KR101444372B1 - Heat exchanger system of cooling and heating - Google Patents

Abstract

A heat exchanging system for cooling and heating according to an embodiment of the present invention includes a compressor for converting a heat carrier to high-pressure heat carrier to output it; a condenser connected to the compressor to convert a gaseous heat carrier to a liquefied heat carrier; a cooler for cooling the heat generated from the liquefied heat carrier passing the condenser by use of a fluid; a coaxial cooling pipe formed as a coaxial double-pipe having an inner pipe and an outer pipe, so that the liquefied heat carrier outputted from the cooler passes the inner or outer pipe to again cool the liquefied heat carrier; an expansion pipe connected to the inner or outer pipe of the coaxial cooling pipe to convert the high-pressure liquefied heat carrier to a low-pressure liquefied heat carrier; and an evaporator for converting the low-pressure liquefied heat carrier passing the expansion pipe to the low-pressure gaseous heat carrier. The low-pressure gaseous heat carrier outputted from the evaporator passes the cooler, and is fed to the compressor through the outer or inner pipe of the coaxial cooling pipe which is different from the pipe connected to the expansion pipe.

Description

HEAT EXCHANGER SYSTEM OF COOLING AND HEATING

The present invention relates to a cooling / heating heat exchange system, and more particularly to a water-cooling type heat /

Generally, the cooling / heating system is composed of a refrigerant cycle in which a cooling operation and a heating operation are performed in a single air conditioner, and the compressor, the condenser, the expansion valve, and the evaporator are mainly used.

The methods used in heating and cooling systems are divided into air cooling and water cooling. The air-cooled type uses air to lower the temperature of the refrigerant passing through the condenser by heating, and the water-cooled type uses a fluid such as water to lower the temperature.

Referring to FIG. 6, a general air-cooled heating system will be described.

6 is a schematic view of a general air-cooled heating system.

As shown in FIG. 6, the gas-phase refrigerant compressed in the high-temperature and high-pressure state in the compressor is converted into the liquid-phase refrigerant in the high-temperature and high-pressure state while passing through the condenser. The refrigerant transforms from the gas phase to the liquid phase, dissipates heat to the outside, and uses the external blowing fan to circulate the heated ambient air into the room to heat it. The liquid refrigerant in the liquid state is converted into the gaseous refrigerant while passing through the evaporator, and the refrigerant in the liquid state is absorbed by the surrounding heat, And cooled. The blower fan installed adjacent to the evaporator circulates the surrounding air to cause heat exchange.

In the air-cooled heating system, a refrigerant whose temperature is considerably lowered through a capillary tube or an electromagnetic valve used as an expansion tube is provided as an evaporator. In the evaporator, evaporation occurs in which the refrigerant is cooled down to -40 ° C to be converted into gas, Lt; / RTI > Since the temperature of the refrigerant passing through the evaporator is low, when the temperature falls below zero, sexual intercourse occurs on the surface of the condenser installed outdoors in the winter, and heat exchange is not smoothly performed, which greatly affects the circulation cycle. In order to eliminate such malaise, the defrosting operation must be performed by circulating the refrigerant cycle in the reverse direction or by spraying the hot gas in the same manner as in the cooling operation, despite the heating operation.

Such a defrosting operation is disadvantageous in that it is not only large in energy consumption, but also can not provide sufficient heating to the room during defrosting operation.

Also, in the case of a water-cooling type air conditioning system in which a fluid is periodically supplied and heat exchange is performed, instead of performing heat exchange through ambient air using a blowing fan as in an air cooling type, there is a problem that the fluid freezes at a low temperature, The heating system may not be operational or may fail. Also, energy is consumed to circulate the fluid, which is also inefficient.

Particularly, the compressor is affected by the temperature and condition of the refrigerant, and when the temperature of the refrigerant is not well exchanged with the outside, the load is increased and serious damage occurs or the operation is stopped.

In addition, according to the generally used cooling and heating system, the heat generated in the condenser is directly discharged to the outside during the cooling, and the cool air generated in the evaporator is discharged to the outside at the time of heating, .

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cooling / heating heat exchange system utilizing heat generated in an evaporator and a condenser, and to provide a system in which a separate fan for exchanging heat with outside air is not required . And to reduce the load of the compressor so that a stable system can be realized.

The cooling / heating heat exchange system according to an embodiment of the present invention includes a compressor for converting an incoming heat medium into a high-temperature and high-pressure heat medium and discharging the heat medium, a condenser for converting the gas phase heat medium into a liquid phase heat medium, A coaxial cooling tube which is formed as a coaxial double tube including an inner tube and an outer tube for allowing the heat medium flowing out of the cooler to pass through the inner tube or outer tube to cool the heat medium in the liquid phase again, An expansion tube connected to any one of an inner tube or a coaxial cooling tube outer tube for converting a high-pressure liquid-phase heat-transfer medium into a low-pressure liquid-phase heat medium, and an evaporator for converting the low-pressure liquid-phase heat medium passing through the expansion pipe into a low- , The low pressure gaseous phase heating medium flowing out through the evaporator is cooled Passes through the other of the outer tube of the coaxial cooling tube and the inner tube of the coaxial cooling tube and flows into the compressor.

Here, the cooler may be a water tank containing a fluid for heat exchange.

Here, the condenser and the evaporator may be installed so as to be immersed in the fluid contained in the cooler.

Here, the coaxial cooling tube can cause heat exchange to occur between the low-temperature, low-pressure gas-phase heat medium circulating through the outer surface of the coaxial cooling tube that surrounds the high-temperature, high-pressure liquid-phase heating medium circulating through the coaxial cooling- .

Further, the inner tube of the coaxial cooling tube may further include a spacer formed on the outer peripheral surface of the inner tube of the coaxial cooling tube.

The cooling / heating heat exchange system according to the embodiment of the present invention may include a cap connected to one side of the coaxial cooling tube and guiding the heating medium flowing out of the coaxial cooling tube inner tube and the outer tube of the coaxial cooling tube to move through different circulation paths.

Here, the cap may further include a through hole through which the heat medium flowing out of the outer tube passes.

The cooling / heating heat exchange system according to an embodiment of the present invention may further include a hot water supply unit formed between the compressor and the condenser and heating the water using a high-temperature and high-pressure heating medium.

Here, the heating medium may include at least one of ammonia, freon, and methyl chloride.

The cooling / heating heat exchange system according to the embodiment of the present invention can reduce the load generated in the compressor, can build a stable system, does not need to install a separate fan, generates no noise, and has no unnecessary heat source The efficiency of the system increases.

1 is a schematic block diagram of an air-conditioning heat exchange system according to an embodiment of the present invention.
2 is an exploded view of the coaxial cooling tube.
3 is a perspective view of a cap attached to one side of the coaxial cooling tube.
4 is an operational state diagram of the cooling / heating heat exchange system according to the embodiment of the present invention.
5 is a schematic system block diagram of a cooling / heating heat exchange system including a hot water supply device.
6 is a schematic view of a general air-cooled heating system.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and particular embodiments are illustrated in the drawings and described in detail in the detailed description. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention. In describing the present invention, Detailed explanations of the detailed description will be omitted if it is determined that the gist of the present invention may be blurred.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the scope of the present invention is not limited or limited by the following embodiments.

1 is a schematic block diagram of an air-conditioning heat exchange system according to an embodiment of the present invention.

As shown in FIG. 1, the cooling / heating heat exchange system according to an embodiment of the present invention includes a compressor 100 for converting an incoming heat medium into a high temperature and high-pressure heat medium and discharging the heat medium, A cooler 300 for cooling the heat generated in the liquid phase heat medium having passed through the condenser 200 by using a fluid, a coaxial double tube including an inner tube and an outer tube, A coaxial cooling pipe 400 for passing the liquid phase heat medium through the inner pipe or the outer pipe to cool the liquid phase heat medium again, and a coaxial cooling pipe 400 connected to one of the coaxial cooling pipe inner pipe 410 and the coaxial cooling pipe outer pipe 420, And an evaporator 600 for converting the low-pressure liquid-phase heat medium, which has passed through the expansion pipe 500, into a low-pressure gas phase heat medium, The low pressure gas phase heating medium flowing out through the evaporator 600 passes through the cooler 300 and passes through the other of the coaxial cooling tube outer tube 420 and the coaxial cooling tube inner tube 410 and flows into the compressor 100 ≪ / RTI >

The compressor 100 collides the incoming heating medium with each other to convert the low temperature and low pressure gas heating medium into a high temperature and high pressure gas heating medium. The output of the compressor 100 varies greatly depending on the place and the area where the cooling / heating heat exchange system is installed. The heating medium passing through the compressor 100 becomes a heating medium at a high temperature of 70 to 100 ° C and is supplied to the condenser 200.

Since the compressor 100 is not compressed by the refrigerant in the liquid state, the refrigerant must be supplied in the gaseous state. If the liquid refrigerant is supplied to the compressor 100, the compressor 100 is seriously damaged.

The condenser 200 is connected to the compressor 100 via a heating medium pipe, and converts the gas phase heating medium flowing from the compressor 100 into a heating medium. The condenser 200 is a device for condensing and liquefying the vapor by cooling. The condenser 200 is divided into a surface condenser, in which the gaseous heat medium and the cooling medium indirectly contact each other, and a contact condenser in direct contact therewith. The condenser 200 in the embodiment of the present invention may be a surface condenser in which the heat medium pipe passing through the compressor 100 indirectly comes into contact with the cooling medium to cause heat exchange. The heat medium that has passed through the condenser 200 is converted from the gas phase heat medium to the liquid phase heat medium. The condensation heat generated in this process is diverted to the outside of the condenser 200.

The cooler 300 is a water-cooled cooler for cooling the heat generated in the liquid phase heat medium having passed through the condenser 200 by using a fluid. The fluid may comprise water. Water has 15 times higher thermal conductivity than air. Using this water characteristic, a more smooth heat exchange can occur in the water-cooled cooler. The cooler 300 may be a water tank containing such fluid, and the fluid inside the cooler 300 does not flow and is carried with a certain amount of flow.

A condenser (200) and an evaporator (600) are installed in a cooler (300) containing a fluid. The condenser 200 is preferably disposed below the cooler 300 and the evaporator 300 to be described later is installed at an upper portion of the cooler 300 so that heat exchange can be performed using the convection phenomenon, 600 may be located. Further, the condenser 200 and the evaporator 600 are installed to be submerged by the fluid contained in the cooler 300.

The coaxial cooling pipe 400 is a coaxial double pipe including a coaxial cooling pipe inner pipe 410 and a coaxial cooling pipe outer pipe 420 as a coaxial cooling pipe inner pipe 410 or coaxial cooling pipe outer pipe 420, And then passed through the cooling pipe outer pipe 420 to cool the liquid phase heating medium again. The low-temperature, low-pressure gas-phase heat medium flowing out through the evaporator 600 is passed through the outer tube 420 of the coaxial cooling tube or the inner tube 410 of the coaxial cooling tube, which is different from the tube through which the high-temperature and high-

2 is an exploded view of the coaxial cooling tube.

3 is a perspective view of a cap attached to one side of the coaxial cooling tube.

Referring to FIG. 2, the coaxial cooling pipe 400 includes a coaxial cooling pipe inner pipe 410 and a coaxial cooling pipe outer pipe 420 as described above, and has a coaxial cylindrical pipe shape. A spacer 412 is formed on the outer circumferential surface of the inner pipe 410 of the coaxial cooling pipe 410 and the inner pipe 410 of the coaxial cooling pipe 410 is formed by the spacer 412. [ And the outer tube 420 of the coaxial cooling tube can be fixedly installed coaxially.

The spacer 412 can be implemented in various shapes and can be a heat exchange path between the heat sources passing through the coaxial cooling tube 400. The spacer 412 may be provided symmetrically with the outer surface of the coaxial cooling pipe inner tube 410. The diameter of the coaxial cooling pipe inner pipe 410 including the spacer 412 may be larger than the diameter of the inner peripheral surface of the coaxial cooling pipe outer pipe 420 . In addition, a thread may be formed on the outer circumferential surface of the outer tube 420 of the coaxial cooling tube 400 and may be screwed to the cap 414 shown in FIG. 3 by a screw thread.

The coaxial cooling pipe inner pipe 410 may be connected to the expansion pipe 500 and the outer pipe 420 of the coaxial cooling pipe may be connected to the expansion pipe 500 to connect the expansion pipe 500 and the expansion pipe 500. In this case, So that the liquid phase heating medium can be introduced into the expansion pipe 500. When the inner tube 410 of the coaxial cooling tube is connected to the expansion tube 500, the outer tube 420 of the coaxial cooling tube is connected to the compressor 100 and the low-temperature and low-pressure gas phase heating medium is passed. Conversely, when the outer tube 420 of the coaxial cooling tube is connected to the expansion tube 500, the inner tube 410 of the coaxial cooling tube is connected to the compressor 100 and the low-temperature and low-pressure gas phase heating medium is passed.

The cooling / heating heat exchange system according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. For convenience of explanation, the coaxial cooling pipe inner pipe 410 is connected to the expansion pipe 500 to allow the high- The low-temperature, low-pressure gas-phase heat medium is connected to the compressor 100, but the present invention is not limited thereto.

A cap 414 is attached to one side of the coaxial cooling tube 400 as shown in FIG.

The cap 414 induces the heat medium moving through the coaxial cooling pipe inner pipe 410 and the coaxial cooling pipe outer pipe 420 to move to different circulation paths without being mixed with each other. A through hole 416 is formed in the cap 414 so that the heating medium passing through the outer tube 420 of the coaxial cooling tube passes through the through hole 416 through the connection passage located in the lower part of the drawing of FIG. Navigate to the path. The transmission holes 416 may be plural. The heating medium passing through the coaxial cooling pipe inner pipe 410 moves in different circulation paths through the connection passages formed at the central portion of the cap 414. [

The expansion pipe 500 is connected to the coaxial cooling pipe inner pipe 410 to convert the high-pressure liquid-phase heat medium into a low-pressure liquid-phase heat medium. The expansion pipe 500 decompresses the high-temperature and high-pressure liquid heating medium condensed and condensed in the condenser 200 to a pressure capable of causing evaporation by the throttling action. Also, the expansion pipe 500 can supply an appropriate amount of heat medium to the evaporator 600 so as to be capable of absorbing sufficient heat. The expansion tube 500 may be of an electromagnetic type, a sensible type, a static pressure type, a flow control type, an orifice type, a temperature type, and a capillary type, and the expansion tube 500 of the present invention may be capillary type, .

The evaporator 600 converts the low-pressure liquid-phase heat medium that has passed through the expansion pipe 500 into a low-pressure gas phase heat medium. That is, the low-temperature, low-pressure decompressed liquid-phase heat medium that has passed through the expansion pipe 500 is introduced and heat-exchanged with the surrounding space or the object to be cooled, thereby causing heat absorption by liquid evaporation. The evaporator 600 may be a zigzag pipe having a plurality of curved shapes, and may be a pipe having the same material as the heat medium pipe.

1 to 3, the configuration of the cooling / heating heat exchange system according to the embodiment of the present invention has been described.

Hereinafter, the heat exchange mechanism of the cooling / heating heat exchange system according to the present invention will be described with reference to FIG.

