Cooling and heating apparatus that improves energy efficiency by using a combination of capillary and spray nozzle, and cooling operation method and heating operation method using the same

Abstract

The heating and cooling device of the present invention, which improves energy efficiency by combining a capillary tube and a spray nozzle, comprises: a compressor that compresses a low-temperature, low-pressure refrigerant into a high-temperature, high-pressure refrigerant; a dryer connected to the compressor; a first pipe connected to the dryer; a first four-way valve connected to the first pipe; a double-pipe heat exchanger that pre-cools the high-temperature, high-pressure refrigerant through heat exchange between the high-temperature, high-pressure refrigerant and the low-temperature, low-pressure refrigerant; a first-1 pipe connected to the first four-way valve and inserted into the inner pipe of the double-pipe heat exchanger; a first-2 pipe connected to the first four-way valve and connected to the compressor; a first-3 pipe connected to the first four-way valve; a first capillary tube connected to the first-1 pipe; a second four-way valve connected to the first-3 pipe; a capillary spray is performed at the end of the first capillary tube, and a second-1 pipe connected to the end of the first capillary tube where the capillary spray is performed and A second pipe branching into the second-2 pipe, a second-1-1 pipe and a second-1-2 pipe branching from the second-1 pipe, a second capillary tube connected to the second-1-1 pipe, a third capillary tube connected to the second-1-2 pipe, a fourth capillary tube connected to the second-2 pipe, a first spray nozzle connected to the second capillary tube, a second spray nozzle connected to the third capillary tube, a third spray nozzle connected to the fourth capillary tube, a third pipe connected to the first spray nozzle, a fourth pipe connected to the second spray nozzle, a fifth pipe connected to the third spray nozzle, a refrigerant junction connected to the third pipe, a first evaporator connected to the fourth pipe, a second evaporator connected to the fifth pipe, a sixth pipe connected to the first evaporator and connected to the refrigerant junction, and connected to the second evaporator A seventh pipe, a fifth capillary connected to the seventh pipe, a fourth injection nozzle connected to the fifth capillary, an eighth pipe connected to the fourth injection nozzle, a third evaporator connected to the eighth pipe, a ninth pipe connected to the third evaporator and connected to the second four-way valve, a tenth pipe connected to the second four-way valve and connected to the refrigerant junction, the third pipe,It includes a 11th pipe connected to the refrigerant confluence where the 6th pipe and the 10th pipe merge, and which is externally inserted into the outer surface of the double-pipe heat exchanger and connected to the 2nd four-way valve; during cooling, the 1st pipe and the 1-1 pipe are connected at the 1st four-way valve, and the 1-2 pipe and the 1-3 pipe are connected, and the 1-3 pipe and the 11th pipe are connected at the 2nd four-way valve, and the 9th pipe and the 10th pipe are connected; and during heating, the 1st pipe and the 1-3 pipe are connected at the 1st four-way valve, and the 1-1 pipe and the 1-2 pipe are connected, and the 1-3 pipe and the 9th pipe are connected at the 2nd four-way valve, and the 10th pipe and the 11th pipe are connected, and it has the effect of having excellent energy efficiency by combining pre-cooling, capillary cooling, and spray cooling.

Description

Technology Field

[0001] The present invention relates to a cooling and heating device that improves energy efficiency by combining a capillary tube and a spray nozzle, and to a cooling operation method and a heating operation method using the same. More specifically, it relates to a cooling and heating device that improves energy efficiency by combining a capillary tube and a spray nozzle, which has excellent energy efficiency by combining pre-cooling, capillary tube cooling, and spray cooling, and does not require a separate outdoor unit, and to a cooling operation method and a heating operation method using the same. Background Technology

[0003] While fans and air conditioners have been the primary cooling devices used during the summer, air conditioners, despite their excellent cooling efficiency, pose problems such as high power consumption that leads to energy shortages during the summer and high unit costs. Due to these drawbacks, households and offices are currently refraining from using air conditioners for cooling during the summer and instead relying on fans. Similarly, electric heaters are mainly used for heating during the winter; however, electric heaters suffer from low economic efficiency and low power consumption because they require separate purchase from air conditioners.

[0004] The heating and cooling system is configured to include a heating and cooling device for maintaining a desired indoor temperature or storage temperature. A heating and cooling system is a device that cools an indoor temperature to below a set temperature using a cooling cycle comprising a compressor, a condenser (an outdoor heat exchanger), an expansion valve, and an evaporator (an indoor heat exchanger), or heats an indoor temperature above a set temperature using a heating cycle. In the cooling operation of the above heating and cooling system, refrigerant compressed by the compressor flows to the outdoor heat exchanger; the outdoor heat exchanger acts as a condenser by exchanging heat with outdoor air and processes the heat generated during the compression process. The refrigerant condensed in the outdoor heat exchanger flows into the indoor space through piping, expands at the expansion valve, and then flows into the indoor heat exchanger; the indoor heat exchanger acts as an evaporator, absorbs heat from the air (the cooling fluid), and carries out the cooling operation. Additionally, in the heating operation of the above heating and cooling system, refrigerant compressed by the compressor flows to the indoor heat exchanger; the refrigerant compressed in the indoor heat exchanger exchanges heat with the indoor air and utilizes the heat generated during the compression process to carry out the heating operation.

[0005] In the aforementioned heating and cooling systems, the air-cooling method, which utilizes outdoor air, is generally used to handle condensation heat. In this case, the basic configuration of the system consists of an indoor unit installed inside and an outdoor unit installed outside. Specifically, the indoor unit is a device that cools indoor air and includes most components such as the evaporator, while the outdoor unit is a device that includes a condenser, which cools high-temperature, high-pressure gaseous refrigerant to convert it into liquid refrigerant. The condenser, which forms the main component of the outdoor unit, is equipped with condensation tubes through which high-temperature, high-pressure gaseous refrigerant circulates, and cooling fins on the outside to facilitate heat exchange. It primarily operates a motor fan to supply outside air, and through active heat exchange, it cools the high-temperature, high-pressure gaseous refrigerant flowing inside, causing a phase change into liquid refrigerant and releasing the condensation heat to the outside. Since the outdoor unit is an essential device required to cool the high-temperature, high-pressure gaseous refrigerant and ensure a smooth heating and cooling system, conventional heating and cooling systems have always installed the indoor and outdoor units separately. However, these outdoor units basically generate a lot of heat and noise and have low energy efficiency. In particular, since the indoor and outdoor units must be interconnected by pipes, there were various problems such as requiring a lot of effort to install the heating and cooling system and limiting the installation location.

[0006] In addition, although there have been conventional cooling and heating systems without outdoor units, conventional cooling and heating systems without outdoor units generally use a separate cooling device to process condensation heat, so there are still problems such as low energy efficiency and a complex structure of the cooling and heating system. In this regard, Korean Patent Publication No. 10-2020-0084238 (Patent Document 1) has been disclosed as prior art related to cooling and heating systems without outdoor units.

[0007] Patent Document 1 relates to a cooling system without an outdoor unit that combines a freezer and an air conditioner. More specifically, it is characterized by an outdoor unit system that combines a freezer and an air conditioner, in which a conventional freezer is combined with the air conditioner as a substitute for the outdoor unit of a conventional air conditioner equipped with an outdoor unit, thereby eliminating the need to install an outdoor unit on the exterior of a building. By replacing the outdoor unit with a freezer to cool the hot refrigerant transferred from the indoor unit of the air conditioner, it contributes significantly to lowering the ambient temperature in urban areas because there is no cooling system installed outdoors, as there is no outdoor unit installed on the exterior wall of the building. Furthermore, it is environmentally friendly because the hot air from the outdoor system does not cause discomfort to people. While conventional air conditioners may fail to lower the indoor temperature during heatwaves when the outside temperature is high, the present invention has the effect of maintaining indoor cooling without being affected by the outside temperature. Additionally, by applying an air conditioner to a conventional household freezer, it can be installed simply and at a low cost. Since it is installed only indoors, it can be used as a mobile unit by attaching wheels, and it has the effect of being applicable for multi-purpose use as needed in the right place at the right time.

[0008] However, conventional cooling and heating devices without an outdoor unit, including Patent Document 1, do not recognize the concept of improving energy efficiency by combining pre-cooling, capillary cooling, and spray cooling, and efficiently carrying out cooling and heating operations without a separate outdoor unit; therefore, the problems of reduced energy efficiency and complex structure of the cooling and heating device still remain in conventional cooling and heating devices without an outdoor unit, including Patent Document 1. Prior art literature

[0010] Republic of Korea Published Patent Application No. 10-2020-0084238 (Published July 10, 2020) The problem to be solved

[0011] In resolving the aforementioned problems, the objective of the present invention is to provide a cooling and heating device with improved energy efficiency by combining pre-cooling, capillary cooling, and spray cooling, and by combining a capillary tube and a spray nozzle that have excellent energy efficiency, as well as a cooling operation method and a heating operation method using the same.

[0012] In addition, the objective of the present invention is to provide a cooling and heating device with improved energy efficiency by combining a capillary tube and a spray nozzle, which enables efficient cooling and heating operations without an outdoor unit by combining pre-cooling, capillary cooling, and spray cooling and by relieving condensation heat using a double-tube heat exchanger, and to provide a cooling operation method and a heating operation method using the same.

[0013] In addition, the objective of the present invention is to provide a cooling and heating device that improves energy efficiency by combining a capillary tube and a spray nozzle, which is easy to install and has a simple structure and excellent economic efficiency, by relieving condensation heat through a double-tube heat exchanger with a simple structure utilizing pre-cooling, capillary cooling, and spray cooling to replace the function of an outdoor unit, and to provide a cooling operation method and a heating operation method using the same.

