KR20220029060A - Device and method for removing odor in a fan coil unit exchanger using potoplasma - Google Patents

Abstract

The present invention relates to a device and method for removing odor of a fan coil unit using optical plasma. The device comprises: a body case; a blowing fan located inside the body case, sucking in air through the front, and discharging the same through the side; a fan driving motor installed inside the body case to rotate the blowing fan; a heat exchanger mounted inside the body case to surround a side surface of the blowing fan; an electronic control valve provided in a supply pipe connected to the heat exchanger to control fluid flowing into the heat exchanger; an optical plasma generating unit mounted between the blowing fan and the heat exchanger in a fan coil unit covering the main body case and including a front cover provided with a suction port and a discharge port; and a control unit for controlling the fan driving motor and the optical plasma generating unit.

Description

DEVICE AND METHOD FOR REMOVING ODOR IN A FAN COIL UNIT EXCHANGER USING POTOPLASMA

The present invention relates to an apparatus and method for deodorizing a fan coil unit using optical plasma.

A fan coil unit is installed in a building to cool and heat the interior of the building. In general, a fan coil unit includes a main body case having an internal flow path, a blowing fan positioned in the internal flow path of the main body case to generate air flow, a fan driving motor rotating the blowing fan, and located inside the body case and a heat exchanger for supplying cold or warm air, and a front grill having an inlet and an outlet to cover the front surface of the main body case.

In such a fan coil unit, when the blower fan rotates by the operation of the fan drive motor, the air flow is generated by the rotation of the blower fan, and the indoor air is sucked through the intake port of the front grill and is sucked through the intake port of the front grill. Indoor air is introduced into the blower through the suction passage, and the air flowing into the blower is discharged into the room through the discharge passage and the outlets of the heat exchanger and front grill. As the indoor air passes through the heat exchanger, it is exchanged with cold or warm air and discharged into the room. As this process continues, the operation stops when the indoor air reaches the set temperature, and then operates when the set temperature is higher or lower to maintain the indoor air in the set temperature range.

Korean Patent Registration No. 10-1312950 (published on October 1, 2013) (hereinafter referred to as Prior Art 1) discloses a fan coil unit having a motor unit for improving energy efficiency. In addition, Republic of Korea Patent No. 10-1297601 (published on Aug. 19, 2013) (hereinafter referred to as Prior Art 2) discloses a fan coil unit having a motor unit and a valve unit for improving energy efficiency.

However, in the prior art, dew is formed (condensation) on the surface of the heat exchanger as the indoor air passes through the heat exchanger while the operation of cooling the room is continued, and pollutants generated indoors (for example, pollutants generated during cooking, etc.) ) adheres to the surface of the heat exchanger, and contaminants adhering to the surface of the heat exchanger are adsorbed to the surface of the heat exchanger while drying while the operation is stopped, causing an unpleasant odor. When the operation is restarted, an unpleasant odor generated from the surface of the heat exchanger spreads to the room, causing discomfort to the indoor occupants.

An object of the present invention is to provide a deodorizing device and method for a fan coil unit using optical plasma, which prevents unpleasant odors generated by the adsorption of indoor pollutants on the surface of a heat exchanger from entering the room.

In order to achieve the object of the present invention, the body case; a blower fan located inside the body case, sucking air in the front and discharging it to the side; a fan driving motor mounted inside the main body case to rotate the blowing fan; a heat exchanger mounted inside the main body case to surround a side surface of the blowing fan; an electronic control valve provided in a supply pipe connected to the heat exchanger to control the fluid flowing into the heat exchanger; In the fan coil unit covering the main body case and comprising a front cover provided with an inlet and an outlet,

an optical plasma generating unit mounted between the blowing fan and the heat exchanger to generate optical plasma; and a control unit for controlling the fan driving motor, the electronic control valve, and the optical plasma generating unit.

In addition, the body case; a blower fan located inside the body case, sucking air in the front and discharging it to the side; a fan driving motor mounted inside the main body case to rotate the blowing fan; a heat exchanger mounted inside the main body case to surround a side surface of the blowing fan; an electronic control valve provided in a supply pipe connected to the heat exchanger to control the fluid flowing into the heat exchanger; In a fan coil unit covering the main body case and including a front cover having an inlet and an outlet,

forming cold air in the heat exchanger by opening the electronic control valve to flow cold water to the heat exchanger; When dew condensation is formed on the surface of the heat exchanger by the cold air formed in the heat exchanger and a water film is formed on the surface of the heat exchanger, operating the fan driving motor to rotate the blowing fan. A method for removing odors is provided.

