All-working-condition air water making unit

Abstract

The invention discloses an all-working-condition air water production unit, which belongs to the technical field of air water production, and comprises a high-humidity air inlet channel, a low-humidity air inlet channel, a channel switching device and a water production channel, and the high-humidity air inlet channel and the low-humidity air inlet channel are both communicated with the water production channel; air flowing out of the high-humidity air inlet channel or the low-humidity air inlet channel enters the water production channel so that the water production channel can produce water. According to the invention, the high-humidity operation mode or the low-humidity operation mode is automatically switched according to the air inlet humidity. A traditional unit can only operate under a single working condition. According to the invention, the optimal energy efficiency and water production rate can be kept in different environments.

Description

TECHNICAL FIELD

[0001] The present application relates to a full-condition air water making unit, belonging to the technical field of air water making. BACKGROUND

[0002] With the global water resources becoming increasingly scarce, the demand for air water making equipment that can stably make clean drinking water from external fresh water in many regions is growing. At the same time, the relative humidity and dew point of some regions vary greatly at different time periods. In a high-humidity environment, although the water vapor is sufficient, water needs to be made quickly and in large flow. In a low-humidity environment, although the humidity is weak, there is still a demand for water making.

[0003] Most air water making units rely on cooling and dehumidification. Usually, a compressor and an evaporator are combined to condense and separate water by cooling the inlet air to below the dew point. For example, the common heat pump dehumidification type water making unit in the market is usually efficient in high-humidity conditions, but in dew point conditions below the freezing point (0 ℃), the evaporator is easy to frost and block, and needs to be defrosted periodically or equipped with an electric heating regeneration device. In addition, there are a few deep dehumidification systems that combine adsorption wheels and steam / electric heating regeneration, but their high-temperature regeneration energy consumption is too large, and the structure is complex and expensive, which is not conducive to large-scale promotion.

[0004] In traditional equipment, the simple cooling and dehumidification method is easy to freeze on the surface of the evaporator when the dew point is below 10 ℃ or the humidity is <7.0 g / kg, which leads to water production interruption or efficiency drop.

[0005] Therefore, a full-condition air water making unit is needed to continuously make water under the change of relative humidity and dew point at different time periods. The goal of stable, energy-saving and efficient water making throughout the year is achieved. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a full-condition air water making unit, which solves the problem of easy freezing in traditional equipment, leading to water making interruption or efficiency drop, and low water making efficiency when the environment changes greatly.

[0007] The technical problem to be solved by the present application is solved by the following technical solution: a full-condition air water making unit, comprising

[0008] A high-humidity inlet air passage, when the humidity of the air is higher than a preset humidity A, the air flows into the high-humidity inlet air passage, and the water making unit enters a high-humidity operation mode;

[0009] A low-humidity inlet air passage, when the humidity of the air is lower than the preset humidity B, the air flows into the low-humidity inlet air passage, and the water making unit enters a low-humidity operation mode;

[0010] a channel switching device, which controls the air to flow into the high-humidity air inlet channel or the low-humidity air inlet channel according to whether the humidity of the air is higher than the preset humidity A or the humidity of the air is lower than the preset humidity B; and the channel switching device does not act when the humidity of the air is between the preset humidity B and the preset humidity A;

[0011] a water production channel, which is in communication with the high-humidity air inlet channel and the low-humidity air inlet channel, and the air flowing out of the high-humidity air inlet channel or the low-humidity air inlet channel enters the water production channel to make the water production channel produce water.

[0012] Preferably, the water production device further comprises

[0013] a dehumidification runner, which has an axis parallel to the ground, and is divided into a regeneration side and an adsorption side by a partition plate along the axis parallel to the ground, the adsorption side is capable of adsorbing water in the air, and the regeneration side is capable of desorbing the water adsorbed by the adsorption side into the air;

[0014] the regeneration side is located in the low-humidity air inlet channel, and the regeneration side divides the low-humidity air inlet channel into a low-humidity air heating area and a low-humidity air cooling area;

[0015] the adsorption side is located in the water production channel, and the adsorption side divides the water production channel into a main water production area and a treated air heating area;

[0016] when the air enters the low-humidity air inlet channel, the air first enters the low-humidity air heating area to be heated, then passes through the regeneration side of the dehumidification runner to increase humidity, and finally enters the low-humidity air cooling area to reduce temperature and then enters the water production channel;

[0017] the main water production area and the treated air heating area are located in the water production channel, and when the air from the high-humidity air inlet channel or the low-humidity air inlet channel enters the water production channel, the air first enters the main water production area to produce water, then passes through the adsorption side of the dehumidification runner to reduce humidity, and is then discharged to the outside of the water production machine.

[0018] Preferably, the water production device further comprises

[0019] a heat pump system, which comprises a first group of heat pump circuits and a second group of heat pump circuits;

[0020] The first group of heat pump circuits comprises a compressor, a three-way valve, a lower condenser one, an upper condenser one, an expansion valve one, an evaporator one, the outlet of the compressor is connected with the inlet D of the three-way valve, the outlet E of the three-way valve is connected with the inlet of the lower condenser one, the outlet C of the three-way valve is connected with the inlet of the upper condenser one, the outlets of the lower condenser one and the upper condenser one are connected with the inlet of the expansion valve one in one-way flow, the outlet of the expansion valve one is connected with the inlet of the evaporator one, and the outlet of the evaporator one is connected with the inlet of the compressor one;

[0021] The second group of heat pump circuits comprises a compressor two, an evaporator two, an expansion valve two, a condenser two, and a heat dissipation fan, the outlet of the compressor two is connected with the inlet of the evaporator two, the outlet of the evaporator two is connected with the inlet of the expansion valve two, the outlet of the expansion valve two is connected with the inlet of the condenser two, the outlet of the condenser two is connected with the inlet of the compressor two, and the heat dissipation fan is located beside the condenser two;

[0022] The upper condenser one is located in the low-humidity air heating area, and the upper condenser one can provide a heat source required for regeneration desorption of the dehumidification runner;

[0023] The evaporator one and the evaporator two are located in the main water production area;

[0024] The lower condenser two is located in the treated air heating area.

[0025] Preferably, further comprising

[0026] A heat recovery system, the heat recovery system comprises a circulating water pump, a heat recovery cooler, and a heat recovery heater, the outlet of the circulating water pump is connected with the inlet of the heat recovery cooler, the outlet of the heat recovery cooler is connected with the inlet of the heat recovery heater, and the outlet of the heat recovery heater is connected with the inlet of the circulating water pump;

[0027] The heat recovery heater is located in the low-humidity air heating area;

[0028] The heat recovery cooler is located in the low-humidity air cooling area.

[0029] Preferably, when the air flows into the low-humidity air inlet channel, the air sequentially passes through the heat recovery heater, the upper condenser one, the upper half of the dehumidification runner, the heat recovery cooler, and then enters the water production channel from the low-humidity air inlet channel;

[0030] When the air flows into the high-humidity air inlet channel, the air only passes through the high-humidity air inlet channel without being treated, and then enters the water production channel from the high-humidity air inlet channel.

[0031] When the air enters the water making passage, the air passes through the evaporator one, the evaporator two, the lower half of the dehumidification runner and the lower condenser one in turn.

[0032] Preferably, further comprising

[0033] The water treatment system comprises a water treatment system, a water tank, a water pump 41 and a water storage barrel 42. The water tank is used to collect water produced by the water making machine. The water tank is in communication with the water storage barrel. The water pump is arranged in the water tank. The water pump transports water in the water tank to the water storage barrel.

[0034] Preferably, the water treatment system further comprises a water storage barrel high-level switch, a water storage barrel low-level switch, a water purifier, a purified water use device, a water tank high-level switch and a water tank low-level switch.

[0035] The water tank high-level switch and the water tank low-level switch are arranged in the water tank. The water storage barrel high-level switch and the water storage barrel low-level switch are arranged in the water storage barrel. Water from the water storage barrel is first treated by the water purifier and then enters the purified water use device.

[0036] The feedback information of the water tank high-level switch and the water tank low-level switch can control the start and stop of the water pump.

[0037] The feedback information of the water storage barrel high-level switch and the water storage barrel low-level switch can control the start and stop of the water making machine group.

[0038] Preferably, further comprising a control system, the control system comprising a sensor and a controller.

[0039] The sensor is arranged at the air inlet of the water making machine group. The sensor can detect the humidity condition of the air passing through the air inlet and feed back the humidity condition to the controller.

[0040] The controller issues an operation instruction to control the operation of the water making machine group according to the humidity condition.

[0041] Preferably, the operation instruction comprises

[0042] The start and stop of the passage switching device, the switching of the outlet C and the outlet E of the three-way valve, the start and stop of the circulating water pump, the start and stop of the compressor one and the start and stop of the compressor two.

[0043] Preferably, when the water making machine group enters a high-humidity operation mode, the controller issues an instruction to control the passage switching device to be turned on. The air enters the high-humidity air inlet passage, the water making passage and then is discharged from the water making machine group in turn.

[0044] The controller issues an instruction to control the circulating water pump to be closed, so that the heat recovery system stops running;

[0045] The controller issues an instruction to control the three-way valve to switch from outlet C to outlet E, at which time the lower condenser one enters the first group of heat pump circuits, and the upper condenser one exits the first group of heat pump circuits.

[0046] Preferably, when the water making unit enters the high humidity operation mode, the flow path of the refrigerant in the first group of heat pump circuits is that the liquid refrigerant absorbs heat from the air when passing through the evaporator one to become high-temperature gaseous refrigerant, the high-temperature gaseous refrigerant passes through the compressor one and the outlet E of the three-way valve in turn and then enters the lower condenser one, the high-temperature gaseous refrigerant releases heat to the air when passing through the lower condenser one to become liquid refrigerant, and the liquid refrigerant flows into the closed loop path of the evaporator one after passing through the expansion valve one;

[0047] The flow path of the refrigerant in the second group of heat pump circuits is that the liquid refrigerant absorbs heat from the air when passing through the evaporator two to become high-temperature gaseous refrigerant, the high-temperature gaseous refrigerant passes through the compressor two and then enters the condenser two, the high-temperature gaseous refrigerant releases heat to the air when passing through the condenser two to become liquid refrigerant, and the liquid refrigerant flows into the closed loop path of the evaporator two after passing through the expansion valve two;

[0048] The air in the water making passage blows to the main water making area, the adsorption side of the dehumidification runner, and the processed air heating area in turn, the air in the main water making area is heated twice by blowing to the evaporator one first and then to the evaporator two, and the water in the air is precipitated twice in the evaporator one and the evaporator two, the air coming out of the main water making area blows to the adsorption side of the dehumidification runner, and the water in the air is absorbed by the adsorption side of the dehumidification runner, the air coming out of the adsorption side of the dehumidification runner blows to the lower condenser one and is heated, and the air takes away the heat released by the lower condenser one and is discharged from the water making unit.

[0049] Preferably, when the water making unit enters the low humidity operation mode, the controller issues an instruction to control the passage switching device to be closed, and the air enters the low humidity air inlet passage and the water making passage in turn and is then discharged from the water making unit;

[0050] The controller issues an instruction to control the circulating water pump to be started, so that the heat recovery system starts running;

[0051] The controller issues an instruction to control the three-way valve to switch from outlet E to outlet C, at which time the lower condenser one exits the first group of heat pump circuits, and the upper condenser one enters the first group of heat pump circuits.

[0052] Preferably, when the water making unit enters the low humidity operation mode, the flow path of the refrigerant in the first group of heat pump circuits is that the liquid refrigerant absorbs heat from the air when passing through the evaporator one to become high-temperature gaseous refrigerant, the high-temperature gaseous refrigerant passes through the compressor one and the outlet C of the three-way valve in turn and then enters the upper condenser one, the high-temperature gaseous refrigerant releases heat to the air when passing through the upper condenser one to become liquid refrigerant, and the liquid refrigerant flows into the closed loop path of the evaporator one after passing through the expansion valve one;

[0053] The flow path of the refrigerant in the second group of heat pump circuits is that the liquid refrigerant absorbs heat from the air when passing through the evaporator two to become high-temperature gaseous refrigerant, the high-temperature gaseous refrigerant passes through the compressor two and then enters the condenser two, the high-temperature gaseous refrigerant releases heat to the air when passing through the condenser two to become liquid refrigerant, and the liquid refrigerant flows into the closed loop path of the evaporator two after passing through the expansion valve two;

[0054] The flow path of the water medium in the heat recovery system is that the water medium flows into the heat recovery cooler to become high-temperature water medium, the high-temperature water medium takes away the heat absorbed by the heat recovery cooler from the air, the high-temperature water medium enters the heat recovery heater and transfers heat to the heat recovery heater to become low-temperature water medium, and the heat recovery heater transfers heat to the air; the water medium enters the circulating water pump and then enters the closed loop path of the heat recovery cooler;

[0055] The air entering the low humidity channel is first blown to the heat recovery heater for the first heating, and then blown to the upper condenser one for the second heating, the air after the two times of heating is blown to the regeneration side of the dehumidification runner to take away the moisture in the regeneration side and increase the humidity of the air, the air out of the regeneration side of the dehumidification runner is blown to the heat recovery cooler for the sensible heat cooling, and the air passing through the heat recovery cooler enters the water making channel; the air in the water making channel is blown to the main water making area, the adsorption side of the dehumidification runner and the processed air heating area in turn, the air in the main water making area is first blown to the evaporator one and then blown to the evaporator two to be heated twice, and the moisture in the air is precipitated twice in the evaporator one and the evaporator two; the air out of the main water making area is blown to the adsorption side of the dehumidification runner, and the moisture in the air is taken away by the adsorption side of the dehumidification runner; the air out of the adsorption side of the dehumidification runner is blown to the lower condenser one, at this time, the lower condenser one is not in operation, and the air is not heat-exchanged and discharged out of the water making unit.

[0056] Preferably, the water tank is arranged in the main water making area and arranged below the evaporator one and the evaporator two.

[0057] Preferably, when the water making unit enters the low humidity operation mode, the low humidity air cooling area functions as a secondary water making area; a secondary water tank is arranged in the low humidity air cooling area, and the secondary water tank is arranged below the heat recovery cooler; and the condensed water collected by the secondary water tank is transported to the water tank through a pipeline.

[0058] Preferably, the high humidity air inlet channel is arranged outside the cabinet of the water making unit or arranged inside the cabinet of the water making unit.

[0059] Preferably, the preset humidity A is 15 g / kg of moisture content of dry air, and the preset humidity B is 8 g / kg of moisture content of dry air.

[0060] Preferably, when the humidity of air is 8 g / kg-15 g / kg of moisture content, and the water making unit is converted from the low humidity operation mode to the high humidity operation mode, the channel switching device does not act, and air continues to enter the low humidity air inlet channel until the humidity of air is greater than the preset humidity A, the channel switching device acts, the low humidity air inlet channel is closed, the high humidity air inlet channel is opened, air enters the high humidity air inlet channel, and the water making unit enters the high humidity operation mode.

[0061] When the humidity of air is 8 g / kg-15 g / kg of moisture content, and the water making unit is converted from the high humidity operation mode to the low humidity operation mode, the channel switching device does not act, and air continues to enter the high humidity air inlet channel until the humidity of air is less than the preset humidity B, the channel switching device acts, the high humidity air inlet channel is closed, the low humidity air inlet channel is opened, air enters the low humidity air inlet channel, and the water making unit enters the low humidity operation mode.

[0062] When the humidity of air is 8 g / kg-15 g / kg of moisture content, and the water making unit is started, the controller gives an operation instruction of starting one of the high humidity operation mode and the low humidity operation mode.

[0063] Preferably, the high humidity air inlet channel is specifically arranged as a bypass air duct arranged outside the cabinet of the water making unit.

[0064] Preferably, the channel switching device is specifically arranged as an electric air valve.

[0065] The present application has the following beneficial effects:

[0066] (1) Through the application, high-humidity operation mode and low-humidity operation mode are provided, in the high-humidity operation mode, the high-humidity air inlet channel is opened, the lower condenser loop is controlled by the three-way valve, and air directly enters the water making channel to make water without passing through too many components, the air has high water content, and a large amount of humid air is quickly cooled below the dew point, and a large amount of moisture is precipitated in a short time; in the low-humidity operation mode, the high-humidity air inlet channel is closed, the upper condenser regeneration heating loop is controlled by the three-way valve, and the desorption and adsorption characteristics of the dehumidification runner are matched, so that the ice point limit is broken to realize low-humidity water making; the high-humidity operation mode or the low-humidity operation mode is automatically switched according to the inlet air humidity, and the application can maintain the best energy efficiency and water making rate in different environments.

[0067] (2) Through the application, the dehumidification runner can adsorb the trace amount of moisture that is difficult to condense by the evaporator, and the moisture is desorbed and transferred to the air before the evaporator by the aid of the medium-temperature regeneration air, so that the evaporator can condense the moisture, break the ice point limit of the surface temperature of the evaporator, ensure that water can be made at low dew point, and make water more stable by the inertia of the runner to smooth air flow fluctuations.

[0068] (3) Through the application, the three-way valve and the upper / lower condenser are provided, the heat generated by the heat pump system is guided to the upper condenser to provide heat for the desorption and regeneration of the dehumidification runner in the low-humidity working condition, and is guided to the lower condenser in the high-humidity working condition, and the low-temperature outlet air of the evaporator is used to improve the condensation effect of the heat pump system and improve the energy efficiency.

[0069] (4) Through the application, the heat source of the regeneration section is taken from the waste heat released by the upper condenser of the heat pump system, and is recycled to be used for the regeneration heating of the dehumidification runner. Without additional heating energy consumption, the condensation waste heat that is originally to be dissipated is efficiently reused to achieve the effect of energy saving.

[0070] (5) Through the application, in order to prevent the unit frequency switching mode from causing great fluctuation to the system during the switching process of the high-humidity operation mode and the low-humidity operation mode, when the absolute humidity of air entering the water making unit is greater than 15 g / kg of dry air, the high-humidity operation mode is executed, when the absolute humidity of air entering the water making unit is less than 8 g / kg of dry air, the low-humidity operation mode is executed, and when the absolute humidity of air is between 8 g / kg and 15 g / kg of dry air, it is set to belong to the control dead zone; when the high-humidity operation mode is converted into the low-humidity operation mode, the absolute humidity of air is first made to be less than 8 g / kg before the working mode is switched, and when the low-humidity operation mode is converted into the high-humidity operation mode, the absolute humidity of air is first made to be greater than 15 g / kg before the working mode is switched, so that the working frequency of the water making unit will not suddenly change to overcome the great fluctuation to the system. BRIEF DESCRIPTION OF DRAWINGS

[0071] Figure 1 It is a structural schematic diagram of the application.

[0072] Figure 2 Schematic diagram of the low-humidity operation mode of the present invention.

[0073] Figure 3 Schematic diagram of the high humidity operation mode of the present invention.

[0074] In the figure: 111-compressor 1, 112-evaporator 1, 113-upper condenser 1, 114-lower condenser 2, 115-expansion valve 1, 116-three-way valve, C, D, E-three connection ports of the three-way valve, 121-compressor 2, 122-evaporator 2, 123-condenser 2, 124-cooling fan, 125-expansion valve 2, 2-dehumidification wheel, 31-heat recovery cooler, 32-heat recovery Heater, 33-circulating water pump, 41-water pump, 42-water storage tank, 421-water storage tank high liquid level switch, 422-water storage tank low liquid level switch, 423-water purifier, 424-water purification equipment, 431-water tank high liquid level, 432-water tank low liquid level, 5-bypass air duct, 6-electric air valve, 71-air filter, 72-blower, 81-air inlet louver, 82-air outlet louver, 9-partition. DETAILED DESCRIPTION

[0075] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments.

[0076] Example 1

[0077] like Figures 1-3 As shown, a full-operation air-to-water unit includes a box body, a heat pump system, a dehumidification wheel, a water treatment system, and a control device.

