KR100547670B1 - Heat pump system - Google Patents

Abstract

The present invention is provided with a heat exchanger fluid separator on a heat pump cycle to serve as a conventional fluid separator and to penetrate a refrigerant pipe through which a refrigerant flows from a cooling expansion tube to a heating expansion tube during a heating operation. The present invention relates to a heat exchange structure of a heat pump that prevents an overload of a compressor by improving heat exchange rate by performing heat exchange with each other and heat-exchanging the circumference of the heat exchange sap separator with a high temperature refrigerant.

   Heat Pump, Heat Separator

Description

   Heat pump structure of heat pump

1 is a schematic view of a conventional heat pump.

Figure 2 is a schematic diagram showing the flow of the refrigerant during heating of the heat pump according to an embodiment of the present invention.

Figure 3 is a schematic diagram showing the flow of the refrigerant during cooling of the heat pump according to an embodiment of the present invention.

Figure 4 is an internal view showing a fluid separator for heat exchange of the heat pump according to the first embodiment of the present invention.

5 is an internal view showing a fluid separator for heat exchange of a heat pump according to a second embodiment of the present invention.

Figure 6 is an internal view showing a fluid separator for heat exchange of the heat pump according to the third embodiment of the present invention.

Figure 7 is an internal view showing a fluid separator for heat exchange of the heat pump according to the fourth embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

1: compressor 3: indoor heat exchanger

4: 4-way valve 20: Sap separator for heat exchange

40: outdoor heat exchanger 110: tank

122,132,152: Inlet 1,2,3

124,134,154: 1,2.3 discharge outlet

140: heat exchange members 142a, 142b: coil pipe

146a, 146b: spray plate 150a, 150b: multilayer pipe

The present invention relates to a heat exchange structure of a heat pump, and more particularly, in a cooling expansion tube during heating operation to store a two-phase refrigerant while serving as a conventional fluid separator by providing a heat exchange fluid separator on a heat pump cycle. Heat exchange of heat pump which prevents overload of compressor by improving heat exchange rate by allowing heat exchange between heat exchanger fluid and heat exchanger by circulating the heat exchanger tube through a refrigerant pipe that flows refrigerant through a heating expansion tube. It's about structure.

The heat pump is one of the air conditioners that can serve both cooling and heating by reversing the flow of refrigerant in the cooling cycle of the air conditioner. Increasingly, the area of use is gradually expanding.

In order to overcome the limitation that can not be cooled below the room temperature, which is the heat exchange temperature range of the air-cooled outdoor heat exchanger, and to improve the performance of the heat pump, the heat exchange method of the outdoor heat exchanger was manufactured by water cooling. The air-conditioning device using a conventional water-cooled heat pump is disclosed in Korean Patent Publication No. 01006, and is shown in FIG.

That is, the four-way valve 4 for switching the flow of the refrigerant is located in the discharge portion of the compressor (1), to evaporate or condense the refrigerant transferred from the compressor (1) to perform heat exchange by absorption or discharge An internal heat exchanger (3) is positioned, and the water tank (9) filled with water (90) so that the heat exchange is performed by latent heat and sensible heat of water of a higher heat amount by cooling the internal heat exchanger (3) to water cooling. Bypass the internal heat exchanger (3) in the immersion, the bypass side of the internal heat exchanger (3) formed by the cooling expansion valve (5) for adiabatic expansion of the heat exchanged refrigerant to bypass the flow of the refrigerant It is located on the pipe 8.

On the main pipe formed in parallel with the cooling expansion valve 5, a heating check valve 6 'is formed to prevent the backflow of the refrigerant flowing in the heating operation.

The cooling check valve 6 is formed on the bypass pipe 8 formed in parallel with the main pipe so that the refrigerant passing through the cooling expansion valve 5 does not flow back when the refrigerant is introduced into the external heat exchanger 2. On the main pipe parallel to the cooling check valve (6) is a heating expansion valve (5 ') for adiabatic expansion and expansion of the refrigerant flowing during the heating operation, the refrigerant passing through the cooling check valve (6) is the indoor air And an external heat exchanger (2) for evaporating or condensing the refrigerant transferred by heat exchange, and an outlet side of the external heat exchanger (2) is connected to an inlet side of the four-way valve (4). The system is formed.

