JP2525769B2 - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JP2525769B2 JP2525769B2 JP61073471A JP7347186A JP2525769B2 JP 2525769 B2 JP2525769 B2 JP 2525769B2 JP 61073471 A JP61073471 A JP 61073471A JP 7347186 A JP7347186 A JP 7347186A JP 2525769 B2 JP2525769 B2 JP 2525769B2
- Authority
- JP
- Japan
- Prior art keywords
- panel
- heat exchanger
- front panel
- refrigeration cycle
- refrigerant
- 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
Links
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は、室内側ユニットの前面パネルに冷媒通路を
設けて輻射パネルとした空気調和機に関する。The present invention relates to an air conditioner in which a refrigerant passage is provided in a front panel of an indoor unit to form a radiation panel.
（従来の技術） この種の空気調和機は、第６図に示すように、冷媒パ
イプを埋設した前面パネル１の四側部に吸込口２を設け
るとともに、前面パネル１の右側方に吹出口３を設け、
前面パネル１の後方に室内側熱交換器および送風機を配
設することで構成され、吸込口２から吸込まれた空気を
前面パネル１および室内側熱交換器で熱交換して吹出口
３から室内に吹出すようにしている。(Prior Art) As shown in FIG. 6, an air conditioner of this type is provided with suction ports 2 on four sides of a front panel 1 in which a refrigerant pipe is embedded, and an outlet on the right side of the front panel 1. 3 is provided,
It is configured by arranging an indoor heat exchanger and a blower behind the front panel 1, and the air sucked from the suction port 2 is heat-exchanged by the front panel 1 and the indoor heat exchanger so that the air is blown from the air outlet 3 into the room. I am trying to blow it out.
上記空気調和機の冷媒サイクルは、第７図に示すよう
に、圧縮機４、四方弁５、室外側熱交換器６、減圧装置
７および室内側熱交換器８を順次配管接続し、四方弁５
の切り換えにより冷暖房運転を行ない得るようにすると
ともに、前面パネルの冷媒パイプ９を室内側熱交換器８
の冷媒パイプから分岐することで、前面パネルを室内側
熱交換器８と同じ作用をするようにしている。In the refrigerant cycle of the air conditioner, as shown in FIG. 7, the compressor 4, the four-way valve 5, the outdoor heat exchanger 6, the decompression device 7, and the indoor heat exchanger 8 are sequentially connected by piping to form a four-way valve. 5
Of the indoor heat exchanger 8 and the refrigerant pipe 9 on the front panel.
The front panel has the same function as the indoor heat exchanger 8 by diverging from the refrigerant pipe.
すなわち、暖房運転時には、前面パネルの冷媒パイプ
９を室内側熱交換器８と同様に凝縮器として作用させる
ことにより、前面パネルを加温して輻射パネルを構成
し、冷房運転時には、前面パネルの冷媒パイプ９を室内
側熱交換器８と同様に蒸発器として作用させることによ
り、前面パネルを冷却して輻射パネルを構成するように
している。That is, during the heating operation, the refrigerant pipe 9 on the front panel acts as a condenser like the indoor heat exchanger 8 to heat the front panel to form a radiation panel, and during the cooling operation, the front panel By operating the refrigerant pipe 9 as an evaporator like the indoor heat exchanger 8, the front panel is cooled to form a radiation panel.
（発明が解決しようとする問題点） 上記空気調和機では、冷房運転時にパネル運転のみの
場合、室内ファンを停止または超低速とし冷風冷房機能
を停止させるため、冷凍サイクルの冷媒の圧力が異常低
下したり、暖房運転時にパネル運転のみの場合、室内フ
ァンを停止または超低速とし温風暖房機能を停止させる
ため、冷凍サイクルの冷媒の圧力が異常上昇したりし、
圧縮機の運転信頼性の確保が難しい。(Problems to be Solved by the Invention) In the above air conditioner, when only the panel operation is performed during the cooling operation, the indoor fan is stopped or set to an ultra-low speed to stop the cooling air cooling function, so that the refrigerant pressure in the refrigeration cycle is abnormally lowered. In the case of only panel operation during heating operation, the indoor fan is stopped or the super-low speed is used to stop the hot air heating function, so the pressure of the refrigerant in the refrigeration cycle rises abnormally,
It is difficult to secure the operational reliability of the compressor.
