CN210688431U

CN210688431U - Heating device

Info

Publication number: CN210688431U
Application number: CN201921377054.4U
Authority: CN
Inventors: 门少国; 邵玉清
Original assignee: Hebei Shenhai Electrical Appliances Co ltd
Current assignee: Hebei Shenhai Electrical Appliances Co ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-06-05
Anticipated expiration: 2029-08-23

Abstract

The utility model provides a heater, it includes: heating body subassembly, controller, first plug-in components, second plug-in components, the heating body subassembly includes: the heat conduction plate is provided with a first surface and a second surface which are opposite, an electric heating film is arranged on the first surface, the sealing cover covers the second surface, the sealing cover is matched with the heat conduction plate to form a water inlet chamber, a water outlet chamber and a plurality of flow channels communicated with the water inlet chamber and the water outlet chamber, an isolation plate for isolating the water inlet chamber from the water outlet chamber is arranged in the middle of the second surface, and the first plug-in component is used for connecting a first power supply for providing heat source power for the heating main body component; the second plug-in is used for connecting a second power supply for providing an electric signal for the controller; the controller is electrically connected with the first plug-in and the second plug-in. The utility model provides a heater specifically is electric heat membrane plate heater, can be applicable to new energy automobile better.

Description

Heating device

Technical Field

The utility model relates to a new energy automobile heating technical field especially relates to a heater.

Background

The new energy automobile refers to all other energy automobiles except gasoline and diesel engines, and can comprise a fuel cell automobile, a hybrid automobile, a hydrogen energy power automobile, a solar energy automobile and the like. The new energy automobile can gradually replace a fuel automobile due to low exhaust emission.

In order to meet the heating requirement of users in low-temperature environments, a heater is generally installed on an automobile for heating. The heater in the existing fuel automobile is mainly a fuel heater, and the working principle is as follows: firstly, the heating medium generates heat through fuel oil combustion, and then the heating medium obtains heat through heat exchange, so that the heating function is realized. The existing fuel oil heater has the problem of difficult starting because the phenomenon of wax precipitation of fuel oil is easy to occur under the low-temperature environment.

Based on the energy characteristics of new energy vehicles, most new energy vehicles are generally not equipped with fuel at present, and in addition to the defects of fuel heaters, the fuel heaters used by the original fuel vehicles also need to be gradually replaced by novel energy heaters. Therefore, the application provides a heater suitable for new energy automobile.

SUMMERY OF THE UTILITY MODEL

Based on aforementioned prior art defect, the utility model discloses embodiment provides a heater suitable for new energy automobile, especially an electric heat membrane plate heater can satisfy the user demand of less power.

In order to achieve the above object, the present invention provides the following technical solutions.

A heater, comprising: heating body subassembly, controller, first plug-in components, second plug-in components, the heating body subassembly includes: the heat conduction plate is provided with a first surface and a second surface which are opposite, an electric heating film is arranged on the first surface, the sealing cover is covered on the second surface, the sealing cover and the heat conduction plate are matched to form a water inlet chamber, a water outlet chamber and a plurality of flow channels which are communicated with the water inlet chamber and the water outlet chamber, an isolation plate which isolates the water inlet chamber from the water outlet chamber is arranged in the middle of the second surface, and the first plug-in component is used for being connected with a first power supply which provides heat source power for the heating main body component; the second plug-in is used for connecting a second power supply for providing an electric signal to the controller; the controller is electrically connected with the first plug-in unit and the second plug-in unit.

In a preferred embodiment, the flow channel includes a plurality of sub-flow channels arranged in parallel, a plurality of protrusions are arranged on the second surface, the protrusions are used as side walls of the sub-flow channels, each sub-flow channel has an inlet end connected to the water inlet chamber and an outlet end connected to the water outlet chamber, the cross section of the sub-flow channel is an open slot with one open end, the plurality of sub-flow channels arranged in parallel are symmetrically distributed on the heat conducting plate on two sides of the partition plate, and the inlet end and the outlet end are located on the same side.