In addition, one side of the external heat exchanger (2) is provided with a blower (7) for blowing air or heat exchanged by the external heat exchanger (2) to perform cooling or heating in a room or a place that requires cooling and heating.

In addition, the internal heat exchanger (3) submerged in the water tank (9) is provided with separate valves (13) on the inlet and outlet sides, respectively, to facilitate maintenance.

However, the conventional heat pump only performs a function of preventing the liquid refrigerant from entering the fluid separator into the compressor, and does not change the phase of the liquid refrigerant inside the fluid separator in the gas phase to thereby form a liquid phase. When the outdoor temperature is lowered to store a large amount of the liquid refrigerant, there was a problem that the heating efficiency is lowered.

The present invention has been proposed to solve the above problems of the prior art, by spraying the refrigerant flowing into the fluid separator from the outdoor heat exchanger during the heating operation of the heat pump to change the phase of the liquid refrigerant to the gas phase and the liquid separator of the As it passes through the refrigerant pipe that guides the refrigerant through the cooling expansion tube inside, it exchanges heat with the refrigerant inside the fluid separator, and heats it with the refrigerant inside the fluid separator to exchange heat with the refrigerant inside the fluid separator or the fluid separator. It is an object of the present invention to provide a heat exchange structure of a heat pump to block heat transfer of outside air by forming a vacuum layer around the periphery.

The heat exchange structure of the heat pump according to the present invention for achieving the above object is a compressor, a four-way valve, an indoor heat exchanger for heat absorption or heat dissipation and heat exchange by evaporating or condensing a refrigerant, a cooling expansion tube, a heating expansion tube, It is connected to the heating expansion tube is water-cooled condensing the refrigerant during cooling operation to discharge the heat, and is composed of an outdoor heat exchanger to evaporate the refrigerant during the heating operation to absorb heat, for the heat exchange between the cooling expansion tube and the heating expansion tube And a tank for discharging the liquid refrigerant to the outside by forming an empty space therein and forming a drainage hole at the bottom, and an upper portion of the tank formed on top of the tank to heat the outdoor unit. A first inlet for introducing the refrigerant discharged from the heat exchanger, and a lower portion of the tank and discontinuously formed with the first inlet; And a first discharge port for discharging a gaseous refrigerant in the direction of the compressor from the refrigerant flowing through the first inlet to the compressor, and a refrigerant formed at an upper portion of the tank and moved through the cooling expansion tube. A second inlet formed at a lower portion of the tank, the second inlet formed to be continuously connected to the second inlet to exchange heat with the refrigerant inside the tank, and to be discharged toward the heating expansion tube; It is characterized in that the heat exchange structure of the heat pump formed of a heat exchange member for forming a heat exchange by spraying the refrigerant introduced into.

In addition, as an embodiment of the present invention, the heat exchange member connects the second inlet and the second discharge port in a tank, a coil tube having a coil shape, a bracket extending from a lower surface of the tank, and an end of the bracket. It is formed integrally with, characterized in that made of a spray plate formed with pores to strike and spray the low-pressure refrigerant condensed through the first inlet.

In addition, according to an embodiment of the present invention, the heat exchange member includes a plurality of coil tubes having a coil shape with a plurality of minute diameters connecting the second inlet and the second outlet, and a bracket extending from a lower surface of the tank. It is formed integrally at the end of the bracket, it is formed in the shape of a hat, characterized in that consisting of a spray plate for hitting and spraying the condensed low-pressure refrigerant flowing through the first inlet.

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

Figure 2 is a schematic diagram showing the flow of the refrigerant during the heating of the heat pump according to an embodiment of the present invention, Figure 3 is a schematic diagram showing the flow of the refrigerant during cooling of the heat pump according to an embodiment of the present invention.

4 to 7 are internal views showing the fluid separator for heat exchange of a heat pump according to the first to fourth embodiments of the present invention.

As shown in Figure 2 and 3, the heat pump according to an embodiment of the present invention is a compressor (1), four-way valve (4), indoor heat exchanger (3), cooling expansion tube (10), fluid for heat exchange It consists largely of the separator 20, the heating expansion pipe 30, the outdoor heat exchanger 40, the double pipe 50, and the heat exchange pipe 60.

At this time, the compressor (1), the four-way valve (4) and the indoor heat exchanger (3) is connected to the first refrigerant pipe (11), the indoor heat exchanger (3) and the heat exchange fluid separator (20) It is connected to the two refrigerant pipes 12, the heat exchange fluid separator 20 and the heating expansion pipe 30 is connected to the third refrigerant pipe (13).

The heating expansion tube 30 and the outdoor heat exchanger 40 are connected to the fourth refrigerant pipe 14, and the outdoor heat exchanger 40, the double pipe 50, the four-way valve 4, and the heat exchange fluid The separator 20 is connected to the fifth refrigerant pipe 15, and the heat exchanger fluid separator 20 and the compressor 1 are connected to the sixth refrigerant pipe 16.

The compressor 1 performs a function of compressing a refrigerant and converting the refrigerant into a high temperature and high pressure state.

In addition, the four-way valve (4) is formed on the outlet side of the compressor (1) to switch the flow of the refrigerant in the direction of the indoor heat exchanger (3) when heating, the direction of the double pipe (50) when cooling.

The indoor heat exchanger (3) serves as a condenser to condense the refrigerant during the heating operation, serves as an evaporator to evaporate the refrigerant during the cooling operation, and performs heat exchange by release or absorption.

In addition, the cooling expansion tube 10 is connected to the discharge side of the indoor heat exchanger (3) during heating, and condensed in the indoor heat exchanger (3) by being wound around the first refrigerant pipe (11) for guiding the refrigerant in a high temperature and high pressure state. As it dissipates heat, it compensates the temperature of the refrigerant whose temperature has decreased and expands the heat exchanged refrigerant during cooling.

In this case, the cooling expansion tube 10 is branched from the second refrigerant tube 12, the check valve 80 is provided at the branching point.

The check valve 80 moves the entire amount to the cooling expansion tube 10 in order to expand the refrigerant heat exchanged during the cooling operation, and the refrigerant during heating to the fluid separator 20 for heat exchange directly from the indoor heat exchanger (3). A portion of the refrigerant is passed through the cooling expansion tube 10 while being transferred to control the flow of the refrigerant so as to achieve a predetermined temperature compensation.

In addition, the heat-transfer sap separator 20 passes the condensed refrigerant moving through the second refrigerant pipe 12 during heating to guide the heating expansion tube 30 through the third refrigerant pipe 13. The refrigerant having a low temperature and low pressure of two phases passing through the outdoor heat exchanger 40 and the four-way valve 4 is introduced through the fifth refrigerant pipe 15 to heat exchange the mutual refrigerants.

Thus, the heat exchange fluid separator 20 vaporizes the refrigerant in the liquid phase of the two-phase refrigerant filled in the interior and guides the compressor 1 through the sixth refrigerant pipe 16 to improve durability of the compressor 1. Increase.

As shown in FIG. 4, the fluid separator 20 for heat exchange according to the first embodiment of the present invention includes a tank 110, a first inlet 122, a first outlet 124, and a second inlet 132. ), The second discharge port 134 and the heat exchange member 140 are large.

The tank 110 is formed of a cylindrical tube or a polygonal tube.

In addition, the tank 110 forms a drain hole 112 at a lower portion thereof, and the drain hole 112 forms an open / close valve 114.

In addition, the tank 110 forms a first inlet 122 for introducing a low-temperature, low-pressure two-phase refrigerant passing through the outdoor heat exchanger 40 and the four-way valve 4.

