Hybrid heating and cooling system

Abstract

The present invention relates to a hybrid heating and cooling system configured to utilize multiple heat sources, including water heat and air heat, thereby enabling a continuous supply of heat absorption sources and allowing the circulation of outdoor air and indoor air to occur simultaneously during heating and cooling. The hybrid heating and cooling system of the present invention comprises: a compressor that forms a high-temperature, high-pressure gaseous refrigerant; an indoor unit that directly receives the high-temperature, high-pressure gaseous refrigerant from the compressor and blows heat-exchanged outdoor air to the indoor side for heating, or blows heat-exchanged outdoor air to the indoor side for cooling by passing through a second expansion valve to the refrigerant; an outdoor unit that discharges the heat of evaporation generated by evaporating the refrigerant introduced from the first expansion valve to the outdoor side together with the air drawn in from the indoor side, or discharges the heat of condensation generated by condensing the high-temperature, high-pressure gaseous refrigerant directly supplied from the compressor to the outdoor side together with the air drawn in from the indoor side; and a receiver that stores the high-pressure liquid refrigerant condensed from the indoor unit or the outdoor unit that acted as a condenser. It comprises a liquid separator that separates the liquid refrigerant that has not evaporated among the refrigerants introduced from the indoor or outdoor unit acting as an evaporator, and supplies only the gaseous refrigerant to the compressor side; and further comprises a water heat exchanger that discharges the heat of evaporation generated while evaporating the refrigerant introduced from the third expansion valve through raw water passing through the pipe, or discharges the heat of condensation generated while condensing the high-temperature, high-pressure gaseous refrigerant through raw water passing through the pipe.

Description

Technology Field

[0001] The present invention relates to a hybrid heating and cooling system that enables the simultaneous supply of heating and cooling and ventilation by configuring the heating and cooling system to utilize multiple heat sources, including water heat and air heat, thereby enabling a continuous supply of heat absorption sources, and by allowing the circulation of outdoor air and indoor air during heating and cooling. Background Technology

[0003] Generally, in indoor heating and cooling processes, direct circulation between outdoor and indoor air does not occur to minimize heat loss; instead, only indirect heat exchange through pipes takes place, leading to the problem of continuous indoor air contamination as the heating and cooling time increases.

[0004] However, if ventilation is performed for this purpose, there is a problem of energy waste because the heated and cooled air inside is released to the outside, requiring heating and cooling to be performed again.

[0005] To solve the above-mentioned problem, Korean Registered Patent No. 10-1083866 (hereinafter referred to as the "prior art") has been disclosed as prior art equipped with heating, cooling, and ventilation functions.

[0006] The above prior art relates to a heat exchange ventilation system in which the cooling and heating functions are integrated, comprising: an exhaust fan that discharges indoor air introduced through an exhaust inlet to the outside through an exhaust outlet; a supply fan that discharges outdoor air introduced through a supply air inlet into the room through a supply air outlet; a heat exchanger installed on a passage connecting the exhaust inlet and the exhaust outlet and a passage connecting the supply air inlet and the supply air outlet to allow heat exchange between the air introduced through the exhaust inlet and the supply air inlet; and a heat pump including a compressor, a refrigerant switching valve that switches the circulation direction of the refrigerant compressed by the compressor according to cooling and heating, a condenser, and an evaporator, wherein the condenser is installed on a path between the heat exchanger and the exhaust fan, and the evaporator is installed on a path between the heat exchanger and the supply fan, and the condenser and evaporator exchange heat with the indoor and outdoor air that has been heat exchanged in the heat exchanger.

[0007] Although the aforementioned prior art can implement a ventilation function, since heat exchange occurs between indoor and outdoor air during ventilation, there is a risk of condensation occurring during winter when temperatures drop sharply. Furthermore, if condensation forms inside the pipes, it may obstruct the airflow or cause problems such as moisture being discharged along with the outdoor air as it enters the indoor space.

[0008] Furthermore, if the heat absorption source is composed of heat-exchanged air as in the prior art, problems such as operational failure may occur because the condensation or evaporation of the refrigerant does not take place due to a shortage of the heat absorption source.

[0009] Meanwhile, the need for ventilation to circulate indoor and outdoor air is increasing due to the problem of cooking fumes, which are identified as a cause of lung cancer among school meal workers, and the rising trend of infection cases with highly contagious diseases such as COVID-19.

[0010] Therefore, the need has arisen for a hybrid heating and cooling system that performs the same function as ventilation by circulating indoor and outdoor air simultaneously with heating and cooling, and by filtering the inhaled outdoor air and exhaled indoor air separately, thereby enabling the prevention of cooking fumes—identified as a cause of lung cancer among school cafeteria workers—and the prevention of infection from highly contagious diseases such as COVID-19. Prior art literature

[0012] Korean Registered Patent No. 10-1083866 (July 6, 2011) The problem to be solved

[0013] The present invention aims to solve the aforementioned problems, and its purpose is to provide a hybrid heating and cooling system capable of preventing cooking fumes, which are identified as a cause of lung cancer among school cafeteria workers, and preventing infection with highly contagious diseases such as COVID-19, by simultaneously circulating indoor and outdoor air for heating and cooling to function like ventilation, while filtering the inhaled outdoor air and the exhaled indoor air respectively.

[0014] In addition, another objective of the present invention is to provide a hybrid heating and cooling system configured to utilize multiple heat sources, including water heat and air heat, thereby enabling a continuous supply of heat absorption sources while allowing the circulation of outdoor and indoor air to occur simultaneously during heating and cooling.

[0015] In addition, another objective of the present invention is to provide a hybrid heating and cooling system that offers a heating and cooling function using multiple heat sources, enabling stable temperature maintenance, and capable of discharging air heated by condensation heat or providing raw water heated by condensation heat as boiler heating water. means of solving the problem

[0017] To achieve the above-mentioned objective, the hybrid heating and cooling system of the present invention comprises: a compressor (10) that forms a high-temperature, high-pressure gaseous refrigerant; an indoor unit (20) that directly receives the high-temperature, high-pressure gaseous refrigerant from the compressor (10) and blows heat-exchanged outdoor air to the indoor side for heating, or blows heat-exchanged outdoor air to the indoor side for cooling by passing through the second expansion valve (EV2); an outdoor unit (30) that discharges the heat generated by evaporating the refrigerant introduced from the first expansion valve (EV1) to the outdoor side together with the air drawn in from the indoor side, or discharges the heat generated by condensing the high-temperature, high-pressure gaseous refrigerant directly supplied from the compressor (10) to the outdoor side together with the air drawn in from the indoor side; and a receiver (40) that stores the high-pressure liquid refrigerant condensed from the indoor unit (20) acting as a condenser or the outdoor unit (30) acting as a condenser. A liquid separator (60) that separates liquid refrigerant that has not evaporated from the refrigerant flowing in from the indoor unit (20) or the outdoor unit (30) that has acted as an evaporator, and supplies only gaseous refrigerant to the compressor (10); wherein, when operating in heating mode, a first expansion valve (EV1) receives high-pressure liquid refrigerant from the receiver (40) that stores high-pressure liquid refrigerant condensed in the indoor unit (20), expands it to convert it into low-pressure liquid refrigerant, and then transmits it to the outdoor unit (30); and when operating in cooling mode, a second expansion valve (EV2) receives high-pressure liquid refrigerant from the receiver (40) that stores high-pressure liquid refrigerant condensed in the outdoor unit (30) or the heat exchanger (50), expands it to convert it into low-pressure liquid refrigerant, and then transmits it to the indoor unit (20). When the heating mode is operated, a third expansion valve (EV3) receives the high-pressure liquid refrigerant from the receiver (40) that stores the high-pressure liquid refrigerant delivered from the indoor unit (20), expands it to convert it into low-pressure liquid refrigerant, and then delivers it to the heat exchanger (50);The invention is further characterized by including a water heat exchanger (50) that discharges the heat of evaporation generated by evaporating the refrigerant introduced from the third expansion valve (EV3) through raw water passing through the pipe, or discharges the heat of condensation generated by condensing the high-temperature, high-pressure gaseous refrigerant supplied directly from the compressor (10) through raw water passing through the pipe.

[0018] Additionally, the hybrid heating and cooling system (1) is characterized by controlling the refrigerant flow so that when the heating mode is operated, the high-temperature, high-pressure gaseous refrigerant formed by compression in the compressor (10) is discharged and flows into the indoor unit (20), thereby heating the indoor side, and the high-temperature, high-pressure gaseous refrigerant flowing into the indoor unit (20) is condensed and stored in the receiver (40) in the state of high-pressure liquid refrigerant, and the high-pressure liquid refrigerant stored in the receiver (40) is converted into low-pressure liquid refrigerant by the first expansion valve (EV1), then evaporates on the outdoor unit (30) side and is converted into low-temperature, low-pressure gaseous refrigerant and transferred to the liquid separator (60), and the gaseous refrigerant from which the liquid refrigerant has been separated by the liquid separator (60) is supplied to the compressor (10).

[0019] In addition, the indoor unit (20) is characterized by having a filter and a UV sterilization device sequentially provided on the side that draws in outdoor air, so that when drawing in outdoor air, sterilization of the air is performed by the UV sterilization device after filtering by the filter.

[0020] Additionally, when the water heat usage mode is operated, the high-pressure liquid refrigerant stored in the receiver (40) is converted into low-pressure liquid refrigerant by the first expansion valve (EV1) and the third expansion valve (EV3), and the refrigerant converted into low-pressure liquid refrigerant by the third expansion valve (EV3) is evaporated on the side of the water heat exchanger (50) and converted into low-temperature low-pressure gaseous refrigerant and supplied to the side of the liquid separator (60).

[0021] In addition, the above-mentioned heat exchanger (50) is characterized by the fact that the raw water stored in the heat source water tank (52) is repeatedly supplied to and recovered by a circulation pump (P) installed on the heat supply pipe (521) to the side of the enclosure (51) which is equipped with a refrigerant pipe (511) through which the refrigerant flows, thereby causing the evaporation of low-pressure liquid refrigerant.

[0022] In addition, the hybrid heating and cooling system (1) further comprises a heat sensor (53) that measures the temperature inside the housing (51) or heat source water tank (52) of the heat exchanger (50) and transmits the measured temperature to a control unit.

[0023] In addition, the hybrid heating and cooling system (1) is characterized by automatically controlling the supply ratio of refrigerant by controlling the electronic valve when the temperature inside the enclosure (51) or heat source water tank (52) measured by the heat sensor (53) is below a temperature previously designated in the control unit, thereby reducing the ratio of refrigerant supplied to the heat exchanger (50) and increasing the ratio of refrigerant supplied to the outdoor unit (30).

[0024] Additionally, the hybrid cooling and heating system (1) is characterized by controlling the refrigerant flow so that when operating in cooling mode, high-temperature, high-pressure gaseous refrigerant formed by compression in the compressor (10) is discharged and flows into the outdoor unit (30), whereby the high-temperature, high-pressure gaseous refrigerant condenses and is converted into a high-pressure liquid refrigerant state and stored in the receiver (40), and the high-pressure liquid refrigerant stored in the receiver (40) is converted into a low-pressure liquid refrigerant by the second expansion valve (EV2), then evaporates into a low-temperature, low-pressure gaseous refrigerant on the indoor unit (20) side, thereby cooling the air around the indoor unit (20) and cooling the indoor side, after which the low-temperature, low-pressure gaseous refrigerant is transferred to the liquid separator (60), and the gaseous refrigerant from which the liquid refrigerant has been separated by the liquid separator (60) is supplied to the compressor (10).

[0025] In addition, the above-described hybrid heating and cooling system (1) is characterized in that, when operating in the heat usage mode, the high-temperature, high-pressure gaseous refrigerant formed by compression in the compressor (10) flows into the heat exchanger (50), and heat exchange is performed by the raw water flowing through the heat supply pipe (521) of the heat exchanger (50), thereby condensing the high-temperature, high-pressure gaseous refrigerant and converting it into a high-pressure liquid refrigerant state, after which it is stored in the receiver (40).

[0026] In addition, the above-mentioned heat exchanger (50) is characterized by the fact that the raw water stored in the heat source water tank (52) is repeatedly supplied to and recovered by a circulation pump (P) installed on the heat supply pipe (521) to the side of the enclosure (51) which is equipped with a refrigerant pipe (511) through which the refrigerant flows, thereby condensing of the high-temperature, high-pressure gaseous refrigerant.

[0027] Additionally, the above-described heat exchanger (50) further includes a heat sensor (53) that measures the temperature inside the heat source water tank (52) and transmits the measured temperature to a control unit, wherein if the temperature of the raw water inside the heat source water tank (52) measured by the heat sensor (53) exceeds a temperature previously designated to the control unit, the raw water inside the heat source water tank (52) is recovered and supplied as heating water to a boiler connected to the heat source water tank (52).

[0028] Additionally, the hybrid heating and cooling system (1) comprises: a first pipe (L1) connecting the compressor (10) and the first branch pipe (BP1); a second pipe (L2) connecting the first branch pipe (BP1) and the second branch pipe (BP2); a third pipe (L3) connecting the second branch pipe (BP2) and the indoor unit (20); a fourth pipe (L4) connecting the indoor unit (20) and the third branch pipe (BP3); a fifth pipe (L5) connecting the third branch pipe (BP3) and the receiver (40); a sixth pipe (L6) connecting the receiver (40) and the fourth branch pipe (BP4); a seventh pipe (L7) connecting the fourth branch pipe (BP4) and the fifth branch pipe (BP5); and an eighth pipe (L8) connecting the fifth branch pipe (BP5) and the third solenoid valve (SV3). A ninth conduit (L9) connecting the third solenoid valve (SV3) and the first expansion valve (EV1); a tenth conduit (L10) connecting the first expansion valve (EV1) and the outdoor unit (30); an eleventh conduit (L11) connecting the outdoor unit (30) and the sixth branch conduit (BP6); a twelfth conduit (L12) connecting the sixth branch conduit (BP6) and the fifth solenoid valve (SV5); a thirteenth conduit (L13) connecting the fifth solenoid valve (SV5) and the eighth branch conduit (BP8); a fourteenth conduit (L14) connecting the eighth branch conduit (BP8) and the twelveth branch conduit (BP12); and a fifteenth conduit (L15) connecting the fourth branch conduit (BP4) and the sixth solenoid valve (SV6). A 16th conduit (L16) connecting the 6th solenoid valve (SV6) and the 3rd expansion valve (EV3); a 17th conduit (L17) connecting the 3rd expansion valve (EV3) and the 9th branch conduit (BP9); an 18th conduit (L18) connecting the heat exchanger (50) connected to the 9th branch conduit (BP9) and the 7th branch conduit (BP7); a 19th conduit (L19) connecting the 7th branch conduit (BP7) and the 8th solenoid valve (SV8); and a 20th conduit (L20) connecting the 8th solenoid valve (SV8) and the 8th branch conduit (BP8).A 21st conduit (L21) connecting the 1st branch conduit (BP1) and the 10th branch conduit (BP10); a 22nd conduit (L22) connecting the 10th branch conduit (BP10) and the 6th branch conduit (BP6); a 23rd conduit (L23) connecting the outdoor unit (30) and the 11th branch conduit (BP11); a 24th conduit (L24) connecting the 10th branch conduit (BP10) and the 7th branch conduit (BP6); a 25th conduit (L25) connecting the 9th branch conduit (BP9) and the 11th branch conduit (BP11); a 26th conduit (L26) connecting the 11th branch conduit (BP11) and the 3rd branch conduit (BP3); a 27th conduit (L27) connecting the 5th branch conduit (BP5) and the 9th solenoid valve (SV9); It is characterized by comprising: a 28th conduit (L28) connecting the 9th solenoid valve (SV9) and the 2nd expansion valve (EV2); a 29th conduit (L29) connecting the 2nd expansion valve (EV2) and the indoor unit (20); a 30th conduit (L30) connecting the 2nd branch conduit (BP2) and the 12th branch conduit (BP12); a 31st conduit (L31) connecting the 12th branch conduit (BP12) and the liquid separator (60); and a 32nd conduit (L32) connecting the liquid separator (60) and the compressor (10).

[0029] Additionally, when the hybrid heating and cooling system (1) operates in heating mode, high-temperature, high-pressure gaseous refrigerant formed by compression in the compressor (10) is discharged to the first conduit (L1). The high-temperature, high-pressure gaseous refrigerant discharged to the first conduit (L1) flows into the indoor unit (20) through the second conduit (L2) as the first electronic valve (SV1) opens. When the temperature of the air surrounding the indoor unit rises due to the high-temperature, high-pressure gaseous refrigerant flowing into the indoor unit (20), the air with the increased temperature is blown into the indoor unit using a blower to heat the indoor unit. The high-temperature, high-pressure gaseous refrigerant flowing into the indoor unit (20) is converted into a high-pressure liquid refrigerant state as it condenses due to the air surrounding the indoor unit. The high-pressure liquid refrigerant then travels along the fourth conduit (L4) and the fifth conduit (L5) and is temporarily stored in the receiver (40), after which the uncondensed gaseous refrigerant is separated, and the high-pressure liquid refrigerant stored in the receiver (40) The refrigerant moves sequentially along the 6th conduit (L6), the 7th conduit (L7), and the 8th conduit (L8), then moves along the opened 3rd solenoid valve (SV3) and the 9th conduit (L9), and the high-pressure liquid refrigerant is converted into low-pressure liquid refrigerant by the 1st expansion valve (EV1) and then supplied to the outdoor unit (30) through the 10th conduit (L10), and the high-pressure liquid refrigerant supplied to the outdoor unit (30) evaporates on the outdoor unit (30) side and is converted into low-temperature low-pressure gaseous refrigerant, and then the low-temperature low-pressure gaseous refrigerant converted by evaporating by the outdoor unit (30) acting as an evaporator moves sequentially through the 12th conduit (L12), the 13th conduit (L13), and the 14th conduit (L14), and then is delivered to the liquid separator (60) side through the 12th branch conduit (BP12) and the 31st conduit (L31), and the The liquid phase refrigerant that has not evaporated is separated from the low-temperature, low-pressure gaseous refrigerant delivered to the liquid separator (60), and the gaseous refrigerant from which the liquid phase refrigerant has been separated is supplied to the compressor (10) along the 32nd pipe (L32) in a manner that controls the refrigerant flow during heating.

