JPH0250031A - Controller of air conditioner - Google Patents

Controller of air conditioner

Info

Publication number
JPH0250031A
JPH0250031A JP20039788A JP20039788A JPH0250031A JP H0250031 A JPH0250031 A JP H0250031A JP 20039788 A JP20039788 A JP 20039788A JP 20039788 A JP20039788 A JP 20039788A JP H0250031 A JPH0250031 A JP H0250031A
Authority
JP
Japan
Prior art keywords
timer
heating
burning
time
temperature
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
Application number
JP20039788A
Other languages
Japanese (ja)
Inventor
Yoshiji Ishikawa
石川 佳司
Junichi Maeda
純一 前田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rinnai Corp
Original Assignee
Rinnai Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rinnai Corp filed Critical Rinnai Corp
Priority to JP20039788A priority Critical patent/JPH0250031A/en
Publication of JPH0250031A publication Critical patent/JPH0250031A/en
Pending legal-status Critical Current

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  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)

Abstract

PURPOSE:To perform comfortable heating without giving any discomfort to a user especially while in bed by keeping heating power minimal when a timer is set and stopping heating when the set time is counted and the timer stops. CONSTITUTION:When ignition is detected by a thermocouple 34, a sparker 35 stops operating, thereafter a proportional valve 26 is controlled on the basis of a burning quantity determined by detected temperature of a set temperature room sensor 33 of a controller 32 in a burning control part 42. When a timer operating part 36 is operated at the time t1 of burning in a burning quantity Qa, a timer 44 begin to count and timer operation is performed, the burning quantity of a burner 16 is shown by a full line A, changed to the minimum burning quantity Qmin and heating ability is minimum. When the counting time T of the timer 44 passes at the time t2, each electromagnetic valves 23, 24 is closed and burning stops. Because the temperature is changed to low room temperature regardless of detected temperature, a feeling of disorder is scarcely felt after the operation stops.

Description

【発明の詳細な説明】 「産業上の利用分野] 本発明は、室内温度を検知して暖房能力を制御する暖房
機の制御装置に関し、特に温風暖房機において効果的で
ある。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a control device for a heater that detects indoor temperature and controls heating capacity, and is particularly effective for hot air heaters.

[従来の技術] 暖房機では、その暖房能力は、例えば使用者によって設
定される温度と検知される室内温度との差に応じて、自
動的に制御されている。また、暖房機には、一定時間が
経過すると運転を自動的に停止するためのタイマが備え
られていて、タイマをセットしておくと、改めて操作し
なくても、希望する時間に自動的に運転を停止できる。
[Prior Art] The heating capacity of a heater is automatically controlled depending on, for example, the difference between the temperature set by the user and the detected indoor temperature. In addition, the heater is equipped with a timer that automatically stops operation after a certain period of time.If you set the timer, the heater will automatically stop operating at the desired time without having to operate it again. Operation can be stopped.

従って、例えば就寝時にも暖房を継続させたまま、眠り
に就くことができる。このタイマ作動時の暖房能力は、
通常運転時(タイマ非作動時)と同様に、検知される室
内温度に基づいて、自動的に制御されている。
Therefore, for example, even when going to bed, the user can go to sleep while the heating continues. The heating capacity when this timer is activated is
As in normal operation (when the timer is not activated), it is automatically controlled based on the detected indoor temperature.

[発明が解決しようとする課題] しかし、暖房機の暖房能力は、使用者が室温をそのまま
感じる平常時を基準にして制御されるため、就寝時のよ
うに、使用者が寝具に身を置く場合には、タイマのセッ
トによって継続して同じ暖房能力で運転されると、暖房
効果を過剰に感するとともに、運転停止後には、室温低
下幅が大きくなるため、快適さに欠けるという問題があ
る。また、加熱した空気を送風機によって吹き出す温風
暖房機等では、就寝する際に送風機の騒音が耳障りにな
ることがあり、さらに、換気が必要な暖房機では、就寝
後の換気について配慮しなければならない。
[Problems to be Solved by the Invention] However, the heating capacity of the heater is controlled based on normal times when the user feels the room temperature as it is, so when the user places himself on the bedding, such as when sleeping, In some cases, if the timer is set and the unit is continuously operated at the same heating capacity, the heating effect will be felt to be excessive, and after the unit stops operating, the room temperature will drop significantly, resulting in a lack of comfort. . In addition, with warm air heaters that blow out heated air using a blower, the noise from the blower can be annoying when you go to bed.Furthermore, with heaters that require ventilation, consideration must be given to ventilation after sleeping. It won't happen.

本発明は、特に就寝時等にタイマによって自動的に運転
を停止する場合に、使用者に不快感を与えにくく、快適
な暖房を行うことができる暖房機の制御装置を提供する
ことを目的とする。
An object of the present invention is to provide a control device for a heater that can provide comfortable heating without causing discomfort to the user, especially when the operation is automatically stopped by a timer such as when sleeping. do.

[課題を解決するための手段] 本発明は、室内温度を検知する温度検知手段を備え、該
温度検知手段によって検知される室内温度に基づいて加
熱手段の加熱能力を制御する暖房機の制御装置において
、使用者により任意に設定された一定時間計時する計時
手段を備え、該計時手段の計時中には、前記温度検知手
段によって検知される室内温度に関係なく前記加熱手段
の加熱能力を最小加熱能力にするとともに、計時終了後
に前記加熱手段を停止させることを技術的手段とする。
[Means for Solving the Problems] The present invention provides a control device for a heater that includes a temperature detection means for detecting an indoor temperature and controls the heating capacity of a heating means based on the indoor temperature detected by the temperature detection means. is provided with a timer for measuring a certain period of time arbitrarily set by the user, and while the timer is measuring the time, the heating capacity of the heating means is set to the minimum heating level regardless of the indoor temperature detected by the temperature detection means. The technical means is to stop the heating means after the time measurement is completed.

[作用] 本発明の暖房機の制御装置では、使用者によって計時手
段の計時時間が設定されると、計時が開始され、加熱手
段の加熱能力が最小加熱能力にされて暖房が行われ、一
定時間継続される。計時手段により一定時間が計時され
、終了すると、加熱手段は停止する。
[Function] In the heater control device of the present invention, when the user sets the clock time of the clock means, time measurement is started, the heating capacity of the heating means is set to the minimum heating capacity, heating is performed, and the heating is performed at a constant rate. Lasts for hours. A certain period of time is counted by the timer, and when the time is over, the heating means is stopped.

[発明の効果] 本発明では、計時手段の計時中には、加熱手段は最小加
熱能力にされるため、暖房能力が低下する。従って、就
寝時に使用者が寝具に身を置いたとき受ける暖房効果を
過剰に感することがない。
[Effects of the Invention] In the present invention, while the timekeeping means is measuring time, the heating means is set to the minimum heating capacity, so that the heating capacity is reduced. Therefore, the user does not experience excessive heating effects when he or she places himself on the bedclothes while sleeping.

また、暖房能力の低下によって暖房温度が低下するため
、暖房停止後の室内温度の低下幅が小さくなり、暖房が
停止しても違和感を感じにくい、従って、暖房中にも暖
房停止後にも不快感を与えることがない。
In addition, since the heating temperature decreases due to a decrease in heating capacity, the range of decrease in indoor temperature after heating is stopped is small, and it is difficult to feel discomfort even when heating is stopped. Never give up.

また、送風機により温風を吹き出す暖房機では、暖房中
の暖房能力の低下によって、送風機の作動騒音が低下す
るため、就寝時にも不快感を与えにくい。
Furthermore, in a heater that blows hot air using an air blower, the operating noise of the air blower is reduced due to a reduction in the heating capacity during heating, so that it is less likely to cause discomfort when sleeping.

さらに、燃焼による燃焼ガスによって室内の暖房を行う
暖房機では、計時手段の作動中の燃焼量が減少するため
、換気に対する配慮を少なくすることができる。すなわ
ち、任意に設定する計時時間を、安全上の見地から長く
とることが可能となる。
Furthermore, in a heater that heats the room using combustion gas, the amount of combustion during the operation of the timer is reduced, so that consideration for ventilation can be reduced. In other words, it is possible to set an arbitrarily set clock time to a long time from a safety standpoint.

[実施例] 次に本発明を実施例に基づいて説明する。[Example] Next, the present invention will be explained based on examples.

第2図は本発明の暖房機の制御装置を使用したガスファ
ンヒータ1の構成を示すもので、このガスファンヒータ
1は、空気循環路10と、燃料供給路20と、制御装置
30とから構成される。
FIG. 2 shows the configuration of a gas fan heater 1 using the heater control device of the present invention. configured.

空気循環路10はケーシング10aによって形成され、
フィルタ11を備えた吸込口12からは、対流ファン1
3の作動によって空気が吸込まれる。
The air circulation path 10 is formed by a casing 10a,
A convection fan 1 is connected to a suction port 12 equipped with a filter 11.
Air is sucked in by the operation of step 3.

ケーシング10a内に吸込まれた空気の一部は、燃焼用
空気として空気導入管14によって導かれ、空気導入管
14内に設けられたノズル21から噴出される燃料ガス
とともに燃料混合室15へ供給される。燃料混合室15
で空気と混合された燃料ガスは、バーナ16の炎口を通
過して燃焼され、燃焼ガスは吸込口12から吸込まれた
他の空気と空気混合室17で混合されて、対流ファン1
3により温風吹出口18から室内へ吹出される。
A part of the air sucked into the casing 10a is guided as combustion air through the air introduction pipe 14, and is supplied to the fuel mixing chamber 15 together with the fuel gas ejected from the nozzle 21 provided in the air introduction pipe 14. Ru. Fuel mixing chamber 15
The fuel gas mixed with air passes through the flame port of the burner 16 and is combusted, and the combustion gas is mixed with other air sucked in from the suction port 12 in the air mixing chamber 17, and then the convection fan 1
3, the warm air is blown into the room from the hot air outlet 18.

燃料供給路20は、図示しない燃料供給源から供給され
る燃料ガスを、ガス管22によって前述のノズル21へ
導くもので、燃料供給路20には、上流側から元電磁弁
23、主電磁弁24、ガバナ25、比例弁26がそれぞ
れ設けられている。
The fuel supply passage 20 guides fuel gas supplied from a fuel supply source (not shown) to the above-mentioned nozzle 21 through a gas pipe 22.The fuel supply passage 20 includes a former solenoid valve 23, a main solenoid valve, and a main solenoid valve from the upstream side. 24, a governor 25, and a proportional valve 26 are provided, respectively.

制御装置30は、第1図に示すとおり、マイクロコンピ
ュータを中心とした制御回路40と、制御回路40とは
独立した安全回路30aとから構成される装置 される運転スイッチ31およびコントローラ32と、室
温を検出するための室温センサ33とが備えられている
.また、バーナ16の近傍には、燃焼による炎の温度を
検出するためのサーモカップル34と、点火のためのス
パーカ35とが備えられている、さらに、就寝時等に、
一定時間暖房を継続して行うためのタイマ操作部36が
設けられている。
As shown in FIG. 1, the control device 30 includes a control circuit 40 centered on a microcomputer, a safety circuit 30a independent of the control circuit 40, an operation switch 31 and a controller 32, and a room temperature control circuit 30. A room temperature sensor 33 is provided to detect the temperature. Further, near the burner 16, a thermocouple 34 for detecting the temperature of the flame caused by combustion and a sparker 35 for ignition are provided.
A timer operation unit 36 is provided to continue heating for a certain period of time.

制御回路40は、図示しない電源プラグを電灯線コンセ
ントに差込むことにより常時供給される電力により作動
するもので、シーケンス制御部41、燃焼制御部42、
送風制御部43と、タイマ44の各機能部を有する。
The control circuit 40 is operated by power constantly supplied by inserting a power plug (not shown) into a power line outlet, and includes a sequence control section 41, a combustion control section 42,
It includes a ventilation control section 43 and a timer 44.

シーケンス制御部41は、運転スイッチ31を操作する
と、所定のシーケンスでスパーカ35を作動させ、各電
磁弁23.24を開いて燃料ガスをバーナ16へ供給し
て燃焼を開始させるとともに、サーモカップル34によ
りバーナ16の燃焼が検知されなくなると、各電磁弁2
3.24を閏状態に制御して、燃焼を停止する。
When the operation switch 31 is operated, the sequence control unit 41 operates the sparker 35 in a predetermined sequence, opens each electromagnetic valve 23 and 24 to supply fuel gas to the burner 16 to start combustion, and also operates the thermocouple 34. When combustion in the burner 16 is no longer detected, each solenoid valve 2
3. Control 24 into a leap state and stop combustion.

