CN104676789A - Multifunctional runner-type energy-saving ventilator - Google Patents

Abstract

The invention provides a multi-functional rotary wheel energy-saving ventilator, which includes a casing, a heat exchanger and a fan device placed in the casing, and the heat exchanger is a rotary wheel heat storage, filtration, and heat exchange with air filtering function The device is made of air filter materials with breathable, water-resistant, heat storage, heat exchange and filtering functions, and is used for indoor and outdoor air exchange, recovery of exhaust energy, and filtration and purification of fresh air. The fan unit includes an electric motor and wind wheel assembly. Cooling models also include a water supply system and a fresh air dehumidification system. Before the indoor air is discharged outside, it is enthalpy humidified and cooled to close to the wet bulb temperature in the machine, and the filter heat exchanger is cooled at the same time. The fresh air entering the room and the cooled filter heat exchanger Cooling by heat exchange to achieve iso-humid cooling, and can also be dehumidified by the dehumidification system to achieve iso-thermal dehumidification and cooling. This kind of ventilator has cooling and purification functions at the same time. It has no compressor, no Freon, simple structure and low power consumption. It can replace the existing compressed air conditioners, fresh air ventilators, air purifiers and air conditioning fans in many occasions , heaters and other professional air treatment equipment, can be widely used in households and public places, with high technical and economic value.

Description

A multi-functional rotary wheel energy-saving ventilator

technical field

The invention relates to an indoor air treatment device, in particular to a ventilation device with multiple functions of indoor and outdoor ventilation, recovery of ventilation energy, fresh air purification and refrigeration.

the

Background technique

With the improvement of people's living standards, people's demand for cooling the air in the living room, indoor and outdoor ventilation, recovery of ventilation energy and purification of indoor air is becoming more and more urgent. Never before, people have to use multiple devices such as fresh air ventilators, compressed air conditioners, and air purifiers to meet these needs, which not only requires high investment and occupies a large area, but also has some insurmountable shortcomings.

Fresh air ventilator: The cross-flow plate heat exchanger is dominant in the domestic and foreign markets, which is a partition-type indirect heat exchange. It is very difficult for the actual heat recovery rate to reach 50%. In addition, the short service life of being easily blocked almost makes it lose the economic value of actual use. Although the rotary ventilator with slightly higher efficiency is a convective direct contact heat exchange, the air passage holes of the heat exchange wheel are corrugated or honeycomb, without air filtering function, and of course there is no cooling function, and the structure is complicated. At least three electric motors are required, the manufacturing cost is higher, and the service life is lower, and the examples that can be put into trial are much less than that of plate heat exchangers.

Compression air conditioner: the existing technical equipment has high power consumption, complex structure, high manufacturing cost, and the refrigerant is chlorine lyon that destroys the atmospheric ozone layer. Its development does not conform to the world trend of environmental protection and energy saving. Today, there is no effective substitute The extensive use of is only a last resort stopgap measure. In recent years, many people try to solve this problem by evaporative cooling of water. The water evaporative air conditioner that uses water for direct evaporative cooling is commonly called "air conditioning fan" for household use, and "environmental protection air conditioner" for commercial use. It can cool down but not refrigerate, and it is impossible to replace the compression air conditioner in most areas of our country with high humidity. The patent application number is 201210168743.0, and the invention named "Dew Point Indirect, Direct Evaporative Cooler Modular Evaporative Cooling Air Conditioner" attempts to replace the compression air conditioner with a technical solution combining direct evaporative cooling and indirect evaporative cooling, but its Indirect evaporative cooling is a partitioned heat exchange with very low efficiency. The main function is still the isenthalpic humidification of direct evaporative cooling. Its effect is not fundamentally improved compared with water evaporative air conditioners. After the outdoor air is treated, the total heat is reduced very little. It can only be close to its wet bulb temperature, but not close to the dew point. On the contrary, the structure is more complicated, the cost is higher, and it is difficult to apply.

In order to overcome the shortcomings of existing compression air conditioners, a lot of attempts have been made in the industry, mainly in absorption air conditioners and dehumidification air conditioners. In addition to the higher equipment investment than the compression type, the absorption air conditioner also has the problems of corrosiveness of the hygroscopic agent, system sealing, heat source, and power saving. The industry believes that this is an insurmountable gap in the development of the air conditioner. Dehumidification air conditioners also have the problem of heat sources. Although solar energy and other low-grade heat sources can save energy, the limitations of equipment investment and household users restrict their popularization and application. Their comprehensive technical economy is far from being comparable to that of compression air conditioners.

From the point of view of refrigeration principle, none of the above technical solutions break through the limitation of single evaporative refrigeration or dehumidification refrigeration, so their technical and economic indicators are difficult to make a breakthrough improvement.

Air purifier: Today, when air pollution has become the focus of people's attention, it has quickly become a necessary household facility for ordinary families, but it can only eliminate solid particles in the indoor air, and a few can also decompose or adsorb harmful gases such as formaldehyde and benzene. But its efficiency is very low, and the door must be closed when using it. The accumulation of indoor carbon dioxide and carbon monoxide and the lack of fresh oxygen have brought new hazards to people's health, which runs counter to the biggest magic weapon of health care—ventilation. Needless to say, its home configuration can cost thousands of yuan or even tens of thousands of yuan, which makes ordinary consumers stop.

In addition, these three types of equipment perform their own duties. A general living space requires all three, which is not economical, but also complicated, and even becomes a burden to the family.

Consumers hope to have a kind of air-conditioning device with multiple functions such as indoor and outdoor ventilation and recovery of ventilation energy and purification of refrigeration fresh air, no compressor, no Freon refrigeration, etc., but there is no such technical solution so far.

Contents of the invention

The purpose of the present invention is to overcome the single function of the existing technology, which cannot meet the needs of air purification and refrigeration at the same time, and the existing air conditioner has high power consumption, complex structure, high manufacturing cost, and pollutes the environment. The service life is short, and the existing air purifiers cannot be ventilated and ventilated. A high-efficiency, low-cost air treatment technology and equipment with the functions of the above three types of equipment are provided.

In order to achieve the above object, the present invention designs a multifunctional rotary energy-saving ventilator, which includes a casing 10, a heat exchanger and a fan device 30 placed in the casing, and a heat exchange chamber is arranged in the casing 10. The heat exchanger is a filter heat exchanger 20 with air filtering function, which is a rotary heat storage filter heat exchanger, which includes a heat exchange wheel 22 that rotates around its central axis during work; the filter heat exchanger 20 and fan unit 30 are placed together in the heat exchange cavity.

The filter heat exchanger 20 and the fan device 30 are placed together in the heat exchange chamber;

The blower device includes a motor 33 and a wind wheel assembly 31 installed on the output shaft of the motor. The rotation axis of the heat exchange wheel 22 and the rotation axis of the motor 33 coincide with each other.

The casing 10 is provided with a longitudinal partition 15 and a transverse partition 16, which divide the heat exchange chamber in the casing into a fresh air front chamber 101, a fresh air rear chamber 102, an exhaust front chamber 103, and an exhaust rear chamber 104; There is a circular through hole in the middle of the longitudinal partition 15, and the heat exchange runner is placed in the through hole in the plane of the longitudinal partition 15; the heat transfer runner 22 is divided by the transverse partition 16 into a constantly shifting fresh air area 221 and an exhaust area. 222. The fresh air area falls into the fresh air chamber, that is, the fresh air front chamber and the rear chamber, and the exhaust air area falls into the exhaust chamber. When the heat exchange wheel rotates, each area continuously enters and exits the fresh air chamber and exhaust chamber. Then its various areas are also continuously and periodically switched between the fresh air area and the exhaust air area. There is an air supply port 12 connected to the interior on the casing wall of the fresh air front chamber, an air return port 11 connected to the interior on the casing wall of the exhaust front chamber, and a fresh air port 13 connected to the outdoor on the casing wall of the fresh air rear chamber. There is an air exhaust port 14 connected to the outside on the wall of the casing;

The motor 33 also includes a reduction mechanism 34, which is used to reduce the high speed of the motor to a low speed and then drive the heat exchange wheel to rotate at a slow speed. The input element of the reduction mechanism is fixed on the output shaft of the motor, and the output element is fixed on the heat exchange wheel. On the runner 22; the reduction mechanism 34 is a multi-stage gear reducer or a harmonic reducer, a worm gear reducer, and the multi-stage gear reducer includes a driving gear 341 fixed on the output shaft of the wind turbine motor, fixed in the same middle The driven gear 342 on the shaft, the rear stage driving gear 343 and the rear stage driven gear 344 fixed on the side center of the heat exchange runner.

Reduction mechanism 34 also can be replaced by independent deceleration motor 225, and now heat exchange runner 221 also comprises deceleration motor 225, coupling 226 and central shaft 21A that is fixedly connected with heat exchange runner, coupling and deceleration motor 225 The output shaft and the central shaft 21A are fixedly connected.

The manufacturing cost is a bit higher, but the requirements on the coaxiality between the motor 33 and the heat exchange runner can be greatly relaxed during installation, and independent speed regulation of the heat exchange runner can be realized. The reduction motor mechanism 34A includes a reduction motor 34A1 and a transmission part 34A2. The transmission part 34A2 is a coupling or a gear pair.

The filter heat exchanger 20 also includes a central shaft 21, which is installed coaxially with the motor 33, and the heat exchange wheel 22 rotates around it.

The heat exchange runner 22 is made of high molecular compound polyester fiber, glass fiber or other air filter materials with high surface area ratio and high porosity that have the functions of air permeability, water resistance, heat storage, heat exchange and filtration. When passing through, it conducts direct contact heat exchange with the air, and purifies and filters the air while exchanging heat.

Described wind wheel assembly 31 comprises a centrifugal fresh air wind wheel 31X, is placed in the fresh air front chamber 101 and the exhaust air front chamber 103, and its air inlet is arranged in the fresh air front chamber, makes the air inlet of the fresh wind wind wheel and the fresh air front chamber 101 communicates with each other, and its air outlet communicates with the air supply port 12. The outdoor fresh air introduced by the fresh air wind wheel establishes a certain positive air pressure indoors, forming a pressure difference between indoor and outdoor. Equivalent air exchange. This type of ventilator with a single wind wheel is suitable for rooms with better airtightness.

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Most poorly sealed rooms need to use two wind wheels to achieve equal exchange of air entering and leaving the room. The wind wheel assembly 31 includes a centrifugal fresh air wind wheel 31X and a centrifugal exhaust wind wheel 31P. The motor 33 is a double-shaft extension motor 33A, and the fresh air wind wheel 31X and the exhaust wind wheel 31P are respectively fixed on the output shafts protruding from both ends of the double-shaft extension motor; the exhaust wind wheel 31P is placed in the fresh air rear chamber 102 and the exhaust air rear chamber In 104, its air inlet is arranged in the air exhaust rear cavity, so that it communicates with the exhaust air rear cavity; the motor 33 is elongated, and the axial length of its motor casing can generally be greater than its diameter. The central shaft 21 of the filter heat exchanger 20 is integrated with the casing of the motor 33, and the heat exchange runner 22 is set on the casing of the motor and rotates around it with the support.

In order to prevent gas blow-by at the periphery of the heat exchange runner 22, a semi-circular air seal ring 224 can be fixedly installed in the fresh air rear chamber 102 and the exhaust air front chamber 103 respectively, and the air seal ring is made of thin sheet-shaped flexible wear-resistant material. It is fixed on the longitudinal diaphragm 15, and its free side covers the inlet side edge of the heat exchange runner. The longitudinal partition 15 is preferably divided into left and right halves through the center, and fixed on the inner wall of the casing respectively flush with the air inlet surface of the heat runner 22 .

In order to prevent outdoor rainwater or foreign matter from entering the machine from the air outlet when the machine is shut down, a sealed door 131 is provided in the fresh air outlet 13 and the air outlet 14 of the casing, and an air passage 13- 14. The sealed door is driven by a sealed motor 132 or an electromagnet, and is used to seal the outdoor air outlet and open the air passage 13-14 when the air exchange with the outdoor is stopped.

The fresh air has been preliminarily filtered and purified after passing through the heat exchange wheel of the filter heat exchanger. In order to adapt to places with higher requirements for air cleanliness, high-efficiency air must be installed before the fresh air inlet 31X1 of the fresh air wheel 31X of the wind wheel assembly. Filter 23. The surface of the high-efficiency air filter can be attached with photocatalyst, cold catalyst, activated carbon and other purification materials that absorb or kill germs.

the

This machine can also be used to cool the fresh air in summer, so only the water supply system 50 needs to be set in the machine to become a ventilator with purification and cooling functions. The water supply system 50 is used to humidify the indoor air to be discharged and/or supply water to the filter heat exchanger, so that the exhaust gas isenthalpically cooled to the wet bulb temperature, and at the same time exchange heat with it through the exhaust area 222 of the heat exchange wheel to cool it down When the temperature is close to the wet bulb temperature, the outdoor fresh air enters the fresh air zone 221 of the heat exchange wheel and then contacts with it for heat exchange. The indoor fresh air temperature is close to the wet bulb temperature of the indoor air, and the humidity content does not increase, so it gradually approaches the dew point. Here the water supply system 50 includes a water tank 51 placed at the bottom of the casing 10, a water pump 52 or a water supply valve 53, a water supply device 54, and a water pipe 55 connecting the water pump or water supply valve and the water supply device. The water supply device 54 is placed in the left front chamber 103; 52 is a submersible pump placed in the water tank 51, the replenishment valve 53 is an electric control water switch communicated with the water pipe, and the water supply device 54 includes one or more spray nozzles placed in the left front cavity or a cloth with a plurality of sprinkler holes. water pipe. The limit of air cooling for this configuration of ventilator is the dew point. It can replace the traditional compression air conditioner when used in areas with dry and hot air and low dew point, greatly reducing its manufacturing cost and energy consumption.

the

In hot flashes, that is, in areas with a high dew point, the above-mentioned ventilator still cannot provide sufficient cooling capacity, and a fresh air dehumidification system 60 needs to be added.

The fresh air dehumidification system 60 is a solution dehumidification system, including a hygroscopic solution circulation system 61, a dehumidifier 62 for absorbing moisture from the fresh air, and a concentrator 63 for dehydrating the hygroscopic solution itself; the dehumidifier 62 is placed in the front chamber 101 of the fresh air Between the fresh air area 221 of the heat exchange rotor 22 and the air supply port 12, the air inlet of the exhaust wind wheel 31P communicates with the fresh air rear chamber 102 with the fresh air passage 31P1; Mesh structure, made of corrosion-resistant air filter material;

The solution circulation system includes a liquid distribution tank 611 placed above the dehumidifier and concentrator, a liquid collection tank 612 below, an infusion pump 613, and a piping system 614 connecting the infusion pump with the liquid distribution tank and the liquid collection tank. The hygroscopic solution cooler 6141 in the water tank 51; the infusion pump pumps the hygroscopic solution to the liquid distribution tank, and the liquid distribution tank is sprinkled on the dehumidifier and the concentrator, and flows into the liquid collection tank after mass transfer with the air on the net. It flows into the cooler from the sump, exchanges heat with the water partition wall in the water tank, and then enters the infusion pump to form a continuous cycle.

The hygroscopic solution in the hygroscopic solution circulation system 61 is calcium chloride or lithium bromide aqueous solution;

The hygroscopic solution cooler 6141 is a shell-and-tube heat exchanger, which is composed of metal serpentine tubes with good thermal conductivity or multi-branch parallel plastic tubes submerged under the water surface of the water tank 51, and the two ends of the tubes are connected to the sump 612 and infusion pump 613;

When working, the outdoor fresh air passes through the filter heat exchanger, is cooled by the humidity, and then passes through the dehumidifier 62, and directly contacts and mass-transfers the hygroscopic solution sprinkled on the dehumidifier. The moisture contained in it is absorbed by the concentrated hygroscopic solution, and the humidity decreases Realize the second stage of refrigeration - isothermal dehumidification.

Another stream of outdoor air enters from the fresh air outlet, passes through the concentrator 63, and directly contacts and mass-transfers the hygroscopic solution sprinkled on the concentrator, evaporates the water in the solution, increases its own moisture content, and finally exits the outdoor air from the air outlet. , the solution is dehydrated in the mass transfer, and its concentration is correspondingly increased to realize the concentration process.

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If the outdoor temperature is not very high but the relative humidity is very high, the effect of the above-mentioned concentration process is just poor. In order to improve the concentration effect, an electric heater 633 can be set on the air inlet side of the concentrator 63 to reduce the concentration of the fresh air passing through the concentrator. The relative humidity thus improves the concentration effect. The electric heater 633 is a positive temperature coefficient ceramic electric heating assembly with metal fins or a metal electric heating tube with metal fins.

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The casing 10 is also provided with an electric control system 40 for controlling the operation of each electrical component in the ventilator, which includes a water level sensor 42 and a humidity sensor 43 or a temperature sensor 44;

The water level sensor is a float sensor, which is arranged in the water tank 51;

The humidity sensor or temperature sensor is arranged at the end of the exhaust area near the heat exchange wheel in the air exhaust rear cavity 104 .

the

The beneficial effects of the invention are:

The present invention provides a multifunctional rotary energy-saving ventilator, which has low energy consumption refrigeration and purification functions, no compressor, no Freon, simple structure, low power consumption, and overcomes various disadvantages of the prior art In many occasions, it can replace the existing professional air treatment equipment such as fresh air ventilators, compressed air conditioners, air purifiers, air conditioning fans, heaters, etc. It can be widely used in homes and public places, and has a high technical economy value.

the

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the present invention is further described:

Fig. 1 is a top view horizontal cross-sectional schematic diagram of embodiment 1,

Fig. 2 is a top view horizontal cross-sectional schematic diagram of embodiment 2,

Fig. 3 is a top view horizontal cross-sectional schematic diagram of embodiment 3,

Fig. 4 is the vertical cross-sectional schematic diagram of embodiment 3,

Fig. 5 is the enthalpy-humidity diagram of the fresh air refrigeration process of embodiment 3

Fig. 6 is the vertical cross-sectional schematic diagram of embodiment 4,

Fig. 7 is a top view horizontal cross-sectional schematic diagram of embodiment 4,

Fig. 8 is the enthalpy-humidity diagram of the fresh air refrigeration process of embodiment 4,

Fig. 9 is a top view horizontal cross-sectional schematic diagram of embodiment 5,

FIG. 10 is a schematic plan view of a horizontal cross-section of Embodiment 6. FIG.

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Detailed ways

Example 1

Embodiment 1 of the present invention is a multifunctional rotary energy-saving ventilator, as shown in FIG. 1 .

This example includes a casing 10, a filter heat exchanger 20 placed in the casing, and a fan device 30. A heat exchange chamber is arranged in the casing 10, and the filter heat exchanger 20 is a wheel-type heat storage filter heat exchanger, including The heat exchange wheel 22 rotates around its central axis during operation.

The filter heat exchanger 20 and the fan device 30 are placed together in the heat exchange chamber;

The casing 10 is provided with a longitudinal partition 15 and a transverse partition 16, which divide the heat exchange chamber in the casing into a fresh air front chamber 101, a fresh air rear chamber 102, an exhaust front chamber 103, and an exhaust rear chamber 104; There is a circular through hole in the middle of the longitudinal partition 15, and the heat exchange runner is placed in the through hole in the plane of the longitudinal partition 15; the heat transfer runner 22 is divided by the transverse partition 16 into a constantly shifting fresh air area 221 and an exhaust area. 222. The fresh air area falls into the fresh air chamber, that is, the fresh air front chamber and the rear chamber, and the exhaust air area falls into the exhaust chamber. When the heat exchange wheel rotates, each area continuously enters and exits the fresh air chamber and exhaust chamber. Then its various areas are also continuously and periodically switched between the fresh air area and the exhaust air area. There is an air supply port 12 connected to the interior on the casing wall of the fresh air front chamber, an air return port 11 connected to the interior on the casing wall of the exhaust front chamber, and a fresh air port 13 connected to the outdoor on the casing wall of the fresh air rear chamber. There is an air exhaust port 14 connected to the outside on the wall of the casing;

The filter heat exchanger 20 also includes a central shaft 21, which is installed coaxially with the motor 33, and the heat exchange wheel 22 rotates around it.

