KR100531186B1 - Refrigerant cycle system with cold and hot water manufacturing function - Google Patents

Abstract

The present invention relates to a refrigerant cycle system having a cold and hot water production function, wherein a refrigerant is moved along a circulation path supplied to an expander through an expander, an indoor unit having an indoor heat exchanger, an outdoor unit having a compressor and an outdoor heat exchanger, In the refrigerant cycle system configured to lower the temperature, when the pressure of the refrigerant discharged from the compressor is lower than a predetermined reference pressure, some or all of the refrigerant discharged from the compressor is supplied back to the compressor to compress, and condensed in the outdoor unit The refrigerant is introduced into the expander through a heat exchange circuit, a portion of the refrigerant flowing into the expander is adiabatic expansion in the auxiliary expander, the refrigerant discharged from the auxiliary expander and the refrigerant evaporated in the indoor unit is mixed through the heat exchange circuit. Is supplied to the compressor, the outdoor unit Hot water is produced by heat exchange between the high temperature refrigerant passing through the external heat exchanger and the water passing through the heat exchanger for producing hot water, and cold water is produced by heat exchange between the low temperature refrigerant passing through the indoor heat exchanger of the indoor unit and the water passing through the heat exchanger for producing cold water. According to this, cold water is produced by heat exchange between water and a low temperature refrigerant, and hot water is produced by heat exchange between water and a high temperature refrigerant.

Description

Refrigerant cycle system with cold and hot water manufacturing function

The present invention relates to a refrigerant cycle system having a cold and hot water production function, and more particularly to a cold and hot water production function that allows cold water is produced by heat exchange between water and low temperature refrigerant and hot water can be produced by heat exchange between water and high temperature refrigerant. It relates to a refrigerant cycle system having.

In general, the refrigerant cycle system absorbs heat from the temperature control zone by the phase change of the refrigerant circulated along a predetermined path and discharges it to the outside of the temperature control zone or, conversely, absorbs heat from the outside of the temperature control zone. It is configured to supply to perform cooling or heating. At this time, when the cooling is performed, the refrigerant circulates the process of evaporation → compression → condensation → expansion → evaporation, and when heating is performed, the refrigerant circulates the process of evaporation → expansion → condensation → compression → evaporation.

In such a refrigerant cycle system, since a temperature control area or an air conditioning area (hereinafter, a room is usually set as a temperature control area), the temperature control area is referred to as 'indoor' and the outside of the temperature control area is referred to as 'outdoor' for convenience of description. Cooling system configured to reduce the temperature of the heating), a heating system configured to increase the temperature of the room, and a cooling and heating system configured to lower or increase the temperature of the room according to the user's choice.

In general, a refrigerant cycle system includes an indoor unit disposed indoors, an outdoor unit disposed outdoors, a compressor that sucks in a low temperature low pressure refrigerant, compresses it in an adiabatic state, and discharges it into a high temperature high pressure refrigerant, and expands a high temperature high pressure refrigerant in an adiabatic state by An expander for discharging to a low pressure refrigerant, pipes for connecting the indoor unit, outdoor unit, compressor, and expander so that the refrigerant can be circulated in a predetermined path, sensors installed at a predetermined position selected in advance, and detecting the temperature and pressure of the refrigerant; And a control unit for supplying power to the compressor, the sensors, etc., and receiving information from the sensors to control the operation of the compressor. The air conditioning system further includes valves for changing the path of the refrigerant.

The case where the room is cooled by the cooling system or the air-conditioning system using such a refrigerant cycle system and the case where the room is heated by the heating system or the air-conditioning system will be described in more detail.

First, in the case of cooling, in the indoor unit, the liquid refrigerant introduced at low temperature and low pressure is evaporated while taking heat away from the room, and then discharged to the compressor. In the compressor, the low-temperature, low-pressure gaseous refrigerant introduced from the indoor unit is compressed and discharged into the high-temperature, high-pressure gaseous refrigerant. In the outdoor unit, the gaseous refrigerant discharged from the compressor and introduced at a high temperature and high pressure is condensed into a liquid refrigerant having a high temperature and high pressure while dissipating heat to the outside and then discharged to the expander. The expander expands the high temperature and high pressure liquid refrigerant introduced from the outdoor unit to discharge the low temperature low pressure liquid refrigerant, and forms a circulation cycle in which the low temperature low pressure liquid refrigerant discharged from the expander flows into the indoor unit.

Next, in the case of heating, in the indoor unit, the gaseous refrigerant introduced at high temperature and high pressure condenses into a liquid refrigerant having high temperature and high pressure while dissipating heat into the room, and then is discharged to the expander. In the expander, the high temperature and high pressure liquid refrigerant introduced from the indoor unit is expanded and discharged into the low temperature and low pressure liquid refrigerant. In the outdoor unit, the low-temperature, low-pressure liquid refrigerant introduced from the expander is evaporated while taking heat away from the outdoor, and then discharged to the compressor. In the compressor, the low-temperature low-pressure gaseous refrigerant introduced from the outdoor unit is compressed and discharged into the high-temperature, high-pressure gaseous phase refrigerant, and the high-temperature, high-pressure gaseous phase refrigerant discharged from the compressor forms a circulation cycle.

However, when the refrigerant cycle system having the above structure is limited to a cooling / heating function that controls the temperature of indoor air to be in a preset temperature range by using the heat of the low temperature and the high temperature refrigerant, the heat of the high temperature and the low temperature during the cooling and heating operation is limited. There is a problem that is discarded unnecessarily.

The present invention is to solve the above problems, a refrigerant cycle having a hot and cold water production function to be able to fully utilize the heat of the hot and cold refrigerant by producing hot and cold water by indirect heat exchange between the hot and cold refrigerant and water The purpose is to provide a system.

As a technical configuration for achieving the above object, the present invention is a cooling area is a cooling zone while moving along the circulation path is supplied to the expander again through an expander, an indoor unit having an indoor heat exchanger, an compressor and an outdoor unit having an outdoor heat exchanger. In the refrigerant cycle system configured to lower the temperature of the refrigerant, when the pressure of the refrigerant discharged from the compressor is lower than a predetermined reference pressure, some or all of the refrigerant discharged from the compressor is supplied back to the compressor to compress, and in the outdoor unit The condensed refrigerant flows into the expander through a heat exchange circuit, a portion of the refrigerant flowing into the expander is adiabaticly expanded in the auxiliary expander, and the refrigerant discharged from the auxiliary expander and the refrigerant evaporated from the indoor unit pass through the heat exchange circuit. Is mixed and supplied to the compressor, the outdoor heat of the outdoor unit Hot water is produced by heat exchange between the high temperature refrigerant passing through the ventilation and the water passing through the heat exchanger for producing hot water, cold water is produced by heat exchange between the low temperature refrigerant passing through the indoor heat exchanger of the indoor unit and the water passing through the heat exchanger for producing cold water. By providing a refrigerant cycle system having a cold and hot water production function.

In addition, the present invention, the refrigerant cycle system configured to increase the temperature of the indoor heating area while the refrigerant is moved along the circulation path supplied back to the expander through the expander, the outdoor unit having an outdoor heat exchanger, the compressor and the indoor unit having an indoor heat exchanger. In the present invention, when the pressure of the refrigerant discharged from the compressor is lower than a predetermined reference pressure, a part or all of the refrigerant discharged from the compressor is supplied to the compressor again to compress, and the refrigerant condensed in the indoor unit is passed through the heat exchange circuit through the expander A portion of the refrigerant flowing into the expander is adiabatic expansion in the auxiliary expander, the refrigerant discharged from the auxiliary expander and the refrigerant evaporated from the outdoor unit is mixed through the heat exchange circuit and supplied to the compressor, the outdoor unit Refrigerant and cold bridge for cold water passing through outdoor heat exchanger Cold water is produced by the heat exchange of the water passing through the ventilation, the refrigerant cycle system having a cold and hot water production function characterized in that the hot water is produced by the heat exchange between the high temperature refrigerant passing through the indoor heat exchanger of the indoor unit and the water passing through the heat exchanger for producing hot water. By provision.

