JP2003314913A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JP2003314913A JP2003314913A JP2002117224A JP2002117224A JP2003314913A JP 2003314913 A JP2003314913 A JP 2003314913A JP 2002117224 A JP2002117224 A JP 2002117224A JP 2002117224 A JP2002117224 A JP 2002117224A JP 2003314913 A JP2003314913 A JP 2003314913A
- Authority
- JP
- Japan
- Prior art keywords
- accumulator
- compressor
- pressure
- electric motor
- air conditioner
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は空気調和装置に係わ
り、詳しくは、アキュムレータを備えた内部高圧型の圧
縮機において、高圧の密閉容器内と低圧のアキュムレー
タ間にリリース弁を備えたバイパス管を設け、密閉容器
内の圧力上昇を抑制するものに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly, to an internal high pressure type compressor having an accumulator, in which a bypass pipe having a release valve is provided between a high pressure closed container and a low pressure accumulator. The present invention relates to a device that is provided to suppress a pressure increase in a closed container.
【０００２】[0002]
【従来の技術】従来の圧縮機には例えば、図５に示すロ
ータリ式圧縮機がある。図において、圧縮機1'は、密閉
容器1a' 内に上下に電動機２と、この電動機２によって
駆動される圧縮部３が配置されている。前記圧縮部３
は、前記電動機２の回転力をこの圧縮部３に伝達するた
めの偏心軸部５を有するクランク軸４と、円筒内面に吸
入口６および吐出口（図示せず）を有するシリンダ７
と、同シリンダ７の軸方向両端に配置され、前記クラン
ク軸４を回転自在に支持する上軸受８および下軸受９
と、前記シリンダ７の円筒内面に沿って移動し、内周部
が前記偏心軸部５に回転可能に嵌合された環状のピスト
ン10とにより構成されている。6aは、前記吸入口６に連
通し、アキュムレータ22より低圧冷媒を吸入して、前記
圧縮部３に供給する吸入管である。また、前記ピストン
10の外周面と前記シリンダ７の円筒内面とで圧縮室11が
形成されている。2. Description of the Related Art A conventional compressor is, for example, a rotary compressor shown in FIG. In the figure, a compressor 1'has an electric motor 2 arranged vertically inside a hermetically sealed container 1a ', and a compression section 3 driven by the electric motor 2. The compression unit 3
Is a crankshaft 4 having an eccentric shaft portion 5 for transmitting the rotational force of the electric motor 2 to the compression portion 3, and a cylinder 7 having a suction port 6 and a discharge port (not shown) on the inner surface of the cylinder.
And an upper bearing 8 and a lower bearing 9 which are arranged at both axial ends of the cylinder 7 and rotatably support the crankshaft 4.
And an annular piston 10 which moves along the inner surface of the cylinder of the cylinder 7 and whose inner peripheral portion is rotatably fitted to the eccentric shaft portion 5. Reference numeral 6 a is a suction pipe that communicates with the suction port 6, sucks low-pressure refrigerant from the accumulator 22, and supplies the low-pressure refrigerant to the compression unit 3. Also, the piston
The outer peripheral surface of 10 and the inner surface of the cylinder of the cylinder 7 form a compression chamber 11.
【０００３】前記クランク軸４のスラスト軸受4aを下軸
受９に当接させて支持し、前記クランク軸４の下端を前
記密閉容器1a' の底面に溜められた潤滑油13に浸け、前
記クランク軸４の回転に伴ってこのクランク軸４の中空
部4bを介して前記潤滑油13を汲み上げ、汲み上げた潤滑
油13を各部に供給する構成となっている。The thrust bearing 4a of the crankshaft 4 is brought into contact with and supported by the lower bearing 9, and the lower end of the crankshaft 4 is dipped in the lubricating oil 13 accumulated on the bottom surface of the hermetically sealed container 1a '. 4, the lubricating oil 13 is pumped up through the hollow portion 4b of the crankshaft 4 and the pumped lubricating oil 13 is supplied to each portion.
