Photovoltaic direct-driven semiconductor refrigeration air conditioner

Abstract

The utility model relates to a photovoltaic direct-driven semiconductor refrigeration air conditioner. The system comprises an air inlet fan, a temperature and humidity sensing module, a pneumatic pipe, a fin, a heat exchange pipe, a water pump, a porous circular plate, a refrigeration sheet, a water cooling head, a three-way valve, an electric control valve, a solar panel, a steering engine, a holder, a photoresistor, a control system, a water storage tank, an air inlet, an air outlet, a water outlet, a water supply pipe, an air return pipe, an air return inlet, an air outlet, a water spray pipe, a water inlet and a circulating water outlet. The air inlet pipe and the air outlet pipe are communicated with each other. According to the utility model, the photovoltaic technology, the semiconductor chilling plate technology and the dew-point indirect evaporative cooling technology are combined, primary energy is converted into secondary energy for refrigeration, a device control system is integrated, and the environment adaptability is high. Target refrigeration can be achieved in different high-temperature environments.

Description

Technical Field

[0001] The utility model belongs to the field of refrigeration equipment and new energy, and relates to a cooler for photovoltaic power generation and reducing the air supply temperature to the dew point temperature. The cooler has strong environmental adaptability and can achieve stable air supply and photovoltaic power generation in high-temperature environments. Background Art

[0002] The cooling effect of existing compressor refrigeration air conditioners is affected by the high temperature of the environment when encountering high temperature weather. At the same time, the cooling effect of existing dew point indirect evaporative coolers is actually affected by the environment and cannot achieve the theoretical goal of reducing the air to the dew point temperature.

[0003] In rural areas, most self-built houses have large roofs and are exposed to sunlight for a long time, so the cooling demand is smaller than that in cities.

[0004] Dew-point indirect evaporative cooling technology relies primarily on the heat absorption of water through evaporation and the dry-bulb temperature difference to cool the air within the heat exchange tubes. The water is typically at ambient temperature. Existing refrigeration equipment using dew-point indirect evaporative cooling technology suffers from ineffective cooling when the ambient temperature is high, resulting in reduced cooling efficiency. Utility Model Content

[0005] The problem to be solved by the utility model is how to effectively reduce the temperature in rural areas in combination with the local environmental characteristics during high temperature weather, thereby improving the cooling efficiency of the dew point indirect evaporative cooler.

[0006] The utility model solves the above problems as follows:

[0007] Including air inlet fan, temperature sensor module, pneumatic tube, fin, heat exchange tube, water pump, porous circular plate, refrigeration plate, water cooling head, three-way valve, electric regulating valve, solar panel, steering gear, pan / tilt, photoresistor, control system, water tank, air inlet, air outlet, water outlet, water supply pipe, return air pipe, return air inlet, air outlet, water spray pipe, water inlet

[0008] Inlet, circulating water outlet, waste air duct, outlet duct, air inlet duct;

[0009] The photoresistor is mounted on a solar panel, which is mounted on a pan / tilt platform. The pan / tilt platform is provided with a steering gear, and both the solar panel and the steering gear are connected to a control system.

[0010] The fan inlet end is provided with an air inlet section, the fan outlet end is connected with the inlet end of the inlet temperature and humidity sensing module, the outlet end of the temperature and humidity sensing module is connected with the inlet end of the pneumatic tube, a heat exchange tube is provided in the pneumatic tube, both ends of the heat exchange tube are fixed in the pneumatic tube by a porous circular plate, a water cooling head is attached to the cold end of the semiconductor refrigeration plate, and a heat sink is attached to the hot end of the semiconductor refrigeration plate, the pneumatic tube is provided with a water inlet which is connected to the water outlet of the water cooling head through a water inlet pipe, the water inlet of the water cooling head is connected to the water outlet of the water pump through a water inlet pipe, the pneumatic tube is provided with a water outlet which is connected to the water sink through the water outlet pipe, the pneumatic tube is provided with an exhaust port which is connected to the waste air duct, the pneumatic tube outlet end is connected to a tee joint, the first outlet end of the tee joint is a primary return air port connected to the return air duct section, the return air duct end is connected to the pneumatic tube return air port, the second outlet end of the tee joint is a primary exhaust port connected to the inlet end of the electric regulating valve, the outlet end of the electric regulating valve is connected to the outlet temperature and humidity sensing module, and the outlet end of the temperature and humidity sensing module is a primary exhaust port;

[0011] The holes on the porous circular plate correspond one to one with the heat exchange tubes;

[0012] The integrated control system includes a drive module, which controls the steering of the steering gear to drive the solar panels to rotate, controls the power of the cooling fan, and drives the entire device to move;

[0013] The air outlet of the waste air duct faces the heat sink.

[0014] The holes on the porous circular plate correspond to the heat exchange tubes one by one.

[0015] Further technical solutions are:

[0016] The cooling capacity of the semiconductor refrigeration plate is 18W-129W.

[0017] The thickness of the thermal grease applied between the water-cooled head and the semiconductor refrigeration plate in the radiator and the thickness of the thermal grease applied between the semiconductor refrigeration plate and the heat sink should be 0.5mm-1.5mm.

[0018] The photovoltaic direct-driven semiconductor refrigeration air conditioner is characterized in that the copper tube wall thickness of the heat exchange tube inside the pneumatic tube should be 0.03mm-0.1mm.

[0019] The photovoltaic direct-drive semiconductor refrigeration air conditioner is characterized in that the diameter of the water spray port of the water spray pipe on the upper right part of the heat exchange tube is 0.1mm-0.3mm.

[0020] Compared with the existing technology, the beneficial effects of the present invention are as follows:

[0021] (1) Improved efficiency of dew point indirect evaporative cooler. The addition of semiconductor cooling fins reduces the inlet water temperature of the dew point indirect evaporative cooler. Compared with the ambient water temperature of the traditional dew point indirect evaporative cooler, the cooling efficiency of the device is improved.

[0022] (2) Flexible electricity use and green energy. Taking into account the environmental characteristics of rural areas, a solar photovoltaic energy storage device is designed so that the device directly uses solar photovoltaic power generation, reducing electricity demand and saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0024] Figure 1 A schematic diagram of the system structure of a rural photovoltaic direct-drive semiconductor refrigeration air conditioner according to an embodiment of the utility model.

[0025] Figure 2 This is a gas flow diagram of the rural photovoltaic direct-driven semiconductor refrigeration air conditioner according to an embodiment of the utility model.

[0026] Figure 3 This is a top view of the rural photovoltaic direct-drive semiconductor refrigeration air conditioner described in an embodiment of the utility model.

[0027] Figure 4 This is a schematic diagram of the gas flow in the heat exchange tubes of the rural photovoltaic direct-drive semiconductor refrigeration air conditioner described in an embodiment of the utility model.

[0028] Figure 5 This is a schematic structural diagram of the porous circular plate of the rural photovoltaic direct-drive semiconductor refrigeration air conditioner described in an embodiment of the utility model.

[0029] Description of reference numerals:

[0030] 1-Inlet fan, 2-Temperature and humidity sensor module, 3-Pneumatic tube, 4-Heat sink, 5-Heat exchange tube, 6-Water cooling head, 7-Water pump, 8-Porous circular plate, 9-Semiconductor refrigeration plate, 10-Tee connector, 11-Electric regulating valve, 12-Solar panel, 13-Servo, 14-Pan-tilt, 15-Photoresistor, 16-Control system, 17-Water tank, 18-Air inlet, 19-Air outlet, 20-Water outlet, 21-Water supply pipe, 22-Return air duct, 23-Primary return air inlet, 24-Fresh air exhaust vent, 25-Spray pipe, 26-Water inlet, 27-Circulating water outlet, 28-Waste air duct, 29-Outlet duct, 30-Inlet duct. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other.

[0032] The specific implementation of the present utility model is described below with reference to the accompanying drawings.

