CN107388559B - Heat exchanger with centrifugal fan for central air conditioner - Google Patents
Heat exchanger with centrifugal fan for central air conditioner Download PDFInfo
- Publication number
- CN107388559B CN107388559B CN201710791476.5A CN201710791476A CN107388559B CN 107388559 B CN107388559 B CN 107388559B CN 201710791476 A CN201710791476 A CN 201710791476A CN 107388559 B CN107388559 B CN 107388559B
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- heat exchange
- centrifugal fan
- plate
- centrifugal
- heat exchanger
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
Abstract
The invention discloses a heat exchanger for a central air conditioner with centrifugal fans, which comprises a heat exchange box body, an air exhaust device and a centrifugal air exhaust device, wherein the bottom centrifugal air exhaust device comprises a first centrifugal fan and a second centrifugal fan, and slopes are respectively obliquely arranged on the outer side walls between air outlets of the first centrifugal fan and the second centrifugal fan and air inlets of the first centrifugal fan and the second centrifugal fan. According to the structural design, the cross section of the heat exchange box body is set to be in an isosceles trapezoid shape, the distance between the lower ends of the left heat exchange plate and the right heat exchange plate can be expanded, vortex formation is reduced, the convection speed between the lower ends of the left heat exchange plate and the right heat exchange plate can be further improved through the arrangement of the first centrifugal fan and the second centrifugal fan, and the bottom vortex is timely discharged in a matched mode with an exhaust device on the top plate, so that a good drainage effect is achieved. Thereby effectively improving the heat exchange uniformity and the heat exchange efficiency of the heat exchanger.
Description
Technical Field
The invention relates to the technical field of central air conditioners, in particular to a heat exchanger for a central air conditioner with a centrifugal fan.
Background
Air conditioning refrigeration technology has an indispensable role in daily life and commercial application of people. Along with the consumption and shortage of energy, energy conservation and emission reduction become important aspects in the economic development process of China. The air conditioning refrigeration technology is mainly used for refrigerating rooms in summer in daily life, and some food processing enterprises also need refrigeration houses for food preservation. The energy consumed by the air conditioner in China is large, and the energy shortage can be effectively relieved by improving the refrigerating efficiency of the air conditioner, so that the purposes of energy conservation and emission reduction are achieved. The V-shaped heat exchanger of the central air conditioner is an important part for heat exchange between the air conditioner and the outdoor environment, and the heat exchange efficiency of the V-shaped heat exchanger directly influences the overall operation efficiency of the air conditioner. At present, an exhaust fan is generally erected at the top of the V-shaped heat exchanger, hot air in a box body of the V-shaped heat exchanger is pumped out, and then the air inside and outside the V-shaped heat exchanger smoothly flows, so that the heat exchange efficiency of the heat exchanger is effectively improved, but the V-shaped heat exchanger arranged in the mode has smaller bottom space, so that the bottom convection air speed is smaller, vortex is easy to think, heat is not easy to discharge, and the heat exchange efficiency of the heat exchanger is further influenced.
Disclosure of Invention
The invention aims to provide a heat exchanger with good heat exchange uniformity and high heat exchange efficiency.
To achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a heat exchanger for central air conditioning with centrifugal fan, include transversal personally submit the heat exchange box that isosceles trapezoid set up, set up in exhaust device of heat exchange box roof and set up in the inside of heat exchange box and along the bottom centrifugal exhaust device that the length direction of heat exchange box set up, bottom centrifugal exhaust device is including the symmetrical first centrifugal fan and the second centrifugal fan that pastes the setting mutually on the heat exchange box bottom plate, the air outlet of first centrifugal fan and second centrifugal fan all sets up, the air intake of first centrifugal fan and second centrifugal fan respectively with the left heat exchange plate and the right heat exchange plate of heat exchange box corresponding, just all be provided with the slope on the lateral wall between the air outlet and the air intake of first centrifugal fan, and on the lateral wall between the air outlet and the air intake of second centrifugal fan.
The left heat exchange plate, the right heat exchange plate, the front wind guard and the rear wind guard are respectively arranged at the front end and the rear end of the right heat exchange plate, and the tops of the left heat exchange plate, the right heat exchange plate, the front wind guard and the rear wind guard are respectively fastened with the edges around the top plate.
The bottoms of the left heat exchange plate, the right heat exchange plate, the front wind shield and the rear wind shield are respectively fastened with edges arranged on the periphery of the bottom plate.
The exhaust device is an axial flow fan arranged at the exhaust outlet of the top plate.
The rotating speeds of the first centrifugal fan and the second centrifugal fan are slightly smaller than that of the axial flow fan.
