JP2003049777A - Hermetic compressor and refrigerating device using the same - Google Patents
Hermetic compressor and refrigerating device using the sameInfo
- Publication number
- JP2003049777A JP2003049777A JP2001238971A JP2001238971A JP2003049777A JP 2003049777 A JP2003049777 A JP 2003049777A JP 2001238971 A JP2001238971 A JP 2001238971A JP 2001238971 A JP2001238971 A JP 2001238971A JP 2003049777 A JP2003049777 A JP 2003049777A
- Authority
- JP
- Japan
- Prior art keywords
- discharge pipe
- electric motor
- refrigerant
- discharged
- discharge
- 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.)
- Granted
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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
-
- 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
-
- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
- F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
-
- 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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/047—Water-cooled condensers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Compressor (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、密閉型圧縮機およ
びそれを用いた冷凍装置に関する。TECHNICAL FIELD The present invention relates to a hermetic compressor and a refrigerating apparatus using the same.
【０００２】[0002]
【従来の技術】一般に、シェルケース内に電動機部とそ
の下部に連結された二段圧縮式の圧縮部とを備え、一段
圧縮部から吐出される冷媒をシェルケース内に吐出し、
電動機部の下方から導出される吐出管を備え、この吐出
管を通じて吐出される冷媒を、二段圧縮部の吸込口に導
く構成を備えた密閉型圧縮機が知られている。2. Description of the Related Art Generally, an electric motor unit and a two-stage compression type compression unit connected to a lower portion of the electric motor unit are provided in a shell case, and refrigerant discharged from the first-stage compression unit is discharged into the shell case.
There is known a hermetic compressor including a discharge pipe led out from below the electric motor unit and having a configuration in which a refrigerant discharged through the discharge pipe is guided to a suction port of a two-stage compression unit.
【０００３】そして、近年では、この密閉型圧縮機にガ
スクーラを接続し、このガスクーラに高圧冷媒を流すと
共に、このガスクーラに水配管を設け、この水配管を流
れる水を昇温させて給湯するヒートポンプ式給湯機が提
案されている。In recent years, a gas cooler is connected to the hermetic compressor, a high-pressure refrigerant is caused to flow through the gas cooler, a water pipe is provided in the gas cooler, and the water flowing through the water pipe is heated to heat the heat pump. Water heaters have been proposed.
【０００４】[0004]
【発明が解決しようとする課題】従来のヒートポンプ式
給湯機では、起動時に圧縮機温度が低いため、急速炊き
上げが困難になるという問題があった。The conventional heat pump water heater has a problem that it is difficult to quickly cook it because the compressor temperature is low at the time of starting.
【０００５】すなわち、密閉型圧縮機において、上記の
ように、電動機部の下方から冷媒を吐出する構成を採用
した場合、起動時の圧縮機の吐出ガス温度が低いため、
急速炊き上げが困難になるという問題があった。That is, in the hermetic compressor, when the refrigerant is discharged from the lower part of the electric motor unit as described above, the discharge gas temperature of the compressor at start-up is low,
There was a problem that rapid cooking would be difficult.
【０００６】これに対し、電動機部の上方から冷媒を吐
出する構成とした場合、冷媒が、電動機部の熱を吸熱し
て吐出されるため、起動時であっても、吐出ガス温度が
比較的高くなり、急速炊き上げが可能になる。しかし、
この場合、負荷が増大して圧縮機温度が上昇したとき、
その温度を下げるために、圧縮機の回転数を下げる等の
負荷調整が必要になるという問題があった。On the other hand, when the refrigerant is discharged from above the electric motor section, the refrigerant absorbs the heat of the electric motor section and is discharged, so that the discharge gas temperature is relatively high even at the time of startup. It becomes expensive and quick cooking is possible. But,
In this case, when the load increases and the compressor temperature rises,
In order to lower the temperature, there is a problem that load adjustment such as lowering the rotation speed of the compressor is required.
【０００７】そこで、本発明の目的は、上述した従来の
技術が有する課題を解消し、圧縮機の吐出ガス温度を簡
単な構成で調整可能にした密閉型圧縮機およびそれを用
いた冷凍装置を提供することにある。Therefore, an object of the present invention is to solve the above-mentioned problems of the conventional technique and to provide a hermetic compressor capable of adjusting the discharge gas temperature of the compressor with a simple structure and a refrigerating apparatus using the same. To provide.
【０００８】[0008]
【課題を解決するための手段】請求項１記載の発明は、
シェルケース内に電動機部とその下部に連結された圧縮
部とを備え、この圧縮部から吐出される冷媒をシェルケ
ース内に吐出し、電動機部の上方から導出される第一の
吐出管と、電動機部の下方から導出される第二の吐出管
とを備え、第一の吐出管と第二の吐出管を下流に選択的
に連通させる弁を備えたことを特徴とする。The invention according to claim 1 is
An electric motor section and a compression section connected to the lower part of the electric motor section are provided in the shell case, the refrigerant discharged from the compression section is discharged into the shell case, and a first discharge pipe is drawn from above the electric motor section, A second discharge pipe led out from below the electric motor unit is provided, and a valve that selectively connects the first discharge pipe and the second discharge pipe downstream is provided.
【０００９】請求項２記載の発明は、シェルケース内に
電動機部とその下部に連結された二段圧縮式の圧縮部と
を備え、一段圧縮部から吐出される冷媒をシェルケース
内に吐出し、電動機部の上方から導出される第一の吐出
管と、電動機部の下方から導出される第二の吐出管とを
備え、第一の吐出管と第二の吐出管を二段圧縮部の吸込
みポートに選択的に連通させる弁を備えたことを特徴と
する。According to a second aspect of the present invention, the shell case is provided with an electric motor section and a two-stage compression type compression section connected to a lower portion thereof, and the refrigerant discharged from the one-stage compression section is discharged into the shell case. , A first discharge pipe led out from above the electric motor unit and a second discharge pipe led out from below the electric motor unit, and the first discharge pipe and the second discharge pipe are connected to the two-stage compression unit. It is characterized in that a valve that selectively communicates with the suction port is provided.
【００１０】請求項３記載の発明は、請求項１又は請求
項２記載の密閉型圧縮機を備え、起動時や電動機部の発
熱の多い場合、第一の吐出管を通じて冷媒を吐出し、そ
れ以外の定常運転時には、第二の吐出管を通じて冷媒を
吐出するように、上記弁を制御する手段を備えたことを
特徴とする。The invention according to claim 3 is provided with the hermetic compressor according to claim 1 or 2, and discharges the refrigerant through the first discharge pipe at the time of start-up or when a large amount of heat is generated in the electric motor section, During steady-state operation other than the above, a means for controlling the valve is provided so as to discharge the refrigerant through the second discharge pipe.
【００１１】請求項４記載の発明は、請求項１又は請求
項２記載の密閉型圧縮機を備え、この圧縮機の吐出ガス
を直接蒸発器に供給する除霜手段を備え、この除霜手段
を動作させる場合、第一の吐出管を通じて冷媒を吐出す
るように、上記弁を制御する手段を備えたことを特徴と
する。According to a fourth aspect of the present invention, the hermetic compressor according to the first or second aspect is provided with defrosting means for directly supplying the discharge gas of the compressor to the evaporator. Is operated, the means for controlling the valve is provided so as to discharge the refrigerant through the first discharge pipe.
【００１２】[0012]
【発明の実施の形態】以下、本発明の一実施形態を添付
図面に基づいて説明する。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the accompanying drawings.
