CN100510558C - Single runner two stage dehumidify air-conditioner driven by solar - Google Patents

Abstract

A solar-powered single-wheel two-stage dehumidification air conditioner in the technical field of refrigeration and dehumidification, comprising: a wheel dehumidification device, a solar device, and the wheel dehumidification device includes: a dehumidification wheel, a heater, a processing fan, a regeneration fan, Motor, belt or gear, evaporative cooler, heat exchanger, in which: the motor is connected to the dehumidification wheel through a belt or gear to drive the dehumidification wheel to rotate, the heat exchanger is connected to the evaporative cooler, and the evaporative cooler is connected to the processing fan. The dehumidification wheel is divided into four areas, namely, the first-level treatment area, the first-level regeneration area, the second-level treatment area and the second-level regeneration area. There are two regeneration areas between the two-level treatment areas. Two-level regeneration zone connection. The first-stage treatment area and the second-stage treatment area of the dehumidification wheel are respectively connected with two-stage heat exchangers. The invention can effectively adjust temperature and humidity, realize miniaturization and low cost of heat-driven air-conditioning equipment, and the system can be utilized throughout the year.

Description

Solar-powered single-rotor two-stage desiccant air conditioner

technical field

The invention relates to an air conditioner in the technical field of refrigeration and dehumidification, in particular to a solar-powered single-wheel two-stage dehumidification air conditioner.

Background technique

The use of solar energy for air conditioning in summer is an important way to improve building comfort and energy saving, which is in line with the current general trend of energy saving, emission reduction and sustainable development. The dehumidification of the solid wheel can use solar energy to drive the dehumidification wheel to remove the moisture in the air, making it dry air, and then achieve a comfortable temperature and humidity range through direct evaporative cooling. It can effectively slow down the tense trend of electricity supply in summer and reduce the demand for fossil fuels. In addition, the dehumidification of the rotary wheel reduces the use of chlorofluorocarbon refrigerants, and there is no CFCS problem and no greenhouse effect. It is an environmentally friendly refrigeration method. The latest research also found that the air treated by the wheel can remove harmful gases and components and improve air quality. It is especially suitable for hot and humid climates. Compared with pure electric-driven air conditioners, it has the advantages of high efficiency and energy saving in heating and cooling, can handle more fresh air, has good air quality, and is environmentally friendly. Compared with conventional rotary dehumidification air conditioners, it can achieve lower temperature and humidity requirements.

Conventional first-stage dehumidification has the following disadvantages: 1) The regeneration temperature is high, mainly using heat sources such as electric heat and steam, and it is difficult to apply low-grade heat sources such as solar energy and waste heat. 2) The dehumidification capacity is limited, and sufficient moisture cannot be removed. Without the cooperation of electric refrigeration, the air supply temperature and humidity requirements of the comfort air conditioner cannot be met. 3) The deep dehumidification needs to cooperate with the electric refrigeration air conditioner, and the structure is complicated.

After searching the existing technical literature, it is found that the Chinese utility model patent "low dew point dehumidifier" with the patent number of 00227043.9, in this patent, the fresh air is directly dehumidified through the rotor, and the regeneration fan is regenerated through the regeneration air channel and the dehumidification rotor. side connection, the regenerative heater communicates with the regenerative side of the dehumidification rotor assembly through the regenerative air channel, this technology requires a special heat source, the energy efficiency is not ideal, and the required air temperature and humidity regulation cannot be achieved under the standard environmental conditions in summer range.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a solar-driven single-rotor two-stage desiccant air conditioner, which can effectively adjust temperature and humidity by using solar energy, which is different from electric compression refrigeration air conditioners, and can handle Fresh air and indoor heat recovery can realize the miniaturization and low cost of heat-driven air-conditioning equipment, and the system can be used throughout the year, further reducing the initial investment of air-conditioning and heating equipment.

The present invention is realized through the following technical proposals. The present invention includes: a wheel dehumidification device and a solar device, and the wheel dehumidification device is connected with the solar device. The wheel dehumidification device includes: a dehumidification wheel, a two-stage heater, a processing fan, a regeneration fan, a motor, a belt or gear, two evaporative coolers, and a two-stage heat exchanger. The motor is connected to the dehumidification wheel through a belt or gear, which drives the dehumidification wheel to rotate, and the heat exchanger is connected to the evaporative cooler. The dehumidification wheel is divided into four areas, namely the first-level treatment area, the first-level regeneration area, and the second The two-stage treatment area and the second-stage regeneration area are separated by two-stage regeneration areas. The regeneration fans are respectively connected to the two-stage regeneration areas, and the two-stage regeneration areas are respectively connected to the two-stage heaters. The first dehumidification wheel The first-stage treatment area and the second-stage treatment area are respectively connected with two-stage heat exchangers.