The heat exchange runner 22 is composed of a filter core and a frame. The filter core is an air filter material made of polymer compound polyester fiber, glass fiber or other high surface area ratio, water-resistant, heat storage, heat exchange and filtration functions. Made of high-porosity air filter material, when the air passes through, it conducts direct contact heat exchange with the air, and purifies and filters the air while exchanging heat.

The blower device includes a motor 33 and a wind wheel assembly 31 installed on the output shaft of the motor. The rotation axis of the heat exchange wheel 22 and the rotation axis of the motor 33 coincide with each other. The wind wheel assembly 31 includes a centrifugal fresh air wheel 31X and an exhaust wind wheel 31P. The motor 33 is a double-shaft extension motor 33A. on axis. The fresh air wind wheel is placed in the fresh air front chamber 101 and the exhaust air front chamber 103, and its air inlet is arranged in the fresh air front chamber, so that the air inlet of the fresh air wind wheel is connected with the fresh air front chamber 101, and its air outlet is connected with the air supply port 12 Pass. The exhaust air wheel 31P is placed in the fresh air rear chamber 102 and the exhaust air rear chamber 104, and its air inlet is arranged in the exhaust air rear chamber so that it communicates with the exhaust air rear chamber; the motor 33 is elongated, and its The axial length of the motor casing can generally be greater than its diameter.

The central shaft 21 of the filter heat exchanger 20 is integrated with the casing of the motor 33, and the heat exchange runner 22 is set on the casing of the motor and rotates around it with the support.

The motor 33 also includes a reduction mechanism 34, which is used to reduce the high speed of the motor to a low speed and then drive the heat exchange wheel to rotate at a slow speed. The input element of the reduction mechanism is fixed on the output shaft of the motor, and the output element is fixed on the heat exchange wheel. On the runner 22; the reduction mechanism 34 is a multi-stage gear reducer or a harmonic reducer, a worm gear reducer, and the multi-stage gear reducer includes a driving gear 341 fixed on the output shaft of the wind turbine motor, fixed in the same middle The driven gear 342 on the shaft, the rear stage driving gear 343 and the rear stage driven gear 344 fixed on the side center of the heat exchange runner.

In order to prevent air blowing around the heat exchange runner 22, a semi-circular air sealing ring 224 is fixedly installed in the fresh air rear chamber 102 and the exhaust air front chamber 103 respectively, and the air sealing ring is made of a thin sheet-shaped flexible wear-resistant material. It is fixed on the medial diaphragm 15, and its free edge covers the inlet side edge of the heat exchange wheel. The medial partition 15 is divided into left and right halves through the center, and are respectively fixed on the inner wall of the casing flush with the air inlet surface of the heat exchange runner 22 .

The fresh air has been preliminarily filtered and purified after passing through the heat exchange wheel of the filter heat exchanger. In order to adapt to places with higher requirements for air cleanliness, such as wards and clean rooms, fresh air in the fresh air wheel 31X of the wind wheel assembly is required. Set the high-efficiency air filter 23 before the import 31X1. High-efficiency air filter, referred to as HEPA, can filter out more than 99.9% of 0.3μm dust, and its surface can also be attached with photocatalyst, cold catalyst, activated carbon and other purification materials that kill germs or absorb and decompose odors.

When the machine is working, the indoor air enters from the air return port, passes through the exhaust area of the heat exchange wheel, and exchanges heat with it. After the heat exchange, the temperature on the intake side is close to the air temperature in the air. on the other hand. The outdoor fresh air enters from the fresh air outlet, passes through the fresh air area of the heat exchange wheel, and exchanges heat with it. After heat exchange, the air intake side absorbs the heat of the fresh air and heats up to the temperature close to the outdoor air temperature, while the air outlet side is Last week, the temperature of the air intake side of the exhaust area was close to the indoor air temperature, so the temperature of the fresh air was close to that of the outlet side of the fresh air area of the heat exchange rotor, that is, it was close to the indoor temperature. During the entire heat exchange process, the temperature of the heat exchange rotor Close to the indoor temperature from the indoor side, and close to the outdoor fresh air temperature from the outside, maintaining a certain temperature gradient. It is because of this gradient that the outdoor fresh air gradually changes from the outdoor temperature to the indoor temperature during the heat exchange process, achieving the purpose of updating the indoor air but keeping the temperature basically unchanged, that is, recovering the air carried by the exhausted indoor air during ventilation. Air conditioning can. After the fresh air passes through the heat exchange wheel with filtering function and the high-efficiency air filter air, the required purification purpose is also achieved. This embodiment is an equipment for heat preservation, ventilation and fresh air purification.

the

Example 2

Embodiment 2 of the present invention is a relatively simplified multifunctional rotary energy-saving ventilator, as shown in FIG. 2 . This example is basically the same as Example 1, the only difference is that the exhaust wind wheel is canceled, only a fresh wind wheel 31X is used, and the corresponding motor driving its rotation is a flat motor 33A with a single shaft extension. the

The heat exchange wheel 22 of the filter heat exchanger does not need to be set on the motor casing, and its central shaft 21 can be separated from the motor and fixedly connected with the heat exchange wheel. During installation, their coaxiality requirements can be greatly relaxed or even no coaxiality is required. . The deceleration mechanism 34 that drives the heat exchange runner is replaced by an independent deceleration motor 225. At this time, the heat exchange runner 221 also includes a deceleration motor 225, a shaft coupling 226 and a central shaft 21A fixedly connected with the heat exchange runner. The gear is fixedly connected with the output shaft of the reduction motor 225 and the central shaft 21A. Certainly the reduction motor can also be transmitted through the gear pair and the central shaft 21, the driving pinion of the gear pair is fixed on the output shaft of the reduction motor, and the driven gear is fixed on the heat exchange runner 22 or its central shaft. Although the manufacturing cost of the independent deceleration motor mechanism is a little higher, it can realize the independent speed regulation of the heat exchange runner.

In order to increase the air intake area of the fresh air rotor and reduce the wind resistance of the high-efficiency air filter, the semicircle of the air inlet of the fresh wind rotor in the front cavity of the exhaust air is also opened to place the high-efficiency air filter, and the semicircular pheasant surface is used to The partition 311 is separated from the exhaust front chamber.

In addition, in order to facilitate wall installation, the fresh air outlet 13 and the exhaust air outlet 14 lead to the outside from the same wall hole. In this example, they are close together, and then the fresh air pipe and the exhaust pipe are separated after extending out of the wall. a certain distance.

