JPH0640776U - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH0640776U JPH0640776U JP7654192U JP7654192U JPH0640776U JP H0640776 U JPH0640776 U JP H0640776U JP 7654192 U JP7654192 U JP 7654192U JP 7654192 U JP7654192 U JP 7654192U JP H0640776 U JPH0640776 U JP H0640776U
- Authority
- JP
- Japan
- Prior art keywords
- outdoor
- heat exchanger
- capillary tube
- solenoid valve
- indoor heat
- 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
Abstract
(57)【要約】
【目的】 空気調和機に関し、低外気温度状態でも支障
なく冷房運転を行うことのできる空気調和機を提供する
ことを目的とする。
【構成】 圧縮機、室外側熱交換器、減圧キャピラリー
チューブ、室外側熱交換器を順次連結して冷媒回路を形
成し、減圧キャピラリーチューブに並列に電磁弁とバイ
パスキャピラリーチューブを接続し、室外温度を検出し
室外側送風機の運転を制御する室外サーモスタットのオ
フ接点に電磁弁のコイルを電源に並列に接続し、室外温
度が低下し室外サーモスタットがオフして室外側送風機
を停止すると同時に電磁弁を開き、バイパスキャピラリ
ーチューブにも冷媒を流して室内側熱交換器の温度を上
げることにより、室内側熱交換器の氷結を防ぐようにし
てなることを特徴とする。
(57) [Abstract] [Purpose] It is an object of the present invention to provide an air conditioner that can perform cooling operation without trouble even in a low outside air temperature state. [Composition] A compressor, an outdoor heat exchanger, a pressure reducing capillary tube, and an outdoor heat exchanger are sequentially connected to form a refrigerant circuit, and a solenoid valve and a bypass capillary tube are connected in parallel to the pressure reducing capillary tube to determine the outdoor temperature. The coil of the solenoid valve is connected in parallel to the power supply to the OFF contact of the outdoor thermostat that detects the outside air blower and controls the operation of the outdoor blower, and the outdoor thermostat turns off when the outdoor temperature drops and the outdoor blower is stopped. It is characterized in that the freezing of the indoor heat exchanger is prevented by opening the bypass capillary tube and flowing the refrigerant into the bypass capillary tube to raise the temperature of the indoor heat exchanger.
Description
【０００１】[0001]
本考案は空気調和機に関し、詳しくは低外気温度状態で冷房運転を行う空気調 和機に関するものである。 The present invention relates to an air conditioner, and more particularly to an air conditioner that performs cooling operation in a low outside air temperature state.
【０００２】[0002]
従来、低外気温度状態、例えば21°Ｃ以下の低温状態で、冷房運転を行うと、 室外側熱交換器の効率が上昇して循環する冷媒の温度を下げ、室内側熱交換器の 温度が低下し、除湿した水分が室内側熱交換器のフィンに氷結して室内の冷房運 転が出来なくなる状態が発生している。 この状態を避けるため、通常室外側に取付けられた室外サーモスタットにより 外気温度を検出し、一定温度例えば21°Ｃ以下になると室外側送風機の回転数を 下げるか、または停止するようにして、室外側熱交換器の効率を低下させ冷媒圧 力の低下を防止している。 しかしながら、この方法でも限界があり、室外側送風機の回転を停止しても外 気の自然対流により室外側熱交換器が冷却され、室内側熱交換器の氷結を生じる 場合が発生している。 Conventionally, when the cooling operation is performed in a low outside air temperature state, for example, a low temperature state of 21 ° C or less, the efficiency of the outdoor heat exchanger is increased, the temperature of the circulating refrigerant is lowered, and the temperature of the indoor heat exchanger is reduced. There is a situation in which the dehumidified and dehumidified water freezes on the fins of the indoor heat exchanger, making it impossible to perform indoor cooling operation. In order to avoid this condition, the outdoor thermostat, which is usually installed on the outdoor side, detects the outside air temperature, and when the temperature reaches a certain temperature, for example, 21 ° C or less, the rotation speed of the outdoor blower is reduced or stopped. The efficiency of the heat exchanger is reduced and the reduction of refrigerant pressure is prevented. However, this method is also limited, and even if the rotation of the outdoor blower is stopped, the outdoor heat exchanger is cooled by natural convection of the outside air, which may cause freezing of the indoor heat exchanger.
【０００３】[0003]
本考案は、上記従来の問題点に鑑みなされたもので、低外気温度状態でも室内 側熱交換器の氷結を生じることなく冷房運転を行うことのできる空気調和機を提 供することを目的としている。 The present invention has been made in view of the above conventional problems, and an object thereof is to provide an air conditioner capable of performing a cooling operation without causing freezing of the indoor heat exchanger even in a low outside air temperature state. .
【０００４】[0004]
上記目的を達成するために、減圧キャピラリーチューブと並列に電磁弁とバイ パスキャピラリーチューブを接続し、冷房運転時に該電磁弁を上記室外サーモス タットにより開閉制御するようにした。 In order to achieve the above object, a solenoid valve and a bypass capillary tube are connected in parallel with the pressure reducing capillary tube, and the solenoid valve is controlled to open and close by the outdoor thermostat during cooling operation.
【０００５】[0005]
上記の構成によれば、減圧キャピラリーチューブと並列に電磁弁とバイパスキ ャピラリーチューブを接続し、電磁弁を室外サーモスタットのオフ接点を利用し て、低外気温度で室外サーモスタットが動作し、室外側送風機の電源を切ると同 時に、オフ接点により電磁弁に通電して電磁弁を開き、減圧キャピラリーチュー ブと並列にバイパスキャピラリーチューブを通じて冷媒を流して室内側熱交換器 側の冷媒圧力を上げ、室内側熱交換器の温度の低下を防止した。 According to the above configuration, the solenoid valve and the bypass capillary tube are connected in parallel with the depressurization capillary tube, and the solenoid valve uses the off contact of the outdoor thermostat to operate the outdoor thermostat at a low outdoor air temperature, and the outdoor blower. When the power is turned off, the solenoid valve is energized by the off contact to open the solenoid valve, and the refrigerant is flowed through the bypass capillary tube in parallel with the pressure reducing capillary tube to increase the refrigerant pressure on the indoor heat exchanger side. The temperature of the inner heat exchanger was prevented from decreasing.
【０００６】[0006]
本考案の実施例を添付図面を参照して詳細に説明する。 図１は本考案の冷媒回路図で、圧縮機１の吐出側から室外側熱交換器２に入り 、減圧キャピラリーチューブ３を介して室内側熱交換器４に入り、圧縮機１の吸 込側に戻る回路が形成され、減圧キャピラリーチューブ３と並列に電磁弁５とバ イパスキャピラリーチューブ６が設けられている。 さらに、室外側熱交換器２には外気を送入する室外側送風機７、室内側熱交換 器４には室内空気を循環する室内側送風機８が設けられている。 図２は本考案の室外側の要部電気回路図で、電源に圧縮機１と２台の室外側送 風機７が並列に接続され、一方の室外側送風機７には室外サーモスタット９が直 列に接続され、常温で通電状態にセットされ、オフ接点には電磁弁コイル10が電 源に並列に接続されている。 外気温度が低温状態（21°Ｃ以下）になると、室外サーモスタット９が動作し て一方の室外側送風機７を停止し、同時に電磁弁コイル10に通電し、減圧キャピ ラリーチューブ３と並列にバイパスキャピラリーチューブ６を通じて冷媒を流し 、室内側熱交換器側の冷媒圧力を上げ、室内側熱交換器４の温度の低下を防ぎ、 室内側熱交換器４の氷結を防止して冷房運転を継続することができる。 Embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a refrigerant circuit diagram of the present invention, which enters the outdoor heat exchanger 2 from the discharge side of the compressor 1 and enters the indoor heat exchanger 4 via the pressure reducing capillary tube 3 and the suction side of the compressor 1. A circuit for returning to the above is formed, and a solenoid valve 5 and a bypass capillary tube 6 are provided in parallel with the pressure reducing capillary tube 3. Further, the outdoor heat exchanger 2 is provided with an outdoor blower 7 for feeding the outside air, and the indoor heat exchanger 4 is provided with an indoor blower 8 for circulating the indoor air. FIG. 2 is an electrical circuit diagram of the outdoor side of the present invention. A compressor 1 and two outdoor blowers 7 are connected in parallel to a power source, and an outdoor thermostat 9 is directly connected to one outdoor blower 7. The solenoid valve coil 10 is connected in parallel to the power source at the OFF contact. When the outside air temperature becomes low (21 ° C or lower), the outdoor thermostat 9 operates to stop one of the outdoor blowers 7 and at the same time energize the solenoid valve coil 10 to parallel the depressurization capillary tube 3 with the bypass capillary. Flowing the refrigerant through the tube 6 to increase the refrigerant pressure on the indoor heat exchanger side to prevent the temperature of the indoor heat exchanger 4 from lowering, to prevent the indoor heat exchanger 4 from freezing, and to continue the cooling operation. You can
【０００７】[0007]
以上のように本考案においては、減圧キャピラリーチューブと並列に電磁弁と バイパスキャピラリーチューブを設け、外気温度が低温状態の時に室外サーモス タットにより電磁弁を開き、減圧キャピラリーチューブと並列にバイパスキャピ ラリーチューブに冷媒を流して室内側熱交換器の温度の低下を防ぎ、室内側熱交 換器の氷結による冷房運転の停止を防止することができる。 As described above, in the present invention, the solenoid valve and the bypass capillary tube are provided in parallel with the depressurization capillary tube, the solenoid valve is opened by the outdoor thermostat when the outside air temperature is low, and the bypass capillary tube is placed in parallel with the depressurization capillary tube. It is possible to prevent the temperature of the indoor heat exchanger from lowering by flowing the refrigerant to the inside, and to prevent the cooling operation from being stopped due to the freezing of the indoor heat exchanger.
【図１】本考案の冷媒回路図である。FIG. 1 is a refrigerant circuit diagram of the present invention.
【図２】本考案の室外側の要部電気回路図である。FIG. 2 is an electric circuit diagram of a main part of an outdoor side of the present invention.
１ 圧縮機 ２ 室外側熱交換器 ３ 減圧キャピラリーチューブ ４ 室内側熱交換器 ５ 電磁弁 ６ バイパスキャピラリーチューブ ７ 室外側送風機 ８ 室内側送風機 ９ 室外サーモスタット 10 電磁弁コイル 1 compressor 2 outdoor heat exchanger 3 decompression capillary tube 4 indoor heat exchanger 5 solenoid valve 6 bypass capillary tube 7 outdoor blower 8 indoor blower 9 outdoor thermostat 10 solenoid valve coil
Claims (1)
リーチューブ、室内側熱交換器を順次連結して冷凍サイ
クルを形成し、室外側熱交換器を空冷する室外側送風機
と外気温度により室外側送風機の運転を制御する室外サ
ーモスタットを具えてなる空気調和機において、上記減
圧キャピラリーチューブと並列に電磁弁とバイパスキャ
ピラリーチューブを接続し、冷房運転時に該電磁弁を上
記室外サーモスタットにより開閉制御するようにしてな
ることを特徴とする空気調和機。1. A compressor, an outdoor heat exchanger, a decompression capillary tube, and an indoor heat exchanger are sequentially connected to form a refrigeration cycle, and an outdoor fan for cooling the outdoor heat exchanger and an outdoor air temperature control chamber. In an air conditioner comprising an outdoor thermostat for controlling the operation of the outside blower, a solenoid valve and a bypass capillary tube are connected in parallel with the pressure reducing capillary tube so that the solenoid valve is controlled to be opened and closed by the outdoor thermostat during cooling operation. An air conditioner characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7654192U JPH0640776U (en) | 1992-11-06 | 1992-11-06 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7654192U JPH0640776U (en) | 1992-11-06 | 1992-11-06 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0640776U true JPH0640776U (en) | 1994-05-31 |
Family
ID=13608132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7654192U Pending JPH0640776U (en) | 1992-11-06 | 1992-11-06 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0640776U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0933114A (en) * | 1995-07-19 | 1997-02-07 | Daikin Ind Ltd | Refrigerating device |
| JP2019007668A (en) * | 2017-06-23 | 2019-01-17 | 福島工業株式会社 | Refrigeration device |
-
1992
- 1992-11-06 JP JP7654192U patent/JPH0640776U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0933114A (en) * | 1995-07-19 | 1997-02-07 | Daikin Ind Ltd | Refrigerating device |
| JP2019007668A (en) * | 2017-06-23 | 2019-01-17 | 福島工業株式会社 | Refrigeration device |
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