KR100479801B1 - Air Cooling/Heating System and Air Conditioner - Google Patents

Abstract

According to the present invention, by heating a hot radiator flowing a hot radiator and a cold radiator flowing a low temperature refrigerant, and installing a fan around the radiator, the heated outside air around the on radiator is The present invention relates to a heat pump type air conditioner / heating device which allows high heating efficiency even when the ambient temperature is extremely low by passing through the surface of the cold radiator by suction or blowing.

In the heat pump type cooling / heating device of the present invention as described above, in the cooling / heating device having a liquid separator / compressor / heat exchanger / condensation part / expansion valve, the condensation part is an on-radiator and a cooling radiator. It is characterized in that the fan is further installed in the condensation unit is separated / separated into two parts of the fan to allow the outside air flows from the on-radiator side to the cold radiator side.

In addition, the air conditioner of the present invention, by supplying the circulating water discharged from the heat exchanger of the heat pump type air conditioner / heater described above as a working fluid to the indoor unit of the normal structure to perform the cooling / heating of the room by the working fluid. It features.

Description

Heat pump type cooling / heating device for improving heating efficiency and air conditioner including the heat pump type cooling / heating device {Air Cooling / Heating System and Air Conditioner}

The present invention divides the condensation unit of a cooling / heating unit into two parts of an on-radiator through which a high-temperature refrigerant flows and a cold radiator through which a low-temperature refrigerant flows, and then the on-radiator and the cold-radiator are adjacent to each other. By arranging and installing air flow means such as a suction fan or a blowing fan in the vicinity thereof, the heating air around the radiator is cold radiator. It relates to a heat pump cooling / heating device that can heat the surface of the heat pump can exhibit excellent heating efficiency even in winter.

In general, it is common knowledge that heat is transferred from the high temperature zone to the low temperature zone, but when external work (W) or energy is applied to the system, heat is pumped from the low temperature zone to the high temperature zone so that the low temperature zone becomes colder and high temperature. The region can be hotter.

It is a heat pump type cooling / heating device that performs cooling / heating indoors by using the heat pumping phenomenon, and in general, includes components such as a compressor / condenser / expansion valve, and each component is connected to a refrigerant circulation pipe. have.

Examples of the above-described heat pump type cooling / heating device have been filed in Korea with hundreds of patents, including those disclosed in Korean Patent Publication No. 2001-88744.

However, in the conventional heat pump type cooling / heating device, since both the high-temperature refrigerant and the low-temperature refrigerant are condensed in one condenser installed outdoors, heating is performed while the temperature of the outside air is lowered to below 5 ° C. When operating, the condenser is frozen due to the cooling of the low temperature refrigerant introduced into the condenser, or the compression ratio is low.

On the other hand, a case in which the heating efficiency is not lowered even when the external temperature is lowered to below zero using two condensers has been disclosed in Utility Model Registration No. 281266.

However, the heat pump type cooling / heating device described in this publication is a configuration in which two cooling / heating devices are connected in parallel so that an expansion valve and a compressor (compressor) can be used in common. Still, there is a serious change in the heating efficiency according to the external temperature, and in particular, the increase in the cooling / heating efficiency is not so high as the device configuration is more complicated and its scale is larger than before.

The present invention is formed by separating the condensation unit of the conventional heat pump type cooling / heating apparatus into a hot radiator in which a high temperature refrigerant flows and a cold radiator in which a low temperature refrigerant flows, but arranged so that two radiators are adjacent to each other. By installing an external air flow means such as a suction fan or a blower fan in the air, when the ambient temperature falls below the set temperature, the external air flow means operates so that the warm outside air around the radiator is heated while passing through the surface of the cold radiator. It is an object of the present invention to provide a heat pump type cooling / heating device.

In addition, the present invention by replacing the fluorine compound, such as CFC used as a working fluid in the indoor unit of the air conditioner with hot or cold circulating water produced in the heat pump type cooling / heating device, thereby improving the comfort of cooling / heating The purpose is to provide an improved air conditioner.

