Energy-saving air water generator and working method thereof

Abstract

The invention relates to an energy-saving air water generator and a working method thereof. The energy-saving air water generator is characterized by comprising a compressor, a condenser, a four-way electric control valve, an evaporator and an inner cooling pipe placed in a water tank, a first branch of the output end of the compressor is sequentially connected with the input end of the condenser, the output end of the condenser, a first port of the four-way electric control valve, a fourth port of the four-way electric control valve, the input end of the inner cooling pipe, the output end of the inner cooling pipe and the input end of the compressor. A second branch of the output end of the compressor is sequentially connected with a second port of the four-way electric control valve, a third port of the four-way electric control valve, the input end of the evaporator, the output end of the evaporator and the input end of the compressor. The four-way electric control valve is electrically connected with the controller so as to control the first port and the third port of the four-way electric control valve to be communicated, the first port and the fourth port of the four-way electric control valve to be communicated, and the second port and the third port of the four-way electric control valve to be communicated or not communicated. According to the energy-saving air water generator and the working method thereof, the design is reasonable, the equipment structure is simplified, and the manufacturing cost is reduced.

Description

Technical Field

[0002] The present invention relates to the field of air water making equipment, in particular to an energy-saving air water making machine and a working method thereof. Background Art

[0003] One of the air water making machines is a device that converts moisture in the air into clean drinking water. Its working principle mainly includes the following aspects: 1. air collection, 2. air purification, 3. air condensation, 4. condensed water filtration. The above steps enable the moisture in the air to be converted into drinking water.

[0004] For example, the "A tea machine air condensation water making mechanism" announcement number CN205444309U applied by the applicant on 2016-02-02 includes a cabinet, a filter screen for air filtration is arranged on one side of the upper part of the cabinet, an evaporator for air cooling is arranged on the rear side of the filter screen, a condenser is connected to the rear side of the evaporator, a cooling device with a negative ion generator is arranged on the rear side of the condenser, a water receiving tray is arranged on the lower side of the evaporator, and the water receiving tray is connected to a water tank for collecting liquid water. The water making mechanism is not only simple in structure, but also convenient for condensation water making, and the discharged air contains negative air ions.

[0005] For example, the "split-type combined tea table machine device" applied for by the present applicant on 2018-06-22, with announcement number CN209003110U, the split-type combined tea table machine device includes an independent first cabinet and a second cabinet, the first cabinet is provided with an air condensation water making device and a lower water tank for holding water made by the air condensation water making device, the second cabinet is provided with a water filtering device and an upper water tank for storing filtered water, the lower water tank is connected to the water inlet end of the water filtering device through a first pipe, and the upper water tank is provided with a water outlet; the split-type combined tea table machine device has a simple structure and a reasonable design, which is conducive to people's convenience in installation and use.

[0006] The above two patents can realize air-to-water production, but cannot realize multiple functions such as air-to-water cooling. Therefore, the applicant applied for "A Multifunctional Household Heat Exchanger" announcement number CN211823229U on April 3, 2020, specifically involving a multifunctional household heat exchanger, including a liquid storage tank, a compressor, a condenser, a filter, an evaporator and a water-making device connected in sequence, the filter is connected to the evaporator through a capillary tube, and the evaporator is connected to the liquid storage tank through a reflux pipe; it also includes a first refrigeration valve, a cold water tank, a temperature sensing probe, a first copper tube, a second refrigeration valve, a cold cabinet, a thermostat and a second copper tube; although the patent can simultaneously have multiple functions of making water, heating cold water and refrigerating and preserving food; the heat of the high-temperature refrigerant output by the compressor can be fully utilized to improve the utilization efficiency of energy; but the equipment uses more components and has a higher production cost.

[0007] In addition, air-to-water and cooling water were previously produced using independent cooling water systems and water production systems (i.e. Fig.11 As shown in the figure, they use compressors of different powers to be responsible for water production and refrigeration respectively; in order to better exert the efficiency of the compressor, the water production condenser and the refrigeration condenser are of different sizes, and the diameters and lengths of capillary tubes 1 and 2 are also different. Summary of the invention

[0009] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide an energy-saving air water making machine and a working method thereof. The energy-saving air water making machine and the working method thereof are reasonably designed, which is conducive to simplifying the equipment structure and reducing the production cost.

[0010] The energy-saving air water making machine of the present invention is characterized in that it includes a compressor, a condenser, a four-way electric control valve, an evaporator and an inner cooling pipe placed in a water tank, wherein the first branch of the output end of the compressor is connected in sequence to the input end of the condenser, the output end of the condenser, the first port of the four-way electric control valve, the fourth port of the four-way electric control valve, the input end of the inner cooling pipe, the output end of the inner cooling pipe and the input end of the compressor; the second branch of the output end of the compressor is connected in sequence to the second port of the four-way electric control valve, the third port of the four-way electric control valve, the input end of the evaporator, the output end of the evaporator and the input end of the compressor; the four-way electric control valve is electrically connected to the controller to control the first port of the four-way electric control valve to be connected to the third port, the first port to be connected to the fourth port, the second port to be connected to the third port or none of them are connected.

[0011] Furthermore, it also includes a water receiving pan arranged below the evaporator for collecting condensed water generated on the evaporator fins.

[0012] Furthermore, the above-mentioned four-way electrically controlled valve includes a valve body, a valve cavity arranged in the valve body, a first port, a second port, a third port and a fourth port fixedly installed on the valve body, a valve plate driven to rotate by a motor is installed in the valve cavity, and a notch is provided on the valve plate. When the valve plate is driven to rotate by the motor, the notch is connected with the first port and the third port, the notch is connected with the first port and the fourth port, the notch is connected with the second port and the third port, or the notch is not connected with any port.

[0013] Furthermore, the motor is a stepper motor, and the overlapping area between the notch on the valve plate and each port is controlled by the motor to achieve control of the refrigerant flow rate.

[0014] Furthermore, the valve plate is installed at the lower port of a circumferential tube body having an inner gear ring, the inner gear ring of the circumferential tube body is meshed with the gear at the output end of the motor, a limit block is provided on the outer circumferential wall of the circumferential tube body, and a limit plate for limiting the rotation range of the limit block is provided on the valve body.

[0015] Furthermore, the notch on the valve plate is a fan-shaped notch with an angle of 120 degrees, and the ports are arranged in the circumferential direction in the order of the second port, the third port, the first port and the fourth port, and the angles between the centers of the ports are 60 degrees between the second port and the third port, 85 degrees between the third port and the first port, 60 degrees between the first port and the fourth port, and 155 degrees between the fourth port and the second port.

[0016] Furthermore, the controller is electrically connected to the ambient temperature and humidity collector to control the motor to adjust the flow of the refrigerant at the first port and the third port according to the temperature and humidity detected by the ambient temperature and humidity collector to obtain more water production.

[0017] Furthermore, the controller is electrically connected to a temperature collector installed in the water tank, so as to control the motor to adjust the flow of the refrigerant at the first port and the fourth port according to the temperature of the cold water detected by the temperature collector, thereby shortening the refrigeration time.

[0018] Furthermore, the compressor is a variable frequency compressor, and the fan installed beside the evaporator is an adjustable speed fan. The variable frequency compressor and the adjustable speed fan are electrically connected to the controller.

[0019] The working method of the energy-saving air water making machine of the present invention is characterized by: (1) In the starting position, the controller controls the first port, the second port, the third port and the fourth port to be blocked, the compressor does not work, and the equipment does not work at this time; (2) When water production is required, the controller controls the first port to be connected to the third port, and the other ports are not connected, and controls the compressor to work. During the operation, the condensed water generated on the evaporator fins drips into the water receiving tray located below the evaporator, so that the equipment can produce water. The controller is electrically connected to the ambient temperature and humidity collector to control the motor to adjust the flow of the refrigerant at the first port and the third port according to the temperature and humidity detected by the ambient temperature and humidity collector, so that under different ambient temperature and humidity conditions, the opening degree of the four-way electric control valve is different, so as to obtain the best water production amount; (3) When cooling water is needed, the controller controls the first port to be connected to the fourth port, and the other ports are not connected, controls the compressor to work, and generates condensation in the inner cooling pipe in the water tank to cool the water in the water tank and realize the cooling water of the equipment; the controller is electrically connected to the temperature collector, and the flow rate of the refrigerant between the first port and the fourth port is adjusted according to the temperature detected by the temperature collector and the control motor, thereby increasing the cooling water speed and shortening the refrigeration use time; (4) During low-temperature defrosting, the controller controls the second port to be connected to the third port (100% open), and the other ports are not connected. A large amount of high-temperature and high-pressure gas rushes into the evaporator to achieve rapid defrosting.

[0020] When the compressor is stopped, the four-way electric control valve is in a fully closed state, shutting off all circuits to prevent the refrigerant from flowing from the condenser to the evaporator, thereby avoiding energy loss during restart; when the compressor is started, the four-way electric control valve is first controlled to be fully opened, that is, the first port and the third port are connected, or the first port and the fourth port are connected, so that the suction and exhaust pressures quickly reach a balance, and then the compressor is controlled to start, thereby realizing light-load starting of the compressor and reducing heat loss caused by starting and stopping the compressor.

[0021] When the ambient water temperature and humidity are too high, no matter in the water making working state (the first port and the third port are connected) or the cooling working state (the first port and the fourth port are connected), the controller detects that the compressor exhaust temperature is too high (or the compressor output pressure is too high) through the temperature sensors installed at the compressor inlet and outlet, and increases the valve opening to the maximum, increases the refrigerant flow, cools the compressor return air, reduces the exhaust temperature, plays a corresponding protective role, and avoids compressor shutdown.

[0022] The air water making machine of the present invention uses the above-mentioned four-way electric control valve, which can simplify a refrigeration compressor, refrigeration valve, defrost valve and throttling capillary; and can dynamically adjust the throttling parameters according to parameters such as ambient temperature and humidity to achieve high-precision adjustment; reduce the refrigeration time and defrost time, and obtain more water under the same power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a working principle diagram of an embodiment of the present invention; Figure 2 is a working principle diagram of another embodiment of the present invention; Figure 3 is a three-dimensional diagram of a four-way electric control valve of the present invention; Figure 4 yes Figure 3 Exploded diagram of Figure 5 yes Figure 3 sectional view of Figure 6 It is a three-dimensional diagram of a circular tube; Figure 7 It is the position diagram of the valve plate notch relative to each port (starting position); Figure 8 is a position diagram of the valve plate notch being connected to the first port and the third port (water making position); Fig. 9 is a position diagram of the valve plate notch communicating with the first port and the fourth port (cooling water position); Fig.10 is a position diagram where the valve plate notch is connected to the second port and the third port (defrost position); Fig.11It is a schematic diagram of the working of the prior art. DETAILED DESCRIPTION

[0026] The energy-saving air water making machine of the present invention comprises a compressor 1, a condenser 2, a four-way electric-controlled valve 3, an evaporator 4 and an inner cooling tube 6 placed in a water tank 5, wherein the first branch of the output end of the compressor 1 is connected in sequence to the input end of the condenser 2, the output end of the condenser 2, the first port A of the four-way electric-controlled valve 3, the fourth port D of the four-way electric-controlled valve, the input end of the inner cooling tube 6, the output end of the inner cooling tube 6 and the input end of the compressor; the second branch of the output end of the compressor 1 is connected in sequence to the second port B of the four-way electric-controlled valve, the third port C of the four-way electric-controlled valve, the input end of the evaporator 4, the output end of the evaporator 4 and the input end of the compressor; the four-way electric-controlled valve 3 is electrically connected to the controller 7 to control the first port A of the four-way electric-controlled valve to be connected to the third port C, the first port A to be connected to the fourth port D, the second port B to be connected to the third port C or none of them are connected.

[0027] In order to collect condensed water, the water making machine also includes a water receiving tray 8 arranged below the evaporator for collecting condensed water generated on the evaporator fins. The water in the water receiving tray 8 can be drunk or used for other purposes after filtering, thus realizing the function of water making.

[0028] The water tank 5 is provided with a water inlet and a water outlet for replenishing and discharging water from the water tank 5 . When the inner cooling pipe 6 in the water tank 5 is in operation, it can cool the water in the water tank 5 to realize the function of refrigerating water.

[0029] If the four-way electric control valve 3 is an electromagnetic control valve, it needs to be continuously powered on, which consumes a lot of electric energy.

[0030] The four-way electrically controlled valve 3 of the present application includes a valve body 301, a valve cavity 302 arranged in the valve body, a first port A, a second port B, a third port C and a fourth port D fixedly installed on the valve body, a valve plate 303 driven to rotate by a motor 9 is installed in the valve cavity, and a notch 304 is provided on the valve plate. When working, the valve plate 303 is driven to rotate by the motor to realize that the notch 304 is connected with the first port A and the third port C, the notch 304 is connected with the first port A and the fourth port D, the notch 304 is connected with the second port B and the third port C, or the notch 304 is not connected with any port.

[0031] Since the four-way electric control valve 3 of the present application adopts the above structure, different passages can be realized by briefly starting the motor when different passages are needed, which not only has a good energy-saving effect but also can extend the service life of the four-way electric control valve 3.

[0032] The above-mentioned motor is preferably a stepper motor, and the gap on the valve plate and the overlapping area of ​​each port are controlled by the motor to achieve control of the refrigerant flow rate. Specifically, the above-mentioned controller 7 is electrically connected to the ambient temperature and humidity collector 10, and the motor is controlled according to the temperature and humidity detected by the ambient temperature and humidity collector to adjust the flow rate of the refrigerant at the first port and the third port to obtain more water production.

[0033] The controller 7 is electrically connected to the temperature collector 11 installed in the water tank, so as to control the motor 9 to adjust the flow of the refrigerant at the first port and the fourth port according to the temperature of the cold water detected by the temperature collector, thereby shortening the refrigeration time.

[0034] The compressor 1 can be a variable frequency compressor, and the fan 12 installed beside the evaporator can be a speed-adjustable fan. The variable frequency compressor and the speed-adjustable fan are electrically connected to a controller.

[0035] The mechanical structure of the four-way electric control valve 3 is shown in the figure, and the gear 901 on the output end of the commercially available motor 9 is meshed with the inner gear ring 305 of the valve plate 303.

[0036] The valve plate 303 is installed at the lower port of a circumferential tube body 306 having an inner gear ring 305 (or the valve plate 303 and the circumferential tube body 306 are made in one piece), the inner gear ring 305 of the circumferential tube body is meshed with the gear 901 at the output end of the motor 9, a limit block 307 is provided on the outer circumferential wall of the circumferential tube body 306, and a limit plate 308 for limiting the rotation range of the limit block is provided on the valve body. When the motor 9 is energized (the controller 7 controls the forward or reverse rotation of the output gear 901 of the motor 9, as well as the forward or reverse rotation time), the notch of the valve plate 303 is connected with different ports.

[0037] For the sake of reasonable design, the notch 304 on the valve plate is a fan-shaped notch with an angle of 120 degrees. The ports are arranged in the circumferential direction in the order of the second port, the third port, the first port and the fourth port. The angles between the centers of the ports are 60 degrees between the second port and the third port, 85 degrees between the third port and the first port, 60 degrees between the first port and the fourth port, and 155 degrees between the fourth port and the second port.

[0038] Working method of the energy-saving air water making machine of the present invention: (1) In the starting position, the controller controls the first port, the second port, the third port and the fourth port to be blocked, the compressor does not work, and the equipment does not work at this time (the relative position of the valve plate gap controlled by the controller and each port is as follows Figure 7 shown); (2) When water production is required, the controller controls the first port to be connected to the third port, and the other ports are not connected (the relative positions of the valve plate notch and the first port and the third port are as shown in Figure 8As shown), the compressor is controlled to work. During the working process, the condensed water generated on the evaporator fins drips into the water receiving tray located below the evaporator to realize water production of the equipment. The controller is electrically connected to the ambient temperature and humidity collector. The motor is controlled according to the temperature and humidity detected by the ambient temperature and humidity collector 10 to adjust the flow of the refrigerant at the first port and the third port, so that under different ambient temperature and humidity conditions, the opening degree of the four-way electric control valve is different to obtain the best water production amount; When the ambient temperature is 35 degrees and the relative humidity is 60%, the valve opening degree is 80% (80% of the maximum flow rate between the first port and the third port, and the maximum flow rate means that the gap completely covers the two ports); when the ambient temperature is 25 degrees and the relative humidity is 60%, the valve opening degree is 60%; when the ambient temperature is 20 degrees and the relative humidity is 60%, the valve opening degree is 50%.

[0039] When the ambient temperature and humidity are high, the moisture content in the air is high. It takes more cooling capacity to condense it into water, which reduces the surface temperature of the evaporator. At this time, the valve opening should be larger; when the ambient temperature and humidity are lower, the moisture content in the air is lower, and not much cooling capacity is needed. At this time, the valve opening should be smaller (if equipped with a variable frequency compressor, the compressor operating frequency can also be reduced to reduce power consumption); reduce the waste of refrigeration capacity, avoid insufficient heat absorption and evaporation in the evaporator, and return low-temperature and low-pressure liquid to the compressor, causing liquid hammer and damaging the compressor; by adjusting the opening of the valve, the ambient temperature and humidity entering the frosting condition can be lowered, expanding the temperature and humidity range of normal water production.

[0040] (3) When cooling water is needed, the controller controls the first port to be connected to the fourth port, and the other ports are not connected, and controls the compressor to work (the relative position of the valve plate notch and the first port and the fourth port is as shown in Fig. 9 As shown), the inner cooling tube in the water tank generates condensation to cool the water in the water tank, thereby realizing the refrigeration water of the equipment. The controller 7 is electrically connected to the temperature collector 11, and the motor 9 is controlled according to the temperature detected by the temperature collector to adjust the flow of the refrigerant at the first port and the fourth port, thereby increasing the refrigeration water speed and shortening the refrigeration use time; When the ambient temperature is 35 degrees and the water temperature of the cold water tank (i.e., water tank 5) is above 15 degrees, the valve opening degree is 70% (referring to 70% of the maximum flow rate between the first port and the fourth port); when the ambient temperature is 35 degrees and the water temperature of the cold water tank is between 10 and 15 degrees, the valve opening degree is 50%; when the ambient temperature is 35 degrees and the water temperature of the cold water tank is between 6 and 10 degrees, the valve opening degree is 30%; when the ambient temperature is 35 degrees and the water temperature of the cold water tank is above 15 degrees and the water temperature needs to be lowered to below 6 degrees, more cooling capacity is required.

[0041] Lower the surface temperature of the inner cooling tube, and the valve opening should be larger at this time; when the cold water temperature drops to between 10-15 degrees or 6-10 degrees, there is already thin ice or slightly thick ice on the surface of the inner cooling tube, and its ability to absorb and conduct heat is worse than water, so the required cooling capacity is relatively small or less. The valve opening should be closed or closed again (if equipped with a variable frequency compressor, the compressor operating frequency can also be reduced to reduce power consumption); to reduce the waste of refrigeration capacity and avoid insufficient heat absorption and evaporation in the inner cooling tube, or the low-temperature and low-pressure liquid returns to the compressor, causing liquid hammer and damaging the compressor.

[0042] (4) During low temperature defrosting, the controller 7 controls the second port to be connected to the third port (100% open), and the other ports are not connected (the relative positions of the valve plate notch and the second port and the third port are as shown in Fig.10 As shown in the figure), a large amount of high-temperature and high-pressure gas rushes into the evaporator to achieve rapid defrosting.

[0043] The defrosting principle of this application is: when working under low temperature conditions (ambient temperature below 18 degrees), the temperature of condensed water on the surface of the evaporator is low enough to freeze, affecting wind and air flow. When the controller detects that the surface of the evaporator is frozen through the temperature sensor installed on the evaporator, the defrost valve opens (that is, the second port and the third port are 100% open and connected), and the high-temperature and high-pressure gas discharged from the exhaust port of the compressor directly enters the internal pipe of the evaporator, directly melting the ice on the surface.

[0044] The controller detects that the evaporator ice has melted (temperature is greater than 4 degrees) through the temperature sensor installed on the evaporator, and then closes the defrost valve. At this time, the system enters the water making (or cooling water) state again.

[0045] The present application can reduce the energy loss in the start-stop process during the start-stop control of the compressor: the four-way electric control valve 3 of the present invention can be in a fully closed state when the compressor 1 is shut down, shutting off all circuits to prevent the refrigerant from flowing from the condenser 2 to the evaporator 4, thereby avoiding energy loss during restarting; when the compressor 1 is started, the four-way electric control valve 3 is first controlled to be fully opened, that is, the first port and the third port are connected, or the first port and the fourth port are connected, so that the suction and exhaust pressures quickly reach a balance, and then the compressor 1 is controlled to start, thereby achieving light-load starting of the compressor and reducing heat loss caused by starting and stopping the compressor.

[0046] When the four-way electric control valve 3 of the present invention is used, the exhaust temperature of the compressor can be controlled: when the ambient water temperature and humidity are too high, whether in the water production working state (the first port and the third port are connected) or the refrigeration working state (the first port and the fourth port are connected), the controller 7 detects through the temperature sensor 13 that the compressor exhaust temperature is too high (or the compressor output pressure is too high), and increases the valve opening (that is, the overlap area between the notch on the valve plate and the port is the largest) to the maximum (if equipped with a variable frequency compressor, the compressor operating frequency can be reduced at the same time, if equipped with a speed-adjustable fan, the fan speed can be increased), the refrigerant flow rate increases, the compressor return air is cooled, thereby reducing the exhaust temperature, playing a corresponding protective role, and avoiding compressor shutdown. The use of this solution can save components such as refrigeration compressors, capillaries, refrigeration valves, defrost valves, refrigeration fans, etc.

[0047] Compared with the prior art, the four-way electric control valve 3 of the present invention, when the defrost circuit is open, the other two circuits are blocked. During defrosting, the valve opening degree is maximized (the second port and the third port are 100% open and connected), and the high-temperature and high-pressure gas discharged from the compressor all enters the defrost circuit, and the refrigerant circulates at a large flow rate, thereby shortening the defrost time and improving the defrost efficiency.

[0048] The air water making machine of the present invention uses the above-mentioned four-way electric control valve, which can simplify a refrigeration compressor, refrigeration valve, defrost valve and throttling capillary; and can dynamically adjust the throttling parameters according to parameters such as ambient temperature and humidity to achieve high-precision adjustment; reduce the refrigeration time and defrost time, and obtain more water under the same power consumption.

[0049] The present invention can obtain the maximum water production under high temperature and high humidity conditions when the compressor works at high frequency and the fan works at low speed. At night, the compressor and the fan both work at low speed to reduce noise and reduce the impact on people. That is, the present invention can adjust the valve opening degree of the corresponding port according to different working conditions, cooperate with the compressor and fan speed regulation, and the machine works in the best state to obtain the maximum water production with the minimum power consumption.

[0050] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. An energy-saving air water generator, characterized in that: It includes a compressor, a condenser, a four-way electric control valve, an evaporator and an inner cooling pipe placed in a water tank, wherein the first branch of the output end of the compressor is connected in sequence to the input end of the condenser, the output end of the condenser, the first port of the four-way electric control valve, the fourth port of the four-way electric control valve, the input end of the inner cooling pipe, the output end of the inner cooling pipe and the input end of the compressor; the second branch of the output end of the compressor is connected in sequence to the second port of the four-way electric control valve, the third port of the four-way electric control valve, the input end of the evaporator, the output end of the evaporator and the input end of the compressor; the four-way electric control valve is electrically connected to a controller to control the four-way electric control valve to realize that the first port of the four-way electric control valve is connected to the third port, the first port is connected to the fourth port, the second port is connected to the third port or none of them are connected.

2. The energy-saving air water generator according to claim 1, characterized in that: The utility model also comprises a water receiving pan which is arranged below the evaporator and is used for collecting condensed water generated on the fins of the evaporator.

3. The energy-saving air water generator according to claim 1, characterized in that: The four-way electrically controlled valve includes a valve body, a valve cavity arranged in the valve body, a first port, a second port, a third port and a fourth port fixedly mounted on the valve body, a valve plate driven to rotate by a motor is installed in the valve cavity, and a notch is arranged on the valve plate. When the valve plate is driven to rotate by the motor, the notch is connected with the first port and the third port, the notch is connected with the first port and the fourth port, the notch is connected with the second port and the third port, or the notch is not connected with any port.

4. The energy-saving air water generator according to claim 3, characterized in that: The motor is a stepping motor, and the overlapping area between the notch on the valve plate and each port is controlled by the motor to achieve control of the refrigerant flow rate.

5. The energy-saving air water generator according to claim 4, characterized in that: The valve plate is installed at the lower end of a circumferential tube body with an inner gear ring. The inner gear ring of the circumferential tube body meshes with the gear at the output end of the motor. A limit block is provided on the outer circumferential wall of the circumferential tube body, and a limit plate for limiting the rotation range of the limit block is provided on the valve body.

6. The energy-saving air water generator according to claim 5, characterized in that: The notch on the valve plate is a fan-shaped notch with an angle of 120 degrees. The ports are arranged in the circumferential direction in the order of the second port, the third port, the first port and the fourth port. The angles between the centers of the ports are 60 degrees between the second port and the third port, 85 degrees between the third port and the first port, 60 degrees between the first port and the fourth port, and 155 degrees between the fourth port and the second port.

7. The energy-saving air water generator according to claim 4, 5 or 6, characterized in that: The controller is electrically connected to the ambient temperature and humidity collector to control the motor to adjust the flow of the refrigerant at the first port and the third port according to the temperature and humidity detected by the ambient temperature and humidity collector, thereby obtaining more water production; the controller is electrically connected to the temperature collector installed in the water tank to control the motor to adjust the flow of the refrigerant at the first port and the fourth port according to the temperature of the cold water detected by the temperature collector, thereby shortening the refrigeration time.

8. The energy-saving air water generator according to claim 1, characterized in that: The compressor is a variable frequency compressor, and the fan installed beside the evaporator is a speed-adjustable fan. The variable frequency compressor and the speed-adjustable fan are electrically connected to a controller.

9. A method for operating the energy-saving air water generator according to any one of claims 1 to 8, characterized in that: (1) In the starting position, the controller controls the first port, the second port, the third port and the fourth port to be blocked, the compressor does not work, and the equipment does not work at this time; (2) When water production is required, the controller controls the first port to be connected to the third port, and the other ports are not connected, and controls the compressor to work. During the operation, the condensed water generated on the evaporator fins drips into the water receiving tray located below the evaporator, so that the equipment can produce water. The controller is electrically connected to the ambient temperature and humidity collector to control the motor to adjust the flow of the refrigerant at the first port and the third port according to the temperature and humidity detected by the ambient temperature and humidity collector, so that under different ambient temperature and humidity conditions, the opening degree of the four-way electric control valve is different, so as to obtain the best water production amount; (3) When cooling water is needed, the controller controls the first port to be connected to the fourth port, and the other ports are not connected, controls the compressor to work, and generates condensation in the inner cooling pipe in the water tank to cool the water in the water tank and realize the cooling water of the equipment; the controller is electrically connected to the temperature collector, and the flow rate of the refrigerant between the first port and the fourth port is adjusted according to the temperature detected by the temperature collector and the control motor, thereby increasing the cooling water speed and shortening the refrigeration use time; (4) During low-temperature defrosting, the controller controls the second port to be connected to the third port (100% open), and the other ports are not connected. A large amount of high-temperature and high-pressure gas rushes into the evaporator to achieve rapid defrosting.

10. The operating method of the energy-saving air water generator according to claim 9, characterized in that: When the compressor is stopped, the four-way electric control valve is in a fully closed state, shutting off all circuits to prevent the refrigerant from flowing from the condenser to the evaporator, avoiding energy loss when starting again; when the compressor is started, the four-way electric control valve is first controlled to be fully opened, that is, the first port and the third port are connected, or the first port and the fourth port are connected, so that the suction and exhaust pressures quickly reach a balance, and then the compressor is controlled to start, so as to realize the light-load start of the compressor and reduce the heat loss caused by the start and stop of the compressor; When the ambient water temperature and humidity are too high, no matter in the water making working state (the first port and the third port are connected) or the cooling working state (the first port and the fourth port are connected), the controller detects that the compressor exhaust temperature is too high (or the compressor output pressure is too high) through the temperature sensors installed at the compressor inlet and outlet, and increases the valve opening to the maximum, increases the refrigerant flow, cools the compressor return air, reduces the exhaust temperature, plays a corresponding protective role, and avoids compressor shutdown.

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