CN219738059U - Surface temperature control system and heating pad comprising same - Google Patents
Surface temperature control system and heating pad comprising same Download PDFInfo
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- CN219738059U CN219738059U CN202321068037.9U CN202321068037U CN219738059U CN 219738059 U CN219738059 U CN 219738059U CN 202321068037 U CN202321068037 U CN 202321068037U CN 219738059 U CN219738059 U CN 219738059U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 68
- 239000000523 sample Substances 0.000 claims abstract description 44
- 238000012544 monitoring process Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 9
- 238000005485 electric heating Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a surface temperature control system and a heating pad comprising the same, wherein the surface temperature control system comprises: temperature probe, thermistor and temperature controller; the plurality of thermistors are connected with the temperature measuring probe to form a monitoring loop; when the thermistor and the temperature measuring probe are of PTC type, the thermistor and the temperature measuring probe are connected in series, and when the thermistor and the temperature measuring probe are of NTC type, the thermistor and the temperature measuring probe are connected in parallel; the monitoring loop is arranged on the heating device and is used for sensing the temperature of the heating device at the position where the temperature measuring probe and the thermistor are arranged; the temperature controller comprises a control unit, a power interface, a signal interface and a load interface, wherein the power interface is used for being connected with an external power supply, the load interface is used for being connected with the heating device, and the signal interface is used for being connected with the monitoring loop. The surface temperature control system has the advantage of higher safety.
Description
Technical Field
The utility model relates to the technical field of plane temperature control, in particular to a plane temperature control system and a heating pad comprising the same.
Background
In the existing heating field of heating pads and other surfaces, a temperature control device basically detects and controls a certain point on a plane by using a temperature measuring probe, so that the whole heating surface is difficult to control the temperature or prevent local heat accumulation; for places beyond the detection point, local excessive temperatures, commonly known as local heat concentration, are likely to be caused due to foreign object coverage or other reasons; the local heat accumulation is extremely easy to cause the problems of deformation, failure, ignition and the like of materials. Accordingly, there is room for improvement in the above-described techniques.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present utility model is to propose a surface temperature control system which has the advantage of higher safety.
The utility model also provides a heating pad comprising the surface temperature control system.
According to an embodiment of the utility model, a surface temperature control system includes: temperature probe, thermistor and temperature controller; the plurality of thermistors are connected with the temperature measuring probe to form a monitoring loop, and when the thermistors and the temperature measuring probe are PTC type, the thermistors and the temperature measuring probe are connected in series; when the thermistor and the temperature measuring probe are NTC, the thermistor and the temperature measuring probe are connected in parallel; the temperature measuring probe is arranged on the heating device and is used for sensing the temperature of the heating device at the positions where the temperature measuring probe and the thermistor are arranged; the temperature controller comprises a control unit, a power interface, a signal interface and a load interface, wherein the power interface is used for connecting an external power supply, the load interface is used for connecting the heating device, the signal interface is used for connecting the monitoring loop, the control unit calculates and judges a received signal, and when the temperature of a signal end is higher than a set temperature, the temperature controller cuts off the power supply of the load interface; and when the temperature of the signal end is not higher than the set temperature, the temperature controller is connected with the power supply of the load interface.
The surface temperature control system has the advantage of higher safety.
According to the surface temperature control system of one embodiment of the utility model, the Curie temperature point of the thermistor is 40-80 ℃.
According to the surface temperature control system of one embodiment of the utility model, the Curie temperature point of the thermistor is 60 ℃.
According to the surface temperature control system of the embodiment of the utility model, when the thermistor is PTC, the lift-drag ratio Rmax1/Rmin1 of the thermistor is a first ratio; wherein Rmax1 represents the highest resistance above the Curie temperature point, and Rmin1 represents the lowest resistance below the Curie temperature point; the first ratio is in the range of 10 4 -10 7 。
According to the surface temperature control system of the embodiment of the utility model, when the thermistor is NTC, the resistance reduction ratio Rmax2/Rmin2 of the thermistor is a second ratio; wherein Rmax2 represents the highest resistance below the Curie temperature point, and Rmin2 represents the lowest resistance above the Curie temperature point; the second ratio is in the range of 10 4 -10 7 。
According to a second aspect of the present utility model, there is provided the face temperature control system according to any one of the first aspects, the heating pad comprising: the surface material layer, the heating layer, the temperature control layer and the heat preservation layer; the heating device is used for forming the heating layer; the monitoring loop is used for forming the temperature control layer.
Further, a plurality of the thermistors are uniformly distributed on the lower side of the heating device.
Further, a plurality of the thermistors are unevenly distributed on the lower side of the heating device.
Further, the heating device is an electric heating wire or an electric heating film.
The heating pad according to the second aspect of the present utility model has the same advantages as the above-mentioned surface temperature control system over the prior art, and will not be described here again.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural view of a surface temperature control system in which a thermistor is PTC according to an embodiment of the present utility model;
fig. 2 is a schematic structural view of a surface temperature control system with a thermistor NTC according to an embodiment of the present utility model;
fig. 3 is a circuit diagram of a surface temperature control system in which a thermistor is PTC, according to an embodiment of the present utility model;
fig. 4 is a circuit diagram of a surface temperature control system in which a thermistor is an NTC according to an embodiment of the present utility model;
fig. 5 is a schematic structural view of a heating mat according to an embodiment of the present utility model.
Reference numerals:
1-a temperature controller; 11-a power interface; 12-signal interface; 13-load interface; 2-a temperature measurement probe; 3-thermistor; 4-a heating device; 41-an electrothermal film; 6-monitoring a loop; 7-load loop; 10-a surface material layer; 20-heating layer; 30-a temperature control layer; 40-heat preservation layer.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
A surface temperature control system according to an embodiment of the present utility model is described below with reference to fig. 1 to 5. As shown in fig. 1 and 2, a surface temperature control system according to an embodiment of the present utility model includes: the temperature measuring probe 2, the thermistor 3 and the temperature controller 1; further, the plurality of thermistors 3 are connected with the temperature measuring probe 2 to form a monitoring loop 6, when the thermistors 3 and the temperature measuring probe 2 are both PTC (Positive Temperature Coefficient positive temperature coefficient thermistors), the thermistors 3 are arranged in series with the temperature measuring probe 2, and when the thermistors 3 and the temperature measuring probe 2 are both NTC (Negative Temperature Coefficient negative temperature coefficient thermistors), the thermistors 3 are arranged in parallel with the temperature measuring probe 2; it should be noted that, the temperature resistance change of the temperature measurement probe 2 according to the embodiment of the present utility model is almost linear, and the temperature resistance change of the thermistor 3 is of a mutant type; that is, when the temperature is lower than the curie temperature point, the resistance change of the thermistor 3 is insignificant; when the temperature is higher than the curie temperature point, the resistance of the thermistor 3 varies significantly with the temperature. Specifically, the temperature controller 1 applies a very low voltage to the temperature measuring probe 2, detects the current passing through the temperature measuring probe 2, calculates a resistance value, and converts the resistance value into a corresponding temperature according to the corresponding resistance value.
In the description of the utility model, a "first feature" or "second feature" may include one or more of such features.
Further, the temperature measuring probe 2 is arranged on the heating device 4 and is used for sensing the temperature of the heating device 4 at the positions where the temperature measuring probe 2 and the thermistor 3 are arranged, so that the heating device 4 can be monitored at all times, and the safety is improved;
further, the temperature controller 1 includes a control unit, a power interface 11, a signal interface 12 and a load interface 13, specifically, the power interface 11 is used for connecting an external power supply, further, the load interface 13 is used for connecting the heating device 4, further, the signal interface 12 is used for connecting the monitoring loop 6, further, the control unit calculates and judges the received signal, and when the temperature of the signal end is higher than the set temperature or the signal end has no signal, the temperature controller 1 cuts off the power supply of the load interface 13; further, when the temperature of the signal end is not higher than the set temperature, the temperature controller 1 is connected with the power supply of the load interface 13.
In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.
The surface temperature control system has the advantage of higher safety.
According to the surface temperature control system of one embodiment of the present utility model, the curie temperature point of the thermistor 3 is 40 ℃ to 80 ℃. Further, in a specific embodiment, the curie temperature point of the thermistor 3 may be 60 ℃.
According to the surface temperature control system of one embodiment of the present utility model, as shown in fig. 3, when the thermistor 3 is PTC type, the lift-to-drag ratio Rmax1/Rmin1 of the thermistor 3 is a first ratio; wherein Rmax1 represents the highest resistance above the Curie temperature point, and Rmin1 represents the lowest resistance below the Curie temperature point; further, the first ratio is in the range of 10 4 -10 7 The method comprises the steps of carrying out a first treatment on the surface of the For example, in one particular embodiment, the first ratio may be 10 5 。
Surface temperature control system according to one embodiment of the utility modelAs shown in fig. 4, when the thermistor 3 is of NTC type, the resistance-reducing ratio Rmax2/Rmin2 of the thermistor 3 is a second ratio; wherein Rmax2 represents the highest resistance below the Curie temperature point, and Rmin2 represents the lowest resistance above the Curie temperature point; further, the second ratio is in the range of 10 4 -10 7 The method comprises the steps of carrying out a first treatment on the surface of the For example, in one particular embodiment, the second ratio may be 10 5 。
According to the surface temperature control system of the embodiment of the utility model, the temperature controller 1 is provided with a wireless connection function, and the external equipment can regulate the temperature controller 1 in a short-range or long-range mode. Specifically, the temperature controller 1 can perform short-range regulation and control in a touch screen or key manner; or can carry out long-range regulation and control through outer end equipment, can enrich the variety of temperature controller 1 regulation and control like this, realize promoting temperature controller 1 intelligent horizontally purpose.
Other configurations, such as wires, etc., and operation of the surface temperature control system according to embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail herein.
In summary, the surface temperature control system has the advantage of higher safety.
According to a second aspect of the present utility model, there is provided a heating pad as in any one of the first aspect, as shown in fig. 5, the heating pad comprising: a surface material layer 10, a heating layer 20, a temperature control layer 30 and an insulation layer 40; further, the heating device 4 is used to form a heating layer 20; further, the monitoring circuit 6 is used to form the temperature control layer 30.
In the description of the present utility model, "plurality" means two or more.
Further, the plurality of thermistors 3 may be uniformly distributed on the lower side of the heating device 4, and further, the plurality of thermistors 3 may be non-uniformly distributed on the lower side of the heating device 4; further, the heating device 4 is an electric heating wire or an electric heating film 41. For example, in one particular embodiment, the heating device 4 may be a heating wire; in another specific embodiment, the heating device 4 may be an electrothermal film 41; further, in a specific embodiment, the plurality of thermistors 3 may be uniformly distributed on the underside of the electrothermal film 41. Further, in another specific embodiment, the plurality of thermistors 3 may be unevenly distributed on the underside of the electrothermal film 41.
In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.
Specifically, the PTC type thermistor 3 is used in combination with a PTC type temperature measuring probe 2, and the temperature measuring probe 2 is connected in series with the thermistor 3 distributed on the lower surface of the electrothermal film 41. Further, when the temperature detected by the temperature measuring probe 2 is lower than the set temperature, the temperature controller 1 is electrified and heated by the program control load circuit 7; when the temperature detected by the temperature measuring probe 2 is higher than the set temperature, the temperature controller 1 is switched off by the program control load circuit 7 to stop heating. Further, when the local temperature is too high and is higher than the curie temperature point of the PTC thermistor 3 due to the local coating of the electrothermal film 41, the resistance of the thermistor 3 increases sharply, and the temperature controller 1 considers that the temperature of the temperature measuring point is too high, and turns off the load circuit 7; when the temperature returns to the normal temperature, the resistance of the thermistor 3 returns to the normal state, and the temperature controller 1 returns to the normal state again. Therefore, the safety of the heating pad can be improved through the surface temperature control system.
Further, the NTC type thermistor 3 is used in combination with the NTC type temperature probe 2, and the temperature probe 2 is connected in parallel with the thermistor 3 distributed on the lower surface of the electrothermal film 41. Further, when the temperature detected by the temperature measuring probe 2 is lower than the set temperature, the temperature controller 1 is electrified and heated by the program control load circuit 7; when the temperature detected by the temperature measuring probe 2 is higher than the set temperature, the temperature controller 1 is switched off by the program control load circuit 7 to stop heating. Further, when the local temperature of the electrothermal film 41 is too high, the resistance of the thermistor 3 in the distribution area is reduced, the temperature controller 1 can consider that the temperature of the temperature measuring point is too high, and the circuit is disconnected; when the temperature returns to the normal temperature, the resistance of the thermistor 3 returns to the normal state, and the temperature controller 1 returns to the normal state again. Therefore, the safety of the heating pad can be improved through the surface temperature control system.
The heating pad according to the second aspect of the present utility model includes, but is not limited to, a heating floor pad, a heating mattress, a heating cushion, a heating table pad, a heating shoulder and neck pad, and a heating waist pad.
In summary, the heating pad according to the second aspect of the present utility model has the advantage of higher safety.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A surface temperature control system, comprising: temperature probe, thermistor and temperature controller; the plurality of thermistors are connected with the temperature measuring probe to form a monitoring loop; when the thermistor and the temperature measuring probe are both PTC type, the thermistor and the temperature measuring probe are connected in series; when the thermistor and the temperature measuring probe are NTC, the thermistor and the temperature measuring probe are connected in parallel; the temperature measuring probe is arranged on the heating device and is used for sensing the temperature of the heating device at the positions where the temperature measuring probe and the thermistor are arranged; the temperature controller comprises a control unit, a power interface, a signal interface and a load interface, wherein the power interface is used for connecting an external power supply, the load interface is used for connecting the heating device, the signal interface is used for connecting the monitoring loop, the control unit calculates and judges a received signal, and when the temperature of a signal end is higher than a set temperature, the temperature controller cuts off the power supply of the load interface; and when the temperature of the signal end is not higher than the set temperature, the temperature controller is connected with the power supply of the load interface.
2. The face temperature control system of claim 1, wherein the thermistor has a curie temperature point of 40 ℃ to 80 ℃.
3. The face temperature control system of claim 2, wherein the thermistor has a curie temperature point of 60 ℃.
4. The surface temperature control system according to claim 2, wherein when the thermistor is of PTC type, a lift-to-drag ratio Rmax1/Rmin1 of the thermistor is a first ratio; wherein Rmax1 represents the highest resistance above the Curie temperature point, and Rmin1 represents the lowest resistance below the Curie temperature point; the first ratio is in the range of 10 4 -10 7 。
5. The surface temperature control system according to claim 2, wherein when the thermistor is of NTC type, a resistance-reduction ratio Rmax2/Rmin2 of the thermistor is a second ratio; wherein Rmax2 represents the highest resistance below the Curie temperature point, and Rmin2 represents the lowest resistance above the Curie temperature point; the second ratio is in the range of 10 4 -10 7 。
6. A heating mat, comprising: the face temperature control system of any one of claims 1-5, the heating mat further comprising: the surface material layer, the heating layer, the temperature control layer and the heat preservation layer; the heating device is used for forming the heating layer; the monitoring loop is used for forming the temperature control layer.
7. The heating pad of claim 6, wherein a plurality of said thermistors are evenly distributed on the underside of said heating means.
8. The heating pad of claim 6, wherein a plurality of said thermistors are unevenly distributed on an underside of said heating means.
9. The heating pad of claim 6, wherein the heating means is a heating wire or a heating film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321068037.9U CN219738059U (en) | 2023-05-06 | 2023-05-06 | Surface temperature control system and heating pad comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321068037.9U CN219738059U (en) | 2023-05-06 | 2023-05-06 | Surface temperature control system and heating pad comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219738059U true CN219738059U (en) | 2023-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321068037.9U Active CN219738059U (en) | 2023-05-06 | 2023-05-06 | Surface temperature control system and heating pad comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219738059U (en) |
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2023
- 2023-05-06 CN CN202321068037.9U patent/CN219738059U/en active Active
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