Air refrigerant type air conditioning device, control method for air refrigerant type air conditioning device, and program

Abstract

To provide an air refrigerant type air conditioning device, a control method for the air refrigerant type air conditioning device, and a program that can supply cooling air and heating air into an air-conditioned room without using a heating device such as a heater.SOLUTION: An air refrigerant type air conditioning device comprises: a compressor; an expander; an air blower; a first heat exchanger for exchanging heat between air discharged by the air blower, and the air discharged by the expander; a second heat exchanger for cooling the air discharged by the compressor; a first flow passage for supplying cooling air that is the air discharged by the air blower, and heat-exchanged by the first heat exchanger, into an air-conditioned room; a second flow passage for supplying heating air heat-exchanged by the second heat exchanger, into the air-conditioned room; and a control device for operating the compressor, the expander, and the air blower when supplying the cooling air and the heating air to the air-conditioned room, and operating the compressor when supplying the heating air to the air-conditioned room.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to an air refrigerant type air conditioner, and a control method and program for an air refrigerant type air conditioner. [Background technology]

[0002] Patent Document 1 discloses an air refrigerant type air conditioner that uses air as a refrigerant for air conditioning. This air refrigerant type air conditioner includes a compressor, an electric motor that rotates the compressor, an expansion turbine that is arranged coaxially with the compressor, a blower that blows air to be supplied to the room, a heat exchanger that exchanges heat between the air discharged from the expansion turbine and the air to be supplied to the room, and a heater that heats and increases the temperature of the air to be supplied to the room. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] European Patent No. 1177961 Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure provides an air refrigerant type air conditioner that can supply air for cooling and air for heating into an air-conditioned room without using a heating device such as a heater, and a control method and program for an air refrigerant type air conditioner. [Means for solving the problem]

[0005] An air refrigerant type air conditioner in the present disclosure includes a compressor that compresses air, an expander that expands the air, a blower that blows the air, a first heat exchanger that performs heat exchange between the air discharged by the blower and the air discharged by the expander, a second heat exchanger that cools the air discharged by the compressor, a first flow path that supplies the air discharged by the blower, which is cooling air after heat exchange by the first heat exchanger, into an air-conditioned room, and a second flow path that supplies heating air after heat exchange by the second heat exchanger into the air-conditioned room, and a control device that operates the compressor, the expander, and the blower when the cooling air and the heating air are supplied to the air-conditioned room, and operates the compressor when the heating air is supplied to the air-conditioned room.

[0006] The air refrigerant type air conditioner of the present disclosure comprises: a compressor that compresses air, a third heat exchanger that cools the air discharged from the compressor, a fourth heat exchanger that cools the air discharged from the compressor, an expander that expands the air cooled by the third heat exchanger, a fifth flow path that supplies the air discharged from the expander to an air-conditioned room as air for cooling, a sixth flow path that supplies the air discharged from the compressor and that has been heat exchanged by the fourth heat exchanger to the air-conditioned room as air for heating, and a control device that operates the compressor and the expander when the air for cooling and the air for heating are supplied to the air-conditioned room.

[0007] A control method for an air refrigerant type air conditioner in the present disclosure is a control method for an air refrigerant type air conditioner comprising a compressor that compresses air, an expander that expands the air, a blower that blows the air, a first heat exchanger that performs heat exchange between the air discharged by the blower and the air discharged by the expander, a second heat exchanger that cools the air discharged by the compressor, a first flow path that supplies the air discharged by the blower, which is air for cooling after heat exchange by the first heat exchanger, into an air-conditioned room, and a second flow path that supplies the air for heating after heat exchange by the second heat exchanger into the air-conditioned room, wherein the control method for an air refrigerant type air conditioner causes a computer mounted on the air refrigerant type air conditioner to operate the compressor, the expander, and the blower when the cooling air and the heating air are supplied to the air-conditioned room, and to operate the compressor when the heating air is supplied to the air-conditioned room.

[0008] A control method for an air refrigerant type air conditioner in the present disclosure is a control method for an air refrigerant type air conditioner comprising: a compressor that compresses air, a third heat exchanger that cools the air discharged from the compressor, a fourth heat exchanger that cools the air discharged from the compressor, an expander that expands the air cooled by the third heat exchanger, a fifth flow path that supplies the air discharged from the expander to an air-conditioned room as air for cooling, and a sixth flow path that supplies the air discharged from the compressor, which has been heat exchanged by the fourth heat exchanger, to the air-conditioned room as air for heating, the control method comprising causing a computer mounted on the air refrigerant type air conditioner to operate the compressor and the expander when the air for cooling and the air for heating are supplied to the air-conditioned room, and to operate the compressor when the air for heating is supplied to the air-conditioned room.

[0009] The program in the present disclosure is a program to be executed by a computer mounted on an air refrigerant type air conditioner including a compressor that compresses air, an expander that expands the air, a blower that blows the air, a first heat exchanger that performs heat exchange between the air discharged by the blower and the air discharged by the expander, a second heat exchanger that cools the air discharged by the compressor, and a first flow path that supplies the air discharged by the blower, the air for cooling after heat exchange by the first heat exchanger, into an air-conditioned room, and a second flow path that supplies the air for heating after heat exchange by the second heat exchanger into the air-conditioned room, the program causing the computer to execute processing to operate the compressor, the expander, and the blower when the air for cooling and the air for heating are supplied to the air-conditioned room, and to operate the compressor when the air for heating is supplied to the air-conditioned room.

[0010] The program in the present disclosure is a program to be executed by a computer mounted on an air refrigerant type air conditioner having a compressor that compresses air, a third heat exchanger that cools the air discharged from the compressor, a fourth heat exchanger that cools the air discharged from the compressor, an expander that expands the air cooled by the third heat exchanger, a fifth flow path that supplies the air discharged from the expander into an air-conditioned room as air for cooling, and a sixth flow path that supplies the air discharged from the compressor and that has been heat exchanged by the fourth heat exchanger into the air-conditioned room as air for heating, and the program causes the computer to execute processing to operate the compressor and the expander when the air for cooling and the air for heating are supplied to the air-conditioned room, and to operate the compressor when the air for heating is supplied to the air-conditioned room. Effect of the Invention

[0011] In the air refrigerant type air conditioner and the control method and program for the air refrigerant type air conditioner disclosed herein, cooling air cooled by heat exchange in the first heat exchanger is supplied into the air-conditioned room via the first flow path, and high-temperature heating air discharged from the compressor is supplied into the air-conditioned room via the second flow path. Therefore, cooling air and heating air can be supplied into the air-conditioned room without using a heating device such as a heater. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a diagram showing the configuration of an air refrigerant type air conditioner according to a first embodiment. [Diagram 2] A diagram showing the configuration and connection configuration of a control device. [Diagram 3] A flowchart showing the operation of the air refrigerant type air conditioner according to the first embodiment. [Figure 4] FIG. 1 is a diagram showing a configuration of an air refrigerant type air conditioner according to a modified example of the first embodiment; [Diagram 5] FIG. 1 shows the configuration of an air refrigerant type air conditioner according to a second embodiment. [Figure 6] Flowchart showing the operation of an air refrigerant type air conditioner according to a second embodiment DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] (The knowledge and other information that formed the basis of this disclosure) At the time the inventors came up with the idea for this disclosure, the air refrigerant type air conditioner disclosed in Patent Document 1 was already known. However, while the configuration in Patent Document 1 allows for cooling and heating to be operated separately, it makes no mention of the possibility of operating the cooling and heating simultaneously. Even if simultaneous operation of the cooling and heating were possible, a heater would be required, leading to an increase in the size of the device. Therefore, the inventors discovered a problem in that with conventional configurations, it was not possible to operate the unit in both cooling and heating modes simultaneously unless a heating device such as a heater was used, and in order to solve this problem, they came up with the subject matter of the present disclosure. In view of the above, an object of the present disclosure is to provide an air refrigerant type air conditioner that can perform cooling and heating operations simultaneously without using a heating device such as a heater.