本発明は上記した点に鑑みてなされたもので、前面パ
ネルに設けたパネルの温度を検出する温度センサと冷凍
サイクルをパネルのみによるパネル運転と熱交換器とパ
ネルによる温風プラスパネル運転に制御する制御装置と
により、パネル運転時に温度センサにより検出されるパ
ネル温度が所定値になったら冷凍サイクルをパネル運転
から温風プラスパネル運転に移行することで、暖房運転
時の冷凍サイクルの冷媒圧力の異常上昇や冷房運転時の
冷凍サイクル異常低下を防止して、圧縮機の運転信頼性
を確保する空気調和機を提供することを目的とする。The present invention has been made in view of the above points, and controls the temperature sensor for detecting the temperature of the panel provided on the front panel and the refrigeration cycle to the panel operation by only the panel and the hot air plus panel operation by the heat exchanger and the panel. When the panel temperature detected by the temperature sensor during the panel operation reaches a predetermined value by the control device, the refrigeration cycle is switched from the panel operation to the warm air plus panel operation, thereby the refrigerant pressure of the refrigeration cycle during the heating operation is changed. An object of the present invention is to provide an air conditioner that prevents abnormal rises and abnormal reductions in the refrigeration cycle during cooling operation and ensures operational reliability of the compressor.
（問題点を解決するための手段） 本発明の空気調和機は、圧縮機、四方弁、室外側熱交
換器、減圧装置および室内側熱交換器を順次配管により
接続し、四方弁の切換えにより冷暖房運転を行なう冷凍
サイクルを備え、前記室内側熱交換器を有する室内側ユ
ニットの前面パネルに冷媒通路を設け、この冷媒通路を
前記四方弁と室内側熱交換器との間に介設し、前記前面
パネルにパネルの温度を検出する温度センサを設けると
ともに、冷凍サイクルをパネルのみによるプラス運転に
制御する制御装置を具備したことを特徴とする。(Means for Solving Problems) In the air conditioner of the present invention, the compressor, the four-way valve, the outdoor heat exchanger, the pressure reducing device, and the indoor heat exchanger are sequentially connected by piping, and the four-way valve is switched. A refrigeration cycle for performing heating and cooling operation is provided, and a refrigerant passage is provided on the front panel of the indoor unit having the indoor heat exchanger, and the refrigerant passage is provided between the four-way valve and the indoor heat exchanger, The front panel is provided with a temperature sensor for detecting the temperature of the panel, and a control device for controlling the refrigeration cycle to a positive operation only by the panel is provided.
（作用） 本発明の空気調和機では、冷凍サイクルをパネルのみ
によるパネル運転と熱交換器とパネルによる温度プラス
パネル運転に制御する制御装置を具備し、前面パネルに
設けた温度センサにより検出される前面パネル温度の検
出値を制御装置に入力することで、パネル運転時に温度
センサにより検出されるパネル温度が所定値になったら
冷凍サイクルをパネル運転から温風プラスパネル運転に
移行することにより、冷房運転時の冷凍サイクルの冷媒
圧力の異常上昇や冷房運転時の冷凍サイクルの冷媒圧縮
の異常低下を防止し、これにより、圧縮機の運転信頼性
を確保できる。(Operation) In the air conditioner of the present invention, the refrigeration cycle is provided with a control device for controlling the panel operation by only the panel, the heat exchanger, and the temperature plus panel operation by the panel, and is detected by the temperature sensor provided on the front panel. By inputting the detected value of the front panel temperature to the control device, when the panel temperature detected by the temperature sensor during panel operation reaches a predetermined value, the refrigeration cycle shifts from panel operation to warm air plus panel operation, thereby cooling It is possible to prevent an abnormal increase in refrigerant pressure in the refrigeration cycle during operation and an abnormal decrease in refrigerant compression in the refrigeration cycle during cooling operation, thereby ensuring operational reliability of the compressor.