[0014] In addition, the objective of the present invention is to provide a cooling and heating device with improved energy efficiency by combining a capillary tube and a spray nozzle, which eliminates condensation heat through a double-tube heat exchanger with a simple structure utilizing pre-cooling, capillary cooling, and spray cooling to replace the function of an outdoor unit, thereby eliminating the need for an outdoor unit and allowing installation regardless of the installation location, as well as cooling and heating operation methods using the same. means of solving the problem

[0016] A heating and cooling device that improves energy efficiency by combining a capillary tube and a spray nozzle according to an embodiment of the present invention comprises: a compressor that compresses a low-temperature, low-pressure refrigerant into a high-temperature, high-pressure refrigerant; a dryer connected to the compressor; a first pipe connected to the dryer; a first four-way valve connected to the first pipe; a double-pipe heat exchanger that pre-cools the high-temperature, high-pressure refrigerant through heat exchange between the high-temperature, high-pressure refrigerant and the low-temperature, low-pressure refrigerant; a first-1 pipe connected to the first four-way valve and inserted into the inner pipe of the double-pipe heat exchanger; a first-2 pipe connected to the first four-way valve and connected to the compressor; a first-3 pipe connected to the first four-way valve; a first capillary tube connected to the first-1 pipe; a second four-way valve connected to the first-3 pipe; a capillary spray is performed at the end of the first capillary tube, and a second-1 pipe connected to the end of the first capillary tube where the capillary spray is performed and A second pipe branching into the second-2 pipe, a second-1-1 pipe and a second-1-2 pipe branching from the second-1 pipe, a second capillary tube connected to the second-1-1 pipe, a third capillary tube connected to the second-1-2 pipe, a fourth capillary tube connected to the second-2 pipe, a first spray nozzle connected to the second capillary tube, a second spray nozzle connected to the third capillary tube, a third spray nozzle connected to the fourth capillary tube, a third pipe connected to the first spray nozzle, a fourth pipe connected to the second spray nozzle, a fifth pipe connected to the third spray nozzle, a refrigerant junction connected to the third pipe, a first evaporator connected to the fourth pipe, a second evaporator connected to the fifth pipe, a sixth pipe connected to the first evaporator and connected to the refrigerant junction, and connected to the second evaporator A seventh pipe, a fifth capillary connected to the seventh pipe, a fourth injection nozzle connected to the fifth capillary, an eighth pipe connected to the fourth injection nozzle, a third evaporator connected to the eighth pipe, a ninth pipe connected to the third evaporator and connected to the second four-way valve, a tenth pipe connected to the second four-way valve and connected to the refrigerant junction, the third pipe,It includes a 11th pipe connected to the refrigerant confluence where the 6th pipe and the 10th pipe merge, and which is externally inserted into the outer surface of the double-pipe heat exchanger and connected to the 2nd four-way valve; during cooling, the 1st pipe and the 1-1 pipe are connected at the 1st four-way valve, and the 1-2 pipe and the 1-3 pipe are connected, and the 1-3 pipe and the 11th pipe are connected at the 2nd four-way valve, and the 9th pipe and the 10th pipe are connected; and during heating, the 1st pipe and the 1-3 pipe are connected at the 1st four-way valve, and the 1-1 pipe and the 1-2 pipe are connected, and the 1-3 pipe and the 9th pipe are connected at the 2nd four-way valve, and the 10th pipe and the 11th pipe are connected.

[0017] In this case, in a heating and cooling device that improves energy efficiency by combining a capillary tube and a spray nozzle according to an embodiment of the present invention, the first capillary tube : the second capillary tube : the third capillary tube : the fourth capillary tube : the fifth capillary tube is characterized by having a ratio of refrigerant spray amounts of 1,900-2,100:160-260:160-260:900-1,100:820-920.

[0018] In this case, in a heating and cooling device that improves energy efficiency by combining a capillary tube and a spray nozzle according to an embodiment of the present invention, the first spray nozzle: the second spray nozzle: the third spray nozzle: the fourth spray nozzle are characterized by having a refrigerant spray amount ratio of 3.5-5.5:3.5-5.5:700-800:20-25.

[0019] In this case, the heating and cooling device with improved energy efficiency using a combination of a capillary tube and a spray nozzle according to an embodiment of the present invention is characterized in that the first capillary tube has a refrigerant spray amount of 1,900-2,100 l / hour, the second capillary tube has a refrigerant spray amount of 160-260 l / hour, the third capillary tube has a refrigerant spray amount of 160-260 l / hour, the fourth capillary tube has a refrigerant spray amount of 900-1,100 l / hour, and the fifth capillary tube has a refrigerant spray amount of 820-920 l / hour.

[0020] In this case, the heating and cooling device with improved energy efficiency using a combination of a capillary tube and a spray nozzle according to an embodiment of the present invention is characterized in that the first spray nozzle has a refrigerant spray amount of 3.5-5.5 l / hour, the second spray nozzle has a refrigerant spray amount of 3.5-5.5 l / hour, the third spray nozzle has a refrigerant spray amount of 700-800 l / hour, and the fourth spray nozzle has a refrigerant spray amount of 20-25 l / hour.

[0021] Meanwhile, a cooling operation method using a cooling and heating device that improves energy efficiency by combining a capillary tube and a spray nozzle according to another embodiment of the present invention comprises the steps of: compressing a low-temperature, low-pressure refrigerant into a high-temperature, high-pressure refrigerant in a compressor; removing moisture from the high-temperature, high-pressure refrigerant in a dryer; supplying the high-temperature, high-pressure refrigerant to a first four-way valve through a first pipe connected to the dryer; connecting the first pipe and the first-1 pipe at the first four-way valve, with the first-1 pipe being inserted into the inner pipe and the eleventh pipe being inserted into the outer pipe to form a double-pipe heat exchanger, undergoing a process in which the high-temperature, high-pressure refrigerant in the first-1 pipe is pre-cooled through heat exchange between the high-temperature, high-pressure refrigerant in the inner pipe of the double-pipe heat exchanger and the low-temperature, low-pressure refrigerant in the outer pipe; supplying the high-temperature, high-pressure refrigerant to a first capillary tube through the first-1 pipe; and performing capillary spraying of the refrigerant at the end of the first capillary tube. A step of supplying refrigerant to a second capillary tube through a second pipe connected to the end of a first capillary tube, a second-1 pipe branching from the second pipe, and a second-1-1 pipe branching from the second-1 pipe, and spraying refrigerant through a first spray nozzle connected to the second capillary tube; a step in which capillary spraying of refrigerant occurs at the end of the first capillary tube, and supplying refrigerant to a third capillary tube through a second pipe connected to the end of the first capillary tube where capillary spraying occurs, a second-1 pipe branching from the second pipe, and a second-1-2 pipe branching from the second-1 pipe, and spraying refrigerant through a second spray nozzle connected to the third capillary tube, and a step in which capillary spraying of refrigerant occurs at the end of the first capillary tube, and supplying refrigerant to a fourth capillary tube through a second pipe connected to the end of the first capillary tube where capillary spraying occurs and a second-2 pipe branching from the second pipe, and A step of injecting refrigerant through a third injection nozzle connected to a fourth capillary tube; a step of supplying the refrigerant injected through the first injection nozzle to a refrigerant confluence through a third pipe; a step of supplying the refrigerant injected through the second injection nozzle to a first evaporator through a fourth pipe; a step of supplying the refrigerant injected through the third injection nozzle to a second evaporator through a fifth pipe.A step of supplying refrigerant that has passed through the first evaporator to the refrigerant confluence through the sixth pipe; a step of supplying refrigerant that has passed through the second evaporator to the fifth capillary tube through the seventh pipe and spraying refrigerant through the fourth injection nozzle connected to the fifth capillary tube; a step of supplying the refrigerant sprayed through the fourth injection nozzle to the third evaporator through the eighth pipe; a step of supplying refrigerant that has passed through the third evaporator to the second four-way valve through the ninth pipe; a step in which the ninth pipe and the tenth pipe are connected at the second four-way valve, and the refrigerant supplied to the second four-way valve is supplied to the refrigerant confluence through the tenth pipe; refrigerant is supplied to the refrigerant confluence through the third pipe, the sixth pipe, and the tenth pipe, and the eleventh pipe is connected to the refrigerant confluence, and the first-1 pipe is inserted into the inner pipe and the eleventh pipe is inserted into the outer pipe to form a double pipe heat exchanger, and the double pipe heat exchanger The method comprises the following steps: a step in which the low-temperature, low-pressure refrigerant in the 11th pipe is preheated through heat exchange between the high-temperature, high-pressure refrigerant in the inner pipe and the low-temperature, low-pressure refrigerant in the outer pipe; a step in which the 11th pipe is connected to the 2nd four-way valve, and the 11th pipe and the 1-3 pipe are connected at the 2nd four-way valve, and the refrigerant supplied to the 2nd four-way valve is supplied to the 1st four-way valve through the 1-3 pipe; and a step in which the 1-3 pipe and the 1-2 pipe are connected at the 1st four-way valve, and the low-temperature, low-pressure refrigerant is supplied to the compressor through the 1-2 pipe.

