CN111780401B - Multi-power heater accuse temperature prevents dry combustion method system - Google Patents
Multi-power heater accuse temperature prevents dry combustion method system Download PDFInfo
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- CN111780401B CN111780401B CN202010580310.0A CN202010580310A CN111780401B CN 111780401 B CN111780401 B CN 111780401B CN 202010580310 A CN202010580310 A CN 202010580310A CN 111780401 B CN111780401 B CN 111780401B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/142—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using electric energy supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/12—Arrangements for connecting heaters to circulation pipes
- F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
- F24H9/139—Continuous flow heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2028—Continuous-flow heaters
Abstract
The invention discloses a multi-power heater temperature control dry burning prevention system, which comprises a multi-power heater dry burning prevention device, a flow guide device, a temperature control device for controlling the temperature of outlet fluid and an over-temperature protection device for preventing dry burning, wherein the multi-power heater dry burning prevention device consists of a carrier, a heating circuit, a temperature sensing element and a temperature control sub-circuit, the heating circuit, the temperature sensing element and the temperature control sub-circuit are arranged on the carrier, the flow guide device is arranged in a fluid flow channel cavity used for the passing of the fluid to be heated in the carrier, a confluence duct for realizing the flow concentration and passing of the fluid to be heated is arranged on the flow guide device, and the temperature sensing element is arranged on the outer wall of the carrier opposite to the fluid outlet of the confluence duct. According to the invention, each heating sub-circuit far away from the temperature sensing element is led out of the heating circuit, namely the temperature control sub-circuit, connected with the heating sub-circuit in parallel to the vicinity of the area where the temperature sensing element is located, so that the dry burning prevention effect can be effectively achieved through a single temperature sensing element.
Description
Technical Field
The invention belongs to the technical field of temperature control and dry burning prevention devices of heaters for heating household appliances and other liquids, and particularly relates to a temperature control and dry burning prevention system of a multi-power heater.
Background
With the rapid development of the thick film heating technology, the thick film heating technology is more mature, products are more abundant, the application scenes are more extensive, and the technical problems of the thick film heating products are more and more. For example, thick film heating circuits have the advantages of fast temperature rise and energy saving, but these advantages are sometimes also disadvantages, for example, the fast temperature rise can cause serious loss in a short time when the dry burning phenomenon occurs. Therefore, accurate and strict control of the temperature of the product and its vicinity is required in thick film heating products. Therefore, in the prior art, thick film heating products are provided with two temperature sensing elements, one temperature sensing element is used for measuring the temperature of a thick film heating circuit and a carrier thereof, and is convenient for controlling dry burning prevention, and the other temperature sensing element is used for measuring the temperature of water and is used for controlling heating power or liquid flow rate. The design of the two temperature sensing elements not only increases the direct cost, but also doubles the indirect cost due to the complex structure matched with the two temperature sensing elements.
Disclosure of Invention
The invention solves the technical problem of providing a multi-power heater temperature control dry-burning prevention system which has reasonable structural design, safe and convenient use and lower cost.
The invention adopts the following technical scheme for solving the technical problems, and discloses a multi-power heater temperature-control dry-burning prevention system which is characterized by comprising a multi-power heater dry-burning prevention device, a flow guide device, a temperature control device for controlling the temperature of outlet fluid and an over-temperature protection device for preventing dry burning, wherein the multi-power heater dry-burning prevention device comprises a carrier, a heating circuit, a temperature sensing element and a temperature control sub-circuit, the heating circuit, the temperature sensing element and the temperature control sub-circuit are arranged on the carrier, the carrier is used for bearing the heating circuit and transmitting heat generated by the heating circuit to fluid to be heated in the carrier, the heating circuit comprises a plurality of sections of heating sub-circuits which are distributed in different areas of the carrier and are mutually independent and connected in parallel, the plurality of sections of heating sub-circuits are respectively connected in parallel with the control sub-circuits and the temperature control sub-circuits are distributed on the carrier adjacent temperature sensing elements, the flow guide device is arranged in a fluid flow passage cavity for the fluid to be heated to pass through in the carrier, the temperature sensing element is arranged on the outer wall of the carrier opposite to the fluid outlet of the confluence duct and is used for acquiring the temperature data of the fluid to be heated in the carrier so as to realize temperature control through the temperature control device and prevent dry burning through the overtemperature protection device.
Further, the temperature control sub-circuits penetrate through the areas where the temperature sensing elements are located and are respectively connected with the corresponding heating sub-circuits in parallel, and the areas where the temperature sensing elements are located are not more than 30mm away from the edges of the temperature sensing elements in a straight line.
Further, the heating sub-circuits far away from the temperature sensing elements in the heating sub-circuits are respectively connected with the temperature control sub-circuits in parallel, and the control sub-circuits are all distributed on the carriers near the temperature sensing elements.
The carrier is composed of a metal base body and an insulating layer arranged on the metal base body or composed of a nonmetal base body, the heating circuit, the temperature sensing element and the temperature control sub-circuit are all arranged on the carrier, the heating circuit is composed of a plurality of sections of thick film heating sub-circuits with different powers, one end of each section of thick film heating sub-circuit with different powers is electrically connected with a power supply welding point arranged on the carrier, the other end of each section of thick film heating sub-circuit with different powers is electrically connected with another power supply welding point arranged on the insulating layer, and two ends of the temperature sensing element are electrically connected with a positive electrode welding point and a negative electrode welding point arranged on the insulating layer respectively.
Further limiting, the diversion device is embedded and fixed in a fluid flow passage cavity which is arranged at one side of a carrier water outlet and used for the passing of the fluid to be heated, the diversion device comprises a columnar body which is matched with the fluid flow passage cavity which is arranged in the carrier and used for the passing of the fluid to be heated, a liquid outlet cavity and a confluence duct which are communicated up and down are arranged in the columnar body, an annular channel is arranged outside the confluence duct, a fluid outlet of the confluence duct is communicated with the liquid outlet cavity, a fluid outlet of the confluence duct is opposite to the inner wall of the carrier, a fluid inlet of the confluence duct is communicated with the annular channel, an axial diversion channel which is communicated with the fluid flow passage cavity which is arranged in the carrier and used for the passing of the fluid to be heated and the annular channel is arranged on a baffle plate at the bottom of the annular channel and far away from the fluid inlet of the confluence duct, the diversion channel is used for converging the fluid to be heated to the confluence duct through the diversion device and is discharged through the liquid outlet cavity, and the temperature measurement of the fluid to be heated in the carrier is realized through a temperature sensing element on the outer wall of the carrier opposite to the fluid outlet of the confluence duct, and finally, acquiring temperature data of the fluid to be heated in the carrier so as to realize temperature control through a temperature control device and prevent dry burning through an over-temperature protection device.
Compared with the prior art, the invention has the following beneficial effects: the invention reduces two temperature sensing elements in the prior art to one temperature sensing element through an optimized structure, thereby realizing the original function and saving the production cost. The multi-power thick film heating circuit is generally composed of a plurality of sections of heating sub-circuits, the multi-power thick film heating circuit is unevenly distributed on a carrier, when dry burning occurs, different power modes have different influences on the temperature of the temperature sensing element area, and each heating sub-circuit far away from the temperature sensing element is led out to the position near the area where the temperature sensing element is located, namely, a temperature control sub-circuit which is connected with the heating sub-circuit in parallel, so that the dry burning prevention effect can be effectively achieved through a single temperature sensing element. The temperature of the fluid to be heated in the carrier is measured by the temperature sensing element on the outer wall of the carrier opposite to the fluid outlet of the confluence duct through the flow guide device, and the temperature data of the fluid to be heated in the carrier is finally acquired so as to realize temperature control through the temperature control device and prevent dry burning through the over-temperature protection device.
Drawings
FIG. 1 is a schematic structural diagram of an anti-dry heating device of a multi-power heater according to the present invention;
FIG. 2 is a schematic structural diagram of an anti-dry heating device of the multi-power heater of the present invention;
FIG. 3 is a schematic view of the structure of the deflector of the present invention;
FIG. 4 is a schematic view of the structure of the deflector of the present invention;
fig. 5 is a schematic structural view of the deflector of the present invention.