Heat pump type cooling / heating device of the present invention for achieving the above technical problem, the condensation unit is divided into two radiators, each adjacent / installed, characterized in that the air flow means is installed around the additional.

Here, the heat pump type cooling / heating device of the present invention is a liquid separator / compressor / heat exchanger / As well as including conventional basic components such as expansion valves, other conventional components that are not mentioned may be included as necessary.

a) Among the components, the ACCUMULATOR separates the refrigerant in the gas-liquid mixed phase into a liquid refrigerant and a gaseous refrigerant, and stores the liquid refrigerant and the gaseous refrigerant is the following compressor (compressor). To the side.

Here, the liquid refrigerant flowing into the liquid separator is often mixed with oil, which may be first separated from the known oil separator and discharged to the compressor, but when the suction tube having an oil return hole is installed in the liquid separator, It can also be discharged to the compressor.

b) Among the components, the compressor receives the low-temperature low-pressure gaseous refrigerant discharged from the liquid separator, compresses the high-temperature-high pressure liquid refrigerant, and imparts a circulation force to the refrigerant.

As the compressor, ① reciprocating type ② rotary type ③ scroll type can be used.

c) The heat exchanger may be manufactured by passing a capillary tube through which a refrigerant flows through the water jacket in which the inlet / drainer is formed in a watertight state.

The inlet and the outlet of the conventional air conditioner indoor unit for the cooling / heating capillary or the heating tube laid on the indoor floor can be piped in a watertight state to the inlet / drain.

In addition, the pump may be additionally installed in the circulating water piping line consisting of a water jacket and a heating tube so that the circulating water provided to the indoor cooling / heating continues to circulate smoothly.

Therefore, the high temperature refrigerant at a relatively high temperature relative to the capillary tube of the heat exchanger When the flow rate is high, the temperature of the circulating water in contact with the capillary tube is increased, and heating is performed in the room. On the contrary, when the low temperature refrigerant flows in the capillary tube, the temperature of the circulating water is reduced and cooling is performed indoors. It becomes.

d) The condensing part among the components is the most characteristic component that distinguishes the heat pump type cooling / heating apparatus of the present invention from the prior art, and is installed adjacent to each other on the radiator and the cooling radiator and its surroundings. External flow means.

The high temperature refrigerant at a relatively high temperature is introduced into the on-radiator, and the low temperature refrigerant at a relatively low temperature is introduced during the cooling operation.

On the other hand, the relatively high temperature hot refrigerant discharged from the on radiator flows into the cold radiator only during the heating operation.

In addition, a suction fan or a blower fan having a conventional structure may be employed as the external air flow means, and by the operation of the external air flow means, the heated air around the on-radiator flows toward the cold radiator to cool the air. V) The surface of the radiator is heated to a significant level.

Therefore, even when the outside air temperature drops below zero, the cold radiator does not freeze, and the heating efficiency is improved by increasing the compression ratio in the compressor during heating operation.

e) The expansion valve among the components is a device for phase-changing a low-temperature liquid refrigerant from an on-radiator into a low-temperature gas phase refrigerant, and has the same structure and operation as those used in a conventional heat pump type cooling / heating apparatus. .

Hereinafter, the configuration and operation of the heat pump type cooling / heating apparatus according to a preferred embodiment of the present invention will be described based on the accompanying drawings.

Here, the technical idea of the present invention should not be construed as being limited to the claims and the drawings, but should be construed as including modifications that are obvious or easy to those skilled in the art.

Preferred Embodiment

1 is a schematic block diagram showing a preferred embodiment of the present invention, the solid line indicates a pipe through which the refrigerant is circulated during the heating operation, and the dotted line indicates a pipe through which the refrigerant is circulated during the cooling operation. Therefore, the part in which both the solid line and the dotted line are shown represents the pipe which can be used commonly.

As shown in the figure, the heat pump type cooling / heating apparatus of the present invention, as in the prior art, between the compressor 100 / heat exchanger 200 / condensation / expansion valve 500 / liquid separator 600 and the components Consists of a pipe connected, in particular, the condensation unit is composed of an on-radiator 300, a cold radiator 400 and a fan 700.

In addition, some of the pipes are provided with solenoid valves (V1 to V6, SV) and check valves (CV1 and CV2), respectively. To prevent backflow.

In addition, the pipe connecting the on-radiator 300 and the expansion valve 500 of the present invention, starting from a point close to the on-radiator in order to receive the receiver 810, dryer 820, glass tube ( 830), the solenoid valve (SV) is installed at appropriate intervals In this embodiment, the same components as those used in the conventional cooling / heating apparatus were used as these components.

On the other hand, the heat pump type cooling / heating device of the present embodiment is to increase the temperature of the circulating water through the following process and the elevated circulating water is provided to the indoor unit to perform the indoor heating.

First, the high temperature refrigerant compressed at high temperature and high pressure in the compressor 100 flows toward the heat exchanger 200 through a pipe between the compressor and the heat exchanger 200. At this time, the valve V1 provided in the pipe between the compressor and the heat exchanger is opened, and the valve V4 provided in the pipe between the compressor and the on radiator 300 is closed. Therefore, all the hot refrigerant discharged from the compressor flows toward the heat exchanger.

The high temperature refrigerant flowing toward the heat exchanger 200 is discharged to the on-radiator 300 in a state of being cooled by heat exchange with the circulating water of the indoor unit passing through the heat exchanger, and at this time, the heat exchange with the high temperature refrigerant in the heat exchanger. The circulating water heated to flow into the in-let of the indoor unit by circulating pumping of a circulation pump (not shown) to perform indoor heating, and then flow back into the heat exchanger 200 through the outlet of the indoor unit.

On the other hand, the high temperature refrigerant discharged from the heat exchanger 200 in a reduced temperature flows toward the on radiator through the valve V2 / check valve CV1 provided in the pipe between the heat exchanger and the on radiator. Holding

The high temperature refrigerant flowing into the on radiator supports the inside of the on radiator. During the flight, the air is exchanged with the cold air to further reduce the temperature, and flows toward the expansion valve 500 through the receiver 810 → dryer 820 → glass tube 830 → valve SV.

Here, the dryer 820 absorbs / removes moisture contained in the refrigerant to prevent the refrigerant from freezing and blocking when passing through the expansion valve, and the glass tube 830 may visually check the state of the refrigerant flowing along the pipe. The valve SV prevents the refrigerant from flowing back.

Through the above process, the refrigerant introduced into the expansion valve 500 is converted into a refrigerant having a low temperature and low pressure by the throttling action of the expansion valve, and then passes through the cold radiator 400 and the liquid separator 600 to the compressor 100. It is introduced again. At this time, the valve V3 provided in the pipe between the cold radiator 400 and the liquid separator 600 is opened.

On the other hand, when the outside air temperature drops below 5 degrees Celsius, the refrigerant passing through the cold radiator 400 is supercooled and is not compressed properly in the compressor, and as a result, the heating efficiency is significantly deteriorated.

At this time, when the outdoor air flow means 700 is operated, the heating air around the radiator 300 is blown toward the cold radiator 400 so that the (outer) surface of the cold radiator 400 is Heated. Accordingly, the temperature of the refrigerant passing through the cold radiator 400 is increased to allow a larger amount of the refrigerant to phase change into gaseous refrigerant, which in turn increases the compression ratio in the compressor, thereby improving heating efficiency.

That is, in the conventional heat pump type air conditioner / heater, the low temperature refrigerant passing through the expansion valve condenses to a lower temperature while passing through one condenser (or radiator), Because of the re-introduction, the compression ratio in the compressor was very low and the heating efficiency was remarkably bad. However, in this embodiment, one radiator is installed after the expansion transformer and after the expansion transformer, so that when the outside temperature is extremely low, the radiator is relatively high. By heating the radiator at a lower temperature to heat the radiator, the compression ratio in the compressor is increased to improve the heating efficiency.

Hereinafter, a cooling process of the heat pump type cooling / heating apparatus according to the present embodiment will be described with reference to the drawings.

First, the high temperature refrigerant discharged from the compressor 100 flows into the on radiator 300 through the valve V4. At this time, the valve V1 provided in the pipe between the compressor and the heat exchanger is closed.

The high temperature refrigerant introduced into the on radiator 300 passes through the inside of the on radiator and exchanges with the outside air at a relatively low temperature to decrease the temperature. The receiver 810 → the dryer 820. → It flows out toward the expansion valve 500 via the glass tube 830 → valve SV.

The high temperature refrigerant in the temperature-sensitive state flowing into the expansion valve is expanded here to become a low temperature refrigerant, and flows out toward the heat exchanger 200 via the valve V5 and the check valve CV2.

The low temperature refrigerant introduced into the heat exchanger 200 is elevated in temperature by heat exchange with circulating water and is discharged toward the liquid separator 600 through the valve V6.

Thereafter, the gaseous refrigerant discharged from the liquid separator is discharged again toward the compressor 100 to repeat the above process.

On the other hand, the low-temperature circulating water heat exchanged with the low temperature refrigerant in the heat exchanger is provided to the indoor unit to perform the cooling.

As described above, the heat pump type cooling / heating apparatus of the present invention, which is mainly installed outdoors, installs an on-radiator and a cold radiator after the expansion transformer and the two radiators are adjacent to each other. If the heating efficiency is lowered by the ambient temperature of the cooling / heating device is lower than the set temperature (for example, minus 5 degrees) by installing an external air flow means in the vicinity of the air flow means to operate the external air flow means The surface of a cold radiator can be heated by the warm outside air around an on radiator.

Therefore, the compression ratio of the refrigerant flowing back into the compressor through the cold radiator can be increased, and thus, the heating efficiency can be improved.

In addition, when the high temperature / low temperature circulating water generated in the heat exchanger of the present invention is provided to an indoor unit for an air conditioner having a conventional structure, cooling / heating of the room is performed more efficiently without using a fluorine compound such as CFC. can do.

1 is a schematic configuration diagram of a heat pump type cooling / heating apparatus according to a preferred embodiment of the present invention.

[Description of Drawing Reference]

100 compressors, 200 heat exchangers,

300 ... on radiator, 400 ... radiator

500 ... expansion valve, 600 ... liquid separator.

Claims (4)

In a cooling / heating device having a liquid separator, a compressor, a heat exchanger, a condenser and an expansion valve, The condensation unit An on-radiator in which a high temperature refrigerant at a relatively high temperature is introduced during the heating operation and a low temperature refrigerant at a relatively low temperature is introduced during the cooling operation; A cold radiator into which a relatively high temperature hot refrigerant discharged from the on radiator flows only during a heating operation; External air flow means for flowing external air from the on radiator to the cold radiator; Heat pump type cooling / heating device that improves the heating efficiency, including. The method of claim 1, The heat pump type cooling / heating device Heat pump with improved heating efficiency, characterized in that the high temperature refrigerant at a relatively high temperature is piped in the order of compressor → heat exchanger → hot radiator → expansion valve → cold radiator → liquid separator → compressor. Air conditioning / heating system. The method of claim 1, The heat pump type cooling / heating device During the cooling operation, the heat pump type cooling / heating device with improved heating efficiency, characterized in that the low temperature refrigerant of relatively low temperature is piped in the order of the compressor → on-radiator → expansion valve → heat exchanger → liquid separator → compressor. . The cooling and heating of the room is performed by supplying the circulating water discharged from the heat exchanger of the heat pump type cooling / heating device according to any one of claims 1 to 3 to the indoor unit for air conditioning of a general structure as a working fluid. Air conditioner characterized by.