CN111121260A - Air supply device - Google Patents

Air supply device Download PDF

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Publication number
CN111121260A
CN111121260A CN201811282223.6A CN201811282223A CN111121260A CN 111121260 A CN111121260 A CN 111121260A CN 201811282223 A CN201811282223 A CN 201811282223A CN 111121260 A CN111121260 A CN 111121260A
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CN
China
Prior art keywords
air
passage
return
temperature
fresh
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811282223.6A
Other languages
Chinese (zh)
Inventor
王泽�
杨昊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Ecology Systems Guangdong Co Ltd
Original Assignee
Panasonic Ecology Systems Guangdong Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Ecology Systems Guangdong Co Ltd filed Critical Panasonic Ecology Systems Guangdong Co Ltd
Priority to CN201811282223.6A priority Critical patent/CN111121260A/en
Publication of CN111121260A publication Critical patent/CN111121260A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • 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
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The present invention provides an air supply device, including: a housing forming an outer shell; a fresh air port communicated with a second environment; an air return opening communicated with a first environment; a mixed wind path for mixing the fresh air flowing into the shell from the fresh air inlet and the return air flowing into the shell from the return air inlet to form a mixed fresh air wind path; an air supply outlet which communicates the mixing air path and the first environment; a blowing air temperature sensor for acquiring a temperature of blowing air flowing into the room from the blowing opening; a return air humidity sensor for acquiring the humidity of the return air; a return air temperature sensor for acquiring the temperature of return air; a dew condensation determination unit for determining whether dew condensation is generated in the mixed air duct based on the temperature of the supplied air, the temperature of the returned air, and the humidity of the returned air; and an inflow amount control unit for controlling the inflow amount of the fresh air and/or the return air flowing into the mixture air passage based on the determination result of the dew condensation determination unit.

Description

Air supply device
Technical Field
The present invention relates to an air supply device.
Background
The air supply device in the prior art has an air mixing mode for mixing indoor exhaust air with outdoor fresh air and supplying air to the indoor.
Under the mode of mixing air, when the outdoor temperature is low and the indoor temperature is high, the indoor exhaust air is mixed with the outdoor fresh air, and condensation can be generated inside the air supply device, so that the performance of the air supply device is influenced.
Disclosure of Invention
Technical problem to be solved
The air supply device in the prior art has the problems that the occurrence of condensation cannot be inhibited, the risk of condensation in the air supply device is increased, and the performance of the air supply device is influenced.
In order to solve the above problems, the present invention provides an air blower in which dew condensation is prevented from occurring inside the air blower, thereby preventing performance degradation of the air blower.
(II) technical scheme
In order to achieve the above object, the present invention provides an air blowing device including: a housing forming an outer shell; a fresh air port communicated with a second environment; an air return opening communicated with a first environment; a mixed wind path for mixing the fresh air flowing into the shell from the fresh air inlet and the return air flowing into the shell from the return air inlet to form a mixed fresh air wind path; an air supply outlet that communicates the mixture air duct with the first environment; a supply air temperature sensor for acquiring a temperature of supply air flowing into the room from the supply air outlet; a return air humidity sensor for acquiring the humidity of the return air; a return air temperature sensor for acquiring the temperature of the return air; a dew condensation determination unit for determining whether dew condensation is generated in the air-mix duct based on the temperature of the supplied air, the temperature of the return air, and the humidity of the return air; and an inflow amount controller for controlling an inflow amount of the fresh air and/or the return air to the mixture air passage based on a determination result of the dew condensation determinator.
(III) advantageous effects
The air supply device can accurately judge whether the interior of the air supply device generates dew, and automatically adjust the air volume according to the dew, so that the risk of dew formation is inhibited, and the performance reduction of the air supply device is inhibited.
Drawings
Fig. 1 is a schematic structural view of an air blowing device according to a first embodiment of the present invention.
Fig. 2 is a schematic structural view of an air blowing device according to a second embodiment of the present invention.
Fig. 3 is a schematic structural view of an air blowing device according to a third embodiment of the present invention.
Fig. 4 is another schematic structural diagram of an air blowing device according to a third embodiment of the present invention.
[ notation ] to show
A-a first environment; b-a second environment; 10a, 10b, 10 c-air supply means;
1-air supply and air supply channel; 11-fresh air port; 111-fresh air port air valve; 12-fresh air passage; 13-mixed air path; 14-air supply heat exchange air path; 15-air supply air path; 16-air supply outlet; 17-air supply fan; 121-fresh air temperature sensor; 131-a mixed air temperature sensor; 151-supply air temperature sensor; 18-a purification section;
2-a bypass path; 21-an intersection port;
3-return air channel; 31-air return; 32-the upstream section of the return air path; 33-wind heat return exchange air passage; 34-the downstream section of the return air passage; 35-fan for return air; 36-return air humidity sensor; 37-return air temperature sensor;
4-an air exhaust passage; 41-air outlet; 42-air outlet air valve;
5-a crossing; 6-a shell; 7-a control section; 8-a wall; 9. 10-pipeline.
Detailed Description
The air supply device provided by the invention comprises: a housing forming an outer shell; a fresh air port communicated with a second environment; an air return opening communicated with a first environment; a mixed wind path for mixing the fresh air flowing into the shell from the fresh air inlet and the return air flowing into the shell from the return air inlet to form a mixed fresh air wind path; an air supply outlet that communicates the mixture air duct with the first environment; a supply air temperature sensor for acquiring a temperature of supply air flowing into the room from the supply air outlet; a return air humidity sensor for acquiring the humidity of the return air; a return air temperature sensor for acquiring the temperature of the return air; a dew condensation determination unit for determining whether dew condensation is generated in the air-mix duct based on the temperature of the supplied air, the temperature of the return air, and the humidity of the return air; and an inflow amount controller for controlling an inflow amount of the fresh air and/or the return air to the mixture air passage based on a determination result of the dew condensation determinator.
By the structure, the air supply device can accurately judge whether the interior of the air supply device generates the condensation or not, and automatically adjust the air volume according to the condensation, so that the risk of the condensation is restrained, and the performance reduction of the air supply device is restrained.
In the blower device according to the present invention, the condensation determination unit includes: a dew point calculating unit that obtains a dew point temperature of the mixed air path based on the temperature of the return air and the humidity of the return air; and a comparing unit for comparing the dew point temperature of the air-fuel mixture path obtained by the dew point calculating unit with the temperature of the supplied air, and determining whether condensation occurs in the air-fuel mixture path.
By the structure, the temperature of the supplied air is easy to detect relative to the temperature of the mixed air, the dew condensation judgment result is easy to obtain, and the difficulty of inhibiting dew condensation is reduced.
The air supply device provided by the invention comprises: a housing forming an outer shell; a fresh air port communicated with a second environment; an air return opening communicated with a first environment; a mixed wind path for mixing the fresh air flowing into the shell from the fresh air inlet and the return air flowing into the shell from the return air inlet to form a mixed fresh air wind path; an air supply outlet that communicates the mixture air duct with the first environment; the mixed air temperature sensor is used for acquiring the temperature of the mixed fresh air; a return air humidity sensor for acquiring the humidity of the return air; a return air temperature sensor for acquiring the temperature of the return air; a dew condensation determination unit that determines whether or not dew condensation has occurred in the mixed air duct based on the temperature of the mixed fresh air, the temperature of the return air, and the humidity of the return air; and an inflow amount controller for controlling an inflow amount of the fresh air and/or the return air to the mixture air passage based on a determination result of the dew condensation determinator.
In the blower device of the present invention, the dew condensation determinator obtains the dew point temperature of the mixed air path according to the temperature of the return air and the humidity of the return air; and a comparing unit for comparing the dew point temperature of the air-fuel mixture path obtained by the dew point calculating unit with the temperature of the fresh air mixture to determine whether condensation is generated in the air-fuel mixture path.
The air blowing device of the present invention further includes: the fresh air inlet air valve is used for adjusting the inflow of fresh air from the fresh air inlet to the mixed air path; and an inflow control unit that reduces the opening of the fresh air port damper when it is determined that condensation has occurred, based on the determination result of the condensation determination unit.
By the structure, the air supply device adjusts the inflow of fresh air by reducing the opening of the fresh air inlet air valve, so that the risk of condensation can be inhibited, and the performance reduction of the air supply device can be inhibited.
The air blowing device of the present invention further includes: an air supply/blow passage that communicates the air supply port and the fresh air port, the air-fuel mixture passage constituting a part of the air supply/blow passage; an air supply fan for introducing air into the air supply outlet through the fresh air inlet to the air supply/blow-out passage; and an inflow control unit that reduces the amount of air blown by the air supply fan when it is determined that condensation has occurred based on the determination result of the condensation determination unit.
With the above configuration of the present invention, the air supply device can reduce the amount of air supplied by the air supply fan to adjust the amount of inflow of the mixed fresh air, thereby suppressing the risk of condensation and suppressing the performance degradation of the air supply device. And for the mode that reduces new trend mouth blast valve aperture, the control accuracy of fan for the air feed is higher, and is better to the control effect of the inflow of new trend.
The air blowing device of the present invention further includes: the return air passage is communicated with the return air inlet; a bypass passage that communicates the return air passage and the mixture air passage; a return air fan for introducing air into the mixture air passage through the return air inlet to the return air passage and the bypass passage; and an inflow control unit that increases the amount of air blown by the air return fan when it is determined that condensation has occurred, based on the determination result of the condensation determination unit.
