CN100538197C - Electric heater - Google Patents
Electric heater Download PDFInfo
- Publication number
- CN100538197C CN100538197C CNB2007101483485A CN200710148348A CN100538197C CN 100538197 C CN100538197 C CN 100538197C CN B2007101483485 A CNB2007101483485 A CN B2007101483485A CN 200710148348 A CN200710148348 A CN 200710148348A CN 100538197 C CN100538197 C CN 100538197C
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- heat exchange
- cut piece
- gas channel
- electric heater
- heat
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Abstract
The invention discloses a kind of electric heater.Having a plurality of heaters common and cheap parts is used to have in the different vehicle of different heating requirement.This electric heater comprises: the framing component of a pair of interval predeterminable range; When energy supply, produce the heating element heater of heat; A plurality of separators that are stacked between the framing component, it comprises: be used to cut apart and be formed on the space between the framing component (21) and be used to hold and the fixing hot cut piece (22) of heating element heater (22a); Be used to cut apart the non-hot cut piece (22 ') in the space that is formed between the framing component; Be positioned to and hot cut piece (adjacent heat exchange gas channel (25a); Be positioned to adjacent with non-hot cut piece (22 ') and with the non-conterminous non-heat exchange department of hot cut piece (25b); And the metal heat-exchanging piece (23) that only is positioned at the heat exchange gas channel, it helps the heat transmission between heating element heater and air.
Description
Technical field
The present invention relates to a kind of electric heater by supply capability generation heat, and the vehicle air conditioner that uses this electric heater.
Background technology
U.S. Patent No. 5562844 discloses a kind of traditional electric heater, and this electric heater comprises pair of frames and a plurality of cut piece (resinous framework).A plurality of cut piece be substantially the plane and between pair of frames, and formed the reinforcement structure.Be formed for the fixedly thermal resistor of positive temperature coefficient (positive temperature coefficient thermistors) (PTC element) on cut piece, the thermal resistor of this positive temperature coefficient is the heating element heater of known type.Gas channel be formed between the cut piece and cut piece and framework between.
In addition, the electric heater of U.S. Patent No. 5562844 comprises the heat exchanging fin that is placed in the gas channel.This heat exchanging fin helps the heat exchange between PTC element and air.Therefore, electric heater has improved the heat transmission from the PTC element to air.
When this PTC element application to vehicle air conditioner and when entering into the heater of air in Vehicular occupant compartment, the required thermal output of heating efficiency or electric heater is according to vehicle and difference, for example for given vehicle, demand for heat may be according to the weather of vehicle land for sale and difference.That is to say that different vehicles has the passenger carriage of different size and different demand for heat.Further, even for the passenger carriage of identical size, demand for heat may be according to the geographical position of vehicle and difference.In order to reduce the cost of making heater, the shape of preferably single fixed frame and electric heater is used on the various vehicle.
The quantity of PTC element can change to adjust the heating efficiency of electric heater.Yet in this case, the heat exchanging fin that keeps clear of the PTC element that is placed in the gas channel between the cut piece is helpless to heat exchange.In this electric heater, the corrugated heat exchanging fin with sheet metal making of superior heat transfer characteristic (for example aluminium alloy or copper) is used.There is not the existence of the heat exchange used to improve the cost of electric heater.
Summary of the invention
Consider above-mentioned problem, the purpose of this invention is to provide a kind of electric heater, do not change framework or shape to adjust thermal output, and reduce cost.
According to an embodiment, the invention provides a kind of electric heater, comprising: the framing component of a pair of interval predeterminable range; When energy supply, produce the heating element heater of heat; A plurality of separators that are stacked between the described framing component, described a plurality of separators comprise: be used to cut apart the hot cut piece that is formed on the space between the described framing component and is used to hold and fixes described heating element heater; Be used to cut apart the non-hot cut piece in the space that is formed between the described framing component; Be positioned to the heat exchange gas channel adjacent with described hot cut piece; Be positioned to adjacent with described non-hot cut piece and with the non-conterminous non-heat exchange department of described hot cut piece; And the metal heat-exchanging piece that only is positioned at described heat exchange gas channel, described metal heat-exchanging piece helps the heat transmission between described heating element heater and air.
According to this aspect, hot cut piece and Fei Re cut piece are arranged between the framework with a predetermined space.By adjusting the quantity of hot cut piece and heating element heater, thermal output can easily be adjusted, and does not change the framework and the shape of whole electric heater.
In addition, because expensive relatively metal heat-exchanging piece is not placed on non-heat exchange department, the cost of electric heater is lowered.
Preferably, non-heat exchange department is that air can be by gas channel wherein.
Preferably, non-heat exchange department is in a pair of non-heat-exchanging piece, and this non-heat exchange department is between non-heat-exchanging piece.
Preferably, hot cut piece is identical substantially with the Fei Re cut piece, except described hot cut piece comprises the part that is used to accept heating element heater, and does not have heating element heater to be admitted by described non-hot cut piece.
Therefore, because hot cut piece is manufactured by identical member with the Fei Re cut piece, cost is lowered.
Preferably, electric heater also comprises the ventilation flow resistance part that is placed on non-heat exchange gas channel.This ventilation flow resistance part produces the ventilation flow resistance, to resist by the non-air that adds the heat exchange gas channel.The ventilation flow resistance of non-heat exchange gas channel per unit area is identical with the cardinal principle of heat exchange gas channel.
Therefore, even heat-exchanging piece only is positioned at the heat exchange gas channel, electric heater ventilation flow resistance can be so that be that the heater of heat exchange gas channel is the same with all gas channels.
In the present invention, term " substantially identical " not only comprise the heat-exchanging piece place the heat exchange gas channel ventilation flow resistance and heat-exchanging piece not the consistent situation of ventilation flow resistance of gas channel of non-heat exchange, also comprise the situation of the minute differences between the draft resistance of heat exchange and non-heat exchange gas channel that causes owing to foozle or rigging error.
Preferably, ventilation flow resistance part is roughly stepped.Therefore, according to the number change of stairstepping and the shape of column, the ventilation flow resistance of ventilation flow resistance part can easily be adjusted.
Preferably, ventilation flow resistance part is by resin manufacture.Therefore, cost can further reduce.
Preferably, heating element heater is the PTC element.
Preferably, electric heater comprises and is placed on the create antagonism ventilation flow resistance part of ventilation flow resistance of the air that passes through by non-heat exchange gas channel of non-heat exchange gas channel and being used to.Ventilation flow resistance part comprises the outside framework member that limits non-heat exchange gas channel.This outside framework member plays the effect of non-hot cut piece.Column is placed between the relative part of outside framework member.
Preferably, electric heater forms the part of vehicle air conditioner.
According to a further aspect in the invention, electric heater comprises the framing component of a pair of interval preset distance, in the time of energy supply, produce a plurality of heating element heaters of heat, be used to cut apart a plurality of cut piece in the space that is formed between the framing component, the heat exchange gas channel, non-heat exchange gas channel, and the metal heat-exchanging piece that helps the heat exchange between heating element heater and air.Each cut piece is adjusted at least one with the admittance heating element heater.The heat exchange gas channel is positioned adjacent in the heating element heater.Non-heat exchange gas channel and each heating element heater are spaced apart.Heat-exchanging piece only is positioned at the heat exchange gas channel.
Description of drawings
With reference to the accompanying drawings, it is clearer that other purpose, feature and advantage become from following detailed, wherein:
Fig. 1 is the summary sectional view according to the inside air-conditioning unit of the vehicle air conditioner of exemplary embodiment.
Fig. 2 is the overall perspective of demonstration according to the general structure of the electric heater of exemplary embodiment;
Fig. 3 is the top view according to the hot cut piece of the electric heater of exemplary embodiment of Fig. 2;
Fig. 4 is the decomposition diagram in the E district among Fig. 2;
Fig. 5 is the decomposition diagram in the F district among Fig. 2; And
Fig. 6 is the decomposition diagram that shows according to the electric heater part of another exemplary embodiment.
The specific embodiment
With reference to figure 1-4, first exemplary embodiment will be described.Fig. 1 has shown the structure that electric heater 20 is applied to vehicle air conditioner.
Vehicle air conditioner is installed in when engine at first is activated, the temperature of the cooling fluid of raising engine is in very difficult (for example, motor vehicle driven by mixed power or diesel-engine vehicles) vehicle and the vehicle that uses in cold climate.When passenger carriage was at first heated, vehicle air conditioner utilized electric heater 20 as the assisted heating device that is used to heat the interior air that is forced into passenger carriage.
Inner air-conditioning unit 1 is placed on the inside of the instrument board (instrument face plate) of the passenger carriage of vehicle.Inner air-conditioning unit 1 comprises the casing 2 by resin manufacture.Casing 2 has formed the outside of unit 1.Air communication is crossed the gas channel that wherein flows to passenger carriage and is formed in the casing 2.Inner air and outer air ConvertBox 3 is placed on the upstream portion of casing 2.
Inner air and outer air ConvertBox 3 comprises inner air intake 4, extraneous air intake 5 and inner air and outer air switching door 6.Inner air intake 4 is to allow inner air (air in the passenger carriage) to enter into the inlet of casing 2 the insides.Extraneous air intake 5 is to allow extraneous air (air that enters outside passenger carriage) to enter into the interior inlet of casing.Inner air and outer air is switched door 6 and is placed in rotation in the inner air and outer air ConvertBox 3.It is inside and outside air device for switching that inner air and outer air is switched door 6, by the driven by servomotor that does not show.
More specifically, the pattern of inner air and outer air ConvertBox 3 can change under various patterns, and various patterns are: the inner air pattern, and inner air is introduced into from intake 4 under this pattern; Exterior air patterns, under this pattern, extraneous air is introduced into from extraneous air intake 5; And the inside/outside air mode, under this pattern, because inner air and outer air is switched the position of the rotation of door 6, inner air and outside blowing air are introduced into simultaneously.Fig. 1 has shown the inner air pattern, and wherein inner air is introduced in casing 2 as shown by arrow A.
The hair drier 7 that forces air to enter into passenger carriage is placed on the upstream extremity of the casing 2 in the inner air and outer air ConvertBox 3.Hair-dryer 7 rotates known eccentric multiple-blade fan 7a blow air in the direction of arrow B by utilizing motor 7b.The evaporimeter of cooling heat exchanger is placed on the downstream of hair-dryer 7, and heat exchanger is used to cool off air.
Heater core 9 is to utilize the cooling fluid of engine to be used to heat heat exchanger by the air (cold air) of evaporimeter 8.Bypass channel 10 is formed on a side of the heater core of casing 2.In bypass channel 10, pass through heater core 9 through air (cold air) bypass of evaporimeter 8.
In the vehicle air conditioner of present embodiment, electric heater 20 is placed on the downstream of heater core 9.Electric heater 20 is to be used for utilizing electric power to produce the auxiliary heater of heat from unshowned controller, and is used for when heater core 9 can not heat the air that comes flash-pot 8 fully, and heating is through the air of heater core 9.The details of electric heater 20 below will illustrate.
For by the control of control module, for example can adopt following control to electric heater 20.The control module (not shown) detects the temperature through the engine coolant of heater core 9.When temperature was lower than default temperature, control module determined that heater core can not heat the air through evaporimeter 8 fully, and control module is to heater 20 supply capabilities.
According to the aperture of air mix door 11, the fluid ratio of air capacity by heater core 9 and electric heater 20 (warm air amount such as arrow C show) and the air capacity by bypass channel 10 (the cold air amount as shown by arrow D) is adjusted.Because warm air (arrow C) and cold air (arrow D) in the mixed downstream of heater core 9, electric heater 20 and bypass channel 10, are forced into passenger carriage then, the adjustment of temperature by flow rate that enters into the air of passenger carriage thus is adjusted.
