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Seat air conditioning unit

a seat air conditioner and air conditioning technology, applied in the field of seat air conditioners, can solve the problems of difficult to provide a sufficient cooling effect, difficulty in controlling the temperature of the air to be blown from the seat surface, and difficulty in reducing the air flow rate, so as to reduce the power consumption in the draft mode, improve the draft effect, and reduce the effect of pressure loss

Inactive Publication Date: 2006-11-16
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a seat air conditioning unit that has a draft effect and a cooling or heating effect in a normal operation. The unit includes a duct, a heat exchanger unit, and an air volume control device. The duct has a passage space with two outlet ports, one for introducing air into the space and another for discharging air. The heat exchanger unit has a thermoelectric effect element and two heat exchangers for performing heat exchange with the air. The air volume control device is in the duct for changing the ratio of air introduced to the outlet ports. The ratio of air blown from the seat surface is larger in the draft mode than in the normal mode, improving the draft effect on the seat surface while reducing power consumption. The duct also has a bypass passage for controlling the volume of air flowing in the bypass passage. The ratio of air introduced to the outlet ports is changed between the draft mode and the normal mode, improving the draft effect on the seat surface and reducing pressure loss.

Problems solved by technology

Therefore, it is difficult to blow a sufficient volume of air from the seat surface in the transitional state.
However, the temperature of the air to be blown from the seat surface is not controlled.
Therefore, it is difficult to provide a sufficient cooling effect, particularly, in a normal operation.

Method used

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  • Seat air conditioning unit
  • Seat air conditioning unit
  • Seat air conditioning unit

Examples

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Embodiment Construction

[0033] A first example embodiment of the present invention will now be described with reference to FIGS. 1 to 4. As shown in FIG. 1, a seat air conditioning unit 1 of the first example embodiment is for example mounted to a seat bottom 21 of a seat 20. Alternatively, the seat air conditioning unit 1 can be mounted to a seat back 22.

[0034] The seat air conditioning unit 1 has a duct 2, a blower 4 and a heat exchanger unit 9. The duct 2 forms an inlet port 3 at one end (left end in FIG. 1) and the blower unit 4 is located upstream of the inlet port 3. The heat exchanger unit 9 is located downstream of the blower unit 4 in the duct 2. The blower unit 4 sucks air and blows the air into the duct 2. The seat air conditioning unit 1 is for example used in a vehicle. In this case, the blower unit 4 sucks air inside a passenger compartment. The blower unit 4 is disposed such that the air is fully introduced into a passage space of the duct 2 through the inlet port 3. In FIG. 1, an axial flo...

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Abstract

In an air conditioning unit for a seat, a duct forms a first outlet port through which air is blown to a seat surface and a second outlet port for discharging air. A heat exchanger unit having a thermoelectric effect element is disposed in the duct. An air volume control device is disposed in a duct to control a ratio of air introduced to the first outlet port to air introduced in an inlet port of the duct. In a draft mode, the air volume control device is operated such that the volume of air introduced to the first outlet port is larger than that in a normal mode. In a predetermined condition, the air volume control device is operated in the draft mode and an electric current supply to the thermoelectric effect element is controlled such that a heat exchange rate in the heat exchanger unit is smaller than that in the normal mode.

Description

CROSS REFERENCE TO RELATED APPLICATION [0001] This application is based on Japanese Patent Applications No. 2005-138609 filed on May 11, 2005, No. 2006-46506 filed on Feb. 23, 2006, and No. 2006-46507 filed on Feb. 23, 2006, the disclosures of which are incorporated herein by reference. FIELD OF THE INVENTION [0002] The present invention relates to a seat air conditioning unit that blows air from a seat surface. BACKGROUND OF THE INVENTION [0003] According to a seat air conditioning unit disclosed in Japanese Unexamined Patent Publication No. 10-44756, a temperature of air to be blown from a surface of a seat is increased or reduced through a heat exchanger unit having a Peltier element so as to improve a feeling of a passenger seating on the seat. A flow of air is produced by a blower unit and is introduced to the heat exchanger unit. In the heat exchanger unit, a first heat exchanger is disposed on a heat absorbing side of the Peltier element and a second heat exchanger is dispose...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F25B21/02F25D23/12
CPCB60N2/5635F25B21/04B60N2/5692B60N2/5685
Inventor ITO, YUJIYAMAMOTO, TAKASHIYOSHIDA, TAKAHIROMIZUTANI, SATOSHITSUJI, YOSHINORI
Owner DENSO CORP
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