Heat medium heating apparatus and vehicular air-conditioning system including the same

a heating apparatus and heating element technology, applied in air heaters, indirect heat exchangers, light and heating apparatus, etc., can solve the problems of reducing the workability of incorporating ptc heating elements, difficult respectively inserting, and reducing the workability of heating elements, so as to reduce the size, enhance the performance, and reduce the weight

Inactive Publication Date: 2012-09-20
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0023]According to the present invention, the heat medium heated by the heat medium heating apparatus having any of the above-mentioned features can circulate through the heat radiator placed in the air flow passage. Therefore, the heat medium to be supplied to the heat radiator provided in the air flow passage can be heated by the heat med...

Problems solved by technology

Therefore, it is not easy to respectively insert and set the PTC heating elements between the separating walls serving as heat transfer surfaces so as to bring the PTC heating elements into close contact therewith.
Meanwhile, if the intervals between the separating walls are narrowed in order to obtain closer contact, the workability of incorporating the PTC heating elements remarkably decreases, resulting in an increase in man-h...

Method used

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  • Heat medium heating apparatus and vehicular air-conditioning system including the same
  • Heat medium heating apparatus and vehicular air-conditioning system including the same
  • Heat medium heating apparatus and vehicular air-conditioning system including the same

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first embodiment

[0032]Hereinafter, a first embodiment of the present invention is described with reference to FIG. 1 to FIG. 6.

[0033]FIG. 1 illustrates a schematic configuration view of a vehicular air-conditioning system including a heat medium heating apparatus according to the first embodiment of the present invention. A vehicular air-conditioning system 1 includes a casing 3 that forms an air flow passage 2 for taking in external air or air inside of a chamber, regulating the temperature of the air, and then guiding the air into the chamber.

[0034]Inside of the casing 3, a blower 4, a cooler 5, a heat radiator 6, and an air mix damper 7 are sequentially set from the upstream side to the downstream side of the air flow passage 2. The blower 4 suctions the external air or the air inside of the chamber, increases the pressure of the suctioned air, and feeds the air under pressure to the downstream side. The cooler 5 cools the air fed under pressure by the blower 4. The heat radiator 6 heats the air...

second embodiment

[0072]Next, a second embodiment of the present invention is described with reference to FIG. 7 and FIG. 8.

[0073]The present embodiment is different from the first embodiment described above in that the spacer members 16 are omitted. The present embodiment is the same as the first embodiment in the other features, and hence description of the other features is omitted.

[0074]In the present embodiment, the control board 17 is placed directly on the upper surface of the heat exchanger holding member 15 such that the screws 25 that fasten the heat exchanger holding member 15 to the boss parts 11D of the lower case 11A do not interfere with the control board 17. In addition, in order to obtain reliable contact between the heat exchanger holding member 15 and the heat penetration parts 22, it is desirable to form the upward convex planar parts 15A at respective positions of the heat exchanger holding member 15, the respective positions corresponding to the heat penetration parts 22 provide...

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Abstract

Provided is a heat medium heating apparatus including: a plurality of flat heat exchanger tubes 12; PTC heaters 13 that are respectively incorporated between flat tube parts of the flat heat exchanger tubes 12; a heat exchanger holding member 15 that press-fixes the flat heat exchanger tubes 12 and the PTC heaters 13, from one side of the flat heat exchanger tubes 12 to an inner surface of a casing 11; and a control board 17 that has a surface on which a control circuit 21 is mounted, the control circuit 21 including heat-generating electrical components 20 that control the PTC heaters 13, in which the control board 17 includes heat penetration parts that are formed so as to pass through the control board 17 correspondingly to mounting positions of the heat-generating electrical components 20, and the heat-generating electrical components 20 are mounted so as to be cooled via the heat penetration parts.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is based on Japanese Patent Application No. 2011-060927, the contents of which are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a heat medium heating apparatus that heats a heat medium using a positive temperature coefficient heater and a vehicular air-conditioning system including the heat medium heating apparatus.[0004]2. Description of Related Art[0005]Vehicular air-conditioning systems applied to an electric car, a hybrid car, and other such cars are generally provided with a heat medium heating apparatus that heats a medium to be heated serving as a heat source for heating equipment, and one of such heat medium heating apparatuses is known to heat a medium using a positive temperature coefficient heater (hereinafter referred to as PTC heater) including a positive temperature coefficient thermistor (hereinafter referred to as PTC elem...

Claims

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Application Information

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IPC IPC(8): F24H1/12
CPCF28F9/005F28D1/03F28D2021/0085F24H1/122B60H2001/2287F24H9/2028F24H3/085B60H1/2221F24H9/1827
Inventor KOMINAMI, SATOSHISATO, HIDETAKANAKAGAMI, TAKASHI
Owner MITSUBISHI HEAVY IND LTD
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