3 kinds of outlet 12-14 are placed on the downstream of casing 2.One in the 12-14 outlet is the defrosting outlet (defrosteroutlet) 12 that is used for the air after regulating is blowed to the front screen (preceding weatherstrip window) of vehicle.In the 12-14 outlet another is the face outlet that is used for the air after regulating is blowed to passenger's face.In the 12-14 outlet another is the pin outlet that is used for the air after regulating is blowed to feet of passengers.
Defrosting door 15, face door, pin door are arranged on the upstream side of these outlets 12-14 respectively pivotly.Door 15-17 opens and closes by the bindiny mechanism that does not show rotationally by common servomotor.Fig. 1 has shown the defrosting mode that defrosting door 15 and pin door 17 are opened simultaneously.
Next step is according to Fig. 2-4, with the details of electric heater 20.Fig. 2 is the overall perspective of general structure that shows the electric heater of present embodiment.Upper and lower among Fig. 2, left and right arrow indication electric heater 20 is installed in the state on the vehicle air conditioner.
The details of hot cut piece 22 is presented among Fig. 3.Fig. 3 is the top view of a hot cut piece 22.As shown in Figure 3, hot cut piece 22 is made of the plate type member at the longitudinal extension of framing component 21.The hole 22b that penetrates at stacking direction (direction top to bottm among Fig. 2) forms on hot cut piece 22.Each hole 22b plays and is used for admitting and fixedly one the effect of PTC element 22a.
On the other hand, the non-hot cut piece 22 ' planar member identical that be shape with hot cut piece 22.In non-hot cut piece 22 ', in any one hole 22b, all there is not PTC element 22a.In other words, non-hot cut piece 22 ' is identical with hot cut piece 22, except there not being PTC element 22a.
Each PTC element 22a is the thermal resistor with positive temperature coefficient of temp autocontrolled system function.Especially, the temperature of each PTC element 22a raises when energy supply immediately.Resistance value improves rapidly, with the restriction electric current, and keeps heat to produce when temperature reaches preset temperature (curie point).
In gas channel 25a, 25b, the gas channel contiguous with the hot cut piece 22 that is used to install at least one PTC element 22a is heat exchange gas channel 25a, and wherein air is heated by the heat of PTC element 22a.In other words, being positioned between framing component 21 and the Fei Re cut piece 22 ' is exchange gas channel 25a.In gas channel 25a, 25b, being positioned at two gas channels between the non-hot cut piece 22 ' is non-heat exchange gas channel 25b.In other words, the gas channel except heat exchange gas channel 25a is non-heat exchange gas channel 25b.
Heat-exchanging piece 23 helps the heat exchange between PTC element 22a and the air.23 of heat-exchanging pieces are positioned at heat exchange gas channel 25a.
Shown in the decomposition diagram of Fig. 4, each heat-exchanging piece 23 comprises corrugated heat exchanging fin 23a (corrugate fin), and this corrugated heat exchanging fin is the foil (for example, aluminium alloy or copper) with remarkable thermal conduction characteristic.Each corrugated heat exchanging fin 23a has corrugated pattern.The metallic plate 23b (being aluminium alloy plate in the present embodiment) that is made by the metal identical with corrugated heat exchanging fin 23a centers on corrugated heat exchanging fin 23a, as shown in Figure 4.Each corrugated heat exchanging fin 23a is inserted between the metallic plate 23b.Metallic plate 23b is with the corrugated heat exchanging fin 23a of definite shape clamping, and the contact zone that contacts with hot cut piece 22,22 ' formation face-face of formation.Metallic plate 23b and corrugated heat exchanging fin 23a23a are that soldering connects (brazing connects).