The invention has the beneficial effects that: the heat exchange box comprises a heat exchange box body, an exhaust device and a bottom centrifugal exhaust device, wherein the cross section of the heat exchange box body is in an isosceles trapezoid shape, the exhaust device is arranged on a top plate of the heat exchange box body, the bottom centrifugal exhaust device is arranged in the heat exchange box body and is arranged along the length direction of the heat exchange box body, the bottom centrifugal exhaust device comprises a first centrifugal fan and a second centrifugal fan which are symmetrically and oppositely arranged on a bottom plate of the heat exchange box body, air outlets of the first centrifugal fan and the second centrifugal fan are respectively arranged upwards, air inlets of the first centrifugal fan and the second centrifugal fan respectively correspond to a left heat exchange plate and a right heat exchange plate of the heat exchange box body, and slopes are respectively arranged on the outer side wall between the air outlets of the first centrifugal fan and the air inlets and the outer side wall between the air outlets of the second centrifugal fan and the air inlets. According to the structural design, the cross section of the heat exchange box body is set to be in an isosceles trapezoid shape, the distance between the lower ends of the left heat exchange plate and the right heat exchange plate can be expanded, vortex formation is reduced, the convection speed between the lower ends of the left heat exchange plate and the right heat exchange plate can be further improved through the arrangement of the first centrifugal fan and the second centrifugal fan, and the bottom vortex is timely discharged in a matched mode with an exhaust device on the top plate, so that a good drainage effect is achieved. Thereby effectively improving the heat exchange uniformity and the heat exchange efficiency of the heat exchanger.
Drawings
Fig. 1 is an isometric view of a heat exchanger for a central air conditioner with a centrifugal fan in accordance with the present invention.
Fig. 2 is a schematic diagram of a cross section of a heat exchanger for a central air conditioner with a centrifugal fan according to the present invention.
Detailed Description
The following is a description of the technical solution of the present invention with reference to fig. 1 to 2.
The utility model provides a heat exchanger for central air conditioning with centrifugal fan, includes heat exchange box 1 that transversal isosceles trapezoid shape set up, set up in heat exchange box 1 roof's exhaust device 12 and set up in heat exchange box 1 is interior along heat exchange box 1 length direction's bottom centrifugal exhaust device 16, bottom centrifugal exhaust device 16 includes symmetrical first centrifugal fan 161 and the second centrifugal fan 162 of pasting setting on heat exchange box 1 inside bottom plate mutually, the air outlet of first centrifugal fan 161 and second centrifugal fan 162 all set up, the air intake 1611 of first centrifugal fan 161 and second centrifugal fan 162 respectively with heat exchange box 1's left heat exchanger plate 13 and right heat exchanger plate 14 correspond, just the air outlet 1612 of first centrifugal fan 161 and second centrifugal fan 162 with slope 1613 is provided with on the lateral wall between the air intake 1611 of first centrifugal fan 161 and second centrifugal fan 162 respectively in the slope. As shown in FIG. 2, the slopes are all inclined upwards, so that a good upwards drainage effect can be achieved on the air flow in the narrower area at the bottom.
Further preferably, front and rear ends of the left heat exchange plate 13 and the right heat exchange plate 14 are respectively provided with a front wind shield 15 and a rear wind shield, tops of the left heat exchange plate 13, the right heat exchange plate 14, the front wind shield 15 and the rear wind shield are respectively fastened with edges around the top plate, and bottoms of the left heat exchange plate 13, the right heat exchange plate 14, the front wind shield and the rear wind shield are respectively fastened with edges around the bottom plate of the heat exchange box body 1.
Further preferably, the exhaust device 12 is an axial fan 122 disposed at an exhaust port of a top plate of the heat exchange box 1, and the rotational speeds of the first centrifugal fan 161 and the second centrifugal fan 162 are slightly less than the rotational speed of the axial fan 122. The structure design can effectively avoid the defects that the convection speed is low and vortex is easy to form because the lower ends of the left heat exchange plate 13 and the right heat exchange plate 14 are far away from the axial flow fan 122, thereby being complementary with the axial flow fan 122 effectively and accelerating the discharge of bottom hot air.
Above-mentioned structural design, through the setting of first centrifugal fan 161 and second centrifugal fan 162, can be further improve the convection velocity of hot air between left heat exchanger plate 13 and the right heat exchanger plate 14 lower extreme to cooperate timely with the exhaust device 12 on the roof with the bottom vortex discharge, play fine drainage effect. Thereby effectively improving the heat exchange uniformity and the heat exchange efficiency of the heat exchanger.
The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (5)
1. A heat exchanger for central air conditioner with centrifugal fan, its characterized in that: the heat exchange box comprises a heat exchange box body with an isosceles trapezoid cross section, an exhaust device arranged on a top plate of the heat exchange box body, and a bottom centrifugal exhaust device arranged in the heat exchange box body and arranged along the length direction of the heat exchange box body, wherein the bottom centrifugal exhaust device comprises a first centrifugal fan and a second centrifugal fan which are symmetrically and oppositely arranged on a bottom plate of the heat exchange box body, air outlets of the first centrifugal fan and the second centrifugal fan are respectively arranged upwards, air inlets of the first centrifugal fan and the second centrifugal fan respectively correspond to a left heat exchange plate and a right heat exchange plate of the heat exchange box body, and slopes are respectively arranged on the outer side walls between the air outlets of the first centrifugal fan and the air inlets and the outer side walls between the air outlets of the second centrifugal fan and the air inlets;
the slopes are all inclined upwards; the air flow in the narrower area of the bottom can be upwards guided.
2. The heat exchanger for a central air conditioner with centrifugal fan according to claim 1, wherein: front wind shields and rear wind shields are respectively arranged at the front end and the rear end of the left heat exchange plate and the right heat exchange plate, and the tops of the left heat exchange plate, the right heat exchange plate, the front wind shields and the rear wind shields are respectively fastened with the edges around the top plate.
3. A heat exchanger for a central air conditioner with a centrifugal fan as claimed in claim 2, wherein: the bottoms of the left heat exchange plate, the right heat exchange plate, the front wind shield and the rear wind shield are respectively fastened with the edges arranged on the periphery of the bottom plate.
4. A heat exchanger for a central air conditioner with a centrifugal fan as defined in claim 1, wherein: the exhaust device is an axial flow fan arranged at the exhaust outlet of the top plate.
5. A heat exchanger for a central air conditioner with a centrifugal fan as defined in claim 4, wherein: the rotating speeds of the first centrifugal fan and the second centrifugal fan are slightly smaller than the rotating speed of the axial flow fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791476.5A CN107388559B (en) | 2017-09-05 | 2017-09-05 | Heat exchanger with centrifugal fan for central air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791476.5A CN107388559B (en) | 2017-09-05 | 2017-09-05 | Heat exchanger with centrifugal fan for central air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107388559A CN107388559A (en) | 2017-11-24 |
| CN107388559B true CN107388559B (en) | 2023-08-01 |
Family
ID=60349318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710791476.5A Active CN107388559B (en) | 2017-09-05 | 2017-09-05 | Heat exchanger with centrifugal fan for central air conditioner |
Country Status (1)
| Country | Link |
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| CN (1) | CN107388559B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004218905A (en) * | 2003-01-14 | 2004-08-05 | Sanyo Electric Co Ltd | Separate air conditioner |
| CN2906433Y (en) * | 2006-04-06 | 2007-05-30 | 山东宏力空调设备有限公司 | Low-noise air draft device for air-cooled central air conditioner set |
| CN102192562A (en) * | 2010-03-10 | 2011-09-21 | 叶可 | Window-type air conditioner giving consideration to cold and hot |
| CN204757291U (en) * | 2015-07-06 | 2015-11-11 | 广东美的暖通设备有限公司 | Fan system and air conditioner |
| CN105371689A (en) * | 2015-12-01 | 2016-03-02 | 四川天地汇能环保科技有限公司 | Heat exchange device with flow guide lug |
| CN206459529U (en) * | 2017-02-15 | 2017-09-01 | 特灵空调系统(中国)有限公司 | A kind of finned heat exchanger |
| CN207262696U (en) * | 2017-09-05 | 2018-04-20 | 深圳市大众新源节能科技有限公司 | A kind of central air-conditioning heat exchanger with centrifugal fan |
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2017
- 2017-09-05 CN CN201710791476.5A patent/CN107388559B/en active Active
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| Publication number | Publication date |
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| CN107388559A (en) | 2017-11-24 |
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Effective date of registration: 20230626 Address after: 518100 Floor 6, Building 6, Huilixing Industrial Park, Liaokeng, Baoyuan Community, Shiyan Street, Bao'an District, Shenzhen City, Guangdong Province Applicant after: Shenzhen caiyuanda Technology Co.,Ltd. Address before: 518000 West of 6th Floor, Canteen and Cultural Center, Songpingshan High tech Dormitory, Nanshan District, Shenzhen, Guangdong Province Applicant before: SHENZHEN DAZHONGXINYUAN ENERGY SAVING TECHNOLOGY Co.,Ltd. |
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