JPH0178813U - - Google Patents
Info
- Publication number
- JPH0178813U JPH0178813U JP1987173257U JP17325787U JPH0178813U JP H0178813 U JPH0178813 U JP H0178813U JP 1987173257 U JP1987173257 U JP 1987173257U JP 17325787 U JP17325787 U JP 17325787U JP H0178813 U JPH0178813 U JP H0178813U
- Authority
- JP
- Japan
- Prior art keywords
- time
- switching element
- ratio
- electric heating
- turns
- 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.)
- Pending
Links
- 238000005485 electric heating Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Central Heating Systems (AREA)
Description
第１図は本考案の一実施例の電気カーペツトの
部分断面図、第２図は本考案に係る電気カーペツ
トの温度制御回路の一実施例の回路図、第３図は
オン時間のオフ時間に対する比率が大きい場合の
電気発熱体への通電電流波形図、第４図はオン時
間のオフ時間に対する比率が小さい場合の電気発
熱体への通電電流波形図、第５図は本考案に係る
電気カーペツトにおける温度変化の特性図、第６
図は従来の電気カーペツトにおける温度変化の特
性図である。
符号の説明、１……電気カーペツト、２……電
気発熱体、３……感熱体、４……制御回路、５…
…スイツチング素子、６……交流電源、τ……交
流電源の周期、Ｔｎ……オン時間、Ｔｆ……オフ
時間。
Fig. 1 is a partial sectional view of an electric carpet according to an embodiment of the present invention, Fig. 2 is a circuit diagram of an embodiment of a temperature control circuit for an electric carpet according to the present invention, and Fig. 3 is a diagram showing the relationship between on time and off time. Figure 4 is a waveform diagram of the current flowing to the electric heating element when the ratio is large, Figure 4 is a waveform diagram of the current flowing to the electric heating element when the ratio of on time to off time is small, and Figure 5 is the electric carpet according to the present invention. Characteristic diagram of temperature change in , No. 6
The figure is a characteristic diagram of temperature changes in a conventional electric carpet. Explanation of symbols, 1... Electric carpet, 2... Electric heating element, 3... Heat sensitive element, 4... Control circuit, 5...
...Switching element, 6...AC power supply, τ...cycle of AC power supply, Tn...on time, Tf...off time.
Claims (1)
ン・オフするスイツチング素子と、感熱体と、前
記スイツチング素子のオン・オフを切り換えて前
記スイツチング素子のオン時間とオフ時間の比率
を前記感熱体で検出した温度に基づき変化させる
と共にその切り換えを交流電源のゼロクロス点で
行う制御回路とを具備したことを特徴とする電気
カーペツト。 ２ スイツチング素子のオン時間とオフ時間が、
それぞれ交流電源の周期の倍数にされてなる実用
新案登録請求の範囲第１項記載の電気カーペツト
。[Claims for Utility Model Registration] 1. An electric heating element, a switching element that turns on and off electricity to the electric heating element, a heat sensitive element, and an on-time of the switching element that turns on and off the switching element. and a control circuit that changes the ratio of the off time and the off time based on the temperature detected by the heat sensitive element, and switches the ratio at the zero cross point of the AC power supply. 2 The on time and off time of the switching element are
The electric carpet according to claim 1, each having a period that is a multiple of the period of an AC power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987173257U JPH0178813U (en) | 1987-11-12 | 1987-11-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987173257U JPH0178813U (en) | 1987-11-12 | 1987-11-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0178813U true JPH0178813U (en) | 1989-05-26 |
Family
ID=31465185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987173257U Pending JPH0178813U (en) | 1987-11-12 | 1987-11-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0178813U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03205776A (en) * | 1989-12-29 | 1991-09-09 | Tokyo Erekutoron Kyushu Kk | Heating device |
-
1987
- 1987-11-12 JP JP1987173257U patent/JPH0178813U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03205776A (en) * | 1989-12-29 | 1991-09-09 | Tokyo Erekutoron Kyushu Kk | Heating device |
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