【０００４】前記アキュムレータ22は、上端部に入口管
22a が、下端部に出口管22b が取付けられており、同出
口管22b は上端開口部22b1が前記アキュムレータ22の内
部で中間高さよりやや上方に位置するように成され、下
端は前記圧縮部３の吸入管6aに接続されている。そし
て、これら入口管22a と出口管22b の間に、反球面状の
スクリーン（図示せず）を、冷媒流通孔をもったバッフ
ル板22c と共に取付けられ、前記アキュムレータ22内を
前記入口管22a を配設するガス空間ｄと、前記出口管22
b を配設する液溜空間ｅとに区画している。また、前記
バッフル板22c は気液分離した液冷媒が前記吸入管6aに
直接入らないようにしている。The accumulator 22 has an inlet pipe at the upper end.
An outlet pipe 22b is attached to a lower end portion of 22a, and the outlet pipe 22b is formed so that an upper end opening portion 22b1 is located inside the accumulator 22 slightly above an intermediate height, and a lower end thereof is the compression portion 3b. Is connected to the suction pipe 6a. Then, an anti-spherical screen (not shown) is attached between the inlet pipe 22a and the outlet pipe 22b together with a baffle plate 22c having a refrigerant flow hole, and the inlet pipe 22a is arranged inside the accumulator 22. The gas space d to be installed and the outlet pipe 22
It is divided into a liquid storage space e in which b is arranged. Further, the baffle plate 22c prevents liquid refrigerant separated into gas and liquid from directly entering the suction pipe 6a.
【０００５】上記において、前記入口管22a は図示しな
い熱交換器と冷媒ガス管で接続されて、低圧の冷媒ガス
または、気液２相の混合冷媒を吸入する。吸入された気
液混合冷媒は前記バッフル板22c に当って分離し、液冷
媒は前記アキュムレータ22の液溜空間ｅに溜められ、前
記ガス空間ｄに溜まった低温低圧のガス冷媒が、前記圧
縮部３の吸入管6a、吸入口６を経由して前記圧縮室11に
吸入され、電動機２の回転に伴ない圧縮室11で圧縮さ
れ、高温高圧のガスとなり、吐出口（図示せず）より前
記電動機２を収納する電動機室2a内に循環し、密閉容器
1a' 内を内部高圧とし、吐出管14より外部へ吐出され
る。In the above, the inlet pipe 22a is connected to a heat exchanger (not shown) by a refrigerant gas pipe and sucks a low-pressure refrigerant gas or a gas-liquid two-phase mixed refrigerant. The gas-liquid mixed refrigerant sucked is separated by hitting the baffle plate 22c, the liquid refrigerant is stored in the liquid storage space e of the accumulator 22, and the low temperature and low pressure gas refrigerant stored in the gas space d is transferred to the compression unit. 3 is sucked into the compression chamber 11 via the suction pipe 6a and the suction port 6, and is compressed in the compression chamber 11 with the rotation of the electric motor 2 to become a high temperature and high pressure gas, which is discharged from a discharge port (not shown). A closed container that circulates in the electric motor room 2a that houses the electric motor 2
The inside of 1a 'has a high internal pressure and is discharged from the discharge pipe 14 to the outside.
【０００６】しかしながら、上記構成の内部高圧型の圧
縮機1'を中近東など外気温が非常に高い地域や、外的な
要因により凝縮器の能力が低下した場合のエアコンに使
用すると、圧縮機1'の高圧圧力が著しく上昇する可能性
が発生する。この場合、高圧圧力をリリース（減圧）す
る手段がないため、圧力上昇にともない圧縮機1'の寿命
と信頼性が低下していまうという問題がある。However, if the internal high-pressure compressor 1'having the above-mentioned structure is used in an area where the outside temperature is extremely high, such as in the Middle East, or in an air conditioner when the capacity of the condenser is lowered due to external factors, the compressor 1 ' The high pressure of 1'may rise significantly. In this case, since there is no means for releasing (decompressing) the high pressure, there is a problem that the life and reliability of the compressor 1 ′ are reduced as the pressure rises.