That is, the first inlet 122 is connected to the fifth refrigerant pipe 15.

In addition, the tank 110 has a first inlet 124 for discharging only the gaseous refrigerant in the direction of the compressor 1 among the refrigerant introduced into the interior through the first inlet 122, and has a first inlet. And discontinuous with 122.

That is, the first discharge port 124 is connected to the sixth refrigerant pipe 16, it is installed to be inserted up to the inner upper portion of the tank (110).

In addition, the tank 110 forms a second inlet 132 in the upper portion, and a second outlet 134 in the lower portion, and the second inlet 132 and the second outlet 134 in the tank ( 110) provided continuously in the interior.

The second inlet 132 is connected to the cooling expansion tube 10, the second discharge port 134 is connected to the heating expansion tube (30).

In addition, the heat exchange member 140 is provided to heat exchange by spraying the refrigerant introduced into the tank 110.

At this time, the heat exchange member 140 is composed of a coil pipe 142a, a bracket 144a and a spray plate 146a.

The coil pipe 142a continuously connects the second inlet 132 and the second discharge port 134 in the tank 110, and is formed in a coil shape to surround the first discharge port 124.

In addition, the bracket 144a extends downward from the upper surface of the tank 110 and the spray plate 146a is formed integrally with the bracket 144a.

The spray plate 146a is formed at a position corresponding to a lower portion on the axis of the first inlet 122, and forms a plurality of fine pores 147.

Thus, the spray plate 146a is evaporated in the outdoor heat exchanger 40 during heating and enters a refrigerant present in two phases of a gas and a liquid having a low temperature and low pressure into the first inlet 122, and then porous the refrigerant that hits the air ( 147) while spraying.

Of course, the refrigerant flowing through the first inlet 122 may be sprayed while being bounced back against the spray plate 146a itself.

In this case, the sprayed refrigerant protrudes the partition 115 at regular intervals on the inner surface of the tank 110 to slow the flow in the tank 110.

Then, the sprayed refrigerant may not perform the convection activity smoothly due to the interference of the partition 115 in the tank 110.

In addition, the coil pipe 142a is heat-exchanged while being in contact with the refrigerant in a small particle state that is sprayed down.

That is, when heating, the low-temperature, low-pressure two-phase refrigerant passing through the outdoor heat exchanger 40 flows into the tank 110 through the first inlet 122 and passes through the pores 147 of the spray plate 146a. Sprayed continuously.

At this time, the sprayed refrigerant is heat exchanged with the circumference of the coil tube 142a for guiding the refrigerant having a predetermined temperature while passing through the cooling expansion tube 10 to obtain heat.

Thus, the refrigerant in the gas phase flows into the compressor 1 through the second discharge port 134 when heating, and when the liquid refrigerant is stored in the tank 110 more than a predetermined time, the opening / closing valve 114 is opened to discharge the drain 112. Discharge to the outside through.

In addition, the refrigerant heat exchanged through the coil pipe 142a moves to the heating expansion pipe 30 through the second discharge port 134.

On the other hand, the first refrigerant pipe 11 is extended and welded around the tank 110.

The first refrigerant pipe 11 is connected to the discharge side of the compressor 1 to guide the high temperature refrigerant to be wound around the tank 110 to exchange heat with the relatively low temperature refrigerant inside the tank 110 during welding.

Thus, the refrigerant inside the tank 110 exchanges heat with the refrigerant inside the first refrigerant pipe 11 in a liquid state, and is partially changed into a gaseous state.

On the other hand, as shown in Figure 5, the heat exchange receiver according to the second embodiment of the present invention tank 110, the first inlet 122, the first discharge port 124, and the second inlet ( 132, the second discharge port 134, and the heat exchange member 140.

At this time, the tank 110 is formed to seal the double-layer pipe (150a) around.

The multilayer pipe 150a and the tank 110 are partitioned, and the multilayer pipe 150a forms a third inlet 152 on the upper side and a third discharge port 154 on the lower side.

