CN107131567B - Air purification system and control method thereof - Google Patents

Air purification system and control method thereof Download PDF

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Publication number
CN107131567B
CN107131567B CN201610109072.9A CN201610109072A CN107131567B CN 107131567 B CN107131567 B CN 107131567B CN 201610109072 A CN201610109072 A CN 201610109072A CN 107131567 B CN107131567 B CN 107131567B
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China
Prior art keywords
air
purification system
control device
outdoor
fresh
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CN201610109072.9A
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CN107131567A (en
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陈祖响
陈华
姚君
薛春雷
李庆波
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Daikin Industries Ltd
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Daikin Industries Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

An air purification system and a control method thereof are economical and have various operation modes, and can meet the requirement of variable air environment. The air purification system comprises an air purification device and a control device for controlling the air purification device, wherein the air purification device comprises a shell with a fresh air inlet, an air supply outlet, an air return inlet and an air outlet, an air supply path from the fresh air inlet to the air supply outlet and an air exhaust path from the air return inlet to the air outlet are arranged in the shell, an air supply fan and an air exhaust fan are respectively arranged in the air supply path and the air exhaust path, the air purification system also comprises an air purification assembly, wherein a bypass path with one end connected with the air return inlet and the other end connected with the air supply path is also arranged in the shell, a first air valve is arranged at the position close to the fresh air inlet in the air supply path, and a second air valve is arranged in the air exhaust path and can be switched to a state of enabling the bypass path to be communicated with the air return inlet and/or enabling the air exhaust path to.

Description

Air purification system and control method thereof
Technical Field
The invention relates to an air purification system and a control method thereof.
Background
For people who have been in a closed indoor environment (i.e., an air conditioning target space) for a long time, the quality of indoor air directly affects their health, and various air purifiers capable of improving the quality of indoor air have been developed.
However, the conventional air cleaner generally can only achieve internal circulation of indoor air, but cannot introduce outdoor air (i.e., air outside the space to be air-conditioned, generally called fresh air) into the room and discharge dirty air to the outside of the room, and has a relatively single function.
In addition, various conditions often appear in people's life, for example, the difference in temperature is too big between indoor and outdoor, the peculiar smell is heavier in the room, the virus is high, haze is serious etc. under these circumstances, the demand to the air quality in people's life can not be satisfied to simple drawing new trend, exhaust air and inner loop.
Disclosure of Invention
To solve the above problems, the present invention provides an air purification system that is economical, has multiple operation modes, and can satisfy a variable air environment, and a control method thereof.
In order to achieve the above object, a first aspect of the present invention provides an air purification system including an air purification device and a control device that controls the air purification device, the air purification device including a casing having a fresh air port, an air supply port, a return air port, and an air exhaust port, an air supply path from the fresh air port to the air supply port, and an air exhaust path from the return air port to the air exhaust port being provided in the casing, an air supply fan and an air exhaust fan being provided in the air supply path and the air exhaust path, respectively, the air purification system further including an air purification unit that purifies air supplied to an air conditioning target space, wherein a bypass path is further provided in the casing, one end of the bypass path is connected to the return air port, the other end of the bypass path is connected to the air supply path, and a position closer to the fresh air port than a junction of the bypass path and the air supply path is provided in the air supply path And a first air valve is arranged and can control the circulation state of fresh air in the air supply path, and a second air valve is arranged in the air exhaust path and can be switched to a state of communicating the bypass path with the air return opening and/or communicating the air exhaust path with the air return opening.
Here, the "second air flap is switchable to a state in which the bypass path is in communication with the return air inlet and/or the exhaust path is in communication with the return air inlet" means that the second air flap is switchable to the following three states: the state that the return air inlet is only communicated with the bypass path; the state that the return air inlet is only communicated with the air exhaust path; the air return opening is communicated with the bypass path and the exhaust path at the same time.
According to the air purification system of the first aspect of the present invention, the air purification system includes the bypass path, the first air valve and the second air valve, and the states of the first air valve and the second air valve and the operation of the blowing fan and the exhaust fan are controlled by using the control device, and the air purification system can switch between a plurality of operation modes, such as a fresh air + exhaust mode, a fresh air + internal circulation + exhaust mode, an internal circulation mode, a fresh air mode, an exhaust mode, a fresh air positive pressure mode, a fresh air negative pressure mode, and the like, instead of simply performing fresh air introduction, blow-down and internal circulation, so that the air quality requirements of users under different working conditions can be met.
An air purification system according to a second aspect of the present invention is the air purification system according to the first aspect of the present invention, wherein the casing includes a plurality of wall surfaces, and at least two of the fresh air inlet, the supply air outlet, the return air inlet, and the exhaust air outlet are respectively provided on at least any two of the plurality of wall surfaces.
The air purification system according to a third aspect of the present invention is the air purification system according to the first aspect of the present invention, wherein a plurality of fresh air inlets, a plurality of supply air outlets, a plurality of return air inlets, and a plurality of exhaust air outlets are provided.
An air purification system according to a fourth aspect of the present invention is the air purification system according to the first aspect of the present invention, wherein the plurality of air return openings are provided, and the plurality of air return openings are provided on a same wall surface or different wall surfaces of the housing, and/or the plurality of air supply openings are provided, and the plurality of air supply openings are provided on a same wall surface or different wall surfaces of the housing.
According to the air purification systems of the second aspect to the fourth aspect of the present invention, different installation requirements such as hoisting, wall-hanging installation, embedded installation, floor-standing installation, etc. can be satisfied.
An air purification system according to a fifth aspect of the present invention is the air purification system according to the first aspect of the present invention, wherein at least one of the fresh air inlet, the supply air inlet, the return air inlet, and the exhaust air outlet is provided in the casing in a form of a grill, or is connected to an air duct.
According to the air purification system of the fifth aspect of the present invention, different installation requirements can be satisfied.
An air purification system according to a sixth aspect of the present invention is the air purification system according to the first aspect of the present invention, wherein the air purification unit is provided in the air blowing path, the air purification unit includes a first purification unit and a second purification unit that are provided in the air blowing path in this order, the first purification unit is provided on the fresh air inlet side with respect to the intersection, and the second purification unit is provided on the air blowing inlet side with respect to the intersection.
According to the air purification system of the sixth aspect of the present invention, the two purification sections, i.e., the first purification section and the second purification section, are provided in this order, so that the purification effect can be improved, and, in comparison with the case where both the first purification section and the second purification section are provided at the position closer to the air supply port than the intersection of the bypass path and the air supply path, when the bypass path and the air return port are brought into conduction to perform the bypass operation, the internal circulation air does not flow through the first purification section, so that the cleanliness of the air supplied into the space to be air-conditioned is ensured, and the service life of the first purification section can be advantageously prolonged.
An air purification system of a seventh aspect of the present invention is the air purification system of the first aspect of the present invention, further comprising a heat exchange element provided upstream of the air purification device and/or in the air supply path.
Here, the heat exchange member may be any one of an electric heater, a semiconductor cooling fin, a heat exchanger, and a paper heat exchanger.
According to the air purification system of the seventh aspect of the present invention, the heat exchange element facilitates the start-up protection operation of the air purification system, and can also adjust the state of the air fed into the space to be air-conditioned, thereby improving the comfort level of the people in the space to be air-conditioned.
An air purification system according to an eighth aspect of the present invention is the air purification system according to the first aspect of the present invention, further comprising a signal receiving unit that is communicable with the control device, wherein the control device controls the operation of the blower fan and the exhaust fan and the states of the first damper and the second damper based on information received by the signal receiving unit.
According to the air purification system of the eighth aspect of the present invention, the control accuracy of the air purification system can be improved.
An air purification system according to a ninth aspect of the present invention is the air purification system according to the eighth aspect of the present invention, further comprising a detection device, wherein the signal receiving unit receives a detection result of the detection device, and/or further comprising an instruction transmitting unit, and the signal receiving unit receives information transmitted by the instruction transmitting unit.
According to the air purification system of the ninth aspect of the present invention, the control accuracy of the air purification system can be improved.
An air purification system according to a tenth aspect of the present invention is the air purification system according to the ninth aspect of the present invention, wherein the detection device includes: the air conditioner comprises a detection element arranged at the fresh air port for detecting outdoor air and a detection element arranged in the air purification system or at any position of an air conditioning object space for detecting indoor air.
According to the air purification system of the tenth aspect of the present invention, the detection accuracy of the air purification system can be improved, and the control accuracy of the air purification system can be further improved.
Eleventh inventionThe air purification system of the aspect is the air purification system of the tenth aspect of the present invention, wherein the detection element is a temperature sensor, a humidity sensor, a PM2.5 sensor, a CO sensor2The sensor comprises one or more of a sensor, a peculiar smell sensor, a smoke sensor, a germ sensor, a toxic gas sensor, a VOC sensor, a TVOC sensor, a human body perception sensor and a pressure sensor.
According to the air purification system of the eleventh aspect of the invention, a high-precision air purification system can be easily manufactured.
An air purification system according to a twelfth aspect of the present invention is the air purification system according to the first aspect of the present invention, wherein the blower fan is provided at a position closer to the air supply port in the air supply path and the exhaust fan is provided at a position closer to the exhaust port in the exhaust path, or the blower fan is provided at a position closer to the fresh air port in the air supply path and the exhaust fan is provided at a position closer to the return air port in the exhaust path.
According to the air purification system of the twelfth aspect of the present invention, the internal structure of the air purification apparatus is flexible and versatile.
An air purification system according to a thirteenth aspect of the present invention is the air purification system according to the first aspect of the present invention, wherein the air purification system is capable of performing a bypass operation, and the control device switches the second air valve to a state in which the bypass path is in communication with the return air port and operates the blower fan when the blower fan is disposed at a position in the blower path close to the blower port and the exhaust fan is disposed at a position in the exhaust path close to the exhaust port during the bypass operation; on the other hand, when the air supply fan is arranged at a position close to the fresh air inlet in the air supply path and the exhaust fan is arranged at a position close to the return air inlet in the exhaust path, the control device switches the second air valve to a state of conducting the bypass path and the return air inlet and enables the exhaust fan to operate.
An air purification system according to a fourteenth aspect of the present invention is the air purification system according to the first aspect of the present invention, wherein the air purification system is capable of performing a fresh air operation, and the control device switches the first air valve to a state in which fresh air can be circulated through the air supply path during the fresh air operation.
An air purification system according to a fifteenth aspect of the present invention is the air purification system according to the first aspect of the present invention, wherein the air purification system is capable of performing an air discharge operation, and the control device switches the second air damper to a state in which the air discharge path and the air return opening are in communication and operates the exhaust fan during the air discharge operation.
According to the air purification systems of the thirteenth to fifteenth aspects of the present invention, switching of the various operation modes is easy.
In order to achieve the object, a sixteenth aspect of the present invention provides a control method of an air purification system, adapted to the air purification system of any one of the first to seventh aspects of the present invention, wherein the air purification system further includes a temperature detection element, the control method including the steps of: the temperature detection element detects the outdoor air temperature and sends the detection result of the outdoor air temperature to the control device; the control device compares the detection result of the outdoor air temperature with a preset outdoor air temperature threshold range including a first range; when the detection result of the outdoor air temperature is within the first range, the control device switches the second air valve to a state of conducting the bypass path and the return air inlet and operates the air supply fan to perform bypass operation when the air supply fan is disposed at a position close to the air supply outlet in the air supply path and the air discharge fan is disposed at a position close to the air discharge outlet in the air discharge path; on the other hand, when the air supply fan is disposed at a position close to the fresh air inlet in the air supply path and the exhaust fan is disposed at a position close to the return air inlet in the exhaust path, the control device switches the second air valve to a state in which the bypass path is in communication with the return air inlet, and operates the exhaust fan, thereby performing bypass operation.
Here, the first range may be, for example, -20 ℃ to 10 ℃ and 30 ℃ to 55 ℃.
According to the control method of the air purification system in the sixteenth aspect of the invention, the control method is simple and convenient, the control precision of the air purification system can be improved, and the requirements of users on air quality under different working conditions are met.
A control method of an air purification system according to a seventeenth aspect of the present invention is the control method of an air purification system according to the sixteenth aspect of the present invention, wherein the preset outdoor air temperature threshold range further includes a second range, and when the detection result of the outdoor air temperature is within the second range, the control device switches the first damper to a state in which fresh air can be circulated through the air supply path, and operates the air supply fan, thereby performing the fresh air operation.
Here, the second range may be, for example, -15 ℃ to 45 ℃.
A control method of an air purification system according to an eighteenth aspect of the present invention is the control method of an air purification system according to the seventeenth aspect of the present invention, wherein the first range and the second range partially overlap, when the detection result of the outdoor air temperature is in the overlapping region of the first range and the second range, the control device determines whether or not the duration of one of the bypass operation and the fresh air operation has reached a preset duration in the case where the current operation is one of the bypass operation and the fresh air operation, and switches to the other of the bypass operation and the fresh air operation if the duration has reached the preset duration, and on the other hand, continues to perform the one if the duration has not reached the preset duration.
Here, in the overlapping region of the first range and the second range, if the temperature approaches the critical point of the first range, the bypass operation may be turned on, and if the temperature approaches the critical point of the second range, the fresh air operation may be turned on.
A control method of an air purification system according to a nineteenth aspect of the present invention is the control method of an air purification system according to any one of the sixteenth to eighteenth aspects of the present invention, wherein the preset outdoor air temperature threshold range further includes a third range, and the control device switches the first damper to a state in which fresh air is not introduced when the detection result of the outdoor air temperature is within the third range.
Here, the third range may be, for example, from-25 ℃ to-20 ℃ and from 55 ℃ to 60 ℃.
A control method of an air purification system according to a twentieth aspect of the present invention is the control method of the air purification system according to the sixteenth aspect of the present invention, wherein the air purification system performs a protection operation when the detection result of the outdoor air temperature is outside the preset outdoor air temperature threshold range.
Here, the preset outdoor air temperature threshold range is out of, for example, T < -25 ℃ and T > 60 ℃. The mode of the protection operation may be any one of a state in which the heat exchange element is turned on to adjust the ambient temperature to be suitable for the operation, an intermittent operation, and a shutdown protection.
According to the control method of the air purification system in the seventeenth aspect to the twentieth aspect of the present invention, different operation modes are adopted in different ranges, which is beneficial to improving comfort, avoiding failure and prolonging service life.
A twenty-first aspect of the present invention is a control method for an air purification system according to the seventeenth aspect of the present invention, wherein the air purification system further includes an air quality detection element, when a detection result of the outdoor air temperature is within the second range, the air quality detection element detects indoor air quality, and sends the detection result of the indoor air quality to the control device, and the control device compares the detection result of the indoor air quality with a preset indoor air quality threshold range, and adjusts an amount of fresh air introduced according to the comparison result.
A twenty-second aspect of the present invention is a control method of an air purification system according to the sixteenth aspect of the present invention, wherein the air purification system further includes an air quality detection element, the air quality detection element detects indoor air quality when a detection result of the outdoor air temperature is within the first range, and the control device compares the detection result of the indoor air quality with a preset indoor air quality threshold range and determines whether to introduce fresh air according to the comparison result.
A control method of an air purification system according to a twenty-third aspect of the present invention is the control method of an air purification system according to the nineteenth aspect of the present invention, wherein the air purification system further includes an air quality detection element that detects indoor air quality when a detection result of the outdoor air temperature is within the third range, and the control device compares the detection result of the indoor air quality with a preset indoor air quality threshold range and performs a bypass operation according to the comparison result, or switches the second air valve to a state in which the exhaust path and the return air port are communicated and operates the exhaust fan to perform an exhaust operation.
A control method of an air purification system according to a twenty-fourth aspect of the present invention is the control method of the air purification system according to the sixteenth aspect of the present invention, wherein the air purification system further includes an air quality detection element, when a detection result of the outdoor air temperature is within the first range, the air quality detection element detects the outdoor air quality and sends the detection result of the outdoor air quality to the control device, and the control device compares the detection result of the outdoor air quality with a preset outdoor air quality threshold range; when the detection result of the outdoor air quality is within the threshold range of the outdoor air quality, the control device switches the first air valve to a state that fresh air can circulate in the air supply path, and enables the air supply fan to operate, so that fresh air operation is performed; and when the detection result of the outdoor air quality is out of the outdoor air quality threshold range, the control device switches the first air valve to a state of not introducing fresh air.
According to the control method of the air purification system in the twenty-first aspect to the twenty-fourth aspect of the invention, by adding the detection step, the requirements of people in the space to be air-conditioned can be better met, and the comfort level of the space to be air-conditioned can be improved.
In order to achieve the object, a twenty-fifth aspect of the present invention provides a control method of an air purification system, adapted to the air purification system of any one of the first to seventh aspects of the present invention, the air purification system further including an air quality detection element, the control method including the steps of: the air quality detection element detects the indoor air quality and sends the detection result of the indoor air quality to the control device; the control device compares the detection result of the indoor air quality with a preset indoor air quality threshold range; when the detection result of the indoor air quality is within the preset indoor air quality threshold range, under the condition that the air supply fan is arranged at the position close to the air supply opening in the air supply path and the exhaust fan is arranged at the position close to the exhaust opening in the exhaust path, the control device switches the second air valve to a state of conducting the bypass path and the return air opening, and enables the air supply fan to operate, so that bypass operation is performed; on the other hand, when the air supply fan is disposed at a position close to the fresh air inlet in the air supply path and the exhaust fan is disposed at a position close to the return air inlet in the exhaust path, the control device switches the second air valve to a state in which the bypass path is in communication with the return air inlet, and operates the exhaust fan, thereby performing bypass operation.