4 is an operational state diagram of the cooling / heating heat exchange system according to the embodiment of the present invention.

Each of the components included in the above-described cooling / heating heat exchange system is connected by a heating medium pipe. A heating medium having a high temperature and a high pressure moves inside the heating medium pipe indicated by an oblique line shown in FIG. 4, A low-temperature low-pressure heat medium is moving inside the pipe.

The low-temperature low-pressure heating medium flowing into the compressor (100) passes through the compressor (100) and changes into a gaseous high-temperature and high-pressure heating medium. The gaseous high-temperature, high-pressure heating medium having passed through the compressor 100 moves to the condenser 200 located below the cooler 300 containing the fluid. The condenser 200 converts the gaseous high-temperature high-pressure heating medium into a liquid high-temperature high-pressure heating medium, and moves to the coaxial cooling pipe inner pipe 410 with the temperature reduced by the cooler 300. The high-temperature and high-pressure heating medium in the liquid phase moved to the coaxial cooling pipe inner pipe 410 undergoes heat exchange in the coaxial cooling pipe 400. In other words, the low-temperature and low-pressure heating medium on the gas phase moves on the outer surface 420 of the coaxial cooling tube, and heat exchange occurs due to the difference in heat quantity between them, and the high-temperature and high-pressure heating medium moving through the coaxial cooling pipe inner pipe 410, Move back to the state with reduced temperature.

The high-temperature and high-pressure heating medium in the liquid phase passed through the coaxial cooling pipe inner pipe 410 passes through the expansion pipe 500. The heating medium having passed through the expansion pipe (500) is decompressed to a pressure suitable for evaporation. The heating medium having passed through the expansion pipe 500 becomes a low-temperature low-pressure heating medium in a liquid phase and flows into the evaporator 600 located above the cooler 300. The evaporator (600) converts the liquid low-temperature low-pressure heating medium to a low-temperature low-pressure heating medium on the gas phase, absorbs the vaporization heat, and the periphery of the heating medium rapidly cools.

The heat medium to be cooled in the evaporator 600 is cooled by the heat dissipated from the condenser 200 installed in the lower portion of the cooler 300 and the temperature of the low temperature low- Lt; / RTI > The low-temperature low-pressure heating medium flowing out through the evaporator 600 again passes through the outer tube 420 of the coaxial cooling tube and the low-temperature low-pressure heating medium passing through the outer tube 420 of the coaxial cooling tube passes through the inner tube 410 of the coaxial cooling tube Heat exchange with the high-temperature high-pressure heating medium.

The low-temperature and low-temperature heating medium whose temperature has risen by passing through the outer pipe 420 of the coaxial cooling tube flows into the compressor 100 again and is converted into the high-temperature and high-pressure heating medium on the gaseous phase to circulate.

The cooling and heating heat exchange system according to the embodiment of the present invention includes a condenser 200 and an evaporator 600 installed in a cooler 300 including a fluid so that the cooling temperature of the evaporator 600 The heat of the condenser 200 is cooled by using the cold heat of the evaporator 600, and the heat source is consumed. Further, since the coaxial cooling pipe inner pipe 410 and the coaxial cooling pipe outer pipe 420 having the outer coaxial cooling pipe outer pipe 420 are installed separately, heat exchange can be performed between the high-temperature and high-temperature heat medium and the low-temperature and low-temperature heat medium, Or excessive heating and excessive cooling of the cooled heating medium can be prevented. Such a result can reduce the load acting on the compressor 100 included in the cooling / heating heat exchange system, thereby enabling more stable system operation.

In addition, although a water-cooled cooling system is adopted, a condenser 200 for dissipating heat is provided in the cooler 300 to prevent the fluid contained in the cooler 300 from freezing even at an external low temperature.

5 is a schematic system block diagram of a cooling / heating heat exchange system including a hot water supply device.