[0033] The inlet end of the air inlet fan 1 is provided with an air inlet 18, the outlet end is connected to the positive electrode of the temperature sensor module 2, and the negative electrode is connected to the inlet end of the pneumatic tube 3. A heat exchange tube 5 is provided in the pneumatic tube 3, and a porous circular plate 8 is provided at each end of the pneumatic tube 3. The heat exchange tube 5 is fixed inside the pneumatic tube 3 through the porous circular plate 8; a water outlet 20 is opened on the surface of the pneumatic tube 3, and the water inlet end of the water outlet 20 is connected to the water supply pipe 21, and the water supply pipe 21 is connected to the water pump 7. A semiconductor refrigeration plate 9 is connected above the water supply pipe 21 and the water pump 7. The cold end of the semiconductor refrigeration plate 9 is in direct contact with the water supply pipe 21, and the hot end of the semiconductor refrigeration plate 9 is directly connected to the heat sink 4. The water pump 7 is placed in the water tank 17. The upper surface of the pneumatic tube 3 is provided with a return air duct 22, and the lower surface is provided with a circulating water outlet 27 and a waste air duct 28. The wind discharged by the waste air duct 28 blows on the surface of the heat sink 4, and the water discharged from the circulating water outlet 27 is stored in the water tank 17. The outlet end of the pneumatic tube 3 is connected to the three-way joint 10, and the other two ends of the three-way joint 10 are respectively connected to the return air duct 22 and the outlet pipe 29. The outlet pipe 29 is connected to the inlet end of the electric regulating valve 11. The outlet end of the electric regulating valve 11 is connected to the positive pole of the temperature sensor module 2, and the negative pole is connected to the air outlet 19. The control system 16 controls the control module of the entire system; the photoresistor 15 is connected to the upper side of the plane parallel to the solar panel 12

[0034] On the other hand, the solar panel 12 is placed on the gimbal 14, and the steering of the solar panel 12 is controlled by the servo 13;

[0035] The sleeve holes on the porous circular plate 8 correspond one to one with the heat exchange tubes 5;

[0036] The control system 16 includes a drive module, a temperature and humidity sensor and a single-chip microcomputer, which controls the servo to adjust the direction of the solar panel, adjusts the fan air volume ratio, monitors the ambient temperature in real time, controls the cooling power of the refrigeration plate so that the refrigeration plate can continue to operate at the most economical voltage, and monitors and adjusts the battery conversion system.

[0037] Specifically, such as Figure 3 As shown, the cross-flow heat exchanger 5 can be divided into a dry air side 31 and a wet air side 32 .

[0038] Specifically, such as Figure 2 As shown, the interior of the heat exchange tube 5 is the fresh air side, and the gap between the outside and the pneumatic tube 3 is the return air side.

[0039] The working method of this embodiment is as follows: Figure 2 As shown, the following process is included:

[0040] Fresh air is drawn into the pneumatic tube 3 from the air inlet 18 by the air inlet fan 1, and then enters the heat exchange tube 4 in the pneumatic tube 3. Part of the air is directly discharged from the air outlet pipe 29, and the other part enters the inside of the pneumatic tube 3 from the return air side through the return air pipe 22, and then flows back to the waste air pipe 28 from the secondary return air side for discharge.

[0041] The air volume ratio adjustment function of the present invention is achieved by receiving and processing the environmental data measured by the sensor through the single chip microcomputer in the control system 16 and changing the proportion of high level in a cycle through the drive module to adjust the opening and closing degree of the electric control valve 11 to achieve the adjustment of the air volume ratio. During the speed regulation process, the single chip microcomputer outputs and changes the PWM signal to drive the drive module to achieve the adjustment of the opening and closing degree of the electric control valve 11. When the temperature and humidity are in different ranges, the air volume ratio is different.

[0042] Furthermore, the present invention operates according to the ambient temperature and humidity adjustment control system 16, and the ambient temperature and humidity monitored by the temperature and humidity sensor enable the device to automatically adjust the air volume ratio to achieve stable air supply to meet the temperature drop requirement.

[0043] The photoresistor 15 , the servo 13 and the single chip microcomputer control included in the control system 16 can make the solar panel operate at the maximum power point at all times under different solar radiation intensities and ambient temperatures, thereby realizing the solar light tracking feature.

[0044] The single chip microcomputer included in the control system 16 outputs high and low levels through the PWM in the driving module, so that the refrigeration plate operates at the most economical point of voltage, ensuring economy and energy saving while cooling.

[0045] Specifically, by changing the voltage across the refrigeration plate, the power of the refrigeration plate is measured and a curve is drawn. The law is analyzed, and the point where the growth rate of the refrigeration plate power is the smallest as the voltage increases is taken as the most economical voltage. The voltage across the refrigeration plate is stabilized and the output power is obtained.

[0046] The working process of the solar power storage system is as follows:

[0047] The photoresistors are arranged in the up, down, left and right directions, corresponding to the up, down, left and right directions of the steering gear. Under the monitoring of the control system 16, the photoresistors detect vertical sunlight and reflect the collected light information to the control system 16. The control system 16 adjusts the steering direction of the steering gear 13 so that the solar panels are always exposed to vertical sunlight. The control module stores the electrical energy in the battery.

[0048] A detection module is provided to monitor the battery voltage. When the battery voltage is higher than a certain voltage, it will automatically switch to another battery.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A photovoltaic direct-driven semiconductor refrigeration air conditioner, characterized in that: The refrigeration air conditioner comprises an air inlet fan (1), a temperature and humidity sensor module (2), a pneumatic tube (3), a heat sink (4), a heat exchange tube (5), a water cooling head (6), a water pump (7), a porous circular plate (8), a semiconductor refrigeration plate (9), a three-way joint (10), an electric regulating valve (11), a solar panel (12), a steering gear (13), a pan / tilt platform (14), a photoresistor (15), a control system (16), a water storage tank (17), an air inlet (18), an air outlet (19), a water outlet (20), a water supply pipe (21), a return air pipe (22), a primary return air inlet (23), a water spray pipe (25), a water inlet (26), a circulating water outlet (27), a waste air pipe (28), an air outlet pipe (29), and an air inlet pipe (30); The photoresistor is mounted on a solar panel (12), the solar panel (12) is mounted on a pan / tilt platform (14), and the pan / tilt platform (14) is provided with a solar panel (12) and a steering servo (13), both of which are connected to a control system (16); The fan inlet end is provided with an air inlet (18), the fan outlet end is connected to the inlet end of the inlet temperature and humidity sensor module (2), the outlet end of the temperature and humidity sensor module (2) is connected to the inlet end of the pneumatic tube (3), a heat exchange tube (5) is provided in the pneumatic tube, both ends of the heat exchange tube (5) are fixed in the pneumatic tube (3) through a porous circular plate (8), a water cooling head (6) is attached to the cold end of the semiconductor refrigeration plate (9), and a heat sink (4) is attached to the hot end of the semiconductor refrigeration plate (9), the pneumatic tube (3) is provided with a water inlet (26) connected to the water outlet of the water cooling head (6) through the water inlet (26) and the water inlet pipe, and the water inlet of the water cooling head (6) is connected to the water pump (7) through the water inlet pipe. On the water outlet, the pneumatic tube (3) is provided with a water outlet (20) connected to the water storage tank (17) from the circulating water outlet (27) and the water pipe, the pneumatic tube (3) is provided with a return air port connected to the return air pipe (22), the outlet end of the pneumatic tube (3) is connected to the three-way joint (10), the first outlet end of the three-way joint (10) is a primary return air inlet (23) connected to the return air pipe (22), the return air pipe (22) end is connected to the return air port of the pneumatic tube (3), the second outlet end of the three-way joint (10) is connected to the inlet end of the electric regulating valve (11), the outlet end of the electric regulating valve (11) is connected to the outlet temperature and humidity sensor module (2), and the outlet end of the temperature and humidity sensor module (2) is the air outlet (19); The holes on the porous circular plate (8) correspond one to one with the heat exchange tubes (5); The control system (16) includes a drive module, which controls the steering of the steering gear (13) to drive the solar panel (12) to rotate, controls the power of the semiconductor refrigeration plate (9) and the fan (1), and drives the entire device to move; The outlet of the waste air pipe (28) faces the gap between the heat sinks (4).

2. The photovoltaic direct-driven semiconductor refrigeration air conditioner according to claim 1, characterized in that: The cooling capacity of the semiconductor refrigeration plate is 18W-129W.

3. The photovoltaic direct-driven semiconductor refrigeration air conditioner according to claim 1, characterized in that: The thickness of the thermal grease applied between the water-cooled head and the semiconductor refrigeration plate and the thickness of the thermal grease applied between the semiconductor refrigeration plate and the heat sink should be between 0.5mm and 1.5mm.

4. The photovoltaic direct-driven semiconductor refrigeration air conditioner according to claim 1, characterized in that: The wall thickness of the copper tube should be between 0.03mm and 0.1mm.

5. The photovoltaic direct-driven semiconductor refrigeration air conditioner according to claim 1, characterized in that: The water spray port of the water spray pipe (25) has a diameter of 0.1 mm to 0.3 mm.

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