KR101871393B1 - Air conditioner - Google Patents

Abstract

The present invention relates to a dual heat exchange type outside air introduction type air conditioner of periodically changing an air inlet and an air outlet, which can increase the heat exchange efficiency through direct contact of air to be supplied and discharged. The dual heat exchange type outside air introduction type air conditioner of periodically changing an air inlet and an air outlet includes an air supply unit, an air exhaust unit, and a damper for controlling an air flow direction to be periodically changed, first and second air exhaust and supply units for periodically changing the air supply and exhaust, and first and second heat exchange units. When the damper is operated, while the first and second air exhaust and supply units supply and exhaust air, the hit exchange is performed in the first and second heat exchange units. The air exhausting and air supplying operations of the air exhaust unit and the air supply unit are periodically changed. Accordingly, it is possible to control the flow of air through the heat exchange, and direct contact between the air and the heat exchange unit can be performed to enhance heat efficiency. Even if the separate and frost preventing facilities for preventing the freezing of winter are not installed, the exhausting and supplying operations of the first and second air exhaust and supply units may be performed alternately and periodically by the air flow control of the damper so that the freezing is prevented. Thus, the cost of installing the facility and the cost of maintenance may be reduced.

Description

[0001] The present invention relates to an air conditioner of a dual heat exchange type,

The present invention relates to a dual heat exchange type outside air introduction type air conditioner for periodically changing the air supply and exhaust air streams, which can increase the heat exchange efficiency through direct contact of air to be supplied and exhausted.

Generally, in the residential space of a residence, or in a work space of a building such as an office or an office, the cooling of the summer and the heating of the winter are the main factors of energy consumption.

In recent years, the demand for energy for cooling and heating has been rapidly increasing due to the proliferation of residential space due to population growth and the increase of factory sites and offices due to industrial development.

Such a rapid demand for energy is driving up the price of fossil fuels such as oil and natural gas.

In the fields of agriculture, livestock industry and fishery industry, managers of facility farms and aquaculture companies are under the pressure of management due to rising cost of heating and cooling due to the increase of fossil fuel prices. In the field of manufacturing, The rise in production costs of products has caused many difficulties.

In addition, this energy overproduction phenomenon is a major factor of global warming due to environmental pollution caused by soot generated in the combustion process of fossil fuel.

Recently, the heat generated and recovered in the circulation process of the compression, evaporation, and condensation of the refrigerant is used to obtain the energy equivalent to the cooling and heating effect by combustion of the fossil fuel without causing pollution. , And the use of air conditioners that perform heating is becoming common.

On the other hand, in the above-mentioned air conditioner, the cooling coil, which is a heat exchanger, and water as a heat exchanging medium that flows inside the heating coil are frozen in the winter season when the outside air temperature drops below zero, and the volume expands, Therefore, there is a problem that the cooling coil and the heating coil of the heat exchanger are damaged to partially repair or replace the whole, thereby causing time and economic loss due to maintenance and exchange.

As means for solving this problem, means are provided for cooling the heat exchanger and for preventing the freezing of the heating coils.

(Patent Document 1) and Korean Utility Model Registration No. 20-227935 entitled "Device for preventing freezing of a radiator for an air conditioner" (Patent Document 2 ) And Korean Utility Model Registration No. 20-300908 entitled " Device for preventing freezing of heat exchanger for air conditioner "(patent document 3).

In consideration of the technical contents of Patent Document 1, a coil tube inlet and an outlet of a heat exchanger are connected to each other by an auxiliary pipe, and a temperature sensor, an electric heater, a circulation pump, a check valve and a control unit are provided in the auxiliary pipe. When the auxiliary pipe falls to below zero, the temperature sensor senses this and the electric heater and the circulation pump are operated and the check valve is opened. Therefore, the fluid inside the coil tube of the heat exchanger is heated and circulated to prevent the frost wave.

When a description of the technical contents of Patent Document 2 is examined, it is a structure in which a heater that operates by receiving a signal from a temperature sensor in the vicinity of the front of the heat exchanger is installed. When the outside air temperature falls below zero, the heater operates and the coil tube of the heat exchanger is frozen .

Also in the case of Patent Document 3, when a temperature sensor is provided on a coil tube constituted in a heat exchanger and the outside air temperature falls below zero, the heater is operated by the detection of the temperature sensor to dissipate heat to prevent the coil tube of the heat exchanger from being frozen .