【００１３】図１は、ヒートポンプ式給湯機の冷媒回路
を示す。１は、二段圧縮型ロータリー式の密閉型圧縮機
を示す。この密閉型圧縮機１はシェルケース１１の内部
にステータ１２Ａとロータ１２Ｂからなる電動機部１２
と、この電動機部１２の下部に連結されて駆動される、
一段圧縮部１５と二段圧縮部１７からなる二段圧縮式の
圧縮部１３とを有して構成されている。４３は温度セン
サである。FIG. 1 shows a refrigerant circuit of a heat pump type water heater. Reference numeral 1 denotes a two-stage compression type rotary hermetic compressor. The hermetic compressor 1 includes a shell case 11 having an electric motor section 12 including a stator 12A and a rotor 12B.
And is connected to the lower part of the electric motor unit 12 and driven,
A two-stage compression type compression unit 13 including a one-stage compression unit 15 and a two-stage compression unit 17 is provided. 43 is a temperature sensor.
【００１４】一段圧縮部１５の吸込みポート１５Ａから
吸い込まれた冷媒は、この圧縮部１５で中間圧Ｐ１に圧
縮された後、吐出ポート１５Ｂから一旦シェルケース１
１内に吐出され、このシェルケース１１内を経た後、ス
テータ１２Ａの上方から導出される第一の吐出管２１
か、或いはステータ１２Ａの下方から導出される第二の
吐出管２２のいずれかに連なる管２３を通って、二段圧
縮部１７の吸込みポート１７Ａに導かれる。この吸込み
ポート１７Ａに導かれた中間圧Ｐ１の冷媒は、二段圧縮
部１７で高圧Ｐ２に圧縮されて吐出される。The refrigerant sucked from the suction port 15A of the one-stage compression section 15 is compressed to the intermediate pressure P1 by the compression section 15, and then temporarily discharged from the discharge port 15B.
The first discharge pipe 21 is discharged from above the stator 12A after being discharged into the shell case 11 and passing through the inside of the shell case 11.
Alternatively, it is guided to the suction port 17A of the two-stage compression section 17 through a pipe 23 connected to one of the second discharge pipes 22 led out from below the stator 12A. The intermediate-pressure P1 refrigerant introduced into the suction port 17A is compressed to a high pressure P2 in the two-stage compression section 17 and is discharged.
【００１５】そして、この密閉型圧縮機１では、第一の
吐出管２１と第二の吐出管２２の合流位置に三方弁２５
が設けられ、この三方弁２５の制御によって、第一の吐
出管２１と第二の吐出管２２のいずれかが、二段圧縮部
１７の吸込みポート（下流）１７Ａに選択的に連通す
る。In the hermetic compressor 1, the three-way valve 25 is provided at the confluence of the first discharge pipe 21 and the second discharge pipe 22.
By the control of the three-way valve 25, either the first discharge pipe 21 or the second discharge pipe 22 selectively communicates with the suction port (downstream) 17A of the two-stage compression section 17.
【００１６】この圧縮機１には、実線で示す冷媒配管を
介して、ガスクーラ（高圧側熱交換器）３、減圧装置
（膨張弁）５、蒸発器（低圧側熱交換器）７が順に接続
されている。この冷凍サイクルにはＣＯ2冷媒が使用さ
れる。ＣＯ2冷媒はオゾン破壊係数が０で、地球温暖化
係数が１であるため、環境への負荷が小さく、毒性、可
燃性がなく安全で安価である。A gas cooler (high pressure side heat exchanger) 3, a pressure reducing device (expansion valve) 5, and an evaporator (low pressure side heat exchanger) 7 are sequentially connected to the compressor 1 through a refrigerant pipe shown by a solid line. Has been done. A CO 2 refrigerant is used in this refrigeration cycle. Since the CO 2 refrigerant has an ozone depletion potential of 0 and a global warming potential of 1, it has a low environmental load, is neither toxic nor flammable, and is safe and inexpensive.
【００１７】上記ガスクーラ３は、ＣＯ2冷媒が流れる
冷媒コイル９と、水が流れる水コイル１０とからなり、
この水コイル１０は水配管を介して図示を省略した貯湯
タンクに接続されている。水配管には図示を省略した循
環ポンプが接続され、この循環ポンプが駆動されて貯湯
タンクの水がガスクーラ３を循環し、ここで加熱されて
貯湯タンクに貯湯される。また、４１は水量調整弁であ
り、４２は水配管を流れる水の温度検知センサである。The gas cooler 3 comprises a refrigerant coil 9 in which a CO 2 refrigerant flows and a water coil 10 in which water flows,
The water coil 10 is connected to a hot water storage tank (not shown) via a water pipe. A circulation pump (not shown) is connected to the water pipe, and the circulation pump is driven to circulate the water in the hot water storage tank through the gas cooler 3, where it is heated and stored in the hot water storage tank. Further, 41 is a water amount adjusting valve, and 42 is a temperature detecting sensor of water flowing through the water pipe.
【００１８】この冷凍機ユニットは屋外に設置されてお
り、蒸発器７に付着した霜を除去するための除霜運転が
必要になる。This refrigerator unit is installed outdoors and requires a defrosting operation for removing the frost adhering to the evaporator 7.
【００１９】この場合の除霜運転は、二系統に区別され
た除霜手段が司る。一方の除霜手段は、圧縮機１の二段
圧縮部１７から吐出された高圧Ｐ２の冷媒を、破線で示
すように、ガスクーラ３および膨張弁５をバイパスする
バイパス管３３を通じて蒸発器７に供給し、この蒸発器
７を加熱する回路である。この場合、バイパス管３３に
設けられた通常時閉の除霜用電磁弁３５が開かれる。ま
た、他方の除霜手段は、三方弁２５を経た中間圧Ｐ１の
冷媒を、破線で示すように、管３７を通じて蒸発器７に
供給し、この蒸発器７を加熱する回路である。この場
合、管３７に設けられた通常時閉の除霜用電磁弁３９が
開かれる。The defrosting operation in this case is controlled by the defrosting means which is divided into two systems. One defrosting means supplies the refrigerant of high pressure P2 discharged from the two-stage compression section 17 of the compressor 1 to the evaporator 7 through a bypass pipe 33 that bypasses the gas cooler 3 and the expansion valve 5 as shown by a broken line. This is a circuit for heating the evaporator 7. In this case, the normally closed defrosting electromagnetic valve 35 provided in the bypass pipe 33 is opened. The other defrosting means is a circuit that supplies the refrigerant of intermediate pressure P1 that has passed through the three-way valve 25 to the evaporator 7 through the pipe 37 and heats the evaporator 7 as shown by the broken line. In this case, the normally closed defrosting electromagnetic valve 39 provided in the pipe 37 is opened.
【００２０】本実施形態では、圧縮機１の起動時、或い
は温度センサ４３の検知値に従い、電動機部１２の発熱
が多いとされた場合等、三方弁２５が制御されて、第一
の吐出管２１と管２３が連通し、それ以外の定常運転時
には、三方弁２５が制御されて、第二の吐出管２２と管
２３が連通する。In this embodiment, the three-way valve 25 is controlled and the first discharge pipe is controlled when the compressor 1 is started or when the heat generated in the electric motor section 12 is large according to the detection value of the temperature sensor 43. 21 and the pipe 23 communicate with each other, and during the other steady operation, the three-way valve 25 is controlled so that the second discharge pipe 22 and the pipe 23 communicate with each other.
【００２１】この種のヒートポンプ式給湯機では、起動
時の圧縮機１の吐出ガス温度が低いため、一般的に、ガ
スクーラ３での急速炊き上げが困難になる。In this type of heat pump water heater, the temperature of the gas discharged from the compressor 1 at the time of starting is low, so that it is generally difficult to quickly cook the gas in the gas cooler 3.
