KR100430278B1 - Air Conditioner Applying Heatpipes - Google Patents

Abstract

An energy-saving waste heat recovery air conditioner to which the disclosed heatpipe is applied includes a casing body provided with a ventilation hole, an air supply mechanism, an intake port and an exhaust port, a heat pipe for heat exchange between the ventilation air and the outside air, a compressor for compressing the refrigerant, A direct expansion coil for cooling the air, and an auxiliary heat pipe for heat exchange between the air intake port and the air passing through the exhaust port.

The energy-saving heat recovery air conditioner employing the heat pipe of this structure is an integrated system capable of both cooling and heating, dehumidification and ventilation, so that it is possible to reduce installation space and save costs for air conditioning, The heat efficiency can be increased by regenerating the heat of the exhaust using the pipe and the auxiliary heat pipe.

Description

[0001] Air Conditioner Applying Heatpipes [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an energy saving type heat recovery air conditioner to which a heat pipe is applied, and more particularly to an air conditioner using a heat pipe and an auxiliary heat pipe.

Generally, an air conditioner is a device that filters cold or hot air made in a freezer or a boiler, adjusts humidity, and mixes it at a proper temperature to supply it through a duct.

The air conditioner adjusts a certain space to a suitable temperature, humidity and airflow distribution for humans to act, and at the same time removes dust and the like in the air.

The room temperature is delicate due to the human senses, but the temperature difference between the outside air and the outside air is about 5 ~ 6 ℃, the room temperature is 25 ~ 29 ℃, the humidity is 60 ~ 70% Humidity of about 55 to 70% is appropriate.

The principle of such an air conditioner is the evaporation heat that takes heat away from the surroundings when the liquid evaporates, such as a refrigerator or a refrigerator, and a liquid that is easy to evaporate even at low temperatures is used as the refrigerant.

In the basic structure, the electric motor and the compressor are directly connected to each other in the sealed iron container, and the refrigerant is compressed when the compressor is rotated by the electric motor, and the compressor can be classified into the reciprocating type and the rotary type.

The condenser radiates the heat of the refrigerant into the air to cool and liquefy the liquid. The capillary tube lowers the high-pressure liquid refrigerant coming out of the condenser to evaporate in the next evaporator.

The structure of the evaporator is almost the same as that of the condenser, and the compressed refrigerant evaporates here and the heat is removed from the surroundings, so that the temperature of the air in contact with the surface of the evaporator is lowered and the moisture in the air is removed as water drops on the surface of the evaporator.

The blower system is to send air compulsorily for efficient heat exchange.

There is a centralized type that is used in large buildings, with the main unit in the center, where ducts are used to cool and heat each room, and can be divided into small unit types used in homes or offices.

The conventional air-conditioning and air-conditioning system includes a structure having a refrigerant cycle for cooling and a heater, and an outdoor-side heat exchanger and an indoor-side heat exchanger. The indoor-side heat exchanger is cooled There is known a heat pump type air conditioner which is used as an evaporator at the time of heating and a condenser at the time of heating to release heat to the room.

The structure of the conventional heat pump type air conditioner as shown in Fig. 1 is generally adopted.

Referring to the drawings, the case 10 is formed with a room air supply outlet 11, an indoor air inlet 12, an outdoor outlet 13 and an outdoor suction inlet 14 facing each other, The indoor side air supply outlet 11 and the outdoor side exhaust outlet 13 are partitioned by partition walls 25 and the indoor side air supply outlet 12 and the outdoor side suction opening 14 are partitioned by partition walls 26, .

A heat exchange chamber 20 partitioned by dampers 31 to 38 is formed between the discharge ports 11 and 13 and the suction ports 12 and 14. The heat exchange chamber 20 is horizontally The evaporator 2 is disposed in the upper heat exchange chamber 22 and the condenser 3 is disposed in the lower heat exchange chamber 28. The condenser 3 is disposed in the upper heat exchange chamber 22,

The condensed water generated in the evaporator 2 of the upper heat exchange chamber 22 is dropped to the condenser 3 of the lower heat exchange chamber 23 along the appropriate drain line formed in the partition plate 21. [

In addition, the dampers 31 to 38 are formed in a plurality of blind shapes, and are manually operated.

The operation of the conventional air conditioning and air conditioning unit according to the related art will be described as a cooling mode and a heating mode.