It is preferable to rotate the blower fan after 30 seconds to 3 minutes have elapsed after opening the electronic control valve.

An optical plasma generating unit is provided between the blowing fan and the heat exchanger, and the method may further include generating optical plasma by operating the optical plasma generating unit before rotating the blowing fan.

In addition, the body case; a blower fan located inside the body case, sucking air in the front and discharging it to the side; a fan driving motor mounted inside the main body case to rotate the blowing fan; a heat exchanger mounted inside the main body case to surround a side surface of the blowing fan; an electronic control valve provided in a supply pipe connected to the heat exchanger to control the fluid flowing into the heat exchanger; an optical plasma generating unit mounted between the blower fan and the heat exchanger; a front cover covering the body case and having an inlet and an outlet; In a fan coil unit including a control unit connected to the fan driving motor, the optical plasma generating unit and the electronic control valve to control the fan driving motor, the optical plasma generating unit and the electronic control valve,

irradiating optical plasma to the heat exchanger in a dry state by operating the optical plasma generating unit in a state in which the electronic control valve is closed and the blowing fan is stopped; forming cold air in the heat exchanger by operating the optical plasma generating unit to supply cold water to the heat exchanger by opening the electronic control valve after a set time has elapsed; There is provided a deodorizing method of a fan coil unit using optical plasma, comprising the step of rotating the blowing fan by operating the fan driving motor after a set time elapses after the cold water flows through the heat exchanger.

It is preferable to operate the fan driving motor 30 seconds to 3 minutes after opening the electronic control valve.

Preferably, the optical plasma generating unit is stopped after a set time elapses after operation.

A first embodiment of the present invention comprises the steps of opening an electronic control valve in a state in which the blowing fan of a fan coil unit is stopped, allowing cold water to flow through the heat exchanger to form cold air in the heat exchanger, and the surface of the heat exchanger by the cold air formed in the heat exchanger. When dew condensation is formed on the surface of the heat exchanger and a water film is formed on the surface of the heat exchanger, it includes the step of operating the fan drive motor to rotate the blowing fan. In the process of heat exchange through the heat exchanger and being discharged into the room, unpleasant odors are prevented from entering the room. Due to this, it is possible to maintain the interior in a comfortable state.

In addition, in the second embodiment of the present invention, in a state in which the electronic control valve of the fan coil unit is closed and the blowing fan is stopped, the optical plasma generating unit is operated for a set time or continuously operated to generate optical plasma in the heat exchanger in a dry state. After irradiating the light plasma generating unit and stopping it after a certain period of time or after a certain period of time has elapsed, the electronic control valve is opened to supply cold water to the heat exchanger to form cold air in the heat exchanger, and the cold water flows to the heat exchanger and Since it includes the step of rotating the blower fan by operating the fan drive motor after a set time has elapsed, the indoor pollutants adsorbed and dried on the surface of the heat exchanger are first removed, and then the surface of the heat exchanger is coated with a water film to air indoor air. It prevents unpleasant odors from entering the room while heat-exchanged through the heat exchanger and discharged into the room. Due to this, it is possible to maintain the interior in a comfortable state.

1 is a plan sectional view showing an example of a fan coil unit equipped with an embodiment of a deodorizing device for a fan coil unit using optical plasma according to the present invention;
2 is a flowchart showing a first embodiment of a method for removing odor of a fan coil unit using optical plasma according to the present invention;
3 is a flowchart showing a second embodiment of a method for removing odors of a fan coil unit using optical plasma according to the present invention.

Hereinafter, an embodiment of an apparatus and method for deodorizing a fan coil unit using optical plasma according to the present invention will be described with reference to the accompanying drawings.

1 is a plan sectional view showing an example of a fan coil unit equipped with an embodiment of the deodorizing device of the fan coil unit using optical plasma according to the present invention.

As shown in FIG. 1 , first, an example of the fan coil unit is a body case 10 , a blower fan 20 , a fan driving motor 30 , a heat exchanger 40 , an electromagnetic control valve 50 , and a front surface. and a cover 60 .