[0030] Additionally, the hybrid heating and cooling system (1) is characterized in that, when operating in the heat usage mode, the high-pressure liquid refrigerant stored in the receiver (40) moves sequentially along the 6th conduit (L6) and the 15th conduit (L15), then moves along the opened 6th solenoid valve (SV6) and the 16th conduit (L16), and the high-pressure liquid refrigerant is converted into low-pressure liquid refrigerant by the 3rd expansion valve (EV3) and then supplied to the outdoor unit (30) through the 10th conduit (L10).

[0031] Additionally, when the hybrid cooling and heating system (1) operates in cooling mode, the high-temperature, high-pressure gaseous refrigerant formed by compression in the compressor (10) is discharged to the first conduit (L1), and then flows into the outdoor unit (30) side through the 21st conduit (L21), the 22nd conduit (L22), and the 11th conduit (L11) according to the opening of the second solenoid valve (SV2) and the 4th solenoid valve (SV4). The high-temperature, high-pressure gaseous refrigerant flowing into the outdoor unit (30) side is condensed by the outdoor unit (30) acting as a condenser and converted into a high-pressure liquid refrigerant state, and then sequentially moves through the 25th conduit (L25), the 26th conduit (L26), and the 5th conduit (L5) to be delivered to the receiver (40) side, and the high-pressure liquid refrigerant flowing into the receiver (40) is then, according to the opening of the 9th solenoid valve (SV9), the 6th The low-pressure liquid refrigerant is sequentially transmitted through pipe (L6), pipe 7 (L7), pipe 27 (L27), and pipe 28 (L28) to the second expansion valve (EV2), converted into low-pressure liquid refrigerant by the second expansion valve (EV2), and then supplied to the indoor unit (20) via pipe 29 (L29). When the low-pressure liquid refrigerant supplied to the indoor unit (20) evaporates into low-temperature, low-pressure gaseous refrigerant by the indoor unit (20) acting as an evaporator and the air around the indoor unit (20) is cooled, the indoor side is cooled by blowing the cooled air around the indoor unit (20) to the indoor side by a blower. The low-temperature, low-pressure gaseous refrigerant evaporated in the indoor unit (20) sequentially moves through pipe 3 (L3), pipe 30 (L30), and pipe 31 (L31) to be transmitted to the liquid separator (60), and then transmitted by the liquid separator (60). The refrigerant is characterized by the separation of unevaporated liquid refrigerant and the circulation of only the gaseous refrigerant from which the liquid refrigerant has been separated, so that the refrigerant flow is controlled during cooling by supplying it to the compressor (10) along the 32nd conduit (L32).

[0032] Additionally, the hybrid heating and cooling system (1) is characterized in that, when the water heat usage mode is operated, the high-temperature, high-pressure gaseous refrigerant discharged from the compressor (10) moves sequentially through the 21st conduit (L21), the 24th conduit (L24), and the 18th conduit (L18) in accordance with the opening of the 7th electronic valve (SV7) and flows into the water heat exchanger (50), and heat exchange is performed by the raw water flowing through the water heat supply pipe (521), causing the high-temperature, high-pressure gaseous refrigerant to condense and be converted into a high-pressure liquid refrigerant state, after which it moves sequentially through the 9th branch conduit (BP9), the 25th conduit (L25), the 26th conduit (L26), and the 5th conduit (L5) and is stored in the receiver (40).

[0033] In addition, the expansion valve used in the above-described hybrid heating and cooling system (1) is characterized by having an inlet through which refrigerant is introduced through a plurality of pipes, a housing that accommodates an expansion section for expanding the refrigerant, and an outlet formed by a single pipe section for discharging the refrigerant expanded in the expansion section. Effects of the invention

[0035] According to the present invention, indoor and outdoor air circulation is performed simultaneously with heating and cooling to function like ventilation, and by filtering the inhaled outdoor air and the exhaled indoor air respectively, it is possible to prevent cooking fumes, which are identified as a cause of lung cancer among school meal workers, and to prevent infection with highly contagious diseases such as COVID-19.

[0036] In addition, by configuring the heating and cooling system to utilize multiple heat sources, including water heat and air heat, it is possible to provide a continuous supply of heat absorption sources, and by allowing the circulation of outdoor and indoor air to occur simultaneously during heating and cooling, it is possible to provide a ventilation function that expels contaminated indoor air to the outside and draws filtered outdoor air into the indoor space.

[0037] In addition, the present invention provides a heating and cooling function using multiple heat sources, which enables stable temperature maintenance and has the effect of discharging air heated by condensation heat or providing raw water heated by condensation heat as boiler heating water. Brief explanation of the drawing

[0039] FIG. 1 is a schematic diagram of a hybrid heating and cooling system according to an embodiment of the present invention. FIG. 2 is an example diagram of air source heating of FIG. 1 according to an embodiment of the present invention. FIG. 3 is an exemplary diagram of the combined heat heating of FIG. 1 according to an embodiment of the present invention. FIG. 4 is an example diagram of the hot water supply of FIG. 1 of an embodiment of the present invention. FIG. 5 is an example diagram of the air source cooling of FIG. 1 of an embodiment of the present invention. FIG. 6 is an example diagram of the combined heat cooling of FIG. 1 according to an embodiment of the present invention. FIG. 7 is an exploded example diagram of an expansion valve of an embodiment of the present invention. FIG. 8 is an assembled cross-sectional view of FIG. 8 of an embodiment of the present invention. Specific details for implementing the invention

[0040] A hybrid heating and cooling system according to a preferred embodiment of the present invention will be described in detail below with reference to the attached drawings.

[0041] The terms used herein are not intended to limit the technology described in this document to specific embodiments, and it is preferable to understand that they include various modifications, equivalents, and substitutions of said embodiments.

[0042] Terms such as "first" or "second" used in describing the present invention are intended to distinguish one component from another component of a similar form, and the use of such terms does not limit the scope of the rights.

[0043] When describing the present invention, unless otherwise indicated, it is preferable to understand that the expression 'A or B' may be used selectively as either A or B, or as A and B together.

[0044] The drawings used to describe the invention may contain exaggerated or omitted parts to facilitate the easy identification of the features of the invention, and this does not limit specific embodiments of the invention.

[0045] In addition, when a specific direction (up, down, left, right, vertical, horizontal, inward, outward, etc.) is specified in the description of the present invention, it should be understood that such description is merely for the purpose of explaining specific examples to facilitate explanation and aid understanding, and does not limit or restrict a specific configuration or specific embodiment.

[0047] As illustrated in FIG. 1, the hybrid heating and cooling system (1) of the present invention comprises: a compressor (10) that compresses supplied and charged refrigerant to form high-temperature, high-pressure gaseous refrigerant; an indoor unit (20) that directly receives high-temperature, high-pressure gaseous refrigerant from the compressor (10) and blows heat-exchanged outdoor air to the indoor side for heating, or blows heat-exchanged outdoor air to the indoor side for cooling by passing through a second expansion valve (EV2); an outdoor unit (30) that discharges evaporation heat generated by evaporating the refrigerant introduced from the first expansion valve (EV1) to the outdoor side together with air drawn in from the indoor side, or discharges condensation heat generated by condensing the high-temperature, high-pressure gaseous refrigerant directly supplied from the compressor (10) to the outdoor side together with air drawn in from the indoor side; and a receiver (40) that stores high-pressure liquid refrigerant condensed from the indoor unit (20) acting as a condenser or the outdoor unit (30) acting as a condenser. A liquid separator (60) that separates liquid refrigerant that has not evaporated from the refrigerant flowing in from the indoor unit (20) or the outdoor unit (30) that has acted as an evaporator, and supplies only gaseous refrigerant to the compressor (10); wherein, when operating in heating mode, a first expansion valve (EV1) receives high-pressure liquid refrigerant from the receiver (40) that stores high-pressure liquid refrigerant condensed in the indoor unit (20), expands it to convert it into low-pressure liquid refrigerant, and then transmits it to the outdoor unit (30); and when operating in cooling mode, a second expansion valve (EV2) receives high-pressure liquid refrigerant from the receiver (40) that stores high-pressure liquid refrigerant condensed in the outdoor unit (30) or the heat exchanger (50), expands it to convert it into low-pressure liquid refrigerant, and then transmits it to the indoor unit (20). When the heating mode is operated, a third expansion valve (EV3) receives the high-pressure liquid refrigerant from the receiver (40) that stores the high-pressure liquid refrigerant delivered from the indoor unit (20), expands it to convert it into low-pressure liquid refrigerant, and then delivers it to the heat exchanger (50);The apparatus further comprises a water heat exchanger (50) that discharges the heat generated by evaporating the refrigerant introduced from the third expansion valve (EV3) through raw water passing through the pipe, or discharges the heat generated by condensing the high-temperature, high-pressure gaseous refrigerant supplied directly from the compressor (10) through raw water passing through the pipe; wherein the opening and closing of the electronic valves provided on each pipe is controlled according to a mode input to the control unit, and through such control of the opening and closing of the electronic valves, the refrigerant is circulated to the indoor unit (20) or outdoor unit (30) that selectively performs the function of a condenser or an evaporator, thereby enabling cooling or heating.