In addition, the present invention, the refrigerant consists of an expander, an indoor unit having an indoor heat exchanger, a compressor and an outdoor heat exchanger, and by circulating the refrigerant to raise or lower the temperature of the room, which is a temperature control region, by using the state change of the refrigerant. In a refrigerant cycle system of an air conditioner, when the pressure of the refrigerant discharged from the compressor is lower than a predetermined reference pressure, a part or all of the refrigerant discharged from the compressor is supplied back to the compressor to compress the outdoor unit or the indoor unit. The refrigerant condensed at is introduced into the expander through a heat exchange circuit, and a part of the refrigerant flowing into the expander is adiabaticly expanded in the auxiliary expander, and the refrigerant discharged from the auxiliary expander and the refrigerant evaporated from the indoor unit or the outdoor unit are heat exchanged. It is mixed through a circuit and supplied to the compressor, the outdoor thermal bridge of the outdoor unit Cold water or hot water is produced by the heat exchange of the refrigerant passing through the heat exchanger and the water passing through the heat exchanger, cold water or hot water manufacturing function characterized in that the cold water or hot water is produced by heat exchange of the water passing through the heat exchanger and the refrigerant passing through the indoor heat exchanger of the indoor unit. By providing a refrigerant cycle system having a.

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

1 is a configuration diagram showing a first embodiment of a refrigerant cycle system according to the present invention. The refrigerant cycle system includes an expander (1) and an indoor heat exchanger (20) for receiving and evaporating refrigerant discharged from the expander (1). Is equipped with an indoor unit (2), a compressor (3) for receiving and compressing the refrigerant discharged from the indoor unit (2), and an outdoor unit with an outdoor heat exchanger (40) for receiving and condensing the refrigerant discharged from the compressor (3). It includes (4). Of course, the expander 1, the indoor unit 2, the compressor 3 and the outdoor unit 4 are connected by pipes and valves so as to form a refrigerant circulation path for cooling.

In particular, the inlet and outlet of the compressor 3 are respectively connected to the refrigerant suction pipe 91 and the refrigerant discharge pipe 92 are discharged from the indoor unit (2) of the low temperature low pressure sucked through the refrigerant suction pipe (91) The refrigerant is compressed into a refrigerant having a high temperature and high pressure, and is discharged to the outdoor unit 4 through the refrigerant discharge pipe 92. The refrigerant flows into the compressor 3 into the refrigerant suction pipe 91 and the refrigerant discharge pipe 92. For example, the refrigerant suction side sensor 91a for measuring the temperature and pressure of the refrigerant and the refrigerant discharge side sensor 92a for measuring the temperature and pressure of the refrigerant discharged from the compressor 3, for example, are respectively provided. .

The refrigerant cycle system of the present exemplary embodiment is configured to connect some of the high temperature and high pressure refrigerant discharged from the compressor 3 to the compressor 3 by connecting the refrigerant suction pipe 91 and the refrigerant discharge pipe 92. It has a pass pipe (6), the bypass pipe (6) has a flow rate control valve 62 configured to open and close the flow of the refrigerant and, if necessary, to adjust the flow rate of the refrigerant, the refrigerant flow pipe 92 A check valve 64 is provided to allow only the refrigerant suction pipe 91 to prevent the refrigerant from flowing back from the refrigerant suction pipe 91 toward the refrigerant discharge pipe 92.

In addition, the refrigerant cycle system of the present embodiment has a heat exchange circuit (7) installed between the expander (1) and the outdoor unit (4), the heat exchange circuit (7) is a housing 72 in which the heat exchanger (70) is built Has

The heat exchanger 70 provides a coolant flow path connecting the expander 1 and the outdoor unit 4, and two coolant inlets 72a and 72c and a coolant discharge port 72b are formed in the housing 72. The refrigerant flowing through the refrigerant inlet (72a, 72c) is in contact with the outer surface of the heat exchanger 70 and heat exchanged with the refrigerant of the heat exchanger 70 and then discharged through the refrigerant outlet (72b) Have

In addition, the auxiliary expansion pipe (93) is branched between the expander (1) and the heat exchange circuit (7) and connected to the first refrigerant inlet (72a) of the housing (72), the auxiliary expansion pipe (93) An auxiliary expander 8 for expanding the refrigerant and a flow control valve 93a for opening and closing of the refrigerant flow and adjusting the flow rate are provided.

In addition, the other refrigerant inlet 72c of the housing 72 is connected to the high temperature refrigerant inlet pipe 97 branched from the refrigerant suction pipe 91 which receives the refrigerant discharged from the indoor unit 2 and supplies it to the compressor 3. The high temperature refrigerant inlet pipe 97 is provided with a flow rate control valve 97a for opening and closing of the refrigerant flow and adjusting the flow rate.

In addition, the refrigerant discharge port 72b formed in the housing 72 is connected to the refrigerant suction pipe 91 through an auxiliary refrigerant suction pipe 94 so that the refrigerant and the auxiliary refrigerant suction pipe 94 of the refrigerant suction pipe 91 are closed. Refrigerants are mixed and supplied to the compressor (3). At this time, the auxiliary refrigerant suction pipe 94 is provided with an on-off valve 94a for opening and closing the refrigerant flow, the on-off valve 94a is a refrigerant from the refrigerant suction pipe (91) to the auxiliary refrigerant suction pipe (94). The check valve may be designed to prevent backflow.

In addition, a flow rate control valve 91b for opening and closing the refrigerant flow in the refrigerant suction pipe 91 and adjusting the flow rate of the refrigerant is installed, and opening and closing the refrigerant flow in the cold discharge discharge pipe 92 and, if necessary, the refrigerant. A flow rate control valve 92b for adjusting the flow rate of the gas is provided.

In addition, the refrigerant cycle system of the present embodiment includes a heat pipe 32 is installed to discharge the high heat generated in the compressor (3) to the low-temperature refrigerant, the heat pipe 32 provides a sealed space filled with the heat medium, This enclosed space provides a circulation path through which the vaporized gas heat medium rises and the liquid heat medium descends. That is, the heat pipe 32 may have a conventional structure in which heat transfer is performed by a natural circulation method in which the heat medium evaporated at the bottom rises and the heat medium condensed at the top descends.

Refrigerant cycle system of the present invention has the function to produce cold and hot water by indirect heat exchange of water and refrigerant.

First, the indoor unit 2 is provided with a cold water production heat exchanger 22 configured to exchange heat with the low temperature refrigerant passing through the water and the indoor heat exchanger 20, and the cold water production heat exchanger 22 is installed. Water is supplied through the water supply pipe 56, the pump 56a for increasing the pressure to move the water to the water supply pipe 56, and opening and closing the flow path to move the water and can adjust the opening degree of the flow path The flow control valve 56b is provided.

The water supplied to the cold water manufacturing heat exchanger 22 through the water supply pipe 56 is heat-exchanged with the low temperature refrigerant passing through the indoor heat exchanger 20 of the indoor unit 2 and then discharged through the water discharge pipe 57. The water discharge pipe 57 is provided with a flow control valve 57a for opening and closing the flow path through which water is moved and adjusting the opening degree of the flow path.

In addition, the filter 50 is provided to filter out foreign substances and heavy metals included in the water supplied to the cold water manufacturing heat exchanger 22 through the water supply pipe 56.

At this time, the indoor heat exchanger 20 is set to have a heat exchange capacity capable of cooling the water supplied through the water supply pipe 56 to a predetermined temperature while exhibiting the required cooling capacity.

In addition, it is preferable that a cold water storage tank (not shown) is provided for storing cold water discharged through the water discharge pipe 57.

Next, the outdoor unit 4 is provided with a heat exchanger 42 for producing hot water configured to exchange water with the high temperature refrigerant passing through the outdoor heat exchanger 40, and the heat exchanger 42 for producing hot water 42. ) Is supplied to the water through the water supply pipe 58, the pump 58a for increasing the pressure to move the water to the water supply pipe 58, opening and closing the flow path to the water and adjust the opening degree of the flow path The flow control valve 58b is provided.

Water supplied to the heat exchanger 42 for producing hot water through the water supply pipe 58 is heat-exchanged with the high temperature refrigerant passing through the outdoor heat exchanger 40 of the outdoor unit 4 and then discharged through the water discharge pipe 59. The water discharge pipe 59 is provided with a flow rate control valve 59a which opens and closes a flow path through which water is moved and adjusts the opening degree of the flow path.

In addition, a filter 50 for filtering and removing foreign substances and heavy metals included in water supplied to the heat exchanger 42 for producing hot water through the water supply pipe 58 is provided.

In addition, the hot water storage tank (not shown) for storing the hot water discharged through the water discharge pipe 59 is preferably provided.

The present invention further includes a function of manufacturing ice by heat exchange between low temperature refrigerant and water, and a part of the refrigerant discharged from the outdoor unit 4 and introduced into the indoor unit 2 is transferred through the refrigerant inlet pipe 110. It is introduced into the ice making expander 130.

In more detail, a part of the refrigerant discharged from the outdoor unit 4 and before entering the expander 1 is supplied to the refrigerant pipe 110 through the first branch pipe 112, or discharged from the expander 1. A portion of the refrigerant before the flow into the indoor unit 2 may be supplied to the refrigerant inlet pipe 110 through the second branch pipe 114, and the refrigerant may be supplied to the first and second branch pipes 112 and 114. Flow control valves 113 and 115 are respectively installed to open and close the flow and adjust the refrigerant flow rate.

The ice making expander 130 expands the refrigerant supplied to the refrigerant inlet pipe 110 through the first branch pipe 112 or the second branch pipe 114 to a low pressure suitable for ice making, and the ice making expander 130. The low temperature low pressure refrigerant discharged from is supplied to the ice making heat exchanger (140).

Of course, since the state of the refrigerant flowing through the first branch pipe 112 and the refrigerant flowing through the second branch pipe 114 is different, whether the refrigerant flows through the first branch pipe 112 or the second The expansion capacity of the ice making expander 130 should be set according to whether it flows through the branch pipe 114.

In addition, the water supply pipe 120 is branched from the water supply pipe 56, and the water supply pipe 120 has a flow control valve 122 for opening and closing the flow of water and adjusting the flow rate thereof.

In addition, the water supplied through the water supply pipe 120 is stored in the ice making container 150, the water stored in the ice making container 150 is configured to heat exchange with the low temperature refrigerant passing through the ice making heat exchanger (140).

The refrigerant discharged from the ice making heat exchanger 140 is supplied to the compressor 3 through the refrigerant discharge pipe 160 equipped with the flow control valve 162.

Of course, it may also be configured to be stored in the ice cubes (not shown) to be installed separately from the ice cubes manufactured in the ice making container 150.

In addition, the present invention has a configuration that the refrigerant cycle system is provided with an oxygen generator to supply oxygen to the room through the indoor unit (2).

More specifically, the ozone generator 51 for generating ozone is provided, the ozone generated in the ozone generator 51 is discharged through the ozone discharge pipe 52 is supplied to the oxygen generator 53, the oxygen generator Oxygen generated in the 53 is supplied to the indoor unit 2 through the oxygen discharge pipe (54).

The ozone generator 51 inhales air through an air suction pipe 51a provided with a pump 51b and a flow control valve 51c, and then generates ozone by a general method such as ultraviolet irradiation, electrolysis, and electrical discharge. The ozone is discharged through an ozone discharge pipe 52 equipped with a flow control valve 52a. Preferably, the ozone generator 51 has a structure for generating ozone by an electrical discharge capable of generating a high concentration or a large amount of ozone. For reference, the ozone generating structure by the electrical discharge method is generally used for barrier discharge. By the way, it is disclosed in Korea Patent Publication 2001-5441, Korea Patent Publication 2001-15789 and the like.

Of course, after ozone is generated in the air sucked through the air suction pipe 51a, the other components are discharged to the atmosphere through the air discharge pipe 51d, and the pump 51b sucks the air to generate an ozone generator at an appropriate pressure. 51, the flow rate control valve 51c has a function of adjusting the air flow rate sucked through the air suction pipe 51a in consideration of the ozone generating ability of the ozone generator 51 and the like.

In addition, the ozone discharge pipe (52) is branched with an ozone bypass pipe (55) equipped with a flow control valve (55a), and the ozone bypass pipe (55) is connected to the indoor unit (3) to store a small amount of ozone indoors, Preferably, the filter may be provided to a dust collecting filter (not shown) to perform sterilization and disinfection.

The oxygen generator 53 is configured to generate oxygen by heating ozone introduced through the ozone discharge pipe 52 by a high temperature refrigerant before being introduced into the expander 1 after being discharged from the compressor 3.

This oxygen generation is a chemical reaction that decomposes into 3O ₂ when heat is applied to ₂ O ₃ , ozone is decomposed into oxygen at room temperature, especially rapidly at a temperature of 60 ℃ or more.

Therefore, the ozone supplied to the oxygen generator 53 is decomposed into oxygen when it is heated by a high temperature refrigerant before being introduced into the expander 1 after being discharged from the compressor 3, preferably discharged from the compressor 3. And indirectly heats the ozone with the high temperature refrigerant before entering the outdoor unit 4, or indirectly heats the ozone with the high temperature refrigerant before entering the outdoor heat exchanger 40 of the outdoor unit 4 and discharged from the outdoor heat exchanger 40. Good to do.

Alternatively, considering that the surface of the compressor 3 is hot, the oxygen generator 53 may be mounted on the surface of the compressor 3 to heat ozone.

The oxygen discharge pipe 54 has a flow control valve 54a and a pump 54b, and the flow control valve 54a has a function of adjusting the flow rate of oxygen generated from the oxygen generator 53 to the room. The pump 54b has a function of supplying oxygen to the room at an appropriate pressure.

Of course, the oxygen discharge pipe 54 may be configured to store a certain amount of oxygen by being provided with a separate oxygen storage container not shown.

In addition, a portion where air is introduced into the ozone generator 51, a portion where ozone generated by the ozone generator 51 is supplied to the oxygen generator 53, and a ozone generated by the ozone generator 51 are supplied to the room. Site, the site for supplying the oxygen generated by the oxygen generator 53 to remove the foreign matter contained in the air, ozone and oxygen, and in particular to sterilize the oxygen supplied to the room as well as absorbs and removes the smell It is desirable to provide a filter that can be used.

In particular, when it is necessary to continuously supply oxygen to the room, when the outdoor unit 4 does not operate and high-temperature refrigerant is not generated, the ozone generated in the ozone generator 51 generates heat by supplying current. It may be configured to be heated by the heat generated from a heating wire (not shown) installed in the indoor unit or outdoor unit or a fuel cell provided separately. Of course, without using the heat of the refrigerant, it may be configured to supply oxygen to the room by using the above heat, this configuration has the advantage of easy installation.

The controller for supplying power to the compressor and the sensors and controlling the operation of the compressor by receiving information from the sensors is configured to use a cold / hot water production function, an ice making function, an oxygen generation function, and the like according to a user's selection.