The empty part 24 of resin is placed in the non-heat exchange gas channel 25b.The empty part 24 of resin forms ventilation flow resistance part, if so that the ventilation flow resistance that the ventilation flow resistance of non-heat exchange gas channel 25b and heat-exchanging piece 23 exist when being placed on non-heat exchange gas channel 25b equate.In other words, the ventilation flow resistance of the non-heat exchange gas channel 25b of every cellar area is identical substantially with the ventilation flow resistance of heat exchange gas channel 25a.
The empty part 24 of resin is to make by having identical stable on heating resin material with hot cut piece 22,22 '.Shown in the decomposition diagram of Fig. 5, the empty part 24 of resin comprises the outside framework 24a that forms along the periphery of non-heat exchange gas channel 25b and a plurality of column 24b, and these a plurality of columns are set between the outside framework 24a.Column 24b extends (direction top to bottm among Fig. 2) on the direction of piling up.The empty part 24 of resin has the shape of ladder when the direction of air-flow is seen, as shown in Figure 2.
Therefore, because the empty part 24 of resin has the shape of ladder, the empty part 24 of resin can keep the shape of being scheduled to.In addition, by changing shape or the quantity of column 24b, the ventilation flow resistance can easily be adjusted.
The details of the stacked structure of the parts 22,22 ', 23,24 in the electric heater 20 of present embodiment kind illustrates in Fig. 4-Fig. 5.
Fig. 4 is the decomposition diagram in the E district of the electric heater 20 among Fig. 2.Fig. 5 is the decomposition diagram in the F district of the electric heater 20 among Fig. 2.
As shown in Figure 4, each PTC element 22a is admitted and is fixed in the hole 22b of hot cut piece 22.Therefore, the gas channel of proximity thermal cut piece 22 is heat exchange gas channel 25a (seeing the E part of Fig. 2).Heat-exchanging piece 23 is set at the both sides of each hot cut piece 22, for example shown in the E part of Fig. 2.
On the other hand, as shown in Figure 5, the F part in Fig. 2, fixing PTC element 22a not in the hole 22b of non-hot cut piece 22 '.Therefore, the gas channel between heat-exchanging piece and non-heat-exchanging piece 22 ' is non-heat exchange gas channel 25b.The F district of the empty part 24 of resin in Fig. 2 is set at below the non-hot cut piece 22 ', as shown in Figure 5.
The operation of electric heater 20 will be described below.When vehicle air conditioner heats air and heater core 9 can not fully heat air through evaporimeter 8 time, electric heater 20 produces heats from the control module supply capability time.Therefore, because electric heater 20 can heat the air that is delivered to passenger carriage, therefore in the vehicle air conditioner of present embodiment, can realize the heating immediately of air.
In addition, in the electric heater 20 in the present embodiment, split component 22,22 ' reach each other with framing component 21 between with the distance that equates at interval.The thermal output of electric heater 20 or heat energy power are only set by placement and the predetermined number of the corresponding PTC element of the hole 22b 22a of hot cut piece 22.Therefore, the heat energy power or the thermal output of electric heater 20 can easily be adjusted, and do not change the framework or the shape of heater 20.
Because relatively expensive metal heat-exchanging piece 23 is not placed in the non-heat exchange gas channel 25b, cost is lowered.
In addition, because hot cut piece 22 is made of identical plate with Fei Re cut piece 22 ', the cost of electric heater 20 can be lowered.
The empty part 24 of resin is formed, if make the ventilation flow resistance of non-heat exchange gas channel 25b ventilation flow resistance of existence when placing heat-exchanging piece 23 in non-heat exchange gas channel 25b equate.Because the empty part 24 of resin is placed in the non-thermal current passway 25b, even when the thermal output of electric heater 20 is adjusted by the quantity that changes the PTC element, the ventilation flow resistance of electric heater 20 can not change.
In addition, because the empty part of resin 24 is made by resin, the cost of electric heater 20 is lowered.
(other embodiment)
Although with reference to the accompanying drawings, combine with preferred embodiment, the present invention is fully described, obviously may have various changes and modification for a person skilled in the art.