（実施例） 以下本発明の実施例を図面につき説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
なお、第３図において第７図と同一部材について同一
符号を付す。In FIG. 3, the same members as those in FIG. 7 are designated by the same reference numerals.
第１図はスプリット形エアコンディショナの室内側ユ
ニット10を示し、この室外側ユニット10の前面パネル11
の左右両側には吸込口12,12が形成され、前面上部およ
び下部には吹出口13,13が形成されている。第２図に示
すように、前面パネル11に設けた断熱材層14には全面に
わたって蛇行状に冷媒通路15が埋設されていて輻射パネ
ルを構成している。また、前面パネル11の後方には、室
内側熱交換器８および送風機16が設けられている。FIG. 1 shows an indoor unit 10 of a split type air conditioner, and a front panel 11 of the outdoor unit 10.
Suction ports 12 and 12 are formed on both left and right sides, and air outlets 13 and 13 are formed on the upper and lower portions of the front surface. As shown in FIG. 2, in the heat insulating material layer 14 provided on the front panel 11, a refrigerant passage 15 is buried in a meandering shape over the entire surface to form a radiation panel. Further, the indoor heat exchanger 8 and the blower 16 are provided behind the front panel 11.
上記スプリット形エアコンディショナの冷凍サイクル
は、第３図に示すように、圧縮機４、四方弁５、室外側
熱交換器６、減圧装置７および室内側熱交換器８を順次
配管により接続することで構成され、四方弁５の切換え
により冷暖房運転が行なわれる。上記冷凍サイクルの四
方弁５と室内側熱交換器８との間に冷媒通路15が接続さ
れている。この冷媒通路15と室内側熱交換器８の間に
は、室内側熱交換器８側に冷媒を流す第１開閉弁17が設
けられるとともに、冷媒通路15、第１開閉弁17と並列
に、四方弁５側に冷媒を流す第２開閉弁18が設けられて
いる。In the refrigeration cycle of the split type air conditioner, as shown in FIG. 3, the compressor 4, the four-way valve 5, the outdoor heat exchanger 6, the decompression device 7, and the indoor heat exchanger 8 are sequentially connected by piping. The air conditioning operation is performed by switching the four-way valve 5. A refrigerant passage 15 is connected between the four-way valve 5 and the indoor heat exchanger 8 of the refrigeration cycle. Between the refrigerant passage 15 and the indoor heat exchanger 8, a first opening / closing valve 17 for flowing the refrigerant to the indoor side heat exchanger 8 side is provided, and in parallel with the refrigerant passage 15 and the first opening / closing valve 17, A second opening / closing valve 18 for flowing the refrigerant is provided on the four-way valve 5 side.
上記冷媒通路15を設けた前面パネル11には、パネル温
度センサ19が設けられ、また、室内側熱交換器８には温
度センサ20が設けられている。パネル温度センサ19およ
び温度センサ20の検出信号は図示しない制御装置に送ら
れ、この制御装置より発する制御信号で圧縮機４を制御
するようにしている。この制御装置は、冷暖房運転時に
パネル温度センサ19により検出された前面パネル温度が
所定値になるように圧縮機４を制御する。A panel temperature sensor 19 is provided on the front panel 11 provided with the refrigerant passage 15, and a temperature sensor 20 is provided on the indoor heat exchanger 8. The detection signals of the panel temperature sensor 19 and the temperature sensor 20 are sent to a control device (not shown), and the compressor 4 is controlled by a control signal generated from this control device. This control device controls the compressor 4 so that the front panel temperature detected by the panel temperature sensor 19 during cooling / heating operation becomes a predetermined value.
すなわち、制御装置は、圧縮機が通常タイプのもので
あれば圧縮機をオン、オフ制御し、圧縮機がインバータ
形のものであれば圧縮機を周波数制御する。冷凍サイク
ルがパネル運転のみの場合、暖房運転時では冷凍サイク
ルの冷媒の圧力の高圧上昇のおそれがあり、冷房運転時
では冷凍サイクルの冷媒の圧力の異常低下のおそれがあ
り、これを防止するため、パネル温度センサ19と温度セ
ンサ20で冷凍サイクルの冷媒の温度を感知し、たとえ
ば、暖房運転時なら約60℃、冷房運転時なら０℃になる
と、パネル＋温風運転、パネル＋冷風運転になる。That is, the control device controls ON / OFF of the compressor if the compressor is a normal type, and controls the frequency of the compressor if the compressor is an inverter type. When the refrigeration cycle is only panel operation, there is a risk that the refrigerant pressure in the refrigeration cycle will rise to a high pressure during heating operation, and there will be an abnormal decrease in the refrigerant pressure in the refrigeration cycle during cooling operation. The temperature of the refrigerant in the refrigeration cycle is detected by the panel temperature sensor 19 and the temperature sensor 20. For example, when the temperature is about 60 ° C during the heating operation and 0 ° C during the cooling operation, the panel + warm air operation and the panel + cold air operation are performed. Become.
次に作用を説明する。 Next, the operation will be described.
暖房運転時、温風＋パネル運転の場合には、開閉弁17
が開き、開閉弁18が閉じた状態にあり、第４図に示すよ
うに、冷媒は四方弁５→冷媒通路15→第１開閉弁17→室
内側熱交換器８の経路で流れるので、冷媒通路15は、室
内側熱交換器８と同様に凝縮器として作用する。On-off valve 17 for heating operation and hot air + panel operation
Is opened and the on-off valve 18 is closed. As shown in FIG. 4, the refrigerant flows through the four-way valve 5 → refrigerant passage 15 → first on-off valve 17 → indoor heat exchanger 8 so that the refrigerant The passage 15 functions as a condenser similarly to the indoor heat exchanger 8.
したがって、前面パネル11は高温冷媒により加温さ
れ、輻射パネルを構成する。送風機16により吸込口12か
ら吸込まれた空気は、前面パネル11と室内側熱交換器８
との間の吸込側送風路を通って、室内側熱交換器８によ
り熱交換され、温風となった空気流が、室内側熱交換器
８と吹出口３との間の吹出側送風路を通って、吹出口３
から室内に吹出される。Therefore, the front panel 11 is heated by the high-temperature refrigerant and constitutes a radiation panel. The air sucked from the suction port 12 by the blower 16 is used for the front panel 11 and the indoor heat exchanger 8
The airflow that has been heat-exchanged by the indoor heat exchanger 8 and becomes warm air through the suction-side airflow passage between the indoor heat exchanger 8 and the outlet 3 Through the outlet 3
Is blown indoors.
パネルのみの運転の場合には、送風機16の室内ファン
を停止または超停速にし、温風暖房機能を停止し、冷媒
通路15を流れる高温冷媒により前面パネル11を加温す
る。前面パネル11は、自然対流熱伝達と輻射熱伝達によ
り放熱されるので、熱交換性能が小さく、前面パネル11
の温度は相当上昇するが、前面パネル11にはパネル温度
センサ19が設けられていて、パネル温度センサ19の検出
信号を受ける図示しない制御装置により圧縮機の周波数
（HZ）が制御され、前面パネル11の温度上昇を予め定め
た設定値の範囲内にする。圧縮機が通常タイプであれ
ば、オン、オフ動作により前面パネルの温度上昇を制御
する。これにより、暖房運転時における冷凍サイクルの
冷媒の圧縮の高圧上昇を防ぐことができる。In the case of the panel-only operation, the indoor fan of the blower 16 is stopped or superstopped, the warm air heating function is stopped, and the front panel 11 is heated by the high-temperature refrigerant flowing through the refrigerant passage 15. Since the front panel 11 is radiated by natural convection heat transfer and radiant heat transfer, the heat exchange performance is small and the front panel 11
Although the temperature of the compressor rises considerably, the front panel 11 is provided with the panel temperature sensor 19, and the frequency (H Z ) of the compressor is controlled by the control device (not shown) that receives the detection signal of the panel temperature sensor 19, The temperature rise of panel 11 is set within the range of a preset value. If the compressor is a normal type, it controls the temperature rise of the front panel by turning on and off. As a result, it is possible to prevent a high pressure increase in the compression of the refrigerant in the refrigeration cycle during the heating operation.
冷房運転時、冷風＋パネル運転の場合には、第５図に
示すように、冷媒は室内側熱交換器８→第１開閉弁17→
冷媒通路15→四方弁５の経路で流れ、前面パネル11が冷
却されることになる。前面パネル11の温度はパネル温度
センサ19により検出され、圧縮機を制御することで前面
パネルへの凍結を防ぐことができる。During the cooling operation and the cold air + panel operation, as shown in FIG. 5, the refrigerant is the indoor heat exchanger 8 → the first opening / closing valve 17 →
The refrigerant passage 15 flows through the four-way valve 5 to cool the front panel 11. The temperature of the front panel 11 is detected by the panel temperature sensor 19, and it is possible to prevent freezing to the front panel by controlling the compressor.
パネルのみの運転の場合には、室内ファンを止め、冷
風冷房機能を停止し、冷媒通路15を流れる低温冷媒によ
り前面パネル11を冷却する。前面パネル11は、自然対流
と輻射により放熱するので、前面パネル11の温度は相当
下るが、前面パネル11にはパネル温度センサ19が設けら
れていて、パネル温度センサ19の検出信号を受ける図示
しない制御装置により圧縮機の周波数（HZ）が制御さ
れ、前面パネル11の温度低下を予め定めた設定値の範囲
内にする。これにより、冷房運転時における冷凍サイク
ルの冷媒の圧力の異常低下を防ぐことができる。In the case of the panel-only operation, the indoor fan is stopped, the cooling air cooling function is stopped, and the front panel 11 is cooled by the low-temperature refrigerant flowing through the refrigerant passage 15. Since the front panel 11 radiates heat by natural convection and radiation, the temperature of the front panel 11 is considerably lowered, but the front panel 11 is provided with a panel temperature sensor 19 and receives a detection signal of the panel temperature sensor 19 (not shown). The frequency (H Z ) of the compressor is controlled by the control device so that the temperature drop of the front panel 11 falls within the range of a preset set value. As a result, it is possible to prevent an abnormal decrease in the pressure of the refrigerant in the refrigeration cycle during the cooling operation.
上記実施例では、室内ファンを停止することで温風暖
房機能、冷風暖房機能を停止させたが、冷媒通路に別に
弁装置を設け、冷媒を熱交換器８か冷媒通路に流すよう
にしてもよい。In the above-described embodiment, the warm air heating function and the cold air heating function are stopped by stopping the indoor fan, but a separate valve device may be provided in the refrigerant passage to allow the refrigerant to flow into the heat exchanger 8 or the refrigerant passage. Good.
なお、空気調和機としてスプリット形エアコンについ
て説明したが、一体形エアコンであってもよいのはもち
ろんである。Although the split air conditioner has been described as the air conditioner, it goes without saying that it may be an integrated air conditioner.
以上述べたように本発明によれば、室内側熱交換器を
有する室内側ユニットの前面パネルに冷媒通路を設け、
この冷媒通路を前記四方弁と室内側熱交換器との間に介
設し、前記前面パネルに前面パネルの温度を検出する温
度センサを設けるとともに、冷凍サイクルをパネルのみ
によるパネル運転と熱交換器とパネルによる温風プラス
パネル運転に制御する制御装置を具備し、この制御装置
が、パネル運転時に前記温度センサにより検出されるパ
ネル温度が所定値になったら冷凍サイクルをパネル運転
から温風プラスパネル運転に移行するように圧縮機を制
御することで、冷凍サイクルの冷媒圧力の異常上昇や異
常低下を防止でき、圧縮機の運転信頼性が向上する。According to the present invention as described above, the refrigerant passage is provided in the front panel of the indoor unit having the indoor heat exchanger,
This refrigerant passage is provided between the four-way valve and the indoor heat exchanger, the front panel is provided with a temperature sensor for detecting the temperature of the front panel, and the refrigeration cycle is operated only by the panel and the heat exchanger. And a control device for controlling the hot air plus panel operation by the panel, and the control device starts the refrigeration cycle from the panel operation to the hot air plus panel operation when the panel temperature detected by the temperature sensor reaches a predetermined value during the panel operation. By controlling the compressor so as to shift to the operation, it is possible to prevent the refrigerant pressure in the refrigeration cycle from abnormally increasing or decreasing, and improve the operational reliability of the compressor.