[0048] Here, each expansion valve (EV1, EV2, EV3) used in the hybrid heating and cooling system (1) of the present invention is preferably configured such that, as shown in FIGS. 7 and 8, it has an inlet through which refrigerant is introduced through a plurality of pipes, a housing that contains an expansion section for expanding the refrigerant, and an outlet formed by a single pipe section for discharging the refrigerant expanded in the expansion section, so as to be configured to allow for the adjustment of the amount of evaporation according to the conditions of the air heat source and the water heat source.

[0049] Additionally, the expansion valves (EV1, EV2, EV3) may be configured such that, as needed, a suction groove into which refrigerant introduced from an inlet is sucked, and a discharge hole formed smaller than the diameter of the suction groove to discharge the refrigerant introduced from the suction groove are each formed, so that the refrigerant discharged from the discharge hole is discharged through a discharge port formed as a single pipe section, and the suction grooves may be formed in 2 to 4 numbers so that multiple pipes can be simultaneously connected to one expansion valve (EV1, EV2, EV3).

[0051] To explain the configuration of the above-described hybrid heating and cooling system (1) in more detail, the first conduit (L1) through which the refrigerant compressed from the compressor (10) is discharged is a conduit in which a first branch conduit (BP1) is installed. On the discharge direction side of the first branch conduit (BP1), a second conduit (L2) in which a first solenoid valve (SV1) that opens during heating mode and a 21st conduit (L21) in which a second solenoid valve (SV2) that opens during cooling mode are respectively configured, thereby allowing the direction in which the refrigerant compressed from the compressor (10) moves to be controlled according to the operation of the heating mode or cooling mode. That is, the first solenoid valve (SV1) is installed so that the second conduit (L2) connected to the indoor unit (20) opens when it is operated, and the second solenoid valve (SV2) is installed so that the 21st conduit (L21) connected to the outdoor unit (30) opens when it is operated.

[0052] Additionally, the indoor unit (20) is configured to supply refrigerant to the liquid separator (60) connected to the 12th branch pipe (BP12) and the 31st pipe (L31) by controlling the flow of refrigerant to the 30th pipe (L30) connected to the 2nd branch pipe (BP2) which is opened by the 10th electronic valve (SV10), by discharging the refrigerant introduced from the 2nd pipe (L2) side to the 4th pipe (L4) side by opening the 1st electronic valve (SV1), or discharging the refrigerant introduced from the 29th pipe (L29) side connected to the 2nd expansion valve (EV2) to the 3rd pipe (L3).

[0053] Here, the fourth conduit (L4) is connected to the third branch conduit (BP3) which joins the 26th conduit (L26) through which the refrigerant discharged from the outdoor unit (30) or water heat exchanger (50) to be described later travels. It is preferable that the fourth conduit (L4) or the 17th conduit (L17) each have a check valve installed on the upstream side of the third branch conduit (BP3) to prevent the refrigerant from flowing back toward the indoor unit (20), the outdoor unit (30), or the water heat exchanger (50).

[0054] In addition, a check valve is provided on the second conduit (L2) to prevent the refrigerant flowing from the third conduit (L3) from flowing back toward the second conduit (L2), and it is preferable that the check valve be installed on the upstream side of the second branch conduit (BP2).

[0055] The above-mentioned fifth conduit (L5) is a conduit that interconnects the third branch conduit (BP3) and one side of the receiver (40), allowing refrigerant introduced from the indoor unit (20) side to be stored in the receiver (40), and the receiver (40) discharges the stored refrigerant so that it flows to the fourth branch conduit (BP4) side through the sixth conduit (L6) connected to the other side of the receiver (40).

[0056] At this time, the refrigerant flowing toward the 4th branch pipe (BP4) may be controlled to flow toward the 15th pipe (L15) connecting the 4th branch pipe (BP4) and the 6th solenoid valve (SV6), or toward the 7th pipe (L7) connecting the 4th branch pipe (BP4) and the 5th branch pipe (BP5), depending on whether the solenoid valves opened by the control unit are opened or closed. Additionally, the refrigerant that has moved through the 7th pipe (L7) to the 5th branch pipe (BP5) may be controlled to flow toward the 8th pipe (L8) connecting the 5th branch pipe (BP5) and the 3rd solenoid valve (SV3), or toward the 27th pipe (L27) connecting the 5th branch pipe (BP5) and the 9th solenoid valve (SV9).

[0057] Here, it is desirable for heating and cooling efficiency and smooth flow of refrigerant to control the third solenoid valve (SV3) and the sixth solenoid valve (SV6) to open only when operating in heating mode, and the ninth solenoid valve (SV9) to open only when operating in cooling mode, but is not necessarily limited thereto.

[0058] That is, in the hybrid heating and cooling system (1) of the present invention, the refrigerant supplied to the fourth branch pipe (BP4) can flow through one or both selected pipes among the 15th pipe (L15) connecting the fourth branch pipe (BP4) and the 6th solenoid valve (SV6) or the 7th pipe (L7) connecting the fourth branch pipe (BP3) and the 5th branch pipe (BP5), and is controlled so that the refrigerant can flow only through one selected pipe among the 8th pipe (L8) connecting the 5th branch pipe (BP5) and the 3rd solenoid valve (SV3) or the 27th pipe (L27) connecting the 5th branch pipe (BP5) and the 9th solenoid valve (SV9). At this time, the opening of the 15th conduit (L15) is controlled by the 6th solenoid valve (SV6), the opening of the 8th conduit (L8) is controlled by the 3rd solenoid valve (SV3), and the opening of the 27th conduit (SV27) is controlled by the 9th solenoid valve (SV9).

[0059] To explain in more detail the flow of refrigerant supplied to the 8th conduit (L8), 15th conduit (L15), or 27th conduit (L27) as an example, the refrigerant supplied to the 8th conduit (L8) by the opening of the 3rd solenoid valve (SV3) moves to the 1st expansion valve (EV1) side through the 9th conduit (L9) connecting the 3rd solenoid valve (SV3) and the 1st expansion valve (EV1), expands, and then is controlled so that the refrigerant flows to the outdoor unit (30) side through the 10th conduit (L10) connecting the 1st expansion valve (EV1) and the outdoor unit (30).

[0060] At this time, the outdoor unit (30) is configured such that the 11th conduit (L11), through which the refrigerant introduced through the 10th conduit (L10) is discharged, and the 23rd conduit (L23), through which the refrigerant introduced through the 11th conduit (L11) is discharged, are respectively connected. The 11th conduit (L11) is configured to discharge the refrigerant introduced through the 10th conduit (L10) toward the 6th branch conduit (BP6), and the 23rd conduit (L23) is configured to be connected to the 11th branch conduit (BP11).

[0061] In addition, the refrigerant introduced through the 10th conduit (10) is controlled to flow sequentially through the 11th conduit (L11), the 6th branch conduit (BP6), the 12th conduit (L12), the 13th conduit (L13), the 8th branch conduit (BP8), and the 14th conduit (L14) toward the 12th branch conduit (BP12).

[0062] Alternatively, the refrigerant supplied to the 15th conduit (L15) by the opening of the 6th solenoid valve (SV6) is controlled to move to the 3rd expansion valve (EV3) side through the 16th conduit (L16) connecting the 6th solenoid valve (SV6) and the 3rd expansion valve (EV3), expand, and then flow to the heat exchanger (50) side through the 17th conduit (L17) connecting the 3rd expansion valve (EV3) and the heat exchanger (50).

[0063] At this time, the 17th pipe (L17) is connected to one end of the refrigerant pipe (511) installed inside the water heat exchanger (50) so that heat exchange can be performed between the refrigerant flowing through the refrigerant pipe (511) and the raw water flowing through the heat supply pipe (521) supplied from the heat source water tank (52). The other end of the refrigerant pipe (511) is connected to the 18th pipe (L18) which interconnects the water heat exchanger (50) and the 7th branch pipe (BP7), thereby controlling the flow of refrigerant so that the refrigerant, which has been evaporated by heat exchange in the water heat exchanger (50), moves toward the 7th branch pipe (BP7), and then sequentially moves toward the 20th pipe (L20), the 8th branch pipe (BP8), and the 14th pipe (L14) according to the opening of the 8th solenoid valve (SV8) to flow toward the 12th branch pipe (BP12).

[0064] That is, it is preferable to understand that the evaporation of the low-pressure liquid refrigerant through the above-mentioned heat exchanger (50) is achieved through heat exchange that occurs as the supply and recovery of raw water stored in the heat source water tank (52) are repeated to the side of the enclosure (51) equipped with a refrigerant pipe (511) through which the refrigerant flows by a circulation pump (P) installed on the heat supply pipe (521).

[0065] Alternatively, the refrigerant supplied to the 27th conduit (L27) by the opening of the 9th solenoid valve (SV9) moves to the 2nd expansion valve (EV2) side through the 28th conduit (L28) connecting the 9th solenoid valve (SV9) and the 2nd expansion valve (EV2), expands, and then is controlled so that the refrigerant flows to the indoor unit (20) side through the 16th conduit (L29) connecting the 2nd expansion valve (EV2) and the indoor unit (20).

[0066] At this time, the refrigerant evaporated on the side of the indoor unit (20) is discharged from the indoor unit (20) through the third pipe (L3) connecting the indoor unit (20) and the second branch pipe (BP2), and is configured to flow to the side of the 12th branch pipe (BP12) through the 30th pipe (L30) in accordance with the opening of the 10th electronic valve (SV10).

[0067] In the above description, the refrigerant flowing into the 12th branch pipe (BP12) through the 30th pipe (L30) or the 14th pipe (L14) may be supplied to the liquid separator (60) through the 31st pipe connecting the 12th branch pipe (BP12) and the liquid separator (60), but if necessary, the pipes may be configured so that the 30th pipe (L30) or the 14th pipe (L14) are each directly connected to the liquid separator (60) to supply the refrigerant.

[0068] Here, a suction filter (SF) is further installed on the 31st conduit (L31) to remove solid foreign substances from the refrigerant flowing through the conduit and then supply it to the liquid separator (60), thereby enabling smooth gas-liquid separation through the liquid separator.

[0069] That is, the liquid separator (60) is configured to separate the liquid refrigerant from the refrigerant supplied through the 31st conduit (L31) and allow only the gaseous refrigerant to circulate to the compressor (10) through the 32nd conduit (L32) connected to the other side.

[0070] As seen in the above description, the pipe configuration of the hybrid heating and cooling system (1) of the present invention comprises: a first pipe (L1) connecting the compressor (10) and the first branch pipe (BP1); a second pipe (L2) connecting the first branch pipe (BP1) and the second branch pipe (BP2); a third pipe (L3) connecting the second branch pipe (BP2) and the indoor unit (20); a fourth pipe (L4) connecting the indoor unit (20) and the third branch pipe (BP3); a fifth pipe (L5) connecting the third branch pipe (BP3) and the receiver (40); a sixth pipe (L6) connecting the receiver (40) and the fourth branch pipe (BP4); and a seventh pipe (L7) connecting the fourth branch pipe (BP4) and the fifth branch pipe (BP5). An 8th conduit (L8) connecting the 5th branch conduit (BP5) and the 3rd solenoid valve (SV3); a 9th conduit (L9) connecting the 3rd solenoid valve (SV3) and the 1st expansion valve (EV1); a 10th conduit (L10) connecting the 1st expansion valve (EV1) and the outdoor unit (30); an 11th conduit (L11) connecting the outdoor unit (30) and the 6th branch conduit (BP6); a 12th conduit (L12) connecting the 6th branch conduit (BP6) and the 5th solenoid valve (SV5); a 13th conduit (L13) connecting the 5th solenoid valve (SV5) and the 8th branch conduit (BP8); and a 14th conduit (L14) connecting the 8th branch conduit (BP8) and the 12th branch conduit (BP12). A 15th pipe (L15) connecting the 4th branch pipe (BP4) and the 6th solenoid valve (SV6); a 16th pipe (L16) connecting the 6th solenoid valve (SV6) and the 3rd expansion valve (EV3); a 17th pipe (L17) connecting the 3rd expansion valve (EV3) and the 9th branch pipe (BP9); an 18th pipe (L18) connecting the heat exchanger (50) connected to the 9th branch pipe (BP9) and the 7th branch pipe (BP7); a 19th pipe (L19) connecting the 7th branch pipe (BP7) and the 8th solenoid valve (SV8); and a 20th pipe (L20) connecting the 8th solenoid valve (SV8) and the 8th branch pipe (BP8).A 21st conduit (L21) connecting the 1st branch conduit (BP1) and the 10th branch conduit (BP10); a 22nd conduit (L22) connecting the 10th branch conduit (BP10) and the 6th branch conduit (BP6); a 23rd conduit (L23) connecting the outdoor unit (30) and the 11th branch conduit (BP11); a 24th conduit (L24) connecting the 10th branch conduit (BP10) and the 7th branch conduit (BP6); a 25th conduit (L25) connecting the 9th branch conduit (BP9) and the 11th branch conduit (BP11); a 26th conduit (L26) connecting the 11th branch conduit (BP11) and the 3rd branch conduit (BP3); a 27th conduit (L27) connecting the 5th branch conduit (BP5) and the 9th solenoid valve (SV9); It comprises: a 28th conduit (L28) connecting the 9th solenoid valve (SV9) and the 2nd expansion valve (EV2); a 29th conduit (L29) connecting the 2nd expansion valve (EV2) and the indoor unit (20); a 30th conduit (L30) connecting the 2nd branch conduit (BP2) and the 12th branch conduit (BP12); a 31st conduit (L31) connecting the 12th branch conduit (BP12) and the liquid separator (60); and a 32nd conduit (L32) connecting the liquid separator (60) and the compressor (10).

[0072] The hybrid heating and cooling system (1) configured as described above will be described in detail below with reference to FIGS. 2 to 6 regarding the refrigerant flow in the heating mode and the refrigerant flow in the cooling mode.

[0073] As shown in FIGS. 2 to 3, when the hybrid heating and cooling system (1) operates in heating mode, high-temperature, high-pressure gaseous refrigerant formed by compression in the compressor (10) is discharged to the first conduit (L1).

[0074] The high-temperature, high-pressure gaseous refrigerant installed on the first conduit (L1) side flows into the indoor unit (20) side through the second conduit (L2) and the third conduit (L3) as the first solenoid valve (SV1) opens, and when the temperature of the air sucked in from the outside side rises due to the high-temperature, high-pressure gaseous refrigerant flowing into the indoor unit (20), the indoor space can be heated by using a blower to blow the air with the raised temperature into the indoor space.

[0075] Here, it is preferable to use a Sirocco fan configured to draw in outdoor air and discharge it into the room as the fan constituting the indoor unit (20). By sequentially providing a filter and a UV sterilization device on the side drawing in outdoor air, the indoor air can be prevented by allowing sterilization of the air by the UV sterilization device to occur after filtering by the filter when drawing in outdoor air.

[0076] It is preferable to use a filter made of synthetic fibers made of non-woven fabric so as to prevent the entry of viruses, etc. If necessary, a pre-filter may be used to filter foreign substances first, and then a filter made of synthetic fibers made of non-woven fabric may be used to filter fine substances, microorganisms, viruses, etc. secondarily, and then an air sterilization process may be performed using the UV sterilization device.

[0077] Additionally, the high-temperature, high-pressure gaseous refrigerant introduced into the indoor unit (20) is converted into a high-pressure liquid refrigerant state by condensing with the air surrounding the indoor unit, and the high-pressure liquid refrigerant moves along the fourth conduit (L4) and the fifth conduit (L5) and is temporarily stored in the receiver (40), after which the uncondensed gaseous refrigerant is separated and only the high-pressure liquid refrigerant is discharged to the sixth conduit (L6).

[0078] The high-pressure liquid refrigerant stored in the receiver (40) is controlled by the opening of the third solenoid valve (SV3) or the sixth solenoid valve (SV6) according to the mode setting input to the control unit. Specifically, when only the heating mode is input, only the third solenoid valve (SV3) is opened, and when the heat usage mode is input together, the third solenoid valve (SV3) and the sixth solenoid valve (SV6) are opened together so that the refrigerant is distributed and supplied in a 5:5 ratio.

[0079] Here, it should be understood that the refrigerant supply rate can be set differently depending on the degree of opening of the electronic valve, and that this varies according to the degree of valve opening and closing preset in the control unit.

[0080] First, when only the heating mode is input to the control unit, the third electronic valve (SV3) is opened, and the high-pressure liquid refrigerant stored in the receiver (40) passes sequentially through the sixth pipe (L6), the seventh pipe (L7), the eighth pipe (L8), and the ninth pipe (L9), is converted into low-pressure liquid refrigerant at the first expansion valve (EV1), and then is supplied to the outdoor unit (30) along the tenth pipe (L10).

[0081] The low-pressure liquid refrigerant supplied to the outdoor unit (30) is converted into a low-temperature, low-pressure gaseous refrigerant by evaporating through heat exchange with indoor air drawn in by the intake action of the outdoor unit (30) acting as an evaporator, and then, in accordance with the opening of the fifth solenoid valve (SV5), it sequentially moves through the 11th conduit (L11), the 6th branch conduit (BP6), the 12th conduit (L12), the 13th conduit (L13), the 8th branch conduit (BP8), and the 14th conduit (L14) and is delivered to the liquid separator (60) side through the 12th branch conduit (BP12).

[0082] Here, it is preferable to use a Sirocco fan configured to draw in indoor air and discharge it to the outside for the fan constituting the outdoor unit (30), and ventilation is achieved simultaneously with heating and cooling as outdoor air and indoor air circulate through the configuration of the indoor unit (20) and the outdoor unit (30).

[0083] Alternatively, when the heating mode and the water heat usage mode are input together, the 6th solenoid valve (SV6) is opened simultaneously with the operation performed when the heating mode is input, and the high-pressure liquid refrigerant stored in the receiver (40) is distributed according to the degree of opening of the 3rd solenoid valve (SV3) and the 6th solenoid valve (SV6) and supplied into the conduit. The refrigerant supplied according to the opening of the 6th solenoid valve (SV6) moves sequentially through the 6th conduit (L6), the 15th conduit (L15), and the 16th conduit (L16), is converted into low-pressure liquid refrigerant at the 3rd expansion valve (EV3), and then is supplied to the water heat exchanger (50) along the 17th conduit (L17).