The dampers 31 and 33 formed between the indoor air route and the evaporator 2 and the dampers 36 and 38 formed between the outdoor air route and the condenser 3 are opened and the remaining dampers 32 and 33 are opened, The indoor air cooled through the evaporator 2 flows into the room through the room air outlet port 11 and the heated air from the room flows through the indoor air inlet port 12 to the evaporator 2, Lt; / RTI >

On the other hand, the outside air introduced through the outdoor air intake port 14 absorbs heat while passing through the condenser 3 and is discharged to the outside through the outdoor air discharge port 13 to cool the room.

Next, the heating mode will be described. As opposed to the above-described cooling mode, the damper 32, 34 formed between the indoor air route and the condenser 3, the damper 35, 37 formed between the outdoor air route and the evaporator 2 When the remaining dampers 31, 33, 36, and 38 are closed, the room air heated through the condenser 3 flows into the room through the room air outlet port 11, To the condenser (3).

On the other hand, the cold outside air introduced through the outdoor air intake port 14 is heated while passing through the evaporator 2, and is then discharged through the outdoor air outlet 13 to the outside.

The conventional air conditioner having the above-described configuration is used without much problem in cooling, but when the outside air temperature is lowered to -10 ° C during heating, there is a problem that the heating heat amount is insufficient due to the problem of maintaining the evaporation pressure as cold air in the outside air .

In addition, the use of the electric auxiliary coils for solving the problems has a problem that the electric power consumption cost is increased, and the capacity of the freezer is large, but the ventilation is practically impossible to use in the outdoor air mode.

In addition, since the amount of exhaust air must be large, ducts occupy a large proportion in the air conditioning room, and ventilation of 30% or more can not be performed at a subzero temperature, and noise is generated largely due to an increase in airflow for lowering the condensation temperature And there was a problem that the heating efficiency was deteriorated due to defrosting defrosting due to the temperature below freezing in the winter season.

In addition, since frequent defrosting using hot gas is required, frequent stoppage of equipment causes a problem of wasting electric power and lifetime of equipment, and there is a problem that installation area is increased because two blowers are installed horizontally.

On the other hand, an example of such a cooling / heating air conditioner is disclosed in Korean Patent Publication Nos. 2000-0032459 and 4065938.

First, a heat pump system for both heating and cooling using a thermal regeneration cycle disclosed in Korean Patent Publication No. 2000-0032459 is disclosed in Fig.

Referring to the drawings, there are provided a heat recovery means 44 built in a communication portion between an indoor air duct 40 and an external air duct 42 and circulating between the communication portions, A compressor 47 provided so as to communicate with the evaporator 45 and 46 and a condenser 47 which is connected to the evaporator 45 and 46 through a branch pipe, A plurality of solenoid valves 51 to 56 for opening and closing the branch pipes, expansion valves 60 and 61, and a cooling / heating switching valve 62.

The air conditioner further includes blowers 63 and 64 provided on the discharge side of the indoor air duct 40 and on the discharge side of the external air duct 42, respectively.

However, such an air conditioner has a disadvantage in that the efficiency in cooling and heating is lowered as in the structure described in FIG. 1, and that it has a limitation in recovering heat remaining in the case of discharging outside air or discharging indoor air.

An air conditioner to which a heat pipe disclosed in U.S. Patent No. 4065938 is applied is shown in Fig.

Referring to the drawings, the air conditioner to which the heat pipe is applied includes an internal heat pipe 71, an external heat pipe 72, a compressor 70, a control valve 75, and a pipe (76).

The superheat heat pipe 73 receives the refrigerant from the external heat exchanger 72 in the heating mode and performs heat exchange with the refrigerant entering the compressor 70 by making the superheated steam.

The above-described heat pump type air conditioner only discloses a system for air conditioning having a defrost function, and does not have a structure capable of solving the above problems.

Accordingly, there is a demand for a cooling / heating air conditioner having a new structure capable of solving the above problems.

It is an object of the present invention to provide an integrated type air conditioner having a cooling and heating function and a dehumidifying function.

Another object of the present invention is to regenerate the waste heat of the exhaust gas exhausted by using the auxiliary heat pipe, so that when the outside air temperature falls below zero during the heating, the evaporation pressure must be maintained as the cold air of the outside air, And to provide a cooling / heating air conditioner having a high thermal efficiency.

It is still another object of the present invention to provide an air conditioner capable of sucking outside air and discharging room air without any other energy consumption, thereby ventilating the room air.

1 is a perspective view of a general air conditioner and a conventional air conditioner according to the related art;

2 is a cross-sectional view of a conventional air-conditioning and air-conditioning apparatus disclosed in Korean Patent Laid-Open Publication No. 2000-32459.

3 is a block diagram of a conventional heat pipe applied air conditioner disclosed in U.S. Patent No. 4,065,938.

4A is a sectional view of a heating mode of an energy-saving waste heat recovery air conditioner to which a heat pipe according to the present invention is applied.

FIG. 4B is a sectional view of the air conditioning mode of the air conditioner shown in FIG. 4A. FIG.

4C is a sectional view of the cooling and dehumidifying mode of the air conditioner shown in Fig. 4A. Fig.

5 is a sectional view of another embodiment of a heat pipe applied air conditioner according to the present invention.

Description of the Related Art

100: Casing body 110: Prefilter

120: Heat exchange coil 130: Medium filter

140: blower fan 150: heat pipe

200: ventilation hole 210:

220: inlet port 230: exhaust port

400: Direct expansion coil 410: Discharge fan

420: condensate outlet 430: filter

500: compressor 600,610,620,630,640,650,660: damper

700: auxiliary heat pipe

According to an aspect of the present invention, there is provided an air conditioner for cooling and heating, dehumidifying, and ventilating, comprising: a casing main body provided with a ventilator, an air supply device, an air inlet and an air outlet; a heat pipe for heat exchange between the ventilated air and outside air; A compressor for compressing the refrigerant, a direct expansion coil for evaporating the compressed refrigerant, and an auxiliary heat pipe capable of performing heat exchange between the suction port and the exhaust port.

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

4A, 4B, 4C, and 4D illustrate an air conditioner according to an embodiment of the present invention.

A cooling / heating air conditioner according to the present invention is a system capable of cooling, heating, dehumidifying or ventilating through a single air conditioner. The system includes a casing body provided with a ventilation hole, a gas supply mechanism, an intake port and an exhaust port, and heat exchange between the ventilation air and outside air A compressor for compressing the intake air, a direct expansion coil for cooling the air by evaporating the refrigerant, and an auxiliary heat pipe between the suction port and the compressor.

In addition, the heat pipe includes a vent for discharging indoor air in one direction with respect to the heat pipe, a pre-filter for filtering indoor air entering through the vent, a heat exchange coil for cooling or heating the preheated vent, The air conditioner includes a medium filter for filtering ventilation, an air supply fan for supplying air into the room, and a supply mechanism for supplying ventilation to the room again. In the other direction about the heat pipe, A compressor for compressing the refrigerant, a direct expansion coil for evaporating the compressed refrigerant, and an auxiliary heat pipe between the suction port and the compressor.

Other detailed structures will be described below by describing the operation for each mode.

FIG. 4A shows a heating mode for heating when a room requires a heating load.

The ventilation air R / A, which is introduced through the ventilation opening 200, passes through the pre-filter 110, passes through the heat exchange coil 120 installed at the front end of the heat pipe 150, After passing through the medium filter 130, the air is supplied to the air supply mechanism 210.

That is, in the ventilation air, the heat exchanging coil 120 functions as a condenser coil, thereby depriving the refrigerant of condensation heat, thereby raising the temperature, passing through the air supply mechanism 210 by the air blowing fan 140, Thereby increasing the temperature of the room air.

At this time, the dampers (600, 610) in front of the heat pipe (150) are closed to guide the flow of the ventilation air to the heat exchange coil (120).

The fresh outside air O / A flows into the casing body 100 through the inlet port 220 as the damper 650 formed in front of the inlet port 220 of the outside air is opened.

The introduced air from the outside directly sucks heat from the process of evaporating the refrigerant in the expansion coil 400 and the damper 640 installed in front of the exhaust port 230 is opened and exhausted to the outside through the exhaust port 230.

On the other hand, when the heating load of the winter is generated, the temperature of the outside air must be high in order for the direct expansion coil 400 to exchange heat with the outside air to lose heat, and the outside air temperature in winter becomes a subzero temperature. Do.

As a means for solving the above problem, the conventional system in which the temperature of the outside air passing through the intake port 220 is heated by the electric heater or the auxiliary heat source is increased, but the intake port 220 and the compressor 500 And an auxiliary heat pipe 700 located between the exhaust port 230 and the exhaust fan 410 are installed.

The heat exchange using the auxiliary heat pipe 700 is enabled by the temperature difference between the exhaust gas E / A passing through the exhaust port 230 and the external air O / A flowing through the intake port 220, .

