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Electric heating device and air conditioner

A technology for electric heating devices and air conditioners, which is applied in the direction of heating methods, air conditioning systems, and the shape of heating elements, etc. It can solve the problems of increased airflow resistance, increased heating noise of air conditioners, and large noise, and achieves a reduction in the total value of heating noise , Improve the heat sink structure and reduce the effect of interference noise

Active Publication Date: 2013-11-13
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the narrow space for installing the electric heating device in the air duct of the air conditioner, the electric heating device acts as a resistance part of the air duct, which causes uneven flow velocity and temperature distribution and generates noise
Specifically, as figure 2 , 3 , 4, the existing electric heating device 10 includes a heat pipe 101, a heat sink part 102 and a reinforcing plate 103, the reinforcing plate 103 is located on the outside of the heat sink part 102, the cross-sectional shape of the heat sink 102 is rectangular, and the indoor unit of the air conditioner The multi-fold evaporator 20 is used, so there must be a large angle between the inflow plane of the heat sink part 102 and the outflow plane of the multi-fold evaporator 20, that is, there is an inflow attack angle between the air flow and the heat sink of the electric heating device. Lead to increased airflow resistance, poor heat transfer effect and large airflow noise
Coupled with the heating noise generated when the PTC electric heating device is turned on, the air conditioner with the electric heating device is noisy and the sound quality is poor under heating conditions
[0003] That is to say, the heating capacity of the heat pump air conditioner is not good when the outdoor temperature is low. In order to improve the heating effect of the air conditioner at low temperature, an electric heating device is added to the air conditioner, but the opening of the electric heating device will increase the temperature of the air conditioner. The heating noise of the air conditioner affects the noise performance of the whole machine, so improving the heat sink structure and installation position of the electric heating device is the key factor to reduce the heating noise of the air conditioner

Method used

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  • Electric heating device and air conditioner
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  • Electric heating device and air conditioner

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Experimental program
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Embodiment 1

[0042] Embodiment is described as follows in conjunction with accompanying drawing:

[0043] Such as Figure 5 As shown, the cross-section of the heat sink of the electric heating device is designed as an arrow-shaped cross-section, wherein the cross-section of the heat sink is a quadrilateral with an included angle of θ with the heating aluminum tube.

[0044] The included angle θ1 between the first inflow edge C1 and the centerline of the heat-generating aluminum tube, θ1 is 60°.

[0045] The included angle θ2 between the second inflow edge D1 and the center line of the heat-generating aluminum tube, θ2 is 60°.

[0046] The included angle θ3 between the first inflow side C1 and the first outflow side C2 is 10°.

[0047] The included angle θ4 between the second inflow side D1 and the second outflow side D2 is 10°.

[0048] Such as Figure 7 As shown, the included angle between the first inflow side C1 of the cooling fin and the first inner side A of the evaporator and the i...

Embodiment 2

[0059] The difference between this embodiment and the first embodiment lies in that the included angle θ1 between the first inflow side C1 and the centerline of the heat-generating aluminum tube, θ1 is 50°.

[0060] The included angle θ2 between the second inflow edge D1 and the centerline of the heat-generating aluminum tube, θ2 is 70°.

[0061] The included angle θ3 between the first inflow side C1 and the first outflow side C2 is 8°.

[0062] The included angle θ4 between the second inflow side D1 and the second outflow side D2 is 5°.

[0063] Such as Figure 7 As shown, the included angle between the first inflow side C1 of the cooling fin and the first inner side A of the evaporator and the included angle between the second inflow side D1 and the second inner side B of the evaporator 20 are 15°, so that the evaporator The airflow out of the device passes through the electric heating device at a smaller attack angle, thereby reducing the resistance of the electric heatin...

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Abstract

The invention provides an electric heating device. A radiating fin component comprises a flow-inlet surface adjacent to a connecting surface; and the flow-inlet surface of the radiating fin component is an inclined surface and is intersected with the central line of a heating pipe to form an inclined angle. The invention also provides an air conditioner. The electric heating device is positioned beside a bending position of an evaporator and is arranged in an air-inlet area of a ventilating device. Therefore, the structure of the radiating fin of the electric heating device is improved, the resistance of the electric heating device to air flow is reduced, the interference noise of the electric heating device to the air conditioner is reduced, meanwhile, rotary noise between a cross-flow blade of the ventilating device and the electric heating device is reduced, the total heating noise of the air conditioner is reduced by about 2dB (A), the noise performance of the air conditioner is improved, and the tone quality of the air conditioner during running is improved.

Description

technical field [0001] The invention relates to the technical field of refrigeration and air conditioning, in particular to an electric heating device and an air conditioner. Background technique [0002] When a heat pump air conditioner operates under heating conditions, it exchanges heat with the outside through the heat exchanger to achieve the purpose of heating the indoor environment. When the outdoor temperature is low, the heat exchange efficiency of the heat exchanger decreases, which affects the air conditioner. The heating capacity of the indoor unit. Usually, in order to improve the heating effect of the air conditioner at low temperature, a PTC electric heating device is added to the air conditioner, because of its high α coefficient, high voltage resistance, and high aging resistance, it is currently widely used in household air conditioners In the indoor unit. Due to the narrow space for installing the electric heating device in the air duct of the air condit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F13/00H05B3/42F24F5/00F24F13/30F24F13/24
Inventor 邹建煌刘攀刘中杰李广湘唐晓晖周英俊
Owner GREE ELECTRIC APPLIANCES INC
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