The third inlet 152 is connected to the discharge side of the compressor (1).

Thus, the refrigerant inside the first refrigerant pipe 11 is introduced into the multilayer pipe 150a through the third inlet 152 and flows to the refrigerant inside the tank 110 while flowing.

At this time, the tank 110 is made of a material such as copper and lead high thermal conductivity.

Then, the refrigerant heat exchanged in the multilayer pipe (150a) is guided to the indoor heat exchanger (3) during heating while being moved to the four-way valve (4) through the third discharge port 154, and guided to the double pipe (50) during cooling do.

The third inlet 152 and the third discharge port 154 are provided on the opposite side of the straight line passing through the center in the multilayer pipe 150a and formed in diagonal directions to increase the flow time of the introduced refrigerant.

Unexplained reference numerals replace those described above, and perform the same function.

In addition, as shown in Figure 6, the heat-transfer sap separator 20 according to the third embodiment of the present invention is made of a configuration of the heat exchange member 140 and the multilayer pipe 150b inside the tank 110, It is characterized by maintaining the inside of the multilayer pipe (150b) in a vacuum state.

The multilayer pipe 150b has an air outlet 156 formed therein, and a check valve 158 is provided at the air outlet 156.

Thus, the air inside the multilayer pipe 150b is forcibly discharged through the air outlet 156, and the external air is not introduced into the multilayer pipe 150b by the check valve 158.

The reason why the multilayer pipe 150b keeps the vacuum inside is because the heat exchange between the refrigerant filled inside the tank 110 and the refrigerant inside the coil pipe 142a is not changed by the temperature outside the tank 110. 110) It is to block heat exchange inside and outside.

Of course, when the multilayer pipe 150b maintains the vacuum state, sufficient heat exchange occurs in the heat exchanger fluid separator 20.

Unexplained reference numerals are replaced with those described above, and perform the same function.

On the other hand, as shown in Figure 7, the heat-transfer sap separator 20 according to the fourth embodiment of the present invention is different from the above described in the heat exchange member (140).

That is, the heat exchange member 140 has a plurality of coil pipes 142b having a coil shape with a plurality of minute diameters connecting the second inlet 132 and the second discharge port 134 in the tank 110, and the It is formed integrally with the bracket (144b) extending from the upper surface of the tank 110, the end of the bracket (144b), is formed in the shape of a hat and hit the low-pressure refrigerant flowing through the first inlet 122 to spray It is characterized by consisting of a spray plate (146b).

The coil pipe 142b connects the second inlet 132 and the second discharge port 134 in the tank 110 and is composed of a plurality of fine tubes.

The coil pipe 142b is wound in a coil shape, and is wound and installed in a shape of an upper light narrowing diameter having a large upper diameter and a lower diameter.

Thus, the coil pipe 142b widens the contact area with the refrigerant filling the inside of the tank 110 so that heat exchange occurs more actively.

In addition, the first discharge port 124 for introducing only the refrigerant in the gas phase into the compressor 1 during heating, among the refrigerant filling the inside of the tank 110, forms a microtube 160 around the periphery.

A space is formed between the microtubules 160 and the first discharge port 124, and the space is opened upward.

In addition, the microtubes 160 form a plurality of micropores 162 on the periphery of the first inlet 122 and sink to the bottom of the tank 110 in a liquid state of the refrigerant sprayed by the spray plate. Allow some vaporization when passing through the refrigerant.

The refrigerant in the gas phase is guided to the compressor 1 through the first discharge port 124.

Of course, the tank 110 forms a double-layer pipe (150a) in the circumference, the double-layer pipe (150a) is a third inlet 152 connected to each of the first refrigerant pipe (11) for flowing a high-temperature refrigerant and The third discharge port 154 is provided to exchange heat with the refrigerant in the tank 110.

Unexplained reference numerals are replaced with those described above, and the same functions will be performed.

As illustrated in FIGS. 2 and 3, the outdoor heat exchanger 40 evaporates the refrigerant during the heating operation.

In addition, the double tube 50 is a shape containing the heating expansion tube 30, and heat-exchanges with the refrigerant passing through the heating expansion tube 30 while guiding the refrigerant in a low-temperature low-pressure state during heating.

The reason why the double tube 50 contains the heating expansion tube 30 is to allow mutual heat exchange while being installed in a simple structure for the flow of the refrigerant.

In addition, the low temperature low pressure refrigerant transferred through the double pipe 50 is diverted through the four-way valve 4 to the heat exchange tube 60 wound around the first refrigerant pipe 11 for transferring the high temperature and high pressure refrigerant. You are guided.

The heat exchange tube 60 is connected to the outlet side of the compressor 1 and wound around the first refrigerant pipe 11 for flowing the refrigerant in a high temperature and high pressure state to compensate the temperature of the refrigerant in the low temperature and low pressure state.

The refrigerant having a predetermined temperature compensation through the outdoor heat exchanger 40 is introduced into the first inlet 122 of the sap separator 20 for heat exchange.

On the other hand, the refrigerant in the gas phase separated from the liquid phase refrigerant in the heat exchanger fluid separator 20 is moved to the compressor 1 through the sixth refrigerant pipe (16).

At this time, the refrigerant inside the heat exchange sap separator 20 prevents the overload of the compressor 1 due to an increase in temperature while heat-exchanging with the coil pipe.

Referring to the refrigerant flow of the heat pump system according to the present invention described above are as follows.

First, as shown in Figure 2, in the heating mode, the refrigerant is a compressor (1) → the first refrigerant pipe (11) → heat exchange fluid separator (20) → the first refrigerant pipe (11) → four-way valve (4) → first refrigerant tube 11 → indoor heat exchanger 3 → second refrigerant tube 12 → cooling expansion tube 10 and check valve 80 → second refrigerant tube 12 → sap separator for heat exchange ( 20) → 3rd refrigerant tube (13) → heating expansion tube (30) → 4th refrigerant tube (14) → outdoor heat exchanger (40) → 5th refrigerant tube (15) → double tube (50) → 5th refrigerant tube (15) → Four-way valve (4) → Fifth refrigerant tube (15) → Heat exchange tube (60) → Fifth refrigerant tube (15) → Sap separator (20) for heat exchange → Sixth refrigerant tube (16) → Compressor ( It goes through the circulation path of 1).

At this time, the heat-transfer sap separator 20 prevents the overload of the compressor 1 by increasing the temperature of the refrigerant flowing into the compressor 1 by heat exchange with the refrigerant in the first refrigerant pipe (11).

And, as shown in Figure 3, in the cooling mode, the refrigerant is a compressor (1) → the first refrigerant pipe (11) → heat exchange fluid separator (20) → the first refrigerant pipe (11) → four-way valve (4) → Fifth refrigerant tube (15) → Double tube (50) → Fifth refrigerant tube (15) → Outdoor heat exchanger (40) → Fourth refrigerant tube (14) → Heating expansion tube (30) → Third refrigerant tube (13 ) → heating expansion tube (30) → second refrigerant tube (12) → cooling expansion tube (10) → second refrigerant tube (12) → indoor heat exchanger (3) → first refrigerant tube (11) → four-way valve ( 4) → Fifth refrigerant tube (15) → Heat exchange tube (60) → Fifth refrigerant tube (15) → Heat exchanger fluid separator (20) → Sixth refrigerant tube (16) → Compressor (1) Cooling is achieved.

As described above, according to the heat exchange structure of the heat pump according to the present invention, it is possible to prevent the overload of the compressor by compensating the temperature of the refrigerant flowing into the compressor from inside the sap separator during heating in cold weather of the heat pump.

In addition, the sap separator is sprayed when the two-phase refrigerant is introduced into the interior when heated, there is an effect that can further promote the phase change from the liquid phase to the gas phase by making the particles smaller.