[0022] Meanwhile, a heating operation method using a heating and cooling device that improves energy efficiency by combining a capillary tube and a spray nozzle according to another embodiment of the present invention comprises the steps of: compressing a low-temperature, low-pressure refrigerant into a high-temperature, high-pressure refrigerant in a compressor; removing moisture from the high-temperature, high-pressure refrigerant in a dryer; supplying the high-temperature, high-pressure refrigerant to a first four-way valve through a first pipe connected to the dryer; connecting the first pipe and the first-3 pipe at the first four-way valve, connecting the first-3 pipe to the second four-way valve, connecting the first-3 pipe and the 9th pipe at the second four-way valve, and connecting the 10th pipe and the 11th pipe, thereby supplying the high-temperature, high-pressure refrigerant to a third evaporator through the first-3 pipe, the second four-way valve, and the 9th pipe; supplying the refrigerant that has passed through the third evaporator to a fourth spray nozzle through the eighth pipe; and supplying the refrigerant that has passed through the fourth spray nozzle to a fifth capillary tube and The method comprises the steps of: supplying to the second evaporator through the seventh pipe; supplying the refrigerant that has passed through the second evaporator to the third injection nozzle through the fifth pipe; supplying the refrigerant that has passed through the third injection nozzle to the first capillary tube through the fourth capillary tube, the second-2 pipe, and the second pipe; supplying the refrigerant that has passed through the first capillary tube to the first four-way valve via the first-1 pipe; and connecting the first-1 pipe and the first-2 pipe at the first four-way valve and supplying the refrigerant to the compressor through the first-2 pipe. Effects of the invention

[0024] As described above, the cooling and heating device with improved energy efficiency by combining a capillary tube and a spray nozzle according to the present invention, and the cooling and heating operation methods using the same, have the effect of excellent energy efficiency by combining pre-cooling, capillary tube cooling, and spray cooling.

[0025] In addition, the cooling and heating device with improved energy efficiency by combining a capillary tube and a spray nozzle according to the present invention, and the cooling and heating operation methods using the same, utilize pre-cooling, capillary tube cooling, and spray cooling in combination, and enable the removal of condensation heat using a double-tube heat exchanger, thereby having the effect of efficiently performing cooling and heating operations without an outdoor unit.

[0026] In addition, the cooling and heating device with improved energy efficiency by combining a capillary tube and a spray nozzle according to the present invention, and the cooling and heating operation methods using the same, replace the function of an outdoor unit by relieving condensation heat through a double-tube heat exchanger with a simple structure utilizing pre-cooling, capillary tube cooling, and spray cooling; thus, it has the effect of being easy to install and simple in structure, resulting in excellent economic efficiency.

[0027] In addition, the cooling and heating device with improved energy efficiency by combining a capillary tube and a spray nozzle according to the present invention, and the cooling and heating operation methods using the same, replace the function of an outdoor unit by relieving condensation heat through a double-tube heat exchanger of a simple structure utilizing pre-cooling, capillary tube cooling, and spray cooling; thus, it has the effect of eliminating the need for an outdoor unit and allowing installation regardless of the installation location. Brief explanation of the drawing

[0029] This is a drawing showing the configuration of a cooling and heating device with improved energy efficiency by combining a capillary tube and a spray nozzle according to an embodiment of the present invention, and the operation during cooling operation. FIG. 2 is a diagram showing the configuration of a heating and cooling device with improved energy efficiency by combining a capillary tube and a spray nozzle according to an embodiment of the present invention, and the operation during heating operation. FIG. 3 is a diagram showing the sequence of a cooling operation method using a cooling and heating device that improves energy efficiency by combining a capillary tube and a spray nozzle according to an embodiment of the present invention. FIG. 4 is a diagram showing the sequence of a heating operation method using a heating and cooling device that improves energy efficiency by combining a capillary tube and a spray nozzle according to an embodiment of the present invention. Specific details for implementing the invention

[0030] In the present invention, the attached drawings may be illustrated with exaggerated expressions to distinguish it from the prior art, ensure clarity, and facilitate understanding of the technology. Furthermore, the terms described below are defined considering their functions in the present invention; since these terms may vary depending on the intentions or conventions of the user or operator, their definitions should be based on the technical content throughout this specification. Meanwhile, the embodiments are merely exemplary details of the components presented in the claims of the present invention and do not limit the scope of the rights of the present invention; the scope of rights should be interpreted based on the technical concept throughout the specification of the present invention.

[0031] Furthermore, prior to describing the present invention, it should be noted that matters not necessary to reveal the gist of the invention—namely, known configurations that a person skilled in the art with ordinary knowledge could obviously add—have not been illustrated or specifically described.

[0032] FIG. 1 is a diagram showing the configuration of a cooling and heating device with improved energy efficiency by combining a capillary tube and a spray nozzle according to an embodiment of the present invention, and the operation during cooling operation. FIG. 2 is a diagram showing the configuration of a cooling and heating device with improved energy efficiency by combining a capillary tube and a spray nozzle according to an embodiment of the present invention, and the operation during heating operation.

[0033] According to FIGS. 1 and 2, a heating and cooling device that improves energy efficiency by combining a capillary tube and a spray nozzle according to an embodiment of the present invention comprises: a compressor (100) that compresses a low-temperature, low-pressure refrigerant into a high-temperature, high-pressure refrigerant; a dryer (200) connected to the compressor (100); a first pipe (301) connected to the dryer (200); a first four-way valve (410) connected to the first pipe (301); a double-pipe heat exchanger (500) that pre-cools the high-temperature, high-pressure refrigerant through heat exchange between the high-temperature, high-pressure refrigerant and the low-temperature, low-pressure refrigerant; a first-1 pipe (301A) connected to the first four-way valve (410) and inserted into the inner pipe of the double-pipe heat exchanger (500); a first-2 pipe (301B) connected to the first four-way valve (410) and connected to the compressor (100); and a pipe connected to the first four-way valve (410). A first-third pipe (301C), a first capillary tube (610) connected to the first-first pipe (301A), a second four-way valve (420) connected to the first-third pipe (301C), a capillary spray is performed at the end of the first capillary tube (610), and a second pipe (302) connected to the end of the first capillary tube (610) where the capillary spray is performed and branched into a second-first pipe (302A) and a second-second pipe (302B), a second-first pipe (302A1) and a second-first pipe (302A2) branched from the second-first pipe (302A), a second capillary tube (620) connected to the second-first pipe (302A1), a third capillary tube (630) connected to the second-first pipe (302A2), and the A fourth capillary tube (640) connected to the second-2 pipe (302B), a first spray nozzle (710) connected to the second capillary tube (620), a second spray nozzle (720) connected to the third capillary tube (630), a third spray nozzle (730) connected to the fourth capillary tube (640), a third pipe (303) connected to the first spray nozzle (710), a fourth pipe (304) connected to the second spray nozzle (720), a fifth pipe (305) connected to the third spray nozzle (730), and a refrigerant confluence section (800) connected to the third pipe (303).A first evaporator (910) connected to the fourth pipe (304), a second evaporator (920) connected to the fifth pipe (305), a sixth pipe (306) connected to the first evaporator (910) and connected to the refrigerant junction (800), a seventh pipe (307) connected to the second evaporator (920), a fifth capillary tube (650) connected to the seventh pipe (307), a fourth injection nozzle (740) connected to the fifth capillary tube (650), an eighth pipe (308) connected to the fourth injection nozzle (740), a third evaporator (930) connected to the eighth pipe, a ninth pipe (309) connected to the third evaporator (930) and connected to the second four-way valve (420), and connected to the second four-way valve (420). It includes a 10th pipe (310) connected to a refrigerant confluence section (800), a 3rd pipe (303), a 6th pipe (306), and a 11th pipe (311) connected to the refrigerant confluence section (800) where the 10th pipe (310) joins, and which is externally inserted into the exterior of the double-pipe heat exchanger (500) and connected to the 2nd four-way valve (420); when cooling, the 1st pipe (301) and the 1-1 pipe (301A) are connected at the 1st four-way valve (410), and the 1-2 pipe (301B) and the 1-3 pipe (301C) are connected, and the 1-3 pipe (301C) and the 11th pipe (311) are connected at the 2nd four-way valve (420), and the 9th pipe (309) and the It may be characterized by the connection of the 10th pipe (310), and when heating, the 1st pipe (301) and the 1st-3rd pipe (301C) are connected at the 1st four-way valve (410), the 1st-1st pipe (301A) and the 1st-2nd pipe (301B) are connected, and the 1st-3rd pipe (301C) and the 9th pipe (309) are connected at the 2nd four-way valve (420), and the 10th pipe (310) and the 11th pipe (311) are connected.

[0034] The compressor (100) compresses a low-temperature, low-pressure gaseous refrigerant to transform it into a high-temperature, high-pressure gaseous refrigerant. As long as it performs the function of transforming a low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant by applying mechanical energy while compressing it, there are no special restrictions on the configuration or form of the compressor (100). A dryer (200) is connected to the compressor (100) to remove moisture from the high-temperature, high-pressure gaseous refrigerant. As long as it performs the function of removing moisture from the high-temperature, high-pressure gaseous refrigerant, there are no special restrictions on the configuration or form of the dryer (200).

[0035] A first pipe (301) is connected to a dryer (200), and the first pipe (301) may have a structure in which it is connected to the dryer (200) and to a first four-way valve (410). The first four-way valve (410) may have a structure in which the first pipe (301), the first-1 pipe (301A), the first-2 pipe (301B), and the first-3 pipe (301C) are connected. At the first four-way valve (410), the first pipe (301) can be freely connected to the first-1 pipe (301A), the first-2 pipe (301B), and the first-3 pipe (301C), and the first-1 pipe (301A), the first-2 pipe (301B), and the first-3 pipe (301C) can also be freely connected to one another. During cooling operation, the first pipe (301) and the first-1 pipe (301A) can be connected at the first four-way valve (410), and the first-2 pipe (301B) and the first-3 pipe (301C) can be connected. During heating operation, the first pipe (301) and the first-third pipe (301C) can be connected at the first four-way valve (410), and the first-first pipe (301A) and the first-second pipe (301B) can be connected. During cooling operation, high-temperature, high-pressure refrigerant before cooling can pass through the first pipe (301) from the first four-way valve (410) and the first-first pipe (301A), and low-temperature, low-pressure refrigerant after cooling can pass through the first-third pipe (301C) from the first four-way valve (410) and the first-second pipe (301B) to be supplied to the compressor (100). During heating operation, high-temperature, high-pressure refrigerant before heating can pass through the first pipe (301) from the first four-way valve (410) and the first-third pipe (301C), and low-temperature, low-pressure refrigerant after heating can pass through the first-first pipe (301A) from the first four-way valve (410) and the first-second pipe (301B) to be supplied to the compressor (100).The first-1 pipe (301A) may have a structure in which it is connected to the first four-way valve (410) and inserted into the inner tube of the double-pipe heat exchanger (500) and connected to the first capillary tube (610), the first-2 pipe (301B) may have a structure in which it is connected to the first four-way valve (410) and connected to the compressor (100), and the first-3 pipe (301C) may have a structure in which it is connected to the first four-way valve (410) and connected to the second four-way valve (420).

[0036] The heating and cooling device of the present invention, which improves energy efficiency by combining a capillary tube and a spray nozzle, includes a double-pipe heat exchanger (500) that pre-cools the high-temperature, high-pressure refrigerant through heat exchange between the high-temperature, high-pressure refrigerant and the low-temperature, low-pressure refrigerant. In this case, the double-pipe heat exchanger (500) may have a structure in which the first-1 pipe (301A) is inserted into the inner pipe and the eleventh pipe (311) is inserted into the outer pipe, and it may perform the function of pre-cooling the high-temperature, high-pressure refrigerant during cooling operation through heat exchange between the high-temperature, high-pressure refrigerant passing through the first-1 pipe (301A) and the low-temperature, low-pressure refrigerant passing through the eleventh pipe (311). In this case, the first-1 pipe (301A) may be characterized by being inserted into the inner tube of the double-tube heat exchanger (500) and connected to the first capillary tube (610), and the eleventh pipe (311) may be characterized by being inserted into the outer tube of the double-tube heat exchanger (500) and connected to the second four-way valve (420). In this case, the high-temperature, high-pressure refrigerant that is pre-cooled while passing through the first-1 pipe (301A) may be supplied to the first capillary tube (610), and the low-temperature, low-pressure refrigerant that is pre-heated while passing through the eleventh pipe (311) may be supplied to the second four-way valve (420).

[0037] Capillary injection of a pre-cooled high-temperature, high-pressure refrigerant is performed at the end of the first capillary tube (610), and the structure may be such that the end of the first capillary tube (610) where the capillary injection is performed is connected to the second pipe (302). In this case, the second pipe (302) may have a structure that is connected to the first capillary tube (610) and branches into a second-1 pipe (302A) and a second-2 pipe (302B). Additionally, the second-1 pipe (302A) may have a structure that branches into a second-1-1 pipe (302A1) and a second-1-2 pipe (302A2). The second-1-1 pipe (302A1) branched from the second-1 pipe (302A) may have a structure that is connected to the second capillary tube (620). Additionally, the second-1-2 pipe (302A2) branched from the second-1 pipe (302A) may have a structure connected to the third capillary tube (630). Furthermore, the second capillary tube (620) may have a structure in which the first spray nozzle (710) is connected, and the third capillary tube (630) may have a structure in which the second spray nozzle (720) is connected. The second-2 pipe (302B) branched from the second pipe (302) may have a structure in which it is connected to the fourth capillary tube (640), and the fourth capillary tube (640) may have a structure in which the third spray nozzle (730) is connected. The first capillary (610) may have an inner diameter of 1.4-1.8 mm, the second capillary (620) may have an inner diameter of 1.05-1.45 mm, the third capillary may have an inner diameter of 1.05-1.45 mm, and the fourth capillary may have an inner diameter of 1.4-1.8 mm.

[0038] During cooling operation, the high-temperature, high-pressure refrigerant pre-cooled in the double-pipe heat exchanger (500) is supplied to the first capillary tube (610) through the first-1 pipe (301A), and the capillary injection of the pre-cooled high-temperature, high-pressure refrigerant is performed at the end of the first capillary tube (610), and the refrigerant undergoes a process of capillary cooling. The first capillary tube (610) may have an inner diameter of 1.4-1.6 mm, but as long as capillary injection is performed and the refrigerant undergoes a process of capillary cooling, there are no special restrictions on the configuration or shape of the first capillary tube (610). During cooling operation, the capillary-cooled refrigerant is supplied to the second capillary tube (620) through the second pipe (302), the second-1 pipe (302A), and the second-1-1 pipe (302A1), and the first injection of the refrigerant passing through the second capillary tube (620) is performed at the first injection nozzle (710) connected to the second capillary tube (620), and the refrigerant undergoes the process of first injection cooling. The second capillary tube (620) may have an inner diameter of 1.05-1.45 mm, but as long as it performs the function of a capillary tube, there are no special restrictions on its configuration or shape. As long as the first injection nozzle (710) connected to the second capillary tube (620) performs the function of first injection cooling, there are no special restrictions on its configuration or shape. During cooling operation, the capillary-cooled refrigerant is supplied to the third capillary tube (630) through the second pipe (302), the second-1 pipe (302A), and the second-1-2 pipe (302A2), and the second injection of the refrigerant that has passed through the third capillary tube (630) is performed at the second injection nozzle (720) connected to the third capillary tube (630), and the refrigerant undergoes a process of second injection cooling. The third capillary tube (630) may have an inner diameter of 1.05-1.45 mm, but as long as it performs the function of a capillary tube, there are no special restrictions on its configuration or shape. As long as the second injection nozzle (720) connected to the third capillary tube (630) performs the function of second injection cooling, there are no special restrictions on its configuration or shape.During cooling operation, the capillary-cooled refrigerant is supplied to the fourth capillary tube (640) through the second pipe (302) and the second-2 pipe (302B), and the third injection of the refrigerant that has passed through the fourth capillary tube (640) is performed at the third injection nozzle (730) connected to the fourth capillary tube (640), and the refrigerant undergoes a process of third injection cooling. The fourth capillary tube (640) may have an inner diameter of 1.4-1.8 mm, but as long as it performs the function of a capillary tube, there are no special restrictions on its configuration or shape. As long as the third injection nozzle (730) connected to the fourth capillary tube (640) performs the function of third injection cooling, there are no special restrictions on its configuration or shape.

[0039] The first spray nozzle (710) connected to the second capillary tube (620) may have a structure connected to the third pipe (303), the second spray nozzle (720) connected to the third capillary tube (630) may have a structure connected to the fourth pipe (304), and the third spray nozzle (730) connected to the fourth capillary tube (640) may have a structure connected to the fifth pipe (305). Additionally, the third pipe (303) connected to the first injection nozzle (710) may have a structure connected to the refrigerant confluence section (800), the fourth pipe (304) connected to the second injection nozzle (720) may have a structure connected to the first evaporator (910), and the fifth pipe (305) connected to the third injection nozzle (730) may have a structure connected to the second evaporator (920). Furthermore, the refrigerant confluence section (800) connected to the third pipe (303) may have a structure connected to the eleventh pipe (911) which is externally inserted into the exterior of the double-pipe heat exchanger (500).

[0040] During cooling operation, the first injection-cooled low-temperature, low-pressure refrigerant is supplied to the refrigerant junction (800) through the third pipe (303) connected to the first injection nozzle (710), and the first injection-cooled low-temperature, low-pressure refrigerant is supplied to the first pipe (911), which is the outer casing of the double-pipe heat exchanger (500) connected to the refrigerant junction (800). Through heat exchange between the first injection-cooled low-temperature, low-pressure refrigerant passing through the first pipe (911) and the high-temperature, high-pressure refrigerant passing through the first-1 pipe (301A), the function of pre-cooling the high-temperature, high-pressure refrigerant during cooling operation can be performed. In this case, the first injection-cooled low-temperature, low-pressure refrigerant supplied to the refrigerant junction (800) may have a temperature of 8-10℃. During cooling operation, a second injection-cooled low-temperature, low-pressure refrigerant is supplied to the first evaporator (910) through the fourth pipe (304) connected to the second injection nozzle (720). The second injection-cooled low-temperature, low-pressure refrigerant supplied to the first evaporator (910) undergoes a phase change into a gas within the first evaporator (910), absorbs heat of vaporization, exchanges heat with the cooling and heating fluid, and performs the function of cooling the cooling and heating fluid. That is, as the second injection-cooled low-temperature, low-pressure refrigerant is supplied to the first evaporator (910), it undergoes a phase change into a gas, absorbs heat of vaporization, and exchanges heat with the cooling and heating fluid, and the first evaporator (910) can perform the function of cooling the supplied cooling and heating fluid. As long as the second injection-cooled low-temperature, low-pressure refrigerant undergoes a phase change into a gas and absorbs heat of vaporization while performing the function of cooling by exchanging heat with the surrounding cooling and heating fluid, there are no special restrictions on the configuration or shape of the first evaporator (910). The types of cooling and heating fluids include air, water, brine, etc., and cooling can be performed by supplying the cooling and heating fluid, such as low-temperature air, water, or brine, which is cooled by heat exchange while the low-temperature, low-pressure refrigerant undergoes a phase change into a gas and absorbs heat of vaporization, to the cooling load.During cooling operation, the third injection-cooled low-temperature, low-pressure refrigerant is supplied to the second evaporator (920) through the fifth pipe (305) connected to the third injection nozzle (730). The third injection-cooled low-temperature, low-pressure refrigerant supplied to the second evaporator (920) undergoes a phase change into a gas within the second evaporator (920), absorbs heat of vaporization, exchanges heat with the cooling and heating fluid, and performs the function of cooling the cooling and heating fluid. That is, as the third injection-cooled low-temperature, low-pressure refrigerant is supplied to the second evaporator (920), it undergoes a phase change into a gas, absorbs heat of vaporization, and exchanges heat with the cooling and heating fluid, and the second evaporator (920) can perform the function of cooling the supplied cooling and heating fluid. As long as the third injection-cooled low-temperature, low-pressure refrigerant undergoes a phase change into a gas and absorbs heat of vaporization while performing the function of cooling by exchanging heat with the surrounding cooling and heating fluid, there are no special restrictions on the configuration or form of the second evaporator (920). The types of cooling and heating fluids include air, water, brine, etc., and cooling can be performed by supplying the cooling and heating fluid, such as low-temperature air, water, or brine, which is cooled by the low-temperature, low-pressure refrigerant undergoing a phase change into a gas and absorbing heat of vaporization while exchanging heat, to the cooling load.