[0014] Hereinafter, the embodiments will be described in detail with reference to the drawings. However, in some cases, more detailed explanations than necessary may be omitted. For example, detailed explanations of already well-known matters or duplicate explanations of substantially the same configurations may be omitted. It should be noted that the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0015] (Embodiment 1) [1-1. Configuration of the air refrigerant type air conditioner according to the first embodiment] Hereinafter, an embodiment will be described with reference to the drawings. Fig. 1 is a diagram showing the configuration of an air refrigerant type air conditioner 1A. The solid lines shown in Fig. 1 indicate air flow paths, and the dashed lines shown in Fig. 1 indicate control signal lines through which control signals are transmitted and received. The air refrigerant type air conditioner 1A includes a compressor 11, motors 13, 17, an expander 15, a first heat exchanger 21, a second heat exchanger 22, a blower 30, a first control valve 41, a second control valve 42, a third control valve 43, a fourth control valve 44, a control device 100, and an outside air temperature detection unit 150.

[0016] Compressor 11 has an impeller (not shown) that is driven by the rotation of motor 13. A flow path 51 is connected to suction side 11A, which is the input side of compressor 11. A flow path 52 is connected to discharge side 11B, which is the output side of compressor 11. Compressor 11 compresses air sucked in from suction side 11A, and discharges the compressed air, which has become high temperature and high pressure, from discharge side 11B.

[0017] The other end of the flow path 51 is connected to the discharge side 15B of the expander 15. In the flow path 51, a first heat exchanger 21 and a third control valve 43 are provided. The other end of the flow passage 52 communicates with the outside of the air refrigerant type air conditioner 1 A. A fourth control valve 44 is provided in the flow passage 52.

[0018] The expander 15 includes a wheel (not shown) that is driven by the rotation of the motor 17. The suction side 15A, which is the input side of the expander 15, communicates with the outside via an inlet pipe 54. The discharge side 15B, which is the output side of the expander 15, is connected to a flow path 51. The expander 15 is driven by the rotation of the motor 17, takes in outside air as refrigerant air, and expands the taken-in air. The expander 15 discharges the expanded air, which has a low temperature and low pressure, into the flow path 51.

[0019] The first heat exchanger 21 is a plate heat exchanger, and includes a first inlet 21A, a first outlet 21B, a second inlet 21C, and a second outlet 21D. The first inlet 21A is an inlet of a flow path 51 that is piped inside the first heat exchanger 21, and the first outlet 21B is an outlet of this flow path 51. The second inlet 21C is an inlet of a flow path 55 that is piped inside the first heat exchanger 21, and the second outlet 21D is an outlet of this flow path 55.

[0020] In the first heat exchanger 21, a flow path 51 and a flow path 55 are piped and connected so that the two fluids that perform heat exchange flow in counterflow. In the first heat exchanger 21, low-temperature, low-pressure air flowing through the flow path 51 and air flowing through the flow path 55 flow in counterflow, and heat exchange is performed, cooling the air flowing through the flow path 55. The air flowing through the flow path 55 is air blown by the blower 30. The air cooled by the first heat exchanger 21 is supplied into the first air-conditioned room 210 via the flow path 55 as air for cooling. The flow path 55 corresponds to the first flow path.

[0021] The second heat exchanger 22 is a plate fin heat exchanger, and is provided in a flow path 53. One end of the flow path 53 is connected to a flow path 52 between the discharge side 11B of the compressor 11 and the fourth control valve 44, and the other end is connected to the second air conditioning chamber 220. High-temperature, high-pressure air discharged from the discharge side 11B of the compressor 11 flows into the second heat exchanger 22 via a flow path 53. The second heat exchanger 22 blows outside air using a fan (not shown) and exchanges heat with the air discharged from the compressor 11, thereby cooling the air discharged from the compressor 11. The air that has been heat exchanged by the second heat exchanger 22 is supplied to the second air-conditioned room 220 via the flow path 53 as heating air. The flow path 53 corresponds to the second flow path.

[0022] The blower 30 is a centrifugal blower. A flow path 55 is connected to the discharge side 30B, which is an outlet of the blower 30. When the blower 30 starts operating, the blower 30 takes in air by the rotation of the blower 30 and discharges the air into the flow path 55.

[0023] The first control valve 41, the second control valve 42, the third control valve 43 and the fourth control valve 44 are electrically controlled valves that open and close the flow paths.

[0024] The first control valve 41 is provided in a flow path 56. The flow path 56 is a flow path that bypasses the first heat exchanger 21. When the first control valve 41 is opened under the control of the control device 100, at least a portion of the air discharged by the blower 30 is supplied to the first air-conditioning room 210 without passing through the first heat exchanger 21. The flow path 56 corresponds to a third flow path. The first control valve 41 corresponds to a first valve.

[0025] The second control valve 42 is provided in a flow path 57. The flow path 57 corresponds to the fourth flow path, and the second control valve 42 corresponds to the second valve. The flow path 57 is connected to a flow path 51 between the suction side 11A of the compressor 11 and the third control valve 43. For example, when the amount of air sucked in by the compressor 11 is greater than the amount of air discharged by the expander 15, the control device 100 adjusts the opening degree of the second control valve 42 to allow air to flow in through the flow path 57 and cause the compressor 11 to suck in this air. In addition, when the amount of air discharged by the expander 15 is greater than the amount of air taken in by the compressor 11, the control device 100 adjusts the opening degree of the second control valve 42, thereby releasing the excess air discharged by the expander 15 that is not taken in by the compressor 11 into the atmosphere via the flow path 57.

[0026] The third control valve 43 is provided in the flow path 51. The third control valve 43 is provided in the flow path 51 between the first outlet 21B of the first heat exchanger 21 and the suction side 11A of the compressor 11. When the third control valve 43 is opened under the control of the control device 100, the expander 15 discharges air, and the air that has been heat exchanged in the first heat exchanger 21 is sucked into the compressor 11 via the flow path 51. Furthermore, when the third control valve 43 is closed by the control of the control device 100, the air discharged from the expander 15 is prevented from flowing into the compressor 11.

[0027] The fourth control valve 44 is provided in the flow path 52. The other end of the flow path 52 communicates with the outside of the air refrigerant type air conditioner 1A, so that the fourth control valve 44 is opened under the control of the control device 100, whereby the air discharged from the compressor 11 can be released into the atmosphere.

[0028] The outside air temperature detection unit 150 is a thermistor. For example, the outside air temperature detection unit 150 detects the outside air temperature at preset time intervals and outputs the detected outside air temperature to the control device 100. The control device 100 temporarily stores the input outside air temperature in the memory unit 110.

[0029] The air-conditioned room 200 to which the air refrigerant type air conditioner 1A supplies air for heating and air for cooling includes two air-conditioned rooms, a first air-conditioned room 210 and a second air-conditioned room 220. Air for cooling is supplied to the first air-conditioned room 210 via a flow path 55. Air for heating is supplied to the second air-conditioned room 220 via a flow path 53.

[0030] In this embodiment, a case will be described in which the air-conditioning room 200 has two air-conditioning rooms, a first air-conditioning room 210 and a second air-conditioning room 220. However, it may also be configured such that two areas separated by a partition or the like are provided within one air-conditioning room 200, and cooling air and heating air are supplied to these two areas, respectively.

[0031] A first receiving unit 215 is provided in the first air conditioning room 210, and a second receiving unit 225 is provided in the second air conditioning room 220. The first receiving unit 215 corresponds to a first reception unit, and the second receiving unit 225 corresponds to a second reception unit. In this embodiment, an example is shown in which the first receiving unit 215 is provided in the first air conditioning room 210, and the second receiving unit 225 is provided in the second air conditioning room 220, but a configuration in which a receiving unit is provided in only one of the first air conditioning room 210 and the second air conditioning room 220 may be used.

[0032] The first receiving unit 215 and the second receiving unit 225 receive and decode an infrared signal transmitted from a remote control (not shown). The first receiving unit 215 and the second receiving unit 225 decode the infrared signal and output an operation signal corresponding to an operated button on the remote control to the control device 100. The first receiving unit 215 and the second receiving unit 225 may be configured to receive a wireless signal such as Bluetooth from the remote control. Bluetooth is a registered trademark. When receiving a wireless signal, the first receiving unit 215 and the second receiving unit 225 may include an antenna and a receiving circuit. In addition, an operation unit that accepts a user's operation may be provided in at least one of the first air-conditioning room 210 and the second air-conditioning room 220.

[0033] FIG. 2 is a diagram showing the configuration of the control device 100 and a connection configuration of the control device 100. As shown in FIG. The control device 100 is connected to the motor 13, the motor 17, the blower 30, the first control valve 41, the second control valve 42, the third control valve 43, the fourth control valve 44, the outside air temperature detection unit 150, the first receiving unit 215 and the second receiving unit 225.

[0034] The control device 100 controls the rotation of the motor 13 and the motor 17. The compressor 11 is operated by the rotation of the motor 13, and the expander 15 is operated by the rotation of the motor 17.

[0035] The control device 100 reads out the outside air temperature T_out detected by the outside air temperature detection unit 150 from the memory unit 110. The control device 100 subtracts a preset set temperature T from the outside air temperature T_out, and compares the subtraction result T_out-T with a preset temperature difference S. The set temperature T is set, for example, within a range of 0° or more and 25° or less, and the temperature difference S is set, for example, within a range of 0° or more and 1° or less.

[0036] When T_out-T≧S, that is, when the outside air temperature T_out is equal to or higher than the set temperature T, the control device 100 performs control to close the first control valve 41 and the fourth control valve 44. Furthermore, the control device 100 opens the third control valve 43 and adjusts the opening degree of the second control valve 42. Then, the control device 100 rotates the motors 13 and 17 to operate the compressor 11 and the expander 15. Furthermore, the control device 100 operates the blower 30.

[0037] Since first control valve 41 is closed, the air discharged by blower 30 is prevented from flowing into flow path 56, and the air discharged by blower 30 flows through flow path 55 to first heat exchanger 21. Furthermore, since the fourth control valve 44 is closed, the air discharged from the compressor 11 is not released into the atmosphere through the flow path 52. In addition, by adjusting the opening degree of the second control valve 42, excess air discharged from the expander 15 that is not sucked into the compressor 11 can be released into the atmosphere via the flow path 57, or air flowing in from the flow path 57 can be sucked into the compressor 11. In addition, the third control valve 43 is opened and the compressor 11, the expander 15 and the blower 30 are operated, so that the low-temperature, low-pressure air discharged from the expander 15 flows through the flow path 51 to the first heat exchanger 21, and exchanges heat with the air discharged from the blower 30 and flowing through the flow path 55. Then, the air cooled by the heat exchange is supplied to the first air-conditioned room 210 as air for cooling.

[0038] Moreover, the air discharged from the compressor 11 is heat exchanged in the second heat exchanger 22, and the air after the heat exchange is supplied to the second air-conditioned room 220 as heating air.

[0039] Further, when T_out - T < S, that is, when the outside air temperature T_out is lower than the set temperature T, the control device 100 performs control to close the third control valve 43 and the fourth control valve 44. Further, the control device 100 performs control to open the first control valve 41 and the second control valve 42. Then, the control device 100 rotates the motor 13 to operate the compressor 115 and operates the blower 30. Thereby, air discharged from the blower 30 is supplied to the first air-conditioning chamber 210 through the flow path 56, and heating air is supplied to the second air-conditioning chamber 220 through the flow path 53.

[0040] When T_out - T < S, that is, when the outside air temperature T_out is lower than the set temperature T, the control device 100 performs control to close the fourth control valve 44. Further, the control device 100 performs control to open the first control valve 41, the second control valve 42, and the third control valve 43. Then, the control device 100 rotates the motor 13 to operate the compressor 11 and operates the blower 30. The control device 100 does not rotate the motor 17 and stops the operation of the expander 15.

[0041] Since the fourth control valve 44 is closed, the air discharged from the compressor 11 is not released into the atmosphere through the flow path 52. Since the first control valve 41 is opened, the air discharged from the blower 30 flows into the flow path 56. Further, since the operation of the expander 15 is stopped, the expander 15 does not discharge air into the flow path 51. For this reason, heat exchange by the first heat exchanger 21 is not performed, but since the outside air, which is the air discharged from the blower 30, is lower than the set temperature T, the first air-conditioning chamber 210 can be cooled by supplying the outside air to the first air-conditioning chamber 210.

[0042] Further, since the second control valve 42 is opened, air flows into the compressor 11 through the flow path 57. The high-temperature and high-pressure air discharged from the compressor 11 is heat-exchanged in the second heat exchanger 22 and supplied to the second air-conditioning chamber 220 as heating air.

[0043] The control device 100 is a computer device including a storage unit 110 and a processor 130.

[0044] The storage unit 110 includes a volatile storage device and a non-volatile storage device. The volatile storage device is, for example, a random access memory (RAM), etc. The non-volatile storage device is, for example, a read only memory (ROM), a flash memory, an electrically erasable programmable read-only memory (EEPROM), etc.

[0045] The volatile storage device is used as an operating area for the processor 130 . The non-volatile storage device stores the control program executed by the processor 130 and setting data set in the air refrigerant type air conditioner 1A.

[0046] The processor 130 is an arithmetic processing device including a processor such as a CPU (Central Processing Unit) or an MPU (Micro-Processing Unit). The processor 130 may be configured with a single processor, or may be configured with multiple processors. The processor 130 may be configured with a SoC integrated with a part or all of the storage unit 110 or other circuits. The processor 130 may be configured with a combination of a CPU that executes a program and a DSP (Digital Signal Processor) that executes a predetermined arithmetic processing. Furthermore, the processor 130 may be configured with all of its functions implemented in hardware, or may be configured using a programmable device.

[0047] [1-2. Operation of the air refrigerant type air conditioner according to the first embodiment] FIG. 3 is a flowchart showing the operation of the control device 100. The operation of the control device 100 will be described with reference to the flow chart shown in FIG. When a user presses an operation start button provided on a remote control, and an operation signal indicating that the operation start button has been pressed is input from the first receiving unit 215 or the second receiving unit 225, the control device 100 starts control.

[0048] The control device 100 judges whether or not an operation signal indicating that the operation start button has been pressed has been input from the first receiving unit 215 or the second receiving unit 225 (step S1). If an operation signal has not been input from the first receiving unit 215 or the second receiving unit 225 (step S1 / NO), the control device 100 waits until an operation signal is input from the first receiving unit 215 or the second receiving unit 225.

[0049] When an operation signal is input from the first receiving unit 215 or the second receiving unit 225 (step S1 / YES), the control device 100 reads out the outside air temperature T_out detected by the outside air temperature detection unit 150 from the storage unit 110. The control device 100 subtracts a predetermined set value T from the read outside air temperature T_out, and determines whether the subtraction result T_out-T is equal to or greater than a predetermined temperature difference S (step S2).

[0050] When T_out-T≧S (step S2 / YES), the control device 100 opens the third control valve 43 (step S3) and adjusts the opening degree of the second control valve 42 (step S4). The case of T_out-T≧S corresponds to the case where the outside air temperature is equal to or higher than a preset value.

[0051] Furthermore, the controller 100 closes the first control valve 41 (step S5), and also closes the fourth control valve 44 (step S6).

[0052] Furthermore, the control device 100 drives the motor 13 to operate the compressor 11 (step S7), and drives the motor 17 to operate the expander 15 (step S8). The control device 100 also drives the blower 30 (step S9).

[0053] Further, when the control device 100 determines that T_out - T < S (step S2 / NO), it closes the third control valve 43 (step S10) and opens the second control valve 42 (step S11). Also, the control device 100 opens the first control valve 41 (step S12) and closes the fourth control valve 44 (step S13). The case where it is determined that T_out - T < S corresponds to the case where the outside air temperature is lower than a preset value.

[0054] Next, the control device 100 drives the motor 13 to operate the compressor 11 (step S14), stops the motor 17 to stop the operation of the expander 15 (step S15). Further, the control device 100 operates the blower 30 (step S16).

[0055] Next, the control device 100 determines whether an operation signal indicating that the operation stop button provided on the remote controller has been pressed is input from the first receiving unit 215 or the second receiving unit 225 (step S17). When the operation signal indicating that the operation stop button has been pressed is not input from the first receiving unit 215 or the second receiving unit 225 (step S17 / NO), the control device 100 returns to the determination in step S2.

[0056] Also, when the control device 100 receives an operation signal indicating that the operation stop button has been pressed from the first receiving unit 215 or the second receiving unit 225 (step S17 / YES), it stops driving the motor 13 to stop the operation of the compressor 11 (step S18). Also, the control device 100 stops driving the motor 17 to stop the operation of the expander 15 (step S19). Further, the control device 100 also stops the operation of the blower 30 (step S20).

[0057] Next, the control device 100 closes the third control valve 43 (step S21) and closes the second control valve (step S22). Also, the control device 100 closes the first control valve 41 (step S23) and closes the fourth control valve 44 (step S24).

[0058] [1-3. Effects, etc.] As described above, in the air refrigerant type air conditioner 1A of the first embodiment, cooling air cooled by heat exchange in the first heat exchanger 21 is supplied into the first air-conditioned room 210 via the flow path 55, and high-temperature heating air discharged from the compressor 11 is supplied into the second air-conditioned room 220 via the flow path 53. Therefore, cooling air and heating air can be supplied into the air-conditioned room without using a heating device such as a heater.

[0059] Furthermore, when the outside air temperature detected by the outside air temperature detection unit 150 is lower than a preset value, the air discharged by the blower 30 can be supplied to the first air-conditioning chamber 210 via the flow path 56. Therefore, the inside of the first air-conditioning chamber 210 can be cooled without operating the compressor 11 or the expander 15.

[0060] Furthermore, when the outside air temperature detected by the outside air temperature detection unit 150 is equal to or higher than a preset value, air-conditioning air cooled by heat exchange in the first heat exchanger 21 is supplied into the first air-conditioning room 210. Therefore, even when the outside air temperature is equal to or higher than a preset value, the first air-conditioning room 210 can be cooled.

[0061] [1-4. Modifications of the air refrigerant type air conditioner of the first embodiment] Fig. 4 is a diagram showing a modification of embodiment 1. The solid lines shown in Fig. 4 indicate air flow paths, and the dashed lines shown in Fig. 4 indicate control signal lines through which control signals are transmitted and received. In the first embodiment shown in FIG. 1, the configuration is such that cooling air is supplied to the first air-conditioning room 210, and heating air is supplied to the second air-conditioning room 220. The modified example shown in FIG. 4 is configured so that heating air and cooling air can be supplied to the first air-conditioning room 210, and is also configured so that heating air and cooling air can be supplied to the second air-conditioning room 220.

[0062] In this modified example, the flow path 51 connecting the second outlet 21D of the first heat exchanger 21 and the first air-conditioning chamber 210 branches midway, and the flow path 51 is also connected to the second air-conditioning chamber 220. A first switching valve 71 is provided in the flow path 51 connected to the first air conditioning chamber 210, and a second switching valve 72 is provided in the flow path 51 connected to the second air conditioning chamber 220. The first switching valve 71 corresponds to a third valve. The second switching valve 72 corresponds to a fourth valve.

[0063] In this modification, the flow path 52 connecting the outlet side of the second heat exchanger 22 and the second air-conditioning chamber 220 branches off midway, and the flow path 52 is also connected to the first air-conditioning chamber 210. A third switching valve 73 is provided in the flow path 52 connected to the first air conditioning chamber 210, and a fourth switching valve 74 is provided in the flow path 52 connected to the second air conditioning chamber 220. The third switching valve 73 corresponds to a fifth valve. The fourth switching valve 74 corresponds to a sixth valve.

[0064] The control device 100 is connected to the first switching valve 71, the second switching valve 72, the third switching valve 73, and the fourth switching valve 74 via a control signal line (not shown). The control device 100 transmits a control signal to the first switching valve 71, the second switching valve 72, the third switching valve 73, or the fourth switching valve 74 via this control signal line. As a result, the first switching valve 71, the second switching valve 72, the third switching valve 73, and the fourth switching valve 74 are controlled to be in an open state or a closed state.

[0065] When the first switching valve 71 and the second switching valve 72 are controlled to an open state by the control device 100, the cooling air flowing through the flow path 51 is supplied to the first air-conditioning chamber 210 and the second air-conditioning chamber 220. Furthermore, when the first switching valve 71 and the second switching valve 72 are controlled to a closed state by the control device 100, the inflow of cooling air into the first air-conditioning room 210 and the second air-conditioning room 220 is prevented.

[0066] When the third switching valve 73 and the fourth switching valve 74 are controlled to an open state by the control device 100, the heating air flowing through the flow path 52 is supplied to the first air-conditioning chamber 210 and the second air-conditioning chamber 220. Furthermore, when the third changeover valve 73 and the fourth changeover valve 74 are controlled to the closed state by the control device 100, the inflow of heating air into the first air-conditioning room 210 and the second air-conditioning room 220 is prevented.

[0067] In this modified example, cooling air can be supplied to the first air-conditioning room 210 and the second air-conditioning room 220 to cool the first air-conditioning room 210 and the second air-conditioning room 220, or heating air can be supplied to the first air-conditioning room 210 and the second air-conditioning room 220 to heat the first air-conditioning room 210 and the second air-conditioning room 220.

[0068] It is assumed that, when T_out-T≧S, an operation signal instructing the start of cooling operation is input from the first receiving unit 215 to the control device 100. In this case, the control device 100 performs control to open the third control valve 43, adjust the opening degree of the second control valve 42, and close the first control valve 41 and the fourth control valve 44. The control device 100 also rotates the motors 13 and 17 to operate the compressor 11 and the expander 15, and operates the blower 30. Furthermore, the control device 100 performs control to open the first changeover valve 71, and close the second changeover valve 72 to the fourth changeover valve 74. As a result, cooling air is supplied to the first air-conditioning room 210 via the flow path 51.

[0069] Furthermore, when the operation signal instructing to start cooling is transmitted from the second receiving unit 225, the control device 100 performs control to close the first switching valve 71, open the second switching valve 72, and close the third switching valve 73 and the fourth switching valve 74. As a result, cooling air is supplied to the second air-conditioned room 220 via the flow path 51.

[0070] Next, it is assumed that, when T_out-T≧S, an operation signal instructing the start of the heating operation is input from the first receiving unit 215 to the control device 100. In this case, the control device 100 performs control to open the third control valve 43, adjust the opening degree of the second control valve 42, and close the first control valve 41 and the fourth control valve 44. The control device 100 also rotates the motors 13 and 17 to operate the compressor 11 and the expander 15, and operates the blower 30. Furthermore, the control device 100 performs control to close the first changeover valve 71, the second changeover valve 72, and the fourth changeover valve 74, and to open the third changeover valve 73. As a result, heating air is supplied to the first air-conditioning room 210 via the flow path 52.

[0071] Furthermore, when the operation signal instructing to start heating is transmitted from the second receiving unit 225, the control device 100 performs control to close the first changeover valve 71, the second changeover valve 72, and the third changeover valve 73, and to open the fourth changeover valve 74. As a result, heating air is supplied to the second air-conditioned room 220 via the flow path 52.

[0072] (Second embodiment) [2-1. Configuration of the air refrigerant type air conditioner according to the second embodiment] Fig. 5 is a diagram showing the configuration of an air refrigerant type air conditioner 1B according to embodiment 2. The solid lines shown in Fig. 5 indicate air flow paths, and the dashed lines shown in Fig. 5 indicate control signal lines through which control signals are transmitted and received. The air refrigerant type air conditioner 1B shown in FIG. 5 includes a compressor 11, motors 13, 17, an expander 15, a third heat exchanger 23, a fourth heat exchanger 24, a fifth control valve 45, a sixth control valve 46, a control device 100, and an outside air temperature detection unit 150.

[0073] The configuration of the compressor 11 is the same as that of the compressor 11 of the first embodiment. The suction side 11A of the compressor 11 communicates with the outside of the air refrigerant type air conditioner 1B via the inlet pipe 84. The compressor 11 takes in outside air as refrigerant air by the rotation of the motor 13 and compresses it. The discharge side 11B of the compressor 11 is connected to the flow path 81. The compressor 11 compresses the air taken in from the suction side 11A and discharges the compressed air, which has become high temperature and high pressure, into the flow path 81.

[0074] The flow path 81 is provided with the fifth control valve 45 and the third heat exchanger 23. The other end of the flow path 81 is connected to the suction side 15A of the expander 15.

[0075] The third heat exchanger 23 blows outside air using a fan (not shown) and exchanges heat with the air discharged from the compressor 11.

[0076] The configuration of the expander 15 is the same as that of the expander 15 in the first embodiment. The suction side 15A of the expander 15 is connected to the third heat exchanger 23 via a flow path 81. The discharge side 15B of the expander 15 is connected to a flow path 83. The other end of the flow path 83 is connected to the air-conditioning chamber 200. The flow path 83 corresponds to a fifth flow path. The expander 15 takes in air via the flow path 81 and expands the taken-in air. The expander 15 supplies the expanded air, which has a low temperature and low pressure, to the first air-conditioning chamber 210 via the flow path 83.

[0077] A flow path 82 is connected to the flow path 81 between the discharge side 11B of the compressor 11 and the fifth control valve 45. The flow path 82 is provided with the sixth control valve 46 and the fourth heat exchanger 24. The flow path 82 corresponds to the sixth flow path.

[0078] The fourth heat exchanger 24 blows outside air using a fan (not shown) and exchanges heat between the air discharged from the compressor 11 and the outside air.

[0079] The fourth heat exchanger 24 is connected to the second air-conditioning chamber 220 via a flow path 82. The air discharged from the fourth heat exchanger 24 is supplied to the second air-conditioning chamber 220 via the fourth heat exchanger 24.

[0080] When the motor 13 is rotated under the control of the control device 100, the compressor 11 draws in outside air from the inlet piping 84. The drawn-in air is compressed by the compressor 11 to become high-temperature, high-pressure air. This high-temperature, high-pressure air is discharged from the discharge side 11B of the compressor 11. The fifth control valve 45 is opened under the control of the control device 100, and the high-temperature, high-pressure air discharged from the compressor 11 flows into the third heat exchanger 23.

[0081] The third heat exchanger 23 cools the incoming air and outputs it to the flow path 81. The air outputted to the flow path 81 is sucked into the expander 15, becomes low-temperature, low-pressure air, and is outputted from the discharge side 15B. The air discharged from the expander 15 is supplied to the first air-conditioned room 210 as air for cooling, and cools the first air-conditioned room 210.

[0082] Furthermore, by opening the sixth control valve 46 under the control of the control device 100, the high-temperature, high-pressure air discharged from the compressor 11 flows into the fourth heat exchanger 24. The fourth heat exchanger 24 cools the incoming air and outputs it to the flow path 82 as heating air. The heating air is supplied to the second air-conditioned room 220 via the flow path 82, and heats the second air-conditioned room 220.

[0083] [2-2. Operation of the air refrigerant type air conditioner according to the second embodiment] The operation of the control device 100 will be described with reference to the flow chart shown in FIG. When a user presses the operation start button on the remote control and an operation signal indicating that the operation start button has been pressed is input from the first receiving unit 215 or the second receiving unit 225, the control device 100 starts control.

[0084] When no operation signal is input from the first receiving unit 215 or the second receiving unit 225 (step T1 / NO), the control device 100 waits until an operation signal is input.

[0085] When an operation signal is input from the first receiving unit 215 or the second receiving unit 225 (step T1 / YES), the control device 100 performs control to adjust the opening degree of the fifth control valve 45 (step T2), and performs control to adjust the opening degree of the sixth control valve 46 (step T3).

[0086] Next, the control device 100 rotates the motor 13 to operate the compressor 11 (step T4), and rotates the motor 17 to operate the expander 15 (step T5). As a result, the air expanded by the expander 15 and now has a low temperature and low pressure is supplied to the first air-conditioning chamber 210 via the flow path 83, and cools the inside of the first air-conditioning chamber 210. Moreover, high-temperature, high-pressure air discharged from the compressor 11 is supplied to the second air-conditioning chamber 220 via the flow path 82, and heats the inside of the second air-conditioning chamber 220.

[0087] Next, the control device 100 determines whether or not the user has pressed the operation end button on the remote control and an operation signal indicating that the operation end button has been pressed has been input from the first receiving unit 215 or the second receiving unit 225.

[0088] If an operation signal indicating that the operation end button has been pressed is not input from the first receiving unit 215 or the second receiving unit 225 (step T6 / NO), the control device 100 waits until an operation signal indicating that the operation end button has been pressed is input.

[0089] When an operation signal indicating that the operation end button has been pressed is input from the first receiving unit 215 or the second receiving unit 225 (step T6 / YES), the control device 100 stops the rotation of the motor 13 to stop the operation of the compressor 11 (step T7). In addition, the control device 100 stops the rotation of the motor 17 to stop the operation of the expander 15 (step T8).

[0090] Next, the controller 100 performs control to close the fifth control valve 45 (step T9), and performs control to close the sixth control valve 46 (step T10).

[0091] [2-3. Effects, etc.] As described above, according to the air refrigerant type air conditioner 1B of the second embodiment, cooling air is supplied into the first air-conditioned room 210 via the flow path 83, and heating air is supplied into the second air-conditioned room 220 via the flow path 82. Therefore, cooling air and heating air can be supplied into the air-conditioned room with a compact configuration without using a heating device such as a heater.

[0092] [2-3. Modifications] In this embodiment 2, as in embodiment 1, the flow path 83 may be branched along the way, and the flow path 83 may be connected to the first air-conditioning chamber 210 and the second air-conditioning chamber 220, and the flow path 82 may be branched along the way, and the flow path 83 may be connected to the first air-conditioning chamber 210 and the second air-conditioning chamber 220.

[0093] A first switching valve 71 is provided in the flow path 81 connected to the first air conditioning chamber 210, and a second switching valve 72 is provided in the flow path 81 connected to the second air conditioning chamber 220.

[0094] A third switching valve 73 is provided in the flow path 82 connected to the first air conditioning chamber 210, and a fourth switching valve 74 is provided in the flow path 82 connected to the second air conditioning chamber 220.

[0095] The control device 100 is connected to the first switching valve 71, the second switching valve 72, the third switching valve 73, and the fourth switching valve 74 by a control signal line (not shown). The control device 100 transmits a control signal to the first switching valve 71, the second switching valve 72, the third switching valve 73, or the fourth switching valve 74 via this control signal line. As a result, the first switching valve 71, the second switching valve 72, the third switching valve 73, and the fourth switching valve 74 are controlled to be in an open state or a closed state. As a result, it is possible to supply heating air to the first air-conditioning room 210 and cooling air to the second air-conditioning room 220. In addition, it is possible to supply cooling air to the first air-conditioning room 210 and the second air-conditioning room 220, and to supply heating air to the first air-conditioning room 210 and the second air-conditioning room 220.

[0096] (Additional Note) The above description of the embodiments discloses the following techniques.

[0097] (Configuration 1) an air refrigerant type air conditioner comprising: a compressor that compresses air, an expander that expands the air, a blower that blows the air, a first heat exchanger that performs heat exchange between the air discharged by the blower and the air discharged by the expander, a second heat exchanger that cools the air discharged by the compressor, a first flow path that supplies the air discharged by the blower, which is air for cooling after heat exchange by the first heat exchanger, into an air-conditioned room, and a second flow path that supplies air for heating after heat exchange by the second heat exchanger into the air-conditioned room, and a control device that operates the compressor, the expander, and the blower when the air for cooling and the air for heating are supplied to the air-conditioned room, and operates the compressor when the air for heating is supplied to the air-conditioned room.

[0098] According to this configuration, by operating the compressor, the expander, and the blower, cooling air cooled by heat exchange in the first heat exchanger is supplied into the air-conditioned room via the first flow path, and high-temperature heating air discharged from the compressor is supplied into the air-conditioned room via the second flow path. Therefore, cooling air and heating air can be supplied into the air-conditioned room without using a heating device such as a heater. In addition, by operating the compressor, high-temperature air compressed by the compressor is supplied into the air-conditioned room via the second flow path. Therefore, heating air can be supplied to the air-conditioned room.

[0099] (Configuration 2) The air conditioned room includes a first air conditioned room and a second air conditioned room, the first flow path is connected to the first air conditioned room and the second flow path is connected to the second air conditioned room, and the control device operates the compressor, the expander and the blower when supplying the cooling air to the first air conditioned room and supplying the heating air to the second air conditioned room.

[0100] According to this configuration, the control device operates the compressor, the expander, and the blower, thereby supplying cooling air to the first air-conditioned room and heating air to the second air-conditioned room. Therefore, it is possible to supply cooling air to the first air-conditioned room and heating air to the second air-conditioned room without using a heating device such as a heater.

[0101] (Configuration 3) 3. The air refrigerant type air conditioner according to configuration 2, further comprising: a third flow path that causes the air discharged by the blower to flow into the first flow path without passing through the first heat exchanger; a first valve provided in the third flow path; and an outside air temperature detection unit that detects an outside air temperature, wherein when the outside air temperature is lower than a preset set value, the control device operates the blower to open the first valve and supplies the air discharged by the blower to the first air-conditioned room via the third flow path as the cooling air.

[0102] According to this configuration, when the outside air temperature is lower than a preset value, the air discharged by the blower can be supplied to the first air-conditioned room via the third flow path, so that the first air-conditioned room can be cooled without operating the compressor or the expander.

[0103] (Configuration 4) The air refrigerant type air conditioner according to configuration 2 or 3, wherein the control device operates the compressor, the expander, and the blower when the outside air temperature is equal to or higher than the preset value, and supplies the cooling air after heat exchange in the first heat exchanger to the first air-conditioned room.

[0104] According to this configuration, when the outside air temperature is equal to or higher than a preset value, air for cooling that is cooled by heat exchange in the first heat exchanger is supplied into the first air-conditioned room. Therefore, even when the outside air temperature is equal to or higher than a preset value, the inside of the air-conditioned room can be cooled.

[0105] (Configuration 5) The air refrigerant type air conditioner according to any one of configurations 1 to 4, wherein the compressor sucks in the air discharged by the expander, the air having been heat exchanged by the first heat exchanger, and air input via a fourth flow path, a second valve is provided in the fourth flow path, and the control device opens the second valve when the amount of air sucked in by the compressor is greater than the amount of air discharged by the expander, and causes the air flowing in via the fourth flow path to be sucked into the compressor, and opens the second valve when the amount of air discharged by the expander is greater than the amount of air sucked in by the compressor, and releases the air discharged by the expander, which is not sucked into the compressor, into the atmosphere via the fourth flow path.

[0106] According to this configuration, when the amount of air drawn into the compressor is greater than the amount of air discharged by the expander, air is drawn into the compressor via the fourth flow path. Also, when the amount of air discharged by the expander is greater than the amount of air drawn into the compressor, the surplus air discharged by the expander that is not drawn into the compressor is released into the atmosphere via the fourth flow path. Therefore, even if there is a discrepancy between the amount of air drawn into the compressor and the amount of air discharged by the expander, the amount of air drawn into the compressor can be controlled to be optimal.

[0107] (Configuration 6) the air-conditioning chamber includes a first air-conditioning chamber and a second air-conditioning chamber, the first flow path is connected to the first air-conditioning chamber and the second air-conditioning chamber, the second flow path is connected to the first air-conditioning chamber and the second air-conditioning chamber, the first flow path connected to the first air-conditioning chamber is provided with a third valve, the first flow path connected to the second air-conditioning chamber is provided with a fourth valve, the second flow path connected to the first air-conditioning chamber is provided with a fifth valve, and the second flow path connected to the second air-conditioning chamber is provided with a sixth valve, and the control device controls opening and closing of the third valve, the fourth valve, the fifth valve, and the sixth valve.

[0108] According to this configuration, the control device controls the third valve provided in the first flow path connected to the first air-conditioning chamber, and controls the fourth valve provided in the first flow path connected to the second air-conditioning chamber. The control device also controls the fifth valve provided in the second flow path connected to the first air-conditioning chamber, and controls the sixth valve provided in the second flow path connected to the second air-conditioning chamber. This makes it possible to supply cooling air or heating air to the first air-conditioning chamber and the second air-conditioning chamber, which are the multiple air-conditioning chambers.

[0109] (Configuration 7) The air refrigerant type air conditioner of configuration 6, further comprising a first reception unit that is installed in the first air-conditioned room and receives user operation, wherein the control device performs control to open the third valve and close the fifth valve when the control device receives an operation to instruct cooling via the first reception unit, and performs control to close the third valve and open the fifth valve when the control device receives an operation to instruct heating via the first reception unit.

[0110] According to this configuration, when the first reception unit receives an operation to instruct cooling, the third valve is opened and the fifth valve is closed. Also, when the first reception unit receives an operation to instruct heating, the third valve is closed and the fifth valve is opened. Therefore, cooling air or heating air can be supplied to the first air-conditioned room in accordance with the operation received by the first reception unit.

[0111] (Configuration 8) The air refrigerant type air conditioner of configuration 6 or 7, further comprising a second reception unit that is installed in the second air-conditioned room and receives user operation, wherein the control device performs control to open the fourth valve and close the sixth valve when the control device receives an operation to instruct cooling via the second reception unit, and performs control to close the fourth valve and open the sixth valve when the control device receives an operation to instruct heating via the second reception unit.

[0112] According to this configuration, when an operation instructing cooling is received by the second reception unit, control is performed to open the fourth valve and close the sixth valve. Also, when an operation instructing heating is received by the second reception unit, control is performed to close the fourth valve and open the sixth valve. Therefore, cooling air or heating air can be supplied to the second air-conditioned room in accordance with the operation received by the second reception unit.

[0113] (Configuration 9) an air refrigerant type air conditioner comprising: a compressor that compresses air; a third heat exchanger that cools the air discharged from the compressor; a fourth heat exchanger that cools the air discharged from the compressor; an expander that expands the air cooled by the third heat exchanger; a fifth flow path that supplies the air discharged from the expander to an air-conditioned room as air for cooling; a sixth flow path that supplies the air discharged from the compressor, which has been heat exchanged by the fourth heat exchanger, to the air-conditioned room as air for heating; and a control device that operates the compressor and the expander when the air for cooling and the air for heating are supplied to the air-conditioned room.

[0114] According to this configuration, by operating the compressor and the expander, cooling air cooled by heat exchange in the third heat exchanger is supplied into the air-conditioned room via the fifth flow path, and high-temperature heating air discharged by the compressor is supplied into the air-conditioned room via the sixth flow path. Therefore, cooling air and heating air can be supplied into the air-conditioned room without using a heating device such as a heater. In addition, by operating the compressor, high-temperature air compressed by the compressor is supplied into the air-conditioned room via the sixth flow path. Therefore, heating air can be supplied to the air-conditioned room.

[0115] (Configuration 10) The air conditioned room includes a first air conditioned room and a second air conditioned room, the fifth flow path is connected to the first air conditioned room and the second air conditioned room, and the sixth flow path is connected to the first air conditioned room and the second air conditioned room, and the control device operates the compressor and the expander when supplying the cooling air to the first air conditioned room and supplying the heating air to the second air conditioned room.

[0116] According to this configuration, the control device operates the compressor and the expander, thereby supplying cooling air to the first air-conditioned room and heating air to the second air-conditioned room. Therefore, it is possible to supply cooling air to the first air-conditioned room and heating air to the second air-conditioned room without using a heating device such as a heater.

[0117] (Configuration 11) A control method for an air refrigerant type air conditioner comprising a compressor that compresses air, an expander that expands the air, a blower that blows the air, a first heat exchanger that performs heat exchange between the air discharged by the blower and the air discharged by the expander, a second heat exchanger that cools the air discharged by the compressor, a first flow path that supplies the air discharged by the blower, which is air for cooling after heat exchange by the first heat exchanger, into an air-conditioned room, and a second flow path that supplies heating air after heat exchange by the second heat exchanger into the air-conditioned room, the control method comprising causing a computer mounted on the air refrigerant type air conditioner to operate the compressor, the expander, and the blower when the cooling air and the heating air are supplied to the air-conditioned room, and to operate the compressor when the heating air is supplied to the air-conditioned room.

[0118] According to this configuration, by operating the compressor, the expander, and the blower, cooling air cooled by heat exchange in the first heat exchanger is supplied into the air-conditioned room via the first flow path, and high-temperature heating air discharged from the compressor is supplied into the air-conditioned room via the second flow path. Therefore, cooling air and heating air can be supplied into the air-conditioned room without using a heating device such as a heater. In addition, by operating the compressor, high-temperature air compressed by the compressor is supplied into the air-conditioned room via the second flow path. Therefore, heating air can be supplied to the air-conditioned room.

[0119] (Configuration 12) A control method for an air refrigerant type air conditioner comprising: a compressor that compresses air; a third heat exchanger that cools the air discharged from the compressor; a fourth heat exchanger that cools the air discharged from the compressor; an expander that expands the air cooled by the third heat exchanger; a fifth flow path that supplies the air discharged from the expander to an air-conditioned room as air for cooling; and a sixth flow path that supplies the air discharged from the compressor and that has been heat exchanged by the fourth heat exchanger to the air-conditioned room as air for heating, the control method comprising causing a computer mounted on the air refrigerant type air conditioner to operate the compressor and the expander when the air for cooling and the air for heating are supplied to the air-conditioned room, and to operate the compressor when the air for heating is supplied to the air-conditioned room.

[0120] According to this configuration, by operating the compressor and the expander, cooling air cooled by heat exchange in the third heat exchanger is supplied into the air-conditioned room via the fifth flow path, and high-temperature heating air discharged by the compressor is supplied into the air-conditioned room via the sixth flow path. Therefore, cooling air and heating air can be supplied into the air-conditioned room without using a heating device such as a heater. In addition, by operating the compressor, high-temperature air compressed by the compressor is supplied into the air-conditioned room via the sixth flow path. Therefore, heating air can be supplied to the air-conditioned room.

[0121] (Configuration 13) The program is executed by a computer mounted on an air refrigerant type air conditioner comprising a compressor that compresses air, an expander that expands the air, a blower that blows the air, a first heat exchanger that performs heat exchange between the air discharged by the blower and the air discharged by the expander, a second heat exchanger that cools the air discharged by the compressor, a first flow path that supplies the air discharged by the blower with cooling air after heat exchange by the first heat exchanger into an air-conditioned room, and a second flow path that supplies the air discharged by the blower with heating air after heat exchange by the second heat exchanger into the air-conditioned room, the program causing the computer to execute processing to operate the compressor, the expander, and the blower when the cooling air and the heating air are supplied to the air-conditioned room, and to operate the compressor when the heating air is supplied to the air-conditioned room.

[0122] According to this configuration, by operating the compressor, the expander, and the blower, cooling air cooled by heat exchange in the first heat exchanger is supplied into the air-conditioned room via the first flow path, and high-temperature heating air discharged from the compressor is supplied into the air-conditioned room via the second flow path. Therefore, cooling air and heating air can be supplied into the air-conditioned room without using a heating device such as a heater. In addition, by operating the compressor, high-temperature air compressed by the compressor is supplied into the air-conditioned room via the second flow path. Therefore, heating air can be supplied to the air-conditioned room.

[0123] (Configuration 14) A program to be executed by a computer mounted on an air refrigerant type air conditioner comprising: a compressor that compresses air, a third heat exchanger that cools the air discharged from the compressor, a fourth heat exchanger that cools the air discharged from the compressor, an expander that expands the air cooled by the third heat exchanger, a fifth flow path that supplies the air discharged from the expander to an air-conditioned room as air for cooling, and a sixth flow path that supplies the air discharged from the compressor and that has been heat exchanged by the fourth heat exchanger to the air-conditioned room as air for heating, the program causing the computer to execute processing to operate the compressor and the expander when the air for cooling and the air for heating are supplied to the air-conditioned room, and to operate the compressor when the air for heating is supplied to the air-conditioned room.

[0124] According to this configuration, by operating the compressor and the expander, cooling air cooled by heat exchange in the third heat exchanger is supplied into the air-conditioned room via the fifth flow path, and high-temperature heating air discharged by the compressor is supplied into the air-conditioned room via the sixth flow path. Therefore, cooling air and heating air can be supplied into the air-conditioned room without using a heating device such as a heater. In addition, by operating the compressor, high-temperature air compressed by the compressor is supplied into the air-conditioned room via the sixth flow path. Therefore, heating air can be supplied to the air-conditioned room.

[0125] As described above, the above-mentioned embodiment has been described as an example disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can be applied to an embodiment in which modifications, substitutions, additions, omissions, etc. are made. In addition, it is also possible to combine the components described in the above-mentioned embodiment to create a new embodiment.

[0126] For example, the step units of the operations shown in Figures 3 and 6 are divided according to the main processing contents in order to make the operations easier to understand, and the operation is not limited by the manner in which the processing units are divided or the names of the processing units. The operations may be divided into more step units according to the processing contents. Furthermore, one step unit may be divided so as to include more processing. Furthermore, the order of the steps may be appropriately changed within the scope of the present disclosure.

[0127] It should be noted that the above-described embodiments are intended to illustrate the technology of the present disclosure, and various modifications, substitutions, additions, omissions, and the like can be made within the scope of the claims or their equivalents. [Industrial Applicability]

[0128] INDUSTRIAL APPLICABILITY As described above, the air refrigerant type air conditioner, and the control method and program for the air refrigerant type air conditioner according to the present invention can be used for cooling the interior of an air-conditioned room. [Explanation of symbols]

[0129] 1A, 1B Air refrigerant type air conditioner 11 Compressor 11A Suction side 11B Discharge side 13 Motor 15 Expander 15A suction side 15B Discharge side 17 Motor 21 1st heat exchanger 21A 1st entrance 21B Exit 1 21C 2nd entrance 21D 2nd exit 22 Second heat exchanger 23 Third heat exchanger 24 4th heat exchanger 30 Blower 30B Discharge side 41 First control valve 42 Second control valve 43 Third control valve 44 4th control valve 45 5th control valve 46 6th control valve 51 Flow Path 52 Flow Path 53 Flow Path 54 Inlet piping 55 Flow Path 56 Flow Path 57 Flow Path 71 First switching valve 72 Second switching valve 73 Third switching valve 74 4th switching valve 81 Flow Path 82 Flow Path 83 Flow Path 84 Inlet piping 100 Control device 110 Storage section 130 processors 150 Outside temperature detector 200 Air conditioned room 210 Air conditioning room 1 215 First Receiving Unit 225 Second Receiving Unit 220 2nd air conditioning room

Claims

1. A compressor for compressing air; an expander that expands the air; A blower that blows the air; A first heat exchanger that performs heat exchange between the air discharged from the blower and the air discharged from the expander; a second heat exchanger that cools the air discharged from the compressor; a first flow path that supplies the air for cooling discharged from the blower and having been heat exchanged by the first heat exchanger into an air-conditioned room; a second flow path that supplies the heating air after heat exchange by the second heat exchanger into the air-conditioned room; When the cooling air and the heating air are supplied to the air-conditioned room, the compressor, the expander, and the blower are operated; A control device that operates the compressor when the heating air is supplied to the air-conditioned room; Equipped with Air refrigerant type air conditioning system.

2. The air-conditioning room includes a first air-conditioning room and a second air-conditioning room, The first flow path is connected to the first air conditioning chamber, The second flow path is connected to the second air conditioning chamber, The control device operates the compressor, the expander, and the blower when supplying the cooling air to the first air-conditioning room and supplying the heating air to the second air-conditioning room.

2. An air refrigerant type air conditioner according to claim 1.

3. a third flow path that causes the air discharged by the blower to flow into the first flow path without passing through the first heat exchanger; a first valve provided in the third flow path; An outside air temperature detection unit that detects the outside air temperature; Equipped with When the outside air temperature is lower than a preset value, the control device operates the blower to open the first valve, and supplies the air discharged by the blower to the first air-conditioning room via the third flow path as the cooling air.

3. An air refrigerant type air conditioner according to claim 2.

4. When the outside air temperature is equal to or higher than the preset value, the control device operates the compressor, the expander, and the blower, and supplies the cooling air after heat exchange by the first heat exchanger to the first air-conditioned room.

4. An air refrigerant type air conditioner according to claim 3.

5. The compressor includes: The air discharged from the expander is sucked in after heat exchange by the first heat exchanger, and air input via a fourth flow path; A second valve is provided in the fourth flow path, The control device includes: When an amount of air sucked into the compressor is greater than an amount of air discharged from the expander, the second valve is opened to allow the air flowing in through the fourth flow path to be sucked into the compressor; When the amount of air discharged by the expander is greater than the amount of air taken in by the compressor, the second valve is opened, and the air discharged by the expander but not taken in by the compressor is discharged into the atmosphere via the fourth flow path.

2. An air refrigerant type air conditioner according to claim 1.

6. The air-conditioning room includes a first air-conditioning room and a second air-conditioning room, The first flow path is connected to the first air conditioning chamber and the second air conditioning chamber, The second flow path is connected to the first air conditioning chamber and the second air conditioning chamber, A third valve is provided in the first flow path connected to the first air conditioning chamber, A fourth valve is provided in the first flow path connected to the second air conditioning chamber, The second flow path connected to the first air conditioning chamber is provided with a fifth valve, A sixth valve is provided in the second flow path connected to the second air conditioning chamber, The control device controls opening and closing of the third valve, the fourth valve, the fifth valve, and the sixth valve.

2. An air refrigerant type air conditioner according to claim 1.

7. a first reception unit that is installed in the first air-conditioned room and receives an operation by a user; The control device includes: When an operation instructing cooling is received by the first reception unit, control is performed to open the third valve and close the fifth valve, When an operation instructing heating is accepted by the first accepting unit, control is performed to close the third valve and open the fifth valve.

7. An air refrigerant type air conditioner according to claim 6.

8. a second reception unit that is installed in the second air-conditioned room and receives an operation by a user; The control device includes: When an operation for instructing cooling is received by the second reception unit, control is performed to open the fourth valve and close the sixth valve, When an operation instructing heating is accepted by the second accepting unit, control is performed to close the fourth valve and open the sixth valve.

7. An air refrigerant type air conditioner according to claim 6.

9. A compressor for compressing air; a third heat exchanger that cools the air discharged from the compressor; a fourth heat exchanger that cools the air discharged from the compressor; an expander that expands the air cooled by the third heat exchanger; A fifth flow path that supplies the air discharged from the expander to an air-conditioned room as air for cooling; a sixth flow passage that supplies the air discharged from the compressor and having been heat exchanged by the fourth heat exchanger to the air-conditioned room as heating air; a control device that operates the compressor and the expander when the cooling air and the heating air are supplied to the air-conditioned room; An air refrigerant type air conditioner comprising:

10. The air-conditioning room includes a first air-conditioning room and a second air-conditioning room, The fifth flow path is connected to the first air conditioning chamber and the second air conditioning chamber, The sixth flow path is connected to the first air conditioning chamber and the second air conditioning chamber, The control device operates the compressor and the expander when supplying the cooling air to the first air-conditioning room and supplying the heating air to the second air-conditioning room.

10. The air refrigerant type air conditioner according to claim 9.

11. A compressor for compressing air; an expander that expands the air; A blower that blows the air; A first heat exchanger that performs heat exchange between the air discharged from the blower and the air discharged from the expander; a second heat exchanger that cools the air discharged from the compressor; a first flow path that supplies the air for cooling discharged from the blower and having been heat exchanged by the first heat exchanger into an air-conditioned room; A control method for an air refrigerant type air conditioner comprising: a second flow path that supplies the heating air after heat exchange by the second heat exchanger into the air-conditioned room, A computer mounted on the air refrigerant type air conditioner, When the cooling air and the heating air are supplied to the air-conditioned room, the compressor, the expander, and the blower are operated; When the heating air is supplied to the air-conditioned room, the compressor is operated. A method for controlling an air refrigerant type air conditioner.

12. A compressor for compressing air; a third heat exchanger that cools the air discharged from the compressor; a fourth heat exchanger that cools the air discharged from the compressor; an expander that expands the air cooled by the third heat exchanger; A fifth flow path that supplies the air discharged from the expander to an air-conditioned room as air for cooling; A sixth flow path supplies the air discharged from the compressor and subjected to heat exchange by the fourth heat exchanger into the air-conditioned room as heating air, A computer mounted on the air refrigerant type air conditioner, When the cooling air and the heating air are supplied to the air-conditioning room, the compressor and the expander are operated; When the heating air is supplied to the air-conditioned room, the compressor is operated. A method for controlling an air refrigerant type air conditioner.

13. A compressor for compressing air; an expander that expands the air; A blower that blows the air; A first heat exchanger that performs heat exchange between the air discharged from the blower and the air discharged from the expander; a second heat exchanger that cools the air discharged from the compressor; a first flow path that supplies the air for cooling discharged from the blower and having been heat exchanged by the first heat exchanger into an air-conditioned room; A program to be executed by a computer mounted in an air refrigerant type air conditioner comprising: a second flow path that supplies the heating air after heat exchange by the second heat exchanger into the air-conditioned room, The computer includes: When the cooling air and the heating air are supplied to the air-conditioned room, the compressor, the expander, and the blower are operated; When the heating air is supplied to the air-conditioned room, the compressor is operated. A program that executes a process.

14. A compressor for compressing air; a third heat exchanger that cools the air discharged from the compressor; a fourth heat exchanger that cools the air discharged from the compressor; an expander that expands the air cooled by the third heat exchanger; A fifth flow path that supplies the air discharged from the expander into an air-conditioned room as air for cooling; a sixth flow path that supplies the air discharged from the compressor and subjected to heat exchange by the fourth heat exchanger into the air-conditioned room as heating air, The computer includes: When the cooling air and the heating air are supplied to the air-conditioning room, the compressor and the expander are operated; When the heating air is supplied to the air-conditioned room, the compressor is operated. A program that executes a process.

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