CN2386568Y - Protecting device for superhigh temp. of electric heating appliance - Google Patents
Protecting device for superhigh temp. of electric heating appliance Download PDFInfo
- Publication number
- CN2386568Y CN2386568Y CN 99216672 CN99216672U CN2386568Y CN 2386568 Y CN2386568 Y CN 2386568Y CN 99216672 CN99216672 CN 99216672 CN 99216672 U CN99216672 U CN 99216672U CN 2386568 Y CN2386568 Y CN 2386568Y
- Authority
- CN
- China
- Prior art keywords
- electric heating
- heating appliance
- temperature controller
- power supply
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Control Of Resistance Heating (AREA)
Abstract
The utility model discloses a protecting device for superhigh temperature of an electric heating appliance, which is mainly provided with a protector for electric heating superhigh temperature on a load side power supply. The protector for electric heating superhigh temperature is composed of a converting switch, a jump coil, an alarm contact point of a temperature controller, and a testing button which is in connection in parallel with the alarm contact point. When an electric heating appliance has unusually superhigh temperature, the alarm contact point in the protector for electric heating superhigh temperature is closed, causing the jump coil to play actions, and driving the converting switch to cut off power supply, so that the electric heating appliance is no longer heated by electricity, to prevent the electric heating appliance from being burned because of superhigh temperature.
Description
The utility model relates to a kind of overtemperature protection system, is meant a kind of overtemperature degree protective device of electric heating appliance especially.
Electric heating appliance (as plastics materal drier, plastic moisture removing drying machine etc.) commonly used; when unusual overtemperature takes place in these High Temperature facility; mostly utilize the contact of electromagnetic contactor to do the design of deenergization; the right contact that this utilizes electromagnetic contactor is under the continuous action of long-term disconnection, conducting; regular meeting takes place to fuse because of aging; so in case break down, then electric heating appliance can burn because of overtemperature, even cause the fatal accident of fire to take place.
Given this, the purpose of this utility model just is to provide a kind of overtemperature degree protective device of novel electric heating appliance, when it can guarantee that electric heating appliance takes place because of unusual overtemperature, promptly can deenergization, and electric heating appliance can not be switched on heat, and then reach defencive function.
The purpose of this utility model is achieved through the following technical solutions: a kind of overtemperature degree protective device of electric heating appliance; it is connected with a temperature controller at the load side power supply; the contact of heating of this temperature controller then is serially connected with an electromagnetic contactor; be connected with the contact of electromagnetic contactor on the mains side; the load side power supply connects electric heating appliance again; it is characterized in that: be provided with an electric heating overtemperature degree protector on this load side power supply again; this electric heating overtemperature degree protector is to switch switch by one; the alarm contact of one trip coil and a temperature controller constitutes, and the alarm contact of this temperature controller is an end that is connected in series in this trip coil.
The alarm contact of described temperature controller can be parallel with one for the test button of confirming action by test.
This shows; when the contact of electric heating appliance generation abnormal high temperature that is connected in the load side power supply or electromagnetic contactor aging and can't deenergization; then the alarm contact of electric heating overtemperature degree protector is promptly closed; and trip coil moves and diverter switch is switched to off position; so, the electric heating appliance that is connected in the load side power supply promptly no longer power supply heat, and then reach the function of protection; avoiding because of unusual overtemperature burns, even the not blessing condition of breaking out of fire.
Below in conjunction with drawings and the specific embodiments the utility model is further described in more detail.
At first; see also shown in Figure 1; the utility model mainly is to be connected with a temperature controller 1 on load side power supply B; 10 of the contacts of heating of temperature controller 1 are serially connected with an electromagnetic contactor 2; be connected with the contact 20 of electromagnetic contactor in addition on the mains side A; load side power supply B is provided with an electric heating overtemperature degree protector 3 again; this electric heating overtemperature degree protector 3 is to switch switch 30 by one; one trip coil 31; and; be parallel test button 32 from one of trip coil 31 1 ends connection; alarm contact 11 is formed, and load side power supply B is connected to electric heating facility 4 (as the plastics materal drier again; the plastic moisture removing drying machine).
When mains side A is subjected to electricity; earlier the diverter switch 30 of electric heating overtemperature degree protector 3 is pulled to the ON place; then temperature controller 1 action; the contact 10 of heating of simultaneous temperature controller is on-state; make electromagnetic contactor 2 excitatory; contact 20 is closure state; and when surpassing the set point of temperature controller 1 to the temperature anomaly of electric heating appliance 4; contact 10 trippings of heating of temperature controller 1; alarm contact 11 closures; this moment, electromagnetic contactor 2 was that loss of excitation and contact 20 replied and be the OFF off-position; the then i.e. no longer energising of load side power supply B; in the time of can't disconnecting if the contact 20 aging fusions of electromagnetic contactor 2 take place; can make trip coil 31 actions and drive diverter switch 30 to OFF position deenergizations this moment by alarm contact 11 closures of temperature controller 2; so; be connected under the load side power supply B electric heating appliance 4 promptly no longer energising heat, burn because of unusual overtemperature to avoid electric heating appliance 4, even cause the fatal accident generation of fire.
By above explanation as can be known, the utility model has following plurality of advantages really:
One, can guarantee that electric heating appliance can bring into play the defencive function of outage immediately because of unusual overtemperature.
Two, the contact that can prevent electromagnetic contactor wears out when fusing (can't make cut-out function), causes electric heating appliance to continue to heat and overheated fatal accident generation of burning.
In sum, the utility model embodiment really can reach desired effect and application target, and has broken through the traditional methods existing problems more, has met novel patent application important document in fact.
Claims (2)
1, a kind of overtemperature degree protective device of electric heating appliance; it is connected with a temperature controller at the load side power supply; the contact of heating of this temperature controller then is serially connected with an electromagnetic contactor; be connected with the contact of electromagnetic contactor on the mains side; the load side power supply connects electric heating appliance again; it is characterized in that: be provided with an electric heating overtemperature degree protector on this load side power supply again; this electric heating overtemperature degree protector is made of an alarm contact that switches switch, a trip coil and a temperature controller, and the alarm contact of this temperature controller is an end that is connected in series in this trip coil.
2, the overtemperature degree protective device of electric heating appliance as claimed in claim 1 is characterized in that: the alarm contact of described temperature controller can be parallel with one for the test button of confirming action by test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99216672 CN2386568Y (en) | 1999-07-14 | 1999-07-14 | Protecting device for superhigh temp. of electric heating appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99216672 CN2386568Y (en) | 1999-07-14 | 1999-07-14 | Protecting device for superhigh temp. of electric heating appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2386568Y true CN2386568Y (en) | 2000-07-05 |
Family
ID=34008270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99216672 Expired - Fee Related CN2386568Y (en) | 1999-07-14 | 1999-07-14 | Protecting device for superhigh temp. of electric heating appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2386568Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016029428A1 (en) * | 2014-08-29 | 2016-03-03 | Trane Air Conditioning Systems (China) Co., Ltd. | Systems and methods to detect heater malfunction and prevent dry burning |
-
1999
- 1999-07-14 CN CN 99216672 patent/CN2386568Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016029428A1 (en) * | 2014-08-29 | 2016-03-03 | Trane Air Conditioning Systems (China) Co., Ltd. | Systems and methods to detect heater malfunction and prevent dry burning |
| US10365009B2 (en) | 2014-08-29 | 2019-07-30 | Trane International Inc. | Systems and methods to detect heater malfunction and prevent dry burning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |