JPS6235589B2 - - Google Patents
Info
- Publication number
- JPS6235589B2 JPS6235589B2 JP11816082A JP11816082A JPS6235589B2 JP S6235589 B2 JPS6235589 B2 JP S6235589B2 JP 11816082 A JP11816082 A JP 11816082A JP 11816082 A JP11816082 A JP 11816082A JP S6235589 B2 JPS6235589 B2 JP S6235589B2
- Authority
- JP
- Japan
- Prior art keywords
- cold air
- temperature
- heat exchanger
- refrigerator
- freezer
- 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
Links
- 239000003507 refrigerant Substances 0.000 claims description 14
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
【発明の詳細な説明】
本発明は冷媒に非共沸の混合冷媒を使用した強
制対流式の冷凍冷蔵庫に関するもので、特に非共
沸混合冷媒の特性、つまり同一圧力条件のもとで
蒸発温度が変化することにより、冷却器入口部分
で低い温度を示し、出口部分で高い温度を示すこ
とに着目し効率の良い冷却器を構成し、効率の良
い運転を行なわしめる冷凍・冷蔵庫を提供するこ
とを目的としたものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a forced convection refrigerator-freezer using a non-azeotropic mixed refrigerant as a refrigerant. To provide a freezer/refrigerator capable of efficient operation by constituting an efficient cooler by paying attention to the fact that the inlet part of the cooler shows a low temperature and the outlet part shows a high temperature due to a change in temperature. The purpose is to
以下本発明の実施例を第１図〜第５図にもとず
き説明する。 Embodiments of the present invention will be described below with reference to FIGS. 1 to 5.
先ず第１図において１は冷蔵庫本体であり、冷
凍室２内に熱交換器３と該熱交換器３による冷気
を強制循環させるフアン４とを備え、冷気の吹出
口５と吸込口６を有するフアングリル７で上記冷
却器３及びフアン４とを冷凍室２から隔てる一
方、フアンの回転軸を中心とした周囲を覆い、か
つ前記フアングリル７の上記冷吹出口５とを連通
するベルマウス部８を有するマウスケース９をフ
アングリル７内壁面に沿つて設けている。また１
０は熱交換器３の背面を通つている冷蔵室１１へ
の冷気の吹出ダクトであり、上記ダクトの入口１
２はマウスケース９と連通されている。１３は冷
凍室２と冷蔵室１１を仕切るデイバーダー１４の
中に配置された冷蔵室１１からの冷気の吸込ダク
トである。 First, in FIG. 1, reference numeral 1 denotes a refrigerator body, which is equipped with a heat exchanger 3 and a fan 4 for forcibly circulating cold air from the heat exchanger 3 in a freezing chamber 2, and has a cold air outlet 5 and an inlet 6. While the fan grill 7 separates the cooler 3 and the fan 4 from the freezer compartment 2, a bell mouth part covers the periphery around the rotation axis of the fan and communicates with the cooling outlet 5 of the fan grill 7. A mouse case 9 having a diameter of 8 is provided along the inner wall surface of the fan grill 7. Also 1
0 is a cold air blowing duct to the refrigerator compartment 11 passing through the back side of the heat exchanger 3, and the inlet 1 of the duct is
2 communicates with the mouse case 9. Reference numeral 13 denotes a cold air suction duct from the refrigerator compartment 11 arranged in a day barder 14 that partitions the freezer compartment 2 and the refrigerator compartment 11.
かかる構成の冷凍・冷蔵庫には、非共沸混合冷
媒が封入されており蒸発気３については、第２
図、第３図に示すように、フイン列方向すなわち
冷気流れ方向中心線にはスリツト１６を入れ、非
共沸混合冷媒は、フインスリツト１６により熱伝
導を分割された一列側のパス風下より風上へ流
し、さらに他列がわの風下がわに入れ風上へと流
れるように冷媒パスを構成してある。 Freezers and refrigerators with such a configuration are filled with a non-azeotropic mixed refrigerant, and the evaporated air 3 is
As shown in Fig. 3, a slit 16 is provided in the fin row direction, that is, the center line in the cold air flow direction, and the non-azeotropic mixed refrigerant is placed upwind from the path leeward of the first row side where the heat conduction is divided by the fin slit 16. The refrigerant path is configured so that the refrigerant flows into the leeward side of the other row and flows upwind.