The main body case 10 includes a base plate 11 formed in a substantially square plate shape, and side plates 12 that are respectively extended and bent from the edges of the base plate 11 and connected to each other. That is, the main body case 10 is formed in the shape of a quadrangular tubular having an open substantially one side.

The blowing fan 20 is located inside the main body case 10, sucks air in the front and discharges it to the side. As an example of the blowing fan 120 , the blowing fan 120 has an annular ring shape connecting the abacus 21 , the blades 22 arranged at the edge of the abacus 21 , and the upper ends of the blades 22 . It includes an air guide 23 formed of a curved plate. When the blowing fan 120 rotates, air is introduced into the air guide 23 and discharged through the blades 22 .

The fan driving motor 30 is mounted inside the main body case 10 to rotate the blowing fan 20 . The fan driving motor 30 is mounted in the middle of the base plate 11 of the main body case 10 , and the motor shaft of the fan driving motor 30 is coupled to the main plate 21 of the blowing fan 20 .

The heat exchanger 40 is mounted inside the main body case 10 so as to surround the side surface of the blower fan 20 to form cold or warm air while flowing cold or hot water therein. As an example of the heat exchanger 40 , the heat exchanger 40 includes a heat transfer tube 41 formed in a zigzag shape, a plurality of heat sinks 42 coupled in a line to the heat transfer tube 41 , and one side of the heat transfer tube 41 . A supply pipe 43 connected to the end and flowing hot or cold water into the heat pipe 41, and an outlet pipe 44 connected to the other end of the heat pipe 41 through which hot or cold water flows through the heat pipe 41 include The heat sinks 42 are thin plates formed in a rectangular shape. The supply pipe 43 of the heat exchanger 40 is connected to a water supply line (not shown), and the outlet pipe 44 of the heat exchanger 40 is connected to a water recovery line (not shown), and the water supply line and water recovery The lines are connected to cold and hot water generating units (not shown) that generate cold water and hot water, respectively. A discharge passage is formed between the outside of the heat exchanger 40 and the side plates 112 of the body case 10 .

The electronic control valve 50 is provided in the supply pipe 43 connected to the heat exchanger 40 to control the fluid flowing into the heat exchanger 40 . That is, when the electronic control valve 50 is closed, the supply of cold water or hot water to the heat exchanger 40 through the supply pipe 43 is blocked, and when the electronic control valve 50 is opened, the heat exchanger through the supply pipe 43 . Cold water or hot water is supplied to (40).

The front cover 60 is provided with an inlet 61 and an outlet 62 and covers the body case 10 . The suction port 61 of the front cover 60 communicates with the suction side of the blowing fan 20 , and the discharge port 62 communicates with the discharge flow path of the main body case 10 .

It is preferable that the filter assembly 70 is provided between the suction port 61 of the front cover 60 and the suction side of the blowing fan 20 .

An embodiment of the fan coil unit deodorizing device according to the present invention includes an optical plasma generating unit 80 mounted between a blowing fan 20 and a heat exchanger 40, a fan driving motor 30 and optical plasma generation and a control unit 90 for controlling the unit 80 .

The optical plasma generating unit 80 is preferably mounted on the base plate of the main body case 10 so as to be positioned between the blowing fan 20 and the heat exchanger 40 . The optical plasma generating unit 80 is a plasma lamp 81 positioned inside the main body case 10 adjacent to the heat exchanger 40, and a stabilizer (not shown) for stably supplying DC voltage to the plasma lamp 981 . ), and the SMPS (adapter, not shown) that converts the general AC voltage of AC 220V into DC voltage of DC 12V and supplies it to the ballast. The optical plasma generating unit 80 generates optical plasma from the plasma lamp 81 when a direct current voltage is supplied to the plasma lamp 81 from the adapter and the ballast, and the wavelength of vacuum ultraviolet rays (100 nm) to general sterilization ultraviolet rays (UV-A) ) to generate multiple wavelengths in the range of wavelengths (400 nm). A plurality of light plasma generating units 80 may be provided.