[0041] The first evaporator (910) connected to the fourth pipe (304) may have a structure connected to the sixth pipe (306), and the sixth pipe (306) may have a structure connected to the refrigerant junction (800). The second evaporator (920) connected to the fifth pipe (305) may have a structure connected to the seventh pipe (307), and the seventh pipe (307) may have a structure connected to the fifth capillary tube (650). Additionally, the fifth capillary tube (650) may have a structure in which a fourth injection nozzle (740) is connected, and the fifth capillary tube may have an inner diameter of 1.4-1.8 mm.

[0042] During cooling operation, the low-temperature, low-pressure refrigerant that has undergone heat exchange in the first evaporator (910) is supplied to the refrigerant confluence section (800) through the sixth pipe (306) connected to the first evaporator (910), and the low-temperature, low-pressure refrigerant that has undergone heat exchange in the first evaporator (910) is supplied to the first pipe (911), which is the outer casing of the double-pipe heat exchanger (500) connected to the refrigerant confluence section (800), thereby enabling the function of pre-cooling the high-temperature, high-pressure refrigerant during cooling operation through heat exchange between the low-temperature, low-pressure refrigerant that has undergone heat exchange in the first evaporator (910) passing through the first pipe (911) and the high-temperature, high-pressure refrigerant passing through the first-1 pipe (301A). In this case, the refrigerant heat-exchanged in the first evaporator (910) supplied to the refrigerant confluence section (800) may have a temperature of 20-28°C. During cooling operation, the low-temperature, low-pressure refrigerant heat-exchanged in the second evaporator (920) is supplied to the fifth capillary tube (650) through the seventh pipe (307) connected to the second evaporator (920), and the refrigerant passing through the fifth capillary tube (650) undergoes a fourth injection through the fourth injection nozzle (740) connected to the fifth capillary tube (650), and the refrigerant undergoes a process of fourth injection cooling. The fifth capillary tube (620) may have an inner diameter of 1.4-1.8 mm, but as long as it performs the function of a capillary tube, there are no special restrictions on its configuration or shape. As long as the fourth injection nozzle (740) connected to the fifth capillary tube (650) performs the function of fourth injection cooling, there are no special restrictions on its configuration or shape.

[0043] The fourth spray nozzle (740) connected to the fifth capillary tube (650) may have a structure connected to the eighth pipe (308). Additionally, the eighth pipe (308) connected to the fourth spray nozzle (740) may have a structure connected to the third evaporator (930). The third evaporator (930) connected to the eighth pipe (308) may have a structure connected to the ninth pipe (309), and the ninth pipe (309) may have a structure connected to the second four-way valve (420).

[0044] During cooling operation, the fourth injection-cooled low-temperature low-pressure refrigerant is supplied to the third evaporator (930) through the eighth pipe (308) connected to the fourth injection nozzle (740). The fourth injection-cooled low-temperature low-pressure refrigerant supplied to the third evaporator (930) undergoes a phase change into a gas within the third evaporator (930), absorbs heat of vaporization, exchanges heat with the cooling and heating fluid, and performs the function of cooling the cooling and heating fluid. That is, as the fourth injection-cooled low-temperature low-pressure refrigerant is supplied to the third evaporator (930), it undergoes a phase change into a gas, absorbs heat of vaporization, and exchanges heat with the cooling and heating fluid, and the third evaporator (930) can perform the function of cooling the supplied cooling and heating fluid. As long as the low-temperature, low-pressure refrigerant cooled by the fourth injection phase changes into a gas and absorbs heat of vaporization while performing the role of cooling by exchanging heat with the surrounding cooling and heating fluid, there are no special restrictions on the configuration or shape of the third evaporator (930). The types of cooling and heating fluids include air, water, brine, etc., and cooling can be performed by supplying the cooling and heating fluid, such as low-temperature air, water, or brine, which is cooled by exchanging heat while the low-temperature, low-pressure refrigerant changes into a gas and absorbs heat of vaporization, to the cooling load.

[0045] The above second four-way valve (420) may have a structure in which the first-third pipe (301C), the ninth pipe (309), the tenth pipe (310), and the eleventh pipe (311) are connected. In the above second four-way valve (420), the tenth pipe (310) may be freely connected to the first-third pipe (301C), the ninth pipe (309), and the eleventh pipe (311), and the first-third pipe (301C), the ninth pipe (309), and the eleventh pipe (311) may also be freely connected to each other. During cooling operation, the first-third pipe (301C) and the eleventh pipe (311) can be connected at the second four-way valve (420), and the ninth pipe (309) and the tenth pipe (310) can be connected. During heating operation, the first-third pipe (301C) and the ninth pipe (309) can be connected at the second four-way valve (420), and the tenth pipe (310) and the eleventh pipe (311) can be connected. During cooling operation, the low-temperature, low-pressure refrigerant, which is preheated while passing through the eleventh pipe (311), can pass through the eleventh pipe (311) and then through the first-third pipe (301C). During heating operation, the high-temperature, high-pressure refrigerant can pass through the first pipe (301) and the first-third pipe (301C).

[0046] The second four-way valve (420) connected to the ninth pipe (309) may have a structure in which the first-third pipe (301C), the tenth pipe (310), and the eleventh pipe (311) are connected. The first-third pipe (301C) connected to the second four-way valve (420) may have a structure in which it is connected to the first four-way valve (410).

[0047] During cooling operation, the low-temperature, low-pressure refrigerant that has undergone heat exchange in the third evaporator (930) is supplied to the second four-way valve (420) through the ninth pipe (309) connected to the third evaporator (930), and during cooling operation, when the ninth pipe (309) and the tenth pipe (310) are connected at the second four-way valve (420), the low-temperature, low-pressure refrigerant that has undergone heat exchange in the third evaporator (930) is supplied to the refrigerant confluence section (800) through the ninth pipe (309) and the tenth pipe (310) at the second four-way valve (420), and the low-temperature, low-pressure refrigerant that has undergone heat exchange in the third evaporator (930) is supplied to the outer surface of the double-pipe heat exchanger (500) connected to the refrigerant confluence section (800). It can perform the function of pre-cooling the high-temperature, high-pressure refrigerant during cooling operation through heat exchange between the low-temperature, low-pressure refrigerant that is heat-exchanged in the third evaporator (930) passing through the first pipe (911) and the high-temperature, high-pressure refrigerant passing through the first-1 pipe (301A). In this case, the refrigerant that is heat-exchanged in the third evaporator (930) supplied to the refrigerant junction (800) may have a temperature of 8-10℃.

[0048] During cooling operation, the first-third pipe (301C) and the eleventh pipe (311) are connected at the second four-way valve (420), and the first-third pipe (301C) and the first-second pipe (301B) are connected at the first four-way valve (410). Then, the low-temperature, low-pressure refrigerant, which is preheated while passing through the eleventh pipe (311), is supplied to the second four-way valve (420). The preheated low-temperature, low-pressure refrigerant supplied to the second four-way valve (420) passes through the eleventh pipe (311) and the first-third pipe (301C) at the second four-way valve (420) and is supplied to the first four-way valve (410). The preheated low-temperature, low-pressure refrigerant supplied to the first four-way valve (410) passes through the first-3 pipe (301C1) and the first-2 pipe (301B) from the first four-way valve (410) and is supplied to the compressor (100).

[0049] During cooling operation, the high-temperature, high-pressure refrigerant before cooling can pass through the first pipe (301) from the first four-way valve (410) and the first-1 pipe (301A), and the low-temperature, low-pressure refrigerant after cooling can pass through the first-3 pipe (301C) from the first four-way valve (410) and the first-2 pipe (301B) to be supplied to the compressor (100). During heating operation, the high-temperature, high-pressure refrigerant before heating can pass through the first pipe (301) from the first four-way valve (410) and the first-third pipe (301C), and the low-temperature, low-pressure refrigerant after heating can pass through the first-first pipe (301A) from the first four-way valve (410) and the first-second pipe (301B) to be supplied to the compressor (100).

[0050] When cooling, the first pipe (301) and the first-1 pipe (301A) are connected at the first four-way valve (410), and the first-2 pipe (301B) and the first-3 pipe (301C) are connected, and at the second four-way valve (420), the first-3 pipe (301C) and the eleventh pipe (311) are connected, and the ninth pipe (309) and the tenth pipe (310) are connected. In this case, the high-temperature, high-pressure refrigerant can pass through the first pipe (301) from the first four-way valve (410) and through the first-1 pipe (301A), and the low-temperature, low-pressure refrigerant can pass through the first-3 pipe (301C) from the first four-way valve (410) and through the first-2 pipe (301B) to be supplied to the compressor (100). In addition, in this case, the low-temperature, low-pressure refrigerant can be supplied from the second four-way valve (420) through the ninth pipe (309) and through the tenth pipe (310) to the refrigerant confluence section (800), and the preheated low-temperature, low-pressure refrigerant can be supplied from the second four-way valve (420) through the eleventh pipe (311) and through the first-third pipe (301C) to the first four-way valve (410).