That is, the introduced outside air passes through the high temperature part of the auxiliary heat pipe 700 and is preheated through heat exchange with the waste heat of the exhaust. After the heat is exchanged through the direct expansion coil 400, the air of the auxiliary heat pipe 700 Passes through the low temperature section, and is exhausted by the exhaust fan (410) through the exhaust port (230).

As a result, the heat from the outside is preheated through the auxiliary heat pipe to increase the heat exchange efficiency with the refrigerant evaporating from the direct expansion coil, and the required heat of the direct expansion coil 400 is acquired by the outside air And it is possible to cover the required heat amount of the heat exchange coil 120, thereby increasing the overall energy efficiency.

FIG. 4B shows an outdoor air cooling mode when outdoor air in winter is low and a cooling load is required in the room.

A damper 650 installed outside the fresh outside air O / A from the outside is opened and external air is directly supplied to the room through the inlet port 220. The outside air Is supplied to the room.

Meanwhile, the ventilation air (R / A) is exhausted to the outside by the exhaust fan 410 after passing through the pre-filter 110, so that when fresh outside air is required in the case of indoor pollution, .

That is, outside air can be introduced from the intake port 220 to cool the room through the air supply device 210 without consuming power, and the air in the room can be ventilated through circulation with the outside air.

4C shows a cooling and dehumidifying mode when a cooling and dehumidifying load is required in a room.

When a cooling and dehumidifying load is generated in summer, the ventilation air that has entered the casing main body 100 through the ventilation opening 200 passes through the prefilter 110 and then is subjected to primary precooling in contact with the lower end portion of the heat pipe 150 The air is directly dehumidified by the expansion coil 400 and then supplied to the room through the air supply mechanism 210 by the air blowing fan 140.

On the other hand, the outside air passes through the inlet port 220 and is supplied into the casing main body 100, passes through the high-temperature portion of the heat pipe 150, rises to a temperature suitable for the room temperature, And supplied to the room.

That is, since the heat exchange coil 120 is a heat pump system that becomes a condenser coil at the time of heating and can be directly converted into an expansion coil at the time of cooling, the condenser coil at the time of heating turns into a direct expansion coil at the time of cooling, And then supplied to the room through the air supply mechanism 210 via the medium filter 130.

With the above-described configuration, since the ventilation air is precooled through the heat exchange in the heat pipe 150, the capacity of the direct expansion coil 400 serving as the evaporator is reduced, thereby achieving the effect of material cost and energy saving.

As described above, the air conditioner of the present invention provides the following effects.

First, since it is an integrated type air conditioner capable of selecting the function of cooling, heating and dehumidification according to need, space for installation can be reduced and cost for air conditioning can be saved.

Second, it is an object of the present invention to provide an energy-saving heat recovery air conditioner in which a heat pipe having a high thermal efficiency is applied by regenerating waste heat of exhaust air discharged using an auxiliary heat pipe.

Third, the indoor air can be ventilated by sucking the outside air and discharging the indoor air without consuming any other energy, thus providing a pleasant indoor environment.

Fourth, the heating capacity becomes large, the ventilation of the entire outside air system becomes possible, the noise is small, and the ventilation can be smoothly performed even in the cold winter weather.

It is to be understood that the invention is not limited by what has been described above and illustrated in the drawings, but many modifications and variations are possible within the scope of the following claims.

Claims (4)

In an air conditioner to which a heat pipe is applied, A casing main body provided with a ventilating opening, an air supply opening, an air intake opening and an air exhaust opening; An exhaust fan for exhausting the ventilation air to the outside of the casing main body through the exhaust port; A heat pipe for heat exchange between the ventilation air and the outside air; A compressor for compressing the refrigerant; A direct expansion coil for cooling the air; And an auxiliary heat pipe for heat exchange between the air passing through the air inlet and the air passing through the air outlet. The method according to claim 1, A heat exchanger coil for cooling or heating the preheated ventilation; a heat exchanger for filtering indoor air entering the ventilator through a medium filter for filtering ventilation; An air supply fan for supplying air to the room, and a supply unit for supplying air to the room again; An air inlet for introducing outside air into the casing main body, a compressor for compressing the refrigerant, a direct expansion coil for cooling the air, and an auxiliary heat exchanger for heat exchange between the air inlet and the air outlet, Wherein the heat pipe comprises a heat pipe. 3. The method according to claim 1 or 2, Further comprising a plurality of dampers installed to adjust the direction of the air flow inside the casing body according to cooling / heating, dehumidification, and ventilation modes. The method according to claim 1, Wherein the auxiliary heat pipe is installed between the exhaust fan and the exhaust port and between the intake port and the compressor.