JPH0248739U

JPH0248739U -

Info

Publication number: JPH0248739U
Application number: JP12733888U
Authority: JP
Priority date: 1988-09-30
Filing date: 1988-09-30
Publication date: 1990-04-04

Description

[Brief explanation of drawings]

第１図は本考案の一実施例の制御ブロツク図、
第２図は同じく制御フローチヤートである。第３
図はヒートポンプ式空気調和機の一例の冷媒回路
図である。１……圧縮機、２……四方切換弁、３……室内
側熱交換器、４……絞り装置、５……室外側熱交
換器、６……室内フアン、７……室外フアン、８
……温度センサ（着霜検知手段）、９……温度セ
ンサ（除霜終了温度検知手段）、１０……除霜禁
止タイマ、１２……除霜開始温度設定手段、１５
……比較手段、１６……除霜指令出力手段、１７
……暖房指令出力手段、１９……除霜終了温度設
定手段、２２……比較手段、２３……除霜終了指
令出力手段、２４……除霜終了タイマ、２６……
強制除霜終了指令出力手段、２７……除霜回数計
、２８……除霜回数設定手段。 FIG. 1 is a control block diagram of an embodiment of the present invention.
FIG. 2 is also a control flowchart. Third
The figure is a refrigerant circuit diagram of an example of a heat pump type air conditioner. 1... Compressor, 2... Four-way switching valve, 3... Indoor heat exchanger, 4... Throttle device, 5... Outdoor heat exchanger, 6... Indoor fan, 7... Outdoor fan, 8
...Temperature sensor (frost detection means), 9...Temperature sensor (defrost end temperature detection means), 10...Defrost prohibition timer, 12...Defrost start temperature setting means, 15
... Comparison means, 16 ... Defrosting command output means, 17
... Heating command output means, 19 ... Defrost end temperature setting means, 22 ... Comparison means, 23 ... Defrost end command output means, 24 ... Defrost end timer, 26 ...
Forced defrosting end command output means, 27... defrosting frequency counter, 28... defrosting frequency setting means.

Claims

[Scope of utility model registration request]

It is equipped with a compressor, a four-way switching valve, an indoor heat exchanger, a throttling device, and an outdoor heat exchanger. When frost is detected, defrosting operation is started, and then the defrosting limit time set in the defrosting end timer elapses or the temperature detected by the outdoor heat exchanger temperature detection means reaches the defrosting end temperature. In a heat pump type air conditioner that is configured to end defrosting operation and return to heating operation when the defrosting timer reaches the limit, the defrosting operation returns to heating operation when the defrosting limit time set in the defrosting end timer has elapsed. A heat pump type air conditioner characterized in that a heat pump type air conditioner is provided with a means for not using the defrosting end timer in the next defrosting operation when the defrosting operation occurs a preset number of times in succession. .