When the outside temperature of the engine is lowered to minus zero, the temperature sensor senses the temperature of the outside of the engine and causes the heater to operate and generate heat to prevent the coil tube of the heat exchanger from being frozen. However, Considering that it is almost zero, the operation time of the heater is increased, and the consumption of electrical energy is rapidly increased, resulting in an increase in the economic burden.

As a means for solving such a problem, Japanese Patent No. 10-784771 entitled " Device and system for preventing freezing of an air conditioner having a vertical heat exchanger "(Patent Document 4) is provided.

When examining the technical content of the Patent Document 4, a plurality of coils are vertically arranged at regular intervals and connected to each of the upper and lower heads, and then the frame is assembled to constitute a cooling coil and a heating coil. And a solenoid valve controlled by a control unit to which a temperature sensor is connected.

Accordingly, when the air conditioner is stopped, moisture remaining in the vertically formed coil is firstly discharged. If moisture remains, if the vacuum removing side is opened, the moisture remaining in the coil is discharged to the outside by the air pressure, In addition, when the temperature sensor detects the water temperature remaining in the coil and the temperature is less than 1 ° C, the solenoid valve is fully opened to completely discharge moisture in the coil.

However, in the case of the apparatus of Patent Document 4, there is a fear of malfunction due to a complicated sensing means and apparatus such as a vacuum removing valve, a temperature sensor, and a solenoid valve. When the residual moisture is not completely discharged and remains in the coil It was also a concern of the frog.

Furthermore, since there is a need for additional means for preventing freezing, there is a problem that production cost and maintenance cost are separately generated.

In order to solve the above-mentioned problems, the dual heat exchange type air introduction type air conditioner according to the present invention periodically exchanges the air supply and exhaust air according to the present invention, in which air including cold heat and heat is directly contacted with the heat exchanger to perform heat exchange, And a dual heat exchange type outdoor air introduction type air conditioner which periodically changes the air supply port and the air supply opening.

It is still another object of the present invention to provide an air supply unit and an air supply unit which periodically perform exhaust or air supply operations alternately through an air flow direction control, thereby preventing winter frost in winter.

The present invention is characterized in that the exhaust part of the first and second air and the air supply part perform heat exchange directly with the first and second heat exchange parts while air is supplied and exhausted, The damper is operated so that the operation is changed to control the flow of air so as to perform the heat exchange so that the air and the heat exchanging part are in direct contact with each other to perform heat efficiency, thereby increasing the efficiency of heat exchange.

Particularly, by controlling the airflow of the damper, the first and second air exhaust and air supply units alternately perform the exhaust and air supply operations alternately, It is a useful invention that can reduce the cost of installing the preventive facility and the cost of maintenance.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a dual heat exchange type outside air introduction type air conditioner which periodically changes the air supply and exhaust air ports according to the present invention; FIG.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dual heat exchange type air introduction type air conditioner, and more particularly to a dual heat exchange type air introduction type air conditioner.
FIG. 3 is a view showing a state in which the air flow of the dual heat exchange type outdoor air introducing type air conditioner, in which the air supply and exhaust air is periodically changed according to the present invention, is changed.

Hereinafter, the configuration of the present invention will be described in more detail with reference to the accompanying drawings.

First, the air supply unit 10 is installed in the room so as to be able to receive outside air.

The air supply unit 10 includes an air supply diffuser 11 installed in the room and an air supply fan 12 connected to the air supply diffuser 11 by an air supply line 13.

In addition, the air supply fan 12 may include a filter F, and the filter F may be a pre-filter or a medium filter.

Next, the air discharge unit 20 is installed in the room so as to discharge polluted air therein.

The air discharge port 20 is composed of an air discharge diffuser 21 installed indoors and an exhaust fan 22 connected to the air discharge diffuser 21 by an exhaust line 23.

The damper D is formed between the air supply unit 10 and the air outlet 20 so as to control the flow direction of the air. The damper D is connected to the air supply fan 10 of the air supply unit 10, And a filter (F) is formed between the filter (12).

Next, the exhaust and supply unit 40 of the first air is installed outdoors, and is coupled to the damper D described above to discharge the air from the room to the outside by the operation of the damper D And to discharge outside air to the outside of the room to supply outside air to the room.

Next, the exhausting and supplying unit 50 of the second air is installed outdoors. The damper D is coupled to the damper D and discharges the air from the room to the outside by the operation of the damper D And a discharge unit that serves to supply outside air to the room by sucking outside air.

Here, the first and second air exhaust and supply units 40 and 50 are configured to perform different roles when the flow direction of the air is controlled by the damper D.

That is, when the air supply part and the exhaust part of the first air are connected by the damper D and the exhaust part 40 of the first air is connected to the exhaust part of the first air and the air supply part 40 functions as the air supply part, 20 and the exhaust and supply unit 50 of the second air are connected to each other so that the exhaust and supply unit 50 of the second air acts as an exhaust unit.

Next, the first heat exchanging part 60 is formed between the damper D and the exhausting and supplying part 40 of the first air to absorb the heat energy including the cold heat and the heat contained in the air when the air moves .

Next, the second heat exchanging part 70 is formed between the damper D and the exhausting and supplying part 50 of the second air to absorb the heat energy including the cold heat and the heat contained in the air when the air moves .

Next, the cooling / heating unit 80 is installed between the air supply unit 10 and the damper D, and is configured to supply cold or hot when supplying air to the room.

The cooling / heating unit 80 may be any one selected from a Dx-coil unit or a common coil.

Hereinafter, the structure of the damper D and the operation and effect of the damper D will be described.

As shown in FIG. 1, the air supply unit 10 is installed in a room so as to receive external air.

The air supply unit 10 includes an air supply diffuser 11 installed in the room and an air supply fan 12 and a filter F connected to the air supply diffuser 11.

Next, the air discharge unit 20 is installed in the room so as to discharge polluted air therein.

For this, the air outlet 20 is composed of an air discharge diffuser 21 installed in the room and an exhaust fan 22 connected to the air discharge diffuser 21.

Next, the damper D is formed between the air supply unit 10 and the air outlet 20 so as to control the flow direction of the air.

The damper D includes a damper 231 connected to the air supply unit 10 and a discharge damper 232 connected to the air discharge unit 20 so as to be opened and closed .

In addition, first and second air direction switching dampers 233 and 234 controlled to be opposite to the air supply damper 231 and the air discharge portion 20 are formed.

Next, the exhaust and supply unit 40 of the first air is installed outdoors, and is coupled to the damper D described above to discharge the air from the room to the outside by the operation of the damper D And the air supply unit is configured to perform an air supply function that serves to supply outside air to the room by sucking the outside air.

Next, the exhausting and supplying unit 50 of the second air is installed outdoors. The damper D is coupled to the damper D and discharges the air from the room to the outside by the operation of the damper D And the air supply unit that serves to supply outside air to the room by sucking the outside air.

Here, the first and second air exhaust and supply units 40 and 50 are configured to perform different roles when the flow direction of the air is controlled by the damper D.

That is, when the air supply unit 10 and the exhaust and supply unit 40 of the first air are connected by the damper D and the exhaust and supply unit 40 of the first air functions as an air supply unit, The exhaust unit 20 and the exhaust and supply unit 50 of the second air are connected to each other so that the exhaust and supply unit 50 of the second air acts as an exhaust unit.

Next, the first heat exchanging part 60 is formed between the damper D and the exhausting and supplying part 40 of the first air, and when the air to be fed and discharged moves, the heat energy In direct contact with the air.

Next, the second heat exchanging part 70 is formed between the damper D and the exhausting and supplying part 50 of the second air, and when the air to be fed and discharged moves, the heat energy In direct contact with the air.

As for the operation and effect according to the above-described configuration,

When the damper 231 and the discharge damper 232 of the damper D are opened and the first and second air direction switching dampers 233 and 234 are closed as shown in FIG. 2, And the air supply unit 40 serve as an air supply unit, and the air supply and air supply unit 50 of the second air serves as an air exhaust unit.

That is, the air moves in the order of the first air exhaust and the air supply unit 40, the first heat exchange unit 60, the damper 231 of the damper D, and the air supply unit 10, The first heat exchanging part 60 is in direct contact with the outside air to perform heat exchange.

At this time, the air supply diffuser 11 is formed between the air supply fan 12 and the damper D so as to radiate cold heat for cooling in summer and radiate heat for heating in winter. The air that enters the room through the room enters the room including the heat source.

The air moves in the order of the air discharge portion 20, the discharge damper 232 of the damper D, the second heat exchange portion 70 and the second air discharge and supply portion 50, At this time, the second heat exchanging unit 70 directly contacts with the internal air to perform heat exchange.

The air damper 231 and the discharge damper 232 are controlled by a normal control unit (not shown) after 60 seconds in the process of circulation of air while the heat exchange is performed as described above. When the first and second air direction switching dampers 233 and 234 are opened, the exhaust and supply unit 40 of the first air acts as an exhaust unit and the exhaust and supply unit 50 ) Controls the flow of air so as to perform the role of the supply part.

3, the first air direction switching damper 233 and the air supply unit 10 of the second air discharge and supply unit 50, the second heat exchange unit 70, the damper D, The air flow is controlled so as to move the air, and the air supply unit 10, the second air direction switching damper 234 of the damper D, the first heat exchange unit 60, the exhaust of the first air, The air flow is controlled so that the air moves to the air supply unit 40. At this time, the indoor air including the heat source in the air conditioning unit 80 formed between the air supply fan 12 and the damper D flows into the room do.

Therefore, since the first and second heat exchange units 60 and 70 are in direct contact with the air to be supplied and discharged, heat exchange can be performed without heat loss, and also, The supply units 40 and 50 periodically change the role of the discharge unit and the supply unit so that they can play the role of preventing the freezing without the winter freezing prevention facility.

Although the preferred embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. Of course.

10:
11: air supply diffuser 12: air supply fan
20:
21: air discharge diffuser 22: exhaust fan
D: Damper
231: Supply damper 232: Discharge damper
233: first air direction switching damper 234: second air direction switching damper
40: exhaust and supply part of the first air
50: Exhaust and supply part of the second air
60: first heat exchanger
70: second heat exchanger
80: Heating / cooling unit
1: Dual heat exchange type outdoor air introducing type air conditioner that periodically changes the air supply and exhaust

Claims (2)

An air supply unit 10 composed of an air supply diffuser 11 and an air supply fan 12 for supplying air into the room;
An air discharge portion 20 composed of an air discharge diffuser 21 and an air discharge fan 22 for discharging indoor air to the outside;
A supply damper 231 and a discharge damper 232 and first and second air direction switching dampers 233 and 234 for controlling the air flow direction of the air supply unit 10 and the air discharge unit 20, A damper (D) made up of:
An exhaust and supply unit 40 connected to the air supply unit 10 or the air discharge unit 20 by the damper D to supply external air or to discharge internal air;
An exhaust and supply unit 50 connected to the air supply unit 10 or the air discharge unit 20 by the damper D to supply external air or to discharge internal air;
A first heat exchange unit 60 formed between the damper D and the exhaust and supply unit 40 of the first air and connected to the air supply unit 10 or the air discharge unit 20 by a damper D, ;
A second heat exchanging part 70 formed between the damper D and the exhausting and supplying part 50 of the second air and connected to the air supplying part 10 or the air discharging part 20 by the damper D, ;
And a cooling / heating unit (80) disposed between the supply unit (10) and the damper (D)
The air supply damper 231 and the discharge damper 232 of the damper D are opened and the first and second air direction switching dampers 233 and 234 are closed. The air supply and exhaust unit 40 moves in the order of the air supply unit 40, the first heat exchange unit 60, the air supply unit 210 and the air supply damper 231 of the damper D, And the inner air flows in the order of the air discharging portion 20, the discharging damper 232 of the damper D, the second heat exchanging portion 270 and the exhausting and supplying portion 50 of the second air So that the exhaust and supply unit 50 of the second air acts as an exhaust unit,
The supply damper 231 and the discharge damper 232 are closed and the first and second air direction switching dampers 233 and 234 are closed after a certain period of time in the course of air circulation by the operation of the damper D as described above The air is moved to the air discharge unit 20, the second air direction switching damper 234 of the damper D, the first heat exchange unit 60, the first air exhaust unit and the air supply unit 40 So that the exhaust and supply part 40 of the first air acts as an exhaust part and the first air direction switching of the exhaust and supply part 50, the second heat exchanging part 70 and the damper D of the second air, The flow of the air is controlled so that the air moves to the air damper 233 and the air supply unit 10 so that the exhaust and the air supply unit 50 of the second air function as an air supply unit,
The air damper 231 and the discharge damper 232 and the first and second air direction switching dampers 233 and 234 of the damper D are periodically controlled to continuously control the air flow direction, The first and second air exhaust and supply units 40 and 50 periodically function as an exhaust unit and an air supply unit so that air supplied and exhausted is discharged to the first and second heat exchange units 60 and 70 ), Heat exchange can be performed without heat loss, and even when the outside air is low, the air including the heat is periodically transferred to the first and second air exhaust and supply units (40, 50) Which is characterized in that it is constructed so as to prevent frost wave in winter even if it is not provided with a frost prevention facility of the air conditioner of the present invention, and a dual heat exchange type outside air introduction type air conditioner which periodically changes the air outlet.
The cooling / heating unit according to claim 1, wherein the cooling / heating unit is composed of any one selected from a Dx-coil unit or a common coil unit, and a dual heat exchange type Air introduction type air conditioner.

Images