JPS63108175A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPS63108175A JPS63108175A JP25393886A JP25393886A JPS63108175A JP S63108175 A JPS63108175 A JP S63108175A JP 25393886 A JP25393886 A JP 25393886A JP 25393886 A JP25393886 A JP 25393886A JP S63108175 A JPS63108175 A JP S63108175A
- Authority
- JP
- Japan
- Prior art keywords
- compressor
- heat exchanger
- air conditioner
- outdoor heat
- switching valve
- 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
- 238000010438 heat treatment Methods 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 16
- 238000010257 thawing Methods 0.000 claims description 14
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000555825 Clupeidae Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000019512 sardine Nutrition 0.000 description 1
Landscapes
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は能力可変型圧縮機を有する１台の室外ユニット
に、複数台の室内ユニットを接続した冷暖房可能な多室
型空気調和機に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a multi-room air conditioner capable of cooling and heating, in which a plurality of indoor units are connected to one outdoor unit having a variable capacity compressor. .
（＝） 従来の技術
冷暖房可能な多室型空気調和機において、暖房運転時に
室外熱交換器に着霜すると、四方切換弁を切換えて除霜
運転を行なうようにしているが、この除霜運転の時間！
短鰯させろために、除霜運転中は能力可変型圧縮機を大
能力で運転させるよ５Ｖｃｌ、４＝ものか、実公昭５１
−３７２６５号公報で提示されている。(=) Conventional technology In multi-room air conditioners capable of cooling and heating, when frost forms on the outdoor heat exchanger during heating operation, the four-way switching valve is switched to perform defrosting operation. time of!
In order to shorten the sardines, the variable capacity compressor is operated at high capacity during defrosting operation.
It is presented in Publication No.-37265.
四 発明が解決しようとｊる問題点
上記公報で提示の装置は、暖房運転時に室外熱交換器に
着霜すると、先づ四方切換弁な切換え、この切換えによ
って圧縮機の吐出側圧力か下がるのを圧力スイッチで検
出して圧縮機を大能力運転（２極運転）に下るものであ
るため、着霜を検出した時点から圧縮機が太能力達転に
なる迄の間に時間遅れがあり除１６時間か長くなる問題
点を有していた。又、圧力スイッチケ用いていたため、
製造コストが高くなる問題点を有していた。4. Problems to be Solved by the Invention In the device presented in the above publication, when frost forms on the outdoor heat exchanger during heating operation, the four-way switching valve is first switched, and this switching causes the pressure on the discharge side of the compressor to drop. Since frost is detected by a pressure switch and the compressor goes into high-capacity operation (dual-pole operation), there is a time delay between the time when frost formation is detected and the time when the compressor reaches high-capacity operation. It had the problem that it took about 16 hours. Also, since a pressure switch was used,
This had the problem of high manufacturing costs.
本発明はかかる問題点を解決した空気調和機を提供する
ものである。The present invention provides an air conditioner that solves these problems.
に）問題点を解決ｊるための手段
本発明は空気調和機の除霜制御装置に、暖房運転時に室
外熱交換器の着霜を検出する着霜検出手段と、この検出
手段の着霜信号により四方切換弁ン除霜サイクルに切換
えろと共に圧縮機を室内ユニットの運転台数にかかわら
ず大能力で運転させる制御手段とを設シするようにした
ものである。B) Means for solving the problem The present invention provides a defrosting control device for an air conditioner, which includes a frost detection means for detecting frost formation on an outdoor heat exchanger during heating operation, and a frost formation signal from this detection means. In addition to switching to the defrosting cycle using the four-way switching valve, a control means is provided for operating the compressor at high capacity regardless of the number of operating indoor units.