[0051] When heating, the first pipe (301) and the first-third pipe (301C) are connected at the first four-way valve (410), and the first-first pipe (301A) and the first-second pipe (301B) are connected, and the first-third pipe (301C) and the ninth pipe (309) are connected at the second four-way valve (420), and the tenth pipe (310) and the eleventh pipe (311) are connected. In this case, the high-temperature, high-pressure refrigerant can pass through the first pipe (301) from the first four-way valve (410) and the first-third pipe (301C), and the low-temperature, low-pressure refrigerant can pass through the first-first pipe (301A) from the first four-way valve (410) and the first-second pipe (301B) to be supplied to the compressor (100). Also in this case, the high-temperature, low-pressure refrigerant can pass through the second four-way valve (420), the first-third pipe (301C), and the ninth pipe (309) to be supplied to the third evaporator (930), but the low-temperature, low-pressure refrigerant is not supplied to the second four-way valve (420).

[0052] During cooling, the first injection-cooled low-temperature, low-pressure refrigerant is supplied to the refrigerant confluence section (800) through the third pipe, the low-temperature, low-pressure refrigerant heat-exchanged in the first evaporator (910) is supplied through the sixth pipe, and the low-temperature, low-pressure refrigerant heat-exchanged in the third evaporator (930) can be supplied through the tenth pipe (310). However, during heating, no refrigerant confluence occurs in the refrigerant confluence section (800).

[0053] During heating operation, high-temperature, high-pressure refrigerant is supplied to the first four-way valve (410) through the first pipe (301), and at the first four-way valve (410), the first pipe (301) and the first-third pipe (301C) are connected, and the first-third pipe (301C) is connected to the second four-way valve (420), and at the second four-way valve (420), the first-third pipe (301C) and the ninth pipe (309) are connected, and the tenth pipe (310) and the eleventh pipe (311) are connected, so that high-temperature, high-pressure refrigerant is supplied to the third evaporator (930) through the first pipe (301), the first four-way valve (410), the first-third pipe (301C), the second four-way valve (420), and the ninth pipe (309), and the above The high-temperature, high-pressure refrigerant supplied to the third evaporator (930) can perform the function of exchanging heat with the cooling and heating fluid in the third evaporator (930) and heating the cooling and heating fluid. The types of cooling and heating fluids that exchange heat in the third evaporator (930) include air, water, brine, etc., and the high-temperature, high-pressure refrigerant can perform heating by exchanging heat with the surrounding cooling and heating fluid, and the heated high-temperature cooling and heating fluid, such as air, water, or brine, is supplied to the heating load. The refrigerant that has passed through the third evaporator (930) is supplied to the fourth injection nozzle (740) through the eighth pipe (308), and the refrigerant that has passed through the fourth injection nozzle (740) is supplied to the second evaporator (920) through the fifth capillary tube (650) and the seventh pipe (307). The high-temperature, high-pressure refrigerant supplied to the second evaporator (920) can perform the function of exchanging heat with the cooling and heating fluid in the second evaporator (920) and heating the cooling and heating fluid. The types of cooling and heating fluids that exchange heat in the second evaporator (920) include air, water, brine, etc., and the high-temperature, high-pressure refrigerant can perform heating by exchanging heat with the surrounding cooling and heating fluid, and the heated high-temperature cooling and heating fluid, such as air, water, or brine, is supplied to the heating load.The refrigerant passing through the second evaporator (920) is supplied to the third injection nozzle (730) through the fifth pipe (305), and the refrigerant passing through the third injection nozzle (730) is supplied to the first capillary tube (610) through the fourth capillary tube (640), the second-second pipe (302B), and the second pipe (302), and the refrigerant passing through the first capillary tube (610) is supplied to the first four-way valve (410) via the first-first pipe (301A) which is introduced into the inner tube of the double-pipe heat exchanger (500), and the first-first pipe (301A) and the first-second pipe (301B) are connected at the first four-way valve (410), and the low-temperature, low-pressure refrigerant is supplied from the first four-way valve (410) to the first-first pipe (301A) and It may have the characteristic of being supplied to the compressor through the 1st-2nd pipe (301B).

[0054] In a heating and cooling device that improves energy efficiency by combining a capillary tube and a spray nozzle according to an embodiment of the present invention, the first capillary tube (610): the second capillary tube (620): the third capillary tube (630): the fourth capillary tube (640): the fifth capillary tube (650) may be characterized by having a ratio of refrigerant spray amounts of 1,900-2,100:160-260:160-260:900-1,100:820-920. If the ratio of refrigerant injection amounts of the first capillary tube (610), the second capillary tube (620), the third capillary tube (630), the fourth capillary tube (640), and the fifth capillary tube (650) deviates from the above range, effective capillary tube cooling cannot be achieved, and the condensation heat dissipation through capillary tube cooling cannot be carried out smoothly, resulting in inefficient cooling operation and a decrease in energy efficiency. Furthermore, if capillary tube cooling does not proceed smoothly, evaporation in the first evaporator (910), the second evaporator (920), and the third evaporator (930) does not proceed smoothly, so the absorption of heat of vaporization does not proceed sufficiently, and pre-cooling in the double-tube heat exchanger (500) does not proceed smoothly, resulting in inefficient cooling operation and a decrease in energy efficiency.

[0055] In a cooling and heating device that improves energy efficiency by using a combination of a capillary tube and a spray nozzle according to an embodiment of the present invention, the first spray nozzle (710): the second spray nozzle (720): the third spray nozzle (730): the fourth spray nozzle (740) may be characterized by having a refrigerant spray amount ratio of 3.5-5.5:3.5-5.5:700-800:20-25. If the refrigerant spray amount ratio of the first spray nozzle (710), the second spray nozzle (720), the third spray nozzle (730), and the fourth spray nozzle (740) deviates from the above range, efficient pressure reduction and spray amount control cannot be performed, and the condensation heat dissipation through spray cooling cannot be smoothly performed, so efficient cooling operation cannot be performed and a problem of reduced energy efficiency may occur. In addition, if spray cooling does not proceed smoothly, evaporation in the first evaporator (910), second evaporator (920), and third evaporator (930) does not proceed smoothly, so the absorption of heat of vaporization does not proceed sufficiently, and pre-cooling in the double-tube heat exchanger (500) does not proceed smoothly, so cooling operation cannot proceed efficiently and a problem of reduced energy efficiency may occur.

[0056] In a heating and cooling device that improves energy efficiency by combining a capillary tube and a spray nozzle according to an embodiment of the present invention, the first capillary tube may have a refrigerant spray amount of 1,900-2,100 l / hour, the second capillary tube may have a refrigerant spray amount of 160-260 l / hour, the third capillary tube may have a refrigerant spray amount of 160-260 l / hour, the fourth capillary tube may have a refrigerant spray amount of 900-1,100 l / hour, and the fifth capillary tube may have a refrigerant spray amount of 820-920 l / hour. If the amount of refrigerant injected by the first capillary tube (610), the second capillary tube (620), the third capillary tube (630), the fourth capillary tube (640), and the fifth capillary tube (650) exceeds the above range, effective capillary tube cooling cannot proceed, and the condensation heat dissipation through capillary tube cooling cannot proceed smoothly, resulting in inefficient cooling operation and a problem of reduced energy efficiency. Furthermore, if capillary tube cooling does not proceed smoothly and evaporation in the first evaporator (910), the second evaporator (920), and the third evaporator (930) does not proceed smoothly, the absorption of heat of vaporization does not proceed sufficiently, and pre-cooling in the double-tube heat exchanger (500) cannot proceed smoothly, resulting in inefficient cooling operation and a problem of reduced energy efficiency.

[0057] In a cooling and heating device that improves energy efficiency by using a combination of a capillary tube and a spray nozzle according to an embodiment of the present invention, the first spray nozzle may have a refrigerant spray amount of 3.5-5.5 l / hour, the second spray nozzle may have a refrigerant spray amount of 3.5-5.5 l / hour, the third spray nozzle may have a refrigerant spray amount of 700-800 l / hour, and the fourth spray nozzle may have a refrigerant spray amount of 20-25 l / hour. If the refrigerant spray amounts of the first spray nozzle (710), the second spray nozzle (720), the third spray nozzle (730), and the fourth spray nozzle (740) fall outside the above ranges, efficient pressure reduction and spray amount control cannot be performed, and the condensation heat dissipation through spray cooling cannot be smoothly performed, so efficient cooling operation cannot be performed, and a problem of reduced energy efficiency may occur. In addition, if spray cooling is not carried out smoothly and evaporation in the first evaporator (910), second evaporator (920), and third evaporator (930) is not carried out smoothly, the absorption of heat of vaporization is not carried out sufficiently, and pre-cooling in the double-tube heat exchanger (500) is not carried out smoothly, so the cooling operation cannot be carried out efficiently and a problem of reduced energy efficiency may occur.

[0058] FIG. 3 is a diagram showing the sequence of a cooling operation method using a cooling and heating device that improves energy efficiency by combining a capillary tube and a spray nozzle according to an embodiment of the present invention.