[0078] The housing includes a left section, a middle section, and a right section. The left and right sections are each equipped with a heat pump system, the middle section is equipped with a water treatment system, and the right section is equipped with a dehumidification wheel 2. The heat pump system operates in two modes: a high-humidity mode and a low-humidity mode. The high-humidity mode is suitable for situations with high humidity in the incoming air, while the low-humidity mode is suitable for situations with low humidity in the incoming air. By switching between these two modes, water production can be achieved in different operating environments. The dehumidification wheel 2 overcomes the limitations of the cooling and dehumidification freezing point during water production, enabling stable water production in low-dew-point operating environments. The control device ensures the overall operation of the device.

[0079] Reference Figure 1The partition 9 divides the right section of the box into upper and lower parts. The upper part is provided with the evaporator 112 and the heat recovery heater 32, and the lower part is provided with the evaporator 122 and the lower condenser 144. The partition 9 is provided with an opening near the middle section of the box, and the airflow can pass through the partition 9 from the opening. The air inlet shutter 81 is arranged above the partition 9 at the right edge of the right section of the box, and the air outlet shutter 82 is arranged below the partition 9. The electric air valve 6 is arranged at the top right side of the right section, and the bypass air duct 5 is arranged near the middle of the top of the right section. The heat dissipation fan 124 is arranged at the top of the left section. The electric air valve 6 is arranged at one end of the bypass air duct 5, and the bypass air duct can be opened by opening the electric air valve 6.

[0080] The air filter 71 is arranged at the top right edge of the right section of the box. The air filter 71 is a rectangular frame filter screen, which is arranged in front of the inlet of the heat recovery heater 32 to prevent dust.

[0081] The air inlet shutter 81 is arranged at the top right edge of the right section of the box. The control device can control the electric air valve 6 to realize airflow bypassing or passing through the heat recovery when the humidity is high or low.

[0082] In this embodiment, the heat pump system is provided with two groups, and the heat pump system includes a first group of heat pump circuits and a second group of heat pump circuits.

[0083] The first group of heat pump circuits includes a compressor, an evaporator, a condenser, an expansion valve, and a three-way valve. The condenser includes an upper condenser and a lower condenser. In the first group of heat pump circuits, a compressor 111, an evaporator 112, an upper condenser 113, a lower condenser 114, an expansion valve 115, and a three-way valve 116 are arranged. In the second group of heat pump circuits, a compressor 121, an evaporator 122, a condenser 123, a heat dissipation fan 124, and an expansion valve 125 are arranged.

[0084] Referring to Figure 1 The compressor 111 is arranged at the lower right edge of the right section of the box, the evaporator 112 is arranged at the upper left edge of the right section of the box, the upper condenser 113 is arranged at the upper middle of the right section of the box, and the lower condenser 114 is arranged at the bottom of the upper condenser 113. The three-way valve 116 is provided with three connection ports C, D, and E.

[0085] The compressor 111 can suck in low-pressure steam, compress and send out high-pressure steam. The low end of the compressor 111 is connected with the evaporator 112, and the other end is connected with the D port of the three-way valve 116. One end of the evaporator 112 is connected with the outlet of the expansion valve 115, and the other end is connected with the compressor 111. The upper condenser 113 is arranged in the left upper part of the box body. The upper condenser 113 can condense high-temperature steam refrigerant and release heat at the same time, and provide a medium-temperature heat source for the regeneration of the runner and the heating of air. One end of the upper condenser 113 is connected with the C port of the three-way valve 116, and the other end is connected with the expansion valve 115. The lower condenser 114 is arranged below the upper condenser 113 and is installed in the same area. The lower condenser 114 can also condense high-temperature steam refrigerant and release heat at the same time. One end of the lower condenser 114 is connected with the expansion valve 115, and the other end is connected with the E port of the three-way valve 116. The structure of the expansion valve 115 is a valve body straight-through type, which is installed above the evaporator 112. The expansion valve 115 can throttle and reduce pressure, and adjust the supply amount entering the evaporator according to the demand. One end of the expansion valve 115 is connected with the evaporator 112, and the other end is connected with the upper condenser 113 and the lower condenser 114. In this embodiment, the three-way valve 116 adopts an electromagnetic reversing valve body, which is provided with C, D and E ports. The control device is electrically connected with the three-way valve 116, and the control device can control the opening or closing of each joint of the three-way valve 116.

[0086] In this embodiment, the three-way valve 116 switches the flow direction of the refrigerant by power acquisition and loss. When the three-way valve 116 is powered, the D port and the C port of the three-way valve 116 are communicated, and at this time the refrigerant flows to the upper condenser 113. When the three-way valve 116 loses power, the D port and the E port of the three-way valve 116 are communicated, and at this time the refrigerant flows to the lower condenser 114.

[0087] The second group of heat pump circuits includes a compressor 121, an evaporator 122, a condenser 123, a heat dissipation fan 124 and an expansion valve 125. In this embodiment, the condenser 123 is arranged above the left segment of the box body. The top of the left segment of the box body is provided with the heat dissipation fan 124. The bottom of the right segment of the box body is provided with the evaporator 122. The heat dissipation fan 124 is arranged at the top of the condenser 123.

[0088] The second group of heat pump circuits adopts a conventional single-segment refrigeration cycle. The connection mode is that one end of the compressor 121 is connected with the condenser 123, one end of the condenser 123 is connected with the expansion valve 125, one end of the expansion valve 125 is connected with the evaporator 122, and one end of the evaporator 122 is connected with the compressor 121.

[0089] The evaporator 112 and the evaporator 122 are connected in parallel mode on the air duct. The evaporator 112 and the evaporator 122 can be independently or cooperatively started.

[0090] A dehumidification wheel 2 is arranged in the middle of the right section of the cabinet. The dehumidification wheel 2 is divided into two parts, the upper half is the regeneration side, which is communicated with the airflow flowing through the upper layer; the lower half is the adsorption side, which is communicated with the airflow flowing through the lower layer. The dehumidification wheel 2 can absorb the trace amount of moisture in the air flowing through the evaporator one 112 and the evaporator two 122 from the adsorption side, and the regeneration side is regenerated and desorbed by the upper layer condenser one 113; the adsorption side can adsorb the air moisture, and the regeneration side can desorb the moisture adsorbed by the dehumidification wheel.

[0091] In the embodiment, a heat recovery system is arranged in the middle section of the right section of the cabinet. The heat recovery system includes a heat recovery cooler 31, a heat recovery heater 32, and a circulating water pump 33. The heat recovery cooler 31 is arranged in the middle of the right section of the cabinet and located at the left side of the dehumidification wheel 2. The heat recovery heater 32 is arranged at the right side of the dehumidification wheel 2. The circulating water pump 33 is arranged at the top of the middle section of the cabinet.