According to the control method of the air purification system in the twenty-fifth aspect of the invention, the control method is simple and convenient, the control precision of the air purification system can be improved, and the requirements of users on air quality under different working conditions are met.
A control method of an air purification system according to a twenty-sixth aspect of the present invention is the control method of an air purification system according to the twenty-fifth aspect of the present invention, wherein the air purification system further includes a temperature detection element, when a detection result of the indoor air quality is outside the preset indoor air quality threshold range, the temperature detection element detects an outdoor air temperature, and sends a detection result of the outdoor air temperature to the control device, and the control device compares the detection result of the outdoor air temperature with the preset outdoor air temperature threshold range; when the detection result of the outdoor air temperature is within the preset outdoor air temperature threshold range, the control device switches the first air valve to a state that fresh air can circulate in the air supply path, and enables the air supply fan to operate, so that fresh air operation is performed; and when the detection result of the outdoor air temperature is out of the preset outdoor air temperature threshold range, the control device switches the first air valve to a state of not introducing fresh air.
A twenty-seventh aspect of the present invention is the control method of the air purification system according to the twenty-fifth aspect of the present invention, wherein when the detection result of the indoor air quality is outside the preset indoor air quality threshold range, the air quality detection element detects the outdoor air quality, and sends the detection result of the outdoor air quality to the control device, and the control device compares the detection result of the outdoor air quality with the preset outdoor air quality threshold range; when the detection result of the outdoor air quality is within the preset outdoor air quality threshold range, the control device switches the first air valve to a state that fresh air can circulate in the air supply path, and enables the air supply fan to operate, so that fresh air operation is performed; and when the detection result of the outdoor air quality is out of the preset outdoor air quality threshold range, the control device switches the first air valve to a state of not introducing fresh air.
A control method of an air purification system according to a twenty-eighth aspect of the present invention is the control method of an air purification system according to the twenty-fifth aspect of the present invention, wherein the air purification system further includes a temperature detection element, when the detection result of the indoor air quality is outside the preset threshold range of the indoor air quality, the temperature detection element detects the outdoor air temperature and the indoor air temperature, and sends a difference between the detection result of the outdoor air temperature and the detection result of the indoor air temperature to the control device, and the control device compares the difference with the preset threshold range; when the difference value is within the preset threshold range, the control device switches the first air valve to a state that fresh air can circulate in the air supply path, and enables the air supply fan to operate, so that fresh air operation is performed; and when the difference value is out of the preset threshold range, the control device switches the first air valve to a state of not introducing fresh air.
According to the control method of the air purification system in the twenty-sixth aspect to the twenty-eighth aspect of the invention, by adding the detection step, the requirements of people in the space to be air-conditioned can be better met, and the comfort level of the space to be air-conditioned can be improved.
Effects of the invention
According to the air purification system and the control method thereof, the air purification system comprises the bypass path, the first air valve and the second air valve, the states of the first air valve and the second air valve and the operation of the air supply fan and the exhaust fan are controlled by using the control device, and the air purification system can be switched among a plurality of operation modes such as a fresh air + exhaust mode, a fresh air + internal circulation + exhaust mode, an internal circulation mode, a fresh air mode, an exhaust mode, a fresh air positive pressure mode and a fresh air negative pressure mode instead of simply conducting fresh air introduction, blow-down and internal circulation, so that the requirements of users on air quality under different working conditions can be met.
Drawings
Fig. 1 is a schematic diagram showing a configuration of an air purification system according to a first embodiment of the present invention.
Fig. 2 is a diagram showing an operation mode of the air purification system according to the first embodiment of the present invention, and shows a state in which the fresh air + exhaust mode is executed.
Fig. 3 is a diagram showing an operation mode of the air purification system according to the first embodiment of the present invention, and shows a state in which the fresh air positive pressure mode is executed.
Fig. 4 is a diagram showing an operation mode of the air purification system according to the first embodiment of the present invention, and shows a state in which the fresh air negative pressure mode is executed.
Fig. 5 is a diagram showing an operation mode of the air purification system according to the first embodiment of the present invention, and shows a state in which the fresh air + internal circulation mode is executed.
Fig. 6 is a diagram showing an operation mode of the air purification system according to the first embodiment of the present invention, and shows a state in which the internal circulation mode is executed.
Fig. 7 is a diagram showing an operation mode of the air purification system according to the first embodiment of the present invention, and shows a state in which the fresh air mode is executed.
Fig. 8 is a diagram showing an operation mode of the air purification system according to the first embodiment of the present invention, and shows a state in which the air discharge mode is executed.
Fig. 9 is a diagram showing an operation mode of the air purification system according to the first embodiment of the present invention, and shows a state in which the internal circulation + air discharge mode is executed.
Fig. 10 is a diagram showing a control method 1 of an air purification system according to a first embodiment of the present invention.
Fig. 11 is a diagram showing a control method 2 of the air purification system according to the first embodiment of the present invention.
Fig. 12 is a diagram showing a control method 3 of the air purification system according to the first embodiment of the present invention.
Fig. 13 is a diagram showing a control method 4 of the air purification system according to the first embodiment of the present invention.
Fig. 14 is a diagram showing a control method 5 of the air purification system according to the first embodiment of the present invention.
Fig. 15 is a diagram showing a control method 6 of the air purification system according to the first embodiment of the present invention.
Fig. 16 is a schematic diagram showing the configuration of an air purification system according to a second embodiment of the present invention.
Fig. 17 is a schematic perspective view showing the structure of an air purification system according to a third embodiment of the present invention.
Fig. 18 is a schematic diagram showing a configuration of an air purification system according to a modification of the first embodiment of the present invention.
Fig. 19 is a schematic diagram showing the configuration of an air purification system according to another modification of the first embodiment of the present invention.
(symbol description)
100 air purification device
10 casing
11. 11A and 11B fresh air ports
12. 12A, 12B1 and 12B2 air supply outlet
13. 13A and 13B air return inlets
14. 14A, 14B air outlet
20. 20A blower fan
30. 30A exhaust fan
40. 40A first purification section
50. 50A second purification part
60. 60A first air valve
70. 70A second air valve
80A, 80B heat exchange element
RA air supply path
RB air exhaust path
RC bypass path
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings.
< first embodiment >
The configuration of an air purification system, the operation mode of the air purification system, and the control method of the air purification system according to the first embodiment of the present invention will be described with reference to fig. 1 to 15.
(1) Structure of air purification system
The air purification system according to the first embodiment of the present invention includes an air purification apparatus 100 and a control apparatus (not shown) for controlling the air purification apparatus 100.
As shown in fig. 1, the air cleaning apparatus 100 includes a casing 10, the casing 10 has a fresh air port 11, an air supply port 12, a return air port 13, and an air discharge port 14, an air supply path RA from the fresh air port 11 to the air supply port 12 and an air discharge path RB from the return air port 13 to the air discharge port 14 are provided in the casing 10, and an air supply fan 20 and an air discharge fan 30 are provided in the air supply path RA and the air discharge path RB, respectively.
Further, as shown in FIG. 1, a bypass path RC is provided in the casing 10, one end of the bypass path RC is connected to the return air inlet 13, the other end of the bypass path RC is connected to the blowing path RA, a first air valve 60 is provided in the air blowing path RA at a position closer to the fresh air inlet 11 side than the intersection of the bypass path RC and the air blowing path RA, the first air valve 60 can be switched between a state of allowing fresh air to be introduced from the fresh air port 11 and a state of preventing fresh air from being introduced from the fresh air port 11, a second air valve 70 is provided in the air exhaust path RB, the second damper 70 is switchable between a state in which the return port 13 is communicated with only the bypass path RC, a state in which the return port 13 is communicated with only the exhaust path RB, and a state in which the return port 13 is simultaneously communicated with both the bypass path RC and the exhaust path RB, and the control device controls the states of the first damper 60 and the second damper 70 and the operations of the blower fan 20 and the exhaust fan 30.
Here, as shown in fig. 1, the blower fan 20 is provided on the blower port 12 side in the blower path RA, the exhaust fan 30 is provided on the exhaust path RB on the exhaust port 14 side, the first air valve 60 is provided at a position close to the fresh air port 11, the second air valve 70 is provided in the middle of the exhaust path RB, and the first air valve 60 and the second air valve 70 are driven by a motor (not shown).
In the present embodiment, an air cleaning unit is provided in the air blowing path RA. Specifically, as shown in fig. 1, the air cleaning assembly includes a first cleaning unit 40 and a second cleaning unit 50 which are sequentially disposed in the air blowing path RA, the first cleaning unit 40 is disposed at a position closer to the fresh air inlet 11 than a junction between the bypass path RC and the air blowing path RA, and the second cleaning unit 50 is disposed at a position closer to the air blowing inlet 12 than the junction between the bypass path RC and the air blowing path RA, wherein the first cleaning unit 40 is an activated carbon filter, and the second cleaning unit 50 is a PM2.5 filter. Of course, the air purification assembly may further include a third purification portion, which may be provided in the air supply path RA or the bypass path RC, or at another position where the air finally fed into the air conditioning object space can be purified, and which may be a smell removal filter net, a smoke filter net, a formaldehyde removal filter net, a photocatalytic filter net, a sterilization filter net, or the like.
In addition, in the present embodiment, the air purification system further includes a detection device (not shown) including an air quality detection element (e.g., an indoor air quality detection element and/or an outdoor air quality detection element) and a temperature detection element (e.g., an indoor temperature detection element and/or an outdoor temperature detection element), and the control device controls the operation of the blower fan 20 and the discharge fan 30 and the states of the first damper 60 and the second damper 70 according to a detection result of the detection device. Here, the air quality detecting element includes a PM2.5 sensor and CO that detect the indoor air quality2The temperature detection element comprises a temperature sensor for detecting the temperature of indoor air and a temperature sensor for detecting the temperature of outdoor air. PM2.5 sensor and CO for detecting indoor air quality2The sensor and the temperature sensor for detecting the indoor air temperature may be provided near the return air port 13, and may be provided in the air cleaning system or at any position of the air-conditioning object space (e.g., remote controller, indoor wall), and the temperature sensor for detecting the outdoor air temperature and the PM2.5 sensor for detecting the outdoor air quality may be provided near the fresh air port 11. Of course, as the air quality detecting element, the detecting device may further include one or more of a humidity sensor, an odor sensor, a smoke sensor, a germ sensor, a toxic gas sensor, a VOC sensor, a TVOC sensor, a human body sensing sensor, and a pressure sensor.
(2) Operation mode of air purification system
In the present embodiment, the operation of the air supply fan 20 and the air exhaust fan 30 and the states of the first air valve 60 and the second air valve 70 are controlled by the control device according to the detection result of the detection device, and the air purification system can operate in a plurality of modes, i.e., a fresh air + exhaust mode, a fresh air + internal circulation + exhaust mode, a fresh air positive pressure mode, a fresh air negative pressure mode, a fresh air + internal circulation mode, an internal circulation mode, a fresh air mode, an exhaust mode, and an internal circulation + exhaust mode.
(2-1) fresh air and exhaust mode
As shown in fig. 2, the control device adjusts the first damper 60 to be fully opened, positions the second damper 70 on the side of the bypass path RC, turns on all the exhaust paths RB, turns on the blower fan 20 and the exhaust fan 30, respectively, and adjusts the rotation speeds of the blower fan 20 and the exhaust fan 30 to make the air supply amount and the exhaust amount substantially the same to ensure the air pressure balance in the room, based on the detection result of the detection device.
At this time, outdoor fresh air enters the air supply path RA of the air purification apparatus 100 through the fresh air inlet 11, passes through the first purification unit 40 and the second purification unit 50 in this order, is purified, and is then supplied to the room through the air supply outlet 12, and indoor dirty air enters the air discharge path RB through the return air inlet 13 and is discharged to the outside through the air discharge outlet 14.
This mode of operation is generally used when it is necessary to introduce fresh outdoor air and discharge dirty indoor air outdoors in the event of a short new indoor repair, a large number of indoor persons, or the like.
(2-2) fresh air positive pressure mode
As shown in fig. 3, the control device adjusts the first damper 60 to be fully opened, positions the second damper 70 on the bypass path RC side, turns on all the exhaust paths RB, turns on the blower fan 20 and the exhaust fan 30, respectively, based on the detection result of the detection device (e.g., the pressure sensor), and adjusts the rotation speeds of the blower fan 20 and the exhaust fan 30 so that the air supply amount is greater than the exhaust amount, thereby forming a positive indoor pressure.
At this time, fresh outdoor air enters the air supply path RA of the air purification apparatus 100 through the fresh air inlet 11, passes through the first purification unit 40 and the second purification unit 50 in this order, is purified, and is then supplied to the room through the air supply outlet 12, and a small amount of dirty indoor air enters the air discharge path RB through the return air inlet 13 and is discharged to the outside through the air discharge outlet 14.
Of course, the operation mode may be realized by the control device opening the first damper 60 to the full, positioning the second damper 70 on the bypass path RC side, and partially opening the discharge path RB.
This mode of operation is typically employed in situations where the user feels that the air pressure in the room is too low, etc. and requires a large amount of fresh air to be introduced.
(2-3) fresh air negative pressure mode
As shown in fig. 4, the control unit adjusts the first damper 60 to be fully opened, positions the second damper 70 on the bypass path RC side, turns on all the exhaust paths RB, turns on the blower fan 20 and the exhaust fan 30, respectively, based on the detection result of the detection unit (e.g., the pressure sensor, the odor sensor, etc.), and adjusts the rotation speeds of the blower fan 20 and the exhaust fan 30 so that the air supply amount is smaller than the exhaust amount, thereby forming a negative pressure in the room.
At this time, a small amount of fresh outdoor air enters the air supply path RA of the air purification apparatus 100 through the fresh air inlet 11, passes through the first purification unit 40 and the second purification unit 50 in this order, is purified, and is then supplied to the room through the air supply outlet 12, and indoor dirty air enters the air discharge path RB through the return air inlet 13 and is discharged to the outside through the air discharge outlet 14.
Of course, this operation mode may be realized by adjusting the first damper 60 to be partially opened by the control device, positioning the second damper 70 on the bypass path side, and turning on all the exhaust paths RB.
This mode of operation is typically employed in situations where a large volume of room air is required to vent the room for the presence of odors, preventing their transmission.
(2-4) fresh air + internal circulation mode
As shown in fig. 5, according to the detection result of the detection device, the control device opens the first air valve 60, positions the second air valve 70 on the exhaust path RB side (i.e., the bypass path RC is connected to the return air inlet 13, and the exhaust path RB is blocked from the return air inlet 13), turns on the blower fan 20, and stops the exhaust fan 30.
At this time, outdoor fresh air enters the air blowing path RA of the air cleaning device 100 through the fresh air inlet 11, passes through the first cleaning unit 40 and the second cleaning unit 50 in this order, is cleaned, and is then blown into the room through the air blowing port 12, and indoor dirty air enters the bypass path RC through the return air inlet 13, is cleaned by the second cleaning unit 50, and is then blown into the room through the air blowing port 12.
The operation mode is usually adopted when outdoor fresh air needs to be introduced and the indoor and outdoor temperature difference degree is large or under the condition that the energy-saving requirement of a user is high. In this operation mode, the temperature of the air supplied into the space to be air-conditioned can be adjusted by mixing the internal circulation air with the fresh air.
(2-5) fresh air + internal circulation + air exhaust mode
Although not shown, the control device may open the blower fan 20 and the exhaust fan 30, respectively, open the first damper 60, and switch the second damper 70 to a state in which both the exhaust path RB and the bypass path RC are turned on, as necessary, thereby implementing the fresh air + internal circulation + exhaust mode.
In practice, the fresh air + exhaust mode, the fresh air positive pressure mode, the fresh air negative pressure mode, the fresh air + internal circulation mode, and the fresh air + internal circulation + exhaust mode can be selected with reference to the detection results shown in the following table 1.
TABLE 1
Detection device Indoor air Outdoor air Air purification assembly
PM2.5 sensor Height of Is normal Activated carbon filter screen and PM2.5 filter screen
C02Sensor with a sensor element Height of Is normal Activated carbon filter screen and PM2.5 filter screen
Peculiar smell sensor Height of Is normal Activated carbon filter screen, odor removal filter screen and PM2.5 filter screen
Smoke sensor Height of Is normal Activated carbon filter screen, smoke dust filter screen and PM2.5 filter screen
Germ sensor Height of Is normal Activated carbon filter screen, PM2.5 filter screen and degerming filter screen
Toxic gas sensor Height of Is normal Activated carbon filter screen and PM2.5 filter screen
Incidentally, in the above table, "high" means "the density of the detection object is high", and "normal" means "the density of the detection object is normal". For example, in the case of the PM2.5 sensor, the case where the indoor air is "high" and the outdoor air is "normal" means the case where the concentration of PM2.5 contained in the indoor air is high and the concentration of PM2.5 contained in the outdoor air is normal.
In addition, under the condition that the detection device is a temperature sensor and the air purification assembly is an activated carbon filter screen and a PM2.5 filter screen, a fresh air + exhaust mode, a fresh air positive pressure mode, a fresh air negative pressure mode, a fresh air + internal circulation + exhaust mode can be selected when the difference value between the detected indoor air temperature and the outdoor air temperature is not large.
(2-6) internal circulation mode
As shown in fig. 6, the control device closes the first air valve 60, positions the second air valve 70 on the exhaust path RB side, turns on the blower fan 20, and stops the exhaust fan 30, based on the detection result of the detection device.
At this time, the fresh outdoor air cannot enter the air cleaning device 100, and the dirty indoor air enters the bypass path RC through the return air inlet 13, is cleaned by the second cleaning unit 50, and is sent to the indoor through the air outlet 12.
This mode of operation is typically employed in situations where the temperature difference between the inside and outside of the room is large, outdoor air pollution is severe, and the like.
In practice, the inner circulation pattern may be selected with reference to the detection results shown in table 2 below.
TABLE 2
Detection device Indoor air Outdoor air Air purification assembly
PM2.5 sensor Height of Height of Activated carbon filter screen and PM2.5 filter screen
C02Sensor with a sensor element Height of Height of Activated carbon filter screen and PM2.5 filter screen
Peculiar smell sensor Height of Height of Activated carbon filter screen, odor removal filter screen and PM2.5 filter screen
Smoke sensor Height of Height of Activated carbon filter screen, smoke dust filter screen and PM2.5 filter screen
Germ sensor Height of Height of Activated carbon filter screen, PM2.5 filter screen and degerming filter screen
Toxic gas sensor Height of Height of Activated carbon filter screen and PM2.5 filter screen
Incidentally, in the above table, "high" means "the concentration of the detection object is high". For example, in the case of the PM2.5 sensor, the case where the indoor air is "high" and the case where the outdoor air is "high" indicates a case where the concentration of PM2.5 contained in the indoor air is high and the concentration of PM2.5 contained in the outdoor air is high.
In addition, in the case where the detection means is a temperature sensor and the air cleaning module is an activated carbon filter + PM2.5 filter, the internal circulation mode may be selected when the detected temperature of the indoor air is normal and the temperature of the outdoor air is high or low.
(2-7) fresh air mode
As shown in fig. 7, the control device opens the first damper 60, switches the second damper 70 to the bypass path RC side, turns on the blower fan 20, and stops the blower fan 30, based on the detection result of the detection device.
At this time, the fresh outdoor air enters the air blowing path RA of the air cleaning device 100 through the fresh air inlet 11, passes through the first cleaning unit 40 and the second cleaning unit 50 in this order, is cleaned, and is then blown into the room through the air blowing inlet 12.
(2-8) air discharge mode
As shown in fig. 8, the control device stops the operation of the blower fan 20, closes the first damper 60, positions the second damper 70 on the bypass path RC side (i.e., the bypass path RC is blocked from the return air port 13, and the exhaust path RB is connected to the return air port 13) based on the detection result of the detection device, and operates the exhaust fan 20.
At this time, the dirty indoor air enters the air cleaning device 100 through the return air inlet 13 and is discharged to the outside through the discharge outlet 14.
Often the air is too dirty (e.g., CO) in the room2PM2.5 concentration is too high, odor is large, smoke is heavy) and the like.
In practice, the air discharge mode may be selected with reference to the detection results shown in table 3 below.
TABLE 3
Detection device Indoor air Outdoor air Air purification assembly
PM2.5 sensor Height of Height of Activated carbon filter screen and PM2.5 filter screen
C02SensingDevice for cleaning the skin Height of Height of Activated carbon filter screen and PM2.5 filter screen
Peculiar smell sensor Height of Height of Activated carbon filter screen, odor removal filter screen and PM2.5 filter screen
Smoke sensor Height of Height of Activated carbon filter screen, smoke dust filter screen and PM2.5 filter screen
Germ sensor Height of Height of Activated carbon filter screen, PM2.5 filter screen and degerming filter screen
Toxic gas sensor Height of Height of Activated carbon filter screen and PM2.5 filter screen
Incidentally, in the above table, "high" means "the concentration of the detection object is high". For example, in the case of the PM2.5 sensor, the case where the indoor air is "high" and the case where the outdoor air is "high" indicates a case where the concentration of PM2.5 contained in the indoor air is high and the concentration of PM2.5 contained in the outdoor air is high.
In addition, in the case where the detection device is a temperature sensor and the air cleaning module is an activated carbon filter and a PM2.5 filter, the discharge mode may be selected when the detected temperature of the indoor air is normal and the temperature of the outdoor air is high or low.
(2-9) internal circulation + exhaust mode
As shown in fig. 9, the controller closes the first damper 60 and positions the second damper 70 between the bypass path RC and the exhaust path RB (i.e., the bypass path RC and the exhaust path RB are partially opened, respectively) according to the detection result of the detector, and opens the blower fan 20 and the exhaust fan 30, respectively.
At this time, the dirty air in the room is partially discharged to the outside of the room through the discharge air path RB, and partially returned to the room through the bypass path RC and the air supply path RA.
This mode of operation is generally employed in cases where the indoor air is excessively dirty and the temperature difference between the inside and outside of the room is large or the outdoor air is heavily polluted.
On the basis of the operation mode, if the first air valve 60 is completely opened or partially opened, fresh air can be introduced to form a mode of fresh air, internal circulation and exhaust.
Here, the relationship between the above-described respective modes and the specific states of the blower fan 20, the discharge fan 30, the first damper 60, and the second damper 70 is summarized in table 4 below.
TABLE 4
Figure BDA0000930627810000191
In the above table, the fresh air + internal circulation mode, the fresh air + internal circulation + exhaust mode, and the internal circulation + exhaust mode correspond to the bypass operation in the present invention, the fresh air + exhaust mode, the fresh air + internal circulation + exhaust mode, the fresh air positive pressure mode, and the fresh air negative pressure mode correspond to the fresh air operation in the present invention, and the fresh air + exhaust mode, the fresh air + internal circulation + exhaust mode, the internal circulation + exhaust mode, and the exhaust mode correspond to the exhaust operation in the present invention.
(3) Control method of air purification system
In the present embodiment, the air purification system can be controlled by a plurality of control methods.
(3-1) control method 1
As shown in fig. 10, the control method 1 includes the steps of:
first, the temperature detecting element detects the outdoor air temperature TOuter coverAnd the outdoor air temperature T is adjustedOuter coverIs sent to the control device.
Then, the control device changes the outdoor air temperature TOuter coverThe detection result of (a) is compared with a preset outdoor air temperature threshold range, wherein the preset outdoor air temperature threshold range includes a first range, a second range and a third range. Here, the first range is, for example, -20 ℃ to 10 ℃ and 30 ℃ to 55 ℃, the second range is, for example, -15 ℃ to 45 ℃, and the third range is, for example, -25 ℃ to-20 ℃ and 55 ℃ to 60 ℃. However, it is not limited thereto, and specific numerical values of the first range, the second range, and the third range may be appropriately set according to actual circumstances.
When the outdoor air temperature TOuter coverWhen the detection result is within the first range, the control device switches the second air valve to a state of communicating the return air inlet with the bypass path, and operates the blowing fan, so that the air purification system performs bypass operation, wherein the operation mode at this time includes: the air conditioner comprises an internal circulation mode, an internal circulation + air exhaust mode, an internal circulation + fresh air mode, and an internal circulation + fresh air + air exhaust mode.
When the outdoor air temperature TOuter coverWhen the detection result is in the second range, the control device switches the first air valve to a state of allowing fresh air to be introduced from a fresh air inlet, and operates the air supply fan, so that the air purification system performs fresh air operation, wherein the operation mode at this time includes: fresh air mode, fresh air + mode of airing exhaust, fresh air malleation mode, fresh air negative pressure mode, fresh air + inner loop + mode of airing exhaust.
When the outdoor air temperature TOuter coverWhen the detection result is in the third range, the control device switches the first air valve to a state that fresh air is not allowed to be introduced from the fresh air inlet, so that the air purification system does not introduce fresh air, and the operation mode at this time comprises: internal circulation mode, air exhaust mode, internal circulation and exhaustWind mode.
When the outdoor air temperature TOuter coverWhen the detection result is out of the preset outdoor air temperature threshold range, the air purification system performs protection operation. Here, the preset outdoor air temperature threshold range is out of, for example, T < -25 ℃ and T > 60 ℃. The mode of the protection operation may be any one of a state in which the heat exchange element is turned on to adjust the ambient temperature to be suitable for the operation, an intermittent operation, and a shutdown protection.
In addition, in the control method 1, a first range and a second range are partially overlapped, when the detection result of the outdoor air temperature is in the overlapping region of the first range and the second range, in the case where the current operation is one of the bypass operation and the fresh air operation, the control device judges whether or not the time length of the one reaches a preset time length, and if the preset time length is reached, switches to the other one of the bypass operation and the fresh air operation, and on the other hand, if the preset time length is not reached, continues to perform the one. Here, the following control method may also be adopted: in the overlapping area of the first range and the second range, if the temperature is close to the critical point of the first range, the bypass operation is started, and if the temperature is close to the critical point of the second range, the fresh air operation is started.
(3-2) control method 2
As shown in fig. 11, the control method 2 is different from the control method 1 in that when the outdoor air temperature T is highOuter coverWhen the indoor air quality detecting element is in the first range, the indoor air quality Z is detected by the indoor air quality detecting elementInner partAnd the indoor air quality Z is adjustedInner partSends the detection result to the control device, and the control device sends the indoor air quality ZInner partComparing the detection result with a preset indoor air quality threshold range; the control device judges whether the air purification system introduces fresh air or not according to the comparison result (for example, when the indoor PM2.5 exceeds a preset range, the fresh air is introduced).
When the outdoor air temperature TOuter coverIn the second range, the indoor air quality detecting element detects the indoor air quality ZInner partAnd the indoor air quality Z is adjustedInner partIs sent to the control device,the control device controls the indoor air quality ZInner partThe detection result is compared with a preset indoor air quality threshold range, and the control device adjusts the fresh air introduction amount according to the comparison result (for example, a large amount of fresh air is introduced when the indoor PM2.5 is a large value, and a small amount of fresh air is introduced when the indoor PM2.5 is a small value).
When the outdoor air temperature TOuter coverIn the third range, the indoor air quality detecting element detects the indoor air quality ZInner partAnd the indoor air quality Z is adjustedInner partSends the detection result to the control device, and the control device sends the indoor air quality ZInner partComparing the detection result with a preset indoor air quality threshold range; and the control device adjusts the air supply mode of the air purification system (without introducing fresh air) according to the comparison result.
(3-3) control method 3
As shown in fig. 12, the control method 2 is different from the control method 1 in that when the outdoor air temperature T is highOuter coverWhen the outdoor air quality detecting element is in the first range, the outdoor air quality Z is detected by the outdoor air quality detecting elementOuter coverAnd mixing the outdoor air quality ZOuter coverSends the detection result to the control device, and the control device sends the outdoor air quality ZOuter coverIs compared with a preset outdoor air quality threshold value.
When the outdoor air quality ZOuter coverWhen the detection result is in the outdoor air quality threshold range, the air purification system carries out fresh air operation. Here, the control means may adjust the indoor air quality ZInner partComparing the detection result with a preset indoor air quality threshold range; the control device adjusts the fresh air introducing amount according to the comparison result (for example, a large amount of fresh air is introduced when the indoor PM2.5 is a large value, and a small amount of fresh air is introduced when the indoor PM2.5 is a small value).
When the outdoor air quality ZOuter coverWhen the detection result lies in outside the outdoor air quality threshold value scope, air purification system does not introduce the new trend, and the running mode at this moment includes: an internal circulation mode, an air exhaust mode, and an internal circulation + air exhaust mode.
(3-4) control method 4
As shown in fig. 13, the control method 4 includes the steps of:
first, the air quality detecting element detects the indoor air quality ZInner partAnd the indoor air quality Z is adjustedInner partThe detection result of (2) is sent to the control device.
Then, the control device changes the indoor air quality ZInner partThe detection result is compared with a preset indoor air quality threshold range.
When the indoor air quality ZInner partWhen the detection result is within the preset indoor air quality threshold range, the control device enables the air purification system to carry out bypass operation.
When the indoor air quality ZInner partWhen the detection result is outside the preset indoor air quality threshold range, the temperature detection element detects the outdoor air temperature TOuter coverAnd the outdoor air temperature T is adjustedOuter coverSends the detection result to the control device, and the control device sends the outdoor air temperature TOuter coverThe detection result of (a) is compared with a preset outdoor air temperature threshold range.
When the outdoor air temperature TOuter coverWhen the testing result be in the preset outdoor air temperature threshold value within range, controlling means makes air purification system carry out the new trend operation, and the operation mode at this moment includes: fresh air mode, fresh air + mode of airing exhaust, fresh air malleation mode, fresh air negative pressure mode, fresh air + inner loop + mode of airing exhaust.
When the outdoor air temperature TOuter coverThe detection result of (2) is outside the range of the preset outdoor air temperature threshold value, the control device regulates the air purification system not to introduce fresh air, and the operation mode at the moment comprises: an internal circulation mode, an air exhaust mode, and an internal circulation + air exhaust mode.
(3-5) control method 5
As shown in fig. 14, the control method 5 is different from the control method 4 in that the indoor air quality Z is measuredInner partWhen the detection result is outside the preset indoor air quality threshold range, the air quality detection element detects the outdoor air quality ZOuter coverAnd mixing the outdoor air quality ZOuter coverIs sent to the control device, the control deviceMass of outdoor air ZOuter coverThe detection result of (a) is compared with a preset outdoor air quality threshold range.
When the outdoor air quality ZOuter coverWhen the testing result be in the indoor air quality threshold value within range of predetermineeing, controlling means makes air purification system carry out the new trend operation, and the operation mode at this moment includes: fresh air mode, fresh air + mode of airing exhaust, fresh air malleation mode, fresh air negative pressure mode, fresh air + inner loop + mode of airing exhaust.
When the outdoor air quality ZOuter coverWhen the detection result department presets outside the outdoor air quality threshold value scope, controlling means adjusts air purification system and does not introduce the new trend, and the running mode at this moment includes: an internal circulation mode, an air exhaust mode, and an internal circulation + air exhaust mode.
(3-6) control method 6
As shown in fig. 15, the control method 6 is different from the control method 4 in that the indoor air quality Z is measuredInner partWhen the detection result is outside the preset indoor air quality threshold range, the temperature detection element detects the outdoor air temperature TOuter coverAnd the temperature T of the indoor airInner partAnd the outdoor air temperature T is adjustedOuter coverThe detection result and the indoor air temperature TInner partThe difference between the detection results is sent to the control device, and the control device compares the difference with a preset threshold value.
When the difference is in the range of the preset threshold value, the control device enables the air purification system to carry out fresh air operation, and the operation mode at the moment comprises: fresh air mode, fresh air + mode of airing exhaust, fresh air malleation mode, fresh air negative pressure mode, fresh air + inner loop + mode of airing exhaust.
When the difference is outside the preset threshold range, the control device regulates the air purification system not to introduce fresh air, and the operation mode at the moment comprises: an internal circulation mode, an air exhaust mode, and an internal circulation + air exhaust mode.
(4) Technical effects of the present embodiment
According to the embodiment, the air purification system comprises the bypass path, the first air valve and the second air valve, the states of the first air valve and the second air valve and the operation of the air supply fan and the exhaust fan are controlled by the control device, the air purification system can be switched among a plurality of operation modes such as a fresh air + exhaust mode, a fresh air + internal circulation + exhaust mode, an internal circulation mode, a fresh air mode, an exhaust mode, a fresh air positive pressure mode and a fresh air negative pressure mode instead of simply introducing fresh air, discharging air and internal circulation, and therefore the requirements of users on air quality under different working conditions can be met.
In addition, according to this embodiment, can carry out the mixed flow through bypass operation to the air of sending into indoor, not only energy-conservation but also can promote user's comfort level to, both can introduce the new trend and carry out purification treatment to the new trend, can also carry out purification treatment to the room air, ensure the cleanliness factor of room air.
In addition, according to the present embodiment, the control method of the air purification system is simple and the control accuracy is high.
In addition, according to this embodiment, the active carbon filter screen that first purification portion used can carry out preliminary purification to the new trend (if adsorb poisonous and harmful gas in the new trend), the PM2.5 filter screen that the second purification portion used can purify the new trend once more (if filter the particulate matter in the new trend), ensure the high clean of new trend, and, because PM2.5 filter screen sets up the downstream side that is air supply path in the position that is close to the blower fan, PM2.5 filter screen can also purify the room air that introduces from bypass path, improve room air's cleanliness factor.
In addition, according to the embodiment, the installation position and the type of the detection device can be flexibly set according to the actual installation environment and the user requirement, and the detection device is arranged at a proper position, so that the accuracy of monitoring the air quality is improved, and the control precision of the air purification system is improved.
< second embodiment >
As shown in fig. 16, the second embodiment is different from the first embodiment in that the return port 13A is provided on a wall surface opposite to the wall surface where the exhaust port 14A is provided, the supply port 12A is provided on a wall surface adjacent to the wall surface where the fresh air port 11A is provided, and the first air valve 60A is provided at the fresh air port 11A, the supply fan 20A and the exhaust fan 30A are provided at positions close to the fresh air port 11A and the return port 13A, respectively, and the second air valve 70A is provided on the downstream side of the exhaust fan 30A.
In the present embodiment, as in the first embodiment, the operation of the blowing fan 20A and the discharging fan 30A and the states of the first air valve 60A and the second air valve 70A are controlled by the control device according to the detection result of the detection device, and the air purification system can operate in a plurality of modes, i.e., a fresh air + discharging mode, a fresh air + internal circulation + discharging mode, a fresh air positive pressure mode, a fresh air negative pressure mode, a fresh air + internal circulation mode, an internal circulation mode, a fresh air mode, a discharging mode, and an internal circulation + discharging mode.
Here, the relationship between the above-described respective modes and the specific states of the blower fan 20A, the discharge fan 30A, the first air damper 60A, and the second air damper 70A is summarized in table 5 below.
TABLE 5
Figure BDA0000930627810000251
In the above table, the fresh air + internal circulation mode, the fresh air + internal circulation + exhaust mode, and the internal circulation + exhaust mode correspond to the bypass operation in the present invention, the fresh air + exhaust mode, the fresh air + internal circulation + exhaust mode, the fresh air positive pressure mode, and the fresh air negative pressure mode correspond to the fresh air operation in the present invention, and the fresh air + exhaust mode, the fresh air + internal circulation + exhaust mode, the internal circulation + exhaust mode, and the exhaust mode correspond to the exhaust operation in the present invention.
For example, when the bypass operation is required, the second damper 70A closes the discharge path, opens the bypass path, and the internal circulation air flow is driven by the discharge fan 30A to enter the bypass path from the return air inlet 13A, and then enter the air supply path and is returned to the room from the air supply inlet 12A.
In the present embodiment, the control method 1 to 6 may be used to control the air purification system, similarly to the first embodiment (however, in this case, the bypass operation is performed in the control method 1 to 6The operation states of the blower fan and the exhaust fan in rotation are different from those in the above embodiment, for example, in the above control method 1, when the outdoor air temperature T is setOuter coverWhen the detection result of (2) is within the first range, the control device switches the second air valve to a state of communicating the return air inlet with the bypass path, and operates the exhaust fan, so that the air purification system performs bypass operation).
According to the present embodiment, substantially the same technical effects as those of the first embodiment can be obtained.
In addition, according to the present embodiment, since the air ports are respectively provided on the plurality of wall surfaces, the air cleaning device can flexibly adjust the orientation of the air ports according to the actual installation environment when being installed.
< third embodiment >
As shown in fig. 17, the difference between the third embodiment and the second embodiment is that the air purification apparatus can be placed on the floor, the air supply ports include 2 air supply ports 12B1, 12B2 disposed on the wall surface adjacent to the wall surface where the fresh air port 11B is located, these air supply ports 12B1, 12B2 are disposed on the top plate of the air purification apparatus, the return air port 13B and the exhaust air port 14B are disposed on the adjacent wall surface, the fresh air port 11B and the exhaust air port 14B can be connected to an air duct (not shown) to introduce fresh air and exhaust air, and the return air port 13B and the air supply ports 12B1, 12B2 are disposed on the housing in a grid state without additional connection of the air duct.
In this embodiment, as in the first embodiment, the operation of the air supply fan and the air exhaust fan and the states of the first air valve and the second air valve are controlled by the control device according to the detection result of the detection device, and the air purification system can operate in a plurality of modes, i.e., a fresh air + air exhaust mode, a fresh air + internal circulation + air exhaust mode, a fresh air positive pressure mode, a fresh air negative pressure mode, a fresh air + internal circulation mode, an internal circulation mode, a fresh air mode, an air exhaust mode, and an internal circulation + air exhaust mode.
In the present embodiment, the control method 1 to 6 may be used to control the air purification system, as in the first embodiment (in this case, as in the second embodiment, the control method 1 to 6 is different from the first embodiment in the operation states of the blower fan and the exhaust fan when the bypass operation is performed).
According to the present embodiment, substantially the same technical effects as those of the first embodiment can be obtained.
Further, according to the present embodiment, the air blowing ports 12B1 and 12B2 are provided on the ceiling of the air cleaning device, and thus the air blowing distance is long.
The present invention is described above by way of example with reference to the accompanying drawings, and it is to be understood that the specific implementations of the present invention are not limited to the above-described embodiments.
For example, in the above-described embodiment, the air purification system may further include a signal receiving unit that can communicate with the control device and can receive a detection result of the detection device, and the control device may control the operations of the blowing fan and the discharging fan and the states of the first damper and the second damper to switch between the plurality of operation modes according to information received by the signal receiving unit. In addition, in this case, the air purification system may further include an instruction sending unit, the instruction sending unit may be a control panel disposed in the air purification system, and may also be disposed on the remote controller or the line controller, and the signal receiving unit receives the information sent by the instruction sending unit and sends the information to the control device, that is, a user may adjust an operation mode of the air purification system through the remote controller, the line controller or the control panel, thereby facilitating operation.
Further, in the above embodiment, the air purification system may not include the detection device. In this case, the air purification system may include a signal receiving unit capable of communicating with the control device, and the control device controls the operation of the blowing fan and the discharging fan and the states of the first and second dampers to switch between the plurality of operation modes according to information received by the signal receiving unit.
In the above-described embodiment, the air cleaning unit is provided in the air blowing path, but the present invention is not limited to this, and the air cleaning unit may be provided in the bypass path instead of the air blowing path, or the air cleaning unit may be provided in both the air blowing path and the bypass path.
Further, in the above-described embodiment, the air cleaning assembly may include only one of the first cleaning portion and the second cleaning portion.
Further, in the above embodiment, the control device may include a control portion provided inside the air cleaning device and electrically connected to the sensor, the damper motor, and the fan motor, respectively. In this case, the control device may further include a line controller or a remote controller so that the user can switch the operation mode by adjusting the line controller or the remote controller.
Further, in the first embodiment, the air purification system may further include a heat exchange element 80A (see fig. 18) provided upstream of the air purification apparatus and/or a heat exchange element 80B (see fig. 19) in the air blowing path. Here, the heat exchanging elements 80A, 80B may be any one of an electric heater, a semiconductor cooling fin, a heat exchanger, and a paper heat exchanger. Of course, in the second and third embodiments, the heat exchange element may be provided in the same manner.
In the above embodiment, the fresh air operation also includes a case where fresh air is naturally introduced by a pressure difference between the inside and the outside of the air conditioning target space without opening the blower fan.
In the above embodiment, the specific configuration of the air damper is not limited to the one shown in the drawings, and may be an adjusting device capable of opening, closing, and switching the air passage, such as a three-way adjusting valve or a multi-vane adjusting valve. In the above embodiment, the first air valve and the second air valve may be different types of air valves, for example, the first air valve may be a multi-vane regulating valve, and the second air valve may be a three-way regulating valve.

Claims (28)

1. An air purification system, including air purification device and control device to air purification device control, the air purification device includes the body, the body has fresh air inlet, supply-air outlet, return air inlet and air exit, in the body is equipped with from the fresh air inlet to the supply-air outlet supply air route and from the return air inlet to the air exit exhaust air route, in the supply-air route and the exhaust air route are respectively equipped with supply-air fan and exhaust fan, the air purification system also includes the air purification assembly to the air that is sent to the air conditioning object space to purify, its characterized in that,
a bypass path is also arranged in the shell, one end of the bypass path is connected with the air return inlet, the other end of the bypass path is connected with the air supply path,
a first air valve is arranged in the air supply path and close to the fresh air inlet than the intersection of the bypass path and the air supply path, the first air valve can control the circulation state of fresh air in the air supply path,
a second air valve is arranged in the air exhaust path and can be switched to a state of communicating the bypass path with the air return opening and/or communicating the air exhaust path with the air return opening,
the air purification device is configured to: in a state where the first air valve allows fresh air to flow through the air supply path and the second air valve allows the return air opening to communicate only with the bypass path, fresh air flowing in from the fresh air opening can be mixed with air in the space to be air-conditioned which flows from the return air opening through the bypass path, and then discharged from the air supply opening.
2. The air purification system of claim 1,
the housing includes a plurality of wall surfaces,
at least two of the fresh air inlet, the air supply outlet, the air return inlet and the air outlet are respectively arranged on at least any two of the plurality of wall surfaces.
3. The air purification system of claim 1,
at least one of the fresh air inlet, the air supply outlet, the air return inlet and the air outlet is provided with a plurality of air inlets.
4. The air purification system of claim 1,
the air return openings are arranged in plurality and are arranged on the same wall surface or different wall surfaces of the shell,
and/or the presence of a gas in the gas,
the air supply openings are arranged in a plurality and are arranged on the same wall surface or different wall surfaces of the shell.
5. The air purification system of claim 1,
at least one of the fresh air inlet, the air supply outlet, the air return inlet and the air outlet is arranged on the shell in a grid form or is connected with an air pipe.
6. The air purification system of claim 1,
the air supply path is provided with the air purification assembly, the air purification assembly comprises a first purification part and a second purification part which are sequentially arranged in the air supply path, the first purification part is arranged at a position closer to the fresh air inlet side than the intersection, and the second purification part is arranged at a position closer to the fresh air inlet side than the intersection.
7. The air purification system of claim 1,
the air purification system further includes a heat exchange element provided upstream of the air purification device and/or in the air supply path.
8. The air purification system of claim 1,
the air purification system further comprises a signal receiving unit capable of communicating with the control device,
and the control device controls the operation of the air supply fan and the exhaust fan and the states of the first air valve and the second air valve according to the information received by the signal receiving unit.
9. The air purification system of claim 8,
the air purification system also comprises a detection device, the signal receiving unit receives the detection result of the detection device,
and/or the presence of a gas in the gas,
the air purification system further comprises an instruction sending unit, and the signal receiving unit receives the information sent by the instruction sending unit.
10. The air purification system of claim 9,
the detection device includes: the air conditioner comprises a detection element arranged at the fresh air port for detecting outdoor air and a detection element arranged in the air purification system or at any position of an air conditioning object space for detecting indoor air.
11. The air purification system of claim 10,
the detection element is a temperature sensor, a humidity sensor, a PM2.5 sensor, and a CO2The sensor comprises one or more of a sensor, a peculiar smell sensor, a smoke sensor, a germ sensor, a toxic gas sensor, a VOC sensor, a TVOC sensor, a human body perception sensor and a pressure sensor.
12. The air purification system of claim 1,
the air supply fan is arranged at a position close to the air supply port side in the air supply path and the exhaust fan is arranged at a position close to the exhaust port side in the exhaust path, or the air supply fan is arranged at a position close to the new air port side in the air supply path and the exhaust fan is arranged at a position close to the return air port side in the exhaust path.
13. The air purification system of claim 1,
the air purification system is capable of a bypass operation,
in the case where the bypass operation is performed,
when the air supply fan is arranged at a position close to the air supply opening in the air supply path and the exhaust fan is arranged at a position close to the exhaust opening in the exhaust path, the control device switches the second air valve to a state of conducting the bypass path and the return air opening and operates the air supply fan;
on the other hand, when the air supply fan is arranged at a position close to the fresh air inlet in the air supply path and the exhaust fan is arranged at a position close to the return air inlet in the exhaust path, the control device switches the second air valve to a state of conducting the bypass path and the return air inlet and enables the exhaust fan to operate.
14. The air purification system of claim 1,
the air purification system can carry out fresh air operation, and when the fresh air operation is carried out, the control device switches the first air valve to a state that fresh air can circulate in the air supply path.
15. The air purification system of claim 1,
the air purification system is capable of performing an air exhaust operation, and the control device switches the second air valve to a state in which the air exhaust path is communicated with the air return opening and operates the exhaust fan when performing the air exhaust operation.
16. A control method of an air purification system adapted to the air purification system of any one of claims 1 to 7,
the air purification system further includes a temperature sensing element,
the control method comprises the following steps:
the temperature detection element detects the outdoor air temperature and sends the detection result of the outdoor air temperature to the control device;
the control device compares the detection result of the outdoor air temperature with a preset outdoor air temperature threshold range including a first range;
when the detection result of the outdoor air temperature is within the first range,
when the air supply fan is disposed at a position close to the air supply port in the air supply path and the exhaust fan is disposed at a position close to the exhaust port in the exhaust path, the control device switches the second air valve to a state in which the bypass path is in communication with the air return port, and operates the air supply fan to perform bypass operation;
on the other hand, when the air supply fan is disposed at a position close to the fresh air inlet in the air supply path and the exhaust fan is disposed at a position close to the return air inlet in the exhaust path, the control device switches the second air valve to a state in which the bypass path is in communication with the return air inlet, and operates the exhaust fan, thereby performing bypass operation.
17. The control method of an air purification system according to claim 16,
the preset outdoor air temperature threshold range further includes a second range,
when the detection result of the outdoor air temperature is within the second range, the control device switches the first air valve to a state that fresh air can circulate in the air supply path, and enables the air supply fan to operate, so that fresh air operation is performed.
18. The control method of an air purification system according to claim 17,
the first range partially overlaps the second range,
when the detection result of the outdoor air temperature is in the overlapping area of the first range and the second range, the control device judges whether the duration of one of the bypass operation and the fresh air operation reaches a preset duration or not under the condition that the current operation is one of the bypass operation and the fresh air operation, if so, the control device switches to the other one of the bypass operation and the fresh air operation, and if not, the control device continues to perform the one.
19. The control method of an air purification system according to any one of claims 16 to 18,
the preset outdoor air temperature threshold range further includes a third range,
and when the detection result of the outdoor air temperature is in the third range, the control device switches the first air valve to a state of not introducing fresh air.
20. The control method of an air purification system according to claim 16,
and when the detection result of the outdoor air temperature is out of the preset outdoor air temperature threshold range, the air purification system performs protection operation.
21. The control method of an air purification system according to claim 17,
the air purification system further comprises an air quality detection element,
when the detection result of the outdoor air temperature is in the second range, the air quality detection element detects the indoor air quality and sends the detection result of the indoor air quality to the control device, and the control device compares the detection result of the indoor air quality with a preset indoor air quality threshold range and adjusts the fresh air introduction amount according to the comparison result.
22. The control method of an air purification system according to claim 16,
the air purification system further comprises an air quality detection element,
when the detection result of the outdoor air temperature is in the first range, the air quality detection element detects the indoor air quality, the control device compares the detection result of the indoor air quality with a preset indoor air quality threshold range, and judges whether to introduce fresh air according to the comparison result.
23. The control method of an air purification system according to claim 19,
the air purification system further comprises an air quality detection element,
when the detection result of the outdoor air temperature is within the third range, the air quality detection element detects the indoor air quality, the control device compares the detection result of the indoor air quality with a preset indoor air quality threshold range and performs bypass operation according to the comparison result, or the second air valve is switched to a state of communicating the exhaust path with the return air inlet and the exhaust fan is operated to perform exhaust operation.
24. The control method of an air purification system according to claim 16,
the air purification system further comprises an air quality detection element,
when the detection result of the outdoor air temperature is in the first range, the air quality detection element detects the outdoor air quality and sends the detection result of the outdoor air quality to the control device, and the control device compares the detection result of the outdoor air quality with a preset outdoor air quality threshold range;
when the detection result of the outdoor air quality is within the threshold range of the outdoor air quality, the control device switches the first air valve to a state that fresh air can circulate in the air supply path, and enables the air supply fan to operate, so that fresh air operation is performed;
and when the detection result of the outdoor air quality is out of the outdoor air quality threshold range, the control device switches the first air valve to a state of not introducing fresh air.
25. A control method of an air purification system adapted to the air purification system of any one of claims 1 to 7,
the air purification system further comprises an air quality detection element,
the control method comprises the following steps:
the air quality detection element detects the indoor air quality and sends the detection result of the indoor air quality to the control device;
the control device compares the detection result of the indoor air quality with a preset indoor air quality threshold range;
when the detection result of the indoor air quality is within the preset indoor air quality threshold range,
when the air supply fan is disposed at a position close to the air supply port in the air supply path and the exhaust fan is disposed at a position close to the exhaust port in the exhaust path, the control device switches the second air valve to a state in which the bypass path is in communication with the air return port, and operates the air supply fan to perform bypass operation;
on the other hand, when the air supply fan is disposed at a position close to the fresh air inlet in the air supply path and the exhaust fan is disposed at a position close to the return air inlet in the exhaust path, the control device switches the second air valve to a state in which the bypass path is in communication with the return air inlet, and operates the exhaust fan, thereby performing bypass operation.
26. The control method of an air purification system according to claim 25,
the air purification system further includes a temperature sensing element,
when the detection result of the indoor air quality is out of the preset indoor air quality threshold range, the temperature detection element detects the outdoor air temperature and sends the detection result of the outdoor air temperature to the control device, and the control device compares the detection result of the outdoor air temperature with the preset outdoor air temperature threshold range;
when the detection result of the outdoor air temperature is within the preset outdoor air temperature threshold range, the control device switches the first air valve to a state that fresh air can circulate in the air supply path, and enables the air supply fan to operate, so that fresh air operation is performed;
and when the detection result of the outdoor air temperature is out of the preset outdoor air temperature threshold range, the control device switches the first air valve to a state of not introducing fresh air.
27. The control method of an air purification system according to claim 25,
when the detection result of the indoor air quality is out of the preset indoor air quality threshold range, the air quality detection element detects the outdoor air quality and sends the detection result of the outdoor air quality to the control device, and the control device compares the detection result of the outdoor air quality with the preset outdoor air quality threshold range;
when the detection result of the outdoor air quality is within the preset outdoor air quality threshold range, the control device switches the first air valve to a state that fresh air can circulate in the air supply path, and enables the air supply fan to operate, so that fresh air operation is performed;
and when the detection result of the outdoor air quality is out of the preset outdoor air quality threshold range, the control device switches the first air valve to a state of not introducing fresh air.
28. The control method of an air purification system according to claim 25,
the air purification system further includes a temperature sensing element,
when the detection result of the indoor air quality is out of the preset threshold range of the indoor air quality, the temperature detection element detects the outdoor air temperature and the indoor air temperature, and sends the difference value between the detection result of the outdoor air temperature and the detection result of the indoor air temperature to the control device, and the control device compares the difference value with the preset threshold range;
when the difference value is within the preset threshold range, the control device switches the first air valve to a state that fresh air can circulate in the air supply path, and enables the air supply fan to operate, so that fresh air operation is performed;
and when the difference value is out of the preset threshold range, the control device switches the first air valve to a state of not introducing fresh air.
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