KR100964564B1 - Slope-type coil for preventing freeze and crack in air-conditioner - Google Patents

Abstract

PURPOSE: Slope-type coil for preventing an air conditioner from freezing and bursting is provided by changing the structure of the cooling/heating coil of an air conditioner to a slope type to naturally discharge the water remaining in the cooling/heating coil. CONSTITUTION: Slope-type coil(100) for preventing an air conditioner from freezing and bursting comprises a frame, a slope-type coil tube(110), a header(130), a temperature sensor, and a controller. The frame supports and protects cooling/heating coil. As cold water or hot water circulates through the slope-type coil tube, temperature or humidity is changed by heat exchange. The header is coupled to the slope-type coil tube, supplies the cold water or the hot water incoming from the outside through a pipe to the slope-type coil tube and discharges the cold water or the hot water heat-exchanged in the slope-type coil tube to the outside. If the operation of the cooling/heating coil stops, the water remaining in the slope-type coil tube is naturally discharged along the slope of the slope-type coil tube. The temperature sensor senses the ambient temperature of the slope-type coil tube. The controller outputs a control signal for raising or lowering one side of the cooling/heating coil, if the ambient temperature detected with the temperature sensor is lower than a reference value.

Description

Slope-type coil for preventing freeze and crack in air-conditioner

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly, to a slope-type coil for preventing freezing waves caused by residual water remaining in a cooling and heating coil installed in an air conditioner.

Air Conditioning means that the air in the room or a specific space is adjusted to a suitable state to suit the purpose of use, so that the temperature, humidity, ventilation, cleanliness and It is to maintain and adjust the air movement (air movement) to the appropriate state.

An air conditioner refers to a device that produces cold and warm air by receiving heat medium such as cold water, hot water, and steam from a heat source device such as a refrigerator or a boiler in order to control and maintain an air condition suitable for a certain space. FIG. 1 is a view illustrating a general air conditioner and illustrating a modular air conditioner installed in a large building or the like.

As shown in FIG. 1, a general air conditioner includes a mechanical device including a temperature controller, a humidity controller, a filtration device for cleaning air, and a blower for moving and circulating air. It may include a blower, an air filter, a heating and cooling coil, and a ventilation blower.

Specifically, the air conditioner is a device for maintaining indoor air comfort by performing the cooling, heating, dehumidification action by forcibly suctioning the indoor air, it can be classified as a cooler, a heater, a dehumidifier according to the function. The air conditioner is provided with a cooling device by a refrigerant circulating a compressor, a heat dissipation capacitor (outdoor device) and an evaporator, and a heating device by an electric heat heater to maintain the room temperature at a constant set temperature for each season. In addition, the air conditioner is equipped with a hot gas controller (hot gas controller) or a control unit (room) when the temperature of the room (room) is out of a predetermined range or more than a predetermined range, it detects this to automatically cool or heat, Depending on the dehumidification function can be performed.

An air conditioner having such a structure can perform effective cooling and heating by combining organically the functions of an evaporator, a reheat capacitor, and a radiator and improving a refrigerant circulation path, but an air conditioner is mainly installed in a business building such as a building or a factory. Therefore, the operation is stopped after work in winter or on holiday, and heating is not performed when the operation is stopped.Therefore, the water (residual water) remaining in the heating and cooling coils is frozen and the heating and cooling coils are frozen or radiated by the radiator. There was a problem that the restart was delayed.

2 is a view for explaining the operation of a horizontal coil for an air conditioner according to the prior art, Figure 3 is a perspective view and a cross-sectional view of a horizontal coil for an air conditioner according to the prior art, Figures 4a and 4b is a conventional Figure is a diagram illustrating that a horizontal coil is installed in the air conditioner according to the technique.

2 and 3, the horizontal coil 10 for an air conditioner according to the related art includes a coil tube 11, a heat dissipation fin 12, a header 13, a frame 14, and an upper and lower pipes ( 15a. 15b) and the like, and are fixed on the frame 14 so that the coil tube 11 is disposed horizontally, and is coupled to the header 13. 4A shows a horizontal coil 10 in which the coil tube 11 is arranged horizontally, and FIG. 4B shows that this horizontal coil 10 is installed in the coil housing 20 of the air conditioner.

Specifically, the cooling and heating coils used in the air conditioner are largely divided into cold water coils, hot water coils, steam coils, etc., and they change the temperature or humidity of the surroundings while transferring or dissipating heat as the refrigerant passes into the cooling and heating coils. Since the heating and cooling coils are generally formed in the horizontal direction with the bottom, the flow in the heating and cooling coils is not easy and the residual moisture or condensed water cannot be discharged completely. Will occur.

In order to prevent such coil freezing, there is a method of preventing freezing by simply applying a temperature sensor and applying heat when it falls to a certain temperature. However, since the structure is complicated and installation and maintenance costs are high, freezing can be improved while improving structural problems. A way to prevent was developed.

For example, there is a damper coil that controls the static area of the coil and prevents the generation of residual condensate and water, but it is less energy efficient and reduces the static area of the coil in the same space, resulting in faster flow rates. There is a concern that the scattering of moisture due to, there was a problem that the maximum amount of heat is lower than the general coil.

As another example, the residual moisture in the coil increases the internal pressure of the coil due to freezing and an increase in volume, thereby preventing a breakage of the coil by installing a relief cap that pops up at a predetermined pressure on the protruding coil side. After the damage to the need for additional maintenance, there was a problem that the maintenance and related parts after the coil installation is required.

In addition, there are double tube coils that form coil tubes into double tubes, and non-freezing coils that gradient the exit of the coils, but these usually do not fully demonstrate freezing performance or still have residual condensate There was a problem remaining.

On the other hand, as a prior art for solving the above-mentioned problems, Korean Patent Application No. 2005-0022115 (Application Date: March 17, 2005) is named the invention of the "hot water and steam coil freeze protection device of the air conditioner" The present disclosure provides a hot water and steam coil freeze protection device of an air conditioner capable of automatically discharging water inside a coil by automatically discharging water inside the coil when the winter air conditioner is stopped. 5 is a view illustrating a part of an air conditioner equipped with a coil freeze protection device according to the related art.

5 is a part of the housing 31 having a leg 33, the control unit 61, the evaporator 37, the reheat capacitor 39, except for the compressor, outdoor unit, blower, boiler, etc. among the components of the air conditioner ), A radiator 41 and a coil 43 inserted into the radiator 41 to circulate hot water and steam.

The control unit 61 is typically used for on / off of a power supply of an air conditioner, a compressor, an outdoor unit, a blower, an electric heater, and a boiler.

The coil 43 is connected to the input pipe 45 for inputting hot water or steam from the boiler and the output pipe 47 for returning the hot water or steam to the boiler after heat dissipation, and is supplied after the hot water or steam is circulated and discharged.

To this end, the input pipe 45 is connected to the outlet of the hot water boiler, the upper end is formed of a closed cylindrical tube and is connected to the coil 43 in the middle. In addition, the output tube 47 is formed of a cylindrical tube closed at the top and connected to the inlet of the hot water boiler, and connected to the coil 43 at the middle thereof. By this structure, natural hot water or steam can be circulated.

The upper end of the input tube 45 is provided with an open tube 49 of a tubular shape that allows the inside of the input tube 45 to communicate with the outside, and opens and closes the open tube 49 in the control unit 61. The solenoid valve 51 is installed in the open pipe 49 so as to be able to do so, and the lower end of the output pipe 57 is provided with a tubular suction pipe 53 through which water inside the output pipe 55 can be discharged. In addition, the inlet includes a pump 55 connected to the suction pipe 53, and configured to enable the controller 55 to turn on / off the pump 55.

When the operation of the air conditioner is stopped, the controller 61 opens the solenoid valve 51 and drives the pump 55 to discharge water remaining in the coil 43. At this time, when the coil is not opened to the outside air in the process of discharging water inside the coil 43, the open tube 49 is provided in consideration of the fact that the inside of the coil is in a vacuum state so that all residual water cannot be discharged. . The open pipe 49 is closed by the solenoid valve 51 during the operation of the air conditioner.

In addition, the residual water sucked into the suction pipe 53 connected to the output pipe 47 by the pump 55 is discharged through the discharge pipe 57 provided at the outlet of the pump 55, and the residual water is discharged from the housing 31. After stuck to the bottom of the drain can be discharged to the outside through (59).

However, in the case of an air conditioner equipped with a coil freeze protection device according to the prior art, the remaining water is forcibly discharged by additionally providing an open pipe 49, a solenoid valve 51, a suction pipe 53, and a pump 55. . Accordingly, the structure is complicated, and there is a problem that the cost increases.

On the other hand, as another prior art for solving the above-described problems, Korean Patent Application No. 2005-0094659 (Application Date: October 08, 2005) discloses the invention of the name "freeze protection vertical coil unit" is disclosed. .