The air flow path of the rotary dehumidification device includes a processing air path and a regeneration air path. The physical series connection method of the present invention corresponding to the treatment air path is: the treatment air inlet pipe is connected to the inlet side of the first-stage treatment area, and the outlet side of the first-stage treatment area of the dehumidification rotor is connected to the first-stage heat exchanger through the air pipe. The first-stage heat exchanger is connected to the inlet side of the second-stage treatment area of the dehumidification wheel, and the other side of the second-stage treatment area is connected to the air pipe of the second-stage heat exchanger, and the second-stage heat exchanger passes through the air The tubes are connected to the evaporative cooler. The evaporative cooler is connected to the processing fan, which can also be placed between the above other components.

The physical connection method of the present invention corresponding to the regeneration air path of the air flow of the runner dehumidification device is: the regeneration air inlet main pipe is connected to the inlet side of the regeneration side evaporative cooler, and the regeneration side evaporative cooler is respectively connected to the first stage through the air pipe. Heater and second stage heater connections. The first-stage regeneration zone of the dehumidification wheel is connected to the first-stage heater through an air duct. The second-stage regeneration zone is connected with the second-stage heater through an air duct. The regeneration fans are respectively connected to the two-stage regeneration zones through air ducts, and the two-stage regeneration side components, that is, the first-stage regeneration side components (the first-stage heater, the first-stage regeneration zone of the dehumidification wheel) and the second-stage regeneration side components ( The second-stage heater, the second-stage regeneration area of the dehumidification wheel) are connected in parallel.

The heater is a cross-flow heat exchanger for exchanging heat between air and air, or a water-air heat exchanger.

The evaporative cooler is a direct evaporative cooler or a wet film humidifier capable of achieving isenthalpic humidification.

The heat exchanger is a cross-flow heat exchanger for exchanging heat between air and air.

The solar device includes a heat source and an auxiliary system. The heat source can be a solar hot water collector, or a solar air collector. Auxiliary systems vary depending on the heat source.

When the heat source is a solar hot water collector, the auxiliary system includes a hot water pump, a hot water tank, a hot water heat exchanger, a water tank bypass pipe, and an auxiliary heater. In this case, the connection mode of the solar energy device is that the solar heat collector is connected in parallel with the auxiliary water heater, and is connected with the heat exchanger in the water tank. The bypass water pipe is connected in parallel with the water tank, and is connected with the solar heat collector and the auxiliary heater. The heat exchanger in the water tank and the bypass water pipe are connected to the hot water pump through the water pipe, and the hot water pump is connected to the water side inlet of the first-stage regenerative heater and the second-stage regenerative heater through the water pipe.

When the heat source is a solar air heat collector, the auxiliary system includes an auxiliary air heater, a hot air fan, an inlet air duct of the heat collector, and the like. In this case, the connection mode of the solar energy device is that the inlet air pipe of the collector is connected with the solar air heat collector, and the other end of the solar air heat collector is connected with the hot air fan (the hot air fan can also be installed in other positions of the regeneration air path), The outlet of the hot air blower is connected with the auxiliary air heater. The outlet of the auxiliary air heater is connected to the first-stage regeneration area of the dehumidification rotor through the first-stage regeneration air duct, and the outlet of the auxiliary air heater is also connected to the second-stage regeneration area of the dehumidification rotor through the second-stage regeneration air duct.

The solar hot water heat collector uses water as the heat transfer medium, and is a flat plate heat collector, a vacuum tube heat collector, or a heat pipe heat collector.

The solar air heat collector uses air as heat transfer medium.

The auxiliary heat source is mainly used to provide heat energy when solar energy is insufficient, and is a gas heater or an electric heater. Or for compression heat pump, air conditioning waste heat or other industrial and civil waste heat.

The invention performs temperature and humidity treatment on outdoor fresh air or indoor return air, the humidity treatment is mainly completed by the runner dehumidification device, and the temperature treatment is mainly completed by the heat exchanger and the evaporative cooler. After the dehumidification of the first-stage runner, the process air is cooled by the heat exchanger, and flows through the second-stage runner again to make the process air drier. The dry process air passes through the heat exchanger again to realize the enthalpy drop, and then passes through the evaporative cooler. Cool and humidify, adjust to a suitable temperature and humidity state and send it indoors. The wheel dehumidification unit is regenerated by a heater whose heat comes from a solar unit.

The treatment area and regeneration area of the present invention are reversed in summer and winter. When applied in summer, the air in the treated area is used, and the rotor plays the function of dehumidification. When applied in winter, the air passing through the regenerated area is used, and the runner plays the function of increasing the moisture content in the air. The dehumidifier used can be regenerated at a low regeneration temperature (50-70°C), so it can be regenerated using solar hot water, solar hot air, etc. The dehumidifier includes silica gel, lithium chloride, molecular sieve, composite dehumidifier and the like.

The working principle of the present invention is:

(1) During the cooling season of the air conditioner, the runner treatment area absorbs moisture in the air, that is, dehumidification, and the regeneration zone removes the moisture adsorbed in the runner through high-temperature air, that is, regeneration. Under standard summer conditions, the first stage rotor cannot remove enough moisture to cool down to a suitable temperature. This is because the dehumidification process is basically an isenthalpic heating process. Therefore, the enthalpy of the treated air is reduced by connecting the dehumidification of the two-stage runner and the cooling of the heat exchanger in series. Make the temperature and humidity of the treated air reach a moderate temperature and low moisture content under high-temperature and high-humidity conditions, and then process it through an evaporative cooler to achieve a reduced temperature and appropriate moisture content. The regeneration air can be outdoor air or indoor return air. It enters the evaporative cooler on the regeneration side from the regeneration air inlet main pipe, and is enthalpy humidified and the temperature drops. Then it enters the first and second treatment heat exchangers respectively, which are used to cool the treatment air and get preheated.

(2) In the heating season, the air is heated by the heater, and then passed through the regeneration zone of the runner to increase the moisture content in the air to reach a suitable temperature and humidity state, and then send it into the room.

In the prior art, the vapor-compression electric refrigeration air conditioner is likely to cause peak electricity consumption in summer, generally cannot provide fresh air, and requires low-temperature dehumidification, and the air supply temperature is low. No humidification function in winter. However, the present invention uses solar energy as a heat source, and only a small amount of electric energy is used by fans and electric motors, and the effect of saving electric energy during the summer electricity peak is remarkable. And the air can be directly processed to the temperature and humidity required indoors, making the air supply more comfortable. It can input fresh air into the room, carry out effective heat and humidity treatment on the fresh air, and can recover the cold (heat) in the room. It can be directly used for heating in winter and has a certain humidification function.

Compared with the prior art, the present invention has the following advantages and effects: (1) the existing single-stage dehumidification air conditioner cannot reach the temperature and humidity required for indoor comfort under the summer standard working conditions, while the present invention can achieve lower temperature and humidity, Meet the comfort requirements of air conditioning. (2) The present invention has simple structure, is easy to control, and has low equipment investment cost. Under the same working conditions, the energy efficiency is better than that of adsorption and absorption air conditioners. Using natural working fluids such as air and water as the medium, there is no problem of ozone layer destruction, greenhouse gas emissions, or environmental pollution. It is a green and energy-saving refrigeration unit.

Description of drawings

Fig. 1 is the structural representation of the embodiment of solar hot water drive of the present invention

Fig. 2 is a schematic diagram of the structure of the partition of the dehumidification wheel in Fig. 1

Fig. 3 is the structural representation of the embodiment of solar thermal air drive of the present invention

Detailed ways

The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

Example 1

As shown in Figure 1, it is a single-wheel two-stage desiccant air conditioner driven by solar hot water.

This embodiment includes: a second-stage regenerative fan 1, a dehumidification runner 2, a runner drive motor 3, a runner drive belt 4, a second-stage regeneration heater 5, a second-stage treatment heat exchanger 6, and a second-stage regeneration Air inlet duct 7, evaporative cooler 8, treatment fan 9, first-stage regeneration fan 10, treatment air inlet duct 11, first-stage regeneration heater 12, first-stage treatment heat exchanger 13, first-stage regeneration Air inlet duct 14, regeneration side evaporative cooler 15, regeneration air inlet main pipe 16, hot water pump 17, hot water tank 18, hot water heat exchanger 19, water tank bypass pipe 20, auxiliary heater 21, solar collector twenty two.

As shown in FIG. 2 , the structure schematic diagram of the desiccant wheel with two partitions, the first-stage treatment area 23 , the first-stage regeneration area 24 , the second-stage treatment area 25 , and the second-stage regeneration area 26 . The treatment area is connected with the regeneration area, and the regeneration area is separated between the two treatment areas. The first-level treatment area 23, the second-level treatment area 25, the first-level regeneration area 24, and the second-level regeneration area 26 account for 3/8, 3/8, and 1/8 of the area ratios of the cross-section of the dehumidification rotor 2, respectively. , 1/8, or other ratios, such as 1/4, 1/4 and 1/4, 1/4.

The structure of this embodiment can be divided into a wheel dehumidification device and a solar device. Its connection method is:

The runner drive motor 3 is connected with the dehumidification runner 2 through the runner drive belt 4 (or gear), and drives the dehumidification runner 2 to rotate. The runner drive motor 3, the runner drive belt 4 (or gear), and the dehumidification runner 2 form the runner drive assembly.

The air flow of the rotary dehumidification device is divided into two paths, that is, the treatment air path and the regeneration air path. The connection mode of the treatment air path is: the treatment air inlet air pipe 11 is connected with the air inlet side of the first-stage treatment area 23 of the dehumidification rotor 2, and the air outlet side of the first-stage treatment area 23 is exchanged with the first-stage treatment area through the air duct. Heater 14 is connected to the treatment side inlet. The outlet of the treatment side of the first-stage treatment heat exchanger 13 is connected to the air inlet side of the second-stage treatment area 25 of the dehumidification rotor 2 through an air duct. The outlet side of the second-stage treatment area 25 is connected to the inlet of the treatment side of the second-stage treatment heat exchanger 6 through an air pipe, and the outlet of the treatment side of the second-stage treatment heat exchanger 6 is connected to the evaporative cooler 8 through an air pipe. The evaporative cooler 8 is connected with the processing blower 9 again.

The connection mode of the regeneration air path is: the regeneration air inlet main pipe 16 is connected to the inlet of the regeneration-side evaporative cooler 15, and then the regeneration-side evaporative cooler 15 is respectively connected to the first-stage treatment heat exchanger 13 and the second-stage treatment heat exchanger 6 (The regeneration air is used to cool the process air and is preheated). One side of the first-stage regenerative heater 12 is connected to the outlet of the regeneration air side of the first-stage treatment heat exchanger 13, and the other side is connected to the first-stage regeneration zone 24 of the dehumidification runner 2 through an air duct. The first-stage regeneration zone 24 The air outlet side is connected with the first-stage regenerative fan 10 . One side of the second-stage regeneration heater 5 is connected with the second-stage treatment heat exchanger 6, and the other side is connected with the second-stage regeneration area 26 of the dehumidification runner 2, and the outlet of the second-stage regeneration area 26 of the dehumidification runner 2 The wind side is connected with the second-stage regenerative fan 1 (it can also be connected with the first-stage regenerative fan 10 through an air duct, that is, the regenerative side is driven by only one air duct). The two-stage regenerative side components are connected in parallel.

The connection mode of the solar device is: the solar heat collector 22 is connected in parallel with the auxiliary water heater 21, and is connected with the heat exchanger 19 in the water tank 18, and the water tank is used for heating domestic hot water. The bypass water pipe 20 is connected in parallel with the water tank, and is connected with the solar heat collector 22 and the auxiliary water heater 21 . The heat exchanger 19 and the bypass water pipe 20 are connected to the hot water pump 17 through water pipes, and the hot water pump 17 is connected to the water side inlet of the first stage regeneration heater 12 and the second stage regeneration heater 5 through water pipes. The water side outlets of the first stage regenerative heater 12 and the second stage regenerative heater 5 are connected with the solar heat collector 22 to form a closed cycle. In this case the water sides of the two regenerative heaters are connected in parallel. The two-stage regenerative heaters can also be connected in series, that is, the hot water pump 17 is connected to the first-stage regenerative heater 12 through a water pipe, and the first-stage regenerative heater 12 is connected to the second-stage regenerative heater 5 . The second stage regenerative heater 5 is connected with the solar heat collector 22 to form a closed cycle. Or the hot water pump 17 is connected to the second-stage regeneration heater 5 through a water pipe, and the second-stage regeneration heater 5 is connected to the first-stage regeneration heater 12 again. The first stage regenerative heater 12 is connected with the solar heat collector 22 to form a hot water closed cycle.

The cooling and dehumidification method of the two-stage rotor dehumidification air conditioner realized by the above equipment is: outdoor air or indoor return air, or indoor and outdoor mixed air (referred to as processing air) enters the first stage of the dehumidification rotor 2 from the processing air inlet duct 11 In the treatment zone 23, the moisture in the air is adsorbed by the dehumidification wheel, and this process is an isenthalpic process. The air temperature has risen, if you continue to dehumidify, the dehumidification effect will become worse. The process air then enters the primary process heat exchanger 13, where it transfers heat to a cooling medium, such as water or air, on the other side of the heat exchanger. Then, the cooled air enters the second-stage treatment area 25 of the dehumidification wheel 2 again, and the moisture in the air is further absorbed by the second-stage treatment area 25 of the dehumidification wheel 2 to become air with a lower moisture content. Then, it enters the second-stage processing heat exchanger 6 again, and transfers heat to the cooling medium on the other side of the heat exchanger. Since the selected cooling medium is cooling tower cold water or outdoor air, or indoor return air, the temperature drop of the treated air through the second-stage heat exchanger 7 has not yet reached the comfortable air supply requirement. Since the moisture content of the processing air at this time is low, that is, the enthalpy drop has reached the air supply requirement, the processing air flows through the evaporative cooler 8 to reduce the temperature and humidity and increase the moisture content, thereby achieving a comfortable air supply temperature and humidity working condition . The flow of the processing wind is driven by the processing fan 9 at the outlet of the evaporative cooler 8 (the processing fan 9 can also be arranged between other components through which the processing wind flows) and sent into the air-conditioned room.

The wheel drive motor 3 drives the dehumidification wheel 2 to rotate through a belt (or gear). The first treatment area 23 and the second treatment area 25 of the dehumidification wheel absorb moisture and rotate under the drive of the motor to the first and second regeneration areas 24 and 26 to be heated by regeneration air to remove the adsorbed moisture. The regeneration air can be outdoor air or indoor return air, which enters the first and second regeneration heaters 12 and 5 respectively from the first and second regeneration air inlet pipes 14 and 7, and is heated to the required regeneration temperature before entering the dehumidification The regenerating area of the runner. The flow of the two-stage regeneration air is driven by the regeneration fan 10, 1 arranged at the outlet of the regeneration zone (the regeneration fan can also be arranged at other positions where the regeneration air flows), and is discharged to the outside.

The two-stage runner dehumidification air conditioner in this embodiment only uses one runner and a runner drive system, has a compact structure, and mainly relies on solar hot water as a heat source. This embodiment can be applied to summer air conditioning in commercial buildings, civil buildings, etc., and is suitable for medium and small systems.

Example 2

As shown in Figure 3, it is a single-wheel two-stage desiccant air conditioner driven by solar hot air, which is used for air conditioning and cooling in summer.

As shown in Fig. 3, this embodiment includes: the second-stage regenerative fan 1, the dehumidification runner 2, the runner drive motor 3, the runner drive belt 4, the second-stage treatment heat exchanger 6, the second-stage cooling air inlet air Pipe 7, evaporative cooler 8, processing fan 9, first stage regeneration fan 10, processing air inlet duct 11, first stage processing heat exchanger 13, first stage cooling air inlet duct 14, cooling air evaporative cooler 15. Cooling air inlet main pipe 16, second-stage processing air inlet air valve 27 in winter, second-stage processing air inlet duct 28 in winter, intermediate valve 29 for processing air, second-stage regeneration air pipe 30, and bypass valve 31 for processing air , Handle wind side air duct 32, first stage regeneration air duct 33, auxiliary air heater 34, hot air blower 35, solar air heat collector 36, collector inlet air duct 37. The partition structure of the dehumidification wheel is shown in Figure 2.

The difference between this embodiment and Embodiment 1 is that the solar air heat collector is used, and the first-stage regenerative heater and the second-stage regenerative heater are omitted. The regeneration-side evaporative cooler 15 in Embodiment 1 is renamed the cooling air evaporative cooler 15 in this embodiment.

The structure of this embodiment can also be divided into a wheel dehumidification device and a solar device, and its connection mode is:

The runner drive motor 3 is connected with the dehumidification runner 2 through the runner drive belt 4 (or gear), and drives the dehumidification runner 2 to rotate. The runner drive motor 3, the runner drive belt 4 (or gear), and the dehumidification runner 2 form the runner drive assembly.