In the refrigerant cycle system of the first embodiment having the above configuration, the refrigerant is evaporated in the indoor heat exchanger (20) of the indoor unit (2) to absorb heat from the room and flow into the compressor (3) through the refrigerant suction pipe (91). The refrigerant discharged from the compressor (3) flows into the outdoor unit (4) through the refrigerant discharge pipe (92), condenses in the outdoor heat exchanger (40), and releases heat to the outside, and discharges from the outdoor unit (4). The refrigerant is expanded while passing through the expander (1) to form a circulation cycle flowing into the indoor unit (2).

In addition, the flow control valve 93a of the auxiliary expansion pipe 93 branched between the expander 1 and the heat exchange circuit 7 is opened to have an appropriate opening degree, so that a part of the refrigerant flowing into the expander 1 is sub-expanded. After the expansion in the auxiliary expander (8) through the pipe 93 is supplied to the heat exchange circuit (7).

In addition, the flow rate control valve 97a of the high temperature refrigerant inlet pipe 97 branched from the refrigerant suction pipe 91 for receiving the refrigerant discharged from the indoor unit 2 and supplying it to the compressor 3 is opened to have an appropriate opening degree. A portion of the refrigerant flowing into (3) is supplied to the heat exchange circuit 7 through the high temperature refrigerant inlet pipe 97.

Therefore, the refrigerant introduced into the heat exchange circuit 7 is indirectly heat exchanged with the refrigerant moving from the outdoor unit 4 to the expander 1, and then flows into the refrigerant suction pipe 91 through the auxiliary refrigerant suction pipe 94 so that the indoor unit It is supplied to the compressor 3 in the state mixed with the refrigerant | coolant discharged from (2).

Then, when the pressure of the refrigerant discharged from the compressor 3 is lower than the preset pressure, the flow rate control valve 62 installed in the bypass pipe 6 is opened to have an appropriate opening degree, which is the compressor 3. Some of the refrigerant discharged from the gas is bypassed through the bypass pipe (6) and supplied to the inlet of the compressor (3), thereby increasing the temperature and pressure of the refrigerant supplied to the compressor (3) and compressed and discharged from the compressor (3). It also increases the temperature and pressure of the refrigerant.

In particular, when the pressure of the refrigerant discharged from the compressor 3 is too low, the flow rate control valve 62 installed in the bypass pipe 6 is completely opened, and at the same time, the flow path of the refrigerant supplied to the outdoor unit 4 is opened and closed. It is also possible to supply all of the refrigerant discharged from the compressor 3 to the compressor 3 again by closing the flow control valve 92b separately provided.

Of course, in such a case, when the pressure of the refrigerant discharged from the compressor 3 is increased to an appropriate level, the refrigerant flows to the original state so as to allow a normal refrigerant cycle.

In addition, when the cold water production function is selected by the user's selection, the pump 56a is operated, the flow control valve 56b is opened, and the water supplied through the water supply pipe 56 flows into the cold water manufacturing heat exchanger 22. do.

The water supplied to the cold water manufacturing heat exchanger 22 is cooled by heat exchange with the low temperature refrigerant flowing through the indoor heat exchanger 20 and then discharged through the water discharge pipe 57.

In addition, when the hot water production function is selected by the user's selection, the pump 58a is operated and the flow control valve 58b is opened to supply water supplied through the water supply pipe 58 to the heat exchanger 42 for producing hot water. do.

The water supplied to the heat exchanger 42 for producing hot water is heated by heat exchange with a high temperature refrigerant flowing through the outdoor heat exchanger 40 and then discharged through the water discharge pipe 59. In particular, the high temperature heat discarded to the outside through the outdoor heat exchanger 40 is recovered by the water flowing through the heat exchanger 42 for producing hot water.

In addition, when the ice manufacturing function is selected by the user's selection, a portion of the refrigerant discharged from the outdoor unit 4 and before entering the indoor unit 2 is transferred to the refrigerant through the first or second branch pipes 112 and 114. The refrigerant is supplied to the inlet pipe 110, and the refrigerant is expanded through the ice making expander 130 to become a low temperature low pressure refrigerant suitable for ice making, and the low temperature low pressure refrigerant passes through the ice making heat exchanger 140 to supply the water supply pipe 120. Ice is produced by freezing the water of the ice making container 150 supplied through.

Of course, the refrigerant discharged from the ice making heat exchanger 140 is supplied to the compressor 3 through the refrigerant discharge pipe 160.

In addition, when the oxygen generation function is selected by the user's selection, an appropriate amount of air is supplied to the ozone generator 51 to generate ozone, and this ozone is supplied to the oxygen generator 53 and heated by a refrigerant to generate oxygen. do. Then, the oxygen generated in this way can be supplied to the room to create a comfortable room.

In particular, if necessary, it is possible to supply a small amount of ozone generated in the ozone generator 51 to the dust collecting filter or other sterilization and disinfection of the indoor unit to prevent the propagation of bacteria to help the user's health.

2 is a configuration diagram showing a second embodiment of a refrigerant cycle system according to the present invention, wherein the refrigerant cycle system includes an expander 1 and an outdoor heat exchanger 40 for receiving and evaporating refrigerant discharged from the expander 1. Is equipped with an outdoor unit (4), a compressor (3) for receiving and compressing the refrigerant discharged from the outdoor unit (4), and an indoor unit with an indoor heat exchanger (20) for receiving and condensing the refrigerant discharged from the compressor (3). It includes (2). Of course, the inflator 1, the indoor unit 2, the compressor 3 and the outdoor unit 4 are connected by pipes and valves to form a refrigerant circulation path for heating.

In particular, the inlet and outlet of the compressor 3 are respectively connected to the refrigerant suction pipe 91 and the refrigerant discharge pipe 92 are discharged from the outdoor unit (4) of the low temperature low pressure sucked through the refrigerant suction pipe (91) The refrigerant is compressed into a refrigerant having a high temperature and high pressure, and is discharged to the indoor unit 2 through the refrigerant discharge pipe 92. The refrigerant flows into the compressor 3 into the refrigerant suction pipe 91 and the refrigerant discharge pipe 92. For example, the refrigerant suction side sensor 91a for measuring the temperature and pressure of the refrigerant and the refrigerant discharge side sensor 92a for measuring the temperature and pressure of the refrigerant discharged from the compressor 3, for example, are respectively provided. .

The refrigerant cycle system of the present exemplary embodiment is configured to connect some of the high temperature and high pressure refrigerant discharged from the compressor 3 to the compressor 3 by connecting the refrigerant suction pipe 91 and the refrigerant discharge pipe 92. It has a pass pipe (6), the bypass pipe (6) has a flow rate control valve 62 configured to open and close the flow of the refrigerant and, if necessary, to adjust the flow rate of the refrigerant, the refrigerant flow pipe 92 A check valve 64 is provided to allow only the refrigerant suction pipe 91 to prevent the refrigerant from flowing back from the refrigerant suction pipe 91 toward the refrigerant discharge pipe 92.

In addition, the refrigerant cycle system of the present embodiment has a heat exchange circuit (7) installed between the expander (1) and the indoor unit (2), the heat exchange circuit (7) is a housing 72 in which the heat exchanger (70) is built-in Has

The heat exchanger 70 provides a coolant flow path connecting the expander 1 and the indoor unit 2, and two coolant inlets 72a and 72c and a coolant discharge port 72b are formed in the housing 72. The refrigerant flowing through the refrigerant inlet (72a, 72c) is in contact with the outer surface of the heat exchanger 70 and heat exchanged with the refrigerant of the heat exchanger 70 and then discharged through the refrigerant outlet (72b) Have

In addition, the auxiliary expansion pipe (93) is branched between the expander (1) and the heat exchange circuit (7) and connected to the first refrigerant inlet (72a) of the housing (72), the auxiliary expansion pipe (93) An auxiliary expander 8 for expanding the refrigerant and a flow control valve 93a for opening and closing of the refrigerant flow and adjusting the flow rate are provided.