This prior art has a closed upper header and a lower header having a circular or semi-circular cross section up and down, respectively, and constitutes a coil unit in which a heat conductive coil having high thermal conductivity is fixed therebetween, so that steam introduced to one side of the upper header or The refrigerant (water) passes through the heat radiating coil and back to the lower header to exchange heat, and the water flows out through the vertically arranged and fixed heat radiating coil, thereby preventing the refrigerant or residual water from remaining inside the coil unit. To prevent freezing in winter. 6 is a view showing a vertical coil unit for preventing a freeze according to the prior art.

Referring to FIG. 6, the freeze protection vertical coil unit according to the related art includes a heat dissipation coil 90, a header 70, and a frame 80, and the heat dissipation coil 90 has an outer circumferential surface of a tube having a predetermined length. The fins for heat dissipation are integrally formed in the heat dissipation coil 70, and the heat dissipation coil 70 may have a plurality of plate-shaped fins formed at regular intervals along the tube.

The heat dissipation coil 90 is made of metal having good thermal conductivity, and the tube is usually made of copper, the fin is made of aluminum, and the heat dissipation coil 90 is vertically fixed in consideration of being fixed vertically. It is preferable to wind it into a shape, which minimizes the formation of a water film by flowing down condensate generated on the surface of the helical fin and does not lower the heat transfer rate between the outside air and the heat dissipation coil 90.

The header 70 is composed of an upper header and a lower header, which have a certain length in a circular or semi-circular cross section with a predetermined thickness, have a closed structure inside of it, and also have one surface (a flat surface when the cross section is semi-circular). In the plurality of through holes 71 are formed at regular intervals, the heat radiation coil 90 is fixed to each of the through holes 71 in the state facing the upper header and the lower header.

In addition, each end of the upper header and the lower header is formed through the inlet and outlet holes 72, the outlet hole 72 of the upper header is fixed to the pipe 73 of a predetermined length, the outlet and inlet hole 72 of the lower header The U-bend (U-bend), which is a U-shaped pipe, is fixed thereto, but the U-bend 74 is slightly obliquely fixed up and down, and the other end that is not fixed falls into the lower side of the lower header. A pipe 75 longer than the lower header is fixed to the juve 74.

Frame 80 is composed of the upper and lower cover 81, the side cover 82, the support frame 83, depending on the shape and the position of the assembly, the side cover 82 is a fixed hole through which both ends are blocked A plurality is formed. In addition, the support frame 83 has a plurality of fixing holes penetrated at both ends thereof, and a support hole 83b penetrated to the extent that the respective pipes 73 and 75 and the juve 74 of the header 70 are fitted. do.

However, in the case of the freeze protection vertical coil unit according to the prior art, since the coil 90 is installed vertically, cold water or hot water must be reciprocated vertically, and the supply pressure of cold water or hot water must be increased, and the vertical of cold water or hot water must be increased. There is a problem that the circulation is not smooth, and there is a problem that the structure is too complicated, such as forming the coil 90 in a spiral shape in order to form the coil 90 vertically.

The technical problem to be solved by the present invention for solving the above-mentioned problems, by simply changing the structure of the air-conditioning coil of the air conditioner to the inclined type, to naturally discharge the residual water remaining in the air-conditioning coil to prevent freezing It is to provide an inclined coil for preventing the freezing of the air conditioner.

Another technical problem to be achieved by the present invention is an inclined type for preventing the freezing of an air conditioner capable of automatically varying the inclination angle of the inclined coil for discharging residual water remaining in the air conditioning coil of the air conditioner according to the measurement temperature. To provide a coil.

As a means for achieving the above-described technical problem, the inclined coil for preventing the freezing of the air conditioner according to the present invention, in the air-conditioning coil provided in the air conditioner, consisting of the upper and lower cover, the side cover and the support frame, A frame for supporting and protecting the coil; An inclined coil tube installed on the frame to have an inclination and changing ambient temperature or humidity by heat exchange while cold or hot water circulates; And a header fastened to the inclined coil tube and providing cold water or hot water introduced through a pipe from the outside to the inclined coil tube, and discharging the cold water or hot water that has undergone heat exchange in the inclined coil tube to the outside ( Including a header), when the operation of the heating and cooling coil is off, the residual water remaining in the inclined coil tube is naturally discharged along the inclination of the inclined coil tube.

Here, the inclined coil tube is fastened to the inside of the header having a predetermined interval and inclination.

Here, the inclination angle of the inclined coil tube can be varied according to the ambient temperature.

Here, the inclined coil for preventing the freezing of the air conditioner according to the present invention, the temperature sensor is installed on one side of the coil for heating and heating, sensing the ambient temperature of the inclined coil tube; A control unit for outputting a control signal for raising or lowering one side of the coil for heating and heating when the ambient temperature detected by the temperature sensor is equal to or less than a reference value; And an elevating driving part fixed to one lower side of the coil for heating and heating and driven by the control signal to change an inclination angle of the coil for heating and cooling.

Here, the inclination angle of the inclined coil tube can be varied in the range of 5 ° to 30 °.

According to the present invention, by simply changing the structure of the air-conditioning coil of the air conditioner to the inclined type, it is possible to naturally discharge the residual water remaining in the air-conditioning coil to prevent freezing. That is, it is possible to prevent freezing by simply removing residual water without adding a separate device for freezing or forming a complicated coil structure.

According to the present invention, the inclination angle of the inclined coil for discharging the residual water remaining in the air conditioning coil of the air conditioner can be automatically changed according to the measurement temperature.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

As an embodiment of the present invention, by simply changing the structure of the air-conditioning coil of the air conditioner to the inclined type, for freezing prevention of the air conditioner that can naturally prevent the residual water remaining in the air-conditioning coil to prevent freezing An inclined coil is provided.

7 is a view for explaining the operation of the inclined coil for preventing the freezing of the air conditioner according to an embodiment of the present invention.

Referring to FIG. 7, the inclined coil 100 for preventing a freezing of an air conditioner according to an exemplary embodiment of the present invention may include a coil tube 110, a heat radiation fin 120, a header 130, a frame 140, and an upper pipe. 150a and bottom pipe 150b. The coil for cooling and heating mentioned in the embodiment of the present invention changes the temperature or humidity of the surroundings while transferring or dissipating heat while the refrigerant passes into the coil, and may be a cold water coil, a hot water coil, or a steam coil.

 Frame 140 is composed of a top and bottom cover, a side cover and a support frame to support and protect the coil 100 for heating and cooling.

The inclined coil tube 110 is installed to have an inclination on the frame 140 and changes ambient temperature or humidity by heat exchange while cold water or hot water circulates. At this time, the inclined coil tube 110 is fastened to the inside of the header 130 having a predetermined interval and inclination. In addition, the inclination angle of the inclined coil tube 110 can be varied according to the ambient temperature, for example, the inclination angle of the inclined coil tube 110 can be varied in the range of 5 ° to 30 °. In addition, when the inclination angle of the inclined coil tube 110 is less than 5 °, it may not be easy to discharge residual water, and in the case where the inclination angle of the inclined coil tube 110 exceeds 30 degrees, inclined type Since the pressure provided when the coil tube 110 is normally driven, the inclination angle of the inclined coil tube 110 may be varied in a range of 5 to 30 degrees, and the inclined coil tube 110 may be inclined. If the inclination angle is less than 5˚, it may not be easy to discharge residual water, and if the inclination angle of the inclined coil tube 110 exceeds 30˚ when the inclined coil tube 110 is normally driven To increase the pressure Angle of inclination of the inclined exchanger coil tube 110 can be varied in the range of 5˚ to 30˚.

A plurality of heat dissipation fins 120 are formed, and integrally formed to protrude from the inclined coil tube 110, thereby improving heat exchange efficiency.

The header 130 is fastened to the inclined coil tube 110 and provides the inclined coil tube 110 with cold or hot water introduced from the outside through the upper pipe 150a to the inclined coil tube 110. Cold water or hot water that has undergone heat exchange in 110 is discharged to the outside through the lower pipe 150b. In addition, a residual water outlet is formed in the lower pipe 150b to discharge the residual water discharged through the inclined coil tube to the outside.

When the operation of the heating and cooling coil 100 is turned off, residual water remaining inside the inclined coil tube 110 may be naturally discharged along the inclination of the inclined coil tube 110.

The inclined coil 100 for freezing prevention of an air conditioner according to an embodiment of the present invention is manufactured by installing the coil 100 in an inclined shape so as to completely discharge coil residual water from the inclined coil tube 110 to operate in winter. It is possible to prevent freezing of the coil 100 for cooling and heating at the time of stop.

8 is a perspective view and a cross-sectional view of the inclined coil for preventing the freezing of the air conditioner according to an embodiment of the present invention, Figures 9a and 9b is a freeze preventing inclined coil installed in the air conditioner according to an embodiment of the present invention It is an illustration to illustrate.

As shown in Figure 8a) and 8b), the inclined coil 100 for preventing the freezing of the air conditioner according to an embodiment of the present invention has an inclination angle with respect to the ground.

The inclined coil 100 for preventing the freezing of an air conditioner according to an exemplary embodiment of the present invention has a shape as shown in FIG. 9A and may be installed on the coil housing 200 as shown in FIG. 9B. have.

On the other hand, Figures 10a and 10b is a diagram illustrating a freeze wave prevention inclined coil installed in the air conditioner according to an embodiment of the present invention.

As described above, the inclination angle of the inclined coil tube 110 can be varied according to the ambient temperature, the inclined coil for preventing the freezing of the air conditioner according to the present invention, as shown in Figure 10a, The sensor 160, the controller 300, and the lift driver 170 may be further included.

The temperature sensor 160 is installed on one side of the heating and cooling coil 100 to detect the ambient temperature of the inclined coil tube. At this time, since the temperature sensor for sensing the ambient temperature may already be provided in the air conditioner, the temperature sensor 160 may not be separately installed.

The control unit 300 controls to raise or lower one side of the heating / heating coil 100 when the ambient temperature detected by the temperature sensor 160 is lower than or equal to a reference value, for example, when the temperature is 2 ° C. or lower in winter. Output the signal. In this case, the control unit 300 may be implemented in the control unit for controlling the air conditioner without separately installing.

The lift driver 170 may be fixed to one lower side of the coil 100 for cooling and heating, and may be driven by the control signal to vary the inclination angle of the coil 100 for heating and cooling. As shown in FIG. 10B, the lifting driving unit 170 may be installed between the coil housing 200 and the cooling / heating coil 100. In this case, the lifting driving unit 170 may use any means as long as it can raise or lower one side of the heating and cooling coil 100.

As a result, the inclined coil 100 for preventing the freezing of an air conditioner according to an embodiment of the present invention simply changes the structure of the cooling and heating coil of the air conditioner to an inclined shape, thereby naturally remaining water remaining in the heating and cooling coil. It can be discharged to prevent freezing. That is, it is possible to prevent freezing by simply removing residual water without adding a separate device for freezing or forming a complicated coil structure. In addition, the inclination angle of the inclined coil for discharging residual water remaining in the air conditioning coil of the air conditioner can be automatically changed according to the measurement temperature.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

1 is a diagram illustrating a general air conditioner.

2 is a view for explaining the operation of the horizontal coil for an air conditioner according to the prior art.

3 is a perspective view and a cross-sectional view of a horizontal coil for an air conditioner according to the prior art.

4A and 4B illustrate a horizontal coil according to the related art installed in an air conditioner.

5 is a view illustrating a part of an air conditioner equipped with a coil freeze protection device according to the related art.

6 is a view showing a vertical coil unit for preventing a freeze according to the prior art.

7 is a view for explaining the operation of the inclined coil for preventing the freezing of the air conditioner according to an embodiment of the present invention.

8 is a perspective view and a cross-sectional view of the inclined coil for preventing the freezing of the air conditioner according to an embodiment of the present invention.

9A and 9B are diagrams illustrating a freezing wave preventing gradient coil installed in an air conditioner according to an embodiment of the present invention.

10A and 10B are diagrams illustrating a freezing wave preventing gradient coil installed in an air conditioner according to an embodiment of the present invention.

<Brief Description of Drawings>

100: freeze protection gradient coil

110: inclined coil tube 120: heat dissipation fin

130: header 140: frame

150a: upper pipe 150b: lower pipe

160: temperature sensor 170: lifting drive unit

200: coil housing 300: control unit

Claims (5)

delete delete delete delete In the air-conditioning coil provided in the air conditioner, A top frame, a side cover, and a support frame, the frame supporting and protecting the heating and cooling coil; An inclined coil tube installed on the frame to have an inclination and changing ambient temperature or humidity by heat exchange while cold or hot water circulates; And A header coupled to the inclined coil tube and providing cold water or hot water introduced through a pipe from the outside to the inclined coil tube, and discharging the cold water or hot water that has undergone heat exchange in the inclined coil tube to the outside. Including, When the operation of the heating and cooling coil is turned off, the residual water remaining inside the inclined coil tube is naturally discharged along the inclination of the inclined coil tube. The inclined coil tube is engaged with the inside of the header at regular intervals and inclinations, A temperature sensor installed at one side of the coil for heating and heating to detect an ambient temperature of the inclined coil tube; A control unit for outputting a control signal for raising or lowering one side of the coil for heating and heating when the ambient temperature detected by the temperature sensor is equal to or less than a reference value; And It is further fixed to one lower side of the heating and cooling coil, and driven by the control signal further includes a lift drive unit for varying the inclination angle of the heating and cooling coil so that the residual water remaining in the cooling and heating coil naturally, The inclination angle of the inclined coil tube is variable in the range of 5 ° to 30 ° so that the inclination angle of the inclined coil tube can be varied in accordance with the ambient temperature inclined coil for preventing the air conditioner.

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