The cooling / heating heat exchange system according to the embodiment of the present invention further includes a hot water supplier (700). The hot water supply unit 700 is formed between the compressor 100 and the condenser 200 and heats the water using a high-temperature and high-pressure heating medium.

As shown in FIG. 5, the hot water supplier 700 may be located between the compressor 100 and the condenser 200. The heating medium flowing out through the compressor 100 is a gas-phase high-temperature and high-pressure heating medium. The heating medium pipe through which the high-temperature and high-pressure heating medium is passed is a zigzag pipe having a plurality of curvatures and is installed in the hot water supply device 700. The hot water supply device 700 is provided with a water supply pipe and a water discharge pipe so that the low temperature water that has passed through the water supply pipe comes into contact with the heat medium pipe to cause heat exchange and the water discharged to the water discharge pipe is heated by the heat medium pipe, Of water.

The cooling / heating heat exchange system according to the embodiment of the present invention can be applied to various types of air conditioners.

As described above, in the cooling / heating heat exchange system according to the embodiment of the present invention, a large number of heat exchanges between heating media can be performed to reduce the load on the compressor, and efficient system construction can be achieved by utilizing the heat generated by the phase change or the cooling heat .

100 compressor 200 condenser
300 Cooler 400 Coaxial cooling tube
410 coaxial cooling pipe inner pipe 412 spacer
414 cap 416 transmission hole
420 Coaxial cooling tube Appearance 500 Expansion tube
600 Evaporator 700 hot water supply

Claims (10)

A compressor for converting an incoming heat medium into a high temperature and high heat medium and discharging the heat medium;
A condenser connected to the compressor to convert the gas phase heating medium into a liquid phase heating medium;
A cooler for cooling the heat generated in the liquid phase heat medium having passed through the condenser by using a fluid;
A coaxial cooling tube which is formed as a coaxial double tube including an inner tube and an outer tube and which passes the liquid phase heat medium flowing out of the cooler through an inner tube or an outer tube so as to cool the liquid phase heat medium again;
An expansion pipe connected to any one of the inner pipe of the coaxial cooling pipe and the outer pipe of the coaxial cooling pipe to convert the high-pressure liquid-phase heat-transfer medium into a low-pressure liquid-phase heat medium;
And an evaporator for converting the low-pressure liquid-phase heat medium passed through the expansion pipe into a low-pressure gas phase heat medium,
Wherein the low pressure gaseous phase heating medium flowing through the evaporator passes through the cooler and flows into the compressor through the other of the outer tube of the coaxial cooling tube and the inner tube of the coaxial cooling tube. The method according to claim 1,
Wherein the cooler is a water tank containing a fluid for heat exchange. 3. The method of claim 2,
Wherein the condenser and the evaporator are installed so as to be submerged in fluid contained in the cooler. The method according to claim 1,
The coaxial cooling tube is configured to cause heat exchange between a high temperature, high pressure liquid phase heating medium circulating through the coaxial cooling tube inner tube and a low temperature, low pressure gas phase heating medium circulating through the outer tube of the coaxial cooling tube surrounding the coaxial cooling tube inner tube Wherein the cooling / heating heat exchanging system comprises: 5. The method of claim 4,
Wherein the inner tube of the coaxial cooling tube further comprises a spacer formed on the outer circumferential surface of the inner tube of the coaxial cooling tube. 5. The method of claim 4,
And a cap connected to one side of the coaxial cooling tube and guiding the heating medium flowing out of the coaxial cooling tube inner tube and the outer tube of the coaxial cooling tube to move through different circulation paths. The method according to claim 6,
Wherein the cap further comprises a permeable hole through which the heat medium flowing out of the outer tube of the coaxial cooling tube passes. The method according to claim 1,
Further comprising a hot water supply unit formed between the compressor and the condenser and heating the water using the high-temperature and high-pressure heat medium. The method according to claim 1,
Wherein the heating medium comprises at least one of ammonia, Freon, and methyl chloride. An air conditioner comprising the cooling / heating heat exchange system of claim 1.

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