(1) in the embodiment of explanation, hot cut piece 22 is made of identical parts in order to reduce cost with Fei Re cut piece 22 '.Yet the present invention is not limited to this.Non-hot cut piece 22 ' can be made of the plate that does not comprise hole 22b.
(2) in the embodiment of explanation, the empty part 24 of resin is placed in the non-heat exchange gas channel 25b.Yet when thermal output changed, the ventilation flow resistance of electric heater 20 was changed into another kind of type of vehicle from a kind of type of vehicle, and when this was not a problem, the empty part 24 of resin can dispense.
In another kind distortion, the non-hot cut piece 22 ' that forms non-heat exchange gas channel 25b can be omitted, and the outside framework 24a of the empty part 24 of resin can be used as non-hot cut piece 22 ', as shown in Figure 6.In this modification, the cost of electric heater 20 can reduce further.
(3) in the embodiment of explanation, 4 heat exchange gas channel 25a and a non-heat exchange gas channel 25b are formed in the electric heater 20, as shown in Figure 2.Yet the quantity of heat exchange gas channel 25a and non-heat exchange gas channel 25b is so restriction not.The quantity of heat exchange gas channel 25a and non-heat exchange gas channel 25b can change according to the thermal output of electric heater 20.
(4) in the embodiment of explanation, electric heater 20 is set at the downstream of heater core 9.Yet it also can be arranged in the pin passage (for illustrating) in downstream of pin outlet 14, and the foot of the air guide user after will regulating.Further, electric heater 20 also can be incorporated in the heater core 9.
(5) in the embodiment of explanation, electric heater can be used for various approach, is not limited to vehicle air conditioner.
(6) in the embodiment of explanation, non-heat exchange gas channel 25b is formed between the non-hot cut piece 22 '.Yet the air-flow between non-hot cut piece 22 ' also can be prevented from.
(7) in the embodiment of explanation, non-heat exchange gas channel 25b is formed between the non-hot cut piece 22 '.Yet non-heat exchange gas channel 25b can be formed between non-hot cut piece 22 ' and the framework 21.
This change and modification are construed as and are limited in the claim institute restricted portion of enclosing.
Claims (11)
1. electric heater comprises:
The framing component (21) of a pair of interval predeterminable range;
When energy supply, produce the heating element heater (22a) of heat;
A plurality of separators (22,22 ') that are stacked between the described framing component (21), described a plurality of separators (22,22 ') comprising:
Be used to cut apart the hot cut piece (22) that is formed on the space between the described framing component (21) and is used to hold and fixes described heating element heater (22a);
Be used to cut apart the non-hot cut piece (22 ') that is formed on the space between the described framing component (21);
Be positioned to the heat exchange gas channel (25a) adjacent with described hot cut piece (22);
Be positioned to adjacent with described non-hot cut piece (22 ') and with the non-conterminous non-heat exchange department of described hot cut piece (22) (25b); And
Only be positioned at the metal heat-exchanging piece (23) of described heat exchange gas channel (25a), described metal heat-exchanging piece (23) helps the heat transmission between described heating element heater (22a) and air.
2. electric heater as claimed in claim 1, wherein, described non-heat exchange department (25b) is that air can be by gas channel wherein.
3. electric heater as claimed in claim 1 or 2, wherein, described non-hot cut piece (22 ') is in a pair of non-hot cut piece (22 '), and described non-heat exchange department (25b) is positioned between the described non-hot cut piece (22 ').
4. electric heater as claimed in claim 1, wherein, described hot cut piece (22) is identical substantially with described non-hot cut piece (22 '), except described hot cut piece (22) comprises the part that is used to accept heating element heater (22a), and there is not heating element heater (22a) to be admitted by described non-hot cut piece (22 ').
5. electric heater as claimed in claim 2, further comprise the ventilation flow resistance part (24) that is arranged in the non-heat exchange gas channel (25b), wherein said ventilation flow resistance part (24) creates antagonism by the draft resistance of the air of non-heat exchange gas channel (25b), and the ventilation flow resistance of wherein non-heat exchange gas channel (25b) per unit area is identical substantially with the ventilation flow resistance of heat exchange gas channel (25a).