In order to prevent outdoor rainwater or foreign matter from entering the machine from the air outlet when the machine is shut down, a sealed door 131 is provided in the fresh air outlet 13 and the air exhaust outlet 14 of the casing of the machine, and an air passage 13-14 is also provided between the fresh air outlet and the air outlet. . Sealed door is driven by sealed motor 132 or electromagnet, and when sealed motor rotates counterclockwise, sealed door 131 opens new air outlet, and seals air channel 13-14 simultaneously, and sealed door 131 seals new, air outlet when turning clockwise . Open the air channel 13-14, the fresh air outlet and the exhaust air outlet are directly connected in the machine, and the indoor air coming out of the heat exchange runner enters the machine from the new air outlet and is sent back into the room. Da.

The airtight door can also be driven by an electromagnet, which has a slightly lower cost but a slightly higher noise.

the

When the machine is working, the outdoor fresh air introduced by the fresh air wheel creates a certain positive air pressure indoors, forming a pressure difference between indoor and outdoor. , forming an equal amount of air exchange in and out. This type of ventilator with a single wind wheel is suitable for rooms with better airtightness.

the

Example 3

Embodiment 3 of the present invention is a multifunctional rotary energy-saving ventilator with refrigeration function, as shown in FIGS. 3 , 4 and 5 . The structure of this machine is basically the same as Example 1, the difference is that the water supply system 50 is added to become a ventilator with purification and refrigeration functions, which is used to purify and refrigerate indoor air in places where there is no air conditioner or insufficient air conditioning in summer .

The water supply system 50 is used to humidify the indoor air to be discharged and/or supply water to the filter heat exchanger, so that the exhaust gas isenthalpically cooled to the wet bulb temperature, and at the same time exchange heat with it through the exhaust area 222 of the heat exchange wheel to cool it down When the temperature is close to the wet bulb temperature, the outdoor fresh air enters the fresh air zone 221 of the heat exchange wheel and then contacts with it for heat exchange. The indoor fresh air temperature is close to the wet bulb temperature of the indoor air, and the humidity content does not increase, so it gradually approaches the dew point.

Here the water supply system 50 includes a water tank 51 placed at the bottom of the casing 10, a water pump 52 or a water supply valve 53, a water supply device 54, and a water pipe 55 connecting the water pump or water supply valve and the water supply device. The water supply device 54 is placed in the left front chamber 103; 52 is a submersible pump placed in the water tank 51, the replenishment valve 53 is an electric control water switch communicated with the water pipe, and the water supply device 54 includes one or more spray nozzles placed in the left front cavity or a cloth with a plurality of sprinkler holes. water pipe. The limit of air cooling for this configuration of ventilator is the dew point. It can replace the traditional compression air conditioner when used in areas with dry and hot air and low dew point, greatly reducing its manufacturing cost and energy consumption.

In addition, in order to reduce the wind resistance of the high-efficiency air filter, the same semicircular partition plate 311 as in embodiment 2 is used to separate from the air exhaust front chamber to increase the air intake area of the fresh air rotor.

Another difference from Embodiment 13 is that the rear driven gear 344 of the reduction mechanism 34 is changed from an internal gear to an external gear, which is only a variety of schematic structural changes, and there is no substantial change.

When the machine is working in the cooling condition, the state change process of the indoor air is shown in Figure 5. Figure 5 is an enthalpy-humidity diagram of the cooling process of air under a typical working condition. In the figure, the state point ai is the state of the indoor air, and bi is the indoor air in the state of ai, which is humidified in the ventilator to a wet bulb temperature and a relative humidity of 95. %status. The indoor air cooling process is as follows:

1) The state point a1 is the indoor air condition before starting up, which is the same as the outdoor, and its dry bulb temperature, enthalpy, and moisture content are 45.0°C, 76.4 kJ/kg, and 12.0 g/kg, respectively.

2) After starting up, the indoor air to be discharged in the state of a1 is humidified to the wet bulb temperature in the filter heat exchanger, and the state changes to point b1, and its dry bulb temperature, relative humidity, enthalpy, and moisture content are respectively 25.7°C , 95%, 76.4 kJ/kg, 19.8 g/kg. At the same time, the temperature of the filter heat exchanger in direct contact with it is also close to 25.7°C;

3) The outdoor air in state a1 enters the filter heat exchanger, directly contacts with it for heat exchange and other wet cooling, the temperature drops to close to 25.7°C, enters the room to absorb the heat load in the room and becomes state a2, the temperature is about 31°C, enthalpy 62.0 kJ/kg, moisture content unchanged to 12.0 g/kg;

4) The indoor air in the state a2 is discharged outside through the filter heat exchanger, and is enthalpy humidified in the filter heat exchanger to the wet bulb temperature, the state changes to point b2, and the temperature of the exhaust and filter heat exchanger drops to about 21.9°C ;

5) The outdoor air in state a1 enters the filter heat exchanger, directly contacts with it for heat exchange and other wet cooling, the temperature drops to close to 21.9°C, enters the room to absorb the heat load in the room and becomes state a3, the temperature is about 25°C, enthalpy is 55.8 kJ/kg, and the moisture content remains unchanged at 12.0 g/kg;

6) In such a continuous cycle, the indoor air is continuously cooled by isohumidity, and the state point continuously moves down along the isohumidity line to points a4, a5... until it reaches its limit state - the dew point.

The above point ai is the state change trajectory of the indoor air when the ventilator is working, ai starts from a1 and moves down along the isohumidity line until it finally approaches the dew point. The movement trajectory of ai is composed of a large number of dense discrete points. The larger the air supply volume of the ventilator, the more the temperature is cooled in each cycle, and the higher the dispersion. Several state points in the example are optional in-process state points for analysis.

Because the relative humidity exceeds 70%, people will start to feel uncomfortable, so the state a4 can be taken as the ideal working point. The initial temperature of this working condition has reached a very high point of 45.0°C, but because the moisture content is only 12.0 g/kg, it can still reach an ideal state after being treated by this machine.

Generally speaking, under the climatic conditions where the dew point is lower than 22°C or the moisture content is lower than 17.0 g/kg, the air conditioning effect can be obtained by using this machine with a temperature of 26°C and a relative humidity of about 70%, which can replace the compression air conditioner , this condition can be met in the highest temperature season in most areas of our country.

the

Example 4

Embodiment 4 of the present invention is a multifunctional rotary energy-saving ventilator with secondary refrigeration function, as shown in FIGS. 6 , 7 and 8 . In this example, on the basis of example 3, a set of fresh air dehumidification system 60 is added, and the fresh air cooled by isohumidity is dehumidified again to realize secondary refrigeration of isothermal dehumidification, so as to further increase the cooling capacity, so that it can be used in hot flashes. That is, areas with higher dew points replace compression air conditioners.

The fresh air dehumidification system 60 is a solution dehumidification system, including a hygroscopic solution circulation system 61, a dehumidifier 62 for absorbing moisture from the fresh air, and a concentrator 63 for dehydrating the hygroscopic solution itself; the dehumidifier 62 is placed in the front chamber 101 of the fresh air Between the fresh air area 221 of the heat exchange rotor 22 and the air supply port 12 (or the fresh air wheel), the air inlet of the exhaust wind wheel 31P communicates with the fresh air rear cavity 102 through the fresh air channel 31P1; the concentrator 63 is placed at the fresh air channel 31P1 , they are all air filter structures, made of corrosion-resistant air filter materials;

The solution circulation system includes a liquid distribution tank 611 placed above the dehumidifier and concentrator, a liquid collection tank 612 below, an infusion pump 613, and a piping system 614 connecting the infusion pump with the liquid distribution tank and the liquid collection tank. The hygroscopic solution cooler 6141 in the water tank 51; the infusion pump pumps the hygroscopic solution to the liquid distribution tank, and the liquid distribution tank is sprinkled on the dehumidifier and the concentrator, and flows into the liquid collection tank after mass transfer with the air on the net. It flows into the cooler from the sump, exchanges heat with the water partition wall in the water tank, and then enters the infusion pump to form a continuous cycle.

The hygroscopic solution in the hygroscopic solution circulation system 61 is calcium chloride or lithium bromide aqueous solution;

The hygroscopic solution cooler 6141 is a shell-and-tube heat exchanger, which is composed of metal serpentine tubes with good thermal conductivity or multi-branch parallel plastic tubes submerged under the water surface of the water tank 51, and the two ends of the tubes are connected to the sump 612 and infusion pump 613;

When working, the outdoor fresh air passes through the filter heat exchanger, is cooled by the humidity, and then passes through the dehumidifier 62, and directly contacts and mass-transfers the hygroscopic solution sprinkled on the dehumidifier. The moisture contained in it is absorbed by the concentrated hygroscopic solution, and the humidity decreases Realize the second stage of refrigeration - isothermal dehumidification.

Another stream of outdoor air enters from the fresh air outlet, passes through the concentrator 63, and directly contacts and mass-transfers the hygroscopic solution sprinkled on the concentrator, evaporates the water in the solution, increases its own moisture content, and finally exits the outdoor air from the air outlet. , the solution is dehydrated in the mass transfer, and its concentration is correspondingly increased to realize the concentration process.

If the outdoor temperature is not very high but the relative humidity is very high, the effect of the above-mentioned concentration process is just poor. In order to improve the concentration effect, an electric heater 633 can be set on the air inlet side of the concentrator 63 to reduce the concentration of the fresh air passing through the concentrator. The relative humidity thus improves the concentration effect. The electric heater 633 is a positive temperature coefficient ceramic electric heating assembly with metal fins or a metal electric heating tube with metal fins.

the

An electric control system 40 is also provided in the casing 10 for controlling the operation of each electrical component in the ventilator, which includes a circuit board, a water level sensor 42 and a humidity sensor 43 or a temperature sensor 44 .

The water level sensor is a float type sensor, which is installed in the water tank 51. When the water level of the water tank reaches the upper limit of the set water level, the sensor sends an electric signal of "full water" to instruct the electronic control system 40 to close the replenishment valve 53. When the water level of the water tank reaches the set upper limit When the water level is at the lower limit, the sensor sends an electrical signal of "water shortage" to instruct the electronic control system 40 to turn off the water pump 52 and open the replenishment valve 53 .

The humidity sensor or temperature sensor is arranged in the end of the exhaust area near the heat exchange rotor in the air exhaust chamber 104, that is, the position where the rotor is about to transfer from the exhaust area to the fresh air area, and the water supply is far away from here. When the humidity or temperature of the indoor air that is about to be discharged outside through the end of the exhaust area of the heat exchange wheel begins to change, the electronic control system 40 issues an instruction to change the speed of the heat exchange wheel 22 . If the humidity of the exhaust gas will start to decrease, or the temperature will start to rise, it means that the exhaust area of the heat exchange rotor has been completely dried by the exhaust air before turning into the fresh air area, and the speed of the heat exchange rotor should be increased appropriately, otherwise it should be appropriate reduce.

the

When the machine is working in the cooling condition, the state change process of the indoor air is shown in Figure 10. Figure 8 shows the enthalpy-humidity diagram of the air refrigeration process under a typical working condition. In this working condition, the outdoor air has a dry bulb temperature of 40°C, a dew point of 27°C, a moisture content of about 22.7g/kg, and an enthalpy of about 98.8kJ/kg. It is regarded as the state with the highest humidity and heat in the country. Under this working condition, the indoor air cooling process is as follows:

1) Start-up: State point a1 is the initial condition of the indoor air before starting up, which is the same as outdoor: dry bulb temperature is 40°C, dew point is 27°C, moisture content is about 22.7g/kg, relative humidity is 48.3%, and enthalpy is about 98.8kJ/kg ;

2) State a1—b1: After starting up, the indoor air to be discharged in state a1 is isenthalpic humidified to the wet bulb temperature in the filter heat exchanger and then discharged outside, and its state changes to point b1, and its dry bulb temperature is 30.5°C, which is relatively Humidity 95%. At the same time, the temperature of the filter heat exchanger in direct contact with it also drops to close to 30.5°C;

3) State a1—a2: The outdoor fresh air in state a1 enters the filter heat exchanger, directly contacts with it for heat exchange and waits for wet cooling, until the outlet temperature of the filter heat exchanger drops to close to 31°C and is slightly higher than point b1, containing moisture The amount is still 22.7g/kg, and changes to state a2,

Another stream of outdoor fresh air in the state of a1 passes through the regeneration area of the dehumidification device, absorbs the moisture in the hygroscopic solution to concentrate it, and then discharges it from the air outlet. The concentration of the concentrated solution depends on the relative humidity of the air and the properties of the solution. For calcium chloride hygroscopic solution, when the relative humidity of the air is 48.3%, the concentration of the solution can reach up to 43%;

4) State a2—c2: The fresh air in state a2 from the filter heat exchanger enters the dehumidification area of the dehumidification device, and is absorbed by the hygroscopic solution. The moisture content drops to about 15g/kg, and the temperature rises slightly to It is about 32°C, it is sent into the room to absorb the heat in the room, and then the temperature rises to 33°C, and it becomes state c2. The dehumidification capacity of the fresh air depends on the concentration of the hygroscopic solution, and the concentration of the hygroscopic solution depends on the relative humidity of the air mass transfer with it, from The concentrated solution and relative humidity in the regeneration area are 48.3%. The concentration of the outdoor air after mass transfer is 43%. The minimum relative humidity of the fresh air dehumidified by it should also be 48.3%, so the moisture content of the fresh air can be reduced to about 15.8g/ kg, the relative humidity drops to 50%;

5), state c2—b2: the indoor air to be discharged in state c2 is isenthalpically humidified to the wet bulb temperature in the filter heat exchanger and then discharged outdoors, and its state becomes point b2, with a dry bulb temperature of 25°C and a relative humidity of 95 %. At the same time, the temperature of the filter heat exchanger in direct contact with it also drops to close to 25°C

6), state a1-a3: the outdoor fresh air in state a1 enters the filter heat exchanger, directly contacts with it for heat exchange and waits for wet cooling, until the outlet temperature of the filter heat exchanger drops to wet bulb temperature 27.8 ℃, relative humidity 95%, Change to state a3;

7) State a3-c3: The fresh air in state a3 coming out of the filter heat exchanger enters the dehumidification area of the dehumidification device, and the moisture contained in it is absorbed by the hygroscopic solution, and the moisture content drops to about 12.5g/kg, and the relative humidity drops to 50%, the temperature rises slightly to about 28°C, and after being sent into the room to absorb the heat in the room, the temperature rises to 29°C and becomes state c3;

8) State c3—b3: The indoor air to be discharged in state c3 is isenthalpically humidified to the wet bulb temperature in the filter heat exchanger and then discharged outdoors, and its state becomes point b3, with a dry bulb temperature of 21.7°C and a relative humidity of 95 %. At the same time, the temperature of the filter heat exchanger in direct contact with it also drops to close to 21.7°C

9), state a1-a4: the outdoor fresh air in state a1 enters the filter heat exchanger, directly contacts with it for heat exchange and waits for wet cooling, until the outlet temperature of the filter heat exchanger drops to the wet bulb temperature of 27.8 ℃, and continues to be close to the temperature of 21.7 The filter heat exchanger at ℃ is in contact with heat exchange, and the temperature is lowered to 24 ℃ along the wet bulb temperature line, and the relative humidity is 95%, and it becomes state a4;

10) State a4—c4: The fresh air in state a4 coming out of the filter heat exchanger enters the dehumidification area of the dehumidification device, and is absorbed by the hygroscopic solution, the moisture content drops to about 10.5g/kg, and the dew point is about 14.8 °C, the enthalpy is about 53.0kJ/kg. The temperature rises slightly to 26°C, and the relative humidity drops to 50%, reaching a comfortable temperature and humidity for the human body. At this time, the state c4 can be set as the balance point for the ventilator to work.

The above refrigeration process is an ideal process. Only when the whole system parameters, structural design, and manufacturing are in the best state can this effect be achieved, but the actual system close to this effect can already meet the most humid and hot climate conditions in most parts of the country. Refrigeration needs.

the

Example 5

Example 5 of the present invention has the same internal structure as Example 1, except that the positions of the four air outlets communicating with the outside of the machine are different. 13 are arranged on the other side of the casing opposite to them, so as to facilitate installation in some applications, as shown in FIG. 9 . This example only illustrates that the installation positions of each tuyere can be arranged arbitrarily according to actual needs, and is not limited to the layout shown in the drawings of the above embodiments.

the

Example 6

Embodiment 6 of the present invention is shown in Figure 10, and its internal structure is exactly the same as that of Example 4. The only difference is that a sealed door 131 is added in the fresh air port 13 and the air exhaust port 14 of the casing of this example. Offer air channel 13-14. The airtight door 131 includes a fresh air airtight room 131X and an exhaust air airtight door 131P. They are driven by a canned motor 132 via a crank connecting rod. Its principle of action is the same as the airtight door of example 2.

The sealed motor 132 can also be replaced by an electromagnet.

the

All of the above examples can be installed as window type, wall type, or platform type. If there is enough space on the ceiling, it is also a good choice to install it inside the ceiling. If the corrugated pipes are connected to the fresh air outlet and exhaust outlet for mobile installation, it is more suitable for the habits of countries such as Europe and the United States.

Claims (10)

1. A multi-functional rotary energy-saving ventilator, including a casing (10), a heat exchanger and a fan device (30) placed in the casing, and a heat exchange chamber inside the casing (10). Features: The heat exchanger is a filter heat exchanger (20) with air filtration function, which is a wheel-type heat storage filter heat exchanger, including a heat exchange wheel (22) that rotates around its central axis during operation; The filter heat exchanger (20) and the fan device (30) are placed together in the heat exchange chamber; The blower device includes a motor (33) and a wind wheel assembly (31) installed on the output shaft of the motor, and the rotation axis of the heat exchange runner (22) and the rotation axis of the motor (33) coincide with each other. 2. The multifunctional rotary energy-saving ventilator according to claim 1, characterized in that: The casing (10) is provided with a longitudinal partition (15) and a transverse partition (16), which divide the heat exchange chamber in the casing into a fresh air front chamber (101), a fresh air rear chamber (102) and an exhaust air chamber. The front cavity (103), the exhaust rear cavity (104); there is a circular through hole in the middle of the longitudinal partition (15), and the heat exchange runner is placed in the through hole in the plane of the longitudinal partition (15); the heat transfer runner (22) It is divided into fresh air area (221) and exhaust area (222) which are continuously transferred by the transverse partition (16); there is an air supply port (12) connected to the room on the wall of the fresh air front chamber, and the exhaust air front chamber machine There is a return air outlet (11) connected to the indoor on the casing wall, a fresh air outlet (13) connected to the outdoor on the casing wall of the fresh air rear chamber, and an exhaust outlet (14) connected to the outdoor on the casing wall of the exhaust rear chamber; The motor (33) also includes a deceleration mechanism (34), which is used to reduce the high speed of the motor to a low speed and then drive the heat exchange wheel to rotate at a slow speed. The input element of the deceleration mechanism is fixed on the output shaft of the motor, and the output element fixed on the heat exchange runner (22); the reduction mechanism (34) is a multi-stage gear reducer or a harmonic reducer, a worm gear reducer, and the multi-stage gear reducer includes a motor fixed on the output shaft of the wind turbine motor The driving gear (341), the driven gear (342) fixed on the same intermediate shaft, the rear stage driving gear (343) and the rear stage driven gear (344) fixed on the side center of the heat exchange runner. 3. The multifunctional rotary energy-saving ventilator according to claim 1, characterized in that: The filter heat exchanger (20) also includes a central shaft (21), which is coaxially installed with the motor (33), and the heat exchange wheel (22) rotates around it; The heat exchange runner (22) is made of polymer compound polyester fiber, glass fiber or other air filter materials with high surface area ratio and high porosity that have the functions of air permeability, water resistance, heat storage, heat exchange and filtration , When the air passes through, it conducts direct contact heat exchange with the air, and purifies and filters the air while exchanging heat. 4. The multifunctional rotary energy-saving ventilator according to claim 1, characterized in that: The wind wheel assembly (31) includes a centrifugal fresh air wheel (31X), which is placed in the fresh air front chamber (101) and the exhaust air front chamber (103), and its air inlet is set in the fresh air front chamber, so that the fresh air The air inlet of the wheel is connected with the fresh air front cavity (101), and its air outlet is connected with the air supply port (12); The heat exchange runner (22) also includes a reduction motor (225), a shaft coupling (226) and a central shaft (21A) fixedly connected to the heat transfer rotation wheel, and the output shaft of the coupling and the reduction motor (225) It is fixedly connected with the central shaft (21A). 5. The multifunctional rotary energy-saving ventilator according to claim 1 or 2, characterized in that: The wind wheel assembly (31) includes a centrifugal fresh air wheel (31X) and a centrifugal exhaust wind wheel (31P), the motor (33) is a double shaft extension motor (33A), and the fresh air wheel (31X ) and the exhaust wind wheel (31P) are respectively fixed on the output shaft protruding from both ends of the double-shaft extension motor; the exhaust wind wheel (31P) is placed in the fresh air rear chamber (102) and the exhaust air rear chamber (104), Its air inlet is set in the air exhaust rear cavity, so that it communicates with the exhaust air rear cavity; the motor (33) is slender; The central axis (21) of the filter heat exchanger (20) is combined with the casing of the motor (33), and the heat exchange wheel (22) is sleeved on the casing of the motor and rotates around it as a support. 6. The multifunctional rotary energy-saving ventilator according to claim 1, characterized in that: In the fresh air rear cavity (102) and the exhaust front cavity (103), semi-circular air sealing rings (224) are fixedly installed respectively. The air sealing rings are made of thin sheet-shaped flexible wear-resistant materials and fixed On the medial diaphragm (15), its free edge covers the edge of the heat exchange runner; A high-efficiency air filter (23) is provided before the fresh air inlet (31X1) of the fresh air rotor (31X) of the wind wheel assembly. 7. The multifunctional rotary energy-saving ventilator according to claim 1, characterized in that: The multi-functional rotary energy-saving ventilator also includes a water supply system (50), which is used for humidifying the indoor air to be discharged and/or supplying water to the filter heat exchanger, so that the exhaust gas is enthalpy cooled to humid Bulb temperature, it comprises the water tank (51) that places casing (10) bottom, water pump (52) or filling valve (53), water supply device (54) and the water pipe (55) that connects water pump or filling valve and water supply device, The water supply device (54) is placed in the left front chamber (103); the water pump (52) is a submersible pump placed in the water tank (51), and the replenishment valve (53) is an electronically controlled water switch connected with the tap water pipe, and the water supply device (54 ) includes one or more spray nozzles placed in the left front chamber or a water distribution pipe with multiple sprinkler holes. 8. The multifunctional rotary energy-saving ventilator according to claim 1, characterized in that: The ventilator also includes a fresh air dehumidification system (60); The fresh air dehumidification system (60) is a solution dehumidification system, including a hygroscopic solution circulation system (61), a dehumidifier (62) for absorbing moisture from the fresh air, and a concentrator (63) for dehydrating the hygroscopic solution itself; the dehumidifier Placed between the filter heat exchanger and the air outlet (12), the concentrator is placed in the outdoor air passage (18), they are all air filter mesh structures, made of corrosion-resistant air filter materials; the solution circulation system includes Place the liquid distribution tank (611) above the dehumidifier and the concentrator, the liquid collection tank (612) below, the infusion pump (613) and the piping system (614) connecting the infusion pump to the liquid distribution tank and the liquid collection tank. The system includes a hygroscopic solution cooler (6141) placed in the water tank (51); the infusion pump pumps the hygroscopic solution to the liquid distribution tank, and the liquid distribution tank is sprinkled on the dehumidifier and the concentrator, and the mass transfer on the net and air Then it flows down into the liquid collection tank, from the liquid collection tank into the cooler and the water partition wall in the water tank to exchange heat, and then enters the infusion pump, forming a continuous cycle; The hygroscopic solution in the hygroscopic solution circulation system (61) is calcium chloride or lithium bromide aqueous solution; The hygroscopic solution cooler (6141) is a shell-and-tube heat exchanger, which is composed of metal serpentine tubes with good thermal conductivity or multi-branch parallel plastic tubes submerged under the water surface of the water tank (51), and the two ends of the tubes are connected Fluid sump (612) and infusion pump (613); The outdoor fresh air passes through the filter heat exchanger and then passes through the dehumidifier (62), directly contacting with the moisture-absorbing solution sprayed on the dehumidifier for mass transfer, the moisture contained in it is absorbed by the concentrated moisture-absorbing solution, and the humidity decreases to refrigerate; Another stream of outdoor air enters the outdoor air channel (18) from the fresh air outlet, passes through the concentrator (63), and directly contacts and mass-transfers the moisture-absorbing solution sprinkled on the concentrator, evaporates the water in the solution, and increases the moisture content. Finally, it is discharged from the air outlet to the outside, and the solution is dehydrated in the mass transfer, and its concentration is correspondingly increased; The dehumidifier (62) is placed between the fresh air area (221) of the heat exchange rotor (22) and the air supply port (12) in the fresh air front chamber (101), and the air inlet of the exhaust fan (31P) is connected to the fresh air rear chamber (102) communicate with the fresh air passage (31P1); the concentrator (63) is placed at the fresh air passage (31P1). 9. The multifunctional rotary energy-saving ventilator according to claim 1 or 8, characterized in that: The air inlet side of the concentrator (63) is also provided with an electric heater (633), and the electric heater (633) is a positive temperature coefficient ceramic electric heating assembly with metal fins or a metal electric heating tube with metal fins. 10. The multifunctional rotary energy-saving ventilator according to claim 1 or 2, characterized in that: The casing (10) is also equipped with an electric control system (40) for controlling the operation of the electrical components in the ventilator, which includes a water level sensor (42) and a humidity sensor (43) or a temperature sensor ( 44); the water level sensor is a float sensor, which is arranged in the water tank (51); The humidity sensor or temperature sensor is set at the end of the exhaust area near the heat exchange wheel in the exhaust rear chamber (104); A sealed door (131) is arranged inside the fresh air outlet (13) and the exhaust outlet (14) of the casing, and an air channel (13-14) is arranged between the fresh air outlet and the exhaust outlet, and the sealed door uses a sealed motor ( 132) or driven by an electromagnet, it is used to seal the outdoor air outlet and open the air passage (13-14) when the air exchange with the outdoor is stopped.