The control unit 90 is connected to the fan driving motor 30 , the optical plasma generating unit 80 , and the electronic control valve 50 , and the fan driving motor 30 , the optical plasma generating unit 80 , the electronic control valve 50 . ) to control

2 is a flowchart illustrating a first embodiment of a method for removing odors of a fan coil unit using optical plasma according to the present invention.

As shown in FIG. 2, in the first embodiment of the method for removing odor of a fan coil unit using optical plasma according to the present invention, first, the electronic control valve 50 is operated in a state where the blowing fan of the fan coil unit is stopped. The step (S1) of forming cold air in the heat exchanger 40 by opening it to flow cold water into the heat exchanger 40 is performed. The fan coil unit includes a main body case (10), a blower fan (20), a fan drive motor (30), a heat exchanger (40), an electronic control valve (50), an optical plasma generating unit (80), a front cover (60), It includes a control unit (90). The main body case 10 of the fan coil unit, the blowing fan 20, the fan driving motor 30, the heat exchanger 40, the electronic control valve 50, the optical plasma generating unit 80, the front cover 60, The control unit 90 has the same configuration as the fan coil unit described above, respectively, and the optical plasma generating unit 80 can be selectively applied.

That is, as the electronic control valve 50 is opened in a state in which the blowing fan is stopped, cold water flows through the supply pipe 43 - the heat transfer tube 41 - the outlet tube 44 of the heat exchanger 40 to the heat transfer tube 41 and Cold air is transmitted through the heat sinks 42 , and condensation is formed on the surfaces of the heat sinks 42 and the heat transfer tubes 41 by the cold air transmitted to the heat sinks 42 and the heat transfer tubes 41 , and a water film is formed on the surfaces. do.

When dew condensation is formed on the surface of the heat exchanger 40 by the cold air formed in the heat exchanger 40 and a water film is formed on the surface of the heat exchanger 40, the fan driving motor 30 is operated to operate the blowing fan 20 The rotating step (S2) proceeds. It is preferable that the blowing fan 20 is rotated after 30 seconds to 3 minutes have elapsed after opening the electronic control valve 50 . As the blower fan 20 rotates, a flow of air is generated so that indoor air is sucked in through the inlet 61 of the front cover 60 , and the indoor air sucked in through the inlet 61 of the front cover 60 is blown. The air flowing into the fan 20 and flowing into the blowing fan 20 is discharged into the room through the discharge passage and the discharge ports 62 of the heat exchanger 40 and the front cover 60, at this time, the air 40), it is cooled and discharged into the room in a cool state. Before rotating the blower fan 20, cold water flows through the heat exchanger 40 so that a water film is formed on the surface of the heat exchanger 40, thereby removing the dried indoor pollutants adsorbed on the surface of the heat exchanger 40. Since the coating prevents an unpleasant odor from being generated in the heat exchanger 40 , when the air passes through the heat exchanger 40 and is discharged into the room, the unpleasant smell is prevented from flowing into the room.

On the other hand, before rotating the blowing fan 20, the step of operating the optical plasma generating unit 80 to generate optical plasma may be further included. That is, the blower fan 20 is operated after removing contaminants adsorbed on the surface of the heat exchanger 40 by generating light plasma in a state in which a water film is formed on the surface of the heat exchanger 40 . The optical plasma generating unit 80 can be continuously operated, and the optical plasma generating unit 80 can be operated only for a set operating time. The set operating time is preferably 1 to 2 minutes. When generating optical plasma with the optical plasma generating unit 80, the electronic control valve 50 is opened and the optical plasma is generated after about 1 minute has elapsed. When the electronic control valve 50 is opened, optical plasma may be generated for a set time, and also, optical plasma may be continuously generated at the same time as the electronic control valve 50 is opened.

The first embodiment of the deodorizing method of the fan coil unit according to the present invention is performed when the fan coil unit is restarted after being stopped for a predetermined time. Such control is performed by the control unit 90 .

3 is a flowchart illustrating a second embodiment of a method for removing odors of a fan coil unit using optical plasma according to the present invention.