（ホ）作用
能力可変型圧縮機として２極と４極とに切換わる極数変
換型圧縮機を用い、且つ２台の室内ユニットを有する空
気調和機に？いて、圧縮機は、１台の室内ユニットが冷
暖房運転する時は４極（小能力）運転され、２台の室内
ユニットが冷暖房運転する時は２極（大能力）運転され
ろ。かかる暖房運転中に室外熱交換器にＭ霜すると、着
霜検出手段から着霜信号が出力されてこの信号か制御手
段に入力される。制御手段はこの入力により四方切換弁
を切換えて暖房サイクルから除霜（冷房）サイクルに切
換えると共に圧縮機が４極運転されている場合は２極運
転に切換え、又、２極運転されている場合はそのまま２
極で運転させる。このように、ｔ￥ｆＫ１台の室内ユニ
ットの暖房運転時においても、圧縮機は２極で運転され
、しかもこの２極への切り換わりは四方切換弁が切換わ
ろ除霜運転開始時と同時に行なわれろため、圧縮機の大
能力運転で除霜が速やかに行なわれる。(e) For an air conditioner that uses a variable-pole compressor that can switch between two and four poles as a variable capacity compressor and has two indoor units? The compressor is operated with 4 poles (low capacity) when one indoor unit performs cooling/heating operation, and with 2 poles (high capacity) when two indoor units perform cooling/heating operation. When M frost occurs on the outdoor heat exchanger during such heating operation, a frost formation signal is outputted from the frost formation detection means and this signal is inputted to the control means. Based on this input, the control means switches the four-way switching valve to switch from the heating cycle to the defrosting (cooling) cycle, and also switches the compressor to 2-pole operation if it is operated with 4 poles, or switches it to 2-pole operation if it is operated with 2 poles. remains as is 2
Drive at poles. In this way, even during the heating operation of one indoor unit, the compressor is operated at two poles, and this switching to two poles is done at the same time as the four-way selector valve switches and the defrosting operation starts. As a result, defrosting is quickly performed by operating the compressor at high capacity.
（へ）実施例
第１図は本発明の実施例を示す空気調和機の説明図であ
り、１１１は２極端子（２）と４極端子（３）とを有す
る極数変換型圧縮機、（４）は冷房（除ネ″ｉ）サイク
ルと暖房サイクルとに切換える四方切換弁、（５）は室
外熱交換器、（６）は膨張弁からなる減圧素子で、これ
ら機器が１台の室外ユニット（７）に内蔵されている。(F) Embodiment FIG. 1 is an explanatory diagram of an air conditioner showing an embodiment of the present invention, and 111 is a pole conversion type compressor having a two-pole terminal (2) and a four-pole terminal (3); (4) is a four-way switching valve that switches between the cooling (removal of energy) cycle and the heating cycle, (5) is an outdoor heat exchanger, and (6) is a pressure reducing element consisting of an expansion valve. It is built into the unit (7).
（８ａ）（８ｂ）は夫々室内熱交換器（９ａ）（９ｂ）
と電磁開閉弁（１０ａ）（１０ｂ）とを内蔵した室内ユ
ニットで１図示の如（、室外ユニット（力に対し並列接
続されている。(8a) and (8b) are indoor heat exchangers (9a and 9b) respectively.
An indoor unit with built-in electromagnetic on-off valves (10a) and (10b) is connected in parallel to the outdoor unit (as shown in the figure).
Ｈに夫々の室温サーモ等空調状態検出部（１２ａ ）（
１２ｂ）から信号を入力し７て電磁開閉弁（１０ａ）（
１０ｂ）を開閉する運転制御装置、（＋３７は暖房運転
時にサーミスタα４］から信号を入力して室外熱交換器
（５）の溜箱を検出するＭ’＃検出手段、Ｑ５１はこの
着霜検出手段から出力かあるとこの着霜信号により四方
切換弁（４）乞切換えると共に運転制御装置（Ｉｌｌか
らの入力信号を読み込んで室内ユニ７ ） （８ａ）（
８ｂ）の運転台数が１台の時は４極端子（３）から２極
端子（２）へ接片Ｕ（へ）を切換え、又、室内ユニット
（８ａ）（８ｂ）の運転台数が２台の時は２極端子（２
）に接片（１６１をそのまま維持する制御手段であり、
これら着霜検出手段ａふと制御手段ａ９とを有する除霜
制御装置０７）と、運転制御装＋ｔ ａ １１とはマイ
クロコンピュータで構成されている。Each room temperature thermometer etc. air conditioning state detection unit (12a) (
12b), and then input the signal from the solenoid on-off valve (10a) (7).
10b)) an operation control device that opens and closes (+37 is the thermistor α4 during heating operation); M'# detection means that detects the storage box of the outdoor heat exchanger (5) by inputting a signal from the thermistor α4 during heating operation; Q51 is the frost detection means When there is an output from the frosting signal, the four-way switching valve (4) is switched and the input signal from the operation control device (Ill is read and the indoor unit 7) (8a) (
When the number of operating units of 8b) is one, switch the contact piece U from the 4-pole terminal (3) to the 2-pole terminal (2), and also, when the number of operating indoor units (8a) and (8b) is 2. When , it is a two-pole terminal (2
) is a control means for maintaining the contact piece (161) as it is,
The defrosting control device 07) having the frost detection means a and the control means a9 and the operation control device +t a 11 are constituted by a microcomputer.
次に本発明の制御動作を第２図に基づいて説明する。暖
房運転時、例えば、一方の室内ユニット（８ａ）の空調
状態検出部（１２ａ）からのみ運転制御装置丘旧）に運
転信号か入力されると、′電磁開閉弁（１０ａ）か開さ
、且つこの運転制御装置からの出力信号を受けて制御手
段α９から信号が出力されて接片ｔＩ６１が４極端子（
３）へ投入されるので、圧縮機（１）は４極（小能力）
運転され、圧縮機（１）から吐出された冷媒が四方切換
弁（４（−室内熱交換器（９ａ）−電磁開閉弁（１０ａ
）−減圧素子（６）−室外熱交換器（５）−四方切換弁
（４）−圧縮機（１）と循環する一室暖房サイクルが形
成される。Next, the control operation of the present invention will be explained based on FIG. During heating operation, for example, when an operation signal is input to the operation control device only from the air conditioning state detection section (12a) of one indoor unit (8a), the electromagnetic on-off valve (10a) is opened, and In response to the output signal from the operation control device, a signal is output from the control means α9, and the contact piece tI61 is connected to the quadrupole terminal (
3), so the compressor (1) has 4 poles (small capacity).
The refrigerant discharged from the compressor (1) is transferred to the four-way switching valve (4 (- indoor heat exchanger (9a) - electromagnetic on-off valve (10a)).
) - pressure reduction element (6) - outdoor heat exchanger (5) - four-way switching valve (4) - compressor (1) A one-room heating cycle is formed.
かかる運転中に室外熱交換器（５）に溜箱すると、Ｗ８
％検量検出（１３１からＭ霜伯号が出力されてこの信号
が制御手段（ｌωに入力される。制御手段α５）はこの
入力により四方切換弁（４）の電磁コイルＹＯＦＦして
四方切換弁ｔ４１ ’に破線状態に切換えると共に接片
（１６１を２極端子（２）に投入して圧縮機（１）を２
極（大能力）運転に切換え、圧縮機ｆｉｌから吐出され
た冷媒が四方切換弁（４）−室外熱交換器（５）−減圧
素子（６）−電磁開閉弁（１０ａ）−室内熱交換器（９
ａ）−四方切換弁（４）−圧縮機（１）と循環する除霜
サイクルが形成される。When the outdoor heat exchanger (5) is placed in a storage box during such operation, W8
% calibration detection (131 outputs M frost number, and this signal is input to the control means (lω. Control means α5) uses this input to turn off the electromagnetic coil of the four-way switching valve (4) and switch the four-way switching valve t41 ', switch to the broken line state, and put the contact piece (161) into the two-pole terminal (2) to turn the compressor (1) into the two-pole state.
Switching to extreme (high capacity) operation, the refrigerant discharged from the compressor fil flows through the four-way switching valve (4) - outdoor heat exchanger (5) - pressure reducing element (6) - electromagnetic shut-off valve (10a) - indoor heat exchanger (9
A defrost cycle is formed which circulates a) - four-way valve (4) - compressor (1).
このように圧縮機（１）は着霜信号が出ると同時Ｏで２
極に切換わって大能力で運転されるので室外熱交換器（
５）ビ短時間で除霜し、除霜解除信号が着霜検出手段Ｏ
Ｊから出力されると四方切換弁（４）の電磁コイルをＯ
Ｎｔ、て四方切換弁（４）を実線状態に切換えると共に
接片（ｌｂ）’＆４極端子（３）に投入して圧縮機ｉｌ
＋を４極（小能力）運転に切換え、上述した一室暖房サ
イクルに復帰する。In this way, the compressor (1) is turned on at the same time as the frosting signal is output.
The outdoor heat exchanger (
5) Defrost in a short time, and the defrost release signal is detected by the frost detection means O.
When the output is output from J, the electromagnetic coil of the four-way switching valve (4) is turned to O.
Nt, switch the four-way switching valve (4) to the solid line state, and connect the contact piece (lb)'& 4-pole terminal (3) to turn on the compressor.
+ is switched to 4-pole (small capacity) operation and returns to the above-mentioned one-room heating cycle.
又１両方の室内ユニット（８ａ）（８ｂ）の空調状態検
出部（１２ａ）（１２ｂ）から運転制御装置μ】）に運
転信号が入力されると、電磁開閉弁（１０ａ）（１０ｂ
）が開き、且つこの運転制御装置からの出力１を号乞受
けて制御手段（１９から信号が出力されて接片旧が２極
端子（２）へ投入されるので、圧縮機＋１＋は２極（大
能力）運転され、圧縮機（１）から吐出された冷媒が四
方切換弁（４）−室内熱交換器（９ａ）（９ｂ）−電磁
開閉弁（１０ａ）（１０ｂ）−減圧素子（６）−室外熱
′９：換器（５）−四方切換弁（４）−圧縮機（１）と
循環する二基暖房サイクルか形成される。In addition, when an operation signal is input from the air conditioning state detection parts (12a) (12b) of both indoor units (8a) (8b) to the operation control device μ]), the electromagnetic on-off valves (10a) (10b
) opens, and in response to the output 1 from this operation control device, a signal is output from the control means (19) and the old contact piece is put into the two-pole terminal (2), so the compressor +1+ is connected to the two-pole terminal (2). (Large capacity) operation, the refrigerant discharged from the compressor (1) - four-way switching valve (4) - indoor heat exchanger (9a) (9b) - electromagnetic on-off valve (10a) (10b) - pressure reducing element (6 ) - Outdoor heat '9: A two-unit heating cycle is formed, which circulates between the exchanger (5) - the four-way switching valve (4) - the compressor (1).
かかる運転中に室外熱交換器（５］ ＶＣ”Ａｔ ’ｔ
Ｍすると、Ｎ霜検出手段αつから着霜信号が出力されて
この信号が制御手段αりに入力されろ。制御手段α■は
この入力により四方切換弁（４）の電磁コイルｖＯＦＦ
ｕて四方切換弁（４）を破線状態に切換えると共に接片
ｕ６Ｊを２極端子（２）に投入保持させて圧縮機（１）
を２極のままで大能力運転させろことにより、圧縮機（
１）から吐出された冷媒が四方切換弁（４）−室外熱交
換器（５）−減圧素子＋６＋−４を磁開閉弁（１０ａ）
（１０ｂ）−室内熱交換器（９ａ）（９ｂ）−四方切換
弁（４）−圧縮機ｆｉｌと循環する除霜サイクルが形成
されろ。During such operation, the outdoor heat exchanger (5) VC"At 't
When M occurs, a frost formation signal is outputted from the N frost detection means α, and this signal is inputted to the control means α. The control means α■ turns off the electromagnetic coil v of the four-way switching valve (4) by this input.
Switch the four-way selector valve (4) to the broken line state using u, and connect the contact piece u6J to the two-pole terminal (2) and hold it there to connect the compressor (1).
By operating the compressor at high capacity with two poles, the compressor (
1) The refrigerant discharged from the four-way switching valve (4) - the outdoor heat exchanger (5) - the pressure reducing element +6+-4 is connected to the magnetic on-off valve (10a).
(10b) - Indoor heat exchanger (9a) (9b) - Four-way switching valve (4) - A defrosting cycle circulating with compressor fil is formed.
このように圧縮機ｉｌｌは２極のままで大能力運転され
るので室外熱交換器（５）が短時間で除霜され、除霜か
解除されると四方切換弁（４）が実線状態に切換わり、
上述した二基暖房サイクルに復帰する。In this way, the compressor ill is operated at high capacity with two poles, so the outdoor heat exchanger (5) is defrosted in a short time, and when the defrost is released, the four-way selector valve (4) changes to the solid line state. Switching,
The system returns to the dual heating cycle described above.
又、冷房時においても圧縮機（１）は−室運転時に４極
で、二基運転時に２極で運転されろ。尚、冷房サイクル
は上述した除１■サイクルと同じである為、説明は省略
する。Also, during cooling, the compressor (1) is operated with four poles when operating in a negative room, and with two poles when operating in a double room. It should be noted that the cooling cycle is the same as the above-mentioned 1/2 cycle, so a description thereof will be omitted.
尚、上記実施例では２台の室内ユニツ） （８ａ）（ｓ
ｂ）？：対象とした為、能力可変型圧縮＋ａｔ＋＋とじ
て大能力と小能力の二段に切換わろ極数変換型圧縮機を
用いたか、室内ユニットの台数に応じてアンローダ型や
周波数変換型（インバータ）等を用いても良い。In the above embodiment, two indoor units) (8a) (s
b)? : Since the target is variable capacity compression + AT++, a pole conversion type compressor that switches to two stages of large capacity and small capacity is used, or an unloader type or frequency conversion type (inverter) is used depending on the number of indoor units. etc. may also be used.