燃焼制御部42は、コントローラ32により設定される
温度と、室温センサ33によって検知される室内温度と
の温度差に応じてバーナ16の燃焼量を決定し、比例弁
26を制御する。
The combustion control unit 42 determines the combustion amount of the burner 16 according to the temperature difference between the temperature set by the controller 32 and the indoor temperature detected by the room temperature sensor 33, and controls the proportional valve 26.

送風制御部43は、サーモカップル34によって検知さ
れるバーナ16での燃焼温度に応じて対流ファン13を
制御する。
The air blowing control unit 43 controls the convection fan 13 according to the combustion temperature in the burner 16 detected by the thermocouple 34 .

タイマ44は、予めタイマ操作部36によって設定され
る一定時間が経過したときに、自動的に暖房運転を停止
するためのもので、運転スイッチ31がオン状態の場合
にのみ計時を開始する。このタイマ44の作動状態は、
常にシーケンス制御部41へ伝えられる。
The timer 44 is for automatically stopping the heating operation when a certain period of time preset by the timer operation unit 36 has elapsed, and starts timing only when the operation switch 31 is in the on state. The operating state of this timer 44 is
It is always transmitted to the sequence control section 41.

シーケンス制御部41は、タイマ44が計時を開始する
と、燃焼制御部42による比例弁26の制御状態を最小
燃焼量になるように変更し、タイマ44の計時が終了す
ると、各電磁弁23.24を閉じて、バーナ16の燃焼
を停止する。
When the timer 44 starts counting, the sequence control unit 41 changes the control state of the proportional valve 26 by the combustion control unit 42 to the minimum combustion amount, and when the timer 44 finishes counting, the sequence control unit 41 changes the control state of the proportional valve 26 to the minimum combustion amount, and when the timer 44 finishes timing, changes the control state of the proportional valve 26 to the minimum combustion amount. is closed to stop combustion of the burner 16.

安全回路30aは、ケーシング10a内の空気混合室1
7内の温度が所定の温度に上昇したときに接点が開く図
示しないオーバーし−トスイッチの信号により、制御回
路40の制御状態とは関係なく、元電磁弁23および主
電磁弁24への通電を停止して、バーナ16の燃焼を停
止する。
The safety circuit 30a connects the air mixing chamber 1 in the casing 10a.
The source solenoid valve 23 and the main solenoid valve 24 are energized by a signal from an over switch (not shown) whose contacts open when the temperature inside the valve 7 rises to a predetermined temperature, regardless of the control state of the control circuit 40. to stop the combustion of the burner 16.

次に、以上の構成からなる本実施例のガスファンヒータ
1の作動を、第3図に基づいて説明する。
Next, the operation of the gas fan heater 1 of this embodiment having the above configuration will be explained based on FIG. 3.

運転スイッチ31がオンにされるとスパーカ35が点火
作動を開始する。そしてスパーカ35の作動が検知され
ると元電磁弁23と主電磁弁24とが開き、比例弁26
には最大燃焼量に相当する電流値が通電され、それに応
じた量の燃料ガスがノズル21から噴出され、空気導入
管14を通過する空気とともに混合室へ供給されて混合
気となり、バーナ16で着火する。
When the operation switch 31 is turned on, the sparker 35 starts ignition operation. When the operation of the sparker 35 is detected, the original solenoid valve 23 and the main solenoid valve 24 open, and the proportional valve 26 opens.
A current value corresponding to the maximum combustion amount is applied to the , and a corresponding amount of fuel gas is ejected from the nozzle 21 , and is supplied to the mixing chamber together with the air passing through the air introduction pipe 14 to form an air-fuel mixture, which is then heated in the burner 16 . ignite.

サーモカップル34によって着火が検知されると、スパ
ーカ35は作動を停止し、その後は、燃焼制御部42で
コントローラ32の設定温度と室温センサ33の検出温
度とによって決定される燃焼量に基づいて比例弁26が
制御される。また、対流ファン13はサーモカップル3
4の出力信号に応じて制御され、吸込口12から吸込ま
れた室内空気は、空気混合室17でバーナ16の燃焼に
よって生成された燃焼ガスと混合されて、適切な風量に
制御された温風となって温風吹出口18から吹出され、
暖房運転が行われる。
When the thermocouple 34 detects ignition, the sparker 35 stops operating, and then the combustion control unit 42 adjusts the combustion rate proportionally based on the combustion amount determined by the set temperature of the controller 32 and the detected temperature of the room temperature sensor 33. Valve 26 is controlled. In addition, the convection fan 13 is a thermocouple 3
The indoor air sucked in from the suction port 12 is mixed with combustion gas generated by combustion in the burner 16 in the air mixing chamber 17, and heated air with an appropriate air volume is generated. The hot air is blown out from the hot air outlet 18,
Heating operation is performed.

燃焼量Qaで燃焼中の時間t1に、タイマ操作部36が
操作されると、タイマ44が計時を開始し、タイマ運転
となり、バーナ16の燃焼量は実1!Aに示すとおり、
最小燃焼量Qlinに変更され、暖房能力は最小能力と
なる。
When the timer operation unit 36 is operated at time t1 when combustion is in progress at the combustion amount Qa, the timer 44 starts measuring time and enters timer operation, and the combustion amount of the burner 16 is actually 1! As shown in A,
The heating capacity is changed to the minimum combustion amount Qlin, and the heating capacity becomes the minimum capacity.

従って、例えば、就寝時にタイマ運転を行うと、暖房能
力が減少するため、使用者が寝具に身を置いていても、
暖房状態を過剰に感することがなく、適度な暖房を行う
ことができる。また、対流ファン13の作動状態も、燃
焼量の減少に伴ってその回転数が減少するため、回転に
伴う騒音を少なくすることができ、安眠を妨げない、さ
らに、吹き出される燃焼ガスも、燃焼量の減少に伴って
減少するため、換気に対する配慮を心配する必要がない
Therefore, for example, if the timer operation is performed while sleeping, the heating capacity will be reduced, so even if the user is in bed,
Appropriate heating can be performed without feeling that the heating state is excessive. In addition, since the operating state of the convection fan 13 decreases as the amount of combustion decreases, the number of rotations decreases, so the noise associated with rotation can be reduced, and a sound sleep is not disturbed.Furthermore, the combustion gas blown out is Since the amount decreases as the amount of combustion decreases, there is no need to worry about consideration for ventilation.

時間t2でタイマ44の計時時間Tが経過すると、各電
磁弁23.24が閉じられ、燃焼が停止する。また、対
流ファン13は、燃焼の停止時のサーモカップル34の
検知温度に応じた時間だけ継続して作動した後に、停止
する。
When the time T measured by the timer 44 elapses at time t2, each electromagnetic valve 23, 24 is closed and combustion is stopped. Further, the convection fan 13 continues to operate for a period of time corresponding to the temperature detected by the thermocouple 34 when combustion is stopped, and then stops.

タイマ運転中には、バーナ16は最小燃焼量Q1nに制
御され、暖房能力が最小になっているため、検知される
温度と関係なく、低い室内温度に変更されるため、破線
Bに示すようにそのままの燃焼量が維持される従来の暖
房機と比較して、運転停止後の室内温度の低下幅が少な
く、運転停止後に違和感を感することが少ない。
During timer operation, the burner 16 is controlled to the minimum combustion amount Q1n, and the heating capacity is minimized, so the indoor temperature is changed to a low one regardless of the detected temperature, as shown by the broken line B. Compared to conventional heaters that maintain the same amount of combustion, the room temperature decreases less after the unit stops operating, and you are less likely to feel uncomfortable after the unit stops operating.

本実施例では比例弁を制御して最小燃焼量を得るように
したが、ガス管において比例弁の上流と下流とを細径の
バイパス管で連通し、比例弁への通電を停止して、最小
燃焼量を得るようにしてもよい。
In this embodiment, the proportional valve was controlled to obtain the minimum combustion amount, but the upstream and downstream sides of the proportional valve were communicated through a small-diameter bypass pipe in the gas pipe, and the energization to the proportional valve was stopped. You may try to obtain the minimum amount of combustion.

あるいは、燃料供給量の調節に比例弁を使用しないで、
それぞれ電磁弁を備えた複数のガス管を並列に設け、電
磁弁の制御によって段階的に燃料供給量を調節するもの
においても、同様にバイパス管を設けることによって、
最小燃焼量を得られるようにしてもよい。
Alternatively, do not use a proportional valve to adjust the fuel supply.
Even in systems where multiple gas pipes, each equipped with a solenoid valve, are installed in parallel and the amount of fuel supplied is adjusted in stages by controlling the solenoid valves, by similarly providing a bypass pipe,
It may be possible to obtain the minimum amount of combustion.

以上の実施例では、熱源としてガスバーナを用いたファ
ンヒータを示したが、FF方式の燃焼や他の燃料でもよ
い。また、燃焼熱を加熱源とするものでなく、電気を使
用する暖房装置であってもよい。
In the above embodiments, a fan heater using a gas burner was used as the heat source, but FF type combustion or other fuels may be used. Furthermore, the heating device may be a heating device that uses electricity instead of using combustion heat as the heating source.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の実施例の制御装置を示すブロック図、
第2図は本発明にかかるガスファンヒータの構成を示す
概略構成図、第3図は本実施例の作動説明のためのタイ
ムチャートである。 図中、33・・・室温センサ(温
度検知手段)、40・・・制御回路、44・・・タイマ
(計時手段)。
FIG. 1 is a block diagram showing a control device according to an embodiment of the present invention;
FIG. 2 is a schematic configuration diagram showing the configuration of the gas fan heater according to the present invention, and FIG. 3 is a time chart for explaining the operation of this embodiment. In the figure, 33... Room temperature sensor (temperature detection means), 40... Control circuit, 44... Timer (time measuring means).

Claims (1)

【特許請求の範囲】 1)室内温度を検知する温度検知手段を備え、該温度検
知手段によって検知される室内温度に基づいて加熱手段
の加熱能力を制御する暖房機の制御装置において、 使用者により任意に設定された一定時間計時する計時手
段を備え、該計時手段の計時中には、前記温度検知手段
によって検知される室内温度に関係なく前記加熱手段の
加熱能力を最小加熱能力にするとともに、計時終了後に
前記加熱手段を停止させることを特徴とする暖房機の制
御装置。
[Scope of Claims] 1) In a control device for a heater, which includes a temperature detection means for detecting an indoor temperature and controls the heating capacity of the heating means based on the indoor temperature detected by the temperature detection means, the user comprising a timer for counting an arbitrarily set certain period of time; while the timer is measuring time, the heating capacity of the heating means is set to the minimum heating capacity regardless of the indoor temperature detected by the temperature detection means; A control device for a heating machine, characterized in that the heating means is stopped after timing ends.
JP20039788A 1988-08-11 1988-08-11 Controller of air conditioner Pending JPH0250031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20039788A JPH0250031A (en) 1988-08-11 1988-08-11 Controller of air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20039788A JPH0250031A (en) 1988-08-11 1988-08-11 Controller of air conditioner

Publications (1)

Publication Number Publication Date
JPH0250031A true JPH0250031A (en) 1990-02-20

Family

ID=16423643

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20039788A Pending JPH0250031A (en) 1988-08-11 1988-08-11 Controller of air conditioner

Country Status (1)

Country Link
JP (1) JPH0250031A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04217717A (en) * 1990-12-18 1992-08-07 Rinnai Corp Air-heater
US20110042472A1 (en) * 2009-08-20 2011-02-24 Enerco Group, Inc. Portable Catalytic Heater

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5538159B2 (en) * 1977-03-03 1980-10-02
JPS60142154A (en) * 1983-12-28 1985-07-27 Matsushita Electric Ind Co Ltd Hot air type room heater

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5538159B2 (en) * 1977-03-03 1980-10-02
JPS60142154A (en) * 1983-12-28 1985-07-27 Matsushita Electric Ind Co Ltd Hot air type room heater

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04217717A (en) * 1990-12-18 1992-08-07 Rinnai Corp Air-heater
US20110042472A1 (en) * 2009-08-20 2011-02-24 Enerco Group, Inc. Portable Catalytic Heater
US8684276B2 (en) * 2009-08-20 2014-04-01 Enerco Group, Inc. Portable catalytic heater
US9222682B2 (en) 2009-08-20 2015-12-29 Enerco Group, Inc. Portable catalytic heater

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