CN1727763A - Bi-directional indoor machine of air conditioner - Google Patents

Bi-directional indoor machine of air conditioner Download PDF

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Publication number
CN1727763A
CN1727763A CNA2004100533464A CN200410053346A CN1727763A CN 1727763 A CN1727763 A CN 1727763A CN A2004100533464 A CNA2004100533464 A CN A2004100533464A CN 200410053346 A CN200410053346 A CN 200410053346A CN 1727763 A CN1727763 A CN 1727763A
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CN
China
Prior art keywords
air conditioner
air
indoor apparatus
right sides
casing
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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
CNA2004100533464A
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Chinese (zh)
Inventor
徐亮
娄骏
张蕾
薛卫华
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Shanghai Hitachi Household Appliance Co Ltd
Original Assignee
Shanghai Hitachi Household Appliance 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 Shanghai Hitachi Household Appliance Co Ltd filed Critical Shanghai Hitachi Household Appliance Co Ltd
Priority to CNA2004100533464A priority Critical patent/CN1727763A/en
Publication of CN1727763A publication Critical patent/CN1727763A/en
Pending legal-status Critical Current

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Abstract

The present invention relates to a bidirectional air conditioner indoor machine. It includes a box body, two side panels, two adjustable exhaust doors and two adjustable suction doors which are respectively placed on two side panels, heat exchanger, fan and controller which are placed in the interior of box body. Said invention also provides the concrete assembly mode and concrete structure of said indoor machine. Said indoor machine can be used for two adjacent rooms, and can simultaneously implement temperature regulation of two adjacent rooms.

Description

Two-way indoor apparatus of air conditioner
Technical field
The present invention relates to a kind of air-conditioner, relate in particular to a kind of be used for adjacent separation room and often only therein a room open air-conditioning with the matching used two-way indoor apparatus of air conditioner of air-conditioner outdoor unit.
Background technology
In present one Room, a room or many house types dwelling house and commercial room, have plenty of, perhaps adopt one drag two, to hold in the palm many or small central air conditioning device etc. for each room is equipped with a cover air-conditioning.But under a lot of situations, housing unit particularly, the user only opens the air-conditioning in a room often, and seldom simultaneously the air-conditioning in all rooms is all opened.Such as turning on the aircondition in the Room daytime, evening turns on the aircondition in the bedroom.At this moment the indoor apparatus of air conditioner in other rooms is become the great wasting of resources by idle.Just because of this waste, thereby make the user separately when a room uses air-conditioning, can't make full use of the heat exchange area of indoor set, and the air-conditioning Energy Efficiency Ratio when making sub-load does not reach better degree.
For general air conditioner user, the time that air-conditioning is all opened in all rooms at full capacity is seldom, and great majority all are the situations that is in sub-load, and therefore the Energy Efficiency Ratio of load is low, and the waste resource.Such as all dispose a cover air-conditioning in each room, or adopt one drag two, to drag many even small central air conditioning etc., in the occasion that loads such as running into family party increases suddenly, though whole unit has enough refrigerating capacities, the exchange capability of heat that is limited by indoor set still is unable to cope with; Be because be limited by the exchange capability of heat of indoor set equally, and make the room area of using separately can't reach the fast-refrigerating more rapidly that the air-conditioning whole capability can provide and heat fast.
In addition, the prior art air-conditioner is such as one drag two machine or central air-conditioning, the form of its use all is that an indoor set is set in a room, this indoor set by casing, the controller that is arranged on an adjustable exhaust door on the casing, adjustable air draught door, is arranged on the blower fan of the heat exchanger in the casing, unidirectional air draught and air draft and controls each parts work constitutes.In use, the air draught door of prior art one drag two or central air-conditioning is fixed and nonadjustable, and because air-conditioner need be regulated direction, so exhaust door and not exclusively closing, so cause alternative waste again.
Summary of the invention
The objective of the invention is to solve one of prior art air-conditioner drags many indoor sets to be installed in adjacent room, its air-conditioner whole capability can't be regulated the defective of using to single room, and provide a kind of two-way indoor apparatus of air conditioner, it is arranged between the adjacent room, can regulate two variations in temperature that the room is indoor, make it when single room air conditioner uses, to have higher Energy Efficiency Ratio; It can reduce user's air-conditioning use cost significantly, and air-conditioner possesses the adjusting width of bigger refrigeration, heating capacity, thereby can realize more rapidly fast-refrigerating and heat fast.
The object of the present invention is achieved like this:
A kind of two-way indoor apparatus of air conditioner comprises: casing, be placed in adjustable exhaust door and adjustable air draught door on the cabinet panel, be arranged on heat exchanger and the blower fan in the casing and control the controller of each parts work; Be characterized in:
The panel of described casing is arranged on the casing both sides, forms by left and right sides panel, front and back boxboard, cover plate and the central dividing plate that is arranged on the casing middle part connect to form up and down; Be provided with air draft doorway and following inlet scoop respectively in panel top and the bottom, the left and right sides;
Described adjustable exhaust door is formed by two, is separately positioned in the last exhaust outlet of left and right sides panel;
Described adjustable air draught door is formed by two, is separately positioned in the following inlet scoop of left and right sides panel;
The tilting rear side of described heat exchanger on central dividing plate top;
Described blower fan is arranged on the central dividing plate bottom.
In above-mentioned two-way indoor apparatus of air conditioner, wherein, described adjustable exhaust door comprises pair of side plates, some fan blades, connecting axle, stepper motor, inferior rotor and connectors; The some fan blades that between pair of side plates, be arranged in parallel, connecting axle passes each sheet fan blade one end and affixed with each sheet fan blade; Stepper motor is arranged on the side plate of a side, is provided with time rotor on the main shaft of stepper motor, and this time rotor is an eccentric cam; Connector one end is connected with connecting axle is vertical, is provided with mounting hole in the connector other end, and inferior rotor is arranged in this mounting hole.
In above-mentioned two-way indoor apparatus of air conditioner, wherein, described adjustable air draught door comprises pair of side plates, some fan blades, connecting axle, stepper motor, inferior rotor and connectors; The some fan blades that between pair of side plates, be arranged in parallel, connecting axle passes each sheet fan blade (32) one end, and affixed with each sheet fan blade (32); Stepper motor (34) is arranged on the side plate (31) of a side, is provided with time rotor on the main shaft of stepper motor, and this time rotor is an eccentric cam; Connector one end is connected with connecting axle is vertical, is provided with mounting hole in the connector other end, and inferior rotor is arranged in this mounting hole.
In above-mentioned two-way indoor apparatus of air conditioner, wherein, be respectively equipped with a through hole on the left and right sides panel of described casing both sides.
In above-mentioned two-way indoor apparatus of air conditioner, wherein also comprise: a voltage balancer, described voltage balancer are hollow pipes, and these hollow pipe two ends are respectively equipped with a removable lining end cap; Described voltage balancer sets up between the through hole that is provided with respectively on the panel of the left and right sides.
In above-mentioned two-way indoor apparatus of air conditioner, wherein, described heat exchanger is made of the coil pipe fin outer with being vertically set on coil pipe.
In above-mentioned two-way indoor apparatus of air conditioner, wherein, be provided with through hole in the described central dividing plate.
In above-mentioned two-way indoor apparatus of air conditioner, wherein, two inlet scoops of described two-way blower fan and the adjustable air draught door on the panel of the left and right sides are oppositely arranged; The through hole that is provided with in the air outlet of two-way blower fan and the central dividing plate is oppositely arranged.
In above-mentioned two-way indoor apparatus of air conditioner, wherein, described controller comprises two terminal boxes and two signal receivers; Two terminal boxes are separately positioned on both sides, central dividing plate top, are connected with two signal receivers that are located at panel middle part, the left and right sides by lead.
The two-way indoor apparatus of air conditioner of the present invention makes it compared with prior art owing to adopted above-mentioned technical scheme, has following advantage and good effect:
1. the present invention is because the shared indoor set in adjacent two rooms, belong to a refrigeration system together, two return air that the room is obtained by the adjustable air draught door of casing both sides respectively, all pass through common heat exchanger and handle the back and send into adjacent room, thereby make two rooms can realize adjustment simultaneously by the adjustable exhaust door by the casing both sides respectively.
2. the present invention can realize the phase interconnected lock owing to be provided with adjustable exhaust door and adjustable air draught door in both sides up and down at casing by control circuit and control program, can be according to two load allotment air quantity and refrigeration (heat) amounts that the room is different.
3. therefore the present invention can open or close the end cap at voltage balancer two ends according to the air pressure situation in adjacent two rooms owing to be provided with voltage balancer in casing, is used for the air pressure in two rooms of balance, makes that human body sensory is comfortable is advisable.
Description of drawings
By the description of a following embodiment to the two-way indoor apparatus of air conditioner of the present invention, can further understand purpose of the present invention, specific structural features and advantage in conjunction with its accompanying drawing.Wherein, accompanying drawing is:
Fig. 1 is the structural representation of the two-way indoor apparatus of air conditioner of the present invention one side.
Fig. 2 is the decomposition texture schematic diagram of the two-way indoor apparatus of air conditioner of the present invention.
Fig. 3 is the front view of the two-way indoor apparatus of air conditioner of the present invention.
Fig. 4 is the left view of the two-way indoor apparatus of air conditioner of the present invention.
Fig. 5 is the internal structure schematic diagram of the two-way indoor apparatus of air conditioner of the present invention.
Fig. 6 is the structural representation of adjustable exhaust door in the two-way indoor apparatus of air conditioner of the present invention.
Fig. 7 is the local structure for amplifying schematic diagram of the A part of adjustable exhaust door among Fig. 6.
Fig. 8 is the structural representation of adjustable air draught door in the two-way indoor apparatus of air conditioner of the present invention.
Fig. 9 is the local structure for amplifying schematic diagram of the A part of adjustable air draught door among Fig. 8.
Figure 10 is the structural representation of the voltage balancer of the two-way indoor apparatus of air conditioner of the present invention.
Figure 11 is the end cover structure schematic diagram of the voltage balancer of the two-way indoor apparatus of air conditioner of the present invention.
Figure 12 is the installation site schematic diagram of the two-way indoor apparatus of air conditioner of the present invention.
The specific embodiment
See also Fig. 1 to shown in Figure 5, the two-way indoor apparatus of air conditioner of the present invention, comprise casing 1, be placed in adjustable exhaust door 2 and adjustable air draught door 3 on casing 1 panel, be arranged on heat exchanger 4 and the blower fan 5 in the casing 1 and control each parts work controller 6, press equal device 7.Casing 1 is connected and composed by left panel 11, right panel 12, preceding boxboard 13, rearing-box plate 14, upper cover plate 15, lower cover 16; Be provided with central dividing plate 17 at casing 1 middle part, be provided with through hole 18 in this central dividing plate 17; Be provided with exhaust outlet 111,121 and following inlet scoop 112,122 respectively in left and right sides panel 11, right panel 12 upper and lower parts.
See also Fig. 6, shown in Figure 7, described adjustable exhaust door 2 is formed by two, is separately positioned in the last exhaust outlet 111 and 121 of left and right sides panel 11 and 12.Adjustable exhaust door 2 comprises pair of side plates 21, some fan blades 22, connecting axle 23, stepper motor 24, inferior rotor 25 and connectors 26; Each sheet fan blade 22 is set in parallel between the pair of side plates 21, and connecting axle 23 passes each sheet fan blade 22 1 end, and affixed with each sheet fan blade 22; Stepper motor 24 is arranged on the side plate 21 of a side, is provided with time rotor 25 on the main shaft of stepper motor 24, and this time rotor 25 is eccentric cams; Connector 26 1 ends and 23 vertical connections of connecting axle are provided with mounting hole in connector 26 1 ends, and inferior rotor 25 is arranged in this mounting hole.Adjustable exhaust door 2 is arranged in the last exhaust outlet 111,121 that is separately positioned on left and right sides panel 11, right panel 12, adopts bolt that the biside plate 21 of adjustable exhaust door 2 is connected with panel 11,12.
After the air-conditioner start, the main shaft of stepper motor rotates drive time rotor and makes eccentric circular motion, because time rotor is arranged in the mounting hole of connector, drives connector and pumps, thereby drive connecting axle and fan blade rotation again.Adjustable exhaust door, the air quantity that its angle is distributed is as required regulated automatically, but the user be need regulate wind direction the time, the position of two symmetries about exhaust door can rest on automatically automatically.
See also Fig. 8, shown in Figure 9, described adjustable air draught door 3 is formed by two.Adjustable air draught door 3 comprises pair of side plates 31, some fan blades 32, connecting axle 33, stepper motor 34, inferior rotor 35 and connectors 36; Some fan blades 32 are set in parallel between the pair of side plates 31, and connecting axle 33 passes each sheet fan blade 32 1 end, and affixed with each sheet fan blade 32; Stepper motor 34 is arranged on the side plate 31 of a side, is provided with time rotor 25 on the main shaft of stepper motor 24, and this time rotor 25 is eccentric cams; Connector 26 1 ends and 23 vertical connections of connecting axle are provided with mounting hole in connector 26 other ends, and inferior rotor 25 is arranged in this mounting hole.Adjustable air draught door 3 is arranged in the following inlet scoop 112,122 that is separately positioned on left and right sides panel 11, right panel 12, adopts bolt that the biside plate 31 of adjustable air draught door 3 is connected with panel 11,12.
After the air-conditioner start, the main shaft of stepper motor rotates drive time rotor and makes eccentric circular motion, because time rotor is arranged in the mounting hole of connector, drives connector and pumps, thereby drive connecting axle and fan blade rotation again.Adjustable exhaust door, the air quantity that its angle is distributed is as required regulated automatically, but the user be need regulate wind direction the time, the position of two symmetries about exhaust door can rest on automatically automatically.
Please cooperate referring to shown in Figure 5 described heat exchanger 4 tilting rear sides again on central dividing plate 17 tops; Heat exchanger 4 is made of the coil pipe fin outer with being vertically set on coil pipe, and irritating in coil pipe has cold-producing medium, and this coil pipe is connected with the off-premises station of air-conditioner by connecting leg.This heat exchanger 4 adopts the commercially available prod.Two shared indoor heat exchangers in room, but total refrigeration and heating capacity centralizedly supply any one room wherein can be realized fast-refrigerating more rapidly and heat fast.
Described blower fan 5 is arranged on through hole 18 bottoms of central dividing plate 17.The adjustable air draught door 3 that is provided with on the inlet scoop, both sides 51 of two-way blower fan 5 and the left and right sides panel 11,12 is corresponding; It is corresponding to be provided with through hole 18 in the air outlet 52 of two-way blower fan 5 and the central dividing plate 17, and it is also corresponding with heat exchanger 4 to see through through hole 18.Blower fan 5 is a two-way blower fan, can be to the two sides air draught, and wind speed is multipole or adjustable continuously.
Controller 6 comprises two terminal boxes 61 and two signal receivers 62; Two terminal boxes 61 are separately positioned on both sides, central dividing plate 17 top, be connected with two signal receivers 62 that are located at left and right sides panel 11,12 middle parts by lead, this terminal box 61 is connected with stepper motor 23, stepper motor 33 on two adjustable air draught doors 3 and the power control terminal of blower fan 5 on two adjustable exhaust doors 2 respectively by lead.
Be respectively equipped with a through hole 113,123 on the left and right sides panel 11,12 of casing 1 both sides, between these two through holes 113,123, set up one and all press equal device 7; Please cooperate referring to Figure 10 and shown in Figure 11, voltage balancer 7 is hollow pipes, is respectively equipped with a removable lining end cap 71 at voltage balancer 7 two ends of this hollow pipe.The room voltage balancer can be opened the end cap 71 that is located at these pipe two ends as required, the air pressure in two rooms of balance.
The supporting use of off-premises station of two-way indoor apparatus of air conditioner of the present invention and prior art, the structure of this off-premises station is identical with the structure of the off-premises station of existing holder two air conditioner, an one dragging more air conditioner or a small central air conditioning, generally is to adopt frequency-changeable compressor.Please cooperate referring to shown in Figure 12, the two-way indoor apparatus of air conditioner of the present invention is arranged between two room A and the B, and two shared two-way indoor sets of room A, B belong to a refrigeration system together.
Two-way indoor apparatus of air conditioner operation principle of the present invention is as follows: when two rooms use air-conditioner simultaneously, two return air that the room is obtained by the adjustable air draught door that is located at the indoor set both sides, all pass through and send into two adjacent rooms respectively after shared heat exchanger processing back is regulated by the adjustable exhaust door that is located at the indoor set both sides, thereby make two rooms can realize adjustment simultaneously.By control assembly and control program that adjustable air draught door in the both sides on the indoor set in adjacent two rooms and adjustable exhaust door is chain, automatically air draught and air draft, make the suction air volume and the exhaust air rate in two rooms be consistent, and the aperture that can regulate fan blade according to different burden requirements, to distribute refrigeration (heat) amount to two rooms.Two-way blower fan can be multistage or adjustable continuously according to burden requirement.Voltage balancer is a closable pipeline that is erected at both sides in the case, can open the end cap at voltage balancer two ends, the pressure reduction that is caused when using air-conditioning so that two rooms of balance are long-time simultaneously.When room uses air-conditioning, and another room time spent does not use the adjustable air draught door and the adjustable exhaust door of indoor set one side of air-conditioned room to close correspondence; The adjustable air draught door and the adjustable exhaust door of indoor set one side in the room of use air-conditioning are opened, room of whole refrigeration (heat) ability centralizedly supply that two room air conditioners are needed uses, the adjusting width is promoted significantly, though have only this moment a room using air-conditioning, but the whole heat exchange efficiency of indoor set is still used completely, thereby can realize more rapidly fast-refrigerating and heat fast, can also can satisfy instructions for use under the situation that single room air conditioner load heightens in family party.
In sum, the two-way indoor apparatus of air conditioner of the present invention is arranged on the housing unit of adjacent room or the similar dining room place between cutting apart, with the supporting use of off-premises station, can make two rooms realize adjustment simultaneously, also can be according to two load allotment air quantity and refrigeration (heat) amounts that the room is different, have higher Energy Efficiency Ratio, the power and energy saving effect is obvious.

Claims (9)

1. two-way indoor apparatus of air conditioner comprises: casing (1), be placed in adjustable exhaust door (2) and adjustable air draught door (3) on casing (1) panel, be arranged on heat exchanger (4) and the blower fan (5) in the casing (1) and control the controller (6) of each parts work; It is characterized in that:
The panel of described casing (1) is arranged on casing (1) both sides, forms by left and right sides panel (11,12), front and back boxboard (13,14), cover plate (15,16) and the central dividing plate (17) that is arranged on casing (1) middle part connect to form up and down; Be provided with air draft doorway (111,121) and following inlet scoop (112,122) respectively in left and right sides panel (11,12) top and the bottom;
Described adjustable exhaust door (2) is formed by two, is separately positioned in the last exhaust outlet (111,121) of left and right sides panel (11,12);
Described adjustable air draught door (3) is formed by two, is separately positioned in the following inlet scoop (112,122) of left and right sides panel (11,12);
The tilting rear side of described heat exchanger (4) on central dividing plate (17) top;
Described blower fan (5) is arranged on central dividing plate (17) bottom.
2. two-way indoor apparatus of air conditioner as claimed in claim 1 is characterized in that: described adjustable exhaust door (2) comprises pair of side plates (21), some fan blades (22), connecting axle (23), stepper motor (24), inferior rotor (25) and connector (26); The some fan blades (22) that between pair of side plates (21), be arranged in parallel, connecting axle (23) passes each sheet fan blade (22) one end and affixed with each sheet fan blade (22); Stepper motor (24) is arranged on the side plate (21) of a side, is provided with time rotor (25) on the main shaft of stepper motor (24), and this time rotor (25) is an eccentric cam; Connector (26) one ends and vertical connection of connecting axle (23) are provided with mounting hole in connector (26) other end, and inferior rotor (25) is arranged in this mounting hole.
3. two-way indoor apparatus of air conditioner as claimed in claim 1 is characterized in that: described adjustable air draught door (3) comprises pair of side plates (31), some fan blades (32), connecting axle (33), stepper motor (34), inferior rotor (35) and connector (36); The some fan blades (32) that between pair of side plates (31), be arranged in parallel, connecting axle (33) passes each sheet fan blade (32) one end, and affixed with each sheet fan blade (32); Stepper motor (34) is arranged on the side plate (31) of a side, is provided with time rotor (25) on the main shaft of stepper motor (24), and this time rotor (25) is an eccentric cam; Connector (26) one ends and vertical connection of connecting axle (23) are provided with mounting hole in connector (26) other end, and inferior rotor (25) is arranged in this mounting hole.
4. two-way indoor apparatus of air conditioner as claimed in claim 1 is characterized in that: be respectively equipped with a through hole (113,123) on the left and right sides panel (11,12) of described casing (1) both sides.
5. two-way indoor apparatus of air conditioner as claimed in claim 1 is characterized in that also comprising: a voltage balancer (7), described voltage balancer (7) are hollow pipes, and these hollow pipe two ends are respectively equipped with a removable lining end cap (71); Described voltage balancer (7) sets up between the through hole (113,123) that is provided with respectively on the left and right sides panel (11,12).
6. two-way indoor apparatus of air conditioner as claimed in claim 1 is characterized in that: described heat exchanger (4) is made of the coil pipe fin outer with being vertically set on coil pipe.
7. two-way indoor apparatus of air conditioner as claimed in claim 1 is characterized in that: be provided with through hole (18) in the described central dividing plate (17).
8. two-way indoor apparatus of air conditioner as claimed in claim 1 is characterized in that: the adjustable air draught door (3) on two inlet scoops (51) of described two-way blower fan (5) and the left and right sides panel (11,12) is oppositely arranged; The air outlet (32) of two-way blower fan (5) is oppositely arranged with the middle through hole (18) that is provided with of central dividing plate (17).
9. two-way indoor apparatus of air conditioner as claimed in claim 1 is characterized in that: described controller (6) comprises two terminal boxes (61) and two signal receivers (62); Two terminal boxes (61) are separately positioned on central dividing plate (17) both sides, top, are connected with two signal receivers (62) that are located at left and right sides panel (11,12) middle part by lead.
CNA2004100533464A 2004-07-30 2004-07-30 Bi-directional indoor machine of air conditioner Pending CN1727763A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2004100533464A CN1727763A (en) 2004-07-30 2004-07-30 Bi-directional indoor machine of air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2004100533464A CN1727763A (en) 2004-07-30 2004-07-30 Bi-directional indoor machine of air conditioner

Publications (1)

Publication Number Publication Date
CN1727763A true CN1727763A (en) 2006-02-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2004100533464A Pending CN1727763A (en) 2004-07-30 2004-07-30 Bi-directional indoor machine of air conditioner

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102869231A (en) * 2011-07-06 2013-01-09 苏州昆拓热控系统股份有限公司 Heat exchanger
CN105299751A (en) * 2014-07-08 2016-02-03 三菱电机株式会社 Air conditioning device
CN107401822A (en) * 2017-07-14 2017-11-28 深圳沃海森科技有限公司 Heat exchanger for ultra-thin air-cooled ducted air conditioner
CN115614835A (en) * 2022-10-17 2023-01-17 青岛海尔空调器有限总公司 Air conditioner indoor unit and air conditioner
CN115682144A (en) * 2022-10-17 2023-02-03 青岛海尔空调器有限总公司 Air conditioner indoor unit and air conditioner

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102869231A (en) * 2011-07-06 2013-01-09 苏州昆拓热控系统股份有限公司 Heat exchanger
CN105299751A (en) * 2014-07-08 2016-02-03 三菱电机株式会社 Air conditioning device
CN105299751B (en) * 2014-07-08 2018-08-28 三菱电机株式会社 Air-conditioning device
CN107401822A (en) * 2017-07-14 2017-11-28 深圳沃海森科技有限公司 Heat exchanger for ultra-thin air-cooled ducted air conditioner
CN115614835A (en) * 2022-10-17 2023-01-17 青岛海尔空调器有限总公司 Air conditioner indoor unit and air conditioner
CN115682144A (en) * 2022-10-17 2023-02-03 青岛海尔空调器有限总公司 Air conditioner indoor unit and air conditioner

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