JPS61197485U - - Google Patents
Info
- Publication number
- JPS61197485U JPS61197485U JP1985079378U JP7937885U JPS61197485U JP S61197485 U JPS61197485 U JP S61197485U JP 1985079378 U JP1985079378 U JP 1985079378U JP 7937885 U JP7937885 U JP 7937885U JP S61197485 U JPS61197485 U JP S61197485U
- Authority
- JP
- Japan
- Prior art keywords
- evaporator
- refrigerant
- mode
- expansion valve
- condenser
- 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
- 239000003507 refrigerant Substances 0.000 claims description 10
- 238000007710 freezing Methods 0.000 claims description 3
- 230000008014 freezing Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims 3
- 238000010257 thawing Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Freezers Or Refrigerated Showcases (AREA)
- Defrosting Systems (AREA)
- Removal Of Water From Condensation And Defrosting (AREA)
Description
第１図は本考案に使用される冷媒回路の一例を
示した図、第２図は第１図における電磁弁、ヒー
タのオン、オフタイミングを示したチヤート図、
第３図は本考案が適用される冷凍・冷蔵シヨーケ
ースの縦断面図、第４図は従来の冷媒回路図。
図中、２２，２３は蒸発器、２５は圧縮機、２
６は凝縮器、２７ａ〜２７ｅは電磁弁、２８ａ〜
２８ｄは逆止弁、３０，３１は温度式自動膨脹弁
、３０ａ，３１ａは感温筒、３２，３３はヒータ
。
Fig. 1 is a diagram showing an example of the refrigerant circuit used in the present invention, Fig. 2 is a chart showing the on/off timing of the solenoid valve and heater in Fig. 1,
FIG. 3 is a longitudinal sectional view of a freezing/refrigerating case to which the present invention is applied, and FIG. 4 is a conventional refrigerant circuit diagram. In the figure, 22 and 23 are evaporators, 25 is a compressor, 2
6 is a condenser, 27a-27e are solenoid valves, 28a-
28d is a check valve, 30 and 31 are temperature-type automatic expansion valves, 30a and 31a are temperature-sensitive tubes, and 32 and 33 are heaters.
Claims (1)
発器を含み、凝縮器からの冷媒をそのまま第１の
蒸発器に送り除霜運転し、その冷媒を膨脹弁を通
して第２の蒸発器に送り冷却運転する第１のモー
ド、凝縮器からの冷媒をそのまま第２の蒸発器に
送り除霜運転し、その冷媒を膨脹弁を通して、第
１の蒸発器に送り冷却運転する第２のモード、並
びに凝縮器からの冷媒を膨脹弁を通して第１及び
第２の蒸発器に送り冷却運転する第３のモード、
第１（第２）のモード終了時より第１（第２）の
蒸発器への冷媒供給を停止して該第１（第２）の
蒸発器内の冷媒を膨脹弁を通して第２（第１）の
蒸発器へ移行せしめつつ冷却運転する第４（第５
）のモードを有する冷媒回路を備えた冷凍・冷蔵
シヨーケースにおいて、膨脹弁として感温筒を備
えた温度式自動膨脹弁を使用して前記感温筒を対
応する蒸発器の出側に配置し、各感温筒にはヒー
タを配設して第４（第５）モード運転中は第２（
第１）の蒸発器側の感温筒を加熱するようにした
ことを特徴とする冷凍・冷蔵シヨーケース。 It includes two systems of evaporators placed in the air passage inside the case body, and the refrigerant from the condenser is directly sent to the first evaporator for defrosting operation, and the refrigerant is sent to the second evaporator through the expansion valve. A first mode of cooling operation, a second mode of sending the refrigerant from the condenser as it is to the second evaporator for defrosting operation, and sending the refrigerant through the expansion valve to the first evaporator for cooling operation; a third mode in which refrigerant from the condenser is sent to the first and second evaporators through an expansion valve for cooling operation;
At the end of the first (second) mode, the refrigerant supply to the first (second) evaporator is stopped and the refrigerant in the first (second) evaporator is passed through the expansion valve to the second (first) evaporator. ) to the evaporator of the fourth (fifth)
) in a freezing/refrigerating case equipped with a refrigerant circuit having a mode, a thermostatic automatic expansion valve equipped with a temperature-sensing cylinder is used as an expansion valve, and the temperature-sensing cylinder is disposed on the outlet side of the corresponding evaporator, Each thermosensor cylinder is equipped with a heater, and during operation in the 4th (5th) mode, the 2nd (5th)
1) A freezing/refrigerating case characterized in that the temperature-sensitive tube on the evaporator side is heated.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7937885U JPH0224071Y2 (en) | 1985-05-29 | 1985-05-29 | |
| GB08523067A GB2167543B (en) | 1984-11-26 | 1985-09-18 | Refrigerated display cabinet |
| KR1019850007128A KR910008696B1 (en) | 1984-11-16 | 1985-09-27 | Refrigerated display case |
| CN85107580A CN1003157B (en) | 1984-11-26 | 1985-10-17 | Refrigerated display cabinet |
| US06/792,606 US4644758A (en) | 1984-11-26 | 1985-10-29 | Refrigerated display cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7937885U JPH0224071Y2 (en) | 1985-05-29 | 1985-05-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61197485U true JPS61197485U (en) | 1986-12-09 |
| JPH0224071Y2 JPH0224071Y2 (en) | 1990-07-02 |
Family
ID=30624235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7937885U Expired JPH0224071Y2 (en) | 1984-11-16 | 1985-05-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0224071Y2 (en) |
-
1985
- 1985-05-29 JP JP7937885U patent/JPH0224071Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0224071Y2 (en) | 1990-07-02 |
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