With the above configuration of the present invention, the air supply device adjusts the inflow amount of return air by increasing the supply amount of the return air fan, thereby suppressing the risk of condensation and suppressing the performance degradation of the air supply device. And for the mode that reduces new trend mouth blast valve aperture, the control accuracy of fan for the return air is higher, and is better to the control effect of return air inflow.
The air blower device of the present invention further includes a cleaning unit disposed downstream of the mixture air passage and configured to clean air flowing in from the fresh air inlet; the fresh air opening is located on an upstream side of the mixture air passage.
The air blowing device of the present invention further includes: an air supply and supply passage for communicating the air supply outlet and the fresh air inlet; an air outlet which is communicated with the second environment; the return air passage is communicated with the return air inlet; a bypass passage that communicates the return air passage and the mixture air passage; an air discharge passage branched from the air return passage and connected to the air outlet; an air outlet air valve for opening and closing the bypass passage and the air exhaust passage; when the bypass passage is opened, the air exhaust passage is closed, and when the bypass passage is closed, the air exhaust passage is opened; and a cross portion for exchanging heat between the air flowing through the return air passage and the air flowing through the supply air blowing passage.
Through the structure of the invention, the air supply device can discharge indoor air to the outdoor and mix the indoor air and the outdoor air, has multiple functions and two purposes, and improves the use convenience.
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments and the drawings in the embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
(first embodiment)
Referring to fig. 1, an air blowing device 10a according to a first embodiment of the present invention is provided in a first environment a, and is configured to introduce air in a second environment B into the first environment a. For example, the first environment a is indoors, the second environment B is outdoors, and the first environment a and the second environment B are separated by a wall 8.
The blower device 10a includes: a casing 6, an air supply and supply passage 1, a bypass passage 2, an air return passage 3, an intersection 5, a fresh air temperature sensor 121, an air supply temperature sensor 151, an air return humidity sensor 36, a purifying part 18, and a control part 7.
The housing 6 is, for example, rectangular parallelepiped in shape. The casing 6 forms a housing of the air blowing device a. The casing 6 includes a fresh air inlet 11, a supply air outlet 16, and a return air inlet 31.
The fresh air port 11 is an opening through which the second environment B communicates with the casing 6 through the duct 9 and air is introduced from the second environment B into the casing 6. The fresh air port 11 is provided with a fresh air port damper 111, and the fresh air port damper 111 is used for opening or closing the fresh air port 11. The fresh air port damper 111 may also be held at any position between the opening and closing of the fresh air port 11, that is, the fresh air port damper 111 may adjust the opening degree of the fresh air port 11.
The air blowing port 16 is an opening for communicating the first atmosphere a and discharging air from the inside of the casing 6 to the first atmosphere a. And a blowing port 16 provided on one surface constituting the casing 6 and facing the surface of the fresh air port 11 facing the rest surface.
The return air opening 31 is an opening that communicates with the first environment a and introduces air from the first environment a into the casing 6. And a return air opening 31 provided on one surface constituting the casing 6 and facing the installation surface of the fresh air opening 11. That is, the return air opening 31 and the air supply opening 16 are provided on the same plane.
The cross portion 5 is provided inside the casing 6 and is a member for exchanging heat between the air flowing through the supply air blowing passage 1 and the air flowing through the return air passage 3. The heat exchange mentioned herein specifically includes at least one of temperature exchange, humidity exchange, and temperature and humidity exchange.
The air supply/blow passage 1 is a passage for communicating the fresh air port 11 and the blow port 16. The air supply/blow-down passage 1 is composed of a fresh air passage 12, a mixture passage 13, an air supply/heat exchange passage 14, and a blow-down air passage 15 connected in this order to the upstream side thereof.
The fresh air passage 12 is a passage from the fresh air inlet 11 to the junction 21 of the air supply/blow passage 1 and the bypass passage 2.
The mixture air passage 13 is an air passage from a junction 21 of the air supply/blow passage 1 and the bypass passage 2 to the cleaner 18.
The air-supply heat-exchange air passage 14 is an air passage for exchanging heat in the air-supply/blow-out passage 1, and corresponds to an air passage inside the cross portion 5. The air supply duct 15 is a duct from the intersection 5 to the air supply port 16.
The air supply and blow passage 1 includes: an air supply fan 17, a fresh air temperature sensor 121, a blowing air temperature sensor 151, and a purification unit 18.
And an air supply fan 17 which is provided on the side of the air supply/blow-out passage 1 close to the blow-out port 16 and forms an air flow in the air supply/blow-out passage 1 flowing in the direction from the fresh air port 11 to the blow-out port 16.
And the fresh air temperature sensor 121 is arranged on one side, close to the fresh air opening 11, in the fresh air duct 12 and used for detecting the temperature of fresh air.
And a cleaner 18 provided downstream of the air-fuel mixture passage 13 and filtering air passing through the cleaner 18 in the air-supply blowing passage 1.
And an air temperature sensor 151 provided on a side of the air duct 15 close to the air outlet 16, for detecting the temperature of the air.
The return air passage 3 is a passage communicating with the return air inlet 31. The return air passage 3 is composed of a return air passage upstream section 32, a return air heat exchange air passage 33, and a return air passage downstream section 34, which are connected in this order on the upstream side thereof.
The return air passage upstream section 32 is an air passage from the return air inlet 31 to the upstream side of the return air heat exchange air passage 33. The return air heat exchange air passage 33 is an air passage for exchanging heat in the return air passage 3, and corresponds to an air passage inside the cross portion 5. The return air passage downstream section 34 is an air passage from the downstream side of the return air heat exchange air passage 33 to the bypass passage 2.
The return air passage 3 includes: a return air humidity sensor 36, a return air temperature sensor 37 and a return air fan 35.
And a return air fan 35 which is provided in the return air passage 3 and forms an air flow in the return air passage 3 and the bypass passage 2 from the return air inlet 31 to the supplied air blowing passage 1.
And a return air humidity sensor 36 disposed on a side of the return air passage 3 close to the return air inlet 31, for detecting the humidity of the return air.
And a return air temperature sensor 37 provided on a side of the return air passage 3 close to the return air inlet 31, for detecting the temperature of the return air.
The bypass passage 2 is a passage from the return air passage 3 to the air supply and supply passage 1, one end of the bypass passage 2 is communicated with the return air passage 3, and the other end is communicated with the air supply and supply passage 1 through the intersection 21.
And a control unit 7 connected to the fresh air port air valve 111, the fresh air temperature sensor 121, the supply air temperature sensor 151, the return air humidity sensor 36, the return air temperature sensor 37, the supply air fan 17, and the return air fan 35.
The control unit 7 controls the operation of the air blowing device 10a based on information, commands, and the like transmitted to and received from the respective operation units of the air blowing device 10 a. The operating units here include, for example, the fresh air port damper 111, the air supply fan 17, and the return air fan 35. For example, the control unit 7 obtains detection objects, such as temperature and humidity, detected by the supply air temperature sensor 151, the return air humidity sensor 36, and the return air temperature sensor 37. The controller 7 controls the opening of the fresh air port damper 111 and the rotational speeds of the air supply fan 17 and the return air fan 35, respectively, to control the inflow amount of fresh air and/or return air in the mixture passage 13.
The above is a description of the structure of the blower 10 a.
Next, the operation of the blower 10a will be described.
When the blower 10a according to the first embodiment of the present invention is operated in the air mixing mode, the control unit 7 opens the fresh air inlet air valve 111 and drives the air supply fan 17. The fresh air is introduced into the fresh air passage 12 of the air supply/blow passage 1 in the casing 6 through the fresh air inlet 11 by driving the air supply fan 17. The blower 10a drives the return air fan 35 via the controller 7. The indoor air is introduced into the return air passage 3 and the bypass passage 2 in the casing 6 in this order from the return air inlet 31 by the drive of the return air fan 35, enters the bypass passage 2 through the return air passage upstream section 32, the return air heat exchange passage 33, and the return air passage downstream section 34, and is collected into the supply air blowing passage 1 through the bypass passage 2. The return air and the fresh air gathered in the air supply and supply passage 1 are mixed in the mixed air passage 13 to form mixed fresh air, and the mixed fresh air is purified by the purifier 18 and then is sent into the room through the air supply and heat exchange air passage 14, the air supply air passage 15 and the air supply port 16.
The air temperature sensor 151 detects the temperature of air flowing into the room from the air outlet 16, and obtains the air temperature. The return air humidity sensor 36 detects the humidity of the return air flowing into the casing 6 from the return air inlet 31 to obtain the return air humidity. The return air temperature sensor 37 detects the temperature of the return air flowing into the casing 6 from the return air inlet 31, and obtains the return air temperature.
The control unit 7 includes: a condensation determination unit and an inflow control unit.
And a condensation determination unit that determines whether or not condensation has occurred in the mixed air duct 13 based on the supply air temperature, the return air temperature, and the return air humidity.
And an inflow amount controller for controlling the inflow amount of the fresh air and/or the return air to the mixture passage 13 based on the determination result of the dew condensation determinator.
Specifically, the dew condensation determination unit includes:
a dew point calculating unit for calculating the dew point temperature of the mixed air duct 13 based on the return air temperature and the return air humidity;
and a comparator for comparing the dew point temperature of the air-fuel mixture passage 13 obtained by the dew point calculator with the air supply temperature, and determining whether condensation occurs in the air-fuel mixture passage 13.
The numerical correspondence between the return air temperature and the return air humidity and the dew point temperature of the air-fuel mixture passage 13 can be determined by an psychrometric chart. The psychrometric chart may be stored in the controller in advance, and the dew point calculator may obtain the dew point temperature of the air-fuel mixture passage 13 by searching the psychrometric chart.