In a preferred embodiment, a plurality of the sub-flow channels are distributed on the heat conducting plate at equal intervals.

In a preferred embodiment, the distance between two adjacent sub-channels is between 10 mm and 13 mm.

In a preferred embodiment, the controller is provided with a storage unit in which at least one of the following is stored: the working temperature range of the fluid in the heater and the highest surface temperature of the electric heating film.

In a preferred embodiment, the heater further comprises: and the temperature sensor is arranged at the outlet end, or the water outlet chamber, or the water outlet and is used for collecting the temperature of the fluid heated by the heating main body component.

In a preferred embodiment, the heater further comprises: and the overtemperature sensor is electrically connected with the controller, is in contact with the electrothermal film and is used for acquiring the surface temperature of the electrothermal film.

In a preferred embodiment, the heater further comprises: and the water flow switch is arranged at the flow channel or the upstream or downstream position communicated with the flow channel and used for detecting whether fluid flows.

In a preferred embodiment, the heater further comprises an outer cover, the controller is arranged on one side of the heat conducting plate, where the electric heating film is arranged, the outer cover is arranged on the periphery of the controller and the electric heating film and fixedly connected with the heat conducting plate, and a first mounting hole for mounting the first plug-in unit and a second mounting hole for mounting the second plug-in unit are further arranged on the outer cover.

In a preferred embodiment, the heat conducting plate has a first area for disposing an electric heating film, a second area for forming the water inlet chamber, and a third area for forming the water outlet chamber, and the third area is provided with an opening for installing the temperature sensor.

Has the advantages that:

the heater provided by the utility model adopts the electric heating principle, and can be widely applied to the heating system of new energy vehicles; the device can be particularly applied to low-temperature heating of the power battery of the new energy automobile in winter, so that the power battery is ensured to be fully discharged, and the discharge capacity of the battery is provided; in addition, the method can also be applied to a heating system in an environment without fuel oil. The technology has the advantages of good reliability, no harmful gas emission, controllable heating temperature, high heating efficiency, basically no noise, convenient installation and maintenance and long service life.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for helping the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. The skilled person in the art can, under the teaching of the present invention, choose various possible shapes and proportional dimensions to implement the invention according to the specific situation. In the drawings:

FIG. 1 is a front view of a heater provided in an embodiment of the present application;

FIG. 2 is a left side view of a heater provided in an embodiment of the present application;

FIG. 3 is a cross-sectional view of a heater provided in an embodiment of the present application;

FIG. 4 is a cross-sectional view A-A of the heater of FIG. 3;

FIG. 5 is a schematic view of a heating body assembly provided in an embodiment of the present application, shown with an internal cross-sectional configuration;

FIG. 6 is a sectional view B-B of the heating body assembly of FIG. 5;

fig. 7 is a C-C sectional view of the heating body assembly of fig. 5.

Description of reference numerals:

1. a housing;

2. a first plug-in;

3. a second plug-in;

4. a controller;

5. heating the body assembly; 50. a sub-flow channel; 501. a boss portion; 51. a heat conducting plate; 52. an electrothermal film; 53. a water inlet chamber; 54. a water outlet chamber; 55. a separator plate; 56. a sealing cover;

6. overtemperature sensor

7. A temperature sensor;

8. a water flow switch;

9. a water outlet;

10. a water inlet.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The utility model discloses embodiment provides a heater particularly, is an electric heat membrane plate heater, and it can apply to in the inside heating system of new energy automobile, also can be used as the heat source in other non-fuel heating systems.

The heater provided in the specification is mainly exemplified by being applied to a new energy automobile, and other application scenarios can be adaptively replaced according to actual needs, which are not described herein one by one.

The application provides a heater, specifically electric heat membrane plate heater. The electric heating film plate heater is heated by a vehicle-mounted power supply and provides a heat source for a vehicle-mounted heating system. When the new energy automobile adopts the electrothermal film plate heater, the heater adopts the electrothermal film heating plate for heating. Specifically, the electrothermal film heating plate is made of an aluminum alloy material, one side of the heating plate is a plane, an electrothermal film containing a heating circuit is printed, the circuit generates heat after being electrified, heat is conducted to the aluminum alloy material heating plate to the other side through the electrothermal film, a flow channel (such as a U-shaped water channel) is designed on the other side of the aluminum alloy heat conducting plate, then the heated aluminum alloy heating plate conducts the heat to a liquid medium flowing in the water channel through the U-shaped water channel wall, and the liquid medium is heated.

As shown in fig. 1 to 4, the heater according to an embodiment of the present invention may include: heating body subassembly 5, controller 4, first plug-in components 2, second plug-in components 3. Further, the heater may further include: a temperature sensor 7, a water flow switch 8, an over-temperature sensor 6 and the like.

Referring to fig. 5 to fig. 7, the heating main body assembly 5 in the present specification mainly includes: a heat-conducting plate 51, an electrothermal film 52 and a sealing cover 56.

In this specification, the heat conductive plate 51 is a flat plate having a certain thickness as a whole, and has a first surface and a second surface opposite to each other. The first surface is provided with an electric heating film 52. The heat conducting plate 51 may be made of a material having a good heat conducting property, for example, an aluminum alloy material. Of course, the material of the heat conductive plate 51 is not limited to the form of aluminum alloy, and the present application is not limited thereto.

The sealing cover 56 covers the second surface, and the sealing cover 56 is matched with the heat conducting plate 51 to form a water inlet chamber 53, a water outlet chamber 54 and a flow passage for communicating the water inlet chamber 53 with the water outlet chamber 54. The middle of the second surface is provided with a partition plate 55 separating the inlet chamber 53 and the outlet chamber 54.

In an embodiment, the flow channel includes a plurality of sub-flow channels 50 arranged in parallel, a plurality of protrusions 501 are disposed on the second surface, the protrusions 501 are used as sidewalls of the sub-flow channels 50, each sub-flow channel 50 has an inlet end connected to the water inlet chamber 53 and an outlet end connected to the water outlet chamber 54, a cross section of the sub-flow channel 50 is an open slot with an open end, the plurality of sub-flow channels 50 arranged in parallel are symmetrically distributed on two sides of the heat conducting plate 51 of the partition plate 55, and the inlet end and the outlet end are located on the same side.

In the present embodiment, a plurality of protrusions 501 having a certain height are disposed on the second surface, and the protrusions 501 are used to form the sidewalls of the sub-flow channels 50. The height of the boss 501 may be slightly less than the height of the separator plate 55.

The cross section of the sub-flow channel 50 may be an open groove with one end open. Specifically, the open slot may be in the form of a U-shaped slot or a rectangular slot. Each of the sub-flow passages 50 extends along the partition plate 55 on the second surface of the heat conductive plate 51 to integrally form parallel flow passages having a substantially U-shape in plan view.

During operation, water entering the inlet chamber 53 from the inlet 10 uniformly enters each sub-flow channel 50 through the inlet end, flows in a direction parallel to the partition plate 55, changes the flow direction after moving to the end of the partition plate 55, namely, turns the flow direction by 180 degrees, flows in a direction parallel to the partition plate 55, and finally converges from the outlet end of each sub-flow channel 50 to the outlet chamber 54 and flows out from the outlet 9.

When the flow channel between the heat conducting plate 51 and the sealing cover 56 is of the above structure, the contact heat conducting area of the heat conducting plate 51 and the liquid medium can be increased, the liquid medium can be controlled to flow reasonably and effectively, and the heat in the heat conducting dead angle of the heat conducting plate 51 can be prevented from being conducted to the liquid medium.

In the present embodiment, the plurality of sub-flow passages 50 are distributed on the heat transfer plate 51 at the same interval. When the intervals of each sub-flow channel 50 are the same, it means that the flow cross section of each sub-flow channel 50 is substantially the same, so that the flow velocity in each sub-flow channel 50 can be kept substantially the same, which is beneficial to ensuring that the heat conduction effect is also substantially the same everywhere.

In a specific embodiment, the distance between two adjacent sub-runners 50 is between 10 mm and 13 mm.

Generally, if the size of the space is smaller, the larger the heat conducting area is, the higher the heating efficiency of the heater is; however, considering that the smaller the size of the liquid resistance flowing through the sub-flow path 50, the larger the liquid resistance, which is disadvantageous to the entire circulation system of the user. Therefore, through experimental verification, the distance between two adjacent sub-runners 50 is determined to be between 10 mm and 13 mm, which is a reasonable groove distance.

In the present description, the inlet end of each sub-flow channel 50 is connected to an inlet chamber 53, and the inlet chamber 53 is mainly used as a transition communication between the inlet 10 and the inlet end, so as to distribute the fluid flowing in from the inlet 10 to each inlet end uniformly. The outlet end of each sub-channel 50 is connected to an outlet chamber 54, and the outlet chamber 54 is mainly used as a transition connection between the outlet 9 and the outlet end, and is used for collecting the fluid flowing out from the outlet end, so as to ensure that the fluid flowing out from the outlet end can uniformly flow to the outlet 9.

In the present description, the first insert 2 is embodied as a high voltage insert for connection to a first power source providing electrical power to the heating body assembly 5. The first power supply is a high-voltage power supply, and specifically can be a vehicle-mounted high-voltage power supply. When the electric heater is used, the high-voltage plug-in is butted with a vehicle-mounted high-voltage power supply to provide electric power for a heater heat source.

In the present description, the second card 3 is embodied as a low-voltage card for connecting to a second power supply for supplying an electrical signal to the controller 4. The second power supply is a low-voltage power supply, and specifically can be a vehicle-mounted low-voltage power supply. When in use, the low-voltage plug-in is butted with a vehicle-mounted low-voltage power supply and provides an electric signal for the controller 4.

The controller 4 controls the high-voltage power supply to be communicated with or disconnected from the heating main body assembly 5, so that the heating main body assembly 5 works to generate temperature rise for heating. The controller 4 controls the low-voltage power supply signal to be distributed to the temperature sensor 7, the water flow switch 8 and the over-temperature sensor 6, and then the low-voltage power supply signal is fed back to the controller 4, so that the parameters and functions of the heater are effectively controlled, and the reliability of the electric heating film 52 heat pipe heater is ensured.

In one embodiment, the controller 4 is provided with a storage unit in which at least one of the following is stored: the temperature range in which the fluid in the heater operates, and the maximum surface temperature of the electrothermal film 52.

In this specification, in order to control the temperature of the fluid heated by the heating body assembly 5 within a reasonable temperature range, the heater may further include: and the temperature sensor 7 is electrically connected with the controller 4. The temperature sensor 7 is used for collecting the temperature of the fluid heated by the heating main body component 5. In particular, the temperature sensor 7 may be disposed at the outlet end, or the outlet chamber 54, or the outlet 9. Of course, the temperature sensor 7 is not excluded from being located in the pipeline downstream of the water outlet 9, as long as the temperature of the heated fluid can be detected.

In the present embodiment, the water temperature is monitored in real time by providing the temperature sensor 7. When the working temperature range of the fluid stored in the storage unit is adjusted, the temperature of the fluid heated by the heating main body assembly 5 can be controlled within a set temperature range by matching with the intelligent control of the controller 4, so that different temperature requirements of different users can be met.

The controller 4 may receive the temperature setting signal of the user in a wired or wireless manner, for example, the controller 4 may establish communication with a control panel or a mobile phone of the user, and when the user inputs the temperature requirement, the temperature requirement may be stored in the storage unit.

In this specification, in order to prevent the over-temperature phenomenon of the electric heating film 52 during operation, the heater may further include: and the overtemperature sensor 6 is electrically connected with the controller 4. The overtemperature sensor 6 is in contact with the electrothermal film 52 and is used for acquiring the surface temperature of the electrothermal film 52. When the overtemperature sensor 6 detects an overtemperature signal of the electrothermal film 52, the controller 4 can control the heating main body assembly 5 to stop heating.

In one embodiment, in order to prevent the fluid in the heating body assembly 5 from flowing, the electric heating film 52 is electrically heated, so that the over-temperature phenomenon occurs, the heater may further include: and the water flow switch 8 is electrically connected with the controller 4. Specifically, the water flow switch 8 is disposed in the flow passage, or at an upstream or downstream position in communication with the flow passage, for detecting whether there is a fluid flowing. When the electric heating film 52 is used specifically, if the liquid medium flowing is detected, the water flow switch 8 provides the detected signal for the controller 4, and the controller 4 controls the electric heating film 52 to be electrified and heated; on the contrary, the water flow switch 8 does not detect the flowing liquid medium, then the controller 4 powers off the electric heating film 52, prevents the electric heating film 52 from heating under the condition that the liquid medium does not flow, and plays a role in safety protection.

In one embodiment, the heater may further comprise a housing 1. The controller 4 sets up the heat-conducting plate 51 is provided with the one side of electric heat membrane 52, dustcoat 1 sets up controller 4 with the periphery of electric heat membrane 52, and with heat-conducting plate 51 fixed connection, set up on the dustcoat 1 and be used for the installation first mounting hole of first plug-in components 2, and be used for the installation the second mounting hole of second plug-in components 3.

Specifically, the heat conducting plate 51 has a first region for disposing the electric heating film 52, a second region for forming the water inlet chamber 53, and a third region for forming the water outlet chamber 54, and the third region is provided with an opening for installing the temperature sensor 7.

Overall, the utility model discloses an adopt the board-like heating structure form of electric heat membrane, be the heat-conducting plate 51 that adopts to be provided with electric heat membrane 52 as heating element, electric heat membrane 52 circular telegram generates heat, heat-conducting plate 51 one side closely prints electric heat membrane 52, the opposite side flows the heating liquid medium, the heat that the circular telegram of electric heat membrane 52 produced is conducted to the heating liquid medium in the heat-conducting plate 51 opposite side slot type U type water course through heat-conducting plate 51, realizes the heat exchange.

On the whole, the utility model provides a when the heater is used in the new forms of energy car to the electric heat membrane 52 heating of the external application of first surface that vehicle DC power supply passes through heat-conducting plate 51, carries out the heat exchange with electric heat membrane 52 when the fluid medium flows through the runner in the heat-conducting plate 51, and concrete heat transfer process is as follows: the liquid medium enters the inlet chamber 53 from the inlet 10 and then passes through the flow passage, and at this stage, the heat generated by heating the electric heating film 52 is conducted to the liquid medium through the heat conducting plate 51 to realize heat exchange, so as to heat the liquid medium, and then, the heated liquid medium flows through the outlet chamber 54 and flows out of the heating body assembly 5, so that the heat is transferred to the heat dissipation system through the liquid medium.

Further, to the embodiment that is provided with rivers switch 8, the liquid medium after the heating flows out behind heating main part subassembly 5, can flow through rivers switch 8, and under rivers switch 8 the on-state, liquid medium gets into delivery port 9, flows into the heating system pipeline, provides the heat source for heating system to realize heating in the car, guarantee winter vehicle internal environment temperature's affairs, improve passenger's travelling comfort.

The heater provided by the specification is particularly an electrothermal film plate heater which is generally suitable for vertical placement (water inlet and outlet in the vertical direction) and generally low in power and below 7 KW.

Overall, the heater that this application provided has following technological effect:

1) the heating source adopting electric heating is solved, and zero emission is realized.

2) The electric heating film plate type heating structure is adopted, the water channel in the heating plate adopts the sub-channel 50 with the cross section being in a groove type U shape, the heat exchange area of the heating liquid medium and the heating plate is prolonged, and the heat exchange efficiency is improved.

3) The overheating safety protection function: the outer surface of the electric heating film 52 adopts an overtemperature sensor 6 to acquire the surface temperature of the electric heating film 52, exceeds the safe set temperature of the electric heating film 52, and controls the automatic power-off of the electric heating film 52.

4) No heating medium flowing protection function: the water gap of the heater is connected with the water flow switch 8 in series, and the electric heating film 52 can be controlled to be electrified only when the liquid medium flows, so that the electric heating film 52 is ensured to be in a power-off and non-heating state when the heater does not have the liquid medium or the medium does not flow.

5) The water temperature is monitored in real time, and the controller 4 carries out intelligent control; and setting the water temperature control range according to different temperature requirements.

6) The problem of the fuel heater start difficulty under low temperature environment is solved, and this technical scheme can normally start under low temperature environment.

7) Because the electric coating heating is adopted, the noise is very low and almost no noise exists.

It should be noted that, in the description of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no order is shown between the two, and no indication or suggestion of relative importance is understood. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of the subject matter that is disclosed herein is not intended to forego such subject matter, nor should the applicants be construed as having contemplated such subject matter as being part of the disclosed subject matter.

Claims

1. A heater, comprising: a heating main body component, a controller, a first plug-in component and a second plug-in component,

the heating body assembly includes: the heat conduction plate is provided with a first surface and a second surface which are opposite, an electrothermal film is arranged on the first surface, the sealing cover is covered on the second surface, the sealing cover is matched with the heat conduction plate to form a water inlet chamber, a water outlet chamber and a plurality of flow channels for communicating the water inlet chamber and the water outlet chamber, a separation plate for separating the water inlet chamber from the water outlet chamber is arranged in the middle of the second surface,

the first plug-in is used for connecting a first power supply for providing heat source power for the heating main body assembly;

the second plug-in is used for connecting a second power supply for providing an electric signal to the controller;

the controller is electrically connected with the first plug-in unit and the second plug-in unit.

2. The heater of claim 1, wherein said flow channel comprises a plurality of sub-flow channels arranged in parallel, said second surface has a plurality of protrusions formed thereon, said protrusions are used as sidewalls of said sub-flow channels, each of said sub-flow channels has an inlet end connected to said inlet chamber and an outlet end connected to said outlet chamber, said cross section of said sub-flow channels is an open slot with an open end, said plurality of said sub-flow channels arranged in parallel are symmetrically distributed on said heat conducting plate on both sides of said partition plate, and said inlet ends and said outlet ends are located on the same side.

3. The heater of claim 2, wherein a plurality of said sub-flow channels are spaced at equal intervals on said thermally conductive plate.

4. The heater of claim 3, wherein the spacing between adjacent sub-channels is between 10 mm and 13 mm.

5. The heater according to claim 2, wherein the controller is provided with a storage unit in which at least one of the following is stored: the working temperature range of the fluid in the heater and the highest surface temperature of the electric heating film.

6. The heater of claim 5, further comprising: and the temperature sensor is arranged at the outlet end, or the water outlet chamber, or the water outlet and is used for collecting the temperature of the fluid heated by the heating main body component.

7. The heater of claim 5, further comprising: and the overtemperature sensor is electrically connected with the controller, is in contact with the electrothermal film and is used for acquiring the surface temperature of the electrothermal film.

8. The heater of claim 1, further comprising: and the water flow switch is arranged at the flow channel or the upstream or downstream position communicated with the flow channel and used for detecting whether fluid flows.

9. The heater of claim 1, further comprising a housing, wherein the controller is disposed on a side of the heat conducting plate where the electric heating film is disposed, the housing is disposed on a periphery of the controller and the electric heating film and fixedly connected to the heat conducting plate, and the housing is further provided with a first mounting hole for mounting the first plug-in unit and a second mounting hole for mounting the second plug-in unit.

10. The heater of claim 6, wherein said thermally conductive plate has a first region for providing an electrically heated membrane, a second region for forming said inlet chamber, and a third region for forming said outlet chamber, said third region providing an opening for mounting said temperature sensor.