【０００７】[0007]
【発明が解決しようとする課題】本発明は上記問題点に
鑑みなされたもので、高圧側の密閉容器内と、低圧側の
アキュムレータ間にリリーフ弁を備えたバイパス管を設
け、高外気温の条件下でも密閉容器内の圧力上昇を抑制
し、耐久性と信頼性を確保することができる空気調和装
置を提供することを目的としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a bypass pipe provided with a relief valve is provided between a high-pressure side closed container and a low-pressure side accumulator to prevent a high outside air temperature. It is an object of the present invention to provide an air conditioner capable of suppressing the pressure increase in a closed container even under conditions and ensuring durability and reliability.
【０００８】[0008]
【課題を解決するための手段】本発明は上記の課題を解
決するため、圧縮機と、四方弁と、室外熱交換器と、膨
張弁と、室内熱交換器と、アキュムレータとを順次連結
し冷凍サイクルを形成し、前記圧縮機を密閉容器内に電
動機と圧縮部を配設した内部高圧式とすると共に、前記
アキュムレータは入口管および出口管を有し前記圧縮機
の側方に配設される一方、前記出口管を前記圧縮部の吸
入口に接続してなる空気調和装置であって、前記圧縮機
の高圧部空間と前記アキュムレータのガス空間とを、差
圧によって開閉するリリーフ弁を備えたバイパス管によ
り接続する一方、前記アキュムレータの出口管と前記圧
縮部の吸入口との間に絞り機構を設けてなる構成となっ
ている。In order to solve the above problems, the present invention sequentially connects a compressor, a four-way valve, an outdoor heat exchanger, an expansion valve, an indoor heat exchanger, and an accumulator. A refrigeration cycle is formed, and the compressor is an internal high-pressure type in which an electric motor and a compression section are arranged in a closed container, and the accumulator has an inlet pipe and an outlet pipe and is arranged laterally of the compressor. On the other hand, an air conditioner in which the outlet pipe is connected to the suction port of the compression unit, comprising a relief valve that opens and closes a high pressure unit space of the compressor and a gas space of the accumulator by a differential pressure. While connecting by a bypass pipe, a throttling mechanism is provided between the outlet pipe of the accumulator and the suction port of the compression section.
【０００９】また、前記バイパス管を前記電動機を収容
する電動機室と前記アキュムレータ内部のガス空間との
間に接続してなる構成となっている。Further, the bypass pipe is connected between an electric motor chamber accommodating the electric motor and a gas space inside the accumulator.
【００１０】また、前記バイパス管を前記電動機を収容
する電動機室と前記入口管との間に接続してなる構成と
なっている。Further, the bypass pipe is connected between an electric motor chamber accommodating the electric motor and the inlet pipe.
【００１１】また、前記電動機室側に接続される前記バ
イパス管の取付け位置は、前記密閉容器内に溜まる潤滑
油の油面より上位に接続してなる構成となっている。Further, the mounting position of the bypass pipe connected to the electric motor chamber side is such that the bypass pipe is connected to a position higher than the oil level of the lubricating oil accumulated in the closed container.
【００１２】また、前記絞り機構が前記圧縮機の内部高
圧によって作動する流量制御弁からなる構成となってい
る。The throttle mechanism is composed of a flow control valve which is operated by the internal high pressure of the compressor.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施の形態につい
て添付図面を参照して詳細に説明する。本発明における
空気調和装置に用いられる圧縮機をロータリ式圧縮機を
例に説明する。図１は本発明における冷凍サイクルの構
成図、図２は本発明によるロータリ式圧縮機の断面図、
図３は本発明の一実施例を示す要部拡大断面図、図４は
本発明における流量制御弁からなる絞り機構の要部拡大
断面図である。図において、空気調和装置は圧縮機１
と、四方弁50と、室外熱交換器51と、膨張弁52と、室内
熱交換器53と、アキュムレータ12とを順次連結し冷凍サ
イクルを形成し、前記圧縮機１は、密閉容器1a内に上下
に電動機２と、この電動機２によって駆動される圧縮部
３が配置されている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The compressor used in the air conditioner of the present invention will be described by taking a rotary compressor as an example. 1 is a configuration diagram of a refrigeration cycle according to the present invention, FIG. 2 is a sectional view of a rotary compressor according to the present invention,
FIG. 3 is an enlarged sectional view of an essential part showing an embodiment of the present invention, and FIG. 4 is an enlarged sectional view of an essential part of a throttle mechanism including a flow control valve according to the present invention. In the figure, the air conditioner is a compressor 1.
The four-way valve 50, the outdoor heat exchanger 51, the expansion valve 52, the indoor heat exchanger 53, and the accumulator 12 are sequentially connected to form a refrigeration cycle, and the compressor 1 is placed in the closed container 1a. An electric motor 2 and a compression unit 3 driven by the electric motor 2 are arranged above and below.
【００１４】前記圧縮部３は、前記電動機２の回転力を
この圧縮部３に伝達するための偏心軸部５を有するクラ
ンク軸４と、円筒内面に吸入口６および吐出口（図示せ
ず）を有するシリンダ７と、同シリンダ７の軸方向両端
に配置され、前記クランク軸４を回転自在に支持する上
軸受８および下軸受９と、前記シリンダ７の円筒内面に
沿って移動し、内周部が前記偏心軸部５に回転可能に嵌
合された環状のピストン10とにより構成されている。6a
は、前記吸入口６に連通し、アキュムレータ12より低圧
冷媒を吸入して、前記圧縮部３に供給する吸入管であ
る。また、前記ピストン10の外周面と前記シリンダ７の
円筒内面とで圧縮室11が形成されている。The compression part 3 has a crankshaft 4 having an eccentric shaft part 5 for transmitting the rotational force of the electric motor 2 to the compression part 3, and a suction port 6 and a discharge port (not shown) on the inner surface of the cylinder. And a lower bearing 9 that is disposed at both axial ends of the cylinder 7 and that rotatably supports the crankshaft 4, and a cylinder 7 that moves along the inner surface of the cylinder to form an inner circumference. The portion is constituted by an annular piston 10 rotatably fitted to the eccentric shaft portion 5. 6a
Is a suction pipe communicating with the suction port 6, sucking low-pressure refrigerant from the accumulator 12, and supplying the low-pressure refrigerant to the compression unit 3. A compression chamber 11 is formed by the outer peripheral surface of the piston 10 and the inner cylindrical surface of the cylinder 7.
【００１５】前記クランク軸４のスラスト軸受4aを下軸
受９に当接させて支持し、前記クランク軸４の下端を前
記密閉容器１の底面に溜められた潤滑油13に浸け、前記
クランク軸４の回転に伴ってこのクランク軸４の中空部
4bを介して前記潤滑油13を汲み上げ、汲み上げた潤滑油
13を各部に供給する構成となっている。The thrust bearing 4a of the crankshaft 4 is brought into contact with and supported by the lower bearing 9, and the lower end of the crankshaft 4 is dipped in the lubricating oil 13 stored in the bottom surface of the hermetically sealed container 1 to make the crankshaft 4 The hollow part of the crankshaft 4 with the rotation of
The lubricating oil 13 is pumped through 4b and the pumped lubricating oil
13 is supplied to each part.
【００１６】前記アキュムレータ12は固定金具ａ等によ
り、圧縮機本体１の側壁に立てて固定され、上端部の入
口ｂに入口管12a が、下端部の出口ｃに出口管12b が取
付けられており、同出口管12b は上端開口部12b1が前記
アキュムレータ12の内部で中間高さよりやや上方に位置
するように成され、下端は前記圧縮部３の吸入口６に連
通する吸入管6aに接続されている。そして、これら入口
管12a と出口管12b の間に、反球面状のスクリーン（図
示せず）を、冷媒流通孔をもったバッフル板12c と共に
取付けられ、前記アキュムレータ12内を前記入口管12a
を配設するガス空間ｄと、前記出口管12b を配設する液
溜空間ｅとに区画している。また、前記バッフル板12c
は気液分離した液冷媒が前記吸入管6aに直接入らないよ
うにしている。The accumulator 12 is vertically fixed to the side wall of the compressor body 1 by a fixing metal fitting a, etc., an inlet pipe 12a is attached to an inlet b at the upper end, and an outlet pipe 12b is attached to an outlet c at the lower end. The outlet pipe 12b is formed so that the upper end opening 12b1 is located slightly above the intermediate height inside the accumulator 12, and the lower end is connected to the suction pipe 6a communicating with the suction port 6 of the compression unit 3. There is. An anti-spherical screen (not shown) is attached between the inlet pipe 12a and the outlet pipe 12b together with a baffle plate 12c having a refrigerant flow hole, and the inside of the accumulator 12 is connected to the inlet pipe 12a.
Is divided into a gas space d in which is arranged and a liquid storage space e in which the outlet pipe 12b is arranged. Also, the baffle plate 12c
Prevents the liquid refrigerant separated into gas and liquid from directly entering the suction pipe 6a.
【００１７】上記において、前記入口管12a は図示しな
い熱交換器と冷媒ガス管で接続されて、低圧の冷媒ガス
または、気液２相の混合冷媒を吸入する。吸入された気
液混合冷媒は前記バッフル板12c に当って分離し、液冷
媒は前記アキュムレータ12の液溜空間ｅに溜められ、前
記ガス空間ｄに溜まった低温低圧のガス冷媒が、前記圧
縮部３の吸入管6a、吸入口６を経由して前記圧縮室11に
吸入され、電動機２の回転に伴ない圧縮室11で圧縮さ
れ、高温高圧のガスとなり、吐出口（図示せず）より前
記電動機２を収納する電動機室2a内に循環し、密閉容器
1a内を内部高圧とし、吐出管14より外部へ吐出される。In the above, the inlet pipe 12a is connected to a heat exchanger (not shown) by a refrigerant gas pipe and sucks a low-pressure refrigerant gas or a gas-liquid two-phase mixed refrigerant. The sucked gas-liquid mixed refrigerant collides with the baffle plate 12c and is separated, the liquid refrigerant is stored in the liquid storage space e of the accumulator 12, and the low temperature and low pressure gas refrigerant stored in the gas space d is compressed by the compression unit. 3 is sucked into the compression chamber 11 via the suction pipe 6a and the suction port 6, and is compressed in the compression chamber 11 with the rotation of the electric motor 2 to become a high temperature and high pressure gas, which is discharged from a discharge port (not shown). A closed container that circulates in the electric motor room 2a that houses the electric motor 2
The inside of 1a has a high internal pressure and is discharged from the discharge pipe 14 to the outside.
【００１８】前記電動機室2a（高温高圧）と前記アキュ
ムレータ12内部のガス空間ｄ（低温低圧）とを、差圧に
より開閉するリリーフ弁15を備えたバイパス管16により
接続し、前記リリーフ弁15を前記電動機室2aと前記アキ
ュムレータ12のガス空間ｄとの差圧が第一の設定値（例
えば、30〜35kg/cm2G ）のとき開き、第二の設定値（例
えば、30kg/cm2G ）以下のとき閉じるようにした構成と
なっている。The electric motor chamber 2a (high temperature and high pressure) and the gas space d (low temperature and low pressure) inside the accumulator 12 are connected by a bypass pipe 16 provided with a relief valve 15 which opens and closes by a differential pressure, and the relief valve 15 is connected. It opens when the differential pressure between the electric motor room 2a and the gas space d of the accumulator 12 is a first set value (for example, 30 to 35 kg / cm 2 G) and a second set value (for example, 30 kg / cm 2 G). ) It is configured to be closed at the following times.
【００１９】前記アキュムレータ12の出口管12b と前記
圧縮部３の吸入口６に接続された吸入管6aとの間に、前
記圧縮機１の内部高圧によって作動する流量制御弁17か
らなる絞り機構を設け、前記アキュムレータ12（低圧）
のガス空間ｄの圧力が上昇し過ぎた場合、前記圧縮部３
への吸入を絞るように構成されている。Between the outlet pipe 12b of the accumulator 12 and the suction pipe 6a connected to the suction port 6 of the compression section 3, a throttle mechanism composed of a flow control valve 17 operated by the internal high pressure of the compressor 1 is installed. Provided with the accumulator 12 (low pressure)
When the pressure of the gas space d of the
It is configured to throttle the inhalation to.
【００２０】また、図２の破線で示すように、前記バイ
パス管16を前記電動機室2aと低温低圧の前記入口管12a
との間に接続する構成とすることにより、作業が容易で
コスト的に有利となる。Further, as shown by the broken line in FIG. 2, the bypass pipe 16 is connected to the motor chamber 2a and the inlet pipe 12a at low temperature and low pressure.
