CN209763430U - Air supply device - Google Patents
Air supply device Download PDFInfo
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- CN209763430U CN209763430U CN201822121092.5U CN201822121092U CN209763430U CN 209763430 U CN209763430 U CN 209763430U CN 201822121092 U CN201822121092 U CN 201822121092U CN 209763430 U CN209763430 U CN 209763430U
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- mixed
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- 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
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- Air Conditioning Control Device (AREA)
Abstract
The utility model provides an air supply arrangement, include: a housing forming an outer shell; an air return opening communicated with a first environment; a fresh air port communicated with a second environment; the return air passage is communicated with the return air inlet; a mixed air path for mixing the fresh air flowing into the casing from the fresh air inlet and the return air flowing into the casing from the return air inlet to form a mixed fresh air path; an air supply outlet that communicates the mixture air duct with the first environment; a bypass passage that communicates the return air passage and the mixture air passage; 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; a junction port connecting the bypass passage and the mixture air passage; a wind guide part for guiding the return wind flowing from the intersection port to the mixed wind path to the fresh wind port side; the fresh air opening is located on an upstream side of the mixture air passage.
Description
Technical Field
The utility model relates to an air conditioning technology field especially relates to an air supply arrangement.
Background
The air supply device in the prior art has an air mixing mode for mixing indoor return air and outdoor fresh air and supplying air indoors.
under the mode of mixing the wind, air supply arrangement can not carry out the intensive mixing with indoor return air and outdoor new trend, has partial indoor return air and partial outdoor new trend directly to flow in the purification portion respectively. When the indoor side temperature is higher, and the outdoor side temperature is lower, when the partial indoor return air of higher temperature and the partial outdoor new trend of lower temperature passed through the purification portion respectively, the both sides of purification portion can direct contact indoor return air and outdoor new trend respectively, and this both sides of purification portion will produce the dewfall and frost this moment to influence air supply arrangement's performance.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The air supply device in the prior art has the problems that the condensation and frosting risks in the air supply device are increased and the performance of the air supply device is influenced because indoor return air and outdoor fresh air are not fully mixed.
In order to solve the problem, the utility model provides an air supply arrangement, the purpose makes indoor return air and outdoor new trend can the intensive mixing, restraines the condensation of purification portion or frosts to restrain air supply arrangement's performance degradation.
(II) technical scheme
the utility model provides an air supply arrangement, include: a housing forming an outer shell; an air return opening communicated with a first environment; a fresh air port communicated with a second environment; the return air passage is communicated with the return air inlet; a mixed air path for mixing the fresh air flowing into the casing from the fresh air inlet and the return air flowing into the casing from the return air inlet to form a mixed fresh air path; an air supply outlet that communicates the mixture air duct with the first environment; a bypass passage that communicates the return air passage and the mixture air passage; 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; a junction port connecting the bypass passage and the mixture air passage; a wind guide part for guiding the return wind flowing from the intersection port to the mixed wind path to the fresh wind port side; the fresh air opening is located on an upstream side of the mixture air passage.
In some embodiments of the present invention, the air guiding portion is an adjustable air guiding portion; the adjustable air guide part is connected with one end of the intersection port in the downstream direction of the mixing air path in a rotating mode, and the end of the intersection port in the downstream direction of the mixing air path serves as an axis to rotate; when the adjustable air guiding part rotates towards the direction close to the intersection port and closes the intersection port, the adjustable air guiding part is in a closed state, and the bypass passage is not communicated with the air supply and blowing passage; when the adjustable air guiding part rotates towards the direction far away from the intersection opening and opens the intersection opening, the adjustable air guiding part is in an open state, the bypass passage is communicated with the air supply passage, the adjustable air guiding part guides return air flowing from the intersection opening to the mixed air path to the fresh air opening side, the return air flows in the area close to the central axis of the mixed air path, and the return air flowing in the area close to the central axis of the mixed air path and fresh air flowing into the shell from the fresh air opening are mixed in the mixed air path.