6. electric heater as claimed in claim 5, wherein, described ventilation flow resistance part (24) is roughly stepped.
7. electric heater as claimed in claim 5, wherein, described ventilation flow resistance part (24) is by resin manufacture.
8. electric heater as claimed in claim 1, wherein, described heating element heater (22a) is the PTC element.
9. electric heater as claimed in claim 1, further comprise ventilation flow resistance part (24), described ventilation flow resistance part is arranged on described non-heat exchange gas channel (25b) neutralization be used to the to create antagonism ventilation flow resistance of the air by described non-heat exchange gas channel (25b), wherein, described ventilation flow resistance part (24) comprises the outside framework member (24a) that limits described non-heat exchange gas channel (25b), wherein, this outside framework member (24a) plays the effect of non-hot cut piece (22 '), and its central post (24b) is set between the relative part of described outside framework member (24a).
10. electric heater as claimed in claim 1, wherein, described electric heater forms the part of vehicle air conditioner.
11. an electric heater comprises:
The framing component (21) of a pair of interval preset distance;
A plurality of heating element heaters (22a) that when energy supply, produce heat;
Be used to cut apart a plurality of cut piece (22,22 ') that are formed on the space between the described framing component (21), wherein each cut piece (22,22 ') is set up in order to accept at least one described heating element heater (22a);
Be positioned to and one of described heating element heater (22a) adjacent heat exchange gas channel (25a);
Each isolated non-heat exchange gas channel (25b) with heating element heater (22a); And
Only be positioned at the metal heat-exchanging piece (23) of described heat exchange gas channel (25a), described metal heat-exchanging piece (23) helps the heat exchange between described heating element heater (22a) and air.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006245266 | 2006-09-11 | ||
| JP2006245266 | 2006-09-11 | ||
| JP2007099040 | 2007-04-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101144649A CN101144649A (en) | 2008-03-19 |
| CN100538197C true CN100538197C (en) | 2009-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101483485A Expired - Fee Related CN100538197C (en) | 2006-09-11 | 2007-08-31 | Electric heater |
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| Country | Link |
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| CN (1) | CN100538197C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009298274A (en) * | 2008-06-12 | 2009-12-24 | Mitsubishi Electric Corp | Vehicular ventilating and air-conditioning device |
| JP2013180690A (en) * | 2012-03-02 | 2013-09-12 | Mitsubishi Heavy Ind Ltd | Heat medium heating device and vehicle air conditioner including the same |
| DE102018204058A1 (en) * | 2018-03-16 | 2019-09-19 | Mahle International Gmbh | Arrangement for heating a vehicle interior |
| DE102018204059A1 (en) * | 2018-03-16 | 2019-09-19 | Mahle International Gmbh | Arrangement for heating a vehicle interior |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5562844A (en) * | 1992-06-23 | 1996-10-08 | David & Baader - Dbk- Spezialfabrik Elektrischer Apparate Und Heizwiderstande Gmbh | Ptc heater radiator with frame members applying pressure to heaters |
| CN2500059Y (en) * | 2001-08-23 | 2002-07-10 | 台州市凯乐电器有限公司 | Electrode self connection ripple electric heater |
-
2007
- 2007-08-31 CN CNB2007101483485A patent/CN100538197C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5562844A (en) * | 1992-06-23 | 1996-10-08 | David & Baader - Dbk- Spezialfabrik Elektrischer Apparate Und Heizwiderstande Gmbh | Ptc heater radiator with frame members applying pressure to heaters |
| CN2500059Y (en) * | 2001-08-23 | 2002-07-10 | 台州市凯乐电器有限公司 | Electrode self connection ripple electric heater |
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| Publication number | Publication date |
|---|---|
| CN101144649A (en) | 2008-03-19 |
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Granted publication date: 20090909 Termination date: 20180831 |