In the figure: 1-carrier, 101-stainless steel tubular metal substrate, 102-insulating layer, 2-heating circuit, 3-temperature sensing element, 4-temperature control electronic circuit, 5-power supply welding point, 6-another power supply welding point, 7-positive and negative electrode welding points, 8-flow guiding device, 801-columnar body, 802-liquid outlet cavity, 803-confluence duct, 804-annular channel and 805-axial flow guiding groove.
Detailed Description
The technical scheme of the invention is described in detail with reference to the accompanying drawings. A multi-power heater temperature control dry burning prevention system comprises a multi-power heater dry burning prevention device, a flow guide device 8, a temperature control device for controlling the temperature of outlet fluid and an over-temperature protection device for preventing dry burning, wherein the multi-power heater dry burning prevention device is composed of a carrier 1, a heating circuit 2, a temperature sensing element 3 and a temperature control sub-circuit 4, the heating circuit 2 is arranged on the carrier 1, the carrier 1 is used for bearing the heating circuit 2 and transferring heat generated by the heating circuit 2 to fluid to be heated in the carrier 1, the heating circuit 2 is composed of a plurality of sections of heating sub-circuits which are distributed in different areas of the carrier 1 and mutually independent and connected in parallel, the plurality of sections of heating sub-circuits are respectively connected in parallel with a control sub-circuit 4, the temperature control sub-circuits 4 are uniformly distributed on the carrier 1 adjacent to the temperature sensing element 3, the flow guide device 8 is arranged in a fluid flow passage cavity for, the flow guiding device 8 is provided with a confluence duct 803 for realizing the flow concentration and passing of the fluid to be heated, and the temperature sensing element 3 is arranged on the outer wall of the carrier 1 opposite to the fluid outlet of the confluence duct 803 and is used for acquiring the temperature data of the fluid to be heated in the carrier 1 so as to realize the temperature control through a temperature control device and prevent the dry burning through a short circuit protection device.
The temperature control subcircuits 4 of the invention penetrate through the areas where the temperature sensing elements 3 are located and are respectively connected with the corresponding heating subcircuits in parallel, and the areas where the temperature sensing elements 3 are located are not more than 30mm away from the edge of the temperature sensing elements 3.
In the heating subcircuits, the heating subcircuits far away from the temperature-sensing element 3 are respectively connected with the temperature-control subcircuits 4 in parallel, and the control subcircuits 4 are distributed on the carrier near the temperature-sensing element 3.
The carrier 1 of the invention is composed of a stainless steel tubular metal substrate 101 and an insulating layer 102 arranged on the stainless steel tubular metal substrate 101, a heating circuit 2, a temperature sensing element 3 and a temperature control sub-circuit 4 are all arranged on the insulating layer 102, the heating circuit 2 is composed of a plurality of sections of thick film heating sub-circuits with different powers, one end of each section of thick film heating sub-circuit with different powers is electrically connected with a power supply welding point 5 arranged on the insulating layer 102, the other end of each section of thick film heating sub-circuit with different powers is respectively electrically connected with another power supply welding point 6 arranged on the insulating layer 102, and the two ends of the temperature sensing element 3 are respectively electrically connected with a positive electrode welding point 7 and a negative electrode welding point 7 arranged on the insulating layer 102.
The invention relates to a flow guide device 8 which is embedded and fixed in a fluid flow passage cavity at one side of a water outlet of a carrier 1 and used for passing a fluid to be heated, wherein the flow guide device 8 comprises a columnar body 801 matched with the fluid flow passage cavity used for passing the fluid to be heated in the carrier 1, a liquid outlet cavity 802 and a confluence duct 803 which are vertically communicated are arranged in the columnar body 801, an annular channel 804 is arranged outside the confluence duct 803, a fluid outlet of the confluence duct 803 is communicated with the liquid outlet cavity 802, a fluid outlet of the confluence duct 803 is opposite to the inner wall of the carrier 1, a fluid inlet of the confluence duct 803 is communicated with the annular channel 804, an axial flow guide channel 805 communicated with the fluid flow passage cavity used for passing the fluid to be heated in the carrier 1 and the annular channel 804 is arranged on a baffle plate at the bottom of the annular channel 804 and far away from the fluid inlet of the confluence duct 803, and is used for converging the fluid to be heated to the confluence duct 803 through the flow guide device 8 and then to be discharged through the liquid outlet cavity 801, and then the temperature of the fluid to be heated in the carrier 1 is measured by the temperature sensing element 3 on the outer wall of the carrier 1 opposite to the outlet of the confluence ducted fluid 803, and finally the temperature data of the fluid to be heated in the carrier 1 is obtained so as to realize temperature control by the temperature control device and prevent the dry burning phenomenon by the overtemperature protection device.
The invention reduces two temperature sensing elements in the prior art to one temperature sensing element through an optimized structure, thereby realizing the original function and saving the production cost. The multi-power thick film heating circuit is generally composed of a plurality of sections of heating sub-circuits, the multi-power thick film heating circuit is unevenly distributed on a carrier, when dry burning occurs, different power modes have different influences on the temperature of the temperature sensing element area, and each heating sub-circuit far away from the temperature sensing element is led out to the position near the area where the temperature sensing element is located, namely, a temperature control sub-circuit which is connected with the heating sub-circuit in parallel, so that the dry burning prevention effect can be effectively achieved through a single temperature sensing element. The temperature of the fluid to be heated in the carrier is measured by the temperature sensing element on the outer wall of the carrier opposite to the fluid outlet of the confluence duct through the flow guide device, and the temperature data of the fluid to be heated in the carrier is finally acquired so as to realize temperature control through the temperature control device and prevent dry burning through the over-temperature protection device.
While there have been shown and described what are at present considered the fundamental principles of the invention, its essential features and advantages, the invention further resides in various changes and modifications which fall within the scope of the invention as claimed.
Claims (4)
1. A multi-power heater temperature control dry burning prevention system is characterized by comprising a multi-power heater dry burning prevention device, a flow guide device, a temperature control device for controlling the temperature of outlet fluid and an over-temperature protection device for preventing dry burning, wherein the multi-power heater dry burning prevention device comprises a carrier, a heating circuit, a temperature sensing element and a temperature control sub-circuit, the heating circuit, the temperature sensing element and the temperature control sub-circuit are arranged on the carrier, the carrier is used for bearing the heating circuit and transmitting heat generated by the heating circuit to fluid to be heated in the carrier, the heating circuit is composed of a plurality of sections of heating sub-circuits which are distributed in different areas of the carrier and are mutually independent and connected in parallel, the plurality of sections of heating sub-circuits are respectively connected in parallel with the temperature control sub-circuit, the temperature control sub-circuits are respectively distributed on the carrier adjacent temperature sensing element, the flow guide device is embedded and fixed in a fluid flow passage cavity at one side of a water outlet of the carrier and used for the fluid to be heated to pass through, the flow guiding device comprises a columnar body matched with a liquid flow channel cavity used for a to-be-heated fluid to pass through in a carrier, a liquid outlet cavity and a confluence duct which are communicated up and down are arranged in the columnar body, an annular channel is arranged outside the confluence duct, a fluid outlet of the confluence duct is communicated with the liquid outlet cavity, a fluid outlet of the confluence duct is opposite to the inner wall of the carrier, a fluid inlet of the confluence duct is communicated with the annular channel, an axial flow guiding channel communicated with the fluid flow channel cavity and the annular channel for the to-be-heated fluid to pass through in the carrier is arranged on a baffle plate at the bottom of the annular channel and far away from the fluid inlet of the confluence duct, the axial flow guiding channel is used for converging the to-be-heated fluid to the confluence duct through the flow guiding device and discharging the to-be-heated fluid through the liquid outlet cavity through the confluence duct, temperature measurement of the to-be-heated fluid in the carrier is realized through a temperature sensing element on the outer wall of the carrier opposite to the fluid outlet of the confluence duct, and temperature control of the to-be-heated fluid in the carrier is finally obtained so as to realize temperature control through a temperature control device and prevention of drying through an overtemperature protection device A burning phenomenon occurs.
2. The multi-power heater temperature-control dry-heating prevention system of claim 1, wherein: the temperature control sub-circuits penetrate through the areas where the temperature sensing elements are located and are respectively connected with the corresponding heating sub-circuits in parallel, and the areas where the temperature sensing elements are located are not more than 30mm away from the edges of the temperature sensing elements in a straight line.
3. The multi-power heater temperature-control dry-heating prevention system of claim 1, wherein: the heating sub-circuits far away from the temperature sensing elements in the heating sub-circuits are respectively connected with temperature control sub-circuits in parallel, and the temperature control sub-circuits are all distributed on the carriers near the temperature sensing elements.
4. The multi-power heater temperature-control dry-heating prevention system of claim 1, wherein: the carrier is composed of a metal base body and an insulating layer arranged on the metal base body or composed of a nonmetal base body, the heating circuit, the temperature sensing element and the temperature control sub-circuit are all arranged on the carrier, the heating circuit is composed of a plurality of sections of thick film heating sub-circuits with different powers, one end of each thick film heating sub-circuit with different powers is electrically connected with a power supply welding point arranged on the carrier, the other end of each thick film heating sub-circuit with different powers is electrically connected with another power supply welding point arranged on the carrier, and two ends of the temperature sensing element are electrically connected with a positive electrode welding point and a negative electrode welding point arranged on the insulating layer respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010580310.0A CN111780401B (en) | 2020-06-23 | 2020-06-23 | Multi-power heater accuse temperature prevents dry combustion method system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010580310.0A CN111780401B (en) | 2020-06-23 | 2020-06-23 | Multi-power heater accuse temperature prevents dry combustion method system |
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| Publication Number | Publication Date |
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| CN111780401A CN111780401A (en) | 2020-10-16 |
| CN111780401B true CN111780401B (en) | 2021-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010580310.0A Active CN111780401B (en) | 2020-06-23 | 2020-06-23 | Multi-power heater accuse temperature prevents dry combustion method system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1501749A (en) * | 1997-07-11 | 2004-06-02 | 斯特里克斯有限公司 | Liquid heating vessels and thick film heater |
| WO2011158028A2 (en) * | 2010-06-15 | 2011-12-22 | Otter Controls Limited | Thick film heaters |
| CN102785355A (en) * | 2012-08-16 | 2012-11-21 | 方亮生 | Energy-saving heating device for suction molding machine |
| CN103974472A (en) * | 2013-02-01 | 2014-08-06 | 研祥智能科技股份有限公司 | Heating film and heating device |
| CN105258352A (en) * | 2015-10-30 | 2016-01-20 | 北京四季沐歌太阳能技术集团有限公司 | Heating protection system of water purifier |
| CN208462083U (en) * | 2018-06-29 | 2019-02-01 | 曾杜明 | A kind of heating element with thermometric |
| CN208779707U (en) * | 2018-04-20 | 2019-04-23 | 厦门瑞尔特卫浴科技股份有限公司 | A kind of mixed water-bound of heating device |
-
2020
- 2020-06-23 CN CN202010580310.0A patent/CN111780401B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1501749A (en) * | 1997-07-11 | 2004-06-02 | 斯特里克斯有限公司 | Liquid heating vessels and thick film heater |
| WO2011158028A2 (en) * | 2010-06-15 | 2011-12-22 | Otter Controls Limited | Thick film heaters |
| CN102785355A (en) * | 2012-08-16 | 2012-11-21 | 方亮生 | Energy-saving heating device for suction molding machine |
| CN103974472A (en) * | 2013-02-01 | 2014-08-06 | 研祥智能科技股份有限公司 | Heating film and heating device |
| CN105258352A (en) * | 2015-10-30 | 2016-01-20 | 北京四季沐歌太阳能技术集团有限公司 | Heating protection system of water purifier |
| CN208779707U (en) * | 2018-04-20 | 2019-04-23 | 厦门瑞尔特卫浴科技股份有限公司 | A kind of mixed water-bound of heating device |
| CN208462083U (en) * | 2018-06-29 | 2019-02-01 | 曾杜明 | A kind of heating element with thermometric |
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| CN111780401A (en) | 2020-10-16 |
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