[0084] The low-pressure liquid refrigerant supplied to the above-mentioned heat exchanger (50) moves along the refrigerant pipe (511), evaporates through heat exchange with the raw water flowing through the heat supply pipe (521), and is converted into a low-temperature, low-pressure gaseous refrigerant. Then, upon opening of the 8th solenoid valve (SV8), it sequentially moves through the 18th pipe (L18), the 7th branch pipe (BP7), the 19th pipe (L19), the 20th pipe (L20), the 8th branch pipe (BP8), and the 14th pipe (L14), and is delivered to the liquid separator (60) side through the 12th branch pipe (BP12).

[0085] In addition, a heat source water tank (52) of the heat exchanger (50) may be further installed to measure the temperature inside the heat source water tank (52) and transmit the measured temperature to the control unit. When the temperature inside the heat source water tank (52) measured by the heat source water sensor (53) is lower than the temperature previously set in the control unit, an electronic valve (SV3, SV6) that controls the flow of refrigerant to the outdoor unit (30) acting as an evaporator or to the heat exchanger (50) may be controlled to reduce the ratio of refrigerant supplied to the heat exchanger (50) and increase the ratio of refrigerant supplied to the outdoor unit (30), thereby allowing the supply ratio of refrigerant to be automatically controlled.

[0086] Through the above process, the low-temperature, low-pressure gaseous refrigerant converted by evaporation by the outdoor unit (30) or water heat exchanger (50) acting as an evaporator is transferred to the liquid separator (60), after which the unevaporated liquid refrigerant among the refrigerants transferred by the liquid separator (60) is separated, and only the gaseous refrigerant from which the liquid refrigerant has been separated is supplied to the compressor (10) along the 32nd pipe (L32), thereby circulating so that the refrigerant flow is controlled during heating.

[0088] As illustrated in FIG. 4, the hybrid heating and cooling system (1) of the present invention may heat the raw water in the heat source water tank (52) through a hot water supply mode, and when the heat sensor (53) measures that the temperature of the raw water in the heat source water tank (52) has exceeded a temperature previously set in the control unit and transmits this to the control unit, the raw water in the heat source water tank (52) may be recovered and supplied as heating water to a boiler connected to the heat source water tank (52).

[0089] In addition, in order to prevent cooling air from flowing into the indoor side when the indoor unit (20) is used as an evaporator, an outdoor unit (30) or a bypass connected to the outdoor side is formed in the direction of airflow through the indoor unit (20) and is provided separately from the outdoor unit (30). When the hot water supply mode is operated, the discharge port that blows air towards the indoor side is closed and the bypass connected to the outdoor side is opened, thereby preventing the low-temperature air generated when the indoor unit (20) is used as an evaporator from being blown into the indoor side and allowing it to be blown to the outside.

[0091] As illustrated in FIGS. 5 and 6, when the hybrid cooling and heating system (1) operates in cooling mode, high-temperature, high-pressure gaseous refrigerant formed by compression in the compressor (10) is discharged to the first conduit (L1), and then flows into the outdoor unit (30) through the 21st conduit (L21) according to the opening of the second solenoid valve (SV2) and the fourth solenoid valve (SV4).

[0092] At this time, when the heat usage mode is also operated, the seventh solenoid valve (SV7) is opened, and the gaseous refrigerant is dispersed at a predetermined ratio according to the degree of opening of each solenoid valve (SV4, SV7) and supplied to the outdoor unit (30) and the heat exchanger (50).

[0093] That is, when only the cooling mode is input to the control unit, the high-temperature, high-pressure gaseous refrigerant formed by compression in the compressor (10) is discharged and flows into the outdoor unit (30), and the high-temperature, high-pressure gaseous refrigerant is condensed and converted into a high-pressure liquid refrigerant state and stored in the receiver (40). The high-pressure liquid refrigerant stored in the receiver (40) is converted into a low-pressure liquid refrigerant by the second expansion valve (EV2), and then evaporates into a low-temperature, low-pressure gaseous refrigerant on the indoor unit (20) side, thereby cooling the air around the indoor unit (20) and cooling the indoor side. Afterward, the low-temperature, low-pressure gaseous refrigerant is transferred to the liquid separator (60), and the gaseous refrigerant from which the liquid refrigerant has been separated by the liquid separator (60) is supplied to the compressor (10), thereby controlling the refrigerant flow so that it circulates.

[0094] To explain this in more detail, when only the cooling mode is input to the control unit, the high-temperature, high-pressure gaseous refrigerant formed by compression in the compressor (10) is discharged to the first conduit (L1), and then flows into the outdoor unit (30) through the 21st conduit (L21), the 22nd conduit (L22), and the 11th conduit (L11) in accordance with the opening of the second solenoid valve (SV2) and the fourth solenoid valve (SV4).

[0095] Subsequently, the high-temperature, high-pressure gaseous refrigerant introduced into the outdoor unit (30) is condensed by the outdoor unit (30) acting as a condenser, converted into a high-pressure liquid refrigerant state, and then sequentially moves through the 25th pipe (L25), the 26th pipe (L26), and the 5th pipe (L5) to be delivered to the receiver (40).

[0096] The high-pressure liquid refrigerant introduced into the receiver (40) is transferred to the second expansion valve (EV2) by sequentially passing through the 6th pipe (L6), the 7th pipe (L7), the 27th pipe (L27), and the 28th pipe (L28) in accordance with the opening of the 9th solenoid valve (SV9), and is converted into low-pressure liquid refrigerant by the second expansion valve (EV2) and then supplied to the indoor unit (20) side through the 29th pipe (L29).

[0097] When the low-pressure liquid refrigerant supplied to the indoor unit (20) evaporates into low-temperature, low-pressure gaseous refrigerant by the indoor unit (20) acting as an evaporator and the air around the indoor unit (20) is cooled, the indoor side is cooled by blowing the cooled air around the indoor unit (20) to the indoor side by a blower, and the low-temperature, low-pressure gaseous refrigerant evaporated in the indoor unit (20) moves sequentially through the third conduit (L3), the 30th conduit (L30), and the 31st conduit (L31) to be delivered to the liquid separator (60).

[0098] Finally, the unevaporated liquid refrigerant among the refrigerants delivered by the liquid separator (60) is separated, and only the gaseous refrigerant from which the liquid refrigerant has been separated is supplied to the compressor (10) along the 32nd pipe (L32), thereby controlling the refrigerant flow during cooling.

[0099] Additionally, when the water heat usage mode is input to the control unit along with the cooling mode, the high-temperature, high-pressure gaseous refrigerant formed by compression in the compressor (10) simultaneously with the operation when the cooling mode is input flows into the water heat exchanger (50) in a predetermined ratio according to the degree of opening of each electronic valve (SV4, SV7), and heat exchange is performed by the raw water flowing through the water heat supply pipe (521) of the water heat exchanger (50), so that the high-temperature, high-pressure gaseous refrigerant condenses and is converted into a high-pressure liquid refrigerant state, and is stored in the receiver (40). The high-pressure liquid refrigerant stored in the receiver (40) is converted into a low-pressure liquid refrigerant by the second expansion valve (EV2), and then evaporates into a low-temperature, low-pressure gaseous refrigerant on the indoor unit (20) side, thereby cooling the air around the indoor unit (20) and cooling the indoor side, after which the low-temperature, low-pressure gaseous refrigerant is transferred to the liquid separator (60), and the gaseous refrigerant from which the liquid refrigerant has been separated by the liquid separator (60) The refrigerant flow is controlled so that it circulates in a manner supplied to the compressor (10).

[0100] At this time, it is preferable to understand that the above-mentioned heat exchanger (50) condenses high-temperature, high-pressure gaseous refrigerant as the raw water stored in the heat source water tank (52) is repeatedly supplied to and returned to the enclosure (51) equipped with a refrigerant pipe (511) through which the refrigerant flows by a circulation pump (P) installed on the heat supply pipe (521).

[0101] To explain this in more detail, when the heat usage mode is input to the control unit along with the cooling mode, the high-temperature, high-pressure gaseous refrigerant formed by compression in the compressor (10) is discharged to the first conduit (L1), and then, depending on the opening of the second solenoid valve (SV2), the fourth solenoid valve (SV4), and the seventh solenoid valve (SV7), it flows into the outdoor unit (30) through the 21st conduit (L21), the 22nd conduit (L22), and the 11th conduit (L11), or moves sequentially through the 21st conduit (L21), the 24th conduit (L24), and the 18th conduit (L18) to flow into the heat exchanger (50), where heat exchange is performed by the raw water flowing through the heat supply pipe (521), and the high-temperature, high-pressure gaseous refrigerant is condensed and converted into a high-pressure liquid refrigerant state.

[0102] Here, the high-pressure liquid refrigerant that flows into the heat exchanger (50) and condenses moves to the 11th branch pipe (BP11) through the 9th branch pipe (BP9) and the 25th pipe (L25), and then joins with the high-pressure liquid refrigerant discharged from the outdoor unit (30) side in the 11th branch pipe (BP11).

[0103] Subsequently, the high-pressure liquid refrigerant discharged from the outdoor unit (30) and the heat exchanger (50) sequentially moves through the 26th pipe (L26) and the 5th pipe (L5) to be delivered and stored in the receiver (40). The high-pressure liquid refrigerant introduced into the receiver (40) passes sequentially through the 6th pipe (L6), the 7th pipe (L7), the 27th pipe (L27), and the 28th pipe (L28) in accordance with the opening of the 9th solenoid valve (SV9) to the 2nd expansion valve (EV2), is converted into low-pressure liquid refrigerant by the 2nd expansion valve (EV2), and then passes through the 29th pipe (L29) to be supplied to the indoor unit (20).

[0104] When the low-pressure liquid refrigerant supplied to the indoor unit (20) evaporates into low-temperature, low-pressure gaseous refrigerant by the indoor unit (20) acting as an evaporator and the air around the indoor unit (20) is cooled, the indoor side is cooled by blowing the cooled air around the indoor unit (20) to the indoor side by a blower, and the low-temperature, low-pressure gaseous refrigerant evaporated in the indoor unit (20) moves sequentially through the third conduit (L3), the 30th conduit (L30), and the 31st conduit (L31) to be delivered to the liquid separator (60).

[0105] Finally, the unevaporated liquid refrigerant among the refrigerants delivered by the liquid separator (60) is separated, and only the gaseous refrigerant from which the liquid refrigerant has been separated is supplied to the compressor (10) along the 32nd pipe (L32), thereby controlling the refrigerant flow during cooling.

[0107] The above description is based on the drawings of the present invention, but is not limited to the parts described based on the drawings. Various modifications can be made within the scope of the gist of the present invention in the technical field to which the present invention belongs, without departing from the parts described based on the drawings. Explanation of the symbols

[0109] 1 : Hybrid heating and cooling system 10: Compressor 20 : Indoor unit 30 : Outdoor unit 40: Infotainer 50 : Heat exchanger 51 : Hull 511 : Refrigerant line 52 : Heat source water tank P : Circulation pump 521 : Heat supply pipe 53 : Sequence sensor 60 : Liquid separator SF: Suction filter

Claims

Claim 1 A compressor (10) that forms a high-temperature, high-pressure gaseous refrigerant; an indoor unit (20) that directly receives the high-temperature, high-pressure gaseous refrigerant from the compressor (10) and blows heat-exchanged outdoor air to the indoor side for heating, or blows heat-exchanged outdoor air to the indoor side for cooling by passing through the second expansion valve (EV2); an outdoor unit (30) that discharges the heat generated by evaporating the refrigerant introduced from the first expansion valve (EV1) to the outdoor side together with the air drawn in from the indoor side, or discharges the heat generated by condensing the high-temperature, high-pressure gaseous refrigerant directly supplied from the compressor (10) to the outdoor side together with the air drawn in from the indoor side; and a receiver (40) that stores the high-pressure liquid refrigerant condensed from the indoor unit (20) or the outdoor unit (30) that acts as a condenser. A hybrid cooling and heating system (1) comprising: a liquid separator (60) that separates liquid refrigerant that has not evaporated among the refrigerants introduced from an indoor unit (20) acting as an evaporator or an outdoor unit (30) acting as an evaporator, and supplies only gaseous refrigerant to the compressor (10); wherein the hybrid cooling and heating system (1) comprises: a first expansion valve (EV1) that, when operating in a heating mode, receives high-pressure liquid refrigerant from the receiver (40) storing high-pressure liquid refrigerant condensed in the indoor unit (20), expands it to convert it into low-pressure liquid refrigerant, and then transmits it to the outdoor unit (30); a second expansion valve (EV2) that, when operating in a cooling mode, receives high-pressure liquid refrigerant from the receiver (40) storing high-pressure liquid refrigerant condensed in the outdoor unit (30) or a heat exchanger (50), expands it to convert it into low-pressure liquid refrigerant, and then transmits it to the indoor unit (20); and when operating in a heating mode, the A third expansion valve (EV3) that receives high-pressure liquid refrigerant from the receiver (40) that stores high-pressure liquid refrigerant delivered from the indoor unit (20), expands it to convert it into low-pressure liquid refrigerant, and then delivers it to the heat exchanger (50);A hybrid heating and cooling system characterized by including: a water heat exchanger (50) that discharges the heat generated by evaporating the refrigerant introduced from the third expansion valve (EV3) through raw water passing through a pipe, or discharges the heat generated by condensing the high-temperature, high-pressure gaseous refrigerant supplied directly from the compressor (10) through raw water passing through a pipe.; Claim 2 In claim 1, the hybrid heating and cooling system (1) is characterized by controlling the flow of refrigerant so that when the heating mode is operated, the high-temperature, high-pressure gaseous refrigerant formed by compression in the compressor (10) is discharged and flows into the indoor unit (20), thereby heating the indoor side, and the high-temperature, high-pressure gaseous refrigerant flowing into the indoor unit (20) is condensed and stored in the receiver (40) in the state of high-pressure liquid refrigerant, and the high-pressure liquid refrigerant stored in the receiver (40) is converted into low-pressure liquid refrigerant by the first expansion valve (EV1), then evaporates on the outdoor unit (30) side and is converted into low-temperature, low-pressure gaseous refrigerant and transferred to the liquid separator (60), and the gaseous refrigerant from which the liquid refrigerant has been separated by the liquid separator (60) is supplied to the compressor (10). Claim 3 A hybrid heating and cooling system according to paragraph 2, wherein the indoor unit (20) is sequentially equipped with a filter and a UV sterilization device on the side that draws in outdoor air, and wherein, when drawing in outdoor air, sterilization of the air is performed by the UV sterilization device after filtering by the filter. Claim 4 In paragraph 2, the hybrid cooling and heating system (1) is characterized in that, when the water heat usage mode is operated, the high-pressure liquid refrigerant stored in the receiver (40) is converted into low-pressure liquid refrigerant by the first expansion valve (EV1) and the third expansion valve (EV3), and the refrigerant converted into low-pressure liquid refrigerant by the third expansion valve (EV3) is evaporated on the side of the water heat exchanger (50) and converted into low-temperature low-pressure gaseous refrigerant and supplied to the side of the liquid separator (60). Claim 5 In claim 4, the above-mentioned heat exchanger (50) is characterized by the evaporation of low-pressure liquid refrigerant through heat exchange that occurs as raw water stored in a heat source water tank (52) is repeatedly supplied and recovered to the side of a housing (51) equipped with a refrigerant pipe (511) through which refrigerant flows by a circulation pump (P) installed on a heat supply pipe (521). Claim 6 In claim 5, the hybrid heating and cooling system (1) further comprises a heat sensor (53) that measures the temperature inside the heat source water tank (52) of the heat exchanger (50) and transmits the measured temperature to a control unit. Claim 7 In claim 6, the hybrid heating and cooling system (1) is characterized by automatically controlling the supply ratio of refrigerant by controlling the electronic valve when the temperature inside the heat source water tank (52) measured by the water heat sensor (53) is below a temperature previously designated in the control unit, thereby reducing the ratio of refrigerant supplied to the water heat exchanger (50) and increasing the ratio of refrigerant supplied to the outdoor unit (30). Claim 8 In claim 1, the hybrid cooling and heating system (1) is characterized by controlling the flow of refrigerant so that when operating in cooling mode, high-temperature, high-pressure gaseous refrigerant formed by compression in the compressor (10) is discharged and flows into the outdoor unit (30), and the high-temperature, high-pressure gaseous refrigerant is condensed and converted into a high-pressure liquid refrigerant state and then stored in the receiver (40), and the high-pressure liquid refrigerant stored in the receiver (40) is converted into a low-pressure liquid refrigerant by the second expansion valve (EV2), then evaporates into a low-temperature, low-pressure gaseous refrigerant on the indoor unit (20) side, thereby cooling the air around the indoor unit (20) and cooling the indoor side, after which the low-temperature, low-pressure gaseous refrigerant is transferred to the liquid separator (60), and the gaseous refrigerant separated from the liquid refrigerant by the liquid separator (60) is supplied to the compressor (10). Claim 9 In claim 8, the hybrid cooling and heating system (1) is characterized in that, when operating in a heat-use mode, the high-temperature, high-pressure gaseous refrigerant formed by compression in the compressor (10) flows into the heat exchanger (50), and heat exchange is performed by the raw water flowing through the heat supply pipe (521) of the heat exchanger (50), so that the high-temperature, high-pressure gaseous refrigerant is condensed and converted into a high-pressure liquid refrigerant state, and then stored in the receiver (40). Claim 10 In claim 9, the above-mentioned heat exchanger (50) is characterized by the fact that raw water stored in the heat source water tank (52) is repeatedly supplied to and recovered by a circulation pump (P) installed on the heat source water supply pipe (521) to a housing (51) equipped with a refrigerant pipe (511) through which refrigerant flows, thereby condensing high-temperature, high-pressure gaseous refrigerant in a hybrid cooling and heating system. Claim 11 A hybrid heating and cooling system according to claim 10, wherein the above-described heat exchanger (50) further includes a heat sensor (53) that measures the temperature inside the heat source water tank (52) and transmits the measured temperature to a control unit, and wherein when the temperature of the raw water inside the heat source water tank (52) measured by the heat sensor (53) exceeds a temperature previously designated to the control unit, the raw water inside the heat source water tank (52) is recovered and supplied as heating water to a boiler connected to the heat source water tank (52). Claim 12 In claim 1, the hybrid heating and cooling system (1) comprises: a first pipe (L1) connecting the compressor (10) and the first branch pipe (BP1); a second pipe (L2) connecting the first branch pipe (BP1) and the second branch pipe (BP2); a third pipe (L3) connecting the second branch pipe (BP2) and the indoor unit (20); a fourth pipe (L4) connecting the indoor unit (20) and the third branch pipe (BP3); a fifth pipe (L5) connecting the third branch pipe (BP3) and the receiver (40); a sixth pipe (L6) connecting the receiver (40) and the fourth branch pipe (BP4); a seventh pipe (L7) connecting the fourth branch pipe (BP4) and the fifth branch pipe (BP5); an eighth pipe (L8) connecting the fifth branch pipe (BP5) and the third solenoid valve (SV3); and the third A ninth conduit (L9) connecting the solenoid valve (SV3) and the first expansion valve (EV1); a tenth conduit (L10) connecting the first expansion valve (EV1) and the outdoor unit (30); an eleventh conduit (L11) connecting the outdoor unit (30) and the sixth branch conduit (BP6); a twelfth conduit (L12) connecting the sixth branch conduit (BP6) and the fifth solenoid valve (SV5); a thirteenth conduit (L13) connecting the fifth solenoid valve (SV5) and the eighth branch conduit (BP8); a fourteenth conduit (L14) connecting the eighth branch conduit (BP8) and the twelveth branch conduit (BP12); a fifteenth conduit (L15) connecting the fourth branch conduit (BP4) and the sixth solenoid valve (SV6); and a sixteenth conduit connecting the sixth solenoid valve (SV6) and the third expansion valve (EV3). Pipeline (L16); 17th pipeline (L17) connecting the 3rd expansion valve (EV3) and the 9th branch pipeline (BP9); 18th pipeline (L18) connecting the heat exchanger (50) connected to the 9th branch pipeline (BP9) and the 7th branch pipeline (BP7); 19th pipeline (L19) connecting the 7th branch pipeline (BP7) and the 8th solenoid valve (SV8); 20th pipeline (L20) connecting the 8th solenoid valve (SV8) and the 8th branch pipeline (BP8); 21st pipeline (L21) connecting the 1st branch pipeline (BP1) and the 10th branch pipeline (BP10);A 22nd conduit (L22) connecting the 10th branch conduit (BP10) and the 6th branch conduit (BP6); a 23rd conduit (L23) connecting the outdoor unit (30) and the 11th branch conduit (BP11); a 24th conduit (L24) connecting the 10th branch conduit (BP10) and the 7th branch conduit (BP6); a 25th conduit (L25) connecting the 9th branch conduit (BP9) and the 11th branch conduit (BP11); a 26th conduit (L26) connecting the 11th branch conduit (BP11) and the 3rd branch conduit (BP3); a 27th conduit (L27) connecting the 5th branch conduit (BP5) and the 9th solenoid valve (SV9); a 28th conduit (L28) connecting the 9th solenoid valve (SV9) and the 2nd expansion valve (EV2); and the 2nd expansion valve (EV2) and A hybrid heating and cooling system characterized by comprising: a 29th conduit (L29) connecting the indoor unit (20); a 30th conduit (L30) connecting the 2nd branch conduit (BP2) and the 12th branch conduit (BP12); a 31st conduit (L31) connecting the 12th branch conduit (BP12) and the liquid separator (60); and a 32nd conduit (L32) connecting the liquid separator (60) and the compressor (10). Claim 13 In claim 12, the above hybrid heating and cooling system (1) is configured such that, when operating in heating mode, high-temperature, high-pressure gaseous refrigerant formed by compression in the compressor (10) is discharged to the first conduit (L1), and the high-temperature, high-pressure gaseous refrigerant discharged to the first conduit (L1) flows into the indoor unit (20) through the second conduit (L2) as the first electronic valve (SV1) opens, and when the temperature of the air surrounding the indoor unit rises due to the high-temperature, high-pressure gaseous refrigerant flowing into the indoor unit (20), the air with the risen temperature is blown into the indoor unit using a blower to heat the indoor unit, and the high-temperature, high-pressure gaseous refrigerant flowing into the indoor unit (20) is converted into a high-pressure liquid refrigerant state by condensing due to the air surrounding the indoor unit, and the high-pressure liquid refrigerant moves along the fourth conduit (L4) and the fifth conduit (L5) and is temporarily stored in the receiver (40), after which the uncondensed gaseous refrigerant is separated, and the The high-pressure liquid refrigerant stored in the receiver (40) moves sequentially along the 6th conduit (L6), the 7th conduit (L7), and the 8th conduit (L8), then moves along the opened 3rd solenoid valve (SV3) and the 9th conduit (L9). The high-pressure liquid refrigerant is converted into low-pressure liquid refrigerant by the 1st expansion valve (EV1) and then supplied to the outdoor unit (30) through the 10th conduit (L10). The high-pressure liquid refrigerant supplied to the outdoor unit (30) evaporates on the outdoor unit (30) side and is converted into low-temperature, low-pressure gaseous refrigerant. The low-temperature, low-pressure gaseous refrigerant converted by evaporation by the outdoor unit (30) acting as an evaporator moves sequentially through the 12th conduit (L12), the 13th conduit (L13), and the 14th conduit (L14), and then through the 12th branch conduit (BP12) and the 31st conduit (L31). A hybrid heating and cooling system characterized by being circulated such that the refrigerant flow is controlled during heating by being delivered to the liquid separator (60), the unevaporated liquid refrigerant among the low-temperature, low-pressure gaseous refrigerant delivered to the liquid separator (60) is separated, and only the gaseous refrigerant from which the liquid refrigerant has been separated is supplied to the compressor (10) along the 32nd pipe (L32). Claim 14 In claim 13, the hybrid cooling and heating system (1) is characterized in that, when the heat-using mode is operated, the high-pressure liquid refrigerant stored in the receiver (40) moves sequentially along the 6th conduit (L6) and the 15th conduit (L15), then moves along the opened 6th solenoid valve (SV6) and the 16th conduit (L16), and the high-pressure liquid refrigerant is converted into low-pressure liquid refrigerant by the 3rd expansion valve (EV3) and then supplied to the outdoor unit (30) through the 10th conduit (L10). Claim 15 In claim 12, the above hybrid cooling and heating system (1), when operating in cooling mode, high-temperature, high-pressure gaseous refrigerant formed by compression in the compressor (10) is discharged to the first conduit (L1), and then flows into the outdoor unit (30) side through the 21st conduit (L21), the 22nd conduit (L22), and the 11th conduit (L11) according to the opening of the second solenoid valve (SV2) and the 4th solenoid valve (SV4). The high-temperature, high-pressure gaseous refrigerant flowing into the outdoor unit (30) side is condensed by the outdoor unit (30) acting as a condenser and converted into a high-pressure liquid refrigerant state, and then sequentially moves through the 25th conduit (L25), the 26th conduit (L26), and the 5th conduit (L5) to be delivered to the receiver (40) side, and the high-pressure liquid refrigerant flowing into the receiver (40) according to the opening of the 9th solenoid valve (SV9), It is transmitted to the second expansion valve (EV2) via the 6th pipe (L6), the 7th pipe (L7), the 27th pipe (L27), and the 28th pipe (L28) in sequence, converted into low-pressure liquid refrigerant by the second expansion valve (EV2), and then supplied to the indoor unit (20) via the 29th pipe (L29). The low-pressure liquid refrigerant supplied to the indoor unit (20) evaporates into low-temperature, low-pressure gaseous refrigerant by the indoor unit (20) acting as an evaporator, and as the air around the indoor unit (20) cools, the indoor side is cooled by blowing the cooled air around the indoor unit (20) to the indoor side by a blower. The low-temperature, low-pressure gaseous refrigerant evaporated in the indoor unit (20) moves sequentially through the 3rd pipe (L3), the 30th pipe (L30), and the 31st pipe (L31) and is then transmitted to the liquid separator (60), and then by the liquid separator (60) A hybrid cooling and heating system characterized by the fact that the unevaporated liquid refrigerant among the delivered refrigerants is separated, and only the gaseous refrigerant from which the liquid refrigerant has been separated is supplied to the compressor (10) along the 32nd pipe (L32), thereby controlling the refrigerant flow during cooling. Claim 16 In claim 15, the hybrid cooling and heating system (1) is characterized in that, when the water heat usage mode is operated, the high-temperature, high-pressure gaseous refrigerant discharged from the compressor (10) moves sequentially through the 21st conduit (L21), the 24th conduit (L24), and the 18th conduit (L18) in accordance with the opening of the 7th electronic valve (SV7) and flows into the water heat exchanger (50), and heat exchange is performed by the raw water flowing through the water heat supply pipe (521), and the high-temperature, high-pressure gaseous refrigerant is condensed and converted into a high-pressure liquid refrigerant state, and then moves sequentially through the 9th branch conduit (BP9), the 25th conduit (L25), the 26th conduit (L26), and the 5th conduit (L5) and is stored in the receiver (40). Claim 17 A hybrid heating and cooling system according to any one of claims 1 to 16, wherein the expansion valve used in the hybrid heating and cooling system (1) is formed with an inlet through which refrigerant is introduced through a plurality of pipes, a housing that contains an expansion section for expanding the refrigerant, and an outlet formed by a single pipe section for discharging the refrigerant expanded in the expansion section.

Images