The air flow of the rotary dehumidification device is divided into two paths, that is, the processing air path and the cooling air path. The connection mode of the treatment air path is as follows: the treatment air inlet duct 11 is connected with the air inlet side of the first-stage treatment area 23 of the dehumidification rotor 2, and the air outlet side of the first-stage treatment area 23 is connected with the treatment air intermediate valve 29. The air intermediate valve 29 is connected with the inlet of the treatment side of the first-stage treatment heat exchanger 14 through an air pipe. The outlet of the treatment side of the first-stage treatment heat exchanger 13 is connected to the air inlet side of the second-stage treatment area 25 of the dehumidification rotor 2 through an air duct. The outlet side of the second-stage treatment area 25 is connected to the inlet of the treatment side of the second-stage treatment heat exchanger 6 through an air pipe, and the outlet of the treatment side of the second-stage treatment heat exchanger 6 is connected to the evaporative cooler 8 through an air pipe. The evaporative cooler 8 is connected with the processing blower 9 again. The air outlet side of the first stage treatment area 23 is also connected with the treatment air bypass valve 31 and the treatment air bypass ventilation pipe 32 . The side ventilation pipe 32 of the processing air is connected with the processing fan 9 again. The air duct 28 of the second-stage treatment air inlet in winter is connected with the air valve 27 of the second-stage treatment air inlet in winter, and the air valve 27 is connected with the air inlet side of the second-stage treatment area 25 of the dehumidification runner 2 through the air pipe.

The connection mode of the cooling air path is: the cooling air inlet main pipe 16 is connected with the cooling air evaporative cooler 15, and then the cooling air evaporative cooler 15 is respectively connected with the first-stage treatment heat exchanger 13 and the second-stage treatment heat exchanger 6 ( for cooling process wind). The outlet on the cooling air side of the first-stage treatment heat exchanger 13 is connected to the second-stage regenerative fan 1 to guide the cooling air to the outdoor environment. The outlet of the cooling air side of the second-stage treatment heat exchanger 6 is connected with the first-stage regenerative fan 10 to lead the cooling air to the outdoor environment.

The connection mode of the solar heat collecting device is: the inlet air duct 37 of the heat collector is connected with the solar air heat collector 36, and the solar air heat collector 36 is connected with the hot air blower 35 (the hot air blower 35 can also be installed in other positions of the regeneration wind path ), the outlet of the hot air blower 35 is connected with the auxiliary air heater 34. The outlet of the auxiliary air heater 34 is connected to the first-stage regeneration area 24 through the first-stage regeneration air pipe 33 , and the outlet of the auxiliary air heater 34 is also connected to the second-stage regeneration area 26 through the second-stage regeneration air pipe 33 . The first-stage regeneration area 24 is connected with the first-stage regeneration fan 10 , and the second-stage regeneration area 26 is connected with the second-stage regeneration fan 1 .

The cooling and dehumidification method of the two-stage rotary dehumidification air conditioner realized by the above structure is as follows: in winter, the second-stage process air inlet damper 27 is closed, the process air bypass valve 31 is closed, and the process air intermediate valve 29 is opened. Outdoor air or indoor return air, or indoor and outdoor mixed air (referred to as treated air) enters the first-stage treatment area 23 of the dehumidification rotor 2 from the treatment air inlet duct 11, and the moisture in the air is absorbed by the dehumidification rotor. The process is an isenthalpic process. The air temperature has risen, if you continue to dehumidify, the dehumidification effect will become worse. Therefore, the treatment air then enters the first-stage treatment heat exchanger 13 through the treatment air intermediate valve 29, and transfers heat to the cooling medium on the other side of the heat exchanger. In this embodiment, the cooling medium is air (or water). Then, the cooled air enters the second-stage treatment area 25 of the dehumidification wheel 2 again, and the moisture in the air is further absorbed by the second-stage treatment area 25 of the dehumidification wheel 2 to become air with a lower moisture content. Then, it enters the second-stage processing heat exchanger 6 again, and transfers heat to the cooling medium on the other side of the heat exchanger. Since the selected cooling medium is cooling tower cold water or outdoor air, or indoor return air, the temperature drop of the treatment air through the second-stage treatment heat exchanger 7 has not yet reached the comfortable air supply requirement. Since the moisture content of the processing air at this time is low, that is, the enthalpy drop has reached the air supply requirement, the processing air flows through the evaporative cooler 8 to reduce the temperature and humidity and increase the moisture content, thereby achieving a comfortable air supply temperature and humidity working condition . The flow of the processing wind is driven by the processing fan 9 at the outlet of the evaporative cooler 8 (the processing fan 9 can also be arranged between other components through which the processing wind flows) and sent into the air-conditioned room.

The wheel drive motor 3 drives the dehumidification wheel 2 to rotate through a belt (or gear). The first treatment area 23 and the second treatment area 25 of the dehumidification wheel absorb moisture and rotate under the drive of the motor to the first and second regeneration areas 24 and 26 to be heated by regeneration air to remove the adsorbed moisture. Ambient air is driven by hot air blower 35 and enters solar air heat collector 36 through heat collector inlet air pipe 37 . This air is heated in the solar air heat collector 36 to become regeneration air. Regeneration air enters the first and second regeneration zones 23 and 25 of the dehumidification rotor through the first and second regeneration air inlet ducts 33 and 30 respectively. The flow of the two-stage regeneration wind used to regenerate the runner (take away the moisture in the runner) is respectively driven by the regeneration fans 10 and 1 arranged at the outlet of the regeneration zone, and is discharged to the outside.

The two-stage runner dehumidification and air conditioning method only uses one runner and a runner drive system, has a compact structure, and mainly relies on solar air heat collectors as heat sources. This equipment can be used in summer air conditioning in commercial buildings, civil buildings and other occasions.

Example 3

This embodiment is used for heating in winter, and the structure is shown in Figure 3. The difference from Embodiment 2 is that the structure of this embodiment does not include: the first stage processing heat exchanger 13, the first stage cooling air inlet duct 14, the cooling air evaporative cooler 15, the cooling air inlet main pipe 16, the second stage Dealing with heat exchanger 6, evaporative cooler 8, they are not working in this embodiment.

The winter heating method of the two-stage desiccant dehumidification air conditioner realized by the above structural features is:

In winter, the air valve 27 of the second-stage treatment air inlet is opened, the treatment air bypass valve 31 is opened, and the treatment air intermediate valve 29 is closed. Outdoor air or indoor return air, or indoor and outdoor mixed wind (regeneration air for short) ambient air is driven by the hot air fan 35 and enters the solar air heat collector 36 through the heat collector inlet air duct 37 . This air is heated in the solar air heat collector 36 to become regeneration air. Regeneration air enters the first and second regeneration zones 23 and 25 of the dehumidification rotor through the first and second regeneration air inlet ducts 33 and 30 respectively. It is used to regenerate the runner, obtain the moisture in the runner, and humidify the air. The flow of two-stage regeneration air is respectively driven by the regeneration fans 10 and 1 arranged at the outlet of the regeneration zone, and sent into the room for heating.

Outdoor ambient air (referred to as treated air) enters the first stage 23 treatment area of the dehumidification rotor 2 from the treatment air inlet duct 1, and the moisture in the air is absorbed by the dehumidification rotor. Afterwards, it passes through the treatment air bypass valve 31 and the first-stage bypass air pipe 32, and is discharged outdoors by the treatment fan 9 . The other outdoor ambient air enters the second-stage treatment area 25 of the first-stage dehumidification runner 2 from the second-stage treatment air inlet duct 28 in winter, and the second-stage treatment air inlet damper 27 in winter, and the moisture in the air is absorbed by the dehumidification runner. adsorption. Then it is discharged outdoors through the processing blower 9. The air flow process and state change of the second-stage treatment side are the same as those of the first stage.

The two-stage rotary dehumidification air conditioner can be used for humidification and heating in winter in public buildings such as libraries, commercial buildings, and factories. Embodiment 1 can also be added by adding the air valve 27 of the second-stage treatment air inlet in winter, the air duct 28 of the second-stage treatment air inlet in winter, the middle valve 29 of the treatment air, the bypass valve 31 of the first-stage air treatment and the bypass ventilation pipe of the treatment air 32. Realize the humidification and heating mode in winter similar to this example.

It can be seen from the above embodiments that the present invention can provide heat-driven refrigeration methods different from adsorption and absorption refrigeration, and realize miniaturization and cost reduction of heat-driven air-conditioning equipment. Moreover, during winter operation, solar energy can be used to provide heating, ventilation and humidification functions, so that the system can be used throughout the year, further reducing the initial investment of air conditioning and heating equipment. The invention has the characteristics of simple structure, easy control of system operation, etc., can effectively utilize low-grade heat sources such as solar energy, and has no environmental pollution. It is a green and energy-saving refrigeration unit.

Claims (10)

1, a kind of single runner two stage dehumidify air-conditioner of Driven by Solar Energy, comprise: rotary dehumidifier, solar energy equipment, rotary dehumidifier is connected with solar energy equipment, it is characterized in that, described rotary dehumidifier comprises: desiccant wheel, double-bank heater, handle blower fan, the regeneration blower fan, motor, belt or gear, two devaporizers, the two-stage heat exchanger, motor is connected with desiccant wheel by belt or gear, the drive desiccant wheel rotates, heat exchanger is connected with devaporizer, desiccant wheel is divided into first order treatment region, first order renewing zone, four zones in second level treatment region and renewing zone, the second level, between the bi-level treatment district across the two-stage renewing zone, the regeneration blower fan is connected with the two-stage renewing zone respectively, the two-stage renewing zone is connected with double-bank heater respectively, the first order treatment region of desiccant wheel, second level treatment region is connected with the two-stage heat exchanger respectively.

2, the single runner two stage dehumidify air-conditioner of Driven by Solar Energy according to claim 1, it is characterized in that, described desiccant wheel first order treatment region inlet side is connected with processing wind inlet pipe, first order treatment region outlet side is connected with first order heat exchanger by airduct, first order heat exchanger is connected with desiccant wheel second level treatment region inlet side again, and second level treatment region opposite side is connected with second level heat exchanger airduct, second level heat exchanger is connected with devaporizer by airduct, devaporizer is connected with the processing blower fan, and the inlet air flow path that constitutes rotary dehumidifier has the wind path of processing footpath.

3, the single runner two stage dehumidify air-conditioner of Driven by Solar Energy according to claim 1, it is characterized in that, described devaporizer inlet side is connected with regeneration wind inlet house steward, devaporizer is connected with primary heater and second level heater respectively by airduct, desiccant wheel first order renewing zone is connected with primary heater by airduct, renewing zone, the second level is connected with second level regenerative heater by airduct, the regeneration blower fan is connected by airduct with the two-stage renewing zone respectively, the inlet air flow path that constitutes rotary dehumidifier has regeneration wind path footpath, wherein: primary heater, desiccant wheel first order renewing zone constitutes first order regeneration side component, second level heater, renewing zone, the desiccant wheel second level constitutes second level regeneration side component, first order regeneration side component, be connected in parallel between the second level regeneration side component.

According to the single runner two stage dehumidify air-conditioner of claim 1 or 3 described Driven by Solar Energy, it is characterized in that 4, described heater is the cross-flow heat exchanger of air and air heat exchange, or the aqueous vapor heat exchanger.

5, the single runner two stage dehumidify air-conditioner of Driven by Solar Energy according to claim 1 and 2 is characterized in that, described heat exchanger is the cross-flow heat exchanger of air and air heat exchange.

6, the single runner two stage dehumidify air-conditioner of Driven by Solar Energy according to claim 1 and 2 is characterized in that, described devaporizer is for realizing the direct evaporative cooler or the wet-membrane humidifier of equal-enthalpy humidifying.

7, the single runner two stage dehumidify air-conditioner of Driven by Solar Energy according to claim 1 is characterized in that, described solar energy equipment, comprise thermal source and accessory system thereof, thermal source is a solar hot water heat collector, perhaps solar energy air heat collector, and accessory system is determined by thermal source.

8, the single runner two stage dehumidify air-conditioner of Driven by Solar Energy according to claim 7, it is characterized in that, when the thermal source of described solar energy equipment is solar hot water heat collector, accessory system comprises heat-exchanger pump, hot water, hot water heat exchanger, the water tank Bypass hose, the auxiliary heat hydrophone, connected mode is: solar thermal collector is in parallel with the auxiliary heat hydrophone, be connected with the hot water heat exchanger in the water tank, the water tank Bypass hose is in parallel with hot water, and be connected with solar thermal collector and auxiliary heat hydrophone, hot water heat exchanger and Bypass hose in the water tank are connected with heat-exchanger pump by water pipe, heat-exchanger pump and first order regenerative heater, second level regenerative heater water side-entrance connects by water pipe, first order regenerative heater is connected with solar thermal collector with second level regenerative heater water side outlet, forms closed circulation.

9, the single runner two stage dehumidify air-conditioner of Driven by Solar Energy according to claim 8, it is characterized in that, described solar hot water heat collector is to be heat transfer medium with water, be flat-plate collector, electron tubes type heat collector or heat pipe type heat collector, described solar energy air heat collector is to be heat transfer medium with the air.

10, the single runner two stage dehumidify air-conditioner of Driven by Solar Energy according to claim 7, it is characterized in that, when the thermal source of described solar energy equipment is solar energy air heat collector, accessory system comprises the auxiliary air heater, air-heater, heat collector import airduct, connected mode is: heat collector import airduct is connected with solar energy air heat collector, the solar energy air heat collector other end is connected with air-heater, the outlet of air-heater is connected with the auxiliary air heater, and the auxiliary air heater outlet is connected with desiccant wheel first order renewing zone by first order regeneration airduct, the auxiliary air heater outlet also is connected with renewing zone, the desiccant wheel second level by second level regeneration airduct.

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