CN203481790U - Device capable of preventing over high temperature of power line and electric appliance using the same - Google Patents
Device capable of preventing over high temperature of power line and electric appliance using the same Download PDFInfo
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- CN203481790U CN203481790U CN201320171367.0U CN201320171367U CN203481790U CN 203481790 U CN203481790 U CN 203481790U CN 201320171367 U CN201320171367 U CN 201320171367U CN 203481790 U CN203481790 U CN 203481790U
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- power line
- temperature
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- electrical equipment
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Abstract
The utility model relates to a device capable of preventing over high temperature of a power line, and an electric appliance using the same. One end of the power line is connected with a power supply, and the other end is connected with the electric appliance. The device comprises a detection element for detecting the temperature of the power line, a control element connected with the detection element and used for receiving the signal from the detection element, and a switch element connected with the control element and used for controlling the switching of a working element resulting into over high temperature of the power line. The device solves the problem of the prior art that the temperature of the power line is over high due to long-period working state of the power line, and when the temperature of the power line is over high, it is only necessary to cut off the main working elements resulting into heating of the power line. In the device, the signal of the detection element is directly transmitted to the control element of the load, the cost is reduced, and linkage control is easy to perform.
Description
Technical field
The utility model relates to the device that prevents power line excess Temperature, especially a kind of electrical equipment that prevents the device of power line excess Temperature and apply this device.
Background technology
Existing electrical equipment power line major part used is with plug, what have directly passes through and the mode crimping such as screw for switch, the effect of line body is exactly for connecting power supply, the diameter of line body is selected according to the size of load, the material of wire own is generally copper cash, aluminum steel etc., because wire itself also has resistance, therefore when continuing to have electric current to pass through, wire itself can generate heat, heat is dispersed in air by the insulating barrier of line surface, but the speed of distributing is received ambient temperature, whether air flows, the factor impacts such as area of dissipation, heat can be accumulated, after being accumulated to a certain degree, there will be the appreciable heating of obvious human body, the problems such as ignition, particularly when wire diameter and load are not mated, initiation fire even.
Existing electrical equipment, if water heater is all with temperature control component, but this temperature control component is mainly used to control the water temperature in inner bag, to the temperature of external power cord, cannot realize control, once and user selected after heating power, water heater can be heated to design temperature according to this power.
Producer considers from cost and versatility degree, multiple power all adopts same power line, the electric current that some power is corresponding passes through the limiting value scope edge of electric current at this power line, work calories accumulation is very fast for a long time, power line for a long time under same power work calories also easily cause accumulation, nowadays cannot carry out temperature measurement and control to the power line of fuselage outside.
Application number is that 200920279799.7 Chinese patent discloses a kind of overheating protection circuit and applied the power supply change-over device of this overheating protection circuit.Overheating protection circuit comprises sensible heat assembly, switch and control unit.The temperature of sensible heat assembly sensing power line, and switch is to be connected with power line.When temperature is greater than default value, control unit control switch is cut off the electricity supply.The disclosed overheating protection circuit of the utility model and apply the power supply change-over device of this overheating protection circuit can cut off the electricity supply in time to prevent that electric wire from cocking off and reminding user in real time in response to processing when power line temperature overheating.
But use above-mentioned use overheating protection circuit and apply the power supply change-over device of this overheating protection circuit; when sensible heat component detection arrives power line excess Temperature; control unit just control switch is closed power line; the load being connected with power line is like this just completely in non operating state; some display units or other small-power elements are also de-energized, and just power line have been controlled after disconnection does not relate to disconnection to how to control closure in above-mentioned utility model.
Given this utility model is proposed.
Utility model content
The purpose of this utility model, for overcoming the deficiencies in the prior art, provides a kind of device that prevents power line excess Temperature, and this device causes the operation element of power line heating only cut off electrical equipment when power line excess Temperature in.
In order to realize this object, the utility model adopts following technical scheme:
A kind of device that prevents power line excess Temperature, wherein, power line one end connects power supply, other end connecting circuit, this device comprises the first detecting element for detection of power line temperature, the switch element opening and closing with the operation element that causes power line excess Temperature for controlling being connected with control element for receiving the control element of the first detecting element signal being connected with the first detecting element.
Described power line is provided with at least one temperature sensing point, and described temperature sensing point is arranged on the inside of the insulating barrier of power line, corresponding with the first detecting element.
The first described detecting element is arranged on the interstitial site of the stranded conductor of power line.
Described control element is arranged on electrical equipment inside, is electrically connected to the first detecting element, and the signal sending according to the first detecting element of receiving judges the switching of control switch element.
Described control element is also connected with second detecting element for detection of electrical work state of electrical equipment inside.
Described switch element is relay or circuit breaker, is arranged on electrical equipment inside, is electrically connected to control element, by control element, controls break-make.
The first described detecting element is thermistor or temperature sensor.
An electrical equipment with the above-mentioned device that prevents power line excess Temperature, described electrical equipment is electric heater, refrigerator, air-conditioning, electric heating, electric rice cooker, electromagnetic oven, roaster or electric pressure cooker.
Described electrical equipment inside has and causes the high-power components of power line excess Temperature, the switch element of its switching of control being connected with high-power components, the control element of control switch element and for detection of electrical work state, to control element, transmit the second detecting element of signal, in the power line of described electrical equipment, be provided with the first detecting element that at least one detects power line temperature, described the first detecting element is connected with described control element.
Adopt after technical scheme described in the utility model, bring following beneficial effect:
1, the detecting elements such as thermistor or temperature sensor are set on power line, can immediately detect the temperature of power line, and by the working condition of control element control load, prevent the excess Temperature of power line, avoid causing fire because of excess Temperature.
2, the temperature sensor on power line is connected with the control element of load inside, control load inside causes the working condition of the groundwork element of power line heating, be not directly to cut off the electricity supply whole load is quit work completely, some display elements of load inside, alarm element and other small-power elements can also be in running order like this.
3, preventing that the signal of detecting element in the device of power line excess Temperature from directly passing to the control element of load, is not that independent control element is set, and can save cost like this, and easily realize interlock and control.
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Accompanying drawing explanation
Fig. 1: a kind of device and the water heater structure figure with this device that prevents power line excess Temperature of the utility model
Fig. 2: the structural representation that the utlity model has a kind of power line of the device that prevents power line excess Temperature
The section amplification figure of Fig. 3: Fig. 2
Fig. 4: the structural representation in the another embodiment of the utility model with a kind of power line of the device that prevents power line excess Temperature.
Embodiment
A kind of device that prevents power line excess Temperature described in the utility model, wherein, power line 2 one end connect power supply, other end connecting circuit, this device comprises the first detecting element 6 for detection of power line 2 temperature, the switch element 3 opening and closing with the operation element that causes power line excess Temperature for controlling being connected with control element 4 for receiving the control element 4 of the first detecting element 6 signals being connected with the first detecting element 6.
Described power line is provided with at least one temperature sensing point 12, and described temperature sensing point 12 is arranged on the inside of the insulating barrier 13 of power line, corresponding with the first detecting element 6, at a plurality of temperature sensings, puts the temperature that diverse location on power line 2 is detected respectively at 12 places.The first described detecting element 6 is arranged on the interstitial site of the stranded conductor of power line 2, because the temperature at stranded conductor interstitial site place is high, may have hidden danger on fire.The first described detecting element 6 is thermistor or temperature sensor, the temperature inversion of the power line detecting can be become to the signal of telecommunication or other signals needing.
Described thermistor is by the element that the highstrung semiconductive ceramic matter of temperature working body is formed.Compare with general conventional metallic resistance, it has much bigger temperature coefficient of resistance value.By thermistor detected temperatures, there is the advantages such as materials are economized, cost is low, volume is little, can easy variation of measuring delicately small temperature, also available temperature-sensitive resistance detection temperature in the utility model, when temperature is different, thermistor is passed to the resistance difference of control element 4, when the excess Temperature of power line, a resistance of corresponding thermistor, control element 4 can corresponding control switch element 3.
Described control element 4 is arranged on electrical equipment inside, is electrically connected to the first detecting element 6, receives the signal that the first detecting element 6 sends, the switching that judges and send Signal-controlled switch element 3 to switch element 3 according to the signal of receiving.Described control element 4 is also connected with second detecting element 7 for detection of electrical equipment internal temperature of electrical equipment inside.Detect the temperature whether inner water temperature reaches setting.
Described switch element 3 is relay or circuit breaker, for causing the working condition of the groundwork element of power line heating in control apparatus, described switch element 3 operated by rotary motion are inner at electrical equipment, be electrically connected to control element 4, the signal that reception control element 4 sends is also made corresponding action according to signal: open or close.
The above-mentioned device that prevents power line excess Temperature is applicable in multiple electrical equipment, and described electrical equipment can be electric heater, refrigerator, air-conditioning, electric heating, electric rice cooker, electromagnetic oven, roaster or electric pressure cooker.
Described electrical equipment inside has and causes the high-power components of power line excess Temperature, the switch element 3 of its switching of control being connected with high-power components, the control element 4 of control switch element 3 and for detection of electrical work temperature, to control element 4, transmit the second detecting element 7 of signals, in the power line 2 of described electrical equipment, be provided with the first detecting element 6 that at least one detects power line temperature, described the first detecting element 6 is connected with described control element 4.
The water temperature that described electrical work temperature is electric heater, the temperature of refrigerator inside, the temperature at air-conditioner air outlet place, the temperature of the heater block of electric heating, and the temperature of electric rice cooker, electromagnetic oven, roaster or electric pressure cooker inside.
Above-mentioned circuit breaker function also can realize by relay, the switching of control element 4 control relays, the working condition of Control heating element.
Embodiment mono-
As shown in Figure 1, electric heater inside is provided with heating element 5, the circuit breaker of the control heating element 5 being connected with heating element 5, control the control element 4 of circuit breaker and for detection of water temperature, to control element 4, transmit the second detecting element 7 of signal, during water heater working, inner 5 pairs of water of heating element heat, inner 7 pairs of water temperatures of the second detecting element are monitored, when water temperature reaches the temperature of setting, the second detecting element 7 sends signal and sends control element 4 to, the signal that control element 4 is converted to the disconnection of control circuit breaker by the signal of the second detecting element 7 is passed to circuit breaker, circuit breaker disconnects, heating element 5 in breaker control water heater, after circuit breaker disconnects, heating element 5 power-off stop water heating.
The temperature of 12 pairs of power lines 2 of a plurality of temperature sensing points of the temperature sensor of power line 2 inside is monitored, by temperature transition, be that the signal of telecommunication or other forms of signal are passed to the control element 4 being connected with temperature sensor, control element 4 judges and sends the signal of controlling its switching to circuit breaker according to signal, when the excess Temperature of power line 2 is during as 50 ℃, temperature sensor sends signal and sends control element 4 to, the signal that control element 4 is converted to the disconnection of control circuit breaker by the signal of temperature sensor is passed to circuit breaker, circuit breaker disconnects, heating element 5 in breaker control water heater, after circuit breaker disconnects, heating element 5 power-off stop water heating, temperature sensor continues the temperature of power line 2 to monitor, after temperature decline uniform temperature or power-off certain hour, heating element 5 is reworked.The present embodiment excessive temperature is not what fix, according to power line, for different electrical equipment, sets.
Embodiment bis-
As Fig. 2, shown in Fig. 3, for the power line 2 with plug, one end of power line 2 is that plug 8 can connect power supply by socket 1, other end connecting circuit, power line 2 is comprised of the insulating barrier 13 of outside and inner wire, general wire comprises wire 1, wire 2 10 and wire 3 11, be respectively ground wire, zero line and live wire, in the insulating barrier 13 of power line 2, be provided with a plurality of temperature sensing points 12, a plurality of temperature sensing points 12 are distributed in the diverse location of power line, a plurality of temperature sensing points 12 go out corresponding temperature transducer, monitor respectively the temperature at the diverse location place of power line 2.
Embodiment tri-
As shown in Figure 4, for not with the power line 2 of plug, one end of power line 2 directly connects power supply, other end connecting circuit, power line is comprised of the insulating barrier 13 of outside and inner wire, general wire comprises wire 1, wire 2 10 and wire 3 11, be respectively ground wire, zero line and live wire, in the insulating barrier 13 of power line 2, be provided with a plurality of temperature sensing points 12, a plurality of temperature sensing points 12 are distributed in the diverse location of power line, a plurality of temperature sensing points 12 go out corresponding temperature transducer, monitor respectively the temperature at the diverse location place of power line 2.
Embodiment tetra-
The device that prevents power line excess Temperature described in above-described embodiment can also be applied on the long-time use such as refrigerator, air-conditioning and/or high power electrical equipment, the first detecting element is set on power line monitors the temperature of power line, detecting element connects control element, control element connecting valve element, switch element is controlled the working condition of groundwork element in refrigerator or air-conditioning, as control compressor and quit work, the display element of refrigerator or air-conditioning, reminding alarm element or other small-power elements still can be in running order.
The foregoing is only preferred implementation of the present utility model; it should be pointed out that for the ordinary skill in the art, do not departing under the utility model principle prerequisite; can also make various deformation and improvement, this also should be considered as protection range of the present utility model.
Claims (8)
1. a device that prevents power line excess Temperature, wherein, power line (2) one end connects power supply, other end connecting circuit, is characterized in that: this device comprises the first detecting element (6) for detection of power line temperature, the switch element (3) opening and closing with the operation element that causes power line excess Temperature for controlling being connected with control element (4) for receiving the control element (4) of the first detecting element (6) signal being connected with the first detecting element (6).
2. the device that prevents power line excess Temperature according to claim 1, it is characterized in that: described power line is provided with at least one temperature sensing point (12), described temperature sensing point (12) is arranged on the inside of the insulating barrier (13) of power line, corresponding with the first detecting element (6).
3. the device that prevents power line excess Temperature according to claim 1 and 2, is characterized in that: described the first detecting element (6) is arranged on the interstitial site of the stranded conductor of power line (2).
4. the device that prevents power line excess Temperature according to claim 1, it is characterized in that: described control element (4) is arranged on electrical equipment inside, be electrically connected to the switching of the Signal-controlled switch element (3) sending according to the first detecting element (6) of receiving with the first detecting element (6).
5. the device that prevents power line excess Temperature according to claim 4, is characterized in that: described control element (3) is also connected with second detecting element (7) for detection of electrical work state of electrical equipment inside.
6. the device that prevents power line excess Temperature according to claim 1, is characterized in that: described switch element (3) is relay or circuit breaker, is arranged on electrical equipment inside, is electrically connected to control element (4), by control element (4), controls break-make.
7. the device that prevents power line excess Temperature according to claim 1, is characterized in that: described the first detecting element (6) is thermistor or temperature sensor.
8. an application rights requires the electrical equipment of the arbitrary described device that prevents power line excess Temperature of 1-7, it is characterized in that: described electrical equipment is electric heater, refrigerator, air-conditioning, electricity heating, electric rice cooker, electromagnetic oven, roaster or electric pressure cooker, there is the high-power components that causes power line excess Temperature described electrical equipment inside, the switch element (3) of its switching of control being connected with high-power components, the control element (4) of control switch element (3) and transmit second detecting element (7) of signal for detection of electrical work state to control element (4), in the power line of described electrical equipment (2), be provided with the first detecting element (6) that at least one detects power line temperature, described the first detecting element (6) is connected with described control element (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320171367.0U CN203481790U (en) | 2013-01-29 | 2013-04-08 | Device capable of preventing over high temperature of power line and electric appliance using the same |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320049631.3 | 2013-01-29 | ||
| CN201320049631 | 2013-01-29 | ||
| CN201320171367.0U CN203481790U (en) | 2013-01-29 | 2013-04-08 | Device capable of preventing over high temperature of power line and electric appliance using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203481790U true CN203481790U (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320171367.0U Expired - Lifetime CN203481790U (en) | 2013-01-29 | 2013-04-08 | Device capable of preventing over high temperature of power line and electric appliance using the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203481790U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103987144A (en) * | 2014-04-15 | 2014-08-13 | 刘文斌 | Intelligent induction cooker |
| CN107978959A (en) * | 2017-12-18 | 2018-05-01 | 深圳市创鑫激光股份有限公司 | Laser and its control method and storage medium |
| CN108266365A (en) * | 2018-01-03 | 2018-07-10 | 广东美的暖通设备有限公司 | The protective device of compressor, the guard method of compressor and compressor |
| WO2020124978A1 (en) * | 2018-12-20 | 2020-06-25 | 武汉海尔热水器有限公司 | Method for adjusting power of electric water heater, and electric water heater |
-
2013
- 2013-04-08 CN CN201320171367.0U patent/CN203481790U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103987144A (en) * | 2014-04-15 | 2014-08-13 | 刘文斌 | Intelligent induction cooker |
| CN103987144B (en) * | 2014-04-15 | 2016-08-10 | 刘文斌 | A kind of intelligent electromagnetic oven |
| CN107978959A (en) * | 2017-12-18 | 2018-05-01 | 深圳市创鑫激光股份有限公司 | Laser and its control method and storage medium |
| CN107978959B (en) * | 2017-12-18 | 2019-09-20 | 深圳市创鑫激光股份有限公司 | Laser and its control method and storage medium |
| CN108266365A (en) * | 2018-01-03 | 2018-07-10 | 广东美的暖通设备有限公司 | The protective device of compressor, the guard method of compressor and compressor |
| CN108266365B (en) * | 2018-01-03 | 2019-12-06 | 广东美的暖通设备有限公司 | compressor, protection method of compressor and protection device of compressor |
| WO2020124978A1 (en) * | 2018-12-20 | 2020-06-25 | 武汉海尔热水器有限公司 | Method for adjusting power of electric water heater, and electric water heater |
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Granted publication date: 20140312 |