[0092] The heat recovery cooler 31 can extract the sensible heat of the regeneration wheel outlet air and reduce the dry bulb temperature of the evaporator inlet air. The heat recovery cooler 31 is arranged at the inlet air side of the evaporator one 112 and the evaporator two 122 to ensure the minimum dry bulb temperature. The heat recovery heater 32 can be used to recover the sensible heat of the regeneration wheel outlet air and increase the inlet air temperature of the upper layer condenser, reduce the condensing heat demand of the heat pump system, and thus reduce the operating power consumption of the heat pump system. The circulating water pump 33 can circulate the water medium between the heat recovery cooler 31 and the heat recovery heater 32, and the control device can control the operation of the circulating water pump 33. The outlet air of the dehumidification wheel 2 enters the evaporator one 112 and the evaporator two 122 after passing through the heat recovery cooler 31. The heat recovery cooler 31 can reduce the dry bulb temperature of the air inlet, so that more cold energy is used for latent heat condensation.

[0093] As another embodiment, the heat recovery system adopts a micro-channel structure. Specifically, a two-phase phase change return structure is used. The self-gravity driven micro-channel is composed of a plurality of parallel small flow channels or evaporation-condensation units in structure, and is filled with suitable working medium. The working principle is as follows: the hot end is arranged at the regeneration outlet air of the dehumidification wheel 2 or other high temperature side, and the cold end is arranged at the fresh air to be heated or the inlet air of the upper layer condenser one 113; when the hot end absorbs the sensible heat of the regeneration outlet air, the working medium vaporizes at the hot end and rises to the cold end in vapor state; the vapor condenses at the cold end and releases heat, and then the condensed liquid returns to the hot end under the action of gravity or return channel, completing the closed loop circulation and realizing the transfer and recovery of heat from the hot end to the cold end. This type can rely on height difference and phase change to realize self-circulation (i.e. gravity / thermal siphon driven), and can be used with or assisted by a circulating water pump when needed to meet different heat exchange loads and installation conditions.

[0094] In the embodiment, the water treatment system is arranged at the bottom of the right section of the cabinet and the middle section of the cabinet. The water treatment system comprises a water tank, a water pump 41 and a water storage bucket 42. Inside the water treatment system, a high water level switch 421, a low water level switch 422, a water purifier 423 and a water using device 424 are arranged.

[0095] The water tank is a stainless steel tray with a water collecting pipe at the lower part. The water tank can collect the condensed water of the evaporator 1 12, the evaporator 2 122 and the heat recovery cooler 31. One end of the water tank is connected to the water pump 41. The water pump 41 can deliver water to the water storage bucket 42. Inside the water tank, a high water level switch 431 and a low water level switch 432 are arranged. Both the high water level switch 431 and the low water level switch 432 are float ball switches connected to the control device. The high water level switch 431 and the low water level switch 432 can detect the water in the water tank. When the high water level switch 431 detects that the water tank is full, the water pump 41 is started to deliver water in the water tank to the water storage bucket 42. When the low water level switch 432 detects that there is less water in the water tank, the water pump 41 is stopped.

[0096] In another embodiment, when the water making unit enters the low humidity operation mode, the low humidity air cooling area functions as a secondary water making area. A secondary water tank is arranged below the heat recovery cooler 31. The condensed water collected by the secondary water tank is delivered to the water delivery tank through a pipeline.

[0097] The water storage bucket 42 is a stainless steel water tank with a water outlet. The water storage bucket 42 can store the condensed water before purification. A pipeline is arranged at the bottom of the water storage bucket 42 and connected to the water purifier 423. The purified water can be provided to the water using device 424 outside. Inside the water storage bucket 42, a high water level switch 421 and a low water level switch 422 are arranged. The high water level switch 421 and the low water level switch 422 can detect the water in the water storage bucket 42. The high water level switch 421 and the low water level switch 422 are connected to the control device to control the operation of the devices related to water making, including the air supply fan 72, the heat recovery system and the heat pump system. When the high water level is triggered, the operation of the devices is stopped.

[0098] In the embodiment, the control device comprises a sensor and a controller. The sensor can be a temperature and humidity sensor or a humidity sensor. In the embodiment, the sensor is a temperature and humidity sensor. The temperature and humidity sensor is arranged at the air inlet louver 81. The temperature and humidity sensor can monitor the air state at the air inlet in real time. The controller is connected to the devices. According to the detection signal detected by the temperature and humidity sensor, the controller can drive the start and stop and operation mode control of the devices, including the three-way valve 116, the bypass air duct 5, the electric valve 6, the compressor 1 111, the compressor 2 121, the circulating water pump 33, the water pump 41, the air supply fan 72 and other devices.

[0099] In the embodiment, the control device can start the high-humidity operation mode or the low-humidity operation mode according to a detection signal detected by the temperature and humidity sensor.

[0100] The signal detected by the temperature and humidity sensor includes the dew point and humidity of the incoming air. In the high-humidity operation mode, the water production amount of the air water production is large; and in the low-humidity operation mode, water production can be realized in all working conditions.

[0101] The controller is provided with preset humidity for judging the execution of the high-humidity operation mode and the low-humidity operation mode. When the absolute water content of the air obtained by the temperature and humidity sensor detecting the dew point and humidity of the incoming air is higher than the preset humidity A of the high-humidity operation mode, the high-humidity operation mode is run; and when the absolute water content of the air obtained by the temperature and humidity sensor detecting the dew point and humidity of the incoming air is lower than the preset humidity B of the low-humidity operation mode, the low-humidity operation mode is run. It is particularly emphasized that the preset humidity is adapted to the use environment, and different preset humidity can be set for different environments.

[0102] In this embodiment, the specific preset humidity A is 15 g / kg of moisture content of dry air, and the preset humidity B is 8 g / kg of moisture content of dry air.

[0103] When the humidity of the air is 8 g / kg-15 g / kg of moisture content, and the water production unit is converted from the low-humidity operation mode to the high-humidity operation mode, the channel switching device does not act, and the air continues to enter the low-humidity air inlet channel. Until the humidity of the air is greater than the preset humidity A, the channel switching device acts, the low-humidity air inlet channel is closed, the high-humidity air inlet channel is opened, the air enters the high-humidity air inlet channel, and the water production unit enters the high-humidity operation mode.

[0104] When the humidity of the air is 8 g / kg-15 g / kg of moisture content, and the water production unit is converted from the high-humidity operation mode to the low-humidity operation mode, the channel switching device does not act, and the air continues to enter the high-humidity air inlet channel. Until the humidity of the air is less than the preset humidity B, the channel switching device acts, the high-humidity air inlet channel is closed, the low-humidity air inlet channel is opened, the air enters the low-humidity air inlet channel, and the water production unit enters the low-humidity operation mode.

[0105] When the humidity of the air is 8 g / kg-15 g / kg of moisture content, and the water production unit is started, the controller will give one of the starting operation instructions of the high-humidity operation mode or the low-humidity operation mode.

[0106] In the embodiment, when the temperature and humidity sensor detects that the dew point and humidity of the incoming air meet the condition of the high-humidity operation mode, the water production unit.

[0107] In the high-humidity operation mode:

[0108] The controller controls the three-way valve 116 to be powered off, opens the bypass air duct 5, and sends a start signal to the air blower 72.

[0109] The external air enters the right section of the cabinet from the air inlet louver 81, passes through the air filter 71, which can trap dust and particles at the air inlet, ensuring that the subsequent devices are not affected by dust and particles, and improving water quality.

[0110] In the high-humidity operation mode, the electric air valve 6 is opened, and air can flow from the bypass air duct 5, bypassing the heat recovery heater 32 and the regeneration side of the dehumidification runner 2. The air blower 72 operates to provide stable air volume and drive the air flow into the cabinet. The air enters the evaporator one 112 and the evaporator two 122 in turn, and the refrigerant vaporizes in the evaporator one 112 and the evaporator two 122, respectively, absorbs the latent heat and sensible heat of the air, and reduces the air temperature to below the dew point. In this process, a large amount of water vapor condenses on the surface of the fins of the evaporator one 112 and the evaporator two 122, producing a large amount of condensate, which is concentrated and drips into the water tank below. The water after the water is processed by the air blower 72 to discharge the treated air from the air outlet louver 82.

[0111] The cooling fan 124 is opened, and the cooling fan 124 is installed at the top of the condenser two 123 to assist the condenser two 123 in heat dissipation and ensure stable circulation.

[0112] The condensate from the evaporator one 112 and the evaporator two 122 is collected in the water tank, and when the water level reaches the high-level switch 431, the water pump 41 is started to deliver water to the water storage barrel 42. The condensate in the water storage barrel is filtered by the purifier 423 and sent to the water purification equipment 424 to ensure water quality. The water tank high-level switch 421 is disconnected to prevent overflow.

[0113] In the low-humidity operation mode, the temperature and humidity sensor detects that the air inlet humidity is lower than the preset humidity, the controller determines that it is in the low-humidity operation mode, and powers on the three-way valve 116, closes the bypass air duct 5, and starts the air inlet louver 81 and the air blower 72.

[0114] The external dry air enters the filter 71 through the air inlet louver 81, and the dust is removed to protect the heat recovery system and the dehumidification wheel 2. The air flow then enters the heat recovery heater 32, and the circulating water pump 33 sends the water heat medium recovered by the heat recovery cooler 31 into the heater 32 to heat the air. The preheated air continues to enter the upper condenser 113 to further heat the air flow. The high-temperature air flow after heating enters the regeneration side of the dehumidification wheel 2 and contacts the trace amount of water adsorbed on the wheel body, so that the water is desorbed into the air flow, and the humidity of the air flow is significantly increased and the temperature is slightly reduced. The regeneration air outlet and the initial processing air flow are combined, and the combined air flow flows through the heat recovery cooler 31. At this time, the circulating water pump 33 has returned the water medium after heat release of the heater 32 to the cooler 31, absorbed the sensible heat of the air flow and evaporated, and then sent back to the heat recovery cooler 31 to condense and circulate. The cooled air flow passes through the evaporators 112 and 122 in turn, and the refrigerant absorbs the latent heat of the air flow to condense and precipitate the water vapor desorbed and the remaining water vapor. The cooled air flow passes through the adsorption side of the dehumidification wheel 2 again to capture the extremely small amount of water vapor remaining after evaporation and slightly warm up. The air supply fan 72 discharges the deeply dried air to the environment through the air outlet louver 82; all the condensed water is collected in the water tank and sent to the water storage bucket 42 by the water pump 41, and then supplied after being purified by the water purifier 423.

[0115] In the low-humidity operation mode, the dehumidification wheel 2 can adsorb the trace amount of water vapor that the evaporator cannot condense, and with the help of the medium-temperature regeneration air, the water vapor is desorbed and transferred to the air before the evaporator, so that the evaporator can condense the water vapor, break the ice point limit of the water vapor on the surface of the evaporator, ensure that water can be produced at low dew point, and the inertia of the wheel smooths the air flow fluctuation, so that the water production is more stable, and water can be produced even when the humidity of the incoming air is low.

[0116] In the high-humidity operation mode, the high-humidity air is concentrated in the positions of the evaporator 112 and the evaporator 122, is deeply cooled and dehumidified, and bypasses the extra circuit to avoid air resistance, so that the water production amount is large and the efficiency is high. In the low-humidity operation mode, the dry air is heated, the water is desorbed, and then the air is cooled, two-stage condensed, and re-adsorbed by the wheel, which successfully breaks through the ice point limit and can produce condensed water in a low-dew-point environment.

[0117] In the low humidity operation mode, the temperature of the air out of the wheel regeneration side is significantly higher than the temperature of the fresh air, and there is a large temperature difference between the two, especially when the inlet air temperature is low. To further improve the energy efficiency and water production capacity of the heat pump system, a heat recovery system is provided. On the one hand, the heat recovery cooler 31 is arranged at the inlet air end of the evaporator one 112, and the sensible heat in the air out of the wheel regeneration is absorbed by the heat recovery cooler 31, thereby reducing the dry bulb temperature of the inlet air of the evaporator one 112, so that the heat pump system consumes less sensible heat and converts more cold into latent heat to facilitate dehumidification and water production. The heat recovery heater 32 is arranged at the inlet air end of the upper condenser one 113, and the heat absorbed by the heat recovery cooler 31 is used to heat the fresh air or the regeneration inlet air, thereby increasing the inlet air temperature of the upper condenser one 113 and reducing the demand for the regeneration heat source. The heat recovery cooler 31 and the heat recovery heater 32 are connected by a pipeline, and under the drive of the circulating water pump 33, the working fluid inside circulates between the two; when the air out of the wheel regeneration passes through the heat recovery cooler 31, the working fluid absorbs the heat of the air and reduces the inlet air temperature of the evaporator one 112, and then the heated working fluid is transported to the heat recovery heater 32 through the pipeline and exchanges heat with the inlet air to release heat to the air; the working fluid after heat exchange flows back to the heat recovery cooler 31 and circulates. Through the configuration of the heat recovery system, more cold of the heat pump system can be used for latent heat condensation under the same input power condition, which significantly improves the system energy efficiency and increases the water production capacity.

[0118] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A full-operation air-to-water unit, characterized by: include A high humidity air inlet channel, when the air humidity is higher than a preset humidity A, the air flows into the high humidity air inlet channel, and the water making unit enters a high humidity operation mode; a low-humidity air inlet channel, wherein when the humidity of the air is lower than the preset humidity B, the air flows into the low-humidity air inlet channel, and the water-generating unit enters a low-humidity operation mode; a channel switching device, the channel switching device controlling the air to flow into the high-humidity air inlet channel or the low-humidity air inlet channel according to whether the humidity of the air is higher than the preset humidity A or lower than the preset humidity B; when the humidity of the air is between the preset humidity B and the preset humidity A, the channel switching device does not operate; The water production channel, the high humidity air inlet channel and the low humidity air inlet channel are both connected to the water production channel, and the air flowing out from the high humidity air inlet channel or the low humidity air inlet channel enters the water production channel so that the water production channel produces water.

2. The full-operation air-to-water unit according to claim 1, characterized in that: Also includes A dehumidification wheel, wherein the axis of the dehumidification wheel is arranged parallel to the ground, and is divided into a regeneration side and an adsorption side by a partition along the axis of the dehumidification wheel parallel to the ground, wherein the adsorption side can adsorb moisture in the air, and the regeneration side can desorb the moisture adsorbed by the adsorption side into the air; The regeneration side is located in the low-humidity air inlet channel, and the regeneration side divides the low-humidity air inlet channel into a low-humidity air heating area and a low-humidity air cooling area; The adsorption side is located in the water production channel, and the adsorption side divides the water production channel into a main water production area and a treated air heating area; When the air enters the low-humidity air inlet channel, it first enters the low-humidity air heating zone to be heated, then passes through the regeneration side of the dehumidification wheel to increase the humidity, and finally enters the low-humidity air cooling zone to reduce the temperature before entering the water production channel; The main water production area and the treated air heating area are located in the water production channel. When the air coming out of the high-humidity air inlet channel or the low-humidity air inlet channel enters the water production channel, it first enters the main water production area for water production, and then passes through the adsorption side of the dehumidification wheel to reduce the humidity before being discharged out of the water maker.

3. The full-operation air-to-water unit according to claim 2, characterized in that: Also includes A heat pump system, the heat pump system comprising a first set of heat pump circuits and a second set of heat pump circuits; The first heat pump circuit comprises a compressor, a three-way valve, a lower condenser 1, an upper condenser 1, an expansion valve 1, and an evaporator 1, wherein the outlet of the compressor is connected to the inlet D of the three-way valve, the outlet E of the three-way valve is connected to the inlet of the lower condenser 1, the outlet C of the three-way valve is connected to the inlet of the upper condenser 1, the outlets of the lower condenser 1 and the upper condenser 1 are both connected to the inlet of the expansion valve 1 in a one-way flow manner, the outlet of the expansion valve 1 is connected to the inlet of the evaporator 1, and the outlet of the evaporator 1 is connected to the inlet of the compressor 1; The second heat pump circuit includes a second compressor, a second evaporator, a second expansion valve, a second condenser, and a cooling fan. The outlet of the second compressor is connected to the inlet of the second evaporator, the outlet of the second evaporator is connected to the inlet of the second expansion valve, the outlet of the second expansion valve is connected to the inlet of the second condenser, the outlet of the second condenser is connected to the inlet of the second compressor, and the cooling fan is located next to the second condenser. The upper condenser 1 is located in the low-humidity air heating zone, and the upper condenser 1 can provide the heat source required for regeneration and desorption of the dehumidification wheel; The evaporator 1 and the evaporator 2 are located in the main water production area; The second lower condenser is located in the treated air heating zone.

4. The full-operation air-to-water unit according to claim 3, characterized in that: Also includes A heat recovery system, comprising a circulating water pump, a heat recovery cooler, and a heat recovery heater, wherein the outlet of the circulating water pump is connected to the inlet of the heat recovery cooler, the outlet of the heat recovery cooler is connected to the inlet of the heat recovery heater, and the outlet of the heat recovery heater is connected to the inlet of the circulating water pump; The heat recovery heater is located in the low-humidity air heating zone; The heat recovery cooler is located in the low-humidity air cooling zone.

5. The full-operation air-to-water unit according to claim 3, characterized in that: When the air flows into the low-humidity air inlet channel, the air passes through the heat recovery heater, the upper condenser 1, the upper half of the dehumidification wheel, the heat recovery cooler, and then comes out of the low-humidity air inlet channel and enters the water production channel; When the air flows into the high-humidity air inlet channel, the air simply passes through the high-humidity air inlet channel without undergoing any treatment, and then enters the water production channel after exiting the high-humidity air inlet channel; When the air enters the water production channel, the air passes through the first evaporator, the second evaporator, the lower half of the dehumidification wheel, and the first lower condenser in sequence.

6. The full-operation air-to-water unit according to any one of claims 1 to 5, characterized in that: Also includes The water treatment system includes a water treatment system, a water tank, a water pump 41, and a water storage tank 42. The water tank is used to collect water generated by the water maker. The water tank is connected to the water storage tank. The water pump is set in the water tank and transports the water in the water tank to the water storage tank.

7. The full-operation air-to-water unit according to claim 6, characterized in that: The water treatment system also includes a water tank high level switch, a water tank low level switch, a water purifier, water purification equipment, a water tank high level switch, a water tank low level switch, The water tank high level switch and the water tank low level switch are arranged in the water tank, and the water storage bucket high level switch and the water storage bucket low level switch are arranged in the water storage bucket. The water coming out of the water storage bucket is first processed by the water purifier and then enters the water purification device; Feedback information from the water tank high liquid level switch and the water tank low liquid level switch can control the start and stop of the water pump; The feedback information of the water tank high-level switch and the water tank low-level switch can control the start and stop of the water making unit.

8. The full-operation air-to-water unit according to any one of claims 6-7, characterized in that: Also included is a control system, which includes a sensor and a controller; The sensor is arranged at the air inlet of the water making unit, and the sensor is capable of detecting the humidity of the air passing through the air inlet and feeding back the humidity to the controller; The controller issues an operation instruction according to the humidity condition to control the operation of the water making unit.

9. The full-operation air-to-water unit according to claim 8, characterized in that: The operation instructions include The start and stop of the channel switching device, the switching of the outlet C and the outlet E of the three-way valve, the start and stop of the circulating water pump, the start and stop of the compressor 1, and the start and stop of the compressor 2.

10. The full-operation air-to-water unit according to any one of claims 1 to 9, characterized in that: When the water making unit enters the high humidity operation mode, the controller sends an instruction to control the channel switching device to open, and the air sequentially enters the high humidity air inlet channel and the water making channel, and then is discharged from the water making unit; The controller issues an instruction to control the circulating water pump to shut down, so that the heat recovery system stops running; The controller sends an instruction to control the outlet C of the three-way valve to open and switch to outlet E to open. At this time, the lower condenser enters the first group of heat pump circuits and the upper condenser exits the first group of heat pump circuits.

11. The full-operation air-to-water unit according to claim 10, characterized in that: When the water-generating unit enters the high-humidity operation mode, the flow path of the refrigerant in the first heat pump circuit is as follows: the liquid refrigerant temporarily absorbs heat from the air through the evaporator 1 and becomes a high-temperature gaseous refrigerant; the high-temperature gaseous refrigerant sequentially passes through the compressor 1 and the outlet E of the three-way valve and then enters the lower condenser 1; the high-temperature gaseous refrigerant temporarily releases heat to the air through the lower condenser 1 and becomes a liquid refrigerant; the liquid refrigerant flows into the closed loop path of the evaporator 1 after passing through the expansion valve 1; The refrigerant in the second heat pump circuit has a flow path in which the liquid refrigerant absorbs heat from the air when passing through the second evaporator and becomes a high-temperature gaseous refrigerant. The high-temperature gaseous refrigerant passes through the second compressor and then enters the second condenser. The high-temperature gaseous refrigerant releases heat to the air when passing through the second condenser and becomes a liquid refrigerant. The liquid refrigerant flows into the closed loop of the second evaporator after passing through the second expansion valve. The air is blown to the main water production area, the adsorption side of the dehumidification wheel, and the treated air heating area in the water production channel in sequence. In the main water production area, the air is first blown to the evaporator 1 and then blown to the evaporator 2 to absorb heat twice. The moisture in the air is precipitated twice in the evaporator 1 and the evaporator 2. The air coming out of the main water production area is blown to the adsorption side of the dehumidification wheel, and the moisture in the air is absorbed by the adsorption side of the dehumidification wheel; the air coming out of the adsorption side of the dehumidification wheel is blown to the lower condenser 1 to release heat. The air takes away the heat released by the lower condenser 1 and is discharged from the water production unit.

12. The full-operation air-to-water unit according to any one of claims 1 to 9, characterized in that: When the water making unit enters the low-humidity operation mode, the controller issues an instruction to control the channel switching device to close, and the air sequentially enters the low-humidity air inlet channel and the water making channel, and then is discharged from the water making unit; The controller issues an instruction to control the circulating water pump to start, so that the heat recovery system starts to operate; The controller sends an instruction to control the outlet E of the three-way valve to open and switch to the outlet C to open. At this time, the lower condenser 1 exits the first group of heat pump circuits and the upper condenser 1 enters the first group of heat pump circuits.

13. The full-operation air-to-water unit according to claim 12, characterized in that: When the water-generating unit enters the low-humidity operation mode, the flow path of the refrigerant in the first heat pump circuit is as follows: the liquid refrigerant absorbs heat from the air while passing through the evaporator 1 and becomes a high-temperature gaseous refrigerant; the high-temperature gaseous refrigerant passes through the compressor 1 and the outlet C of the three-way valve in sequence and then enters the upper condenser 1; the high-temperature gaseous refrigerant releases heat to the air while passing through the upper condenser 1 and becomes a liquid refrigerant; the liquid refrigerant flows into the closed loop path of the evaporator 1 after passing through the expansion valve 1; The refrigerant in the second heat pump circuit has a flow path in which the liquid refrigerant absorbs heat from the air when passing through the second evaporator and becomes a high-temperature gaseous refrigerant. The high-temperature gaseous refrigerant passes through the second compressor and then enters the second condenser. The high-temperature gaseous refrigerant releases heat to the air when passing through the second condenser and becomes a liquid refrigerant. The liquid refrigerant flows into the closed loop of the second evaporator after passing through the second expansion valve. The flow path of the water medium in the heat recovery system is as follows: the water medium flows into the heat recovery cooler and becomes a high-temperature water medium. The high-temperature water medium removes the heat absorbed from the air by the heat recovery cooler. The high-temperature water medium enters the heat recovery heater and transfers the heat to the heat recovery heater and becomes a low-temperature water medium. The heat recovery heater transfers the heat to the air. The water medium enters the closed loop path of the heat recovery cooler after entering the circulating water pump; The air entering the low-humidity channel is first blown to the heat recovery heater for the first heating, and then blown to the upper condenser for the second heating. The air heated twice is blown to the regeneration side of the dehumidification wheel to take away the moisture in the regeneration side to increase the humidity of the air. The air coming out of the regeneration side of the dehumidification wheel is blown to the heat recovery cooler for sensible heat cooling. The air passing through the heat recovery cooler enters the water making channel; the air is blown to the main water making area, the adsorption side of the dehumidification wheel, the treatment area in turn in the water making channel. In the post-treatment air heating zone, the air is first blown to the evaporator 1 and then blown to the evaporator 2 in the main water production zone, and absorbs heat twice. The moisture in the air is precipitated twice in the evaporator 1 and the evaporator 2. The air coming out of the main water production zone is blown to the adsorption side of the dehumidification wheel, and the moisture in the air is absorbed by the adsorption side of the dehumidification wheel; the air coming out of the adsorption side of the dehumidification wheel is blown to the lower condenser 1. At this time, the lower condenser 1 is not in working state, and the air is not discharged outside the water production unit by heat exchange.

14. The full-operation air-to-water unit according to any one of claims 1 to 13, characterized in that: The water tank is provided in the main water production area and is arranged below the first evaporator and the second evaporator.

15. The full-operation air-to-water unit according to claim 14, characterized in that: When the water-making unit enters the low-humidity operation mode, the low-humidity air cooling zone acts as a secondary water-making zone; a secondary water tank is provided in the low-humidity air cooling zone, and the secondary water tank is provided below the heat recovery cooler; the condensed water collected in the secondary water tank is transported to the water tank through a pipeline.

16. The full-operation air-to-water unit according to any one of claims 1 to 15, characterized in that: The high-humidity air inlet channel is arranged outside the box of the water making unit, or is arranged inside the box of the water making unit.

17. The full-operation air-to-water unit according to any one of claims 1 to 16, characterized in that: The preset humidity A is a moisture content of 15 g / kg dry air, and the preset humidity B is a moisture content of 8 g / kg dry air.

18. The full-operation air-to-water unit according to claim 17, characterized in that: When the humidity of the air is 8g / kg-15g / kg and the water-generating unit switches from the low-humidity operation mode to the high-humidity operation mode, the channel switching device does not operate, and the air continues to enter the low-humidity air inlet channel. Until the humidity of the air is greater than the preset humidity A, the channel switching device operates, the low-humidity air inlet channel is closed, the high-humidity air inlet channel is opened, air enters the high-humidity air inlet channel, and the water-generating unit enters the high-humidity operation mode; When the humidity of the air is 8g / kg-15g / kg and the water-generating unit switches from the high-humidity operation mode to the low-humidity operation mode, the channel switching device does not operate, and the air continues to enter the high-humidity air inlet channel. Until the humidity of the air is less than the preset humidity B, the channel switching device operates, the high-humidity air inlet channel is closed, the low-humidity air inlet channel is opened, air enters the low-humidity air inlet channel, and the water-generating unit enters the low-humidity operation mode; When the humidity of the air is 8g / kg-15g / kg and the water making unit is started, the controller will give an operation instruction to start one of the high humidity operation mode or the low humidity operation mode.

19. The full-operation air-to-water unit according to claim 17, characterized in that: The high-humidity air inlet channel is specifically configured as a bypass air duct arranged outside the box of the water making unit.

20. The full-operation air-to-water unit according to any one of claims 1 to 19, characterized in that: The channel switching device is specifically configured as an electric air valve.

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