CN219283477U - Indoor unit and air conditioning unit - Google Patents
Indoor unit and air conditioning unit Download PDFInfo
- Publication number
- CN219283477U CN219283477U CN202223092522.8U CN202223092522U CN219283477U CN 219283477 U CN219283477 U CN 219283477U CN 202223092522 U CN202223092522 U CN 202223092522U CN 219283477 U CN219283477 U CN 219283477U
- Authority
- CN
- China
- Prior art keywords
- fan
- air duct
- indoor unit
- heat exchanger
- air outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
Abstract
The utility model discloses an indoor unit and an air conditioning unit. The indoor unit comprises a shell, a heat exchanger and a fan, wherein the heat exchanger and the fan are arranged in the shell, and an extension air duct is arranged at an air outlet of the fan. According to the indoor unit and the air conditioning unit, the lengthened air duct with gradually increased flow area is arranged at the air outlet of the fan, namely, the fan volute tongue gap and the volute tongue radius are kept unchanged, and the lengthened air duct with a certain length and a certain diffusion angle is newly added to optimize the design of the volute air outlet molded line, so that the distribution of an air outlet flow field on the surface of a heat exchanger and the diffusion interval in the air duct are optimized, the early appearance of a boundary layer is controlled, the minimum vortex range is obtained, meanwhile, the cavity space can be reduced, the purposes of reducing the noise of the air duct and enabling the wind speed distribution of the air duct to be more uniform are achieved, the noise of the indoor unit is effectively reduced, the static pressure resistance of the lengthened air duct can be improved, and the static pressure application range of the fan is expanded.
Description
Technical Field
The utility model relates to the technical field of air treatment equipment, in particular to an indoor unit and an air conditioning unit.
Background
Today, the home air conditioning industry is rapidly developing, and users are also increasingly paying attention to the problem of air conditioning comfort. The vortex noise mainly exists the cavity because of the air current stays the department, leads to the air current backward flow to form the vortex, and air current velocity of flow and cavity size are the main factor that influences vortex noise, and the fan is installed in one side of baffle at present, and the air outlet of fan is located baffle department, causes the baffle opposite side to produce the vortex, causes the big problem of indoor set noise.
Disclosure of Invention
The utility model discloses an indoor unit and an air conditioning unit, which solve the problem of high noise of the indoor unit.
The utility model discloses an indoor unit which comprises a shell, a heat exchanger and a fan, wherein the heat exchanger and the fan are arranged in the shell, an elongated air duct is arranged at an air outlet of the fan, and the flow area of the elongated air duct is gradually increased along the direction close to the heat exchanger.
The indoor unit further comprises a partition board, the partition board is arranged in the shell, the inside of the shell is divided into a fan cavity and a heat exchange cavity by the partition board, the fan is arranged in the fan cavity, and the lengthened air duct is positioned in the heat exchange cavity.
The air outlet of the fan is provided with a necking section, the necking section is positioned in the fan cavity, and one end, far away from the heat exchanger, of the lengthened air duct is connected to the necking section.
The molded line of the lengthened air duct is a curve, and the shape formula of the curve is as follows:
taking the intersection point of the central axis of the air outlet and the partition plate as a coordinate origin, the central axis of the air outlet as an X axis, and the axis parallel to the cross section of the air outlet as a Y axis;
Y＝a*x^2+bx+c；
wherein a, b and c are all calculation constants;
a is more than or equal to 4 and less than or equal to 8;
-0.4≤b≤-0.2；
-0.09≤c≤0.03。
the molded line of the lengthened air duct is a curve, and the lowest point of the curve forms an included angle with the X axis
An angle formed by the highest point of the curve and the X axis +.>
The relation of (2) is:
wherein r is the height of the necking section on the cross section of the air outlet;
and r1 is the height of the end face of the lengthened air duct, which is far away from the necking section, on the cross section of the air outlet.