As shown in FIG. 3 , in the second embodiment of the method for removing odor of a fan coil unit using optical plasma according to the present invention, first, the electronic control valve 50 of the fan coil unit is closed and the blowing fan 20 is A step (S11) of irradiating light plasma for a set time to the heat exchanger 40 in a dry state by operating the optical plasma generating unit 80 for a set time in a stopped state is performed. The fan coil unit includes a main body case (10), a blower fan (20), a fan drive motor (30), a heat exchanger (40), an electronic control valve (50), an optical plasma generating unit (80), a front cover (60), It includes a control unit (90). The main body case 10 of the fan coil unit, the blowing fan 20, the fan driving motor 30, the heat exchanger 40, the electronic control valve 50, the optical plasma generating unit 80, the front cover 60, The control unit 90 has the same configuration as the fan coil unit described above, respectively.

The set operating time of the light plasma generating unit 80 is preferably 1 to 2 minutes. The electronic control valve 50 is closed so that cold water does not flow to the heat exchanger 40 when the optical plasma generating unit 80 is operated for a set time to generate optical plasma. Optical plasma generated from the optical plasma generating unit 80 is irradiated to the heat exchanger 40 and adsorbed on the surface of the heat exchanger 40 to remove dried indoor pollutants to remove unpleasant odors generated by pollutants do.

After the optical plasma generating unit 80 is operated for a set time, the operation of the optical plasma generating unit 80 is stopped, the electronic control valve 50 is opened to supply cold water to the heat exchanger 40, and the heat exchanger 40 A step (S12) of forming cold air is performed. That is, as the electronic control valve 50 is opened, cold water flows through the supply pipe 43 - the heat transfer tube 41 - the outlet tube 44 of the heat exchanger 40, and cold air through the heat transfer tube 41 and the heat sink 42 is transmitted, and dew is formed on the surfaces of the heat sinks 42 and the heat transfer tube 41 by the cold air transmitted to the heat sinks 42 and the heat transfer tube 41, and a water film is formed on the surface. As a water film is formed on the surface of the heat exchanger 40, when contaminants removed by photoplasma remain, the surface of the heat exchanger 40 is coated by the water film to prevent an unpleasant odor from being generated secondarily.

On the other hand, when the electronic control valve 50 is closed and the blowing fan 20 is stopped, the optical plasma generating unit 80 is operated to generate optical plasma, and after a set time elapses, the optical plasma generating unit 80 is stopped In a state not to do so, cold air may be formed in the heat exchanger 40 by opening the electronic control valve 50 to supply cold water to the heat exchanger 40 .

After a set time elapses after the cold water flows into the heat exchanger 40, the fan driving motor 30 is operated to rotate the blowing fan 20 (S13). It is preferable to operate the fan driving motor 30 after 30 seconds to 3 minutes have elapsed after opening the electronic control valve 50 . As the blower fan 20 rotates, a flow of air is generated so that indoor air is sucked in through the inlet 61 of the front cover 60 , and the indoor air sucked in through the inlet 61 of the front cover 60 is blown. Air flowing into the fan 20 and flowing into the blowing fan 20 is discharged into the room through the discharge passage and the discharge ports 62 of the heat exchanger 40 and the front cover 60, at this time, the air is discharged into the heat exchanger ( 40), it is cooled and discharged into the room in a cool state. Since contaminants are removed from the surface of the heat exchanger 40 and air passes through the heat exchanger 40 in a state in which an unpleasant odor is not generated, the introduction of an unpleasant odor into the room is prevented.

The second embodiment of the deodorizing method of the fan coil unit using the optical plasma according to the present invention is performed when the fan coil unit is restarted after being stopped for a predetermined time. Such control is performed by the control unit 90 .

Hereinafter, the operation and effect of the deodorizing device and method of the fan coil unit using the optical plasma according to the present invention will be described.

The first embodiment of the present invention is a step (S1) of forming cold air in the heat exchanger 40 by opening the electronic control valve 50 while the blowing fan of the fan coil unit is stopped and allowing cold water to flow into the heat exchanger 40 (S1). ) and the cold air formed in the heat exchanger 40, when dew condensation is formed on the surface of the heat exchanger 40 and a water film is formed on the surface of the heat exchanger 40, the fan driving motor 30 is operated to operate the blowing fan ( 20) is included in the rotating step (S2), so that the indoor pollutants adsorbed and dried on the surface of the heat exchanger 40 are coated with a water film. In the process, unpleasant odors are prevented from entering the room. Due to this, it is possible to maintain the interior in a comfortable state.