In some embodiments of the present invention, when the adjustable air guiding portion is in the open state, the adjustable air guiding portion and the plane where the intersection is located are at a predetermined angle, so as to open the intersection.
in some embodiments of the present invention, the air guiding portion is a fixed air guiding portion; the fixed air guide part is fixed at one end of the downstream side of the intersection port, forms a preset angle with the plane where the intersection port is located, and guides return air flowing from the intersection port to the mixed air path to the direction of the central axis of the mixed air path on the upstream side of the mixed air path.
In some embodiments of the invention, the predetermined angle is an acute angle.
In some embodiments of the present invention, the passage on the downstream side of the bypass passage is an inclined air passage wall that narrows gradually from the return air inlet side to the mixed air passage side.
In some embodiments of the present invention, the method further comprises: a purification unit that is provided downstream of the mixture air path and purifies the fresh mixture air; and the intersection port is arranged on the air path wall between the fresh air inlet and the purifying part.
In some embodiments of the present invention, the method further comprises: a supply air temperature sensor for acquiring a temperature of supply air flowing from the supply air outlet into a first environment; 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.
In some embodiments of 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.
in some embodiments of the present invention, include: 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 some embodiments of 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 fresh air mixture to determine whether condensation is generated in the air-fuel mixture path.
In some embodiments of the present invention, the method further comprises: 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.
In some embodiments of the present invention, the method further comprises: 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.
In some embodiments of the present invention, the method further comprises: 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.
In some embodiments of the present invention, the method further comprises: an air outlet which is communicated with the second environment; 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 an intersection portion for exchanging heat between the air flowing through the air-mix duct and the air-supply/blow-out passage.
(III) advantageous effects
the utility model discloses an adjustable wind guide portion, fixed wind guide portion and slope wind path wall guide indoor return air flow direction fresh air inlet one side, can indoor return air of intensive mixing and outdoor new trend, restrain the dewfall or the frosting of purification portion to restrain air supply arrangement's performance degradation.
drawings
Fig. 1 is a schematic structural view of an air supply device according to a first embodiment of the present invention.
Fig. 2 is an enlarged schematic view of a dotted line portion in fig. 1.
fig. 3 is another schematic structural diagram of the air supply device according to the first embodiment of the present invention.
Fig. 4 is an enlarged schematic view of a dotted line portion in fig. 3.
Fig. 5 is a schematic structural view of an air supply device according to a second embodiment of the present invention.
fig. 6 is an enlarged schematic view of a dotted line portion in fig. 5.
Fig. 7 is a schematic structural view of an air supply device according to a third embodiment of the present invention.
Fig. 8 is an enlarged schematic view of a dotted line portion in fig. 7.
Fig. 9 is a schematic structural view of an air supply device according to a fourth embodiment of the present invention.
Fig. 10 is a schematic structural view of an air blower according to a fifth embodiment of the present invention.
fig. 11 is another schematic structural view of an air blowing device according to a fifth 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; 131-the central axis of the mixing air path; 14-air supply heat exchange air path; 15-air supply air path; 16-air supply outlet; 17-air supply fan; 18-a purification section; 121-fresh air temperature sensor; 141-mixed air temperature sensor; 151-supply air temperature sensor;
2-a bypass path; 21-an intersection port; 211-one end of the junction port located in the downstream direction of the mixing air path; 22-an adjustable air guide part; 221-one end of the air adjustable guide part located in the downstream direction of the mixing air path; 23-a fixed wind guide part; 24-inclined air path wall;
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-pipeline.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments and the accompanying drawings. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
(first embodiment)
Referring to fig. 1, an air supply device 10a according to a first embodiment of the present invention is disposed in a first environment a for guiding air in a second environment B into the first environment. 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 blowing passage 1, a bypass passage 2, a return air passage 3, an intersection 5, an air guide adjusting part 22, a purifying part 18 and a control part 7.
The casing 6 is, for example, a rectangular parallelepiped shape, and the casing 6 forms an outer shell of the blower 10 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 installation surface of the fresh air port 11.
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 mixed air passage 13 is an air passage from the junction 21 of the supply air passage 1 and the bypass passage 2 to the purge portion 18, and mixes the fresh air flowing into the casing 6 from the fresh air inlet 11 and the return air flowing into the casing 6 from the return air inlet 31 to form mixed fresh air.
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 bypass passage 2 is a passage from the return air passage 3 to the supply air supply passage 1, and one end of the bypass passage 2 communicates with the return air passage 3, and the other end communicates with the supply air supply passage 1 through the junction port 21, thereby communicating the return air passage 3 and the mixture passage 13.
and a junction port 21 connecting the bypass passage 2 and the mixture air passage 13. The junction port 21 is provided in the duct wall between the fresh air inlet 11 and the cleaner 18, and is located at a position where the fresh air duct 12 is switched to the mixture duct 13, and the bypass passage 2 is connected thereto. That is, the position of the connection junction port 21 is located on the downstream side of the fresh air duct 12 and on the upstream side of the mixture air duct 13.
In the present embodiment, as shown in fig. 1 and 3, the air guide portion 22 is also used as an air valve for opening and closing the intersection port 21 of the intersection port 21, and the size thereof is matched with the size of the intersection port 21, and can be driven by a motor. An open state in which junction port 21 is opened to guide return air flowing from junction port 21 to mixture air passage 13 to the fresh air inlet 11 side, and a closed state in which the junction port 21 is opened; the closed state is a state in which the junction port 21 is closed.
One end 221 of the variable air guide portion 22 located in the downstream direction of the mixture air duct 13 is rotatably connected to one end 211 of the junction port 21 located in the downstream direction of the mixture air duct 13, and the variable air guide portion 22 rotates about the end 211 of the junction port 21 located in the downstream direction of the mixture air duct 13.
as shown in fig. 4, when the air-guiding adjustable portion 22 rotates in a direction approaching the junction port 21 and closes the junction port 21, the air-guiding adjustable portion 22 is in an off state, and the bypass passage 2 is not communicated with the air supply/blow passage 1.
As shown in fig. 2, when the air guide portion 22 rotates in a direction away from the junction opening 21 to open the junction opening 21, the air guide portion 22 is in an open state, the bypass passage 2 communicates with the air supply/blow passage 1, the air guide portion 22 guides the return air flowing from the junction opening 21 to the mixture air passage 13 to the fresh air opening 11 side, the return air flows in a region close to the central axis 131 of the mixture air passage 13, and the return air flowing in a region close to the central axis 131 of the mixture air passage 13 and the fresh air flowing from the fresh air opening 11 into the casing 6 are mixed in the mixture air passage 13. Here, the mixing duct 13 is a duct having a square or circular cross section, and the central axis 131 of the mixing duct 13 indicates the axis of the duct extending direction.
when the air guiding portion 22 is in the open state, a predetermined angle is formed between the air guiding portion 22 and the plane where the intersection 21 is located, so as to open the intersection 21. The predetermined angle is preferably an acute angle so that the return air flowing into the mixture passage 13 from the junction port 21 flows along the variable air guide 22 toward the fresh air inlet 11.
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 configured to clean air passing through the cleaner 18 in the supply air 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.
And a control unit 7 connected to the fresh air inlet 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, the return air fan 35, and the air guide adjustable unit 22.
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, the return air fan 35, and the air guide adjusting unit 22. For example, the controller 7 controls the opening of the air guide duct 22, obtains the temperature and humidity of the object to be detected, which are detected by the supply air temperature sensor 151, the return air humidity sensor 36, and the return air temperature sensor 37, and controls the opening of the fresh air port air valve 111 and the rotational speeds of the supply air fan 17 and the return air fan 35, respectively, to control the inflow amount of the fresh air and/or the return air in the mixture air duct 13.
The above is a description of the structure of the blower 10 a.
Next, the operation of the blower 10a will be described.
the utility model discloses when air supply arrangement 10a of first embodiment worked in the mode of mixing the wind, opened fresh air inlet blast gate 111 and driven fan 17 for the air feed through control portion 7. 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 adjustable air guide part 22 opens the intersection opening 21, the adjustable air guide part 22 is in an open state, and the plane where the adjustable air guide part 22 and the intersection opening 21 are located forms a predetermined angle, so that the intersection opening 21 is opened, return air flowing into the mixed air path 13 from the intersection opening 21 flows to the fresh air opening 11 side along the adjustable air guide part 22, the return air flows in a region close to a central axis 131 of the mixed air path 13, the return air flowing in the region close to the central axis 131 of the mixed air path 13 and fresh air flowing into the shell 6 from the fresh air opening 11 are mixed in the mixed air path 13, and the mixed fresh air is purified by the purifying part 18 and then is sent into a room through the air supply and heat exchange air path 14, the air path 15 and the air supply opening 16.
With the above structure, the return air and the fresh air are more fully mixed before entering the purifying part 18 by the air-adjustable guiding part 22, and only the fully mixed fresh air entering the purifying part 18 does not have the indoor return air with higher temperature and the outdoor fresh air with lower temperature to pass through the purifying part 18, so that the risk of dewing and frosting of the mixed air path 13 is reduced, the performance of the purifying part 18 is prevented from being influenced by dewing and frosting, and the performance reduction of the air supply device 10a is inhibited. The area of the air blocking flow of the air-adjustable guiding part 22 is small, the generated resistance is small, the inflow of fresh air is not greatly influenced, and the difficulty of the inflow of the fresh air is avoided.
On the other hand, when the fresh air temperature is too low, the temperature of the mixed fresh air after being sufficiently mixed is also low, and dew condensation may occur in the purification unit 18 when the mixed fresh air flows through the purification unit 18. Further, the air temperature sensor 151 detects the temperature of the 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 humidity of the return air flowing into the casing 6 from the return air inlet 31, and obtains the temperature of the return air.
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 air-fuel mixture passage 13, the inflow rate controller may reduce the air-fuel mixture ratio by reducing the opening of the fresh air inlet air valve 111, or by increasing the air output of the return air fan 35, or by reducing the air output of the supply air fan 17, so as to suppress condensation in the air-fuel mixture passage 13.
With the above configuration, 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 the performance degradation of blower 10 a.
(second embodiment)
For the sake of brief description, the air blowing device 10b of the second embodiment of the present invention will be described below only with reference to the differences from the first embodiment.
Referring to fig. 5 and 6, the blower device 10b of the present embodiment includes, instead of the air guide adjustable portion 22: the air guide portion 23 is fixed.
The fixed air guiding part 23 cannot rotate around the side of the intersection far away from the fresh air inlet. And a fixed air guide 23 fixed to one end of the downstream side of the junction port 21, for guiding the return air flowing from the junction port 21 to the mixture air passage 13 in a direction of a central axis 131 of the mixture air passage 13 on the upstream side of the mixture air passage 13, and for opening the junction port 21 by forming a predetermined angle with a plane where the junction port 21 is located. The predetermined angle is preferably an acute angle so that the return air flowing into the mixture passage 13 from the junction port 21 flows along the fixed air guide 23 toward the fresh air inlet 11.
The above is a description of the structure of the blower 10 b.
next, the operation of the blower 10b will be described.
The utility model discloses when air supply arrangement 10b of second embodiment worked in the mode of mixing the wind, opened fresh air inlet blast gate 111 and driven fan 17 for the air feed through control portion 7. 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. One side of the fixed air guiding part 23 is fixedly connected to the side of the intersection 21 far from the fresh air inlet 11, and a plane where the fixed air guiding part 23 and the intersection 21 are located forms a predetermined angle, so that the intersection 21 is opened, return air flowing into the mixed air path 13 from the intersection 21 flows to the fresh air inlet 11 side along the fixed air guiding part 23, the return air flows in a region close to a central axis 131 of the mixed air path 13, the return air flowing in the region close to the central axis 131 of the mixed air path 13 and fresh air flowing into the casing 6 from the fresh air inlet 11 are mixed in the mixed air path 13, and the mixed fresh air is purified by the purifying part 18 and then is sent into a room through the air supply heat exchange air path 14, the air supply air path 15 and the air supply opening 16.
Through the structure, the return air and the fresh air are more fully mixed before entering the purifying part 18 by utilizing the fixed air guiding part 23, only the fully mixed fresh air entering the purifying part does not have the indoor return air with higher temperature and the outdoor fresh air with lower temperature to pass through the purifying part, so that the risks of dewing and frosting of the mixed air path 13 are reduced, the influence on the performance of the purifying part 18 due to dewing and frosting is avoided, and the performance reduction of the air supply device 10b is inhibited. And the fixed air guiding part 23 does not need to be driven by a motor, so that the structure can be simplified, and the cost can be saved.
(third embodiment)
For the sake of brief description, the air blowing device 10c according to the third embodiment of the present invention will be described below only as different from the first and second embodiments.
The blower device 10c of the present embodiment may not include the air-guide adjustable portion 22 and the fixed air-guide portion 23, or may include one of the air-guide adjustable portion 22 and the fixed air-guide portion 23, which will be described below.
When the air blower 10c does not include the air blower 10c having the variable air guide 22 and the fixed air guide 23, as shown in fig. 7 and 8, the bypass passage 2 has an inclined passage wall 24 in a position close to the junction 21, the inclined passage wall 24 is gradually narrowed from the return air inlet 31 side to the mixed air passage 13 side to guide the return air flowing from the junction 21 to the mixed air passage 13 to the fresh air inlet 11 side, so that the return air flows in a region close to the central axis 131 of the mixed air passage 13 and the pressure of the return air is increased, and the return air flowing in a region close to the central axis 131 of the mixed air passage 13 and the increased pressure of the return air is mixed with the fresh air flowing into the housing 6 from the fresh air inlet 11 in the mixed air passage 13. Thus, the return air in the bypass passage 2 does not flow straight into the mixture passage 13 from the junction port 21, but flows toward the fresh air inlet 11 along the inclined passage wall 24 of the bypass passage.
The above is a description of the structure of the blower 10 c.
Next, the operation of the blower 10c will be described.
The utility model discloses when air supply arrangement 10c of third embodiment worked in the mode of mixing the wind, opened fresh air inlet blast gate 111 and driven fan 17 for the air feed through control portion 7. 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 10c 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. Under the effect of the slope wind path wall 24 of bypass route 2, the return air in bypass route 2 flows to the fresh air inlet 11 side along slope wind path wall 24, makes the return air is being close to the regional flow of the central axis 131 of mixed wind path 13, and makes the wind pressure increase of return air is close to the return air that the regional flow of the central axis 131 of mixed wind path 13 and wind pressure increase with follow fresh air inlet 11 flows in the inside new trend of casing 6 is in mix in the mixed wind path 13, mix the new trend and purify the back through purification portion 18, send into indoor through air feed heat exchange wind path 14, air supply wind path 15, air supply outlet 16.
Through the structure, the return air and the fresh air are fully mixed before entering the purifying part 18, only the fully mixed fresh air entering the purifying part does not have the indoor return air with higher temperature and the outdoor fresh air with lower temperature to pass through the purifying part, so that the risks of dewing and frosting of the mixed air path 13 are reduced, the performance influence of the dewing and frosting of the purifying part 18 is avoided, and the performance reduction of the air supply device 10c is inhibited. And no extra part is needed to be installed, and only the wind path wall of the bypass passage needs to be processed to be inclined, so that the structure can be simplified, and the cost can be saved.
When the blower 10c of the present embodiment includes the variable air guide 22 of the first embodiment, the path of the bypass path 2 near the junction port 21 has an inclined path wall 24, and the inclined path wall 24 is gradually narrowed from the return air inlet 31 side to the mixture path 13 side to guide the return air flowing from the junction port 21 to the mixture path 13 to the fresh air inlet 11 side and increase the air pressure of the return air. When the adjustable air guiding part 22 rotates in a direction away from the intersection opening 21 and opens the intersection opening 21, the adjustable air guiding part 22 is in an open state, the bypass passage 2 is communicated with the air supply passage 1, the adjustable air guiding part 22 guides the return air guided by the inclined air passage wall 24 and increased in air pressure to the fresh air opening 11 side, so that the return air flows in a region close to the central axis 131 of the mixed air passage 13, and the return air flowing in the region close to the central axis 131 of the mixed air passage 13 and the fresh air flowing into the shell 6 from the fresh air opening 11 are mixed in the mixed air passage 13.
the above is another description of the structure of the blower 10 c.
Next, the operation of the blower 10c will be described.
The utility model discloses when air supply arrangement 10c of third embodiment worked in the mode of mixing the wind, opened fresh air inlet blast gate 111 and driven fan 17 for the air feed through control portion 7. 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 10c 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 is guided to the fresh air inlet 11 side by the inclined duct wall 24 of the bypass passage 2, and the pressure of the return air is increased. The adjustable air guide part 22 opens the intersection opening 21, the adjustable air guide part 22 is in an open state, a preset angle is formed between the adjustable air guide part 22 and the plane of the intersection opening 21, so that the intersection opening 21 is opened, the return air guided by the inclined air path wall 24 and increased in air pressure flows to the fresh air port 11 side along the adjustable air guide part 22, the return air flows in the area close to the central axis 131 of the mixed air path 13, the return air flowing in the area close to the central axis 131 of the mixed air path 13 and the fresh air flowing into the shell 6 from the fresh air port 11 are mixed in the mixed air path 13, and the mixed fresh air is purified by the purifying part 18 and then is sent into the room through the air supply and heat exchange air path 14, the air path 15 and the air supply opening 16.
When the blower 10c of the present embodiment includes the fixed air guide 23 of the second embodiment, the path of the bypass path 2 near the junction port 21 has an inclined path wall 24, and the inclined path wall 24 is gradually narrowed from the return air inlet 31 side to the mixture path 13 side to guide the return air flowing from the junction port 21 to the mixture path 13 to the fresh air inlet 11 side and increase the pressure of the return air. The fixed air guide 23 guides the return air, which is guided by the inclined air path wall 24 and has increased air pressure, toward the fresh air inlet 11, so that the return air flows in a region close to the central axis 131 of the mixture air path 13, and the return air flowing in the region close to the central axis 131 of the mixture air path 13 and the fresh air flowing into the case 6 from the fresh air inlet 11 are mixed in the mixture air path 13.
The above is another description of the structure of the blower 10 c.
Next, the operation of the blower 10c will be described.
The utility model discloses when air supply arrangement 10c of third embodiment worked in the mode of mixing the wind, opened fresh air inlet blast gate 111 and driven fan 17 for the air feed through control portion 7. 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 10c 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 is guided to the fresh air inlet 11 side by the inclined duct wall 24 of the bypass passage 2, and the pressure of the return air is increased. The return air of 24 guides of slope wind path walls and wind pressure increase, along the 23 flow direction fresh air inlets 11 sides of fixed wind-guiding portion, makes the return air is being close to the regional flow of the central axis 131 of mixed wind path 13 is close to the return air of the regional flow of the central axis 131 of mixed wind path 13 with follow fresh air inlets 11 flow in the inside new trend of casing 6 is in mix in the mixed wind path 13, mix the new trend and purify the back through purification portion 18, send into indoor through air feed heat exchange wind path 14, air supply wind path 15, air supply outlet 16.
Through the structure, the return air and the fresh air are fully mixed before entering the purifying part 18, only the fully mixed fresh air entering the purifying part does not have the indoor return air with higher temperature and the outdoor fresh air with lower temperature to pass through the purifying part, so that the risks of dewing and frosting of the mixed air path 13 are reduced, the performance influence of the dewing and frosting of the purifying part 18 is avoided, and the performance reduction of the air supply device 10c is inhibited. And no extra part is needed to be installed, and only the wind path wall of the bypass passage needs to be processed to be inclined, so that the structure can be simplified, and the cost can be saved.
(fourth embodiment)
in the following, for the sake of brief description, only the different contents from the above-described embodiments will be described with reference to the air blowing device 10d according to the fourth embodiment of the present invention.
Referring to fig. 9, air blowing device 10d includes: the air conditioner comprises a shell 6, an air supply and supply passage 1, a bypass passage 2, an air return passage 3, an air adjustable guiding part 22, a cross part 5, a fresh air temperature sensor 121, an air mixing temperature sensor 141, 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, an air mixing temperature sensor 141, and a purification unit 18.
And a mixed air temperature sensor 141 provided upstream of the cleaner 18 in the mixed air duct 13 and detecting the temperature of the mixed air.