In addition, the other refrigerant inlet 72c of the housing 72 is connected to the high temperature refrigerant inlet pipe 97 branched from the refrigerant suction pipe 91 which receives the refrigerant discharged from the outdoor unit 4 and supplies it to the compressor 3. The high temperature refrigerant inlet pipe 97 is provided with a flow rate control valve 97a for opening and closing of the refrigerant flow and adjusting the flow rate.

In addition, the refrigerant discharge port 72b formed in the housing 72 is connected to the refrigerant suction pipe 91 through an auxiliary refrigerant suction pipe 94 so that the refrigerant and the auxiliary refrigerant suction pipe 94 of the refrigerant suction pipe 91 are closed. Refrigerants are mixed and supplied to the compressor (3). At this time, the auxiliary refrigerant suction pipe 94 is provided with an on-off valve 94a for opening and closing the refrigerant flow, the on-off valve 94a is a refrigerant from the refrigerant suction pipe (91) to the auxiliary refrigerant suction pipe (94). The check valve may be designed to prevent backflow.

In addition, a flow rate control valve 91b for opening and closing the refrigerant flow in the refrigerant suction pipe 91 and adjusting the flow rate of the refrigerant is installed, and opening and closing the refrigerant flow in the cold discharge discharge pipe 92 and, if necessary, the refrigerant. A flow rate control valve 92b for adjusting the flow rate of the gas is provided.

In addition, the refrigerant cycle system of the present embodiment includes a heat pipe 5 installed to discharge the high heat generated by the compressor 3 to the low temperature refrigerant.

In addition, the refrigerant cycle system of the present embodiment has a cold and hot water production function and an ice manufacturing function, as shown in the refrigerant cycle system of the first embodiment, and this configuration is substantially the same as that of the first embodiment, so the description of the detailed structure is omitted. do.

However, in the present embodiment, the indoor unit 2 is provided with a heat exchanger 22 for producing hot water configured to exchange heat with the high temperature refrigerant passing through the water and the indoor heat exchanger 20, the outdoor unit (4) ) Is provided with a cold water manufacturing heat exchanger (42) configured to exchange heat with the low temperature refrigerant passing through the outdoor heat exchanger (40) and discharged from the indoor unit (2) to the expander (1). A part of the refrigerant before it is introduced or a part of the refrigerant which is discharged from the expander 1 and before being introduced into the outdoor unit 4 is supplied to the ice making expander 130 through the refrigerant inlet pipe 110.

In addition, the refrigerant cycle system of this embodiment is provided with oxygen generator to supply oxygen to the room through the indoor unit 2 as shown in the refrigerant cycle system of the first embodiment, and this oxygen supply configuration is substantially the same as that of the first embodiment. Since the same, detailed description of the structure is omitted.

However, in the present embodiment, the oxygen generator 53 is installed to indirectly heat ozone with a high temperature refrigerant before being discharged from the compressor 3 and introduced into the indoor unit 2, or the indoor heat exchanger 20 of the indoor unit 2. It is installed to indirectly heat ozone with a high temperature refrigerant before being introduced into and discharged from the indoor heat exchanger 20.

In the refrigerant cycle system according to the second embodiment having the above configuration, the refrigerant is evaporated in the outdoor heat exchanger (20) of the outdoor unit (4) to absorb heat from the outside and flow into the compressor (3) through the refrigerant suction pipe (91). The refrigerant discharged from the compressor (3) flows into the indoor unit (2) through the refrigerant discharge pipe (92), condenses in the indoor heat exchanger (20), and releases heat to the room, and discharges from the indoor unit (2). The refrigerant is expanded while passing through the expander (1) to form a circulation cycle flowing into the outdoor unit (4).

In addition, the flow control valve 93a of the auxiliary expansion pipe 93 branched between the expander 1 and the heat exchange circuit 7 is opened to have an appropriate opening degree, so that a part of the refrigerant flowing into the expander 1 is sub-expanded. After the expansion in the auxiliary expander (8) through the pipe 93 is supplied to the heat exchange circuit (7).

In addition, the flow rate control valve 97a of the high temperature refrigerant inlet pipe 97 branched from the refrigerant suction pipe 91 for receiving the refrigerant discharged from the outdoor unit 4 and supplying it to the compressor 3 is opened to have an appropriate opening degree. A portion of the refrigerant flowing into (3) is supplied to the heat exchange circuit 7 through the high temperature refrigerant inlet pipe 97.

Therefore, the refrigerant introduced into the heat exchange circuit 7 is indirectly heat exchanged with the refrigerant moving from the indoor unit 2 to the expander 1, and then flows into the refrigerant suction pipe 91 through the auxiliary refrigerant suction pipe 94 to be supplied to the outdoor unit. It is supplied to the compressor 3 in the state mixed with the refrigerant | coolant discharged from (4).

Then, when the pressure of the refrigerant discharged from the compressor 3 is lower than the preset pressure, the flow rate control valve 62 installed in the bypass pipe 6 is opened to have an appropriate opening degree, which is the compressor 3. Some of the refrigerant discharged from the gas is bypassed through the bypass pipe (6) and supplied to the inlet of the compressor (3), thereby increasing the temperature and pressure of the refrigerant supplied to the compressor (3) and compressed and discharged from the compressor (3). It also increases the temperature and pressure of the refrigerant.

In particular, when the pressure of the refrigerant discharged from the compressor 3 is too low, the flow control valve 62 provided in the bypass pipe 6 is completely opened, and at the same time, the flow path of the refrigerant supplied to the indoor unit 2 is opened and closed. It is also possible to supply all of the refrigerant discharged from the compressor 3 to the compressor 3 again by closing the flow control valve 92b separately provided.

Of course, in such a case, when the pressure of the refrigerant discharged from the compressor 3 is increased to an appropriate level, the refrigerant flows to the original state so as to allow a normal refrigerant cycle.

In addition, if the cold water, hot water and ice manufacturing function is selected by the user's selection, it is possible to produce cold water, hot water and ice as described in the first embodiment. In particular, the low temperature heat discarded to the outside through the outdoor heat exchanger 40 is recovered by the water flowing through the heat exchanger 42 for manufacturing cold water.

In addition, when the oxygen generation function is selected by the user's selection, oxygen generation is possible as described in the first embodiment.

Figure 3 is a configuration diagram showing a third embodiment of the refrigerant cycle system according to the present invention, the refrigerant cycle system is an inflator (1) for expanding and discharging the refrigerant introduced at a high temperature, high pressure to a low temperature, low pressure in an insulated state, Built-in indoor heat exchanger 20, the indoor unit (2) arranged indoors, the compressor (3) for compressing and discharging the refrigerant introduced at low pressure to a high pressure in a heat insulating state, and the outdoor heat exchanger (40) built-in It includes an outdoor unit 4 disposed.

The expander 1, the indoor unit 3, the compressor 3, and the outdoor unit 4 are connected by pipes and valves to form a refrigerant circulation path for cooling and heating.

In particular, the refrigerant inlet pipe 91 and the refrigerant discharge pipe 92 are connected to the inlet and the outlet of the compressor 3, respectively, and the refrigerant suction pipe 91 and the refrigerant discharge pipe 92 are four-way valves 90. ) Is connected to the indoor unit connecting pipe 28 and the outdoor unit connecting pipe (48). The indoor unit connection pipe 28 is connected to the indoor unit 2, and the outdoor unit connection pipe 48 is connected to the outdoor unit 4.

The four-way valve (90) is discharged from the indoor unit (2) by connecting the indoor unit connecting pipe 28 and the refrigerant suction pipe (91) and the outdoor unit connecting pipe (48) and the refrigerant discharge pipe (92) by its operation. The low temperature low pressure refrigerant sucked through the refrigerant suction pipe 91 is compressed into a high temperature high pressure refrigerant and discharged to the outdoor unit 4 through the refrigerant discharge pipe 92, or the indoor unit connection pipe 28 and the refrigerant discharge pipe ( 92) and the outdoor unit connecting pipe 48 and the refrigerant suction pipe 91 are discharged from the outdoor unit 4 and the low temperature low pressure refrigerant sucked through the refrigerant suction pipe 91 is compressed into a high temperature high pressure refrigerant. The refrigerant is discharged to the indoor unit 2 through the discharge pipe 92.

In addition, the refrigerant suction pipe 91 and the refrigerant discharge pipe 92 have a refrigerant suction side sensor 91a and a compressor 3 for measuring the state of the refrigerant flowing into the compressor 3, for example, the temperature and pressure of the refrigerant. The refrigerant discharge side sensor 92a for measuring the state of the refrigerant discharged from the refrigerant, for example, the temperature and pressure of the refrigerant, is provided.

The refrigerant cycle system of the present exemplary embodiment is configured to connect some of the high temperature and high pressure refrigerant discharged from the compressor 3 to the compressor 3 by connecting the refrigerant suction pipe 91 and the refrigerant discharge pipe 92. It has a pass pipe (6), the bypass pipe (6) has a flow rate control valve 62 configured to open and close the flow of the refrigerant and, if necessary, to adjust the flow rate of the refrigerant, the refrigerant flow pipe 92 A check valve 64 is provided to allow only the refrigerant suction pipe 91 to prevent the refrigerant from flowing back from the refrigerant suction pipe 91 toward the refrigerant discharge pipe 92.

In addition, the refrigerant cycle system of the present embodiment has a first heat exchange circuit 7 ′ provided between the expander 1 and the outdoor unit 4 and a second heat exchange circuit provided between the expander 1 and the indoor unit 2. 7 ", the heat exchange circuits 7 'and 7" each have a housing 72 in which a heat exchanger 70 is incorporated.

The heat exchanger 70 of the first heat exchange circuit 7 ′ provides a refrigerant flow path connecting the expander 1 and the outdoor unit 4, and the heat exchanger 70 of the second heat exchange circuit 7 ″ is provided. A refrigerant flow path connecting the expander (1) and the indoor unit (2) is provided.

In addition, two refrigerant inlets 72a and 72c and a refrigerant outlet 72b are formed in the housing 72 of the first heat exchange circuit 7 'so that the refrigerant flowed through the refrigerant inlets 72a and 72c. Is in contact with the outer surface of the heat exchanger (70) provided in the first heat exchange circuit (7 ') and heat exchanged with the refrigerant of the heat exchanger 70 and is discharged through the refrigerant outlet (72b), In the housing 72 of the second heat exchange circuit 7 ", two refrigerant inlets 72a and 72c and a refrigerant outlet 72b are formed, thereby allowing the refrigerant introduced through the refrigerant inlets 72a and 72c to be discharged. It is in contact with the outer surface of the heat exchanger 70 provided in the two heat exchange circuit (7 ") and heat exchanged with the refrigerant of the heat exchanger 70 and has a configuration discharged through the refrigerant discharge port (72b).

A first auxiliary expansion pipe 93 'is branched between the inflator 1 and the first heat exchange circuit 7' to form a refrigerant inlet formed in the housing 72 of the first heat exchange circuit 7 '. 72 a), a second auxiliary expansion pipe 93 "is branched between the inflator 1 and the second heat exchange circuit 7" to the housing 72 of the second heat exchange circuit 7 ". It is connected to the formed refrigerant inlet (72a), the first and second auxiliary expansion pipe (93 ', 93 ") and the first and second auxiliary expander (8') (8") and the refrigerant for expanding the refrigerant Flow control valves 93a for opening and closing the flow and adjusting the flow rate are respectively installed.

In addition, the refrigerant inlet 72c formed in the housing 72 of the first heat exchange circuit 7 'receives the refrigerant discharged from the indoor unit 2 or the outdoor unit 4 through the opening / closing valve 99a. It is connected to the high temperature refrigerant inlet pipe (97) branched from the refrigerant suction pipe (91) for supplying to the refrigerant inlet (72c) formed in the housing 72 of the second heat exchange circuit (7 ") is an on-off valve (99b) It is connected to the high temperature refrigerant inlet pipe (97) through, and the high temperature refrigerant inlet pipe (97) is provided with a flow rate control valve (97a) for opening and closing of the flow of the refrigerant flow.

The refrigerant discharge port 72b formed in the housing 72 of the first heat exchange circuit 7 'is connected to the auxiliary refrigerant suction pipe 94 through an open / close valve 99e, and the second heat exchange circuit 7 " Coolant outlet 72b formed in the housing 72 of the () is connected to the auxiliary refrigerant suction pipe 94 through the on-off valve (99f).

In addition, the auxiliary refrigerant suction pipe (94) is connected to the refrigerant suction pipe (91) so that the refrigerant in the refrigerant suction pipe (91) and the refrigerant in the auxiliary refrigerant suction pipe (94) are mixed and supplied to the compressor (3). . At this time, the auxiliary refrigerant suction pipe 94 is provided with an on-off valve 94a for opening and closing the refrigerant flow, the on-off valve 94a is a refrigerant from the refrigerant suction pipe (91) to the auxiliary refrigerant suction pipe (94). The check valve may be designed to prevent backflow.

In addition, a flow rate control valve 91b for opening and closing the refrigerant flow in the refrigerant suction pipe 91 and adjusting the flow rate of the refrigerant is installed, and opening and closing the refrigerant flow in the refrigerant discharge pipe 92 and, if necessary, the refrigerant. A flow rate control valve 92b for adjusting the flow rate of the gas is provided.

In addition, the refrigerant cycle system of the present embodiment includes a heat pipe 5 installed to discharge the high heat generated by the compressor 3 to the low temperature refrigerant.

In addition, the coolant cycle system of the present embodiment has cold and hot water and ice manufacturing functions as shown in the coolant cycle system of the first embodiment, and this configuration is substantially the same as that of the first embodiment, and thus detailed description thereof will be omitted.

However, in the present embodiment, the heat exchanger 22 configured to exchange heat with the refrigerant passing through the indoor heat exchanger 20 of the indoor unit 2 produces cold water when cooling is selected and hot water when heating is selected. Has the function of manufacturing. In contrast, the heat exchanger 42 configured to exchange heat with the refrigerant passing through the outdoor heat exchanger 40 of the outdoor unit 4 has a function of producing hot water when cooling is selected and cold water when heating is selected. .

In addition, the refrigerant cycle system of this embodiment is provided with oxygen generator to supply oxygen to the room through the indoor unit 2 as shown in the refrigerant cycle system of the first embodiment, and this oxygen supply configuration is substantially the same as that of the first embodiment. Since the same, detailed description of the structure is omitted.

However, in the present embodiment, when cooling is selected, the oxygen generator 53 is installed to indirectly heat ozone with a high temperature refrigerant before being discharged from the compressor 3 and introduced into the outdoor unit 4, or It is installed to indirectly heat ozone into the high temperature refrigerant before it enters the outdoor heat exchanger 40 and is discharged from the outdoor heat exchanger 40. On the contrary, when heating is selected, the oxygen generator 53 is operated by the compressor 3. It is installed to indirectly heat ozone with the high temperature refrigerant before discharged and introduced into the indoor unit 2, or ozone as the high temperature refrigerant before entering the indoor heat exchanger 20 of the indoor unit 2 and discharged from the outdoor heat exchanger 20. Indirect heating. Preferably, in the case of having such a configuration, since the configuration has a complicated problem, a configuration in which the ozone is indirectly heated by the high temperature refrigerant discharged from the compressor 3 is preferable.

In the refrigerant cycle system of the third embodiment having such a configuration, cooling or heating is performed by a user's selection.

First, when cooling is selected, the four-way valve 90 provides a refrigerant passage so that the refrigerant discharged from the indoor unit 2 flows into the compressor 3 and the refrigerant discharged from the compressor 3 flows into the outdoor unit 4. . Then, the opening / closing valve 99c of the third connecting pipe 95C, the opening / closing valve 99b of the second connecting pipe 95B, the flow control valve 93a and the second heat exchange of the first auxiliary expansion pipe 93 '. The opening / closing valve 99f, which is responsible for opening and closing of the refrigerant discharge port 72c and the auxiliary refrigerant suction pipe 94 formed in the housing 72 of the circuit 7 ″, is closed.

In the case of such cooling, since the flow of the refrigerant and its action are the same as in the first embodiment, detailed description thereof will be omitted.

Next, when heating is selected, the four-way valve 90 provides a refrigerant passage so that the refrigerant discharged from the outdoor unit 4 flows into the compressor 3 and the refrigerant discharged from the compressor 3 flows into the indoor unit 2. do. Then, the opening / closing valve 99d of the third connecting pipe 95C, the opening / closing valve 99a of the first connecting pipe 95A, the flow control valve 93a and the first heat exchange of the second auxiliary expansion pipe 93 " The on-off valve 99e, which is responsible for opening and closing of the refrigerant discharge port 72c and the auxiliary refrigerant suction pipe 94 formed in the housing 72 of the circuit 7 ', is closed.

In the case of such heating, since the flow of the refrigerant and its action are the same as in the second embodiment, detailed description thereof will be omitted.

In addition, if the cold water, hot water and ice manufacturing function is selected by the user's selection, it is possible to produce cold water, hot water and ice as described in the first embodiment. In particular, in the case of cooling, the high temperature heat that is discarded to the outside through the outdoor heat exchanger 40 is recovered by the water flowing through the heat exchanger 42, and in the case of heating, the outside through the outdoor heat exchanger 40 The low temperature heat to be discarded by the heat exchanger 42 has the effect of being recovered.

In addition, when the oxygen generation function is selected by the user's selection, oxygen generation is possible as described in the first embodiment.

FIG. 4 shows a modification of the third embodiment of the present invention shown in FIG. 3, and the description of the same parts as in the third embodiment will be omitted and only the other parts will be described. This modification can also be applied to the first and second embodiments.

The expander of this embodiment consists of a plurality of expanders 1A and 1B arranged in series or in parallel with respect to the refrigerant path, and the indoor unit 2 includes a plurality of indoor heat exchangers 20A arranged in series or in parallel with respect to the refrigerant path. Compressor 3 is composed of a plurality of compressors 3A and 3B arranged in series or in parallel with respect to the refrigerant path, and the outdoor unit 4 is arranged in series or in parallel with respect to the refrigerant path. A plurality of outdoor heat exchangers 40A and 40B.

In addition, the first and second heat exchange circuits 7 'and 7 "each include a plurality of heat exchangers 70A and 70B arranged in series or in parallel with respect to the refrigerant path, respectively, and the first and second auxiliary expanders. 8 consists of a plurality of auxiliary expanders 8A and 8B arranged in series or in parallel with respect to the refrigerant path.

At this time, the housing 72 constituting the first heat exchange circuit (7 ') is formed with a refrigerant outlet (72b) at the site where the heat exchanger (70A) connected to the outdoor unit (4) is accommodated and the heat exchanger (connected to the expander 1) The refrigerant suction opening 72a is formed at the portion where 70B) is accommodated. In the housing 72 forming the second heat exchange circuit 7 ″, a refrigerant outlet 72b is formed at a portion where the heat exchanger 70B connected to the indoor unit 2 is accommodated, and the heat exchanger 70A connected to the expander 1. The coolant inlet 72a is formed at the portion where () is accommodated, of course, this is not intended to limit the positions of the coolant inlet and the coolant outlet, and are merely illustrative.

In addition, the refrigerant cycle system of this embodiment is provided with oxygen generator to supply oxygen to the room through the indoor unit 2 as shown in the refrigerant cycle system of the first embodiment, and this oxygen supply configuration is substantially the same as that of the third embodiment. Since the same, detailed description of the structure is omitted.

The refrigerant cycle system of the present embodiment having such a configuration can increase heat exchange, expansion, and compression capacity for the refrigerant by a plurality of components, which is not only easy to increase the capacity of the refrigerant cycle system, It is desirable to be able to reduce the load on the components.

In addition, a distributor 96 is installed at the refrigerant discharge part of the first auxiliary expander 8 ', and the refrigerant is respectively provided at the sites where the first and second heat exchangers 70A and 7B of the first heat exchange circuit 7' are accommodated. It may be configured to distribute or to selectively supply a refrigerant as needed. This structure can also be applied to the connection structure of the second auxiliary expander 8 "and the second heat exchange circuit 7".

In the case where the distributor 96 is used as described above, it is discharged from the auxiliary expanders 8 'and 8 "and flows into the heat exchange circuit 7' and 7" according to the path of the refrigerant by setting the distributor 96. By changing the refrigerant temperature and the refrigerant temperature supplied to the auxiliary refrigerant suction pipe 94, it is possible to operate the refrigerant cycle system under various conditions.

In addition, if the cold water, hot water and ice manufacturing function is selected by the user's selection, it is possible to produce cold water, hot water and ice as described in the first embodiment.

In addition, when the oxygen generation function is selected by the user's selection, oxygen generation is possible as described in the first embodiment.

As described above, according to the refrigerant cycle system having a cold / hot water production function according to the present invention, hot and cold water may be produced by indirect heat exchange between high and low temperature refrigerant and water, thereby sufficiently utilizing the heat of the high and low temperature refrigerant. There is no need for a separate device to obtain an efficient use of the interior space and has an advantageous effect in terms of economy.

1 is a circuit diagram showing a first embodiment of a refrigerant cycle system having a cold and hot water production function according to the present invention;

Figure 2 is a circuit diagram showing a second embodiment of a refrigerant cycle system having a cold and hot water production function according to the present invention;

Figure 3 is a circuit diagram showing a third embodiment of the refrigerant cycle system having a cold and hot water production function according to the present invention;

4 is a circuit diagram showing a modification to the third embodiment of the present invention.

※ Explanation of symbols about main part of drawing ※

1: expander 2: indoor unit

20: indoor heat exchanger 3: compressor

32: heat pipe 4: outdoor unit

40: outdoor heat exchanger 50: filter

51: ozone generator 52: ozone discharge pipe

53: oxygen generator 54: oxygen discharge pipe

56, 58: water supply pipe 57, 59: water discharge pipe

6: bypass piping 62: flow control valve

7: heat exchange circuit 70: heat exchanger

8: auxiliary expander 90: four-way valve

91: refrigerant suction piping 92: refrigerant discharge piping

110: refrigerant inlet pipe 120: water supply pipe

130: ice making expander 140: ice making heat exchanger

150: ice making container 160: refrigerant discharge pipe

Claims (24)

In a refrigerant cycle system configured to lower the temperature of the room, which is the cooling zone, while the refrigerant moves along a circulation path fed back to the expander through an expander, an indoor unit having an indoor heat exchanger, a compressor, and an outdoor unit having an outdoor heat exchanger. When the pressure of the refrigerant discharged from the compressor is lower than a predetermined reference pressure, a part or all of the refrigerant discharged from the compressor is supplied to the compressor again and compressed, and the refrigerant condensed in the outdoor unit flows into the expander through a heat exchange circuit. A portion of the refrigerant flowing into the expander is adiabatic expansion in the auxiliary expander, the refrigerant discharged from the auxiliary expander and the refrigerant evaporated in the indoor unit is mixed through the heat exchange circuit and supplied to the compressor, the outdoor heat exchange of the outdoor unit Hot and cold water is produced by heat exchange between the high temperature refrigerant passing through the water and the water passing through the heat exchanger for producing hot water, cold water is produced by heat exchange between the low temperature refrigerant passing through the indoor heat exchanger of the indoor unit and the water passing through the heat exchanger for producing cold water. Refrigerant cycle system with manufacturing function. The method of claim 1, wherein a portion of the refrigerant discharged from the outdoor unit and before entering the indoor unit is introduced into the ice making expander through a refrigerant inlet pipe, and the refrigerant discharged from the ice making expander flows into the compressor after passing through the ice making heat exchanger. Cooling cycle system having a cold and hot water production function, characterized in that the ice is produced by the heat exchange of the low temperature refrigerant passing through the ice making heat exchanger and the water contained in the ice making container. The ozone generator for generating ozone from air is provided, and the ozone generated by the ozone generator is received, heated by a high-temperature refrigerant discharged from the compressor, decomposed into oxygen, and then collected and sterilized. Refrigerant cycle system having a hot and cold water production function, characterized in that the oxygen generator is supplied to the indoor unit through the filter for disinfection and odor removal. The refrigerant cycle system as claimed in claim 3, wherein the ozone generator is connected to supply ozone to the indoor unit through an ozone bypass pipe having a flow control valve. The refrigerant cycle system according to claim 1 or 2, wherein the compressor has a plurality of compressors connected in series or in parallel with respect to the flow of the refrigerant. The refrigerant cycle system according to claim 1 or 2, wherein a plurality of indoor heat exchangers are connected in series or in parallel with respect to the flow of the refrigerant. The refrigerant cycle system according to claim 1 or 2, wherein a plurality of expanders are connected in series or in parallel with respect to the flow of the refrigerant. The refrigerant cycle system according to claim 1 or 2, wherein the outdoor heat exchanger is connected in series or parallel with respect to the flow of the refrigerant. A refrigerant cycle system configured to raise a temperature of a heating area of a room while a refrigerant is moved along a circulation path supplied to an expander through an expander, an outdoor unit having an outdoor heat exchanger, a compressor, and an indoor unit having an indoor heat exchanger. When the pressure of the refrigerant discharged from the compressor is lower than a predetermined reference pressure, a part or all of the refrigerant discharged from the compressor is supplied to the compressor again and compressed, and the refrigerant condensed in the indoor unit flows into the expander through a heat exchange circuit. A portion of the refrigerant flowing into the expander is adiabatic expansion in the auxiliary expander, the refrigerant discharged from the auxiliary expander and the refrigerant evaporated from the outdoor unit is mixed through the heat exchange circuit and supplied to the compressor, the outdoor heat exchange of the outdoor unit Cold water is produced by heat exchange between the low temperature refrigerant passing through the air and the water passing through the heat exchanger for cold water production, hot water is produced by heat exchange between the high temperature refrigerant passing through the indoor heat exchanger of the indoor unit and the water passing through the heat exchanger for producing hot water. Refrigerant cycle system with manufacturing function. The method of claim 9, wherein a part of the refrigerant discharged from the indoor unit and before the outdoor unit is introduced into the ice making expander through the refrigerant inlet pipe, and the refrigerant discharged from the ice making expander enters the compressor after passing through the ice making heat exchanger. Cooling cycle system having a cold and hot water production function, characterized in that the ice is produced by the heat exchange of the low-temperature refrigerant passing through the ice-making heat exchanger and the water contained in the ice-making container. The ozone generator for generating ozone from air is provided, and the ozone generated by the ozone generator is received, heated by a high temperature refrigerant discharged from the compressor, decomposed into oxygen, and then collected and sterilized. Refrigerant cycle system having a hot and cold water production function, characterized in that the oxygen generator is supplied to the indoor unit through the filter for disinfection and odor removal. 12. The refrigerant cycle system as set forth in claim 11, wherein the ozone generator is connected to supply ozone to the indoor unit through an ozone bypass pipe having a flow control valve. The refrigerant cycle system according to claim 9 or 10, wherein the compressor is connected in series or in parallel with respect to the flow of the refrigerant. The refrigerant cycle system according to claim 9 or 10, wherein the indoor heat exchanger is connected in series or in parallel with respect to the flow of the refrigerant. The refrigerant cycle system according to claim 9 or 10, wherein a plurality of expanders are connected in series or in parallel with respect to the flow of the refrigerant. The refrigerant cycle system according to claim 9 or 10, wherein the outdoor heat exchanger is connected in series or in parallel with respect to the flow of the refrigerant. The refrigerant consists of an expander, an indoor unit having an indoor heat exchanger, a compressor, and an outdoor heat exchanger. By circulating the refrigerant, an air conditioner is used to raise or lower the temperature of a room, which is a temperature control area, by using a state change of the refrigerant. In a refrigerant cycle system, When the pressure of the refrigerant discharged from the compressor is lower than a predetermined reference pressure, a part or all of the refrigerant discharged from the compressor is supplied to the compressor again and compressed, and the refrigerant condensed in the outdoor unit or the indoor unit passes through a heat exchange circuit to the expander. A portion of the refrigerant introduced into the expander is adiabaticly expanded in the auxiliary expander, and the refrigerant discharged from the auxiliary expander and the refrigerant evaporated from the indoor unit or the outdoor unit are mixed through the heat exchange circuit and supplied to the compressor. Cold water or hot water is produced by heat exchange between the refrigerant passing through the outdoor heat exchanger of the outdoor unit and the water passing through the heat exchanger, and cold water or hot water is produced by heat exchange between the refrigerant passing through the indoor heat exchanger of the indoor unit and the water passing through the heat exchanger. Between refrigerants with cold and hot water production function System. 18. The method of claim 17, wherein a part of the refrigerant discharged from the indoor unit or the outdoor unit and before the outdoor unit or the indoor unit is introduced into the ice making expander through the refrigerant inlet pipe, and the refrigerant discharged from the ice making expander passes through the ice making heat exchanger. Refrigerant cycle system having a cold and hot water production function, characterized in that the ice is produced by heat exchange between the low temperature refrigerant passing through the ice making heat exchanger and the water contained in the ice making container. 19. The method according to claim 17 or 18, wherein an ozone generator for generating ozone from air is provided, and the ozone generated in the ozone generator is received, heated by a high temperature refrigerant discharged from the compressor, decomposed into oxygen, and then collected and sterilized. Refrigerant cycle system having a hot and cold water production function, characterized in that the oxygen generator is supplied to the indoor unit through the filter for disinfection and odor removal. 20. The refrigerant cycle system as claimed in claim 19, wherein the ozone generator is connected to supply ozone to the indoor unit through an ozone bypass pipe having a flow control valve. 19. The refrigerant cycle system as claimed in claim 17 or 18, wherein a plurality of compressors are connected in series or in parallel with respect to the flow of the refrigerant. 19. The refrigerant cycle system according to claim 17 or 18, wherein the indoor heat exchangers are connected in series or in parallel with respect to the flow of the refrigerant. 19. The refrigerant cycle system as claimed in claim 17 or 18, wherein a plurality of expanders are connected in series or in parallel with respect to the flow of the refrigerant. 19. The refrigerant cycle system according to claim 17 or 18, wherein the outdoor heat exchanger is connected in series or in parallel with respect to the flow of the refrigerant.