[0059] According to FIG. 3, a cooling operation method using a cooling and heating device that improves energy efficiency by combining a capillary tube and a spray nozzle according to an embodiment of the present invention comprises the steps of: compressing a low-temperature, low-pressure refrigerant into a high-temperature, high-pressure refrigerant in a compressor (100); removing moisture from the high-temperature, high-pressure refrigerant in a dryer (200); supplying the high-temperature, high-pressure refrigerant to a first four-way valve (410) through a first pipe (301) connected to the dryer (200); connecting the first pipe (301) and the first-1 pipe (301A) at the first four-way valve (410), with the first-1 pipe (301A) inserted into the inner pipe and the first pipe (311) inserted into the outer pipe to form a double-pipe heat exchanger (500), and through heat exchange between the high-temperature, high-pressure refrigerant in the inner pipe of the double-pipe heat exchanger (500) and the low-temperature, low-pressure refrigerant in the outer pipe A step in which a high-temperature, high-pressure refrigerant undergoes a pre-cooling process in the first-1 pipe (301A), and the high-temperature, high-pressure refrigerant is supplied to the first capillary tube (610) through the first-1 pipe (301A); a step in which capillary injection of the refrigerant occurs at the end of the first capillary tube (610), and the refrigerant is supplied to the second capillary tube (620) through the second pipe (302) connected to the end of the first capillary tube (610) where capillary injection occurs, the second-1 pipe (302A) branching from the second pipe (302), and the second-1-1 pipe (302A1) branching from the second-1 pipe (302A), and the refrigerant is injected through the first injection nozzle (710) connected to the second capillary tube (620); a step in which capillary injection of the refrigerant occurs at the end of the first capillary tube (610), and the capillary A step of supplying refrigerant to a third capillary tube (630) through a second pipe (302) connected to the end of a first capillary tube (610) where injection takes place, a second-1 pipe (302A) branched from the second pipe (302), and a second-1-2 pipe (302A2) branched from the second-1 pipe (302A), and injecting refrigerant through a second injection nozzle (720) connected to the third capillary tube (630), wherein capillary injection of refrigerant takes place at the end of the first capillary tube (610), andA step of supplying refrigerant to a fourth capillary tube (640) through a second pipe (302) connected to the end of a first capillary tube (610) where capillary injection takes place, and a second-2 pipe (302B) branched from the second pipe (302), and spraying refrigerant through a third injection nozzle (730) connected to the fourth capillary tube (640); a step of supplying the refrigerant sprayed through the first injection nozzle (710) to a refrigerant confluence section (800) through the third pipe (303); a step of supplying the refrigerant sprayed through the second injection nozzle (720) to a first evaporator (910) through the fourth pipe (304); a step of supplying the refrigerant sprayed through the third injection nozzle (730) to a second evaporator (920) through the fifth pipe (305). A step of supplying the refrigerant that has passed through the first evaporator (910) to the refrigerant confluence section (800) through the sixth pipe (306), a step of supplying the refrigerant that has passed through the second evaporator (920) to the fifth capillary tube (650) through the seventh pipe (307), and a step of spraying the refrigerant through the fourth spray nozzle (740) connected to the fifth capillary tube (650), a step of supplying the refrigerant sprayed through the fourth spray nozzle (740) to the third evaporator (930) through the eighth pipe (308), a step of supplying the refrigerant that has passed through the third evaporator (930) to the second four-way valve (420) through the ninth pipe (309), and a step of connecting the ninth pipe (309) and the tenth pipe (310) at the second four-way valve (420). A step of supplying the refrigerant supplied to the second four-way valve (420) to the refrigerant confluence section (800) through the tenth pipe (310), supplying the refrigerant to the refrigerant confluence section (800) through the third pipe (303), the sixth pipe (306), and the tenth pipe (310), and connecting the eleventh pipe (311) to the refrigerant confluence section (800), and forming a double-pipe heat exchanger (500) by inserting the first-1 pipe (301A) into the inner pipe and the eleventh pipe (311) into the outer pipe, and preheating the low-temperature, low-pressure refrigerant in the eleventh pipe (311) through heat exchange between the high-temperature, high-pressure refrigerant in the inner pipe of the double-pipe heat exchanger (500) and the low-temperature, low-pressure refrigerant in the outer pipe, and the eleventh pipe (311) to the second four-way valve (420). Connected,The method comprises the steps of connecting the 11th pipe (311) and the 1st-3rd pipe (301C) at the 2nd four-way valve (420), supplying the refrigerant supplied to the 2nd four-way valve (420) to the 1st four-way valve (410) through the 1st-3rd pipe (301C), and connecting the 1st-3rd pipe (301C) and the 1st-2nd pipe (301B) at the 1st four-way valve (410), and supplying the low-temperature, low-pressure refrigerant to the compressor (100) through the 1st-2nd pipe (301B).

[0060] During cooling operation, the high-temperature, high-pressure refrigerant compressed in the compressor (100) is sequentially cooled by capillary cooling as it passes through the first capillary tube (610), the second capillary tube (620), the third capillary tube (630), the fourth capillary tube (640), and the fifth capillary tube (650). Since the capillary cooling is performed without an outdoor unit, the condensation heat is smoothly relieved, and the cooling operation is carried out in an energy-efficient manner. Furthermore, the high-temperature, high-pressure refrigerant is sprayed and cooled at the first spray nozzle (710), the second spray nozzle (720), the third spray nozzle (730), and the fourth spray nozzle (740) to change it into low-temperature, low-pressure refrigerant, thereby allowing the condensation heat to be smoothly relieved and the cooling operation to be carried out in an energy-efficient manner. As a result, it was confirmed that an energy saving effect of about 30% is achieved compared to the conventional cooling operation. In addition, at this time, by including the process of pre-cooling the high-temperature, high-pressure gaseous refrigerant through heat exchange between the high-temperature, high-pressure gaseous refrigerant in the inner tube of the double-tube heat exchanger (500) and the low-temperature, low-pressure gaseous refrigerant in the outer tube prior to the step of capillary cooling or spray cooling the high-temperature, high-pressure gaseous refrigerant, efficient capillary cooling and spray cooling are possible through pre-cooling of the high-temperature, high-pressure gaseous refrigerant compressed in the compressor (100), and condensation heat can be more smoothly relieved and cooling operation can be carried out more energy-efficiently through the combined pressure reduction of pre-cooling, capillary cooling, and spray cooling, and the appropriate control of the spray amount of capillary cooling and spray cooling. In addition, during the heat exchange process between the high-temperature, high-pressure refrigerant in the inner tube of the double-tube heat exchanger (500) and the low-temperature, low-pressure refrigerant in the outer tube, three types of low-temperature, low-pressure refrigerants—the first injection-cooled low-temperature, low-pressure refrigerant, the low-temperature, low-pressure refrigerant that was heat-exchanged in the first evaporator (910), and the low-temperature, low-pressure refrigerant that was heat-exchanged in the third evaporator (930)—are used as the low-temperature, low-pressure refrigerant supplied to the outer tube. This allows for more energy-efficient and stable pre-cooling, increases the efficiency of subsequent capillary cooling and injection cooling, and facilitates the smoother dissipation of condensation heat, thereby enabling more economical cooling operation.

[0061] FIG. 4 is a diagram showing the sequence of a heating operation method using a heating and cooling device that improves energy efficiency by combining a capillary tube and a spray nozzle according to an embodiment of the present invention.

[0062] According to FIG. 4, a heating operation method using a heating and cooling device that improves energy efficiency by combining a capillary tube and a spray nozzle according to an embodiment of the present invention comprises the steps of: compressing a low-temperature, low-pressure refrigerant into a high-temperature, high-pressure refrigerant in a compressor (100); removing moisture from the high-temperature, high-pressure refrigerant in a dryer (200); supplying the high-temperature, high-pressure refrigerant to a first four-way valve (410) through a first pipe (301) connected to the dryer (200); connecting the first pipe (301) and the first-third pipe (301C) at the first four-way valve (410), connecting the first-third pipe (301C) to a second four-way valve (420), connecting the first-third pipe (301C) and the ninth pipe (309) at the second four-way valve (420), and connecting the tenth pipe (310) and A step of supplying high-temperature, high-pressure refrigerant to a third evaporator (930) through the first-third pipe (301C), the second four-way valve (420), and the ninth pipe (309) by connecting the eleventh pipe (311), a step of supplying the refrigerant that has passed through the third evaporator (930) to a fourth injection nozzle (740) through the eighth pipe (308), a step of supplying the refrigerant that has passed through the fourth injection nozzle (740) to a second evaporator (920) through the fifth capillary tube (650) and the seventh pipe (307), a step of supplying the refrigerant that has passed through the second evaporator (920) to a third injection nozzle (730) through the fifth pipe (305), and a step of supplying the refrigerant that has passed through the third injection nozzle (730) to the fourth capillary tube (640). The method comprises the steps of supplying to the first capillary tube (610) through the second-2 pipe (302B) and the second pipe (302), supplying the refrigerant that has passed through the first capillary tube (610) to the first four-way valve (410) via the first-1 pipe (301A), and connecting the first-1 pipe (301A) and the first-2 pipe (301B) at the first four-way valve (410), and supplying the refrigerant to the compressor (100) through the first-2 pipe (301B).

[0063] During heating operation, the first pipe (301) and the first-third pipe (301C) are connected at the first four-way valve (410), and the first-first pipe (301A) and the first-second pipe (301B) are connected; and at the second four-way valve (420), the first-third pipe (301C) and the ninth pipe (309) are connected, and the tenth pipe (310) and the eleventh pipe (311) are connected. Since there is a characteristic that during heating operation, the refrigerant is not supplied to the eleventh pipe, the second capillary tube (620), the third capillary tube (630), the first injection nozzle (710), the second injection nozzle (720), and the first evaporator (910), which are the outer parts of the double-pipe heat exchanger (500), and the inner part of the double-pipe heat exchanger (500) The first pipe (301A), the first capillary tube (610), the fourth capillary tube (640), the fifth capillary tube (650), the third spray nozzle (730), the fourth spray nozzle (740), the second evaporator (920), and the third evaporator (930) may have the feature of supplying refrigerant.

[0064] As described above, the present invention has been explained with reference to the embodiments illustrated in the drawings, but this is merely illustrative, and it should be understood that various modifications and equivalent alternative embodiments are possible based on the ordinary knowledge of the art to which the technology belongs. Accordingly, the true technical scope of protection of the present invention is determined by the claims described below and should be determined with reference to the specific details of the invention described above.

[0065] Furthermore, the present invention is not limited to the specific preferred embodiments described above, and anyone with ordinary knowledge in the art to which the invention pertains can make various modifications without departing from the essence of the invention as claimed in the claims, and all such modifications will be within the scope of the claims. Industrial applicability

[0067] The present invention relates to a cooling and heating device that improves energy efficiency by combining a capillary tube and a spray nozzle, and a cooling operation method and a heating operation method using the same. It can be utilized in related industrial fields that perform efficient cooling and heating by combining a capillary tube and a spray nozzle.

[0068] No content Explanation of the symbols

[0069] 100: Compressor 200: Dryer 301: 1st pipe 301A: Piping No. 1-1 301B: Piping 1-2 301C: Piping No. 1-3 302: Second pipe 302A: Piping No. 2-1 302A1: Piping 2-1-1 302A2: Piping No. 2-1-2 302B: Piping No. 2-2 303: Third pipe 304: 4th pipe 305: 5th pipe 306: 6th pipe 307: 7th pipe 308: 8th pipe 309: 9th pipe 310: 10th pipe 311: Piping No. 11 410: First four-way valve 420: Second four-way valve 500: Double-pipe heat exchanger 610: First Capillary 620: Second Capillary 630: The Third Capillary 640: The Fourth Capillary 650: The 5th Capillary 710: First injection nozzle 720: Second injection nozzle 730: Third injection nozzle 740: 4th injection nozzle 800: Refrigerant junction 910: 1st evaporator 920: Second evaporator 930: Third evaporator

Claims

Claim 1 A compressor for compressing a low-temperature, low-pressure refrigerant into a high-temperature, high-pressure refrigerant; a dryer connected to the compressor; a first pipe connected to the dryer; a first four-way valve connected to the first pipe; a double-pipe heat exchanger for pre-cooling the high-temperature, high-pressure refrigerant through heat exchange between the high-temperature, high-pressure refrigerant and the low-temperature, low-pressure refrigerant; a first-1 pipe connected to the first four-way valve and inserted into the inner pipe of the double-pipe heat exchanger; a first-2 pipe connected to the first four-way valve and connected to the compressor. A first-to-third pipe connected to the first four-way valve; a first capillary tube connected to the first-to-first pipe; a second four-way valve connected to the first-to-third pipe; a second pipe where capillary spraying occurs at the end of the first capillary tube and branches into a second-to-first pipe and a second-to-second pipe connected to the end of the first capillary tube where capillary spraying occurs; a second-to-first pipe and a second-to-second pipe branching from the second-to-first pipe; a second capillary tube connected to the second-to-first pipe; a third capillary tube connected to the second-to-second pipe; a fourth capillary tube connected to the second-to-second pipe; a first spray nozzle connected to the second capillary tube; a second spray nozzle connected to the third capillary tube; a third spray nozzle connected to the fourth capillary tube; a third pipe connected to the first spray nozzle; A fourth pipe connected to the second injection nozzle; a fifth pipe connected to the third injection nozzle; a refrigerant confluence connected to the third pipe; a first evaporator connected to the fourth pipe; a second evaporator connected to the fifth pipe; a sixth pipe connected to the first evaporator and connected to the refrigerant confluence; a seventh pipe connected to the second evaporator; a fifth capillary tube connected to the seventh pipe; a fourth injection nozzle connected to the fifth capillary tube; an eighth pipe connected to the fourth injection nozzle; a third evaporator connected to the eighth pipe; a ninth pipe connected to the third evaporator and connected to the second four-way valve; a tenth pipe connected to the second four-way valve and connected to the refrigerant confluence; a refrigerant confluence connected to the refrigerant confluence where the third pipe, the sixth pipe, and the tenth pipe merge, which is externally inserted into the outer surface of the double-pipe heat exchanger and connected to the second four-way valve. Piping No. 11;A cooling and heating device that improves energy efficiency by using a combination of a capillary tube and a spray nozzle, comprising: a first four-way valve in which, during cooling, the first pipe and the first-1 pipe are connected and the first-2 pipe and the first-3 pipe are connected, and the second four-way valve in which the first-3 pipe and the eleventh pipe are connected and the ninth pipe and the tenth pipe are connected; and during heating, the first four-way valve in which the first pipe and the first-3 pipe are connected and the first-1 pipe and the first-2 pipe are connected, and the second four-way valve in which the first-3 pipe and the ninth pipe are connected and the tenth pipe and the eleventh pipe are connected. Claim 2 A heating and cooling device that improves energy efficiency by using a combination of a capillary tube and a spray nozzle, characterized in that, in claim 1, the first capillary tube: the second capillary tube: the third capillary tube: the fourth capillary tube: the fifth capillary tube have a ratio of refrigerant injection amounts of 1,900-2,100:160-260:160-260:900-1,100:820-920. Claim 3 A heating and cooling device that improves energy efficiency by using a combination of a capillary tube and a spray nozzle, characterized in that, in claim 1, the first spray nozzle: the second spray nozzle: the third spray nozzle: the fourth spray nozzle have a refrigerant injection amount ratio of 3.5-5.5:3.5-5.5:700-800:20-25. Claim 4 A heating and cooling device that improves energy efficiency by using a combination of a capillary tube and a spray nozzle, characterized in that, in claim 1, the first capillary tube has a refrigerant injection amount of 1,900-2,100 l / hour, the second capillary tube has a refrigerant injection amount of 160-260 l / hour, the third capillary tube has a refrigerant injection amount of 160-260 l / hour, the fourth capillary tube has a refrigerant injection amount of 900-1,100 l / hour, and the fifth capillary tube has a refrigerant injection amount of 820-920 l / hour. Claim 5 A heating and cooling device that improves energy efficiency by using a combination of a capillary tube and a spray nozzle, characterized in that, in claim 1, the first spray nozzle has a refrigerant spray amount of 3.5-5.5 l / hour, the second spray nozzle has a refrigerant spray amount of 3.5-5.5 l / hour, the third spray nozzle has a refrigerant spray amount of 700-800 l / hour, and the fourth spray nozzle has a refrigerant spray amount of 20-25 l / hour. Claim 6 A step of compressing low-temperature, low-pressure refrigerant into high-temperature, high-pressure refrigerant in a compressor; a step of removing moisture from the high-temperature, high-pressure refrigerant in a dryer; a step of supplying the high-temperature, high-pressure refrigerant to a first four-way valve through a first pipe connected to the dryer; a step in which the first pipe and the first-1 pipe are connected at the first four-way valve, and the first-1 pipe is inserted into the inner pipe and the eleventh pipe is inserted into the outer pipe to form a double-pipe heat exchanger, wherein the high-temperature, high-pressure refrigerant in the first-1 pipe undergoes a process of pre-cooling through heat exchange between the high-temperature, high-pressure refrigerant in the inner pipe of the double-pipe heat exchanger and the low-temperature, low-pressure refrigerant in the outer pipe, and the high-temperature, high-pressure refrigerant is supplied to a first capillary tube through the first-1 pipe; A step of performing capillary injection of refrigerant at the end of the first capillary tube, supplying refrigerant to the second capillary tube through a second pipe connected to the end of the first capillary tube where capillary injection takes place, a second-1 pipe branching from the second pipe, and a second-1-1 pipe branching from the second-1 pipe, and injecting refrigerant through a first injection nozzle connected to the second capillary tube; a step of performing capillary injection of refrigerant at the end of the first capillary tube, supplying refrigerant to the third capillary tube through a second pipe connected to the end of the first capillary tube where capillary injection takes place, a second-1 pipe branching from the second pipe, and a second-1-2 pipe branching from the second-1 pipe, and injecting refrigerant through a second injection nozzle connected to the third capillary tube; a step of performing capillary injection of refrigerant at the end of the first capillary tube, and a second pipe connected to the end of the first capillary tube where capillary injection takes place and A step of supplying refrigerant to a fourth capillary tube through a second-2 pipe branching from a second pipe, and injecting refrigerant through a third injection nozzle connected to the fourth capillary tube; a step of supplying refrigerant injected through a first injection nozzle to a refrigerant confluence through a third pipe; a step of supplying refrigerant injected through a second injection nozzle to a first evaporator through a fourth pipe; a step of supplying refrigerant injected through a third injection nozzle to a second evaporator through a fifth pipe; a step of supplying refrigerant that has passed through the first evaporator to a refrigerant confluence through a sixth pipe;A step of supplying the refrigerant that has passed through the second evaporator to the fifth capillary tube through the seventh pipe and injecting the refrigerant through the fourth injection nozzle connected to the fifth capillary tube; a step of supplying the refrigerant injected through the fourth injection nozzle to the third evaporator through the eighth pipe; a step of supplying the refrigerant that has passed through the third evaporator to the second four-way valve through the ninth pipe; a step in which the ninth pipe and the tenth pipe are connected at the second four-way valve, and the refrigerant supplied to the second four-way valve is supplied to the refrigerant confluence section through the tenth pipe; a step in which refrigerant is supplied to the refrigerant confluence section through the third pipe, the sixth pipe, and the tenth pipe, and the eleventh pipe is connected to the refrigerant confluence section, and the first-1 pipe is inserted into the inner pipe and the eleventh pipe is inserted into the outer pipe to form a double-pipe heat exchanger, and through heat exchange between the high-temperature, high-pressure refrigerant in the inner pipe of the double-pipe heat exchanger and the low-temperature, low-pressure refrigerant in the outer pipe A cooling operation method using a cooling and heating device that improves energy efficiency by combining a capillary tube and a spray nozzle, comprising: a step in which a low-temperature, low-pressure refrigerant is preheated in a 11th pipe; a step in which the 11th pipe is connected to a 2nd four-way valve, and the 11th pipe and the 1-3 pipe are connected at the 2nd four-way valve, and the refrigerant supplied to the 2nd four-way valve is supplied to the 1st four-way valve through the 1-3 pipe; and a step in which the 1-3 pipe and the 1-2 pipe are connected at the 1st four-way valve, and the low-temperature, low-pressure refrigerant is supplied to the compressor through the 1-2 pipe. Claim 7 delete

Images