（ト） 発明の効果
本発明によれば、除１ｉ運転時は室内ユニットの運転台
数にかかわらず圧縮機を大能力で運転させると共にこの
除霜運転をＮ鞘検出と同時に開始するよ５にしたので、
室内ユニットが１台で運転されている時も除霜時間を短
縮することができ、しかもこの圧縮機の能力切換え信号
を室内ユニットの運転を制御するマイクロコンピュータ
から出力させることにより能力切換えの為の専用装置を
用いる必要がなく、製造コストのアップを抑えることが
できる。(G) Effects of the Invention According to the present invention, during the defrosting operation, the compressor is operated at high capacity regardless of the number of indoor units in operation, and this defrosting operation is started at the same time as the N sheath detection. So,
Defrosting time can be shortened even when only one indoor unit is operated, and by outputting the compressor capacity switching signal from the microcomputer that controls the operation of the indoor unit, it is possible to shorten the defrosting time. There is no need to use dedicated equipment, and an increase in manufacturing costs can be suppressed.
図面は本発明の実施例を示すもので、第１図は空気調和
機の説明図、第２図はその制御動作を示すフローチャー
トである。
ｉｌ＋・・・能力可変型圧縮機、 （４）・・・四方切
換弁、（５）・・・室外熱交換器、 （７）・・・室外
ユニット、（８ａ）（８ｂ）−室内ユニット、 （９
ａ）（９ｂ）・・・室内熱交換器、 （１３１・・・着
霜検出手段、 ０５）・・・制御手段、（１Ｂ・・・除
１省制御装置。The drawings show an embodiment of the present invention, and FIG. 1 is an explanatory diagram of an air conditioner, and FIG. 2 is a flowchart showing its control operation. il+... variable capacity compressor, (4)... four-way switching valve, (5)... outdoor heat exchanger, (7)... outdoor unit, (8a) (8b) - indoor unit, (9
a) (9b)... Indoor heat exchanger, (131... Frost formation detection means, 05)... Control means, (1B... 1-saving control device.
Claims (2)
を内蔵した１台の室外ユニットと、室内熱交換器を内蔵
した複数台の室内ユニットとを接続し、四方切換弁の切
換えにより冷房（除霜）サイクルと暖房サイクルとを形
成するようにした冷暖房可能な空気調和機において、暖
房運転時に室外熱交換器の着霜を検出する着霜検出手段
と、この検出手段の着霜信号により四方切換弁を除霜サ
イクルに切換えると共に圧縮機を室内ユニットの運転台
数にかかわらず大能力で運転させる制御手段とを有する
除霜制御装置を備えたことを特徴とする空気調和機。(1) Connect one outdoor unit with a built-in variable capacity compressor, four-way switching valve, and outdoor heat exchanger to multiple indoor units with built-in indoor heat exchangers, and switch the four-way switching valve. In an air conditioner that can be cooled and heated to form a cooling (defrosting) cycle and a heating cycle, there is provided a frost detection means for detecting frost formation on an outdoor heat exchanger during heating operation, and a frost formation detection means for detecting frost formation on the outdoor heat exchanger during heating operation. An air conditioner comprising a defrost control device having a control means that switches a four-way selector valve to a defrost cycle in response to a signal and operates a compressor at high capacity regardless of the number of operating indoor units.
請求の範囲第１項記載の空気調和機。(2) The air conditioner according to claim 1, wherein the variable capacity compressor is a pole conversion type compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25393886A JPS63108175A (en) | 1986-10-24 | 1986-10-24 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25393886A JPS63108175A (en) | 1986-10-24 | 1986-10-24 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63108175A true JPS63108175A (en) | 1988-05-13 |
Family
ID=17258094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25393886A Pending JPS63108175A (en) | 1986-10-24 | 1986-10-24 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63108175A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5194156A (en) * | 1975-02-18 | 1976-08-18 | ||
| JPS5765553A (en) * | 1980-10-07 | 1982-04-21 | Daikin Ind Ltd | Heat pump type multi-chamber air conditioner |
-
1986
- 1986-10-24 JP JP25393886A patent/JPS63108175A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5194156A (en) * | 1975-02-18 | 1976-08-18 | ||
| JPS5765553A (en) * | 1980-10-07 | 1982-04-21 | Daikin Ind Ltd | Heat pump type multi-chamber air conditioner |
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