KR101405819B1 - Fan coil unit with oval coil - Google Patents

Abstract

The present invention relates to a fan coil unit which provides hot or warm air by exchanging heat with the heated/cooled fluid provided from a boiler or a cooler. The present invention uses an oval coil which has a longer axis extending in the direction the air is flowing and the oval-shaped section to configure a heat exchange member to widen the heat exchange area to minimize the condensation of the condensed water. More particularly, the air flow attributes of the oval coil can minimize the occurrence of the vortex phenomenon on the rear surface of the coil to prevent the condensed water from being scattered. Accordingly, a highly efficient high-capacity apparatus can be implemented by employing a blowing fan with wind capacity higher compared to that of a conventional blowing fan.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a fan coil unit having an oval coil,

The present invention relates to a fan coil unit, which prevents air from being scattered due to cooling of air while cooling / heating the room through cooling or heating of air by heat exchange with a fluid, widening the heat transfer area of the heat exchange member, The present invention relates to a fan coil unit having an oblique coil suitable for an air conditioning apparatus such as a large temperature difference system or a direct expansion type by improving efficiency.

Generally, the fan coil unit is one of the central cooling / heating facilities. The fan coil unit receives cold water or hot water from a chiller or a boiler, passes the heat exchanger, And air is discharged to the room by a blower to perform cooling or heating.

1, a general fan coil unit includes a frame 10, a case 20 fixed to the frame 10 by a screw to form an external enclosure and provided with a discharge grill 21 on one side thereof, A heat exchanger 30 installed on the lower side of the heat exchanger 30 to blow the air in the room toward the heat exchanger 30 and to be connected to the heat exchanger 30 A blower 40 for blowing out the air exchanged by the blower 40 to the outside through the discharge grille 21 of the case 20 and a blower 40 provided below the heat exchanger 30 to fix the blower 40 and a heat exchanger 30 And a drain means 60 formed integrally with the fixing plate 50 and positioned at the lower end of the heat exchanger 30. [

However, in the above-mentioned prior art, especially when cooling, condensed water forms on the surface of the coil constituting the heat exchanger 30, and dew-shaped moisture is scattered to the room by the blowing pressure of the blower 40 There is a problem.

Due to such a problem, the general fan coil unit is limited to limit the wind speed of the blower 40 to a certain wind speed or less.

For example, in the case of the fan coil unit proposed in Korean Patent Laid-Open No. 10-2006-0012121, only the configuration for preventing the condensed water generated in the heat exchanger from splashing inside the case is described, Configuration is lacking.

In addition, the prior art has a problem that only the central cooling / heating by the heat exchanger is possible but the additional cooling / heating is impossible.

Korean Patent Publication No. 10-2006-0012121

SUMMARY OF THE INVENTION The present invention has been made in order to overcome the problems of the prior art as described above, and it is an object of the present invention to provide a heat exchanger having a structure in which a heat exchange area for expanding a heat exchange area is expanded to minimize air generation and scattering, It is an object to provide a coil unit.

Another object of the present invention is to provide a fan coil unit having an oval coil capable of performing additional cooling / heating by further heating or cooling the air exchanged by the heat exchange member.

Another object of the present invention is to provide a fan coil unit having an oval coil which can be flown in a proportional control manner in accordance with the temperature of indoor air or outdoor air.

In order to achieve the above object, the present invention provides a fan coil unit including a fan coil unit for providing hot air or cold air while exchanging heat through heat or cool air supplied from a boiler or a cooler, A casing having an inlet through which outdoor air is introduced and an outlet through which the introduced air is discharged into the room, and a communication space through which the air is heat-exchanged while communicating the inlet and the outlet; A blowing fan built in a communication space of the casing to suck indoor air or outdoor air while delivering vacuum pressure to the inlet, and to move the outdoor air to the outlet; A heat exchange member installed in the communication space to heat or cool air through heat exchange between the fluid and air while flowing the fluid; A heating member installed adjacent to the heat exchange member and the discharge port for further heating or cooling the air heat exchanged by the heat exchange member; And a controller for controlling operations of the blowing fan, the heat exchanging member, and the warming member, wherein the heat exchanging member is configured to circulate the fluid of the boiler or the cooler, An elliptical cross-section of an oval coil; And a plurality of heat dissipating fins which are stacked in a state of being penetrated by the oblique coil and separated from each other to dissipate the cold air or the heat of the oval coil.

For example, the heating member may include a thermoelectric element that generates heat or absorbs heat by power supply by the controller; And a thermally dissipating fins that dissipate heat or cool air of the thermoelectric element.

The casing may further include: a first inlet for introducing indoor air while constituting the inlet; And a second inlet for introducing outdoor air in a state of being separated from the first inlet, wherein the first inlet and the second inlet are respectively installed in the first inlet and the second inlet, And a damper for opening and closing the second inlet.

It is preferable that the controller controls the opening and closing rate of the first inlet and the second inlet proportionally while controlling the damper according to the temperature of the room air or the outdoor air.

The heat exchanging member may further include a spacer for laminating the heat radiating fins in a spaced apart relationship, wherein the spacer is protruded from a penetrating portion of the erroneous coil while forming an identical body to the heat radiating fin, And a projecting tube projecting in a tubular shape and engaged with another radiating fin.

In addition, the heat exchange member may further include a moisture scattering prevention guide which is installed on the radiating fin in a state of being adjacent to the protruding pipe through which the oval coil penetrates and blocks moisture moving together with the air.

For example, the moisture dissipation prevention guide may be composed of a pair of shield plates symmetrical about a long axis of the observer coil and interfering with the movement of moisture while forming an inclined surface that becomes narrower toward the discharge port side.

In addition, the pair of shield plates may include an inflow portion into which air having contact with the outer circumferential surface of the oval coil flows together with moisture, while being in the form of a cap having a narrowed interval at one end adjacent to the obliqueness coil; And a discharge unit extending in a symmetrical state with respect to the inflow unit and discharging the air of the inflow unit in a shape in which the interval between the ends is widened.

The present invention may further comprise a photocatalytic lamp provided in the communication space of the casing to sterilize the air discharged to the discharge port.

In the fan coil unit having the oblique coil according to the present invention,

Since the heat exchange member is composed of the elliptical cross-sectional oval coil having the long axis in the moving direction of the air, the heat exchange area is enlarged to minimize the condensation of condensed water. Especially, the vortex phenomenon on the rear surface of the coil is minimized due to the air flow characteristic of the oval coil Accordingly, it is possible to prevent the condensed water from being scattered. Accordingly, a blowing fan having a higher wind speed than that of the conventional blowing fan can be employed, thereby realizing a high efficiency and large capacity device.

Further, since the air that has been heat-exchanged by the heat exchanging member is further cooled or heated by the heating member, it is possible to additionally cool and heat the air that has been cooled / heated in a lump through the heat exchanging member, So that the structure is simplified and the manufacturing is convenient.

In addition, since the damper installed in the first inlet and the second inlet is opened and closed in a proportional control manner by the controller according to the temperature of indoor and outdoor air, the energy due to cooling or heating can be reduced by using the temperature of outdoor air.

In addition, since the protruding tube constituting the spacer is formed in the radiating fin and is caught by another radiating fin, the radiating fins can be firmly fixed while being separated from each other.

In addition, since the moisture scattering prevention guide is installed on the radiating fin adjacent to the oval coil and interferes with the moisture moving together with the air, the scattering of moisture can be prevented even when the excess wind speed of the blowing fan is generated.

In addition, since the pair of shield plates constituting the moisture scattering prevention guide are formed in the shape of a slope forming the inclined plane, moisture is interfered through the inflow portion where the interval is narrow, and air is discharged through the discharge portion where the interval is widened. Air can be discharged.

1 is a perspective view showing a general fan coil unit;
Fig. 2 is a configuration diagram showing the entire configuration of a fan coil unit having a drop coil according to the present invention; Fig.
3 is a perspective view showing a heat exchanging member of the present invention.
4 is an enlarged cross-sectional view showing the heat exchange member shown in Fig.
5 is a perspective view showing a heating member of the present invention.
6 is an enlarged cross-sectional view showing another embodiment of the heat exchanging member shown in Fig.
7 is a block diagram showing a controller of the present invention;
8 is a perspective view showing the photocatalytic lamp of the present invention.
9 is a sectional view showing the photocatalytic lamp of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted.

2, the fan coil unit 400 includes a casing 410, a blowing fan 420, a heat exchange member 430, A warming member 440, and a controller 450. [0042]

2, the casing 410 is formed as an enclosure as shown in FIG. 2, and has an inlet 411 through which air flows and a communication space 411 through which the introduced air moves And a discharge port 412 for discharging the air moved into the communication space 413 to the room.

Here, although the casing 410 is shown as a top plate as shown, it may be formed in various forms, such as a ceiling, a ceiling, or a stand.

The inlet 411 is formed at one side of the casing 410 and has a first inlet 411a through which the room air flows and a second inlet 411b formed at the other side of the casing 410 through which the outdoor air flows, ).

The first inlet 411a and the second inlet 411b are provided with a filter member (not shown) so that foreign substances contained in the inflow air can be filtered and connected to the air flow unit May be introduced.

That is, the indoor air or the outdoor air flows into the inlet 411 as shown in FIG. 2, is adjusted to a set temperature while passing through the communication space 413, and is discharged to the room through the outlet 412.

The first inlet 411a and the second inlet 411b are provided with a damper 415 which is opened and closed under the control of the controller 450 so that room air or outdoor air can be introduced by the controller 450.

The damper 415 is rotatably mounted on the first inlet 411a and the second inlet 411b by a plurality of blades which are individually opened and closed by rotation and a plurality of blades Or may be a conventional structure known to those skilled in the art to which the present invention belongs.

The damper 415 is operated in accordance with the outdoor air compensation program by the automatic control of the controller 450 according to the indoor temperature, the outdoor temperature, and the carbon dioxide concentration of the indoor air, and the first inlet 411a and the second inlet 411b are proportional It can be opened and closed by a control method.

In addition, the damper 415 may be provided in an exhaust line (not shown) for exhausting indoor air to the outside, so that the first inlet 411a and the second inlet 411b and the exhaust line may be opened and closed in a proportional control manner.

7, the present invention may further include a sensing sensor 465 for sensing the temperature and / or humidity of the indoor air and the outdoor air and providing the detected temperature / humidity to the controller 450. [

The sensing sensor 465 is configured as a temperature / humidity sensor as shown in FIG. 7, and provides the controller 450 with temperature / humidity of the room and outdoor temperature / humidity.

Accordingly, the controller 450 detects the enthalpy (heat content) of indoor / outdoor air based on the indoor / outdoor air temperature / humidity sensed by the sensing sensor 465, and based on the detected enthalpy, It is possible to proportionally control the opening and closing rates of the first inlet 411a and the second inlet 411b through proportional control of the damper 415. [

The present invention may further include an exhaust line, an exhaust damper, and a carbon dioxide concentration sensor, which are not shown.

The exhaust line (not shown) is a component for discharging indoor air to the outside, and can be configured as an air-conditioning line such as a typical duct.

The exhaust damper opens and closes the exhaust line while being operated by the above-described controller, and the same configuration as that of the above-described damper can be applied.

The carbon dioxide concentration sensor senses the concentration of carbon dioxide contained in the indoor air and provides it to the controller 450.

Here, the controller 450 can control the opening / closing of the exhaust damper according to the detection signal of the carbon dioxide concentration sensor, and can control the opening / closing of the exhaust line and the second inlet 411b proportionally while controlling the damper 415 have.

That is, all control of the inflow of outdoor air, the supply of air to introduce the indoor air into the casing 410 and the exhaust to exhaust the indoor air to the outside are performed by the controller 450 according to the indoor / outdoor temperature and the concentration of the carbon dioxide in the indoor space Can be proportionally controlled by automatic opening and closing of the damper 415 and the exhaust damper.

The discharge port 412 may include a plurality of flow paths so that the direction of discharge of air is different from that of the discharge port 412 to selectively discharge the discharge direction of air. As shown in Fig.

The outlet 412 may also consist of a PK type diffuser, commonly known as a punky nozzle or bunker nozzle, to vary the discharge direction while extending the discharge distance of the air.

The puncture nozzle is composed of a hemispherical nozzle body and a tubular discharge tube communicating with the nozzle body in the same manner as the nozzle body, and is generally in the form of a bottle. The nozzle body is rotatably coupled to the casing 410, And the discharging distance of the air can be extended by forming the discharging pipe to be narrower than the nozzle body.

2, the blowing fan 420 is installed in the communication space 413 of the casing 410. The blowing fan 420 is a member for providing a vacuum for introducing air into the inlet port 411 of the casing 410 And is operated under the control of the controller 450, which will be described later, to move the air to the outlet 412 by providing a vacuum to the inlet 411.