In addition, the fluid separator has an effect that can increase the heat exchange rate by increasing the contact area with the falling refrigerant by winding the coil pipe penetrating in the shape of a coil to provide a heat exchange with the refrigerant filled therein in the upper light substrait. .

In addition, the fluid separator has an effect of improving the temperature compensation of the internal refrigerant and the phase change of the gas phase by contacting the outer circumference with the high temperature refrigerant discharged from the compressor.

Claims (9)

During the heating, the refrigerant compressed in the compressor is circulated to the indoor heat exchanger through the first refrigerant pipe, and the refrigerant condensed in the indoor heat exchanger moves to the cooling expansion tube through the second refrigerant pipe to the cooling expansion tube. The refrigerant passing through the heat exchanger fluid separator is filtered only by the gaseous phase to the heating expansion tube through the third refrigerant pipe, and also through the outdoor heat exchanger through the fourth refrigerant pipe. In the heat pump that passes through the separator and is recycled to the compressor through the sixth refrigerant pipe, and the refrigerant is discharged from the compressor during cooling, circulating the opposite cycle, The heat exchanger fluid separator comprises a tank which forms an empty space therein and forms a drain hole at the bottom to discharge the liquid refrigerant to the outside; A first inlet formed at an upper portion of the tank to introduce refrigerant discharged from the outdoor heat exchanger on a circulation cycle during heating; A first discharge port formed at a lower portion of the tank and discontinuously installed with the first inlet 122 and discharging the refrigerant in a gaseous phase in the direction of the compressor from the refrigerant flowing through the first inlet; ; A second inlet formed at an upper portion of the tank to introduce a refrigerant moving through the cooling expansion tube; A second discharge port formed at a lower portion of the tank and continuously installed with the second inlet port to exchange heat with the refrigerant inside the tank and to discharge the refrigerant toward the heating expansion tube; Heat exchange structure of the heat pump, characterized in that it comprises a heat exchange member is formed inside the tank to spray the refrigerant introduced into the heat exchange. The method of claim 1, The heat exchange member is connected to the second inlet and the second discharge port in the tank, the coil tube having a coil shape; A bracket extending from a lower surface of the tank; Heat exchange structure of the heat pump, characterized in that the integrally formed on the end of the bracket, the spray plate formed in the porous hole to hit and spray the refrigerant of low pressure through the first inlet. The method of claim 1, The heat exchange member includes a plurality of coil pipes having a coil shape with a plurality of minute diameters connecting the second inlet and the second outlet to the inside of the tank; A bracket extending from a lower surface of the tank; Heat exchange structure of the heat pump, characterized in that the integrally formed on the end of the bracket, formed of a hatshade and made of a spray plate to strike and spray the low-pressure refrigerant flowing through the first inlet. The method of claim 1, The tank is heat-exchanging structure of the heat pump, characterized in that the heat exchange with the high temperature refrigerant by welding the first refrigerant pipe extending around. The method of claim 1, The tank has a heat exchange structure of a heat pump, characterized in that to form a multi-layered pipe around the circumference and maintain the inside of the vacuum to block the temperature exchange between the inside and the outside of the tank. The method of claim 1, The tank wraps around and forms a closed multilayer pipe; The multilayer pipe has a third inlet for introducing a high temperature refrigerant from the compressor and a third discharge port for guiding the refrigerant heat exchanged with the internal refrigerant of the tank toward the indoor heat exchanger. The method of claim 1, The first discharge port forms a microtube around a portion corresponding to the inside of the tank; The microtube has a plurality of micropores formed around the heat exchange structure of the heat pump, characterized in that passing through the refrigerant introduced into the open upper portion to separate the refrigerant in the liquid state. The method according to any one of claims 1 to 3,  The tank heat exchange structure of the heat pump, characterized in that by forming a plurality of partitions on the inner circumference to increase the heat exchange rate by interfering with the refrigerant flow therein. The method of claim 2 or 3, The coil pipe is wound in the shape of the ordinary light and the bottom heat exchange structure of the heat pump, characterized in that to increase the contact area with the liquid refrigerant descending in the tank.

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