次に上記構成における熱交換器の作用を説明す
ると、まず冷気の循環経路としては、熱交換器３
によつて熱交換された冷気は、フアン４及びマウ
スケース９によつて冷凍室２及び冷蔵室１１にそ
れぞれ分配されて送りこまれそれぞれの室を冷却
するが、冷凍室２に分配された冷気はフアングリ
ル７の冷気の吹出口５を通り、冷凍室２内を循環
し、吸込口６に入る。また冷蔵室１１に分配され
た冷気は、その入口１２がマウスケース９と連通
された冷蔵室１１への冷気の吹出ダクト１０を通
り、冷蔵室内に送られ、冷蔵室１１内を循環し冷
蔵室１１からの冷気の吸込ダクト１３に入る。 Next, to explain the operation of the heat exchanger in the above configuration, first, as a circulation path for cold air, the heat exchanger 3
The cold air that has been heat exchanged by the fan 4 and the mouth case 9 is distributed to the freezer compartment 2 and the refrigerator compartment 11 and sent to cool each compartment, but the cold air distributed to the freezer compartment 2 is It passes through the cold air outlet 5 of the fan grill 7, circulates within the freezer compartment 2, and enters the suction port 6. Further, the cold air distributed to the refrigerator compartment 11 passes through a cold air blowing duct 10 to the refrigerator compartment 11 whose inlet 12 is in communication with the mouth case 9, is sent into the refrigerator compartment, circulates inside the refrigerator compartment 11, and is circulated inside the refrigerator compartment 11. The cold air from 11 enters the suction duct 13.
上記吸込ダクト１３に入つた冷蔵室１１に分配
された冷気と、上記フアングリル７の吸欠口６に
入つた冷凍室２に分配された冷気は、上記冷蔵室
１１からの吸込ダクト１３の出口１５で合流し、
再び上記熱交換器を通りここで熱交換され、循環
を繰り返す。 The cold air that has entered the suction duct 13 and has been distributed to the refrigerator compartment 11 and the cold air that has entered the intake port 6 of the fan grill 7 and has been distributed to the freezer compartment 2 are transferred from the refrigerator compartment 11 to the exit of the suction duct 13. We met at 15,
It passes through the heat exchanger again, where the heat is exchanged, and the circulation is repeated.
前記で述べたように非共沸混合冷媒は、同一圧
力条件のもとで温度が変化するすなわち熱交換器
入口部分３ａで低い温度を示し出口部分３ｂで高
い温度となる特性を有するが、もしここで低温の
入口部分３ａが高温の出口部分３ｂに対して風
上、つまり冷気に対して並行流であつたとすると
第４図に示すとおり吹出し温度Ta2は、熱交換器
の出口つまり高温度ＴR2以下には低下できず、温
度効率は満足できるものとはならない。 As mentioned above, the non-azeotropic mixed refrigerant has the characteristic that the temperature changes under the same pressure condition, that is, it has a low temperature at the heat exchanger inlet section 3a and a high temperature at the outlet section 3b. Here, if the low-temperature inlet section 3a is upwind of the high-temperature outlet section 3b, that is, the flow is parallel to the cold air, the blowout temperature Ta 2 is equal to the high temperature at the exit of the heat exchanger, as shown in Fig. 4. It cannot be lowered below T R2 , and the temperature efficiency will not be satisfactory.
本実施例によれば第１に、フイン列方向すなわ
ち冷気流れ方向にスリツト１６を有することによ
り高温側パスの温度の影響を低温側へ及ぼすこと
を解消し、フイン温度の上昇を防ぐとともに、第
２には、フインスリツトにより分割された各パス
を冷気流れに対して対向流としている為、冷気の
温度変化は第５図に示すようになる。つまり各パ
ス、高温パス、低温パスにおいて対向流となつて
いる為、冷気は効率よく低下でき、（ＴR′
2Ta2″）出口にて混合し各々冷凍室・冷蔵室に送
られる。（Ta＞Ta3＝Ｔａ″２＋Ｔａ′２／２）第３に
は、冷
凍、冷蔵庫の温度範囲は必ず着霜領域で運転され
るが、冷媒パスを高温側と低温側に分割している
ことと合せ前述のとおり蒸発温度は、蒸発が進む
につれて上昇するので、冷気の除湿は熱交換器の
通過にしたがつて進み各パスの最低温度域におい
ては低温度の冷気となる。この為着霜の発達はゆ
るやかなものとなる。 According to this embodiment, firstly, by having the slits 16 in the fin row direction, that is, in the cold air flow direction, it is possible to eliminate the influence of the temperature of the high temperature side path on the low temperature side, prevent an increase in the fin temperature, and 2, each path divided by the fin slits is made to flow in a direction opposite to the flow of cold air, so that the temperature change of the cold air is as shown in FIG. In other words, since there are counterflows in each pass, the high temperature pass, and the low temperature pass, the cold air can be reduced efficiently, and (T R ′
2 Ta 2 '') are mixed at the outlet and sent to the freezer and refrigerator compartments respectively. (Ta > Ta 3 = Ta'' 2 + Ta' 2 /2) Thirdly, the temperature range of the freezer and refrigerator must be such that frost formation does not occur. However, since the refrigerant path is divided into high-temperature and low-temperature sides, and as mentioned above, the evaporation temperature increases as evaporation progresses, cold air is dehumidified by passing through a heat exchanger. In the lowest temperature region of each pass, the air becomes cold. For this reason, frost develops slowly.
さらに低温多湿条件下においては低温側パスの
低温域より着霜がはじまり高温側パスへと進む
為、低温側パスが目づまり状態においても高温側
パスは、徐々に低温となり着霜が進むこととな
り、長時間効率よい運転を保持できることにな
る。 Furthermore, under low temperature and high humidity conditions, frost formation starts from the low temperature area of the low temperature side path and progresses to the high temperature side path, so even if the low temperature side path is clogged, the high temperature side path will gradually become colder and frost will progress. This means that efficient operation can be maintained for a long time.
本発明は以上説明したように、非共沸の混合冷
媒を使用した強制対流式冷凍冷蔵庫において、熱
交換器の構成を、フインの列方向である冷気の流
れ方向中心線上にスリツトを設けて蒸発温度差に
よるフインの温度上昇を防ぐとともに、フインス
リツトにより分割され形状されたパスの一列側の
冷気に対して風下より風上へ流し、さらに他列が
わの風下がわに入れ風上へと流れるようにしてあ
る、つまり各パス対向流としてある為、効率の良
い熱交換を行なわしめるとともに、着霜もゆるや
かとなり効率の良い運転も長時間保持できる等性
能の向上を達し得るという実用効果大なるもので
ある。 As explained above, in a forced convection refrigerator-freezer using a non-azeotropic mixed refrigerant, the present invention has a heat exchanger structure in which slits are provided on the center line in the flow direction of cold air, which is the direction of the rows of fins. In addition to preventing the temperature of the fins from rising due to temperature differences, the cool air from one row of the path divided by the fin slits is directed from leeward to upwind, and then into the leeward side of the other rows to flow upwind. In other words, since each path has counterflow, it not only allows efficient heat exchange, but also has the practical effect of achieving improvements in performance, such as gentle frost formation and long-term maintenance of efficient operation. It is something.
第１図は本発明の冷凍冷蔵庫を示す縦断面図、
第２図は第１図の要部を示す正面図、第３図は第
２図の側面図、第４図及び第５図は本発明による
冷媒と空気の温度変化特性図である。
１は冷蔵庫本体、２は冷凍室、３は蒸発器、３
ａは冷媒入口部、３ｂは冷媒出口部、４はフア
ン、５は冷気吹出口、６は吸込口、７はフアング
リル、８はベルマウス部、９はマウスケース、１
０は吹出ダクト、１１は冷蔵室、１２は吹出ダク
ト入口、１３は吸込ダクト、１４はデイバイダ
ー、１５は吸込ダクト出口、１６はフインのスリ
ツトを示している。
FIG. 1 is a longitudinal sectional view showing a refrigerator-freezer of the present invention;
2 is a front view showing the main part of FIG. 1, FIG. 3 is a side view of FIG. 2, and FIGS. 4 and 5 are temperature change characteristic diagrams of refrigerant and air according to the present invention. 1 is the refrigerator body, 2 is the freezer compartment, 3 is the evaporator, 3
a is a refrigerant inlet, 3b is a refrigerant outlet, 4 is a fan, 5 is a cold air outlet, 6 is an inlet, 7 is a fan grill, 8 is a bell mouth, 9 is a mouth case, 1
0 is a blow-off duct, 11 is a refrigerating room, 12 is a blow-off duct inlet, 13 is a suction duct, 14 is a divider, 15 is a suction duct outlet, and 16 is a fin slit.
Claims (1)
冷蔵庫において、ヘアピンチユーブとフインで構
成される熱交換器の冷気流れ方向中心線にスリツ
トを設け、かつ非共沸混合冷媒流れを風の流れに
対し、フインのスリツトにより形成される一列側
の風下より風上へ流し、さらに、他列がわの風下
がわに入れ風上へと流れるように構成したことを
特徴とする熱交換器を有する冷凍冷蔵庫。1 In a forced convection refrigerator-freezer using a non-azeotropic mixed refrigerant, a slit is provided in the center line of the cold air flow direction of the heat exchanger consisting of hair pinch tubes and fins, and the flow of the non-azeotropic mixed refrigerant is A heat exchanger characterized in that the heat exchanger is configured such that the flow flows from the leeward side of one row formed by the slits of the fins to the windward side, and further flows from the leeward side of the other row side to the windward side. A refrigerator with a freezer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11816082A JPS599471A (en) | 1982-07-07 | 1982-07-07 | Freezing-refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11816082A JPS599471A (en) | 1982-07-07 | 1982-07-07 | Freezing-refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS599471A JPS599471A (en) | 1984-01-18 |
| JPS6235589B2 true JPS6235589B2 (en) | 1987-08-03 |
Family
ID=14729582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11816082A Granted JPS599471A (en) | 1982-07-07 | 1982-07-07 | Freezing-refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS599471A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0617814Y2 (en) * | 1987-06-05 | 1994-05-11 | 株式会社日立ビルシステムサービス | Elevator emergency call device |
| JP2659445B2 (en) * | 1990-01-09 | 1997-09-30 | 株式会社日立ビルシステム | Elevator emergency call system |
| JP2017203601A (en) * | 2016-05-13 | 2017-11-16 | 富士電機株式会社 | Cooler and showcase |
-
1982
- 1982-07-07 JP JP11816082A patent/JPS599471A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS599471A (en) | 1984-01-18 |
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