The minimum distance S between the heat exchanger and the lengthened air duct meets the following formula:
Q2/Q＝4.4/(AS/2r1+0.147)；
wherein Q2 is the end face air quantity of main fluid in the shell; q is the set air quantity of the indoor unit; a is the cross-sectional area of the shell where the heat exchanger is located.
The minimum distance L between the heat exchanger and the necking section satisfies the following formula:
the end face air quantity Q2 of the jet main fluid in the shell meets the following formula set:
A2＝h*d/sinβ；
Q2＝η*V2*A2；
wherein V2 is the wind speed of the windward side of the heat exchanger; a2 is the area of the windward side of the heat exchanger; h is the height of the indoor unit; d is the length of the indoor unit; beta is the inclination angle of the heat exchanger.
The wind speed V2 of the windward side of the heat exchanger meets the following formula:
V1＝Q/π(r1)^2；
V2＝(0.8～0.85)V1；
wherein V1 is the wind outlet speed of the fan.
Another aspect of the present utility model provides an air conditioning unit including the above indoor unit.
According to the indoor unit and the air conditioning unit, the lengthened air duct with gradually increased flow area is arranged at the air outlet of the fan, namely, the fan volute tongue gap and the volute tongue radius are kept unchanged, and the lengthened air duct with a certain length and a certain diffusion angle is newly added to optimize the design of the volute air outlet molded line, so that the distribution of an air outlet flow field on the surface of a heat exchanger and the diffusion interval in the air duct are optimized, the early appearance of a boundary layer is controlled, the minimum vortex range is obtained, meanwhile, the cavity space can be reduced, the purposes of reducing the noise of the air duct and enabling the wind speed distribution of the air duct to be more uniform are achieved, the noise of the indoor unit is effectively reduced, the static pressure resistance of the lengthened air duct can be improved, and the static pressure application range of the fan is expanded.
Drawings
Fig. 1 is a schematic structural diagram of an indoor unit according to an embodiment of the present utility model;
fig. 2 is a schematic size diagram of an indoor unit according to an embodiment of the present utility model;
fig. 3 is another schematic structural view of an indoor unit according to an embodiment of the present utility model;
legend: 1. a housing; 2. a heat exchanger; 3. a blower; 4. lengthening the air duct; 5. a partition plate; 6. a necking section.
Detailed Description
The utility model is further illustrated, but is not limited to, the following examples.
As shown in fig. 1 to 3, the utility model discloses an indoor unit, which comprises a shell 1, a heat exchanger 2 and a fan 3, wherein the heat exchanger 2 and the fan 3 are arranged in the shell 1, an elongated air duct 4 is arranged at an air outlet of the fan 3, and the flow area of the elongated air duct 4 is gradually increased along the direction approaching to the heat exchanger 2. The lengthened air duct 4 with gradually increased flow area is arranged at the air outlet of the fan 3, namely, the clearance between the volute tongue of the fan 3 and the radius of the volute tongue are kept unchanged, the lengthened air duct 4 with a certain length and a diffusion angle is newly added to optimize the design of the molded line of the air outlet of the volute, and further, the distribution of the air outlet flow field on the surface of the heat exchanger 2 and the diffusion interval in the air duct are optimized, and the premature appearance of the control boundary layer is controlled, so that the minimum vortex range is obtained, meanwhile, the space of a cavity can be reduced, the purposes of reducing the noise of the air duct, enabling the wind speed distribution of the air duct to be more uniform are achieved, and the noise of an indoor unit is effectively reduced.
The indoor unit further comprises a partition board 5, the partition board 5 is arranged in the shell 1, the inside of the shell 1 is divided into a fan cavity and a heat exchange cavity by the partition board 5, the fan 3 is arranged in the fan cavity, and the lengthened air duct 4 is positioned in the heat exchange cavity. Under the condition that the structural arrangement of the fan 3 and the partition plate 5 in the prior art is not changed, the lengthened air duct 4 is additionally arranged in the heat exchange cavity to guide the air outlet of the fan 3, so that the problem that vortex noise is generated due to the fact that the air outlet of the fan 3 generates vortex at the joint of the partition plate 5 and the shell 1 in the prior art is overcome.
The air outlet of the fan 3 is provided with a necking section 6, the necking section 6 is positioned in the fan cavity, and one end, far away from the heat exchanger 2, of the lengthened air duct 4 is connected to the necking section 6.
The molded line of the lengthened air duct 4 is a curve, and the shape formula of the curve is as follows:
taking the intersection point of the central axis of the air outlet and the partition plate 5 as a coordinate origin, the central axis of the air outlet as an X axis, and the axis parallel to the cross section of the air outlet as a Y axis;
Y＝a*x^2+bx+c；
wherein a, b and c are all calculation constants;
a is more than or equal to 4 and less than or equal to 8;
-0.4≤b≤-0.2；
-0.09≤c≤0.03。
the profile of the lengthened air duct 4 is a curve, and the curve of the profile of the lengthened air duct 4 affects the structural size and the uniformity of the wind field of the lengthened air duct 4 and also affects the uniformity of the heat exchange distribution of the heat exchanger 2, so that the included angle formed by the lowest point of the curve and the X axis
An angle formed by the highest point of the curve and the X axis +.>
The relation of (2) is:
wherein r is the height of the necking section 6 on the cross section of the air outlet;
r1 is the height of the end surface of the lengthened air duct 4, which is far away from the necking section 6, on the cross section of the air outlet.
The minimum distance S between the heat exchanger 2 and the elongated air duct 4 satisfies the following formula:
Q2/Q＝4.4/(AS/2r1+0.147)；
wherein Q2 is the end face air quantity of main fluid in the shell 1; q is the set air quantity of the indoor unit; a is the cross-sectional area of the housing 1 where the heat exchanger 2 is located.
The minimum distance L between the heat exchanger 2 and the reduced section 6 satisfies the following formula:
the end face air quantity Q2 of the jet main fluid in the shell 1 meets the following formula set:
A2＝h*d/sinβ；
Q2＝η*V2*A2；
wherein V2 is the wind speed of the windward side of the heat exchanger 2; a2 is the area of the windward side of the heat exchanger 2; h is the height of the indoor unit; d is the length of the indoor unit; beta is the inclination angle of the heat exchanger 2.
The wind speed V2 of the windward side of the heat exchanger 2 satisfies the following formula:
V1＝Q/π(r1)^2；
V2＝(0.8～0.85)V1；
wherein V1 is the wind speed of the wind outlet of the fan 3.
Another aspect of the present utility model provides an air conditioning unit including the above indoor unit.
It should be understood that the above-described embodiments of the present utility model are provided by way of example only and are not intended to limit the scope of the utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. Not all embodiments are exhaustive. All obvious changes or modifications which come within the spirit of the utility model are desired to be protected.
Claims (8)
1. The utility model provides an indoor set, includes casing (1), heat exchanger (2) and fan (3), heat exchanger (2) with fan (3) all set up in casing (1), its characterized in that: an extension air duct (4) is arranged at the air outlet of the fan (3), and the flow area of the extension air duct (4) is gradually increased along the direction close to the heat exchanger (2).
2. The indoor unit according to claim 1, further comprising a partition plate (5), wherein the partition plate (5) is disposed in the casing (1), and the partition plate (5) divides the interior of the casing (1) into a fan cavity and a heat exchange cavity, the fan (3) is disposed in the fan cavity, and the elongated air duct (4) is disposed in the heat exchange cavity.
3. The indoor unit according to claim 2, wherein a necking section (6) is provided at the air outlet of the fan (3), the necking section (6) is located in the fan cavity, and one end of the elongated air duct (4) far away from the heat exchanger (2) is connected to the necking section (6).
4. An indoor unit according to claim 3, wherein the profile of the elongate duct (4) is a curve having the following shape formula:
taking the intersection point of the central axis of the air outlet and the partition plate (5) as a coordinate origin, the central axis of the air outlet as an X axis, and the axis parallel to the cross section of the air outlet as a Y axis;
Y＝a*x^2+bx+c；
wherein a, b and c are all calculation constants;
a is more than or equal to 4 and less than or equal to 8;
-0.4≤b≤-0.2；
-0.09≤c≤0.03。
5. the indoor unit according to claim 4, wherein the profile of the elongated air duct (4) is a curve, the lowest point of the curve forming an angle with the X-axis
An angle formed by the highest point of the curve and the X axis +.>
The relation of (2) is:
wherein r is the height of the necking section (6) on the cross section of the air outlet;
and r1 is the height of the end face of the lengthened air duct (4) far away from the necking section (6) on the cross section of the air outlet.
6. An indoor unit according to claim 5, wherein the minimum distance S of the heat exchanger (2) from the elongated air duct (4) satisfies the following equation:
Q2/Q＝4.4/(AS/2r1+0.147)；
wherein Q2 is the end face air quantity of main fluid in the shell (1); q is the set air quantity of the indoor unit; a is the cross-sectional area of the shell (1) where the heat exchanger (2) is located.
7. An indoor unit according to claim 6, characterised in that the minimum distance L of the heat exchanger (2) from the necked-down section (6) satisfies the following equation:
8. an air conditioning unit, characterized in that: comprising an indoor unit according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223092522.8U CN219283477U (en) | 2022-11-21 | 2022-11-21 | Indoor unit and air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223092522.8U CN219283477U (en) | 2022-11-21 | 2022-11-21 | Indoor unit and air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219283477U true CN219283477U (en) | 2023-06-30 |
Family
ID=86913673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223092522.8U Active CN219283477U (en) | 2022-11-21 | 2022-11-21 | Indoor unit and air conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219283477U (en) |
-
2022
- 2022-11-21 CN CN202223092522.8U patent/CN219283477U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112212491A (en) | Machine and air conditioner in spiral case, air conditioning | |
| CN105546780A (en) | Air rectifying device and air conditioner | |
| CN104729039A (en) | Through-flow air duct system and air conditioner with same | |
| CN109340915B (en) | Air conditioner indoor unit and air conditioner | |
| CN219283477U (en) | Indoor unit and air conditioning unit | |
| CN205448209U (en) | Air fairing and air conditioner | |
| CN211550083U (en) | Air supply device | |
| US20170003038A1 (en) | Air-conditioning indoor machine | |
| CN115711428A (en) | Indoor unit and air conditioning unit | |
| WO2023279817A1 (en) | Fan assembly and air conditioner | |
| CN108375125B (en) | Window type air conditioning equipment | |
| CN114352575B (en) | Multi-wing centrifugal fan volute structure and molded line modification method thereof | |
| CN203628954U (en) | Tubular air duct system and air conditioner with same | |
| CN207225019U (en) | On-board air conditioner and its centrifugal blower mounting structure | |
| CN111981566B (en) | Fan and air conditioner indoor unit | |
| CN211925919U (en) | Air outlet device, air conditioner indoor unit and air conditioner | |
| CN110608194B (en) | Centrifugal fan turns to spiral case | |
| CN210292246U (en) | Volute tongue structure, base and air conditioner | |
| CN108397846B (en) | Air conditioning equipment | |
| CN220015590U (en) | Volute and air conditioner | |
| CN215336667U (en) | Fan assembly and air conditioner | |
| CN105465984A (en) | Turbulent flow board and air conditioner | |
| CN108361888B (en) | Air conditioning equipment | |
| CN213542816U (en) | Machine and air conditioner in spiral case, air conditioning | |
| CN214370859U (en) | Air opening assembly, air outlet assembly and air conditioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |