Air-water making device with wide temperature range

Abstract

The present invention discloses a wide temperature range air water making device, including a compressor, a condenser, an economizer, an adsorbent material, an electric heating device, a throttling element, a water receiving tray, an evaporator, an air heat exchanger, an air filter unit, an air supply fan, a condensing fan, an external water tank, a water purification unit, a water pump, a water collecting tank, pipelines and air ducts and a maintenance structure, etc., respectively forming a refrigeration cycle system, a water treatment system and an air circulation system, and having two functional modes of a fresh air mode and an internal circulation mode. The present invention adopts a system design that couples the principle of condensation and desorption of air, extracts water from the air twice, greatly improves the water output rate, and the applicable temperature range can be expanded to 5°C to 46°C, and the relative humidity range can be applied to 10% to 100%; the air heat exchanger precooling and economizer overcooling dual cooling recovery are adopted to greatly reduce the power of the air water making device and achieve significant energy saving effect; the system is highly integrated, and the device can be lightweight and miniaturized.

Description

Technical Field

[0001] The invention relates to the field of air conditioning devices, in particular to a wide temperature range air water making device. Background Art

[0002] The condensation method of water production is to reduce the temperature of wet air to below the dew point temperature by the evaporator in the steam compression refrigeration system, so that the water vapor in it condenses to obtain liquid water. The adsorption method of water production uses the difference between the water vapor pressure in the ambient air and the water vapor pressure on the surface of the adsorbent as the hygroscopic power, and then uses external heat to increase the water vapor pressure on the surface of the adsorbent for desorption and regeneration, and condenses water vapor to obtain fresh water during desorption.

[0003] The shortcomings of the air-to-water device based on the principle of condensation are: ① the heat exchange speed is slow, the heat exchange efficiency is low, and the water output rate is low; ② the air volume and cooling capacity cannot be adjusted, and cannot adapt to changes in environmental conditions. It is only applicable to 15℃~35℃, and the applicable temperature range is small; ③ when the ambient temperature is low, the evaporator surface is frosted and water cannot be discharged; ④ the device is large in size, the power required for operation is large, the operating cost is high, the system energy efficiency ratio is low and it is not easy to operate.

[0004] The shortcomings of air-to-water devices based on the adsorption-desorption principle are as follows: ① A large amount of heat is required in the process of adsorbent desorption; ② The adsorption / desorption process lasts for a long time, and the water output rate is low; ③ The applicable temperature range is small, and it is not suitable for harsh environmental conditions. The relative humidity of the applicable environment must be greater than 35%.

[0005] In addition, the noise of air-to-water devices has also attracted much attention. The operation of compressors, fans and pumps will generate noise. The use of small-displacement variable-frequency compressors and stepless speed-adjustable fans can achieve low-noise operation of the product. Summary of the invention The purpose of the present invention is to solve the deficiencies of the prior art and to provide an air-to-water device suitable for a wide temperature range.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A wide temperature range air water making device, characterized in that it includes a refrigeration cycle system consisting of a compressor, a condenser equipped with a condensing fan, an economizer, a throttling element, and an evaporator, as well as an air heat exchanger, a wind chamber, an air valve, and a water treatment system. The surface of the economizer in the refrigeration cycle is coated with an adsorption material and integrated with an electric heating device. The economizer, the air heat exchanger, and the evaporator are respectively arranged inside the wind chamber, and the air heat exchanger has a horizontal channel and a vertical channel inside. The wind chamber has an air inlet duct and an air outlet duct. An air supply fan is arranged inside the air inlet duct. The air inlet side of the air inlet duct is connected to an external circulation The air outlet side of the air inlet duct is only connected to the air inlet side of the horizontal channel of the air heat exchanger, the air outlet side of the horizontal channel of the air heat exchanger is only connected to the air inlet side of the evaporator, the air outlet side of the evaporator and the air inlet side of the vertical channel of the air heat exchanger are respectively connected to the same area inside the air chamber, the air outlet side of the vertical channel of the air heat exchanger is only connected to the air inlet side of the economizer, the air outlet side of the economizer is only connected to the air inlet side of the air outlet duct in the air chamber, the air outlet side of the air outlet duct in the air chamber is only connected to the air inlet side of the air valve, and the air outlet side of the air valve can be switched to connect to the air inlet duct in the air chamber and the external environment, thereby forming an air circulation system;