And a control part 7 which is connected with the fresh air inlet air valve 111, the fresh air temperature sensor 121, the mixed air temperature sensor 141, the return air humidity sensor 36, the return air temperature sensor 37, the air supply fan 17, the return air fan 35 and the adjustable air guiding part 22.
the control unit 7 controls the operation of the air blowing device 10d based on information, commands, and the like transmitted to and received from the respective operation units of the air blowing device 10 d. The operating units here include, for example, the fresh air port damper 111, the air supply fan 17, the air guide adjustable unit 22, and the return air fan 35. For example, the controller 7 controls the opening of the air guide duct 22, obtains the temperature and humidity of the object to be detected, which are detected by the mixed air temperature sensor 141, the return air humidity sensor 36, and the return air temperature sensor 37, and controls the opening of the fresh air port air valve 111 and the rotational speeds of the supply fan 17 and the return air fan 35, respectively, to control the inflow amount of the fresh air and/or the return air in the mixed air duct 13.
The above is a description of the structure of the blower 10 d.
Next, the operation of the blower 10d will be described.
The utility model discloses when air supply arrangement 10d of fourth embodiment worked in the mode of mixing the wind, opened fresh air inlet blast gate 111 and driven fan 17 for the air feed through control portion 7. 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 10d 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 in the bypass passage 2 is guided by the air guide portion 22 and flows into the upstream section of the mixed air passage 13, the return air and the fresh air are mixed in the upstream section of the mixed air passage 13 and the mixed air passage 13, and are sufficiently mixed before entering the purifying portion 18 to form mixed fresh air, and the mixed fresh air is purified by the purifying portion 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 opening 16.
With the above structure, the air return and the fresh air are fully mixed before entering the purifying part 18 by the air-adjustable guiding part 22, and only the fully mixed fresh air entering the purifying part does not have the indoor return air with higher temperature and the outdoor fresh air with lower temperature to pass through the purifying part, so that the risk of dewing and frosting of the mixed air path 13 is reduced, the performance of the purifying part 18 is prevented from being influenced by the dewing and frosting, and the performance reduction of the air supply device 10d is inhibited.
Further, the mixed air temperature sensor 141 detects the temperature of the mixed fresh air in the mixed air duct 13, and obtains 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 temperature of the return air.
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 return air temperature, the mixed 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.
With the above configuration, it is possible to determine whether or not dew condensation has occurred inside blower 10d, 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 d.
(fifth embodiment)
For the sake of brevity, the following description will only describe the air blowing device 10e according to the fifth embodiment, which is different from the above-described embodiments.
as shown in fig. 10, the air blowing device 10e 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 9 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 air 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 e.
Next, the operation of the blower 10e will be described.
As shown in fig. 10, when the discharge port damper 42 is in the first position, the discharge passage 4 is closed, and the air blowing device 10e 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 in the bypass passage 2 is guided by the adjustable air guide part 22 to flow into the upstream section of the mixed air passage 13 and flow to the upstream section of the mixed air passage 13, the return air and the fresh air are fully mixed in the upstream section of the mixed air passage 13 and the mixed air passage 13 to form mixed fresh air, namely, the return air and the fresh air can be fully mixed to form mixed fresh air before entering the purifying part 18, and the mixed fresh air is purified by the purifying part 18, passes through the air supply and heat exchange air passage 14 and the air supply air passage 15 and is sent into the room through the air supply outlet 16. The blower device 10e can determine whether or not dew condensation has occurred inside the blower device 10e in the manner of the first and second embodiments, and automatically adjust the air volume based on this.
As shown in fig. 11, when the discharge port damper 42 is in the second position, the discharge passage 4 is opened, and the blower 10e 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.
air supply arrangement 10e of this embodiment through being provided with air exit 41 and gas vent blast gate 42, through the position of control gas vent blast gate 42, air supply arrangement 10e can be with indoor air discharge to second environment B, also can be with indoor air and outdoor air mixture, and the function is various, and a tractor serves two-purpose has improved the convenience of using.
In the above description, the air blowing device 10a according to the first embodiment is added with the air outlet 41, the air outlet air valve 42 and the air exhaust 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 may also be disposed in the air supply device 10b of the second embodiment, the air supply device 10c of the third embodiment and the air supply device 10d of the fourth 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 have a clear understanding of 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 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, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (15)
1. An air supply device, comprising:
a housing forming an outer shell;
An air return opening communicated with a first environment;
A fresh air port communicated with a second environment;
The return air passage is communicated with the return air inlet;
A mixed air path for mixing the fresh air flowing into the casing from the fresh air inlet and the return air flowing into the casing from the return air inlet to form a mixed fresh air path;
An air supply outlet that communicates the mixture air duct with the first environment;
A bypass passage that communicates the return air passage and the mixture air passage;
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;
A junction port connecting the bypass passage and the mixture air passage;
A wind guide part for guiding the return wind flowing from the intersection port to the mixed wind path to the fresh wind port side;
The fresh air opening is located on an upstream side of the mixture air passage.
