Water generating apparatus and water generating method

Abstract

[Problem] To improve energy efficiency and fresh-water generation efficiency when generating water from air. [Solution] The present invention involves: controlling a compressor 24 and a blower 8 so as to achieve Te>0°C when 8°C≤ inflow air temperature Tin <27°C and inflow air humidity Min≥40% are satisfied (steps S100-S108); controlling the compressor 24 and the blower 8 so as to achieve Tin-Te≥17°C when Tin≥27°C and Min≥40% are satisfied (step S110); when Tin<8°C is satisfied, controlling the compressor 24 and the blower 8 for a prescribed time t1 so as to achieve Te=-20°C (step S112), and executing a thawing process for a prescribed time t2 after the prescribed time t1 has elapsed (step S114); and, when Tin<8°C and Min<40% are satisfied, controlling the compressor 24 so as to achieve the maximum output and controlling the blower 8 in accordance with Tin (step S116).

Description

Technical Field

[0001] The present invention relates to a water generation device and a water generation method for generating water from air.

Background Art

[0002] Japanese Patent Publication No. 2002-505409 (Patent Document 1) describes a water generation device including an air intake device capable of supplying air into the device, an evaporator disposed such that the air supplied from the air intake device can pass through it, a condenser connected to the evaporator via a pipe, a compressor connected to the evaporator and the condenser via a pipe and capable of supplying compressed refrigerant to the condenser, a thawing means capable of thawing the moisture frozen by the evaporator, and a central processing unit for controlling the amount of air passing through the evaporator.

[0003] The device produces water from the ambient atmosphere by passing air containing moisture taken into the device through the evaporator, freezing the moisture on the evaporator, and thawing the frozen moisture by the thawing means.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the water generation device described in the above-mentioned publication has a configuration in which moisture in the air passing through the evaporator is frozen regardless of the temperature of the air taken into the device. Therefore, it is necessary to always drive the compressor in a high-output state. In addition, the time required to thaw the frozen moisture in the water generation device described in the above-mentioned publication is a loss time during water generation. Thus, there is still room for improvement in terms of energy saving and water production efficiency in the water generation device described in the above-mentioned publication.

[0006] This invention has been made in view of the above, and one of its objectives is to improve the energy efficiency when generating water from air. Another objective of this invention is to improve the water production efficiency when generating water from air. [Means for solving the problem]

[0007] The water generation apparatus and water generation method of the present invention employ the following means to achieve the above-mentioned objectives.

[0008] A preferred embodiment of the water generating device according to the present invention is configured to generate water from air. The water generating device comprises a housing having an air inlet, a first heat exchanger disposed inside the housing so as to face the inlet, a second heat exchanger disposed inside the housing on the opposite side of the housing from the inlet with respect to the first heat exchanger so as to face the first heat exchanger, a blower disposed inside the housing on the opposite side of the housing from the second heat exchanger so as to face the second heat exchanger for bringing air into the housing, a compressor capable of compressing a refrigerant and disposed inside the housing, a first pipe connected to the compressor and the second heat exchanger so as to be able to supply the refrigerant compressed by the compressor to the second heat exchanger, a second pipe connected to the second heat exchanger and the first heat exchanger so as to be able to supply the refrigerant that has undergone heat exchange in the second heat exchanger to the first heat exchanger, and heat exchange in the first heat exchanger The system includes a third pipe connected to a first heat exchanger and compressor so as to be able to supply the refrigerated refrigerant to the compressor; a storage unit located inside the housing so as to be able to store moisture from the air condensed in the first heat exchanger; a thawing unit located inside the housing so as to be able to thaw the frozen moisture in the first heat exchanger by thermally acting on the frozen moisture; a first temperature sensor, an inflow air humidity sensor, and an inflow air velocity sensor located between the inlet and the first heat exchanger so as to be able to measure the temperature, humidity, and wind speed of the air flowing into the first heat exchanger, respectively; a second temperature sensor located in the first heat exchanger so as to be able to measure the heat exchanger temperature, which is the temperature of the first heat exchanger; and a control unit that controls the compressor and blower based on the inflow air temperature and inflow air humidity. The control unit controls the compressor and blower so that the heat exchanger temperature is greater than 0°C and lower than the inflow air temperature when the inflow air temperature is greater than 0°C and less than the second temperature. Furthermore, if the inflow air temperature is below the first temperature, the compressor and blower are controlled for a first predetermined time so that the heat exchanger temperature is 0 degrees or lower and lower than the inflow air temperature, and after the first predetermined time has elapsed, the thawing unit is driven for a second predetermined time to thaw the frozen moisture in the first heat exchanger. Here, the term "blower" in this invention preferably includes not only fans but also blowers.

[0009] According to the present invention, when the inflow air temperature is between a first temperature and a second temperature greater than 0°C, the heat exchanger temperature is set to be greater than 0°C, so that the moisture in the inflow air does not freeze on the first heat exchanger as it passes through it. Furthermore, by setting the heat exchanger temperature lower than the inflow air temperature, it is possible to generate an amount of water corresponding to the inflow air temperature, heat exchanger temperature, and inflow air humidity. Here, it is desirable that the heat exchanger temperature be set to a value that maximizes the amount of condensed water. That is, it is desirable that the heat exchanger temperature be variable according to the inflow air temperature and inflow air humidity. In this way, according to the present invention, it is possible to secure an optimal amount of water while suppressing the output of the compressor, and since there is no need to thaw the moisture frozen on the heat exchanger as in the conventional method, there is no loss of time during water generation. As a result, it is possible to improve the energy efficiency and water production efficiency when generating water from air. Furthermore, if the inflow air temperature is below the first temperature, the heat exchanger temperature can be lowered to 0 degrees Celsius or below for a first predetermined time. As the inflow air passes through the first heat exchanger, the moisture in the inflow and inflow air can be frozen on the first heat exchanger. In order to lower the heat exchanger temperature below the inflow air temperature, an amount of moisture corresponding to the inflow air temperature, heat exchanger temperature, and inflow air humidity can be frozen on the first heat exchanger. After the first predetermined time has elapsed, the thawing unit is driven for a second predetermined time to thaw the frozen moisture, thereby ensuring an optimal amount of water.

[0010] According to a further embodiment of the water generating device of the present invention, The thawing section thaws the water frozen in the first heat exchanger by supplying the refrigerant, compressed by the compressor, to the first heat exchanger, the second heat exchanger, and then back to the compressor.

[0011] According to this form, There is no need to install a dedicated device solely for thawing frozen water. This prevents the device from becoming excessively large.

[0012] A preferred embodiment of the water generating device according to the present invention is configured to generate water from air. The water generating device comprises a housing having an air inlet, a first heat exchanger disposed inside the housing so as to face the inlet, a second heat exchanger disposed inside the housing on the opposite side of the housing from the inlet with respect to the first heat exchanger so as to face the first heat exchanger, a blower disposed inside the housing on the opposite side of the housing from the second heat exchanger so as to face the second heat exchanger for bringing air into the housing, a compressor capable of compressing a refrigerant and disposed inside the housing, a first pipe connected to the compressor and the second heat exchanger so as to be able to supply the refrigerant compressed by the compressor to the second heat exchanger, a second pipe connected to the second heat exchanger and the first heat exchanger so as to be able to supply the refrigerant that has undergone heat exchange in the second heat exchanger to the first heat exchanger, and heat exchange in the first heat exchanger The system includes a third pipe connected to a first heat exchanger and compressor so as to be able to supply the refrigerated refrigerant to the compressor; a storage unit located inside the housing so as to be able to store moisture from the air condensed in the first heat exchanger; a thawing unit located inside the housing so as to be able to thaw the frozen moisture in the first heat exchanger by thermally acting on the frozen moisture; a first temperature sensor, an inflow air humidity sensor, and an inflow air velocity sensor located between the inlet and the first heat exchanger so as to be able to measure the temperature of the air flowing into the first heat exchanger, the temperature of the first heat exchanger, and the heat exchanger temperature located on the first heat exchanger so as to be able to measure the heat exchanger temperature; and a control unit that controls the compressor and blower based on the inflow air temperature and the inflow air humidity. The control unit controls the compressor and blower so that the heat exchanger temperature is greater than 0°C and lower than the inflow air temperature when the inflow air temperature is greater than 0°C and less than the second temperature. , The thawing section thaws the water frozen in the first heat exchanger by supplying the refrigerant, compressed by the compressor, to the first heat exchanger, the second heat exchanger, and then back to the compressor.

[0013] According to the present invention, when the inflow air temperature is between a first temperature and a second temperature greater than 0°C, the heat exchanger temperature is set to be greater than 0°C, so that the moisture in the inflow air does not freeze on the first heat exchanger as it passes through it. Furthermore, by setting the heat exchanger temperature lower than the inflow air temperature, it is possible to generate an amount of water corresponding to the inflow air temperature, heat exchanger temperature, and inflow air humidity. Here, it is desirable to set the heat exchanger temperature to a value that maximizes the amount of condensed water. That is, it is desirable to make the heat exchanger temperature variable according to the inflow air temperature and inflow air humidity. In this way, according to the present invention, it is possible to secure an optimal amount of water while suppressing the output of the compressor, and since there is no need to thaw the moisture frozen on the heat exchanger as in the conventional method, there is no loss time during water generation. As a result, it is possible to improve the energy efficiency and water production efficiency when generating water from air. Furthermore, there is no need to provide a dedicated device solely for thawing frozen moisture. This prevents the device from becoming larger.

[0014] According to a further embodiment of the water generating apparatus according to the present invention, the control unit determines the temperature of the incoming air. If the temperature is above the second temperature, the compressor and the blower are adjusted so that the difference between the incoming air temperature and the heat exchanger temperature is above the third temperature. To control.

[0015] According to this configuration, the incoming air temperature is When the temperature is above the second temperature, the difference between the inflow air temperature and the heat exchanger temperature can be increased to the third temperature or higher, and an amount of water corresponding to the inflow air temperature, inflow air humidity, and the third temperature can be generated. Here, it is desirable that the third temperature be set to a value that maximizes the amount of condensed water. That is, it is desirable that the third temperature be variable according to the inflow air temperature and inflow air humidity.

[0016] According to a further embodiment of the water generating device of the present invention, The system further includes a first humidity sensor positioned between the inlet and the first heat exchanger, which is capable of measuring the humidity of the air flowing into the first heat exchanger. The control unit then controls the compressor to drive at maximum output if the humidity of the incoming air is less than the first humidity.

[0017] According to this embodiment, Even when the inflow air humidity is below the first humidity level, in other words, when it is difficult to secure a sufficient amount of condensed water, water can still be generated appropriately.

[0018] According to a preferred embodiment of the water generation method according to the present invention, a first heat exchanger arranged to face an air inlet, and a second heat exchanger arranged on the side opposite to the inlet with respect to the first heat exchanger so as to face the first heat exchanger, via the first heat exchanger air 2nd heat exchanger A blower arranged on the side opposite to the first heat exchanger with respect to the second heat exchanger so as to face the second heat exchanger to allow air to flow into the second heat exchanger, a compressor capable of compressing a refrigerant and feeding the compressed refrigerant to the second heat exchanger and the first heat exchanger in this order, and a storage section capable of storing the moisture of the air condensed in the first heat exchanger. A water generation method for generating water from air is configured using a water generation device including. The water generation method includes (a) driving the compressor so that the compressed refrigerant is fed to the second heat exchanger and the first heat exchanger in this order The steps to take , (b) measuring the inflow air temperature and the inflow air velocity, which are the temperature and the air velocity of the air flowing into the first heat exchanger, respectively The steps to take , (c) when the measured inflow air temperature is higher than 0°C and lower than a second temperature and higher than a first temperature, controlling the compressor and the blower so that the heat exchanger temperature is higher than 0°C and lower than the inflow air temperature The system includes the steps of: if the measured incoming air temperature is below a first temperature, controlling the compressor and blower for a first predetermined time so that the heat exchanger temperature is 0 degrees or lower and lower than the incoming air temperature, and thawing the frozen moisture in the first heat exchanger for a second predetermined time after the first predetermined time has elapsed; . Here, the "blower" in the present invention preferably includes not only a fan but also a blower.

[0019] According to the present invention, when the inflow air temperature is between a first temperature and a second temperature greater than 0°C, the heat exchanger temperature is set to be greater than 0°C, so that the moisture in the inflow air does not freeze on the first heat exchanger as it passes through it. Furthermore, by setting the heat exchanger temperature lower than the inflow air temperature, it is possible to generate an amount of water corresponding to the inflow air temperature, heat exchanger temperature, and inflow air humidity. Here, it is desirable that the heat exchanger temperature be set to a value that maximizes the amount of condensed water. That is, it is desirable that the heat exchanger temperature be variable according to the inflow air temperature and inflow air humidity. In this way, according to the present invention, it is possible to secure an optimal amount of water while suppressing the output of the compressor, and since there is no need to thaw the moisture frozen on the heat exchanger as in the conventional method, there is no loss of time during water generation. As a result, it is possible to improve the energy efficiency and water production efficiency when generating water from air. Furthermore, if the inflow air temperature is below the first temperature, the heat exchanger temperature can be lowered to 0 degrees Celsius or below for a first predetermined time. As the inflow air passes through the first heat exchanger, the moisture in the inflow and inflow air can be frozen on the first heat exchanger. In order to lower the heat exchanger temperature below the inflow air temperature, an amount of moisture corresponding to the inflow air temperature, heat exchanger temperature, and inflow air humidity can be frozen on the first heat exchanger. After the first predetermined time has elapsed, the thawing unit is driven for a second predetermined time to thaw the frozen moisture, thereby ensuring an optimal amount of water.

[0020] According to a further embodiment of the water production method of the present invention, Step (c) includes the step of thawing the water frozen in the first heat exchanger by supplying the compressed refrigerant to the first heat exchanger and then the second heat exchanger.

[0021] According to this form, There is no need to install a dedicated device solely for thawing frozen water. This prevents the device from becoming excessively large.

[0022] A preferred embodiment of the water generation method according to the present invention is a water generation apparatus that generates water from air, comprising: a first heat exchanger arranged to face an air inlet; a second heat exchanger arranged to face the first heat exchanger and on the opposite side of the first heat exchanger from the inlet; a blower arranged to face the second heat exchanger and on the opposite side of the second heat exchanger from the first heat exchanger in order to cause air to flow into the second heat exchanger via the first heat exchanger; a compressor capable of compressing a refrigerant and supplying the compressed refrigerant in the order of the second heat exchanger and then the first heat exchanger; and a storage unit capable of storing moisture from the air condensed in the first heat exchanger. The water generation method includes the steps of (a) driving a compressor so that compressed refrigerant is supplied to the second heat exchanger and then the first heat exchanger in that order; (b) measuring the incoming air temperature and incoming air velocity, which are the temperature and wind velocity of the air flowing into the first heat exchanger, respectively; and (c) if the measured incoming air temperature is between a first temperature greater than 0°C and a second temperature, controlling the compressor and blower so that the heat exchanger temperature is greater than 0°C and lower than the incoming air temperature, and supplying compressed refrigerant to the first heat exchanger and then the second heat exchanger in that order to thaw the water frozen in the first heat exchanger.

[0023] According to the present invention, when the inflow air temperature is between a first temperature and a second temperature greater than 0°C, the heat exchanger temperature is set to be greater than 0°C, so that the moisture in the inflow air does not freeze on the first heat exchanger as it passes through it. Furthermore, by setting the heat exchanger temperature lower than the inflow air temperature, it is possible to generate an amount of water corresponding to the inflow air temperature, heat exchanger temperature, and inflow air humidity. Here, it is desirable to set the heat exchanger temperature to a value that maximizes the amount of condensed water. That is, it is desirable to make the heat exchanger temperature variable according to the inflow air temperature and inflow air humidity. In this way, according to the present invention, it is possible to secure an optimal amount of water while suppressing the output of the compressor, and since there is no need to thaw the moisture frozen on the heat exchanger as in the conventional method, there is no loss time during water generation. As a result, it is possible to improve the energy efficiency and water production efficiency when generating water from air. Furthermore, there is no need to provide a dedicated device solely for thawing frozen moisture. This prevents the device from becoming larger.

[0024] According to a further embodiment of the water production method of the present invention, step (c) is performed when the incoming air temperature measured in step (b) The procedure includes a step of controlling the compressor and blower so that the difference between the inflow air temperature and the heat exchanger temperature becomes 3 or higher when the temperature is 2 or higher.

[0025] According to this configuration, the incoming air temperature is When the temperature is above the second temperature, the difference between the inflow air temperature and the heat exchanger temperature can be increased to the third temperature or higher, and an amount of water corresponding to the inflow air temperature, inflow air humidity, and the third temperature can be generated. Here, it is desirable that the third temperature be set to a value that maximizes the amount of condensed water. That is, it is desirable that the third temperature be variable according to the inflow air temperature and inflow air humidity.

[0026] According to a further embodiment of the water production method of the present invention, The system further includes step (d) measuring the inflow air humidity, which is the humidity of the air flowing into the first heat exchanger. Step (c) includes controlling the compressor to operate at maximum output if the inflow air humidity measured in step (d) is less than the first humidity.

[0027] According to this form, Even when the inflow air humidity is below the first humidity level, in other words, when it is difficult to secure a sufficient amount of condensed water, water can still be generated appropriately. [Effects of the Invention]

[0028] According to the present invention, the energy efficiency when generating water from air can be improved. Furthermore, according to the present invention, the water production efficiency when generating water from air can be improved. [Brief explanation of the drawing]

[0029] [Figure 1] This is a front view of a water generating device 1 according to an embodiment of the present invention. [Figure 2] This is a front view of the water generating device 1 according to an embodiment of the present invention, with the front panel 3 removed. [Figure 3] This is a side view of the water generating device 1 according to an embodiment of the present invention, as seen from the right side, with the right side panel removed. [Figure 4] This is a side view of the water generating device 1 according to an embodiment of the present invention, as seen from the left side, with the left side panel removed. [Figure 5] This is a front view of enclosure 2, seen from the front. [Figure 6] This is a schematic diagram showing the general configuration of the water production unit 4. [Figure 7] This is an explanatory diagram showing airflow. [Figure 8] This flowchart shows an example of a water generation processing routine executed by the control unit 10 of the water generation device 1 according to an embodiment of the present invention. [Modes for carrying out the invention]

[0030] Next, the best mode for carrying out the present invention will be described using examples. [Examples]

[0031] As shown in Figures 1 to 4, the water generating device 1 according to Example 1 mainly comprises a housing 2, a water production unit 4, a water production receiving panel 6, a blower 8, and a control unit 10 (see Figures 1, 2, and 4) housed inside the housing 2.

[0032] As shown in Figure 5, the housing 2 has a front panel 3. The front panel 3 has an opening 3a, a touch panel liquid crystal display 3b, and a water outlet 3c. The opening 3a functions as an inlet for taking air into the inside of the housing 2. As shown in Figure 1, an air filter screen 3d is installed in the opening 3a. As a result, air flows into the housing 2 from outside through the air filter screen 3d. The liquid crystal display 3b displays menus and keys for operating the water generator 1 and setting its functions, and also displays the status of the water generator 1. The water outlet 3c discharges water generated by the water generator 1 in response to the operation of the user using the water generator 1. Furthermore, as shown in Figure 2, the housing 2 is divided into a first space IS1 and a second space IS2 by a partition wall 2a. The opening 3a is an example of an embodiment corresponding to the "inlet" in the present invention.

[0033] As shown in Figure 2, the water production unit 4 is located in the first space IS1 of the housing 2. As shown in Figures 3 and 6, the water production unit 4 includes an evaporator 20, a condenser 22, and a compressor 24 capable of compressing the refrigerant. As shown in Figure 6, the evaporator 20 and the condenser 22 are connected to each other by piping 60a, the evaporator 20 and the compressor 24 are connected to each other by piping 60b, and the condenser 22 and the compressor 24 are connected to each other by piping 60c. This allows the refrigerant compressed by the compressor 24 to be circulated from the condenser 22 through the evaporator 20 back to the compressor 24, or from the evaporator 20 through the condenser 22 back to the compressor 24. The evaporator 20 corresponds to the "first heat exchanger" in the present invention, the condenser 22 corresponds to the "second heat exchanger" in the present invention, and the compressor 24 is an example of an implementation configuration corresponding to the "compressor" in the present invention.

[0034] The evaporator 20 has the function of actively evaporating the refrigerant flowing inside it, and uses the heat of vaporization of the refrigerant to lower the temperature of the air passing through the evaporator 20. As shown in Figure 3, the evaporator 20 is positioned facing the opening 3a. More specifically, the evaporator 20 is positioned with an upward slope toward the opening 3a. In other words, the evaporator 20 is positioned with a slope that approaches the opening 3a as it moves from the lower end toward the upper end.

[0035] The condenser 22 has the function of condensing the refrigerant flowing inside it, and uses the heat of condensation of the refrigerant to raise the temperature of the air passing through the condenser 22. As shown in Figure 3, the condenser 22 is positioned opposite the evaporator 20 to the opening 3a and facing the evaporator 20. More specifically, the condenser 22 is positioned in a manner that has an upward slope toward the opening 3a, similar to the evaporator 20. In other words, the condenser 22 is positioned in a manner that has a slope that approaches the opening 3a as it moves from the lower end to the upper end.

[0036] As shown in Figures 2 and 6, the generated water receiving panel 6 is positioned below the evaporator 20 and collects the generated water (condensed water) that condenses on the evaporator 20. As shown in Figures 2 and 4, the generated water receiving panel 6 is connected to the purification device 50 via piping 60d. The purification device 50 is connected to the water storage tank 52 via piping 60e. As a result, the water generated by the water production unit 4 and collected by the generated water receiving panel 6 is purified by the purification device 50 to remove foreign matter and bacteria, and then stored in the water storage tank 52. The water stored in the water storage tank 52 is then supplied to the discharge port 3c by a pump (not shown) that operates according to the operation of the user using the water generation device 1. As shown in Figure 2, the purification device 50 and the water storage tank 52 are located in the second space IS2 of the housing 2. The water storage tank 52 is an example of an implementation configuration corresponding to the "storage section" in the present invention. Furthermore, pipes 60a, 60b, and 60c are examples of implementation configurations corresponding to the "second pipe," "third pipe," and "first pipe" in the present invention, respectively.

[0037] As shown in Figures 2 and 3, the blower 8 is positioned above the water production unit 4. More specifically, as shown in Figure 3, the blower 8 is positioned opposite the condenser 22 to the evaporator 20 and facing the condenser 22. By positioning the evaporator 20 and condenser 22 at an angle to the opening 3a in this way, the blower 8 can be positioned above the water production unit 4, thus saving space compared to a configuration in which the evaporator 20, condenser 22, and blower 8 are arranged in series with respect to the opening 3a. When the blower 8 configured in this way is driven, as shown in Figure 7, the air surrounding the water generator 1 flows into the housing 2 (first space IS1) from the opening 3a via the air filter screen 3d, and is discharged through the evaporator 20 and condenser 22 from an outlet (not shown) provided on the upper panel (not shown) of the housing 2 (see the thick arrow in Figure 7).

[0038] Furthermore, as shown in Figure 2, the blower 8 has a pair of sirocco fans 8a and 8b integrated with a rotating shaft 8c, and a motor M. The sirocco fans 8a and 8b are rotatably supported in the housing 2 via the rotating shaft 8c. The sirocco fans 8a and 8b and the motor M are connected via a transmission mechanism TM. As shown in Figure 3, the transmission mechanism TM has a sprocket S1 integrated with the rotating shaft 8c, a sprocket S2 integrated with the rotating shaft of the motor M, and a chain CH stretched between sprockets S1 and S2. In this embodiment, the blower 8 is configured to have a pair of sirocco fans 8a and 8b, but it is not limited to this. For example, the blower 8 may have only sirocco fan 8a, or it may have a blower instead of sirocco fans 8a and 8b. Also, in this embodiment, the sirocco fans 8a and 8b are driven by the motor M via the transmission mechanism TM, but it is not limited to this. For example, the sirocco fans 8a and 8b may be configured to be directly driven by the motor M.

[0039] As shown in Figure 2, the control unit 10 is located in the second space IS2 of the housing 2. The control unit 10 is configured as a microprocessor centered on a CPU, and in addition to the CPU, it includes a ROM for storing processing programs, a RAM for temporarily storing data, and input / output ports (not shown). The control unit 10 receives inputs such as the inflow air temperature Tin, inflow air humidity Min, and inflow air wind speed Vin from the inflow air thermometer 80a, inflow air hygrometer 80b, and inflow air anemometer 80c, as well as the evaporator internal temperature Te from the evaporator internal thermometer 82, and the outflow air temperature Tout, outflow air humidity Mout, and outflow air wind speed Vout from the outflow air thermometer 84a, outflow air hygrometer 84b, and outflow air anemometer 84c, via input ports (not shown). Control signals to the compressor 24 and control signals to the blower 8 (specifically, the motor M) are output from the control unit 10 via output ports (not shown). Here, the inlet air thermometer 80a, inlet air hygrometer 80b, and inlet air anemometer 80c are positioned between the opening 3a and the evaporator 20, as shown in Figures 2 and 3. The evaporator internal thermometer 82 is positioned inside or in contact with the evaporator 20 so as to be able to measure the evaporator internal temperature Te. The outlet air thermometer 84a, outlet air hygrometer 84b, and outlet air anemometer 84c are positioned between the condenser 22 and the blower 8. The control unit 10 is an example of an embodiment corresponding to the "control unit" in the present invention. Furthermore, the inlet air thermometer 80a, inlet air hygrometer 80b, and inlet air anemometer 80c are examples of embodiments corresponding to the "first temperature sensor," "humidity sensor," and "wind speed sensor," respectively, in the present invention. In addition, the evaporator internal thermometer 82 is an example of an embodiment corresponding to the "second temperature sensor" in the present invention. Furthermore, the evaporator internal temperature Te is an example of an implementation configuration corresponding to the "heat exchanger temperature" in this invention.

[0040] Next, the operation of the water generator 1 configured in this way, particularly the operation when generating water from air, will be described. Figure 8(a) is a main flowchart showing an example of a water generation processing routine executed by the control unit 10 of the water generator 1 according to an embodiment of the present invention, and Figures 8(b) and 8(c) are subflowcharts branched from the main flowchart in Figure 8(a).

[0041] When the water generation processing routine is executed, as shown in Figure 8, the CPU of the control unit 10 first performs the process of reading the inflow air temperature Tin, inflow air humidity Min, evaporator internal temperature Te, and inflow air wind speed Vin (step S100). Next, the CPU of the control unit 10 performs the process of determining whether the read inflow air temperature Tin is 8°C or higher or less than 8°C (step S102). If the inflow air temperature Tin is 8°C or higher, it performs the process of determining whether the read inflow air humidity Min is 40% or higher or less than 40% (step S104). If the inflow air humidity Min is 40% or higher, it performs the process of determining whether the read inflow air temperature Tin is 27°C or higher or less than 27°C (step S106). Here, in this embodiment, the threshold for inflow air temperature Tin is set to 8°C or 27°C, and the threshold for inflow air humidity Min is set to 40%, but it is not limited to these. For example, the threshold value for the incoming air temperature Tin can be set to a value between 5°C and 10°C instead of 8°C, or to a value between 25°C and 33°C instead of 27°C. Also, for example, the threshold value for the incoming air humidity Min can be set to a value between 30% and 50% instead of 40%. A temperature of 8°C corresponds to the "first temperature" in this invention, a temperature of 27°C corresponds to the "second temperature" in this invention, and a humidity of 40% corresponds to the "first humidity" in this invention; these are examples of implementation configurations.

[0042] In step S106, if the inflow air temperature Tin is less than 27°C, the CPU of the control unit 10 controls the compressor 24 and the blower 8 (motor M) so that the evaporator internal temperature Te is greater than 0°C and less than the intake air temperature Tin (step S108), and then terminates this processing routine. Thus, in this embodiment, when the inflow air temperature Tin is 8°C or more and less than 27°C and the inflow air humidity Min is 40% or more, the compressor 24 and the blower 8 (motor M) are controlled so that the evaporator internal temperature Te is greater than 0°C. As a result, when the inflow air passes through the evaporator 20, the moisture in the inflow air does not freeze on the evaporator 20. This eliminates the need to thaw frozen moisture, thus eliminating loss time during water production and improving water production efficiency. Furthermore, by lowering the evaporator internal temperature Te to be lower than the inflow air temperature Tin, an amount of water corresponding to the inflow air temperature Tin, evaporator internal temperature Te, and inflow air humidity Min can be produced. This makes it possible to secure an optimal amount of water while suppressing the output of the compressor 24, thereby improving the energy efficiency when generating water from air. In this embodiment, the internal temperature Te of the evaporator is set to be greater than 0°C, but it is desirable to set it to a value that maximizes the amount of water (condensed water) that condenses in the evaporator 20. For example, the internal temperature Te of the evaporator can be varied according to the inflow air temperature Tin and the inflow air humidity Min.

[0043] On the other hand, in step S106, if the inflow air temperature Tin is 27°C or higher, the CPU of the control unit 10 controls the compressor 24 and the blower 8 (motor M) so that the difference between the inflow air temperature Tin and the evaporator internal temperature Te is 17°C or higher (step S110), and then terminates this processing routine. Thus, in this embodiment, when the inflow air temperature Tin is 27°C or higher and the inflow air humidity Min is 40% or higher, the compressor 24 and the blower 8 (motor M) are controlled so that the difference between the inflow air temperature Tin and the evaporator internal temperature Te is 17°C or higher, so that an amount of water corresponding to the inflow air temperature Tin, the inflow air humidity Min, and the temperature difference of 17°C between the inflow air temperature Tin and the evaporator internal temperature Te can be generated. Here, in this embodiment, the temperature difference between the inflow air temperature Tin and the evaporator internal temperature Te is set to 17°C, but it is not limited to this. The temperature difference between the inflow air temperature Tin and the evaporator internal temperature Te is preferably set to a value that maximizes the amount of water (condensed water) that condenses in the evaporator 20. For example, the temperature difference between the inflow air temperature Tin and the evaporator internal temperature Te can be varied according to the inflow air temperature Tin and the inflow air humidity Min. A temperature difference of 17°C is an example of an embodiment corresponding to the "third temperature" in the present invention.

[0044] Also, in step S102, when the inflow air temperature Tin is less than 8°C, the CPU of the control unit 10 controls the compressor 24 and the blower 8 (motor M) so that the internal temperature Te of the evaporator becomes -20°C as shown in FIG. 9, and executes this process continuously for a predetermined time t1 (step S112). After the elapse of the predetermined time t1, the defrosting process is executed continuously for a predetermined time t2 (step S114), and this processing routine is terminated. Here, the predetermined time t1 is set as the time required for a sufficient amount of ice and frost to be formed in the evaporator 20. Also, the predetermined time t2 is set as the time required for the frozen moisture (ice and frost) in the evaporator 20 to be sufficiently defrosted. In the present embodiment, the defrosting process is configured to defrost the frozen moisture (ice and frost) in the evaporator 20 by flowing the refrigerant in the direction opposite to the flow direction of the refrigerant when generating water, that is, from the compressor 24 through the evaporator 20 and the condenser 22 and back to the compressor 24 again. Here, the defrosting process is not limited to this configuration. Needless to say, for example, a dedicated heater may be arranged near the evaporator 20, and the frozen moisture (ice and frost) in the evaporator 20 may be defrosted by the heater. The predetermined times t1 and t2 are examples of implementation configurations corresponding to the "first predetermined time" and the "second predetermined time" in the present invention, respectively. Also, the water production unit 4 that performs the defrosting process, that is, the water production unit 4 that is driven to flow the refrigerant in the direction opposite to the flow direction of the refrigerant when generating water (from the compressor 24 through the evaporator 20 and the condenser 22 and back to the compressor 24 again) is an example of an implementation configuration corresponding to the "defrosting unit" in the present invention.

[0045] Thus, in the present embodiment, when the inflow air temperature Tin is less than 8°C, the internal temperature Te of the evaporator is set to -20°C (Te < Tin), and the moisture in the inflow air is actively frozen in the evaporator 20. Then, in order to defrost the frozen moisture, even when the inflow air temperature Tin is relatively low, an optimal amount of water can be generated.

[0046] Furthermore, in step S104, if the inflow air humidity Min is less than 40%, the compressor 24 is controlled to maximize its output, as shown in Figure 10, and the blower 8 (motor M) is controlled according to the inflow air temperature Tin (step S116), and the processing routine is terminated. Here, the control of the blower 8 (motor M) according to the inflow air temperature Tin can be controlled such that, for example, the wind speed Vin decreases as the inflow air temperature Tin increases. As a result, the time the inflow air is in contact with the evaporator 20 can be increased as the inflow air temperature Tin increases, thereby improving the heat exchange efficiency. As a result, the water production efficiency can be improved. Thus, in this embodiment, even when the inflow air temperature Tin is less than 8°C and the inflow air humidity Min is less than 40%, that is, when the inflow air is in a state where condensation is unlikely, water can be produced appropriately.

[0047] This embodiment illustrates one example of a configuration for carrying out the present invention. Therefore, the present invention is not limited to the configuration of this embodiment.

[0048] <Note> In view of the spirit of the invention described above, the water generating apparatus and water generating method according to the present invention can be configured in the following embodiments. (Aspect 1) "A water generating device that generates water from air, A housing having the aforementioned air inlet, A first heat exchanger is positioned inside the housing so as to face the inlet, A second heat exchanger is located inside the housing and is positioned opposite the inlet of the first heat exchanger, facing the first heat exchanger. To allow the aforementioned air to flow into the interior of the housing, a blower is provided, which is located inside the housing and opposite to the second heat exchanger with respect to the second heat exchanger, on the side opposite to the first heat exchanger, and facing the second heat exchanger. A compressor capable of compressing the refrigerant and located inside the casing, A first pipe connected to the compressor and the second heat exchanger so as to be able to supply the refrigerant compressed by the compressor to the second heat exchanger, A second piping connected to the second heat exchanger and the first heat exchanger is provided so that the refrigerant that has undergone heat exchange in the second heat exchanger can be supplied to the first heat exchanger, A third pipe connected to the first heat exchanger and the compressor is provided so that the refrigerant heat-exchanged in the first heat exchanger can be supplied to the compressor, A storage section is provided inside the housing of the first heat exchanger so as to be able to store the moisture from the condensed air, A thawing unit is provided inside the housing of the first heat exchanger, which is capable of thawing the frozen water by thermally acting upon the frozen water, A first temperature sensor, a humidity sensor, and a wind speed sensor are positioned between the inlet and the first heat exchanger so as to be able to measure the temperature, humidity, and wind speed of the air flowing into the first heat exchanger, respectively. A second temperature sensor is positioned in the first heat exchanger so as to be able to measure the heat exchanger temperature, which is the temperature of the first heat exchanger, A control unit that controls the compressor and the blower based on the incoming air temperature and the incoming air humidity, Equipped with, The control unit controls the compressor and the blower so that the heat exchanger temperature is greater than 0°C and lower than the incoming air temperature when the incoming air temperature is greater than a first temperature and less than a second temperature. Furthermore, if the incoming air temperature is below the first temperature, the compressor and blower are controlled for a first predetermined time so that the heat exchanger temperature is 0 degrees or less and lower than the incoming air temperature, and after the first predetermined time has elapsed, the thawing unit is driven for a second predetermined time to thaw the moisture frozen in the first heat exchanger. Water generator. ” (Aspect 2) " The thawing unit thaws the water frozen in the first heat exchanger by supplying the refrigerant compressed by the compressor in the order of the first heat exchanger, the second heat exchanger, and the compressor. The water generating apparatus described in embodiment 1 above. (Aspect 3) " A water generating device that generates water from air, A housing having the aforementioned air inlet, A first heat exchanger is positioned inside the housing so as to face the inlet, A second heat exchanger is located inside the housing and is positioned opposite the inlet of the first heat exchanger, facing the first heat exchanger. To allow the aforementioned air to flow into the interior of the housing, a blower is provided, which is located inside the housing and opposite to the second heat exchanger with respect to the second heat exchanger, on the side opposite to the first heat exchanger, and facing the second heat exchanger. A compressor capable of compressing the refrigerant and located inside the casing, A first pipe connected to the compressor and the second heat exchanger so as to be able to supply the refrigerant compressed by the compressor to the second heat exchanger, A second piping connected to the second heat exchanger and the first heat exchanger is provided so that the refrigerant that has undergone heat exchange in the second heat exchanger can be supplied to the first heat exchanger, A third pipe connected to the first heat exchanger and the compressor is provided so that the refrigerant heat-exchanged in the first heat exchanger can be supplied to the compressor, A storage section is provided inside the housing of the first heat exchanger so as to be able to store the moisture from the condensed air, A thawing unit is provided inside the housing of the first heat exchanger, which is capable of thawing the frozen water by thermally acting upon the frozen water, A first temperature sensor, a humidity sensor, and a wind speed sensor are positioned between the inlet and the first heat exchanger so as to be able to measure the temperature, humidity, and wind speed of the air flowing into the first heat exchanger, respectively. A second temperature sensor is positioned in the first heat exchanger so as to be able to measure the heat exchanger temperature, which is the temperature of the first heat exchanger, A control unit that controls the compressor and the blower based on the incoming air temperature and the incoming air humidity, Equipped with, The control unit controls the compressor and the blower so that the heat exchanger temperature is greater than 0°C and lower than the incoming air temperature when the incoming air temperature is greater than 0°C and less than the second temperature. The thawing unit thaws the water frozen in the first heat exchanger by supplying the refrigerant compressed by the compressor in the order of the first heat exchanger, the second heat exchanger, and the compressor. Water generator. " (Aspect 4) " The control unit controls the compressor and the blower so that the difference between the incoming air temperature and the heat exchanger temperature becomes the third temperature or higher when the incoming air temperature is the second temperature or higher. A water generating apparatus according to any one of the above embodiments 1 to 3. (Aspect 5) " The control unit controls the compressor to operate at maximum output when the humidity of the incoming air is less than the first humidity level. A water generating apparatus according to any one of the above embodiments 1 to 4. (Aspect 6) "A first heat exchanger positioned opposite the air inlet, and a second heat exchanger positioned opposite the first heat exchanger to the inlet, via the first heat exchanger The aforementioned air Second heat exchanger A water generation method for generating water from air, using a water generation apparatus comprising: a blower positioned opposite the second heat exchanger to the second heat exchanger so as to face the second heat exchanger and to allow water to flow into the second heat exchanger; a compressor capable of compressing the refrigerant; and a storage unit capable of storing the moisture in the air condensed in the first heat exchanger, wherein water is generated from the air, (a) The compressor is driven so that the compressed refrigerant is supplied to the second heat exchanger and then to the first heat exchanger. The steps to take , (b) The temperature and velocity of the air flowing into the first heat exchanger are measured. The steps to take , (c) If the measured incoming air temperature is greater than 0°C and between a first temperature and a second temperature, the compressor and blower are controlled so that the heat exchanger temperature is greater than 0°C and lower than the incoming air temperature. Furthermore, if the measured incoming air temperature is less than the first temperature, the compressor and blower are controlled for a first predetermined time so that the heat exchanger temperature is 0 degrees or less and lower than the incoming air temperature, and after the first predetermined time has elapsed, the water frozen in the first heat exchanger is thawed for a second predetermined time. Equipped with Water production method. ” (Aspect 7) "Step (c) includes the step of thawing the water frozen in the first heat exchanger by supplying the compressed refrigerant to the first heat exchanger and then the second heat exchanger in that order." The water production method described in embodiment 6 above. (Pattern 8) " A water generation method for generating water from air, comprising a water generation apparatus comprising: a first heat exchanger positioned opposite an air inlet; a second heat exchanger positioned opposite the first heat exchanger and on the opposite side of the first heat exchanger from the inlet; a blower positioned opposite the second heat exchanger and on the opposite side of the second heat exchanger from the first heat exchanger; a compressor capable of compressing a refrigerant; and a storage unit capable of storing moisture from the air condensed in the first heat exchanger, wherein water is generated from air using the water generation apparatus, (a) A step of driving the compressor so that the compressed refrigerant is supplied to the second heat exchanger and the first heat exchanger in that order, (b) A step of measuring the temperature and wind speed of the air flowing into the first heat exchanger, and the temperature of the first heat exchanger, respectively. (c) If the measured incoming air temperature is greater than 0°C and greater than or equal to a first temperature but less than a second temperature, the compressor and the blower are controlled so that the heat exchanger temperature is greater than 0°C and lower than the incoming air temperature, and the compressed refrigerant is supplied to the first heat exchanger and then to the second heat exchanger in that order, thereby thawing the water frozen in the first heat exchanger. A water generation method comprising the following features. " (Aspect 9) "Step (c) is when the incoming air temperature measured in step (b) is If the temperature is 2 or higher, the compressor and blower are controlled so that the difference between the incoming air temperature and the heat exchanger temperature becomes 3 or higher. Includes the step of A water generation method according to any one of the embodiments 6 to 8 described above. (Aspect 10) " The step (d) further comprises measuring the humidity of the incoming air, which is the humidity of the air flowing into the first heat exchanger, Step (c) includes a step of controlling the compressor to operate at maximum output if the humidity of the incoming air measured in step (d) is less than the first humidity. The aforementioned embodiment From 6 9 one of the following The water production method described in [the document]. [Explanation of symbols]

[0049] 1 Water generator (Water generator) 2 cabinets (cabinets) 3. Front Panel 3a Opening (inlet) 3b LCD display 3c Spout 3D Air Filter Screen 4. Water production unit 6. Water generation receiving panel 8. Blower (Blower) 8a Sirocco fan 8b Sirocco fan 8c rotation axis 10 Control Unit (Control Section) 20 Evaporator (First Heat Exchanger) 22. Capacitor (Second Heat Exchanger) 24. Compressor 50 Purification device 52 Water storage tank (storage section) 60a Piping (Second Piping) 60b Piping (Third Piping) 60c piping (1st piping) 60d piping 60e piping 80a Inflow air temperature meter (first temperature sensor) 80b Inflow air humidity meter (humidity sensor) 80°C Inflow Air Anemometer (Wind Speed ​​Sensor) 82 Evaporator internal thermometer (second temperature sensor) 84a Outlet air thermometer 84b Outflow air hygrometer 84c Outflow air anemometer IS1 1st space IS2 2nd space TM transmission mechanism S1 Sprocket S2 Sprocket CH Chain M Motor Tin Inflow air temperature Minimum Inflow Air Humidity Vin Inflow air velocity Te Evaporator internal temperature (heat exchanger temperature) Tout Outlet Air Temperature Mout Outflow Air Humidity Vout Outflow air velocity t1 Prescribed time (first prescribed time) t2 Scheduled time (Second scheduled time)

Claims

1. A water generating device that generates water from air, A housing having the aforementioned air inlet, A first heat exchanger is positioned inside the housing so as to face the inlet, A second heat exchanger is located inside the housing and is positioned opposite the inlet of the first heat exchanger, facing the first heat exchanger. To allow the aforementioned air to flow into the interior of the housing, a blower is provided, which is located inside the housing and opposite to the second heat exchanger with respect to the second heat exchanger, and is positioned opposite the second heat exchanger. A compressor capable of compressing the refrigerant and located inside the casing, A first pipe connected to the compressor and the second heat exchanger so as to be able to supply the refrigerant compressed by the compressor to the second heat exchanger, A second piping connected to the second heat exchanger and the first heat exchanger is provided so that the refrigerant that has undergone heat exchange in the second heat exchanger can be supplied to the first heat exchanger, A third pipe connected to the first heat exchanger and the compressor is provided so that the refrigerant heat-exchanged in the first heat exchanger can be supplied to the compressor, A storage section is provided inside the housing of the first heat exchanger so as to be able to store the moisture from the air that has condensed, A thawing unit is provided inside the housing of the first heat exchanger, which is capable of thawing the frozen water by thermally acting upon the frozen water, A first temperature sensor, a humidity sensor, and a wind speed sensor are positioned between the inlet and the first heat exchanger so as to be able to measure the temperature, humidity, and wind speed of the air flowing into the first heat exchanger, respectively. A second temperature sensor is positioned in the first heat exchanger so as to be able to measure the heat exchanger temperature, which is the temperature of the first heat exchanger. A control unit that controls the compressor and the blower based on the incoming air temperature and the incoming air humidity, Equipped with, The control unit controls the compressor and blower so that the heat exchanger temperature is greater than 0°C and lower than the incoming air temperature when the incoming air temperature is greater than 0°C and less than the second temperature, and controls the compressor and blower for a first predetermined time so that the heat exchanger temperature is 0°C or less and lower than the incoming air temperature when the incoming air temperature is less than the first temperature, and after the first predetermined time has elapsed, controls the thawing unit to drive for a second predetermined time in order to thaw the moisture frozen in the first heat exchanger. Water generator.

2. The thawing unit thaws the water frozen in the first heat exchanger by supplying the refrigerant compressed by the compressor in the order of the first heat exchanger, the second heat exchanger, and the compressor. The water generating apparatus according to claim 1.

3. A water generating device that generates water from air, A housing having the aforementioned air inlet, A first heat exchanger is positioned inside the housing so as to face the inlet, A second heat exchanger is located inside the housing and is positioned opposite the inlet of the first heat exchanger, facing the first heat exchanger. To allow the aforementioned air to flow into the interior of the housing, a blower is provided, which is located inside the housing and opposite to the second heat exchanger with respect to the second heat exchanger, and is positioned opposite the second heat exchanger. A compressor capable of compressing the refrigerant and located inside the casing, A first pipe connected to the compressor and the second heat exchanger so as to be able to supply the refrigerant compressed by the compressor to the second heat exchanger, A second piping connected to the second heat exchanger and the first heat exchanger is provided so that the refrigerant that has undergone heat exchange in the second heat exchanger can be supplied to the first heat exchanger, A third pipe connected to the first heat exchanger and the compressor is provided so that the refrigerant heat-exchanged in the first heat exchanger can be supplied to the compressor, A storage section is provided inside the housing of the first heat exchanger so as to be able to store the moisture from the air that has condensed, A thawing unit is provided inside the housing of the first heat exchanger, which is capable of thawing the frozen water by thermally acting upon the frozen water, A first temperature sensor, a humidity sensor, and a wind speed sensor are positioned between the inlet and the first heat exchanger so as to be able to measure the temperature, humidity, and wind speed of the air flowing into the first heat exchanger, respectively. A second temperature sensor is positioned in the first heat exchanger so as to be able to measure the heat exchanger temperature, which is the temperature of the first heat exchanger. A control unit that controls the compressor and the blower based on the incoming air temperature and the incoming air humidity, Equipped with, The control unit controls the compressor and the blower so that the heat exchanger temperature is greater than 0°C and lower than the incoming air temperature when the incoming air temperature is greater than a first temperature and less than a second temperature. The thawing unit thaws the water frozen in the first heat exchanger by supplying the refrigerant compressed by the compressor in the order of the first heat exchanger, the second heat exchanger, and the compressor. Water generator.

4. The control unit controls the compressor and the blower so that the difference between the incoming air temperature and the heat exchanger temperature becomes the third temperature or higher when the incoming air temperature is the second temperature or higher. A water generating apparatus according to any one of claims 1 to 3.

5. The control unit controls the compressor to operate at maximum output when the humidity of the incoming air is less than the first humidity level. A water generating apparatus according to any one of claims 1 to 3.

6. A water generation method for generating water from air, comprising: a first heat exchanger positioned opposite an air inlet; a second heat exchanger positioned opposite the first heat exchanger to the inlet; a blower positioned opposite the second heat exchanger to the second heat exchanger to the first heat exchanger in order to allow air to flow into the second heat exchanger via the first heat exchanger; a compressor capable of compressing a refrigerant; and a storage unit capable of storing moisture from the air condensed in the first heat exchanger, wherein the water generation apparatus comprises: a first heat exchanger positioned opposite an air inlet; a second heat exchanger positioned opposite the first heat exchanger to the inlet; a blower positioned opposite the second heat exchanger to the second heat exchanger to allow air to flow into the second heat exchanger via the first heat exchanger; a compressor capable of compressing a refrigerant; and a storage unit capable of storing moisture from the air condensed in the first heat exchanger, wherein the water generation apparatus generates water from air, (a) A step of driving the compressor so that the compressed refrigerant is supplied to the second heat exchanger and the first heat exchanger in that order, (b) A step of measuring the temperature and wind speed of the air flowing into the first heat exchanger, and the temperature of the first heat exchanger, respectively. (c) If the measured incoming air temperature is greater than 0°C and between a first temperature and a second temperature, the compressor and blower are controlled so that the heat exchanger temperature is greater than 0°C and lower than the incoming air temperature; if the measured incoming air temperature is less than the first temperature, the compressor and blower are controlled for a first predetermined time so that the heat exchanger temperature is 0°C or less and lower than the incoming air temperature; and after the first predetermined time has elapsed, the frozen moisture in the first heat exchanger is thawed for a second predetermined time. A water generation method comprising the following features.

7. Step (c) includes a step of thawing the water frozen in the first heat exchanger by supplying the compressed refrigerant to the first heat exchanger and then the second heat exchanger in that order. The water production method according to claim 6.

8. A water generation method for generating water from air, using a water generation apparatus comprising: a first heat exchanger arranged to face an air inlet; a second heat exchanger arranged to face the first heat exchanger and on the opposite side of the first heat exchanger to the inlet; a blower arranged to face the second heat exchanger and on the opposite side of the second heat exchanger to the first heat exchanger in order to cause the air to flow into the second heat exchanger via the first heat exchanger; a compressor capable of compressing a refrigerant; and a storage unit capable of storing moisture from the air condensed in the first heat exchanger, wherein (a) A step of driving the compressor so that the compressed refrigerant is supplied to the second heat exchanger and the first heat exchanger in that order, (b) A step of measuring the temperature and wind speed of the air flowing into the first heat exchanger, and the temperature of the first heat exchanger, respectively. (c) If the measured incoming air temperature is greater than 0°C and above a first temperature but below a second temperature, the compressor and blower are controlled so that the heat exchanger temperature is greater than 0°C and lower than the incoming air temperature, and the compressed refrigerant is supplied to the first heat exchanger and then to the second heat exchanger in that order, thereby thawing the water frozen in the first heat exchanger. A water generation method comprising the following features.

9. Step (c) includes, if the incoming air temperature measured in step (b) is equal to or greater than the second temperature, controlling the compressor and the blower so that the difference between the incoming air temperature and the heat exchanger temperature becomes equal to or greater than the third temperature. A method for generating water according to any one of claims 6 to 8.

10. The step (d) further comprises measuring the humidity of the incoming air, which is the humidity of the air flowing into the first heat exchanger, Step (c) includes a step of controlling the compressor to operate at maximum output if the humidity of the incoming air measured in step (d) is less than the first humidity. A method for generating water according to any one of claims 6 to 8.

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