[0008] In the air circulation system, the air from the external environment is first sent into the horizontal channel of the air heat exchanger through the air supply fan in the air inlet duct, and then enters the vertical channel of the air heat exchanger after passing through the evaporator and the inner area of ​​the air chamber, and then enters the air inlet side of the air valve through the air outlet duct after passing through the economizer. When the air outlet side of the air valve is connected to the external environment, it works in the fresh air mode, and when the air outlet side of the air valve is connected to the air inlet duct, it works in the internal circulation mode;

[0009] At the same time, in the refrigeration cycle system, the refrigerant in the compressor passes through the condenser, economizer, throttling element, and evaporator in sequence and then returns to the compressor. The adsorbent material coated by the economizer absorbs moisture in the air, and the electric heating device integrated in the economizer provides the energy required for desorption for the adsorbent material.

[0010] The water treatment system comprises a water receiving pan, which is arranged in the wind chamber and receives the water condensed on the surface of the evaporator and the air heat exchanger at the same time.

[0011] The wide temperature range air water making device is characterized in that: in the refrigeration cycle system, the refrigerant outlet of the compressor is connected to the condenser, economizer, throttling element, evaporator, and the refrigerant return port of the compressor in sequence through a pipeline, thereby forming a refrigerant circulation loop.

[0012] The wide temperature range air water making device is characterized in that: in the economizer, the adsorption material is coated on the economizer heat exchange fins, the electric heating device is embedded in the economizer, and the external PID combined with the thyristor performs stepless adjustment on the heating amount of the electric heating device.

[0013] The wide temperature range air water making device is characterized in that: the air valve is realized by a controllable three-way valve, the inlet of the three-way valve serves as the air inlet side and always remains connected only to the air outlet side of the air outlet duct in the air chamber, one outlet of the three-way valve is connected to the inside of the air inlet duct in the air chamber, and the other outlet of the three-way valve is connected to the external environment, and the inlet is switched to connect the two outlets by controlling the internal valve core of the three-way valve.

[0014] The wide temperature range air water making device is characterized in that: the water treatment system also includes an external water tank, a water purification unit, a water pump, and a water collecting tank. The water receiving tray is connected to the inside of the water collecting tank through a pipeline, the water inlet of the water pump is connected to the inside of the water collecting tank through a pipeline, the water outlet of the water pump is connected to the water inlet of the water purification unit through a pipeline, and the water outlet of the water purification unit is connected to the external water tank through a pipeline.

[0015] The wide temperature range air water making device is characterized in that: the water collecting tank is provided with a water level detection device, and the volume is designed according to demand. When the water level reaches the set value, the water pump is turned on to send the water collected in the water collecting tank to the water purification unit through the water pump for water quality treatment and then stored in an external water tank.

[0016] The wide temperature range air water making device is characterized in that an air filter unit is also provided in the air inlet duct of the air chamber.

[0017] In the present invention, the economizer is a heat exchanger integrated with an adsorbent material and an electric heating device. The adsorbent material with high-efficiency water absorption capacity is coated on the heat exchange fins of the economizer, and the economizer performs secondary recovery of the cold air on the outlet side of the vertical channel of the air heat exchanger; the adsorbent material performs secondary absorption of the residual moisture in the air after the water treatment of the evaporator. The electric heating device is embedded in the economizer, and the heating amount is steplessly adjusted through PID combined with thyristor to provide the best heat for defrosting the evaporator surface and analyzing the adsorbent material under low temperature conditions. The economizer can use a finned heat exchanger, but it does not rule out the economizer being replaced by a finless coil.

[0018] In the present invention, the air heat exchanger is a dual-channel structure perpendicular to each other, and is a cooling recovery device in the system. The air inlet side of the horizontal channel of the air heat exchanger is connected to the air outlet side of the air inlet duct, and the air outlet side of the horizontal channel is connected to the air inlet side of the evaporator, and the air to be treated is sent to the evaporator after precooling; the air inlet side of the vertical air duct of the air heat exchanger and the air outlet side of the evaporator are connected to the same area in the air chamber, and the air outlet side of the vertical air duct of the air heat exchanger is connected to the air inlet side of the economizer, and the two perform heat exchange in the air heat exchanger to realize the recovery of the cooling capacity of the system, and when there is condensed water in the horizontal channel, it can flow into the water receiving tray.