The comparator determines that the air-fuel mixture passage 13 is not dew-condensed when the air temperature is higher than the dew-point temperature of the air-fuel mixture passage 13, and otherwise, determines that the air-fuel mixture passage 13 is dew-condensed.
When the comparator determines that condensation does not occur in the air-fuel mixture passage 13, the inflow control unit may increase the opening degree of the fresh air port damper 111 or decrease the amount of air supplied by the air return fan 35 to increase the air-fuel mixture ratio. When the supply air temperature reaches the dew point temperature of the mixed air path 13, the fresh air maximization is realized.
When the comparator determines that condensation has occurred in the air-fuel mixture passage 13, the inflow controller reduces the opening of the fresh air port damper 111, reduces the inflow of fresh air from the fresh air port 11 to the air-fuel mixture passage 13, and reduces the air-fuel mixture ratio to suppress condensation in the air-fuel mixture passage 13.
When the comparator determines that condensation has occurred in the air-fuel mixture passage 13, the inflow controller may increase the amount of air blown by the air-return fan 35, increase the inflow of the return air from the return air inlet 31 to the air-fuel mixture passage 13, and reduce the air-fuel mixture ratio to suppress condensation in the air-fuel mixture passage 13.
When the comparator determines that condensation has occurred in the mixture passage 13, the inflow control unit may reduce the amount of air blown by the air supply fan 17 to reduce the inflow of fresh mixture air, thereby suppressing condensation in the mixture passage 13.
When the comparator determines that condensation has occurred in the air-fuel mixture passage 13, the inflow rate controller may adopt any two or all three of the above control methods at the same time to more rapidly suppress the condensation in the air-fuel mixture passage 13.
For example, the fresh air temperature of the air supply device 10a is-20 ℃, and the air mixing ratio is 40%. If the return air temperature is 20 ℃ and the return air humidity is 40%, the dew point temperature of the mixed air path 13 can be obtained through an enthalpy diagram. When the comparator determines that condensation does not occur in the mixture passage 13, the inflow rate controller increases the mixture ratio by increasing the opening of the fresh air port damper 111 or decreasing the amount of air supplied by the return air fan 35 until the fresh air is maximized. When the comparator determines that condensation has occurred in the mixture passage 13, the inflow rate controller may decrease the mixture ratio by decreasing the opening degree of the fresh air port damper 111, increasing the air supply amount of the return air fan 35, or decreasing the air supply amount of the supply air fan 17, thereby suppressing the condensation in the mixture passage 13.
In this way, it is possible to determine whether or not dew condensation has occurred inside blower 10a, and automatically adjust the air volume based on this, thereby reducing the risk of dew condensation in mixture air duct 13, avoiding the performance of cleaner 18 and cross section 5 from being affected by dew condensation, and suppressing performance degradation of blower 10 a.
(second embodiment)
For the sake of brief description, the air blowing device 10b according to the second embodiment of the present invention will be described below only as being different from the first embodiment.
Referring to fig. 2, air blowing device 10b includes: the air conditioner comprises a shell 6, an air supply and supply passage 1, a bypass passage 2, an air return passage 3, a cross part 5, a fresh air temperature sensor 121, a mixed air temperature sensor 131, an air return humidity sensor 36, an air return temperature sensor 37, a purifying part 18 and a control part 7.
The air supply and blow passage 1 includes: an air supply fan 17, a fresh air temperature sensor 121, a mixed air temperature sensor 131, and a purification unit 18.
And a mixed air temperature sensor 131 provided in the mixed air duct 13 at a position upstream of the cleaner 18 and detecting the temperature of the mixed air.
And a control unit 7 connected to the fresh air inlet air valve 111, the fresh air temperature sensor 121, the mixed air temperature sensor 131, the return air humidity sensor 36, the return air temperature sensor 37, the air supply fan 17, and the return air fan 35.
The control unit 7 controls the operation of the air blowing device 10b based on information, commands, and the like transmitted to and received from the respective operation units of the air blowing device 10 b. The operating units here include, for example, the fresh air port damper 111, the air supply fan 17, and the return air fan 35. For example, the control unit 7 obtains the temperature and humidity of the detection target objects detected by the mixed air temperature sensor 131, the return air humidity sensor 36, and the return air temperature sensor 37. The controller 7 controls the opening of the fresh air port damper 111 and the rotational speeds of the air supply fan 17 and the return air fan 35, respectively, to control the inflow amount of fresh air and/or return air in the mixture passage 13.
The above is a description of the structure of the blower 10 b.
Next, the operation of the blower 10b will be described.
When the blower 10b according to the second embodiment of the present invention is operated in the air mixing mode, the control unit 7 opens the fresh air inlet air valve 111 and drives the air supply fan 17. The fresh air is introduced into the fresh air passage 12 of the air supply/blow passage 1 in the casing 6 through the fresh air inlet 11 by driving the air supply fan 17. The blower 10b drives the return air fan 35 via the controller 7. The indoor air is introduced into the return air passage 3 and the bypass passage 2 in the casing 6 in this order from the return air inlet 31 by the drive of the return air fan 35, enters the bypass passage 2 through the return air passage upstream section 32, the return air heat exchange passage 33, and the return air passage downstream section 34, and is collected into the supply air blowing passage 1 through the bypass passage 2. The return air and the fresh air gathered in the air supply and supply passage 1 are mixed in the mixed air passage 13 to form mixed fresh air, and the mixed fresh air is purified by the purifier 18 and then is sent into the room through the air supply and heat exchange air passage 14, the air supply air passage 15 and the air supply port 16.
The mixed air temperature sensor 131 detects the temperature of the mixed fresh air in the mixed air duct 13 to obtain the mixed air temperature. The return air humidity sensor 36 detects the humidity of the return air flowing into the casing 6 from the return air inlet 31 to obtain the return air humidity. The return air temperature sensor 37 detects the temperature of the return air flowing into the casing 6 from the return air inlet 31, and obtains the return air temperature.
The control unit 7 includes: a condensation determination unit and an inflow control unit.
And a dew condensation determination unit for determining whether or not dew condensation is generated in the mixed air duct 13 based on the mixed air temperature, the return air temperature, and the return air humidity.
And an inflow amount controller for controlling the inflow amount of the fresh air and/or the return air to the mixture passage 13 based on the determination result of the dew condensation determinator.
Specifically, the dew condensation determination unit includes:
a dew point calculating unit for calculating the dew point temperature of the mixed air duct 13 based on the return air temperature and the return air humidity;
and a comparator for comparing the dew point temperature of the air-fuel mixture passage 13 obtained by the dew point calculator with the air-fuel mixture temperature, and determining whether condensation is generated in the air-fuel mixture passage 13.
When the air-mixing temperature is higher than the dew-point temperature of the air-mixing duct 13, the comparator determines that no dew condensation is generated in the air-mixing duct 13, otherwise, the comparator determines that dew condensation is generated in the air-mixing duct 13.
When the comparator determines that condensation does not occur in the air-fuel mixture passage 13, the inflow control unit may increase the opening degree of the fresh air port damper 111 or decrease the amount of air supplied by the air return fan 35 to increase the air-fuel mixture ratio. When the supply air temperature reaches the dew point temperature of the mixed air path 13, the fresh air maximization is realized.
When the comparator determines that condensation has occurred in the air-fuel mixture passage 13, the inflow controller reduces the opening of the fresh air port damper 111, reduces the inflow of fresh air from the fresh air port 11 to the air-fuel mixture passage 13, and reduces the air-fuel mixture ratio to suppress condensation in the air-fuel mixture passage 13.
When the comparator determines that condensation has occurred in the air-fuel mixture passage 13, the inflow controller may increase the amount of air blown by the air-return fan 35, increase the inflow of the return air from the return air inlet 31 to the air-fuel mixture passage 13, and reduce the air-fuel mixture ratio to suppress condensation in the air-fuel mixture passage 13.
When the comparator determines that condensation has occurred in the air-fuel mixture passage 13, the inflow control unit may reduce the amount of air supplied by the air supply fan 17 to reduce the inflow of fresh air mixture, thereby suppressing condensation in the air-fuel mixture passage 13.
When the comparator determines that condensation has occurred in the air-fuel mixture passage 13, the inflow rate controller may adopt any two or all three of the above control methods at the same time to more rapidly suppress the condensation in the air-fuel mixture passage 13.
In this way, it is possible to determine whether or not dew condensation has occurred inside blower 10b, and automatically adjust the air volume based on this, thereby reducing the risk of dew condensation in mixture air duct 13, avoiding the performance of cleaner 18 and cross section 5 from being affected by dew condensation, and suppressing the performance degradation of blower 10 b.
(third embodiment)
For the sake of brief description, the following description will only describe the air blowing device 10c according to the third embodiment of the present invention, which is different from the above-described embodiments.
As shown in fig. 3, the air blowing device 10c of the present embodiment further includes: an air outlet 41, an air outlet air valve 42 and an air outlet passage 4.
The air outlet 41 is provided on one surface constituting the casing 6, and is opposed to the surface on which the return air inlet 31 is provided. That is, the air outlet 41 is provided on the same plane as the fresh air inlet 11. The air outlet 41 is an opening that communicates with the second environment B through the duct 10 and discharges air from the inside of the casing 6 to the second environment B.
One end of the air exhaust passage 4 is communicated with the air exhaust port 41, and the other end is communicated with the air return passage 3. The discharge port damper 42 is provided in the discharge passage 4 and opens and closes the bypass passage 2 and the discharge passage 4. The air discharge passage 4 is closed when the bypass passage 2 is opened, and the air discharge passage 4 is opened when the bypass passage 2 is closed. The controller 7 controls the position of the discharge port damper 42 to allow the indoor air in the return passage 3 to enter the bypass passage 2 or to be discharged to the second environment B through the discharge passage 4 and the discharge port 41. The outlet air valve 42 may be held at any position between the bypass passage 2 and the exhaust passage 4, that is, the outlet air valve 42 may adjust the opening degrees of the bypass passage 2 and the exhaust passage 4.
The above is a description of the structure of the blower 10 c.
Next, the operation of the blower 10c will be described.
As shown in fig. 3, when the discharge port damper 42 is in the first position, the discharge passage 4 is closed, and the air blowing device 10c operates in the air mixing mode. The controller 7 drives the return air fan 35, and by driving the return air fan 35, the indoor air is introduced from the first environment a into the casing 6 through the return air inlet 31 and then enters the return air passage 3. Since the discharge passage 4 is closed, the indoor air in the return passage 3 cannot be discharged from the discharge port 41 to the second environment B, but enters the bypass passage 2 and is merged into the supply air blow-in passage 1 through the bypass passage 2. The return air gathered into the air supply and supply passage 1 and the fresh air in the fresh air passage 12 form mixed fresh air in the mixed air passage 13, and the mixed fresh air is supplied into the room through the air supply outlet 16. The blower device 10c can determine whether or not dew condensation is generated inside the blower device 10c in the manner of the first and second embodiments, and automatically adjust the air volume based on this.
As shown in fig. 4, when the discharge port damper 42 is in the second position, the discharge passage 4 is opened, and the air blowing device 10c operates in the ventilation mode. The controller 7 drives the return air fan 35, and by driving the return air fan 35, the indoor air is introduced from the first environment a into the casing 6 through the return air inlet 31 and then enters the return air passage 3. Since the discharge passage 4 is opened, the indoor air in the return air passage 3 does not enter the bypass passage 2 but is discharged to the second environment B via the discharge passage 4 and the exhaust port 41.
The air supply device 10c of the embodiment is provided with the air outlet 41 and the air outlet air valve 42, and the position of the air outlet air valve 42 is controlled, so that the air supply device 10c can discharge indoor air to the second environment B and can also mix the indoor air and the outdoor air, the functions are various, one machine has two functions, and the use convenience is improved.
In the above description, the air blowing device 10a according to the first embodiment is added with the air discharge port 41, the air discharge port damper 42, and the air discharge passage 4, but the present invention is not limited thereto. The air outlet 41, the air outlet air valve 42 and the air outlet passage 4 can also be disposed in the air supply device 10b of the second embodiment, and the configuration and control process thereof are similar to those of the present embodiment and will not be described again.
Up to this point, the present embodiment has been described in detail with reference to the accompanying drawings. From the above description, those skilled in the art should clearly recognize the present invention.
It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. In addition, the above definitions of the various elements are not limited to the specific structures, shapes or modes mentioned in the embodiments, and those skilled in the art may easily modify or replace them, for example:
(1) directional phrases used in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., refer only to the orientation of the attached drawings and are not intended to limit the scope of the present invention;
(2) the embodiments described above may be mixed and matched with each other or with other embodiments based on design and reliability considerations, i.e. technical features in different embodiments may be freely combined to form further embodiments.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. An air supply device, comprising:
a housing forming an outer shell;
a fresh air port communicated with a second environment;
an air return opening communicated with a first environment;
a mixed wind path for mixing the fresh air flowing into the shell from the fresh air inlet and the return air flowing into the shell from the return air inlet to form a mixed fresh air wind path;
an air supply outlet that communicates the mixture air duct with the first environment;
a supply air temperature sensor for acquiring a temperature of supply air flowing into the room from the supply air outlet;
a return air humidity sensor for acquiring the humidity of the return air;
a return air temperature sensor for acquiring the temperature of the return air;
a dew condensation determination unit for determining whether dew condensation is generated in the air-mix duct based on the temperature of the supplied air, the temperature of the return air, and the humidity of the return air;
and an inflow amount controller for controlling an inflow amount of the fresh air and/or the return air to the mixture air passage based on a determination result of the dew condensation determinator.
2. The blower device according to claim 1, wherein the dew condensation determining unit includes:
a dew point calculating unit that obtains a dew point temperature of the mixed air path based on the temperature of the return air and the humidity of the return air;
and a comparing unit for comparing the dew point temperature of the air-fuel mixture path obtained by the dew point calculating unit with the temperature of the supplied air, and determining whether condensation occurs in the air-fuel mixture path.
3. An air supply device, comprising:
a housing forming an outer shell;
a fresh air port communicated with a second environment;
an air return opening communicated with a first environment;
a mixed wind path for mixing the fresh air flowing into the shell from the fresh air inlet and the return air flowing into the shell from the return air inlet to form a mixed fresh air wind path;
an air supply outlet that communicates the mixture air duct with the first environment;
the mixed air temperature sensor is used for acquiring the temperature of the mixed fresh air;
a return air humidity sensor for acquiring the humidity of the return air;
a return air temperature sensor for acquiring the temperature of the return air;
a dew condensation determination unit that determines whether or not dew condensation has occurred in the mixed air duct based on the temperature of the mixed fresh air, the temperature of the return air, and the humidity of the return air;
and an inflow amount controller for controlling an inflow amount of the fresh air and/or the return air to the mixture air passage based on a determination result of the dew condensation determinator.
4. The blower device according to claim 3, wherein the dew condensation determining unit includes:
a dew point calculating unit that obtains a dew point temperature of the mixed air path based on the temperature of the return air and the humidity of the return air;
and a comparing unit for comparing the dew point temperature of the air-fuel mixture path obtained by the dew point calculating unit with the temperature of the fresh air mixture to determine whether condensation is generated in the air-fuel mixture path.
5. The air supply apparatus of any of claims 1 to 4, further comprising:
the fresh air inlet air valve is used for adjusting the inflow of fresh air from the fresh air inlet to the mixed air path;
and an inflow control unit that reduces the opening of the fresh air port damper when it is determined that condensation has occurred, based on the determination result of the condensation determination unit.
6. The air supply apparatus of any of claims 1 to 4, further comprising:
an air supply/blow passage that communicates the air supply port and the fresh air port, the air-fuel mixture passage constituting a part of the air supply/blow passage;
an air supply fan for introducing air into the air supply outlet through the fresh air inlet to the air supply/blow-out passage;
and an inflow control unit that reduces the amount of air blown by the air supply fan when it is determined that condensation has occurred based on the determination result of the condensation determination unit.
7. The air supply apparatus of any of claims 1 to 4, further comprising:
the return air passage is communicated with the return air inlet;
a bypass passage that communicates the return air passage and the mixture air passage;
a return air fan for introducing air into the mixture air passage through the return air inlet to the return air passage and the bypass passage;
and an inflow control unit that increases the amount of air blown by the air return fan when it is determined that condensation has occurred, based on the determination result of the condensation determination unit.
8. The air supply arrangement as recited in claim 1, further comprising:
a cleaning unit disposed downstream of the air-fuel mixture passage and configured to clean air flowing in from the fresh air inlet;
the fresh air opening is located on an upstream side of the mixture air passage.
9. The air supply arrangement as recited in claim 1, further comprising:
an air supply and supply passage for communicating the air supply outlet and the fresh air inlet;
an air outlet which is communicated with the second environment;
the return air passage is communicated with the return air inlet;
a bypass passage that communicates the return air passage and the mixture air passage;
an air discharge passage branched from the air return passage and connected to the air outlet;
an air outlet air valve for opening and closing the bypass passage and the air exhaust passage; when the bypass passage is opened, the air exhaust passage is closed, and when the bypass passage is closed, the air exhaust passage is opened;
and a cross portion for exchanging heat between the air flowing through the return air passage and the air flowing through the supply air blowing passage.
CN201811282223.6A 2018-10-30 2018-10-30 Air supply device Pending CN111121260A (en)

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Application Number Priority Date Filing Date Title
CN201811282223.6A CN111121260A (en) 2018-10-30 2018-10-30 Air supply device

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CN111121260A true CN111121260A (en) 2020-05-08

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CN111912076A (en) * 2020-05-25 2020-11-10 海信（山东）空调有限公司 Air conditioner and control method
CN114484836A (en) * 2022-03-02 2022-05-13 青岛海信日立空调系统有限公司 Total heat exchanger

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CN108548296A (en) * 2018-04-27 2018-09-18 广东美的制冷设备有限公司 Air conditioner and its control method and computer readable storage medium
CN108592195A (en) * 2018-04-27 2018-09-28 广东美的制冷设备有限公司 Air conditioner and its condensation judgment method and computer readable storage medium

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JP2012189290A (en) * 2011-03-14 2012-10-04 Panasonic Corp Heat exchange ventilation device
CN105465939A (en) * 2014-09-26 2016-04-06 松下知识产权经营株式会社 Air feeder
CN105020810A (en) * 2015-04-30 2015-11-04 牛玉明 Double-draught-fan type fresh air purifying machine
CN107131555A (en) * 2016-02-26 2017-09-05 大金工业株式会社 Air cleaning unit
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CN111912076A (en) * 2020-05-25 2020-11-10 海信（山东）空调有限公司 Air conditioner and control method
CN114484836A (en) * 2022-03-02 2022-05-13 青岛海信日立空调系统有限公司 Total heat exchanger

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