2. The air supply device according to claim 1, wherein the air guide portion is an adjustable air guide portion;
the adjustable air guide part is connected with one end of the intersection port in the downstream direction of the mixing air path in a rotating mode, and the end of the intersection port in the downstream direction of the mixing air path serves as an axis to rotate;
when the adjustable air guiding part rotates towards the direction close to the intersection port and closes the intersection port, the adjustable air guiding part is in a closed state, and the bypass passage is not communicated with the air supply and blowing passage;
when the adjustable air guiding part rotates towards the direction far away from the intersection opening and opens the intersection opening, the adjustable air guiding part is in an open state, the bypass passage is communicated with the air supply passage, the adjustable air guiding part guides return air flowing from the intersection opening to the mixed air path to the fresh air opening side, the return air flows in the area close to the central axis of the mixed air path, and the return air flowing in the area close to the central axis of the mixed air path and fresh air flowing into the shell from the fresh air opening are mixed in the mixed air path.
3. The air supply device of claim 2, wherein when the adjustable air guide portion is in an open state, the adjustable air guide portion forms a predetermined angle with a plane where the junction opening is located, so that the junction opening is opened.
4. The air supply device according to claim 1, wherein the air guide portion is a fixed air guide portion;
The fixed wind guide and the plane where the intersection opening is located form a preset angle, and the fixed wind guide guides return air flowing from the intersection opening to the mixed air path to the direction of the central axis of the mixed air path on the upstream side of the mixed air path.
5. the air supply apparatus according to claim 3 or 4, wherein the predetermined angle is an acute angle.
6. the air supply device according to any one of claims 1 to 4, wherein a downstream side passage of the bypass passage is an inclined passage wall that gradually narrows from the return air inlet side to the mixing air passage side.
7. the air supply arrangement as recited in claim 1, further comprising:
A purification unit that is provided downstream of the mixture air path and purifies the fresh mixture air;
and the intersection port is arranged on the air path wall between the fresh air inlet and the purifying part.
8. The air supply arrangement as recited in claim 7, further comprising:
A supply air temperature sensor for acquiring a temperature of supply air flowing from the supply air outlet into a first environment;
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.
9. The blower device according to claim 8, 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.
10. the air supply arrangement as recited in claim 7, comprising:
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.
11. The blower device according to claim 10, 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.
12. The air supply apparatus of any of claims 8 to 11, 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.
13. The air supply apparatus of any of claims 8 to 11, further comprising:
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.
14. The air supply apparatus of any of claims 8 to 11, further comprising:
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.
15. the air supply arrangement as recited in claim 8, further comprising:
An air outlet which is communicated with the second environment;
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 an intersection portion for exchanging heat between the air flowing through the air-mix duct and the air-supply/blow-out passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822121092.5U CN209763430U (en) | 2018-12-17 | 2018-12-17 | Air supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822121092.5U CN209763430U (en) | 2018-12-17 | 2018-12-17 | Air supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209763430U true CN209763430U (en) | 2019-12-10 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822121092.5U Active CN209763430U (en) | 2018-12-17 | 2018-12-17 | Air supply device |
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| Country | Link |
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| CN (1) | CN209763430U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536594A (en) * | 2020-05-13 | 2020-08-14 | 广东美的制冷设备有限公司 | Air conditioner, fresh air duct anti-freezing method thereof and storage medium |
-
2018
- 2018-12-17 CN CN201822121092.5U patent/CN209763430U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536594A (en) * | 2020-05-13 | 2020-08-14 | 广东美的制冷设备有限公司 | Air conditioner, fresh air duct anti-freezing method thereof and storage medium |
| CN111536594B (en) * | 2020-05-13 | 2021-09-24 | 广东美的制冷设备有限公司 | Air conditioner, fresh air duct anti-freezing method thereof and storage medium |
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