The detailed configuration of the blowing fan 420 is not limited, and a detailed description of the blowing fan 420 will be omitted, since any configuration known in the art to which the present invention belongs may be applied.

The heat exchange member 430 is a component that cools or heats the air moving by the blowing fan 420.

In this heat exchange member 430, a fluid supplied from a boiler or a cooler (not shown) flows into the interior of the heat exchange member 430 under the control of the controller 450, and the air in the communication space 413 is heated And cooled.

3, the heat exchange member 430 may include an oval coil 431 and a radiating fin 432. [

The oval coil 431 is formed of a plurality of tubes and cools or heats the air while flowing the fluid.

Here, the oval coil 431 is formed in an elliptical cross-section as shown in FIG. 4, and has a long axis in the air moving direction.

The air contact coil 431 can expand the thermal contact area with the air to improve the cooling and heating efficiency of the air and prevent the air flow at the rear end of the coil from being vortexed, thereby preventing scattering of condensed water during cooling.

For example, the coil having a circular cross section has a narrow thermal contact area with the moving air. In particular, since the outer peripheral surface of the rear end, through which the air escapes toward the discharge port 412, has almost no contact with air, And the water droplets formed therein are scattered toward the discharge port 412 by the swirling phenomenon of air while flowing along the outer circumferential surface of the thermal contact coil 431.

On the other hand, since the thermal contact area of the elliptical type of the oblique coil 431 with respect to the moving air extends to the discharge port 412, the water generated in the outer circumferential surface is minimized in the form of water droplets, and even if water drops are formed, And flows downward.

The oval coil 431 of the present invention smoothly cools or heats the air by the blowing fan 420, and particularly reduces the scattering of moisture generated during cooling to the outlet 412.

Here, the casing 410 is provided with a drain (not shown) for discharging the condensed water.

As shown in FIGS. 3 and 4, the heat dissipation fins 432 are stacked in a spaced state while being passed by an oval coil 431 to dissipate heat or cool air of the ougment coil 431.

These radiating fins 432 may be stacked while being spaced apart through the configuration of the spacers.

For example, the spacer may be constituted by the projecting pipe 433 as shown in Fig.

As shown in FIG. 3, the protruding pipe 433 protrudes in a tubular shape at the penetrating portion of the oval coil 431 and is caught by another radiating fin 432, as the same body as the radiating fin 432.

That is, the radiating fins 432 are inserted in the stacking state in the oval coil 431 through the protruding pipes 433, and are spaced apart from the protruding pipes 433 by the protruding pipes 433 of the other radiating fins 432 And the air is heated or cooled while the air is passed through the space.

The warming member 440 is a component for further heating or cooling the heat-exchanged air by the heat-exchanging member 430.

For example, the heating member 440 is composed of a thermoelectric element 441 and a thermally radiating fin 442, as shown in Fig. 5, which further heats or cools the air while generating heat or absorbing heat.

The thermoelectric element 441 utilizes the Peltier effect as it is known, and it generates heat or endothers depending on the direction of the current and provides heat or cold.

As shown in FIG. 5, the thermally conductive heat dissipation fins 442 are fixed to the thermoelectric elements 441 in plural and transfer heat or cool air to the air while being in thermal contact with the air.

Accordingly, the air cooled / heated by the heat exchange member 430 can be discharged to the set temperature while being further cooled or heated by the heating member 440. [

Accordingly, the present invention enables additional individual cooling / heating by the heating member 440 against the central cooling / heating by the heat exchange member 430.

Meanwhile, the heat exchange member 430 of the present invention may further include a moisture scattering prevention guide 480 as shown in FIG.

The moisture scattering prevention guide 480 interferes with the condensed water on the surface of the heat exchanging member 430 which moves together with the air due to the excess wind speed of the air blowing fan 420 during cooling and splashes water to the outlet 412 .

For example, the moisture scattering prevention guide 480 may include a pair of shield plates 481 mounted on the heat radiating fins 431 in a state adjacent to the overcurrent coil 431 and the protruding pipe 433 as shown in FIG. 6 .

As shown in FIG. 6, the pair of shield plates 481 are symmetrically disposed about the long axis of the oblong coil 430 having an elliptical cross section, Thereby forming an inclined surface.

That is, the shield plate 481 forms an inclined surface on the side of the discharge port 412 of the oval coil 430, so that moisture is discharged to the discharge port 412 due to the excess wind speed while interfering with the air contacted with the outer peripheral surface of the oval coil 430. .

As shown in FIG. 6, the shield plate 481 includes an inlet portion 481a having a shape in which the mutual intervals of the inclined planes are narrowed, and a discharge portion 481b having a wide interval between the inclined planes. The flow rate of the air is varied to smoothly discharge the air.

That is, the air having passed through the oval coil 430 flows into the inflow portion 481a along with the moisture. As the distance between the inclined surfaces becomes narrower, the flow velocity increases, and the discharge portion 481b, So that the cross-sectional area is expanded to be smoothly discharged to the discharge port 412.

The controller 450 controls the operation of the blowing fan 420, the boiler or the cooler, the heating member 440 and the damper 415 to control the temperature of the room to a predetermined temperature as shown in FIG.

The controller 450 operates through a user command input through a control panel or a remote control, and can operate the above-described components based on the temperature of the indoor and the outdoor temperature sensed by the sensing sensor 465.

The controller 450 can control the opening and closing rates of the first inlet 411a and the second inlet 411b proportionally through the proportional control of the damper 415 while sensing and comparing the indoor temperature and the outdoor temperature have.

Meanwhile, the controller 450 may be connected to the remote controller 490 as shown in FIG. 7 and may be remotely controlled through a communication device such as a smart phone or a tablet computer.

The remote controller 490 is a component that provides an interface for remote control while being mounted on or connected to the controller 450.

For example, the remote controller 490 may include a Wi-Fi communication module, a Bluetooth communication module, a WiBro communication module, or a power line control transceiver that provides a remote control mode of the controller 450 while being connected to a communication device through a wireless network.

2, the photocatalytic lamp 470 may be installed in the communication space 413 of the casing 410. [

The photocatalyst lamp 470 is a member for providing an antibacterial and deodorizing effect through a photochemical reaction. The photocatalyst lamp 470 emits light by a power source under the control of the controller 450 and purifies harmful substances of outdoor air introduced into the room.

The photocatalyst lamp 470 may include a base member 710, an ultraviolet lamp 720, a photocatalyst grill 730, and a photocatalyst guide 740, as shown in FIG.

The base member 710 is fixed to the communication space 413b while being fixed to the casing 410. [ The base member 710 may be provided with members for interrupting and controlling the power of the ultraviolet lamp 720, such as a ballast not shown.

The ultraviolet lamp 720 emits ultraviolet rays while being emitted from the base member 710.

Ultraviolet rays have germicidal power as it is known. Particularly, those having a wavelength of around 250 nm have a large sterilizing power, and 99% of Escherichia coli, Diphtheria, and Heterogeneous bacteria are sterilized by irradiating ultraviolet ray having a intensity of 100 μW per 1 cm 2 for 1 minute.

The type and detailed configuration of the ultraviolet lamp 720 are well known in the art to which the present invention pertains, and therefore, a detailed description thereof will be omitted.

The photocatalyst grill 730 is a member for decomposing harmful substances while reacting with the light of the ultraviolet lamp 720 by receiving the ultraviolet lamp 720 in a state in which the photocatalyst is coated.

Here, the kind of the photocatalyst is not limited, and any structure known in the art to which the present invention belongs can be adopted, for example, a titanium dioxide photocatalyst.

The titanium dioxide photocatalyst is an n-type semiconductor. When ultraviolet rays (400 nm) are received, an electron and an electron hole are formed to produce hydroxyalcic acid (-OH) and superoxide having strong oxidizing power. Hydroxy radicals and superoxide decompose organic compounds into water and carbon dioxide.

In this way, pollutants in the air are oxidized and decomposed into harmless water and carbon dioxide, and the organic compounds, which are contaminants in the water, are decomposed into water and carbon dioxide. Since bacteria are also organic compounds, they are oxidized and decomposed by the strong oxidizing action of the photocatalyst and sterilized.

The photocatalyst grille 730 is formed in a tubular shape as shown in FIGS. 8 and 9, and is coated on the inner circumferential surface and the outer circumferential surface of the photocatalyst, and is detachably coupled to the base member 710, And a plurality of through holes 731 are formed to transmit the light of the ultraviolet lamp 720 to the outside.

Here, the photocatalyst grille 730 may be screwed to the base member 710, or may be detachably coupled through a fixing protrusion (not shown) or a separate fixing member such as a fixing bolt.

The photocatalyst guide 740 is a component for increasing the contact time between the air introduced into the photocatalyst grille 730 and the photocatalyst.

8 and 9, the photocatalyst guide 740 may be formed of a stone plate 641, for example.

As shown in the figure, the stone plate 741 protrudes in an arc shape on the inner circumferential surface of the photocatalyst grille 730 and alternately protrudes along the longitudinal direction of the photocatalyst grille 730 in a symmetrical state, thereby bypassing the air.

That is, as the air introduced into the photocatalyst grille 730 moves in a zigzag manner by the alternate state stone plate 741, the contact time with the photocatalyst agent is increased, so that the harmful substances can be purified smoothly.

Alternatively, the photocatalyst guide 740 may be a screw guide plate projecting in the form of a screw along the inner circumferential surface of the photocatalyst grille 730 to guide the air in a rotated state.

In addition, the photocatalytic lamp 470 of the present invention may further include a reflection plate 750 as shown in FIG.

The reflector 750 reflects the light of the ultraviolet lamp 720 transmitted through the transmission hole 731 of the photocatalyst grille 730 and thereby generates a component for guiding the reaction of the photocatalyst coated on the outer circumferential surface of the photocatalyst grille 730 to be.

Here, since the ultraviolet lamp 720 is accommodated in the photocatalyst grille 730, the ultraviolet lamp 720 directly irradiates light only to the inner circumferential surface of the photocatalytic grille 730, and it is impossible to directly irradiate light to the outer circumferential surface.

9, the reflection plate 750 directly reflects the light of the ultraviolet lamp 720 from one side of the photocatalyst grille 730 and directly irradiates the outer surface of the photocatalyst grille 730 to the photocatalyst grille 730, The photocatalyst coated on the outer circumferential surface can decompose harmful substances in the air while reacting smoothly with the light of the ultraviolet lamp 720 reflected by the reflection plate 750.

The reflector 650 may be made of, for example, a metal mirror having durability, and may be fixed to the base member 710 or attached to the casing 410, as shown in FIG. 9, Or on both sides.

The operation and operation of the present invention including the above-described components will be described.

The controller 450 controls the operation of each component as the temperature of the room is set by the user through direct control through the control panel.

At this time, the controller 450 senses and compares the indoor temperature and the outdoor temperature through the sensing member (not shown), and controls the first inlet 411a and the second inlet 411b through the proportional control of the damper 415, Respectively.

The blowing fan 420 operates by the controller 450 to suck the air flowing into the inlets 411a and 411b and to move them to the outlet 412. [

The oval coil 431 cools or heats the air discharged to the discharge port 412 while being in thermal contact with the air through the fluid supplied from the boiler or the cooler according to the set temperature of the controller 450.

At this time, since the oval coil 431 is formed in an elliptical cross section, the thermal contact area with air expands to smoothly cool and heat the air, and the oval coil 431 is generated on the outer peripheral surface of the oug coil 431 Condensate flows to the unshown drain with minimal condensation in the form of dew.

On the other hand, the moisture moved together with the air by the excess wind speed of the blowing fan 420 flows into the inflow portion 481a of the shield plate 481, is interfered by the inclined surface and is not scattered to the discharge port 412, Is smoothly discharged to the discharge portion 481b of the plate 481 and then moved to the discharge port 412 side of the casing 410. [

The thermoelectric element 441 constituting the heating member 440 operates under the control of the controller 450 and further heats or cools the heat exchanged air through the heat exchanging member 430 to cool the air to a predetermined temperature .

Then, the photocatalyst lamp 470 sterilizes air discharged to the discharge port 412.

As described above, according to the fan coil unit 400 having the oval coil of the present invention, since the heat exchange member 430 is composed of the oval coil 431 having the long axis in the moving direction of the air, Condensation of the condensed water during cooling can be minimized and the vortex phenomenon on the rear surface of the coil can be minimized due to the air flow characteristic of the oval coil 431, It is possible to employ a blowing fan 420 having a high wind speed, thereby realizing a high-efficiency and large-capacity apparatus.

Further, since the air that has been heat-exchanged by the heat exchange member 430 is further cooled or heated by the heating member 440, the air that has been totally cooled / heated through the heat exchange member 430 is further cooled and heated And the heating member 440 is constituted by the thermoelectric element 441, which simplifies the construction and is convenient in manufacturing.

Since the damper 415 provided in the first inlet 411a and the second inlet 411b is opened and closed in a proportional control manner by the controller in accordance with the temperature of indoor and outdoor air, Thereby reducing energy consumption.

Since the protruding pipe 433 constituting the spacer is formed in the radiating fin 432 so that the radiating fin 432 is caught by another radiating fin 432, the radiating fin 432 can be firmly fixed while being spaced apart.

In addition, the pair of shield plates 481 constituting the moisture scattering prevention guide 480 are formed in the shape of a slope forming an inclined plane, while interfering with moisture through the inflow portion 481a where the gap is narrowed, The air can be discharged in a state where the scattering of moisture is blocked by the excess air velocity.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be apparent to those skilled in the art that various changes, substitutions, and alterations can be made therein without departing from the spirit of the invention.

400: fan coil unit 410: casing
411: inlet 411a: first inlet
411b: second inlet 412: outlet
413: communication space 415: damper
420: blowing fan 430: heat exchange member
431: Oval coil 432: Radiating pin
433: projecting tube 440: heating member
441: thermoelectric element 442: thermoelectric radiating fin
450: Controller 470: Photocatalytic lamp
480: Guide for preventing scattering of moisture 481: Shield plate
481a: inlet portion 481b: outlet portion
710: Base member
720: Ultraviolet lamp 730: Photocatalytic grill
731: Through hole 740: Photocatalyst guide
741: stone publication 750: reflector

Claims (9)

A fan coil unit for providing hot air or cold air while exchanging heat through heat or cool air supplied from a boiler or a cooler,
A casing having an inlet through which indoor air or outdoor air flows and an outlet through which the introduced air is discharged to the room, and a communication space through which the air is heat-exchanged while communicating the inlet and the outlet;
A blowing fan built in a communication space of the casing to suck indoor air or outdoor air while delivering vacuum pressure to the inlet, and to move the outdoor air to the outlet;
A heat exchange member installed in the communication space to heat or cool air through heat exchange between the fluid and air while flowing the fluid;
A heating member installed adjacent to the heat exchange member and the discharge port for further heating or cooling the air heat exchanged by the heat exchange member; And
And a controller for controlling operations of the blowing fan, the heat exchanging member, and the heating member,
The heat-
An oval coil having an elliptical cross section having a long axis in a moving direction of air moving by the blowing fan while passing the fluid of the boiler or the cooler; And
And a plurality of heat dissipation fins which are stacked in a state of being separated by passing through the oval coil to dissipate the cold air or heat of the oval coil,
Preferably,
A thermoelectric element that generates heat or absorbs heat by power supply by the controller; And
And a thermally radiating fins for radiating heat or cool air of the thermoelectric element.
delete The method according to claim 1,
The casing includes:
A first inlet for introducing indoor air while constituting the inlet; And
And a second inflow port for introducing outdoor air in a state of being separated from the first inflow port,
Further comprising: a damper installed in each of the first inlet and the second inlet to open and close the first inlet and the second inlet while being operated under the control of the controller, unit.
The method of claim 3,
The controller comprising:
Wherein the opening / closing rate of the first inlet and the second inlet is proportionally controlled while controlling the damper according to the indoor air or the temperature of the outdoor air.
The method according to claim 1,
The heat-
And a spacer for stacking the radiating fins in a spaced apart state,
The spacer
And a protruding tube protruding from the penetrating portion of the obliqueness coil and protruding in a tubular shape along the longitudinal direction of the obliquely coil so as to be caught by another radiating fin, unit.
The method of claim 5,
The heat-
Further comprising: a water scattering prevention guide installed on the radiating fin in a state of being adjacent to the protruding pipe through which the air leakage coil passes, to block moisture moving together with the air.
The method of claim 6,
In the moisture scattering prevention guide,
And a pair of shield plates symmetrical about a long axis of the oblique coil and interfering with the movement of moisture while forming an inclined surface that becomes narrower toward the discharge port side.
The method of claim 7,
The pair of shield plates may be formed,
An inflow portion in which the air in contact with the outer circumferential surface of the oval coil flows together with moisture while forming a shape of a cap having a narrowed interval at one end in a state adjacent to the oval coil; And
And a discharge part extending in a symmetrical state with respect to the inflow part and discharging the air of the inflow part while forming a shape in which the interval between the end parts is widened.
The method according to claim 1,
Further comprising a photocatalytic lamp provided in the communication space of the casing for sterilizing air discharged to the discharge port.

Images