In addition, in the second embodiment of the present invention, in a state in which the electronic control valve 50 of the fan coil unit is closed and the blowing fan 20 is stopped, the optical plasma generating unit 80 is operated for a set time or continuously operated A step (S11) of irradiating the optical plasma set in the heat exchanger 40 in the dry state by operating the optical plasma generating unit 80 and stopping the electronic control valve 50 after a predetermined time elapses or after a predetermined period of time has elapsed ) to supply cold water to the heat exchanger 40 to form cold air in the heat exchanger 40 (S12), and cold water flows to the heat exchanger 40, and after a set time elapses, the fan driving motor 30 is operated Since it includes the step (S13) of rotating the blower fan 20 by first removing the indoor pollutants adsorbed and dried on the surface of the heat exchanger 40, and then coating the surface of the heat exchanger 40 with a water film. This prevents unpleasant odors from entering the room while the indoor air undergoes heat exchange through the heat exchanger 40 and is discharged into the room. Due to this, it is possible to maintain the interior in a comfortable state.

10; body case 20; blower fan
30; fan drive motor 40; heat exchanger
50; electronic control valve 60; front cover

Claims (7)

body case;
a blower fan located inside the body case, sucking air in the front and discharging it to the side;
a fan driving motor mounted inside the main body case to rotate the blowing fan;
a heat exchanger mounted inside the main body case to surround a side surface of the blowing fan;
an electronic control valve provided in a supply pipe connected to the heat exchanger to control the fluid flowing into the heat exchanger;
In the fan coil unit covering the main body case and comprising a front cover provided with an inlet and an outlet,
an optical plasma generating unit mounted between the blowing fan and the heat exchanger to generate optical plasma; and
and a control unit connected to the fan driving motor, the optical plasma generating unit and the electronic control valve to control the fan driving motor, the optical plasma generating unit and the electronic control valve. body case;
a blower fan located inside the body case, sucking air in the front and discharging it to the side;
a fan driving motor mounted inside the main body case to rotate the blowing fan;
a heat exchanger mounted inside the main body case to surround a side surface of the blowing fan;
an electronic control valve provided in a supply pipe connected to the heat exchanger to control the fluid flowing into the heat exchanger;
In a fan coil unit covering the main body case and including a front cover having an inlet and an outlet,
forming cold air in the heat exchanger by allowing cold water to flow through the heat exchanger by opening the electronic control valve while the blowing fan is stopped;
When dew condensation is formed on the surface of the heat exchanger by the cold air formed in the heat exchanger and a water film is formed on the surface of the heat exchanger, operating the fan driving motor to rotate the blowing fan. odor removal method. The method of claim 2, wherein the blower fan is rotated after 30 seconds to 3 minutes have elapsed after opening the electronic control valve. The optical plasma of claim 2, wherein an optical plasma generating unit is provided between the blowing fan and the heat exchanger, and further comprising the step of generating optical plasma by operating the optical plasma generating unit before rotating the blowing fan How to remove odor from fan coil unit using body case;
a blower fan located inside the body case, sucking air in the front and discharging it to the side;
a fan driving motor mounted inside the main body case to rotate the blowing fan;
a heat exchanger mounted inside the main body case to surround a side surface of the blowing fan;
an electronic control valve provided in a supply pipe connected to the heat exchanger to control the fluid flowing into the heat exchanger;
an optical plasma generating unit mounted between the blowing fan and the heat exchanger to generate optical plasma;
a front cover covering the body case and having an inlet and an outlet;
In a fan coil unit including a control unit connected to the fan driving motor, the optical plasma generating unit and the electronic control valve to control the fan driving motor, the optical plasma generating unit and the electronic control valve,
irradiating optical plasma to the heat exchanger in a dry state by operating the optical plasma generating unit in a state in which the electronic control valve is closed and the blowing fan is stopped;
forming cold air in the heat exchanger by operating the optical plasma generating unit to supply cold water to the heat exchanger by opening the electronic control valve after a set time has elapsed;
and operating the fan driving motor to rotate the blowing fan after a set time elapses after the cold water flows through the heat exchanger. The method of claim 5, wherein the fan driving motor is operated 30 seconds to 3 minutes after opening the electronic control valve. [6] The method of claim 2 or 5, wherein the optical plasma generating unit is stopped after a set time has elapsed after operation.

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