第１図は本発明による空気調和機の室内側ユニットの斜
視図、第２図は同断面図、第３図は本発明による空気調
和機の冷凍サイクル図、第４図および第５図は運転制御
を示す図、第６図は従来の空気調和機を示す斜視図、第
７図は同冷凍サイクル図である。 ４……圧縮機、５……四方弁、６……室外側熱交換器、
７……減圧装置、８……室内側熱交換器、11……前面パ
ネル、15……冷媒通路、17……開閉弁、18……開閉弁、
19……パネル温度センサ。FIG. 1 is a perspective view of an indoor unit of an air conditioner according to the present invention, FIG. 2 is a sectional view of the same, FIG. 3 is a refrigeration cycle diagram of the air conditioner according to the present invention, and FIGS. FIG. 6 is a perspective view showing a conventional air conditioner, and FIG. 7 is a refrigeration cycle diagram thereof. 4 ... compressor, 5 ... four-way valve, 6 ... outdoor heat exchanger,
7 ... Pressure reducing device, 8 ... Indoor heat exchanger, 11 ... Front panel, 15 ... Refrigerant passage, 17 ... Open / close valve, 18 ... Open / close valve,
19 ... Panel temperature sensor.
Claims (1)
置および室内側熱交換器を順次配管により接続し、四方
弁の切換えにより冷暖房運転を行なう冷凍サイクルを備
えた空気調和機において、前記室内側熱交換器を有する
室内側ユニットの前面パネルに冷媒通路を設け、この冷
媒通路を前記四方弁と室内側熱交換器との間に介設し、
前記前面パネルに前面パネルの温度を検出する温度セン
サを設けるとともに、冷凍サイクルをパネルのみによる
パネル運転と熱交換器とパネルによる温風プラスパネル
運転に制御する制御装置を具備し、この制御装置は、パ
ネル運転時に前記温度センサにより検出されるパネル温
度が所定値になったら冷凍サイクルをパネル運転から温
風プラスパネル運転に移行することを特徴とする空気調
和機。1. An air conditioner comprising a refrigeration cycle in which a compressor, a four-way valve, an outdoor heat exchanger, a pressure reducing device and an indoor heat exchanger are sequentially connected by piping, and a cooling / heating operation is performed by switching the four-way valve. A refrigerant passage is provided on the front panel of the indoor unit having the indoor heat exchanger, and the refrigerant passage is provided between the four-way valve and the indoor heat exchanger,
The front panel is provided with a temperature sensor for detecting the temperature of the front panel, and a control device for controlling the refrigeration cycle to operate the panel only by the panel, the heat exchanger, and the hot air plus panel operation by the panel is provided. An air conditioner that shifts the refrigeration cycle from panel operation to warm air plus panel operation when the panel temperature detected by the temperature sensor reaches a predetermined value during panel operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61073471A JP2525769B2 (en) | 1986-03-31 | 1986-03-31 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61073471A JP2525769B2 (en) | 1986-03-31 | 1986-03-31 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62228844A JPS62228844A (en) | 1987-10-07 |
| JP2525769B2 true JP2525769B2 (en) | 1996-08-21 |
Family
ID=13519220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61073471A Expired - Fee Related JP2525769B2 (en) | 1986-03-31 | 1986-03-31 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2525769B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0725568Y2 (en) * | 1988-02-22 | 1995-06-07 | 株式会社東芝 | Air conditioner with radiant panel |
| CA2041610A1 (en) * | 1990-05-04 | 1991-11-05 | Elisabeth S. Papazoglou | Process for the preparation of polyamide blends having improved low temperature properties |
| IT1397613B1 (en) | 2009-07-16 | 2013-01-18 | Termal Srl | IRRADIATION HEATING DEVICE |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5929783B2 (en) * | 1978-01-11 | 1984-07-23 | 松下電器産業株式会社 | Air conditioning equipment |
| JPS60191852U (en) * | 1984-05-29 | 1985-12-19 | 株式会社東芝 | Heat pump floor heating system |
-
1986
- 1986-03-31 JP JP61073471A patent/JP2525769B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62228844A (en) | 1987-10-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |