JPH0490478A - Freezer device - Google Patents
Freezer deviceInfo
- Publication number
- JPH0490478A JPH0490478A JP2206269A JP20626990A JPH0490478A JP H0490478 A JPH0490478 A JP H0490478A JP 2206269 A JP2206269 A JP 2206269A JP 20626990 A JP20626990 A JP 20626990A JP H0490478 A JPH0490478 A JP H0490478A
- Authority
- JP
- Japan
- Prior art keywords
- evaporator
- blower
- solenoid valve
- defrosting
- evaporators
- 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
- 238000010257 thawing Methods 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000005057 refrigeration Methods 0.000 claims description 13
- 239000003507 refrigerant Substances 0.000 claims description 7
- 238000007710 freezing Methods 0.000 abstract 1
- 230000008014 freezing Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
-
- 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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
-
- 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
- F25B2600/00—Control issues
- F25B2600/11—Fan speed control
- F25B2600/112—Fan speed control of evaporator fans
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2521—On-off valves controlled by pulse signals
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野〕
この発明は、庫内温度の制御に高い精度が要求される冷
凍装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a refrigeration system that requires high accuracy in controlling the temperature inside the refrigerator.
第３および４図は三菱電気ユニットクーラのカタロクＲ
−ｃ２５６７−Ｂ （昭和５９年７月発行）にあるよう
な従来の冷凍装置の蒸発器部分を示す構造図であり、図
において、（４１）は多数のプレートフィン（４１ａ
）と、これらを貫通する冷却管（４１ｂ ）からなる蒸
発器、（４２）は蒸発器（４１）のプレートフィン（４
１ａ ）に熱交換状態に配設された除霜ヒータである。Figures 3 and 4 are Mitsubishi Electric unit cooler catalog R.
-c2567-B (published in July 1982) is a structural diagram showing the evaporator part of a conventional refrigeration system, and in the figure, (41) is a large number of plate fins (41a
) and a cooling pipe (41b) passing through them, (42) is a plate fin (4) of the evaporator (41).
1a) is a defrosting heater arranged in a heat exchange state.
蒸発器（４１）と除霜ヒータ（４２）と送風機（１６）
は筐体（５０）に収納され、冷蔵庫り３０）に図示のよ
うな状態に取付けられている。Evaporator (41), defrost heater (42), and blower (16)
is housed in a casing (50) and attached to the refrigerator (30) as shown in the figure.
（発明ぜ解決しようとする課題〕
このような構造において、冷却運転を続行していると蒸
発器（４１）に着霜が生じ、除霜用のタイマ（図示せず
）が動作すると、除霜ヒータ（４２）に通電される。こ
のとき、除霜ヒータ（４２）から発生した熱は、蒸発器
（４１）のプレートフィン（４１ａ ）及び冷却管（４
１ｂ ）に伝導し、除霜が行われる。一方、除霜ヒータ
（４２）は空気中に露出しているため、当然のことなが
ら、熱量の一部は冷蔵庫内の空気中に伝導される。この
結果、除霜時間か長時間要し、庫内温度が上昇し、収納
物の温度か上昇するという問題があった。(Problem to be solved by the invention) In such a structure, if cooling operation continues, frost will form on the evaporator (41), and when the defrosting timer (not shown) operates, the defrosting will start. The heater (42) is energized. At this time, the heat generated from the defrosting heater (42) is transferred to the plate fins (41a) of the evaporator (41) and the cooling pipe (4).
1b), and defrosting is performed. On the other hand, since the defrosting heater (42) is exposed to the air, a portion of its heat is naturally conducted into the air inside the refrigerator. As a result, the defrosting time takes a long time, and the temperature inside the refrigerator increases, causing the temperature of the stored items to rise as well.
この発明は上記のような問題点を解消するためになされ
たもので、除霜中でも庫内温度を上昇させないような冷
凍装置を得ることを目的とする。This invention was made to solve the above-mentioned problems, and an object of the invention is to obtain a refrigeration system that does not increase the temperature inside the refrigerator even during defrosting.
この発明に係る冷凍装置は圧縮機、凝縮器、減圧装置、
複数の蒸発器か単一の冷凍サイクル中に配設され、上記
蒸発器に対応する送風機および除霜用の加熱器を内蔵す
るものにおいて、上記各蒸発器への冷媒供給量を制御す
る電磁弁を設け、上記複数の蒸発器のうち除霜を実施す
る蒸発器に対応する電磁弁を閉路する一方、加熱器を作
動させ、上記電磁弁へめ閉路信号に基づき上記除霜する
蒸発器の送風機の運転を停止し、かつ冷却運転中の蒸発
器の送風機の回転数を上昇させるようにしたものである
。The refrigeration system according to the present invention includes a compressor, a condenser, a pressure reducing device,
A solenoid valve that controls the amount of refrigerant supplied to each of the evaporators in a device that is arranged in a plurality of evaporators or in a single refrigeration cycle and has a built-in blower and defrosting heater corresponding to the evaporators. is provided, and closes the solenoid valve corresponding to the evaporator to be defrosted among the plurality of evaporators, while operating the heater, and in response to the closing signal to the solenoid valve, the blower of the evaporator to be defrosted is closed. The operation of the evaporator is stopped, and the rotational speed of the evaporator fan during cooling operation is increased.
この発明における蒸発器の除霜は複数個の蒸発器の除霜
を交互に実施するとともに、一方の蒸発器か除霜中の場
合、除霜中の蒸発器の送風機を停止するとともに、他方
の蒸発器の送風機の回転数を上昇させるので、一方の蒸
発器が除霜中でも、他方の蒸発器で送風機の回転数を上
昇させ風量を上げ冷却するので庫内温度の上昇を防止で
きる。Defrosting of the evaporators in this invention is performed by alternately defrosting a plurality of evaporators, and when one evaporator is being defrosted, the blower of the evaporator being defrosted is stopped, and the blower of the other evaporator is stopped. Since the rotational speed of the blower of the evaporator is increased, even when one evaporator is defrosting, the rotational speed of the blower in the other evaporator is increased to increase the air volume and cool the refrigerator, thereby preventing a rise in temperature inside the refrigerator.
以下、この発明の一実施例を図について説明する。（１
）は冷媒カスを高温、高圧に圧縮する圧縮機、（２）は
この圧縮機（１）から吐出された冷媒ガスを凝縮、液化
する凝縮器、（１８）（１９）はこの凝縮器（２）で液
化された液体冷媒を減圧、膨張させて低温冷媒にする減
圧装置、（１４）および（１５）は（ｌａ） 、 （
１９）で低温となった液体冷媒を蒸発させる蒸発器、（
１６）。An embodiment of the present invention will be described below with reference to the drawings. (1
) is a compressor that compresses refrigerant scum to high temperature and high pressure, (2) is a condenser that condenses and liquefies the refrigerant gas discharged from this compressor (1), and (18) and (19) are this condenser (2). ) is a pressure reducing device that depressurizes and expands the liquid refrigerant liquefied in (14) and (15) to (la), (
an evaporator that evaporates the liquid refrigerant that has become low temperature in (19);
16).
（１７）は送風機、（６）場よび（７）はこれら両蒸発
器（１４） 、 （１５）に対応する除霜用の加熱器
、（８）および（９）は上記蒸発器（１４）。(17) is a blower, (6) and (7) are defrosting heaters corresponding to both of these evaporators (14) and (15), and (8) and (9) are the evaporators (14). .
（１５）から滴下する除霜水を受けるドレンパン、（１
２）および（１３）は上記蒸発器（１４） 、 （１
５）等を収納する筐体、（２０）および（２Ｉ）は電磁
弁、（２３）は上記電磁弁（２０） 、 （２１）の
信号を受けて、上記送風機（１６） 、 （１７）の
回転数を制御する送風機制御装置である。(15) A drain pan that receives the defrosting water dripping from (15);
2) and (13) are the evaporators (14), (1
5), etc., (20) and (2I) are solenoid valves, and (23) receives signals from the solenoid valves (20) and (21), and operates the blowers (16) and (17). This is a blower control device that controls the rotation speed.
このように構成された冷凍装置においては、冷却運転時
には両電磁弁（２０） 、 （２１）を開放して、両
蒸発器（１４） 、 （１５）によって負荷を冷却す
る。一方除霜運転時には、両電磁弁（２０） 。In the refrigeration system configured in this manner, both electromagnetic valves (20) and (21) are opened during cooling operation, and the load is cooled by both evaporators (14) and (15). On the other hand, during defrosting operation, both solenoid valves (20).
（２１）のうち、例えば電磁弁（２０）のみを開放して
、片方の蒸発器（１４）によって負荷を冷却する。この
時電磁弁（２１）の閉信号を受は取り、送風機制御装置
（２３）により、蒸発器（１４）の送風機（１６）の風
量を上げる。この時、加熱器（７）を通電することによ
り他方の蒸発器（１５）に発生した霜を除去する。この
動作を両蒸発器で交互に実施する。このようにすれば、
片方の蒸発器（風量アップにより冷却能力が増加）で負
荷が冷却されるので、片方の蒸発器が除霜中でも、庫内
温度が押えられる。Among (21), for example, only the solenoid valve (20) is opened and the load is cooled by one of the evaporators (14). At this time, the closing signal of the solenoid valve (21) is received, and the blower control device (23) increases the air volume of the blower (16) of the evaporator (14). At this time, frost generated in the other evaporator (15) is removed by energizing the heater (7). This operation is performed alternately on both evaporators. If you do this,
Since the load is cooled by one evaporator (cooling capacity increases due to increased air volume), the temperature inside the refrigerator can be kept low even when one evaporator is defrosting.
上記例では複数の蒸発器を個別の筐体を設けて構成した
が次のように同一の筐体で構成しても同様な効果が得ら
れる。第２図（ａ）、（ｂ）において、（３１） 、
（３２）は各々が互いに独立して運転する一対の蒸発
器で、単一の冷凍サイクル中に配設され、かつ筐体（３
３）内に収納されている。In the above example, the plurality of evaporators are configured by providing separate housings, but the same effect can be obtained even if the multiple evaporators are configured using the same housing as described below. In FIGS. 2(a) and (b), (31),
(32) is a pair of evaporators that operate independently of each other, and are arranged in a single refrigeration cycle, and are housed in a housing (32).
3) It is stored inside.
（３４）は金属製の仕切板で、上記筐体（３３）内の上
記両蒸発器（３１） 、 （３２）間に設けられてい
る。この仕切板（３４）によって画成された２つの送風
路（３５） 、 （３６）が上記筺体（３３）内に形
成されている。そしてこれら両送風路（３５）（３６）
には、上記送風機（１６） 、 （１７）が各々設け
られている。このように構成すると装置全体を小型化す
ることができる。(34) is a metal partition plate, which is provided between the evaporators (31) and (32) in the housing (33). Two ventilation paths (35) and (36) defined by the partition plate (34) are formed within the housing (33). And these two air ducts (35) (36)
are respectively provided with the blowers (16) and (17). With this configuration, the entire device can be downsized.
さらに本発明における蒸発器の個数は上述した実施例に
限定されず、例えば三個でもよく、その個数は適宜変更
することが自由である。Further, the number of evaporators in the present invention is not limited to the above-mentioned embodiment, and may be three, for example, and the number can be changed as appropriate.
以上のようにこの発明によれば圧縮機、凝縮器、減圧装
置、複数の蒸発器が単一の冷凍サイクル中に配設され、
上記蒸発器に対応する送風機および除霜用の加熱器を内
蔵するものにおいて、上記各蒸発器への冷媒供給量を制
御する電磁弁を設け、上記複数の蒸発器のうち除霜を実
施する蒸発器に対応する電磁弁を閉路する一方、加熱器
を作動させ、上記電磁弁への閉路信号に基づき上記除霜
する蒸発器の送風機の運転を停止し、かつ冷却運転中の
蒸発器の送風機の回転数を上昇させる送風機制御装置を
設けたので、片方の蒸発器が除霜中でも、他方の蒸発器
で送風機の回転数を上昇させ風量を上げ冷却するので庫
内温度の上昇を防止できる。 −As described above, according to the present invention, a compressor, a condenser, a pressure reducing device, and a plurality of evaporators are arranged in a single refrigeration cycle,
In an evaporator equipped with a built-in blower and a defrosting heater corresponding to the evaporator, a solenoid valve is provided to control the amount of refrigerant supplied to each of the evaporators, and the evaporator that defrosts the evaporator of the plurality of evaporators. While closing the solenoid valve corresponding to the evaporator, the heater is operated, and based on the closing signal to the solenoid valve, the operation of the blower of the evaporator to be defrosted is stopped, and the blower of the evaporator during cooling operation is stopped. Since a blower control device that increases the rotation speed is provided, even when one evaporator is defrosting, the other evaporator increases the rotation speed of the blower to increase the air volume and cool the refrigerator, thereby preventing a rise in temperature inside the refrigerator. −
第１図はこの発明の一実施例を示す冷凍装置の構成図、
第２図（ａ）、（ｂ）はこの発明の他の実施例を示す冷
凍装置の構成図、第３図、第４図は従来の冷凍装置の構
成図である。これらの図において（１）は圧縮機、（２
）は凝縮器、（１８）（１９）は減圧装置、（１４）
（１５） Ｈｌ） （３２）は蒸発器、（１６）
（１７）は送風機、（６）（７）は加熱器、（２０
） （２１）は電磁弁、（２３）は送風機制御装置で
ある。
なお、各図中、同
を示す。FIG. 1 is a configuration diagram of a refrigeration system showing an embodiment of the present invention;
FIGS. 2(a) and 2(b) are block diagrams of a refrigeration system showing another embodiment of the present invention, and FIGS. 3 and 4 are block diagrams of a conventional refrigeration system. In these figures, (1) is the compressor, (2
) is a condenser, (18) (19) is a pressure reducing device, (14)
(15) Hl) (32) is the evaporator, (16)
(17) is a blower, (6) and (7) are heaters, (20
) (21) is a solenoid valve, and (23) is a blower control device. In addition, the same is shown in each figure.
Claims (1)
の冷凍サイクル中に配設され、上記蒸発器に対応する送
風機および除霜用の加熱器を内蔵するものにおいて、上
記各蒸発器への冷媒供給量を制御する電磁弁を設け、上
記複数の蒸発器のうち除霜を実施する蒸発器に対応する
電磁弁を閉路する一方、加熱器を作動させ、上記電磁弁
への閉路信号に基づき上記除霜する蒸発器の送風機の運
転を停止し、かつ冷却運転中の蒸発器の送風機の回転数
を上昇させる送風機制御装置を備えたことを特徴とする
冷凍装置。(1) A compressor, a condenser, a pressure reducing device, and a plurality of evaporators are arranged in a single refrigeration cycle, and each of the above-mentioned A solenoid valve is provided to control the amount of refrigerant supplied to the evaporator, and while the solenoid valve corresponding to the evaporator that performs defrosting among the plurality of evaporators is closed, the heater is operated and the solenoid valve is closed. A refrigeration system characterized by comprising a blower control device that stops the operation of the blower of the evaporator to be defrosted based on the closing signal and increases the rotational speed of the blower of the evaporator during cooling operation.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2206269A JPH0490478A (en) | 1990-08-01 | 1990-08-01 | Freezer device |
| KR91013336A KR960009346B1 (en) | 1990-08-01 | 1991-08-01 | Refrigerator system to control fan frequency of evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2206269A JPH0490478A (en) | 1990-08-01 | 1990-08-01 | Freezer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0490478A true JPH0490478A (en) | 1992-03-24 |
Family
ID=16520534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2206269A Pending JPH0490478A (en) | 1990-08-01 | 1990-08-01 | Freezer device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0490478A (en) |
| KR (1) | KR960009346B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009236446A (en) * | 2008-03-28 | 2009-10-15 | Sanyo Electric Co Ltd | Showcase |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990042933A (en) * | 1997-11-28 | 1999-06-15 | 장문배 | Fabric inspection device |
-
1990
- 1990-08-01 JP JP2206269A patent/JPH0490478A/en active Pending
-
1991
- 1991-08-01 KR KR91013336A patent/KR960009346B1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009236446A (en) * | 2008-03-28 | 2009-10-15 | Sanyo Electric Co Ltd | Showcase |
Also Published As
| Publication number | Publication date |
|---|---|
| KR920004801A (en) | 1992-03-28 |
| KR960009346B1 (en) | 1996-07-18 |
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