg (22.5℃, 45%) is humidified to 0.01363 kg/kg (21.3℃, 86%), and the absolute humidity at the outlet of the supply air approximately 2 minutes after starting the compressor and pump. It was confirmed that was maintained stably.

Therefore, in the membrane humidification module air conditioner and the heating operation method of the membrane humidification module air conditioner according to an embodiment of the present invention, the membrane humidification module is installed in front of the heat exchanger (condenser) of the indoor unit to control the humidity of the air sucked into the indoor unit. The humidified air passes through a heat exchanger, is heated, and then supplied into the room.

The membrane humidification module is composed of a non-porous hollow fiber membrane using hydrophilic raw materials and polymeric materials. Room temperature water circulates inside the hollow fiber and intake air penetrates the outside of the hollow fiber.

At this time, the circulating water passing through the hollow fiber membrane is absorbed and permeated through the membrane surface due to the difference in water vapor partial pressure between the surfaces of the hollow fiber membrane, thereby achieving a humidifying effect on the intake air, and the humidified air is pumped through the indoor unit (condenser) to the target supply air temperature. It is heated and then supplied indoors.

Since water is not directly sprayed into the air during the humidification process of a heat pump humidification heater integrated with a membrane humidification module, problems such as condensation on the surface of the indoor unit and bacterial growth on the surface of the heat exchanger due to condensation do not occur, and conventional Unlike steam humidifiers that require high temperature water of about 100℃ to form steam, energy saving effects can be expected in that the humidification effect can be achieved using only the transport power of circulating water and intake air.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely illustrative, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims.

10: intake line 20: air supply line
100, 200: Membrane humidification module 110, 210: First circulating water tank
120, 240: pump 130: water supply line
131, 212: valve 140, 220: membrane module
141, 221: Membrane 142, 222: Delivery tank
150: drainage line 211: outflow pipe
230: Second circulating water tank 250: Return line
300: Compressor 400: Indoor unit
500: Expansion valve 600: Outdoor unit
700: air supply fan 800: control unit

Claims (11)