With the configuration of connecting between and, the work is easy and the cost is advantageous.
【００２１】また、図３に示すように、前記電動機室2a
側に接続される前記バイパス管16の取付け位置は、前記
密閉容器1a内に溜まる潤滑油13の油面13a より上位に接
続する構成とすることにより、前記密閉容器1a内からの
吐油量の減少を防ぎ、性能低下を防止し、高品質を維持
することができる。As shown in FIG. 3, the motor room 2a
The installation position of the bypass pipe 16 connected to the side is such that the bypass pipe 16 is connected above the oil surface 13a of the lubricating oil 13 accumulated in the closed container 1a. It is possible to prevent reduction, prevent performance deterioration, and maintain high quality.
【００２２】また、図４に示すように、前記絞り機構と
しての流量制御弁17は、弁体17a とバネ材17b から構成
され、弁体17a の背面側に前記圧縮機１の内部高圧を供
給する圧入管18を接続し、高圧の圧力変動により、弁体
17a とバネ材17b の付勢力により、前記アキュムレータ
12から前記圧縮部３へのガス吸入量を制御する。また、
流量制御弁17には絞り量が所定以下にならないようにス
トッパ17c が設けられている。Further, as shown in FIG. 4, the flow control valve 17 as the throttle mechanism is composed of a valve body 17a and a spring material 17b, and supplies the internal high pressure of the compressor 1 to the back side of the valve body 17a. Connect the press-fitting pipe 18 to
Due to the biasing force of 17a and spring material 17b, the accumulator
The gas suction amount from 12 to the compression unit 3 is controlled. Also,
The flow control valve 17 is provided with a stopper 17c so that the throttle amount does not fall below a predetermined amount.
【００２３】上記構成において、高外気温時の冷房運転
などで、圧縮機１の内部の高圧圧力が異常に上昇し、前
記電動機室2aと前記アキュムレータ12のガス空間ｄとの
差圧が第一の設定値に達した時、前記リリーフ弁15が内
臓されたバネの作動により開き、密閉容器1aの高圧側か
ら前記アキュムレータ12の低圧側に高圧ガス冷媒をバイ
パスさせ（図３の矢印方向）、冷媒の循環量を下げ、高
圧ガス冷媒と低圧冷媒で熱交換することにより、圧縮機
１の圧力上昇を保護し性能低下を防止する。In the above structure, the high pressure inside the compressor 1 rises abnormally during cooling operation at high outside temperature, and the differential pressure between the electric motor chamber 2a and the gas space d of the accumulator 12 becomes first. When the set value is reached, the relief valve 15 is opened by the operation of a built-in spring, and the high-pressure gas refrigerant is bypassed from the high-pressure side of the closed container 1a to the low-pressure side of the accumulator 12 (arrow direction in FIG. 3), By reducing the circulation amount of the refrigerant and exchanging heat between the high-pressure gas refrigerant and the low-pressure refrigerant, the pressure rise of the compressor 1 is protected and the performance deterioration is prevented.
【００２４】また、前記リリーフ弁15が開となること
で、前記アキュムレータ12側の圧力が上昇し、差圧が第
二の設定値以下になると、前記リリーフ弁15が閉まり、
通常の冷媒循環量に切り換る。また、前記アキュムレー
タ12側の圧力が上昇し過ぎた場合、圧縮部３への冷媒流
量が増え、圧縮機１の高圧が更に上昇する場合があるた
め、前記流量制御弁17により、前記アキュムレータ12か
ら前記圧縮部３へのガス吸入量を制御して、圧縮機１の
圧力上昇を抑制し適正に保つようになされている。Further, when the relief valve 15 is opened, the pressure on the accumulator 12 side increases, and when the differential pressure becomes equal to or lower than the second set value, the relief valve 15 closes,
Switch to the normal refrigerant circulation amount. When the pressure on the accumulator 12 side rises too much, the refrigerant flow rate to the compression section 3 increases and the high pressure of the compressor 1 may rise further. Therefore, the flow rate control valve 17 causes the accumulator 12 to move from the accumulator 12 side. The amount of gas sucked into the compression section 3 is controlled to suppress an increase in the pressure of the compressor 1 and maintain it appropriately.
【００２５】以上説明したように、高外気温時の冷房運
転においても、内部高圧型の圧縮機１の運転を継続して
いる状態で、冷媒の循環量を下げ、高圧ガス冷媒と低圧
冷媒で熱交換することにより、圧縮機１の圧力上昇を保
護し性能低下を防止し、耐久性（寿命）と信頼性を確保
できる空気調和装置となる。As described above, even in the cooling operation at the high outside temperature, the circulation amount of the refrigerant is reduced while the operation of the internal high pressure type compressor 1 is continued, and the high pressure gas refrigerant and the low pressure refrigerant are used. By exchanging heat, the air conditioner can protect the pressure rise of the compressor 1 and prevent the performance from deteriorating, and can ensure the durability (lifetime) and reliability.
【００２６】[0026]
【発明の効果】以上ように本発明による圧縮機によれ
ば、高外気温時の冷房運転においても、内部高圧型の圧
縮機の運転を継続している状態で、冷媒の循環量を下
げ、高圧ガス冷媒と低圧冷媒で熱交換することにより、
圧縮機の圧力上昇を保護し性能低下を防止し、耐久性
（寿命）と信頼性を確保できる空気調和装置となる。As described above, according to the compressor of the present invention, the circulation amount of the refrigerant is reduced while the operation of the internal high pressure type compressor is continued even in the cooling operation at the high outside temperature, By exchanging heat with the high pressure gas refrigerant and the low pressure refrigerant,
An air conditioner that protects the pressure rise of the compressor, prevents performance deterioration, and ensures durability (life) and reliability.
【図１】本発明による冷凍サイクルの構成図である。FIG. 1 is a configuration diagram of a refrigeration cycle according to the present invention.
【図２】本発明による圧縮機の断面図である。FIG. 2 is a sectional view of a compressor according to the present invention.
【図３】本発明による圧縮機の一実施例を示す要部拡大
断面図である。FIG. 3 is an enlarged sectional view of an essential part showing an embodiment of a compressor according to the present invention.
【図４】本発明による流量制御弁からなる絞り機構の要
部拡大断面図である。FIG. 4 is an enlarged sectional view of an essential part of a throttle mechanism including a flow control valve according to the present invention.
【図５】従来例による圧縮機の断面図である。FIG. 5 is a sectional view of a compressor according to a conventional example.
１ 圧縮機 1a 密閉容器 ２ 電動機 2a 電動機室 ３ 圧縮部 ４ クランク軸 ５ 偏心軸部 ６ 吸入口 6a 吸入管 7 シリンダ ８ 絞り機構 ９ 室内熱交換器 10 ピストン 11 圧縮室 12 アキュムレータ 12a 入口管 12b 出口管 12c バッフル板 13 潤滑油 14 吐出管 15 リリーフ弁 16 バイパス管 17 流量制御弁（絞り機構） 17a 弁体 17b バネ材 17c ストッパ 18 圧入管 ａ 金具 ｂ 入口 ｃ 出口 ｄ ガス空間 ｅ 液溜空間 50 四方弁 51 室外熱交換器 52 膨張弁 53 室内熱交換器 1 compressor 1a closed container 2 electric motor 2a Electric motor room 3 Compressor 4 crankshaft 5 Eccentric shaft 6 suction port 6a suction pipe 7 cylinders 8 Aperture mechanism 9 Indoor heat exchanger 10 pistons 11 compression chamber 12 Accumulator 12a inlet pipe 12b outlet pipe 12c baffle board 13 Lubricating oil 14 Discharge pipe 15 relief valve 16 bypass pipe 17 Flow control valve (throttle mechanism) 17a Disc 17b Spring material 17c Stopper 18 Press fit pipe a metal fittings b entrance c exit d gas space e Liquid storage space 50 four-way valve 51 outdoor heat exchanger 52 Expansion valve 53 Indoor heat exchanger
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ０４Ｃ 29/10 ３１１ Ｆ０４Ｃ 29/10 ３１１Ｇ Ｆ２５Ｂ 31/02 Ｆ２５Ｂ 31/02 Ｚ 41/06 41/06 Ｊ ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) F04C 29/10 311 F04C 29/10 311G F25B 31/02 F25B 31/02 Z 41/06 41/06 J
Claims (5)
膨張弁と、室内熱交換器と、アキュムレータとを順次連
結し冷凍サイクルを形成し、前記圧縮機を密閉容器内に
電動機と圧縮部を配設した内部高圧式とすると共に、前
記アキュムレータは入口管および出口管を有し前記圧縮
機の側方に配設される一方、前記出口管を前記圧縮部の
吸入口に接続してなる空気調和装置であって、 前記圧縮機の高圧部空間と前記アキュムレータのガス空
間とを、差圧によって開閉するリリーフ弁を備えたバイ
パス管により接続する一方、前記アキュムレータの出口
管と前記圧縮部の吸入口との間に絞り機構を設けてなる
ことを特徴とする空気調和装置。1. A compressor, a four-way valve, an outdoor heat exchanger,
An expansion valve, an indoor heat exchanger, and an accumulator are sequentially connected to form a refrigeration cycle, and the compressor is an internal high-pressure type in which an electric motor and a compression unit are arranged in a closed container, and the accumulator is an inlet pipe. An air conditioner that has an outlet pipe and is disposed on the side of the compressor while the outlet pipe is connected to the suction port of the compressor, the high pressure space of the compressor and the The gas space of the accumulator is connected by a bypass pipe provided with a relief valve that opens and closes by a differential pressure, and a throttle mechanism is provided between the outlet pipe of the accumulator and the suction port of the compression section. Air conditioner that does.
電動機室と前記アキュムレータ内部のガス空間との間に
接続してなることを特徴とする請求項１記載の空気調和
装置。2. The air conditioner according to claim 1, wherein the bypass pipe is connected between an electric motor chamber accommodating the electric motor and a gas space inside the accumulator.
電動機室と前記入口管との間に接続してなることを特徴
とする請求項１記載の空気調和装置。3. The air conditioner according to claim 1, wherein the bypass pipe is connected between an electric motor chamber accommodating the electric motor and the inlet pipe.
ス管の取付け位置は、前記密閉容器内に溜まる潤滑油の
油面より上位に接続してなることを特徴とする請求項
１、２または３のいずれかに記載の空気調和装置。4. The mounting position of the bypass pipe connected to the electric motor chamber side is connected to a level higher than the oil level of the lubricating oil accumulated in the closed container. The air conditioner according to any one of 3 above.
よって作動する流量制御弁からなることを特徴とする請
求項１記載の空気調和装置。5. The air conditioner according to claim 1, wherein the throttle mechanism comprises a flow control valve that operates by high pressure inside the compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002117224A JP2003314913A (en) | 2002-04-19 | 2002-04-19 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002117224A JP2003314913A (en) | 2002-04-19 | 2002-04-19 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003314913A true JP2003314913A (en) | 2003-11-06 |
Family
ID=29534504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002117224A Pending JP2003314913A (en) | 2002-04-19 | 2002-04-19 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003314913A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910353A (en) * | 2016-06-20 | 2016-08-31 | 泰州格灵电器制造有限公司 | Pressure-relief steady flow valve of tower crane air conditioner receiver-drier |
| CN109296523A (en) * | 2018-10-29 | 2019-02-01 | 铜陵汇宇实业有限公司 | A kind of compressor exhaust pipe with impurity screening function |
-
2002
- 2002-04-19 JP JP2002117224A patent/JP2003314913A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910353A (en) * | 2016-06-20 | 2016-08-31 | 泰州格灵电器制造有限公司 | Pressure-relief steady flow valve of tower crane air conditioner receiver-drier |
| CN109296523A (en) * | 2018-10-29 | 2019-02-01 | 铜陵汇宇实业有限公司 | A kind of compressor exhaust pipe with impurity screening function |
| CN109296523B (en) * | 2018-10-29 | 2023-10-03 | 铜陵汇宇实业有限公司 | Compressor blast pipe with impurity filtering function |
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