[0019] When the present invention works in the fresh air mode, the air outlet side of the air valve is connected to the external environment, and the refrigerant in the refrigeration cycle system enters the evaporator through the compressor, condenser, economizer, and throttling element, and returns to the compressor after cooling the input fresh air. The water treatment system collects the water condensed from the evaporator and the air heat exchanger through the water receiving tray and then connects it to the water collection tank. When necessary, the water is sent to the water purification unit through the water pump for treatment and output to the external water tank for storage. The air circulation system inhales ambient air through the air supply fan, and the impurities in the air are filtered by the air filter unit and sent to the horizontal channel of the air heat exchanger. After the evaporator condenses and makes water, the low-temperature air enters the vertical channel of the air heat exchanger, and heat exchanges with the air of the ambient temperature in the horizontal channel. After completing the primary recovery of the cold, it enters the economizer. In the economizer, the residual moisture in the air is further absorbed by the adsorption material, and at the same time, heat exchanges with the high-temperature refrigerant in the economizer tube, providing supercooling for the refrigerant in the tube, completing the secondary recovery of the system cold, and then the air is discharged to the external environment.

[0020] When the present invention works in the internal circulation mode, the air outlet side of the air valve is connected to the air inlet duct of the air chamber, the refrigeration cycle system and the water treatment system work, and the electric heating device is started to provide the adsorption material with the energy required for desorption. The moisture in the adsorption material is desorbed into the internal circulation air, and the formed high-temperature and high-humidity air is sent to the evaporator through the air supply fan and the horizontal channel of the air heat exchanger. After the evaporator condenses and produces water, the low-temperature air enters the vertical channel of the air heat exchanger, exchanges heat with the air of ambient temperature in the horizontal channel, completes the primary recovery of cold energy, and returns to the economizer, and the cycle is repeated until the moisture in the adsorption material is completely desorbed.

[0021] The present invention can switch between the fresh air mode and the internal circulation mode by adjusting the air valve based on different environmental conditions through the air valve; the present invention can adopt a variable frequency compressor, a stepless speed regulation fan, an opening adjustable flow element and a stepless adjustable electric heating device, and can realize precise control of the device and optimal matching of system parameters under a wide range of ambient temperature conditions; the present invention adopts a modular design, and can realize many functions such as air water production, air dehumidification and air temperature regulation according to needs, thereby realizing multifunctionality.

[0022] Beneficial effects of the present invention:

[0023] 1. The present invention adopts a water-making system that couples the principle of condensation and adsorption and desorption. It has two working modes: fresh air mode and internal circulation mode. The internal circulation mode can be used to compensate for the water production of the fresh air mode, effectively improving the water production rate and air utilization rate. At the same time, it can be used to melt the frost layer that appears on the surface of the evaporator under conditions of low ambient temperature without destroying the temperature field on the surface of the evaporator, and recovering the water lost during defrosting. It can also be used to solve the problem of low water output rate under high temperature and low humidity conditions, greatly reducing the power consumption of the system. The applicable temperature range of the device can be expanded to 5°C ~ 46°C, and the relative humidity range can be applicable to 10% ~ 100%;

[0024] 2. The present invention adopts dual cooling capacity recovery of air heat exchanger precooling and economizer overcooling, which greatly reduces the power of air water making device and has significant energy saving effect;

[0025] 3. The present invention adopts a multifunctional modular design, each module can be split and operated independently, and can be extended to the fields of dehumidification and air conditioning.

[0026] 4. The system of the present invention is highly integrated, which can achieve lightweight and miniaturization of the device.

[0027] 5. The present invention adopts a variable frequency compressor, a stepless speed fan, an adjustable opening flow element and a stepless electric heating device, which can realize precise control of the device and optimal matching of system parameters, and effectively improve system efficiency.

[0028] 6. The technology of the present invention is mature and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural principle diagram of the system of the present invention when working in the fresh air mode.

[0030] Figure 2 This is a structural principle diagram of the system of the present invention when it works in the internal circulation mode.

[0031] Numbers in the figure: 1- compressor, 2- condenser, 3- economizer, 4- adsorption material, 5- electric heating device, 6- throttling element, 7- water tray, 8- evaporator, 9- air heat exchanger, 10- air supply fan, 11- air filter unit, 12- air valve, 13- condensing fan, 14- external water tank, 15- water purification unit, 16- water pump, 17- water collecting tank. DETAILED DESCRIPTION

[0032] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0033] like Figure 1 , Figure 2 As shown, Figure 1 , Figure 2The invention discloses a wide temperature range air water making device, comprising a refrigeration cycle system consisting of a compressor 1, a condenser 2 equipped with a condensing fan 13, an economizer 3, a throttling element 6, an evaporator 8, an air heat exchanger 9, an air chamber, an air valve 12, and a water treatment system.

[0034] In the refrigeration cycle system, the refrigerant outlet of the compressor 1 is connected to the inlet end of the condenser 2 through a pipeline, the outlet end of the condenser 2 is connected to the inlet end of the economizer 3 through a pipeline, the outlet end of the economizer 3 is connected to the inlet end of the throttling element 6 through a pipeline, the outlet end of the throttling element 6 is connected to the inlet end of the evaporator 8 through a pipeline, and the outlet end of the evaporator 8 is connected to the refrigerant return port of the compressor 1 through a pipeline, thereby forming a refrigerant circulation loop.

[0035] In the economizer 3, the adsorption material 4 is coated on the heat exchange fins of the economizer 3, and the electric heating device 5 is embedded in the economizer 3. The heating amount of the electric heating device 5 is steplessly adjusted by an external PID combined with a thyristor.

[0036] The economizer 3, the air heat exchanger 9, and the evaporator 8 are respectively arranged inside the air chamber. The air heat exchanger 9 has a horizontal channel and a vertical channel inside. The air chamber has an air inlet duct and an air outlet duct. The air inlet duct is provided with an air filter unit 11 and an air supply fan 10 in sequence according to the air inlet direction. The air inlet side of the air inlet duct is connected to the external environment, and the air outlet side of the air inlet duct is only connected to the air inlet side of the horizontal channel of the air heat exchanger 9. The air outlet side of the horizontal channel of the air heat exchanger 9 is only connected to the evaporator 8. The air inlet side of the air chamber is connected, the air outlet side of the evaporator 8 and the air inlet side of the vertical channel of the air heat exchanger 9 are respectively connected with the same area inside the air chamber, the air outlet side of the vertical channel of the air heat exchanger 9 is only connected with the air inlet side of the economizer 3, the air outlet side of the economizer 3 is only connected with the air inlet side of the air outlet duct in the air chamber, the air outlet side of the air outlet duct in the air chamber is only connected with the air inlet side of the air valve 12, and the air outlet side of the air valve 12 can be switched to connect to the air inlet duct in the air chamber and the external environment, thereby forming an air circulation system.

[0037] The air valve 12 is realized by a controllable three-way valve. The inlet of the three-way valve serves as the air inlet side and always remains connected only to the air outlet side of the air outlet duct in the air chamber. One outlet of the three-way valve is connected to the inside of the air inlet duct in the air chamber, and the other outlet of the three-way valve is connected to the external environment. The inlet is switched to connect the two outlets by controlling the internal valve core of the three-way valve.

[0038] In the air circulation system, the air from the external environment is first sent into the horizontal channel of the air heat exchanger 9 through the air supply fan 10 in the air inlet duct, and then enters the vertical channel of the air heat exchanger 9 after passing through the evaporator 8 and the inner area of ​​the air chamber in sequence, and then enters the air inlet side of the air valve 12 through the air outlet duct after passing through the economizer 3. When the air outlet side of the air valve 12 is connected to the external environment, it works in the fresh air mode, and when the air outlet side of the air valve 12 is connected to the air inlet duct, it works in the internal circulation mode.

[0039] At the same time, in the refrigeration cycle system, the refrigerant in the compressor 1 passes through the condenser 2, the economizer 3, the throttling element 6, and the evaporator 8 in sequence and then returns to the compressor 1. The adsorption material 4 coated with the economizer 3 absorbs moisture in the air, and the electric heating device 5 integrated in the economizer 3 provides the adsorption material 4 with the energy required for desorption.

[0040] The water treatment system includes a water receiving tray 7, an external water tank 14, a water purification unit 15, a water pump 16, and a water collecting tank 17. The water receiving tray 7 is arranged in the wind chamber and receives the water condensed on the surface of the evaporator 8 and the air heat exchanger 9 at the same time. The water receiving tray 7 is connected to the inside of the water collecting tank 17 through a pipeline, the water inlet of the water pump 16 is connected to the inside of the water collecting tank 17 through a pipeline, the water outlet of the water pump 16 is connected to the water inlet of the water purification unit 15 through a pipeline, and the water outlet of the water purification unit 15 is connected to the external water tank 14 through a pipeline. The water collecting tank 17 is provided with a water level detection device, and the volume is designed according to the demand. When the water level reaches the set value, the water pump 16 is turned on to send the water collected in the water collecting tank 17 to the water purification unit 15 through the water pump 16 for water quality treatment and then stored in the external water tank 14.

[0041] The present invention has two functional modes: a fresh air mode and an internal circulation mode.

[0042] like Figure 1This is the principle diagram of the fresh air mode. The air valve 12 is open. The refrigerant in the refrigeration cycle system forms high-temperature and high-pressure refrigerant vapor through the compressor 1, releases part of the heat through the condenser 2, and further releases latent heat in the economizer 3 to form a low-temperature and high-pressure liquid refrigerant with a certain degree of supercooling. After throttling and depressurization by the throttling element 6, it becomes a low-temperature and low-pressure liquid refrigerant, which is sent to the evaporator 8 to cool the air outside the tube. The refrigerant in the tube absorbs heat and evaporates to form refrigerant vapor and returns to the compressor 1. The air circulation system inhales ambient air through the air supply fan 10, and is sent to the horizontal channel of the air heat exchanger 9 after filtering impurities in the air through the air filter unit 11. After the evaporator 8 condenses and makes water, the low-temperature air enters the vertical channel of the air heat exchanger 9, and exchanges heat with the air of the ambient temperature in the horizontal channel. After completing the primary recovery of cold, it enters the economizer 3. In the economizer 3, the residual moisture in the air is further absorbed by the adsorption material 4, and at the same time, it exchanges heat with the high-temperature refrigerant in the tube of the economizer 3, providing the refrigerant in the tube with supercooling and the cold required for condensation, completing the secondary recovery of the system cold, and then the air is discharged. The water treatment system collects the water condensed from the evaporator 8 and the air heat exchanger 9 through the water receiving tray 7 and then connects it to the water collecting tank 17. When necessary, the water is sent to the water purification unit 15 through the water pump 16 for treatment and output to the external water tank 14 for storage.

[0043] like Figure 2 In the internal circulation mode, the air valve 12 is closed, the refrigeration cycle system and the water treatment system are working, and the electric heating device 5 is started to provide the energy required for desorption of the adsorbent material 4. The moisture in the adsorbent material 4 is desorbed into the internal circulation air, and the high-temperature and high-humidity air formed is sent to the evaporator 8 through the air supply fan 10 and the horizontal channel of the air heat exchanger 9. After the evaporator 8 condenses and produces water, the low-temperature air enters the vertical channel of the air heat exchanger 9, and exchanges heat with the air of the ambient temperature in the horizontal channel. After completing the primary recovery of the cold, it returns to the economizer 3, and the cycle is repeated until the moisture in the adsorbent material 4 is completely desorbed. The internal circulation mode can be used to compensate for the water production of the fresh air mode, effectively improving the water production rate and air utilization rate. Under low temperature conditions, the internal circulation mode can be used to melt the frost layer on the surface of the evaporator 8 without destroying the temperature field on the surface of the evaporator 8, and recover the moisture lost during defrosting. It can also be used to solve the problem of low water output rate under high temperature and low humidity conditions, greatly reducing system power consumption.

[0044] The above-described embodiments are only preferred embodiments of the present invention, but the present invention is not limited to the above-described embodiments. For a person skilled in the art, any obvious changes made thereto without departing from the principle of the present invention are within the concept of the present invention and the protection scope of the appended claims.