delete delete delete delete An intake line that introduces outside air;
a membrane humidification module connected to the intake line, humidifying the air by evaporating moisture permeated through the membrane surface with air introduced from the intake line, and discharging the humidified air;
A compressor that compresses the refrigerant at high temperature and pressure and discharges it;
an indoor unit connected to the compressor and a refrigerant flow line, heat-exchanging the high-temperature, high-pressure refrigerant discharged from the compressor and air discharged from the membrane humidification module to heat the air, and discharging the refrigerant condensed through heat exchange;
an expansion valve connected to the indoor unit through a line through which refrigerant flows, and expanding and discharging the refrigerant flowing out of the indoor unit;
an outdoor unit connected to the expansion valve through a line through which refrigerant flows, and evaporating the refrigerant flowing out of the expansion valve through heat exchange with external air and then discharging the refrigerant;
an air supply fan blowing air discharged from the indoor unit into the room; and
It includes an air supply line connected to the air supply fan and guiding the air blown by the air supply fan into the room,
The membrane humidification module is
A first circulating water tank that receives circulating water of the corresponding capacity inside and discharges the received circulating water through the lower surface;
an outlet pipe connected at the upper end to the lower part of the first circulating water tank and guiding the circulating water flowing out of the first circulating water tank from the upper side to the lower side;
A plurality of hollow fiber membranes in the form of a hollow tube along the length are arranged at regular intervals from each other to form a bundle, and the lower and upper sides of the outflow pipe are connected to allow circulating water flowing in through the upper side into the hollow fiber membrane. A membrane module that humidifies the air passing through the surfaces of the hollow fiber membranes by evaporating moisture permeated through the surfaces of the hollow fiber membranes with air drawn through the intake line while flowing into the hollow of the air, and
An upper delivery tank installed on the upper side of the membrane module connected to the outlet pipe to distribute circulating water flowing in through the outlet pipe so that it flows uniformly into a plurality of hollow fiber membranes;
a lower delivery tank provided below the membrane module and collecting circulating water that has passed through the hollow fiber membranes of the membrane module;
A second circulating water tank connected to the lower side of the lower delivery tank and receiving circulating water flowing out of the membrane module,
a pump provided inside the second circulating water tank and selectively pumping circulating water contained in the second circulating water tank;
A membrane humidification module air conditioner including a return line connected to the pump on one side and connected to the first circulating water tank on the other side to guide the circulating water pumped from the pump to the first circulating water tank.
In claim 5,
The hollow fiber membrane of the membrane module is
A membrane humidification module air conditioner in which the longitudinal direction of the hollow is perpendicular to the direction of air flow.
In claim 5,
A control unit electrically connected to the membrane humidification module, compressor, and air supply fan, and controlling the operation of the membrane humidification module, compressor, and air supply fan based on the measured indoor temperature and humidity, set temperature, and set humidity. Air conditioner.
An intake line that introduces external air, a first circulating water tank that accommodates circulating water of the corresponding capacity inside and discharges the received circulating water through the lower surface, and the upper side is connected to the lower part of the first circulating water tank, An outflow pipe that guides the circulating water flowing out of the first circulating water tank from the top to the bottom, and a plurality of hollow fiber membranes in the form of a hollow tube along the length are arranged at regular intervals to form a bundle, The lower and upper sides of the outlet pipe are connected, allowing circulating water flowing in through the upper side to flow into the hollow of the hollow fiber membranes, and evaporating moisture permeated to the surface of the hollow fiber membranes with air drawn through the intake line into air. , a membrane module for humidifying the air passing through the surfaces of the hollow fiber membranes, and an upper part of the membrane module connected to the outflow pipe so that the circulating water flowing in through the outflow pipe is uniformly distributed to the plurality of hollow fiber membranes. an upper delivery tank that distributes the inflow, a lower delivery tank that is provided on the lower side of the membrane module and collects circulating water that has passed through the hollow fiber membranes of the membrane module, and is connected to the lower side of the lower delivery tank, and the membrane A second circulating water tank that accommodates circulating water flowing out of the module, a pump provided inside the second circulating water tank and selectively pumping circulating water contained in the second circulating water tank, and one side of the pump is connected to, and the other side is connected to the first circulating water tank, including a return line that guides the circulating water pumped from the pump to the first circulating water tank, and evaporates it with the air introduced from the intake line, A membrane humidification module that humidifies the air and discharges the humidified air, a compressor that compresses the refrigerant at high temperature and high pressure and discharges it, and heat exchanges the high temperature and high pressure refrigerant discharged from the compressor and the air discharged from the membrane humidification module to create air. An indoor unit that heats and discharges the refrigerant condensed through heat exchange, an expansion valve that expands and discharges the refrigerant leaked from the indoor unit, and an outdoor unit that evaporates and discharges the refrigerant leaked from the expansion valve through heat exchange with outside air. , a heating operation method of a membrane humidification module air conditioner including an air supply fan that blows air discharged from the indoor unit into the room, and an air supply line that guides the air blown by the air supply fan into the room,
a) collecting indoor air temperature, indoor relative humidity, indoor set air temperature, and indoor set relative humidity;
b) deriving a comparison value by comparing the indoor air temperature collected in step a) with the indoor set air temperature;
c) deriving a comparison value by comparing the indoor relative humidity collected in step a) with the indoor relative humidity set; and
d) a step of the control unit operating the membrane humidification module, compressor, and air supply fan in any one of the first mode, second mode, and third mode based on the comparison values derived in each of steps b) and c) above; Heating operation method of membrane humidification module air conditioner.
In claim 8,
In the step d) of operating in any one of the first mode, second mode, and third mode based on the comparison value, the first mode is
A heating operation method of a membrane humidification module air conditioner in which the control unit operates the membrane humidification module ON, the compressor operates ON, and the air supply fan operates ON.
In claim 8,
In the step d) of operating in any one of the first mode, second mode, and third mode based on the comparison value, the second mode is
A heating operation method of a membrane humidification module air conditioner in which the control unit operates the membrane humidification module OFF, the compressor operates ON, and the air supply fan operates ON.
In claim 8,
In the step d) of operating in any one of the first mode, second mode, and third mode based on the comparison value, the third mode is
A heating operation method of a membrane humidification module air conditioner in which the control unit operates the membrane humidification module in OFF operation, the compressor in OFF operation, and the air supply fan in OFF operation.

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