JPH0459546B2 - - Google Patents
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- Publication number
- JPH0459546B2 JPH0459546B2 JP60047023A JP4702385A JPH0459546B2 JP H0459546 B2 JPH0459546 B2 JP H0459546B2 JP 60047023 A JP60047023 A JP 60047023A JP 4702385 A JP4702385 A JP 4702385A JP H0459546 B2 JPH0459546 B2 JP H0459546B2
- Authority
- JP
- Japan
- Prior art keywords
- compressor
- refrigerant
- heat exchanger
- heat
- heat storage
- 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.)
- Expired - Lifetime
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は冷凍装置に関するものである。[Detailed description of the invention] [Industrial application field] This invention relates to a refrigeration system.
第２図は従来の冷凍装置の冷媒系統図である。 FIG. 2 is a refrigerant system diagram of a conventional refrigeration system.
第２図において、１は圧縮機、２は圧縮機１で
圧縮されたガス冷媒を通す吐出配管、３は蓄熱材
３1を収容した蓄熱槽、4は圧縮されたガス冷媒の
熱を蓄熱材３1と熱交換する熱交換器、５は熱交
換器4の出入口をバイパスするバイパス配管、６
は凝縮器、７は凝縮器６で凝縮した液冷媒を通す
液配管、８は液配管７に設けた電磁弁、９は吐出
配管２は液配管７の電磁弁８出口側部分とを接続
するパイパス配管、１０はバイパス配管９に設け
た高温ガス冷媒電磁弁、１１は膨張弁などの熱膨
張機構、１２は膨張機構１１をバイパスするバイ
パス電磁弁、１３は蒸発器、１４は蒸発器１３の
出口と圧縮機１を接続する吸入配管、１５は吸入
配管１４に設けた吸入側電磁弁、１７は吸入側電
磁弁１６をバイパスし減圧弁１６を介して蓄熱槽
３内に設け、蓄熱材３1と熱交換する吸入側熱交
換器である。 In Fig. 2, 1 is a compressor, 2 is a discharge pipe through which the gas refrigerant compressed by the compressor 1 passes, 3 is a heat storage tank containing a heat storage material 31 , and 4 is a heat storage material that stores the heat of the compressed gas refrigerant. 3 A heat exchanger that exchanges heat with 1 , 5 a bypass pipe that bypasses the entrance and exit of the heat exchanger 4 , 6
7 is a condenser, 7 is a liquid pipe that passes the liquid refrigerant condensed in the condenser 6, 8 is a solenoid valve provided in the liquid pipe 7, and 9 is a discharge pipe 2 that connects the outlet side portion of the solenoid valve 8 of the liquid pipe 7. Bypass piping, 10 is a high temperature gas refrigerant solenoid valve provided in the bypass piping 9, 11 is a thermal expansion mechanism such as an expansion valve, 12 is a bypass solenoid valve that bypasses the expansion mechanism 11, 13 is an evaporator, and 14 is the evaporator 13. A suction pipe connecting the outlet and the compressor 1, 15 a suction side solenoid valve provided in the suction pipe 14, 17 bypassing the suction side solenoid valve 16 and installed in the heat storage tank 3 via the pressure reducing valve 16, and the heat storage material 3 This is a suction side heat exchanger that exchanges heat with 1 .
次に、この冷凍装置の動作について説明する。
冷却運転中は、圧縮機１で圧縮された高温のガス
冷媒が吐出配管２を通り、熱交換器４で蓄熱槽３
内の蓄熱材３1と熱交換し、蓄熱材３1に熱を蓄え
る。一部のガス冷媒は熱交換器４を通ることな
く、バイパス配管５を通り熱交換器４を出た冷媒
と合流して凝縮器へ入る。冷却運転時には、液配
管７の電磁弁８、吸入側電磁弁１５は開、高温ガ
ス冷媒電磁弁１０、バイパス電磁弁１２は閉であ
るため、凝縮器６で凝縮した液冷媒は液配管７を
通り、膨張機構１１で減圧され、蒸発器１３で蒸
発し、被冷却物を冷却し、さらに吸入配管１４、
吸入側電磁弁１５を通り、再び圧縮機１へ戻る。
なお、バイパス配管５は蓄熱材３1の過熱を防止
するためのものである。 Next, the operation of this refrigeration system will be explained.