Claims

1. A wide temperature range air water making device, characterized in that: The invention comprises a refrigeration cycle system consisting of a compressor, a condenser equipped with a condensing fan, an economizer, a throttling element, an evaporator, an air heat exchanger, a wind chamber, an air valve, and a water treatment system. The surface of the economizer in the refrigeration cycle system is coated with an adsorption material and integrated with an electric heating device. The economizer, the air heat exchanger, and the evaporator are respectively arranged inside the wind chamber. The air heat exchanger has a horizontal channel and a vertical channel inside. The wind chamber has an air inlet duct and an air outlet duct. An air supply fan is arranged inside the air inlet duct. The air inlet side of the air inlet duct is connected to the external environment. The air outlet side of the air inlet duct is only connected to the air inlet side of the horizontal channel of the air heat exchanger. The air outlet side of the horizontal channel of the air heat exchanger is only connected to the air inlet side of the evaporator. The air outlet side of the evaporator and the air inlet side of the vertical channel of the air heat exchanger are respectively connected to the same area inside the wind chamber. The air outlet side of the vertical channel of the air heat exchanger is only connected to the air inlet side of the economizer. The air outlet side of the economizer is only connected to the air inlet side of the air outlet duct in the wind chamber. The air outlet side of the air duct is only connected to the air inlet side of the air valve, and the air outlet side of the air valve can be switched to connect the air inlet duct in the ventilation chamber and the external environment, thereby forming an air circulation system; in the air circulation system, the air from the external environment is first sent into the horizontal channel of the air heat exchanger through the air supply fan in the air inlet duct, and then enters the vertical channel of the air heat exchanger after passing through the evaporator and the internal area of ​​the air chamber in sequence, and then enters the air inlet side of the air valve through the air outlet duct after passing through the economizer. When the air outlet side of the air valve is connected to the external environment, it works in the fresh air mode, and when the air outlet side of the air valve is connected to the air inlet duct, it works in the internal circulation mode; at the same time, in the refrigeration cycle system, the refrigerant in the compressor passes through the condenser, the economizer, the throttling element, and the evaporator in sequence and then returns to the compressor, the adsorption material coated by the economizer absorbs moisture in the air, and the electric heating device integrated in the economizer provides the energy required for desorption for the adsorption material; the water treatment system includes a water receiving tray, which is arranged in the air chamber and simultaneously receives moisture condensed on the surface of the evaporator and the air heat exchanger; In the economizer, the adsorption material is coated on the heat exchange fins of the economizer, the electric heating device is embedded in the economizer, and the heating amount of the electric heating device is steplessly adjusted by an external PID combined with a thyristor; The air valve is realized by a controllable three-way valve. The inlet of the three-way valve serves as the air inlet side and always remains connected only to the air outlet side of the air outlet duct in the air chamber. One outlet of the three-way valve is connected to the inside of the air inlet duct in the air chamber, and the other outlet of the three-way valve is connected to the external environment. The inlet is switched to connect the two outlets by controlling the internal valve core of the three-way valve.

2. The wide temperature range air water making device according to claim 1, characterized in that: In the refrigeration cycle system, the refrigerant outlet of the compressor is connected to the condenser, economizer, throttling element, evaporator and refrigerant return port of the compressor in sequence through pipelines, thereby forming a refrigerant circulation loop.

3. The wide temperature range air water making device according to claim 1, characterized in that: The water treatment system also includes an external water tank, a water purification unit, a water pump, and a water collecting tank. The water receiving tray is connected to the inside of the water collecting tank through a pipeline, the water inlet of the water pump is connected to the inside of the water collecting tank through a pipeline, the water outlet of the water pump is connected to the water inlet of the water purification unit through a pipeline, and the water outlet of the water purification unit is connected to the external water tank through a pipeline.

4. The wide temperature range air water making device according to claim 3, characterized in that: The water collecting tank is provided with a water level detection device, and the volume is designed according to demand. When the water level reaches the set value, the water pump is turned on to pump the water collected in the water collecting tank to the water purification unit for water quality treatment and then stored in the external water tank.

5. The wide temperature range air water making device according to claim 1, characterized in that: An air filter unit is also arranged in the air inlet duct of the air chamber.

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