【００２２】本実施形態では、起動時等の出湯温度が低
い場合、図２Ａ及び図２Ｂに示すように、三方弁２５が
制御され、第一の吐出管２１と管２３が連通するため、
シェルケース１１内を通過した中間圧Ｐ１の冷媒が、電
動機部１２の熱を吸熱して吐出されるため、起動時等で
あっても、高圧Ｐ２の吐出ガス温度が比較的高くなり、
目標温度（例えば８０℃）に到達するまでの急速炊き上
げが可能になる。この場合、目標温度に到達すれば、三
方弁２５が制御され、図２Ｃに示すように、第二の吐出
管２２と管２３が連通する。これによれば、シェルケー
ス１１内の中間圧Ｐ１の冷媒が電動機部１２を通過しな
い分だけ、二段圧縮部１７の吸込み温度が低くなり、圧
縮効率を向上させることができる。In this embodiment, when the hot water outlet temperature is low at the time of start-up, as shown in FIGS. 2A and 2B, the three-way valve 25 is controlled and the first discharge pipe 21 and the pipe 23 communicate with each other.
Since the refrigerant of the intermediate pressure P1 that has passed through the shell case 11 absorbs the heat of the electric motor unit 12 and is discharged, the discharge gas temperature of the high pressure P2 becomes relatively high even at the time of startup,
Rapid cooking is possible until the target temperature (for example, 80 ° C.) is reached. In this case, when the target temperature is reached, the three-way valve 25 is controlled, and the second discharge pipe 22 and the pipe 23 communicate with each other, as shown in FIG. 2C. According to this, since the refrigerant of the intermediate pressure P1 in the shell case 11 does not pass through the electric motor section 12, the suction temperature of the two-stage compression section 17 becomes lower, and the compression efficiency can be improved.
【００２３】一方、ガスクーラ３における負荷が増大
し、図３Ａに示すように、温度センサ４３で検知される
圧縮機１の温度が上昇し、上限温度（例えば１２０℃）
に到達した場合、図３Ｂに示すように、三方弁２５が制
御され、第一の吐出管２１と管２３が連通する。この場
合、シェルケース１１内を通過した中間圧Ｐ１の冷媒
が、電動機部１２の熱を吸熱して吐出されるため、冷媒
によって電動機部１２が冷却されることになり、圧縮機
１の温度が降下する。On the other hand, the load on the gas cooler 3 increases, and the temperature of the compressor 1 detected by the temperature sensor 43 increases, as shown in FIG. 3A, and the upper limit temperature (for example, 120 ° C.) is reached.
3B, the three-way valve 25 is controlled so that the first discharge pipe 21 and the pipe 23 communicate with each other. In this case, since the refrigerant of the intermediate pressure P1 that has passed through the shell case 11 absorbs the heat of the electric motor section 12 and is discharged, the electric motor section 12 is cooled by the refrigerant, and the temperature of the compressor 1 is reduced. To descend.
【００２４】ただし、圧縮機１の温度が解除温度（例え
ば１００℃）に到達した場合、図３Ｃに示すように、三
方弁２５が制御されて、第二の吐出管２２と管２３とが
連通する。これによれば、上述したように、シェルケー
ス１１内の中間圧Ｐ１の冷媒が電動機部１２を通過しな
い分だけ、二段圧縮部１７の吸込み温度が低くなり、圧
縮効率を向上させることができる。However, when the temperature of the compressor 1 reaches the release temperature (for example, 100 ° C.), the three-way valve 25 is controlled so that the second discharge pipe 22 and the pipe 23 communicate with each other, as shown in FIG. 3C. To do. According to this, as described above, the suction temperature of the two-stage compression section 17 becomes lower as much as the refrigerant of the intermediate pressure P1 in the shell case 11 does not pass through the electric motor section 12, and the compression efficiency can be improved. .
【００２５】本実施形態では、圧縮機１の温度を降下さ
せる場合、従来のように、圧縮機１の回転数を下げる等
の負荷調整が不要になる。In the present embodiment, when the temperature of the compressor 1 is lowered, it is not necessary to adjust the load such as lowering the rotation speed of the compressor 1 as in the conventional case.
【００２６】除霜運転時には、図４Ａに示すように、除
霜ＯＮ信号が出力される。この除霜ＯＮ信号は、蒸発温
度と外気温度に応じて出力される。除霜ＯＦＦ信号が出
力されている間は、圧縮機１の効率を重視し、図４Ｃに
示すように、三方弁２５が制御されて、第二の吐出管２
２と管２３とが連通している。除霜ＯＮ信号が出力され
ると、除霜用電磁弁３５，３９が開かれると共に、図４
Ｂに示すように、三方弁２５が制御され、第一の吐出管
２１と管２３が連通する。これによれば、シェルケース
１１内を通過した中間圧Ｐ１の冷媒が、電動機部１２の
熱を吸熱して吐出されるため、バイパス管３３及び管３
７を通過して、蒸発器７に供給される冷媒温度が上昇す
るため、除霜時間Ｔの短縮が図られる。During the defrosting operation, a defrosting ON signal is output as shown in FIG. 4A. This defrosting ON signal is output according to the evaporation temperature and the outside air temperature. While the defrosting OFF signal is being output, the efficiency of the compressor 1 is emphasized, and as shown in FIG. 4C, the three-way valve 25 is controlled and the second discharge pipe 2 is controlled.
2 and the pipe 23 communicate with each other. When the defrosting ON signal is output, the defrosting solenoid valves 35 and 39 are opened, and
As shown in B, the three-way valve 25 is controlled so that the first discharge pipe 21 and the pipe 23 communicate with each other. According to this, since the refrigerant of the intermediate pressure P1 that has passed through the shell case 11 absorbs the heat of the electric motor section 12 and is discharged, the bypass pipe 33 and the pipe 3
Since the temperature of the refrigerant supplied to the evaporator 7 after passing through 7 rises, the defrosting time T can be shortened.
【００２７】図５は、別の実施形態を示す。本実施形態
では、密閉型圧縮機５０が一段圧縮機である。この密閉
型圧縮機５０はシェルケース５１の内部にステータ５２
Ａとロータ５２Ｂからなる電動機部５２と、この電動機
部５２の下部に連結されて駆動される一段圧縮部５３と
を有して構成されている。FIG. 5 shows another embodiment. In this embodiment, the hermetic compressor 50 is a single-stage compressor. This hermetic compressor 50 has a stator 52 inside a shell case 51.
The electric motor unit 52 is composed of A and the rotor 52B, and the one-stage compression unit 53 is connected to the lower portion of the electric motor unit 52 and driven.
【００２８】一段圧縮部５３の吸込みポート５３Ａから
吸い込まれた冷媒は、この圧縮部５３で高圧に圧縮され
た後、吐出ポート５３Ｂから一旦シェルケース５１内に
吐出され、このシェルケース５１内を経た後、ステータ
５２Ａの上方から導出される第一の吐出管５５か、或い
はステータ５２Ａの下方から導出される第二の吐出管５
６のいずれかに連なる管５７を通って下流に吐出され
る。そして、この密閉型圧縮機５０では、第一の吐出管
５５と第二の吐出管５６の合流位置に三方弁５８が設け
られ、この三方弁５８の制御によって、第一の吐出管５
５と第二の吐出管５６のいずれかが管５７に選択的に連
通する。The refrigerant sucked from the suction port 53A of the one-stage compression section 53 is compressed to a high pressure by the compression section 53, then discharged from the discharge port 53B once into the shell case 51, and passed through the shell case 51. After that, the first discharge pipe 55 drawn from above the stator 52A or the second discharge pipe 5 drawn from below the stator 52A.
It is discharged to the downstream through the pipe 57 connected to any one of No. 6 and 6. In this hermetic compressor 50, a three-way valve 58 is provided at the confluence of the first discharge pipe 55 and the second discharge pipe 56, and the first discharge pipe 5 is controlled by the control of the three-way valve 58.
5 or the second discharge pipe 56 selectively communicates with the pipe 57.
【００２９】本実施形態においても、図２〜図４に示す
三方弁５８に関する制御を、略同様に実行可能であり、
略同様の効果を得ることができる。Also in this embodiment, the control relating to the three-way valve 58 shown in FIGS. 2 to 4 can be executed in substantially the same manner.
A substantially similar effect can be obtained.
【００３０】以上、一実施形態に基づいて本発明を説明
したが、本発明はこれに限定されるものでないことは明
らかである。例えば、上記弁は三方弁２５，５８に限定
されず、他の弁であってもよい。Although the present invention has been described based on the embodiment, it is obvious that the present invention is not limited to this. For example, the above valves are not limited to the three-way valves 25 and 58, and may be other valves.
【００３１】[0031]
【発明の効果】本発明では、電動機部の上方から導出さ
れる第一の吐出管と、電動機部の下方から導出される第
二の吐出管とを備え、第一の吐出管と第二の吐出管を下
流に選択的に連通させる弁を備えたため、この弁の制御
によって、圧縮機の吐出ガス温度を調整することができ
る。According to the present invention, a first discharge pipe led out from above the electric motor unit and a second discharge pipe led out from below the electric motor unit are provided. Since a valve that selectively connects the discharge pipe to the downstream side is provided, the discharge gas temperature of the compressor can be adjusted by controlling this valve.
【図１】本発明による冷凍装置の一実施形態を示す冷媒
回路図である。FIG. 1 is a refrigerant circuit diagram showing an embodiment of a refrigeration system according to the present invention.
【図２】Ａは出湯温度と時間の関係を示す図、Ｂは第一
の吐出管が選択された状態を示す図、Ｃは第二の吐出管
が選択された状態を示す図である。FIG. 2A is a diagram showing a relationship between tapping temperature and time, B is a diagram showing a state in which a first discharge pipe is selected, and C is a diagram showing a state in which a second discharge pipe is selected.
【図３】Ａは圧縮機温度と時間の関係を示す図、Ｂは第
一の吐出管が選択された状態を示す図、Ｃは第二の吐出
管が選択された状態を示す図である。3A is a diagram showing a relationship between compressor temperature and time, FIG. 3B is a diagram showing a state in which a first discharge pipe is selected, and FIG. 3C is a diagram showing a state in which a second discharge pipe is selected. .
【図４】Ａは除霜信号と時間の関係を示す図、Ｂは第一
の吐出管が選択された状態を示す図、Ｃは第二の吐出管
が選択された状態を示す図である。4A is a diagram showing a relationship between a defrost signal and time, FIG. 4B is a diagram showing a state in which a first discharge pipe is selected, and C is a diagram showing a state in which a second discharge pipe is selected. .
【図５】別の実施形態を示す図である。FIG. 5 is a diagram showing another embodiment.
１ 圧縮機 ３ ガスクーラ ５ 減圧装置 ７ 蒸発器 １１ シェルケース １２ 電動機部 １３ 圧縮部 ２１ 第一の吐出管 ２２ 第二の吐出管 ２３ 管 ２５ 三方弁（弁） ３５，３９ 除霜用電磁弁 Ｐ１ 中間圧 Ｐ２ 高圧 1 compressor 3 gas cooler 5 decompression device 7 evaporator 11 shell case 12 Electric motor section 13 Compressor 21 First discharge pipe 22 Second discharge pipe 23 tubes 25 three-way valve 35, 39 Defrosting solenoid valve P1 intermediate pressure P2 high pressure
Claims (4)
連結された圧縮部とを備え、この圧縮部から吐出される
冷媒をシェルケース内に吐出し、電動機部の上方から導
出される第一の吐出管と、電動機部の下方から導出され
る第二の吐出管とを備え、第一の吐出管と第二の吐出管
を下流に選択的に連通させる弁を備えたことを特徴とす
る密閉型圧縮機。1. A shell case includes an electric motor section and a compression section connected to a lower portion of the electric motor section. Refrigerant discharged from the compression section is discharged into the shell case and is drawn out from above the electric motor section. Discharge pipe and a second discharge pipe led out from below the electric motor section, and a valve for selectively connecting the first discharge pipe and the second discharge pipe to the downstream side. Hermetic compressor.
連結された二段圧縮式の圧縮部とを備え、一段圧縮部か
ら吐出される冷媒をシェルケース内に吐出し、電動機部
の上方から導出される第一の吐出管と、電動機部の下方
から導出される第二の吐出管とを備え、第一の吐出管と
第二の吐出管を二段圧縮部の吸込みポートに選択的に連
通させる弁を備えたことを特徴とする密閉型圧縮機。2. A shell case is provided with an electric motor section and a two-stage compression type compression section connected to the lower part of the electric case, and the refrigerant discharged from the first-stage compression section is discharged into the shell case from above the electric motor section. A first discharge pipe that is led out and a second discharge pipe that is led out from below the electric motor unit are provided, and the first discharge pipe and the second discharge pipe are selectively used as suction ports of the two-stage compression unit. A hermetic compressor characterized by having a valve for communicating.
機を備え、起動時や電動機部の発熱の多い場合、第一の
吐出管を通じて冷媒を吐出し、それ以外の定常運転時に
は、第二の吐出管を通じて冷媒を吐出するように、上記
弁を制御する手段を備えたことを特徴とする冷凍装置。3. The hermetic compressor according to claim 1 or 2, wherein the refrigerant is discharged through the first discharge pipe at the time of start-up or when a large amount of heat is generated in the electric motor section, and during other steady operation, A refrigerating apparatus comprising means for controlling the valve so as to discharge the refrigerant through the second discharge pipe.
機を備え、この圧縮機の吐出ガスを直接蒸発器に供給す
る除霜手段を備え、この除霜手段を動作させる場合、第
一の吐出管を通じて冷媒を吐出するように、上記弁を制
御する手段を備えたことを特徴とする冷凍装置。4. The hermetic compressor according to claim 1 or 2, further comprising defrosting means for directly supplying the discharge gas of the compressor to the evaporator. When operating the defrosting means, A refrigeration system comprising means for controlling the valve so as to discharge the refrigerant through one discharge pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001238971A JP3837307B2 (en) | 2001-08-07 | 2001-08-07 | Hermetic compressor and refrigeration apparatus using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001238971A JP3837307B2 (en) | 2001-08-07 | 2001-08-07 | Hermetic compressor and refrigeration apparatus using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003049777A true JP2003049777A (en) | 2003-02-21 |
| JP3837307B2 JP3837307B2 (en) | 2006-10-25 |
Family
ID=19069802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001238971A Expired - Fee Related JP3837307B2 (en) | 2001-08-07 | 2001-08-07 | Hermetic compressor and refrigeration apparatus using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3837307B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005069539A (en) * | 2003-08-22 | 2005-03-17 | Sanyo Electric Co Ltd | Dryer |
| JP2007263391A (en) * | 2006-03-27 | 2007-10-11 | Sanyo Electric Co Ltd | Refrigerating cycle device |
-
2001
- 2001-08-07 JP JP2001238971A patent/JP3837307B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005069539A (en) * | 2003-08-22 | 2005-03-17 | Sanyo Electric Co Ltd | Dryer |
| JP2007263391A (en) * | 2006-03-27 | 2007-10-11 | Sanyo Electric Co Ltd | Refrigerating cycle device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3837307B2 (en) | 2006-10-25 |
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