During cooling operation, high-temperature gas refrigerant compressed by the compressor 1 passes through the discharge pipe 2 and is transferred to the heat storage tank 3 by the heat exchanger 4.
It exchanges heat with the heat storage material 3 1 inside and stores heat in the heat storage material 3 1 . A part of the gas refrigerant passes through the bypass pipe 5 without passing through the heat exchanger 4, joins with the refrigerant exiting the heat exchanger 4, and enters the condenser. During cooling operation, the solenoid valve 8 and the suction side solenoid valve 15 of the liquid pipe 7 are open, and the high temperature gas refrigerant solenoid valve 10 and the bypass solenoid valve 12 are closed, so that the liquid refrigerant condensed in the condenser 6 flows through the liquid pipe 7. The pressure is reduced by the expansion mechanism 11, evaporated by the evaporator 13, and the object to be cooled is cooled.
It passes through the suction side solenoid valve 15 and returns to the compressor 1 again.
Note that the bypass pipe 5 is for preventing the heat storage material 3 1 from overheating.
また、除霜時にも、液配管７の電磁弁８、吸入
側電磁弁１５は開、高温ガス冷媒電磁弁１０、バ
イパス電磁弁１２は開になる。そして、圧縮機１
で圧縮された高温のガス冷媒は、吐出配管２、熱
交換器４、バイパス配管９、高温ガス冷媒電磁弁
１０、液配管７、バイパス電磁弁１２を通り、蒸
発器１３に供給される。蒸発器１３で、高温のガ
ス冷媒は蒸発器１３に付着した霜と熱交換し、霜
を融解除去すると共に液化する。蒸発器１３を液
化して出た冷媒は吸入配管１４から減圧弁１６に
よつて減圧され、吸入側熱交換器１７に入り、蓄
熱槽３内の蓄熱材３1と熱交換し、再蒸発して圧
縮機１へ戻る。 Also, during defrosting, the solenoid valve 8 of the liquid pipe 7 and the suction side solenoid valve 15 are opened, and the high temperature gas refrigerant solenoid valve 10 and the bypass solenoid valve 12 are opened. And compressor 1
The compressed high-temperature gas refrigerant passes through the discharge pipe 2, the heat exchanger 4, the bypass pipe 9, the high-temperature gas refrigerant solenoid valve 10, the liquid pipe 7, and the bypass solenoid valve 12, and is supplied to the evaporator 13. In the evaporator 13, the high-temperature gas refrigerant exchanges heat with the frost adhering to the evaporator 13, melts and removes the frost, and liquefies the refrigerant. The refrigerant discharged from the evaporator 13 is depressurized from the suction pipe 14 by the pressure reducing valve 16, enters the suction side heat exchanger 17, exchanges heat with the heat storage material 31 in the heat storage tank 3, and reevaporates. and return to compressor 1.
上述のような従来の冷凍装置では、蓄熱槽３を
バイパスするバイパス配管５のサイズが除霜手段
に組合せる圧縮機１の最大容量で選定され、この
場合に、蓄熱槽３内の蓄熱材３1が沸騰しないよ
うに選定される。このため、小容量の圧縮機１と
組合せると、バイパス配管５の径が大きいことに
より、熱交換器４を通るガス冷媒が少なくなつ
て、冷媒流速の低下により蓄熱材３１との熱交換
量が少なくなり、除霜運転時に液化した冷媒の再
蒸発熱量が低下し、除霜不良や液バツクを生ずる
という問題点があつた。
In the conventional refrigeration system as described above, the size of the bypass pipe 5 that bypasses the heat storage tank 3 is selected based on the maximum capacity of the compressor 1 combined with the defrosting means. 1 is selected so that it does not boil. Therefore, when combined with a small-capacity compressor 1, the large diameter of the bypass pipe 5 reduces the amount of gas refrigerant passing through the heat exchanger 4, reducing the amount of heat exchanged with the heat storage material 31 due to a decrease in the refrigerant flow rate. As a result, the amount of heat of re-evaporation of the liquefied refrigerant during defrosting operation decreases, resulting in defrosting failure and liquid backlash.
この発明は、上述した問題点を解決して、小容
量の圧縮機から大容量の圧縮機まで、良好な除霜
ができる冷凍装置を提供することを目的としてい
る。 An object of the present invention is to solve the above-mentioned problems and provide a refrigeration system that can perform good defrosting for both small-capacity compressors and large-capacity compressors.
この発明は、上述のような冷凍装置において、
熱交換器のバイパス配管に圧縮機の容量に応じて
開度調整が可能な開閉弁を設けたものである。
The present invention provides a refrigeration system as described above.
The bypass piping of the heat exchanger is equipped with an on-off valve whose opening degree can be adjusted according to the capacity of the compressor.
この発明による冷凍装置は、開閉弁を小容量の
圧縮機の場合には閉じまたは開度を小さくし、大
容量の圧縮機の場合には開きまたは開度を大きく
し、圧縮した高温の冷媒がバイパス配管および熱
交換器を通る量を制御することができ、小容量の
圧縮機の場合には蓄熱材への蓄熱不足を防止し、
これに起因する除霜不良や液バツクをなくし、ま
た大容量の圧圧縮機の場合には蓄熱材の過熱を防
止できる。
In the refrigeration system according to the present invention, the on-off valve is closed or the opening degree is small in the case of a small capacity compressor, and it is opened or the opening degree is large in the case of a large capacity compressor, so that the compressed high temperature refrigerant is It is possible to control the amount of heat passing through the bypass piping and heat exchanger, and in the case of small capacity compressors, prevents insufficient heat storage in the heat storage material.
Defrosting defects and liquid backlogs caused by this can be eliminated, and in the case of a large-capacity compressor, overheating of the heat storage material can be prevented.
〔実施例〕
以下、この発明の一実施例を第１図によつて説
明する。[Embodiment] An embodiment of the present invention will be described below with reference to FIG.
第１図において、第２図と同一符号は相当部分
を示し、１８は熱交換器４をバイパスするバイパ
ス配管５の途中に設けた開閉弁である。なお、こ
の実施例の上述した以外の構成は第２図に示す従
来のものと同様である。 In FIG. 1, the same reference numerals as in FIG. 2 indicate corresponding parts, and 18 is an on-off valve provided in the middle of bypass piping 5 that bypasses heat exchanger 4. In FIG. The structure of this embodiment other than the above is the same as the conventional one shown in FIG.
次に、この実施例の冷凍装置の動作について説
明する。 Next, the operation of the refrigeration system of this embodiment will be explained.
圧縮機１が大容量である場合には、開閉弁１８
を開き、上述した従来の冷凍装置と同様な冷却お
よび除霜運転を行う。 When the compressor 1 has a large capacity, the on-off valve 18
, and performs cooling and defrosting operations similar to those of the conventional refrigeration system described above.
圧縮機１の容量が小さい場合には、開閉弁１８
を閉じる。冷却運転中は、圧縮機１で圧縮された
高温のガス冷媒が吐出配管２を通り、全量の高温
のガス冷媒が蓄熱槽３内の熱交換器４へ流入し、
蓄熱材３1と熱交換して凝縮器６へ入る。液配管
７の電磁弁８、吸入側電磁弁１５は開、高温ガス
冷媒電磁弁１０、バイパス電磁弁１２は閉である
ため、凝縮器６で液化した冷媒は液配管７を通
り、膨張機構１１で減圧され、蒸発器１３で蒸発
し、吸入配管１４、吸入側電磁弁１５を通り、圧
縮機１へ戻る。 If the capacity of the compressor 1 is small, the on-off valve 18
Close. During the cooling operation, the high temperature gas refrigerant compressed by the compressor 1 passes through the discharge pipe 2, and the entire amount of the high temperature gas refrigerant flows into the heat exchanger 4 in the heat storage tank 3.
It exchanges heat with the heat storage material 31 and enters the condenser 6. Since the solenoid valve 8 and the suction side solenoid valve 15 of the liquid pipe 7 are open, and the high temperature gas refrigerant solenoid valve 10 and the bypass solenoid valve 12 are closed, the refrigerant liquefied in the condenser 6 passes through the liquid pipe 7 and expands into the expansion mechanism 11. It is depressurized, evaporated in the evaporator 13, passes through the suction pipe 14 and the suction-side electromagnetic valve 15, and returns to the compressor 1.
また、除霜時には、液配管７の電磁弁８、吸入
側電磁弁１５は閉、高温ガス冷媒電磁弁１０、バ
イパス電磁弁１２は開になる。圧縮機１で圧縮さ
れた高温のガス冷媒は、吐出配管２、熱交換器
４、バイパス配管９、高温ガス冷媒電磁弁１０、
液配管７、バイパス電磁弁１２を通り、蒸発器１
３に供給される。蒸発器１３で、高温のガス冷媒
は蒸発器１３に付着した霜と熱交換し、除霜を行
うと共に液化する。液化した冷媒は、蒸発器１３
から吸入配管１４を通り、減圧弁１６で減圧さ
れ、蓄熱槽３内の吸入側熱交換器１７で蓄熱材３
１と熱交換して蒸発する。この場合に、圧縮機１
から吐出された高温の冷媒ガスの全量が熱交換機
４へ流入するため、蓄熱材３１には十分に蓄熱さ
れており、この蓄熱材３1から吸入側熱交換器１
７で液冷媒が熱を受けるので、液冷媒は確実に蒸
発して圧縮機１へ戻る。 Further, during defrosting, the solenoid valve 8 of the liquid pipe 7 and the suction side solenoid valve 15 are closed, and the high temperature gas refrigerant solenoid valve 10 and the bypass solenoid valve 12 are opened. The high temperature gas refrigerant compressed by the compressor 1 is delivered to a discharge pipe 2, a heat exchanger 4, a bypass pipe 9, a high temperature gas refrigerant solenoid valve 10,
The liquid pipe 7 passes through the bypass solenoid valve 12, and the evaporator 1
3. In the evaporator 13, the high-temperature gas refrigerant exchanges heat with the frost attached to the evaporator 13, defrosts it, and liquefies it. The liquefied refrigerant is transferred to the evaporator 13
The heat storage material 3 passes through the suction piping 14, is depressurized by the pressure reducing valve 16, and is transferred to the heat storage material 3 by the suction side heat exchanger 17 in the heat storage tank 3.
Evaporates by exchanging heat with 1. In this case, compressor 1
Since the entire amount of high-temperature refrigerant gas discharged from the heat exchanger 4 flows into the heat exchanger 4, sufficient heat is stored in the heat storage material 31 .
Since the liquid refrigerant receives heat at step 7, the liquid refrigerant reliably evaporates and returns to the compressor 1.
なお、上述した実施例では、開閉弁１８を開閉
のみにしたが、この発明では開閉弁を圧縮機の容
量に同じ開度を変化させる制御にしてもよい。 In the above-described embodiment, the on-off valve 18 is only opened and closed, but in the present invention, the on-off valve may be controlled to change the opening degree the same as the capacity of the compressor.
〔発明の効果〕
以上説明したように、この発明によれば、圧縮
機で圧縮した高温の冷媒を、蓄熱材と熱交換する
熱交換器をバイパスして、凝縮器側に導くバイパ
ス配管に圧縮機の容量に応じて開口が調整可能な
開閉弁を設けたので、この開閉弁を小容量の圧縮
機の場合には閉じ、大容量の圧縮機の場合には開
くことで、小容量の圧縮機の場合には蓄熱材への
蓄熱不足を防止し、除霜不良や液バツクをなくす
ことができ、大容量の圧縮機の場合には蓄熱材の
過熱を防止でき、しかも開口が調整可能であるこ
とから、１台の蓄熱槽で大容量から小容量の圧縮
機の組み合わせが可能となり、汎用性の高い冷凍
機が得られる効果がある。[Effects of the Invention] As explained above, according to the present invention, the high temperature refrigerant compressed by the compressor is compressed into the bypass pipe leading to the condenser side, bypassing the heat exchanger that exchanges heat with the heat storage material. We have installed an on-off valve whose opening can be adjusted according to the capacity of the machine, so this on-off valve can be closed for small-capacity compressors and opened for large-capacity compressors, allowing compression of small volumes. In the case of a compressor, it prevents insufficient heat storage in the heat storage material and eliminates defrosting defects and liquid back-up.In the case of a large-capacity compressor, it prevents the heat storage material from overheating, and the opening can be adjusted. Because of this, it is possible to combine large-capacity to small-capacity compressors in one heat storage tank, which has the effect of providing a highly versatile refrigerator.
第１図はこの発明による冷凍装置の一実施例を
示す冷媒系統図、第２図は従来例の冷凍装置を示
す冷媒系統図である。
１……圧縮機、２……吸入配管、３……蓄熱
槽、３1……蓄熱材、４……熱交換器、５……バ
イパス配管、６……凝縮器、１１……膨張機構、
１３……蒸発器、１４……吸入配管、１７……吸
入側熱交換器、１８……開閉弁。なお、図中同一
符号は同一または相当部分を示す。
FIG. 1 is a refrigerant system diagram showing an embodiment of a refrigeration system according to the present invention, and FIG. 2 is a refrigerant system diagram showing a conventional refrigeration system. 1... Compressor, 2... Suction piping, 3... Heat storage tank, 3 1 ... Heat storage material, 4... Heat exchanger, 5... Bypass piping, 6... Condenser, 11... Expansion mechanism,
13...Evaporator, 14...Suction piping, 17...Suction side heat exchanger, 18...Opening/closing valve. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
高温の冷媒を蓄熱材と熱交換する熱交換器と、こ
の熱交換器を通つた冷媒を凝縮させる凝縮器と、
凝縮器で凝縮させ膨張機構で減圧させた冷媒を蒸
発させ被冷却物を冷却する蒸発器とを配管で接続
すると共に、上記蓄熱材と熱交換する吸入側熱交
換器を有し、除霜時に圧縮機で圧縮した高温の冷
媒を蒸発器に供給し、蒸発器から出た液状の冷媒
を吸入側熱交換器で再蒸発させ、圧縮器に吸入さ
せるようにした冷凍装置において、上記圧縮機の
容量に応じて開度が調整可能な開閉弁を、圧縮機
で圧縮した高温の冷媒を熱交換器をバイパスして
凝縮器側に導くバイパス配管に設けたことを特徴
とする冷凍装置。1. A compressor that compresses a refrigerant, a heat exchanger that exchanges heat with a heat storage material for the high-temperature refrigerant compressed by the compressor, and a condenser that condenses the refrigerant that has passed through the heat exchanger.
The refrigerant condensed in the condenser and depressurized in the expansion mechanism is evaporated to cool the object to be cooled.The refrigerant is connected by piping to the evaporator, which cools the object to be cooled. In a refrigeration system in which high-temperature refrigerant compressed by a compressor is supplied to an evaporator, liquid refrigerant discharged from the evaporator is re-evaporated in a suction side heat exchanger, and then sucked into the compressor. A refrigeration system characterized in that an on-off valve whose opening degree can be adjusted according to capacity is provided in a bypass pipe that guides high-temperature refrigerant compressed by a compressor to a condenser side bypassing a heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4702385A JPS61205755A (en) | 1985-03-08 | 1985-03-08 | Refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4702385A JPS61205755A (en) | 1985-03-08 | 1985-03-08 | Refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61205755A JPS61205755A (en) | 1986-09-11 |
| JPH0459546B2 true JPH0459546B2 (en) | 1992-09-22 |
Family
ID=12763581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4702385A Granted JPS61205755A (en) | 1985-03-08 | 1985-03-08 | Refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61205755A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5108923B2 (en) * | 2010-09-09 | 2012-12-26 | パナソニック株式会社 | Air conditioner |
| JP5310696B2 (en) * | 2010-10-15 | 2013-10-09 | パナソニック株式会社 | Air conditioner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3130287A1 (en) * | 1981-07-31 | 1983-02-17 | Robert Bosch Gmbh, 7000 Stuttgart | Sealed line bushing through a housing wall, especially through a wall of an electric drive motor, which is located in the fuel, of a fuel feed unit |
-
1985
- 1985-03-08 JP JP4702385A patent/JPS61205755A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61205755A (en) | 1986-09-11 |
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