JP2011089718A - Refrigerator-freezer - Google Patents

Refrigerator-freezer Download PDF

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JP2011089718A
JP2011089718A JP2009244155A JP2009244155A JP2011089718A JP 2011089718 A JP2011089718 A JP 2011089718A JP 2009244155 A JP2009244155 A JP 2009244155A JP 2009244155 A JP2009244155 A JP 2009244155A JP 2011089718 A JP2011089718 A JP 2011089718A
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cooler
freezer
refrigerator
chamber
heater
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JP5317924B2 (en
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Hiroshi Miyazaki
浩史 宮崎
Hiroshi Eto
浩 衛藤
Takamasa Nishioka
孝真 西岡
Takashi Kobayashi
小林　　孝
Junji Yoshida
淳二 吉田
Mutsumi Kato
睦 加藤
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/063—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation with air guides

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  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To enable large part of cold air returned to a cooler chamber to pass from the upstream side of a cooler through the inner side, regardless of presence of a bypass space. <P>SOLUTION: The cooler chamber 20 defined by a fan grille 3 and forming a circulation passage of air between the cooler chamber 20 and a freezing chamber 100 is provided on the back face side of the freezing chamber 100 within an inner casing 22. Within the cooler chamber 20, a fan 9, the cooler 1, a heater roof 5 and a heater 4 are arranged from the upper side, and a bottom face part is formed as a water receiving part 7 during defrosting by the heater 4. The back face side bypass space 8 for preventing closing of an air course during frost formation is provided between the inner casing 22 and the cooler 1. A gutter 6 for moving return air toward the back face side along the bottom face part is provided at a cooler chamber inlet in the circulation passage. A guide 10A guiding the cold air made to enter along the bottom face part to the cooler front face side is provided in the inner casing 22 on the back face side. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、ファンにより冷却器に空気を循環させて庫内温度を低下・維持させる冷凍冷蔵庫に関する。   The present invention relates to a refrigerator-freezer in which air is circulated through a cooler by a fan to lower and maintain the internal temperature.

従来より、庫内背面側に冷却器室を設け、冷却器室内には、上方にファン、その下方に冷却器、さらにその下方にヒータールーフを介して除霜ヒータを配置するとともに、冷却器の背面側、又は冷却器の背面側と前面側に、バイパス空間を設け、冷却器下部が着霜により目詰まりしても、戻り冷気をバイパス空間を通して冷却器上部を通過させることで冷却できるようにして、着霜による冷却能力の劣化を防止できるようにしたものが知られている（例えば、特許文献１参照）。   Conventionally, a cooler chamber is provided on the back side of the inside of the refrigerator, and in the cooler chamber, a fan is disposed above, a cooler is disposed below, and a defrost heater is disposed below the heater roof. Bypass space is provided on the back side or on the back side and front side of the cooler so that even if the lower part of the cooler is clogged due to frost formation, the return cold air can be cooled by passing through the upper part of the cooler through the bypass space. There is known one that can prevent deterioration of the cooling capacity due to frost formation (see, for example, Patent Document 1).

特開平１０−３８４４９号公報（図１、図４〜６）Japanese Patent Laid-Open No. 10-38449 (FIGS. 1 and 4 to 6)

しかしながら、前述のように冷却器への着霜のみを考慮してバイパス空間を設けたものにあっては、目詰まりしていない通常状態下の冷却器室に戻った冷気の冷却器へ至るまでの挙動については、考慮されていない。このため、戻り冷気は、着霜していない場合にも、流れ易いバイパス空間に直接向かって流れ、バイパス空間を通過し、主に冷却器の下流側と熱交換し、冷却器の上流側は活用されず十分に冷却されないまま冷却器室から庫内に放出されるといった難点があった。   However, in the case where the bypass space is provided in consideration of only the frost formation on the cooler as described above, it reaches the cooler of the cool air that has returned to the cooler chamber under the normal state where it is not clogged. The behavior of is not considered. For this reason, even when the refrigeration is not frosted, the return cold air flows directly to the bypass space where it easily flows, passes through the bypass space, and mainly exchanges heat with the downstream side of the cooler. There was a problem that it was not used and was not sufficiently cooled and discharged from the cooler room into the cabinet.

本発明の技術的課題は、バイパス空間の存在にもかかわらず、冷却器室に戻った冷気の多くを冷却器の上流側からその内部を通過させることができるようにすることにある。   The technical problem of the present invention is to allow most of the cool air that has returned to the cooler chamber to pass through the inside of the cooler from the upstream side, regardless of the presence of the bypass space.

本発明に係る冷凍冷蔵庫は、下記の構成からなるものである。すなわち、内箱内の冷凍室の背面側にファングリルにより画成されて冷凍室との間で空気の循環路を形成する冷却器室を設け、冷却器室内には、上方より、ファン、冷却器、ヒータールーフ、及びヒーターを配置するとともに、底面部をヒーターによる除霜時の水受け部として形成し、かつ内箱と冷却器の間には、着霜時の風路閉塞を防止するための背面側バイパス空間を設けた冷凍冷蔵庫において、循環路における冷却器室入口部に、戻り冷気を底面部に這わせて背面側に向かわせるトイを設けるとともに、背面側の内箱に、底面部を這って進入してきた戻り冷気を冷却器前面側に導くガイドを設けたものである。   The refrigerator-freezer according to the present invention has the following configuration. In other words, a cooler chamber is provided on the back side of the freezer compartment in the inner box and is defined by a fan grill to form an air circulation path with the freezer compartment. In order to prevent the air path from being blocked during frost formation between the inner box and the cooler between the inner box and the cooler. In the refrigerator-freezer provided with the back side bypass space, a toy that circulates the return cold air to the bottom surface part toward the back surface side is provided at the inlet of the cooler chamber in the circulation path, and the bottom part is provided on the inner box on the back side. A guide is provided for guiding the return cold air that has entered through to the front side of the cooler.

本発明の冷凍冷蔵庫によれば、循環路における冷却器室入口部に、戻り冷気を底面部に這わせて背面側に向かわせるトイを設けるとともに、背面側の内箱に、底面部を這って進入してきた戻り冷気を冷却器前面側に導くガイドを設けたので、内箱側に回った気流を冷却器前面部に向かわせて、冷気の多くを冷却器の上流側からその内部を通過させることができる。このため、冷却器を有効に活用することができて、冷却効率を向上させることができる。   According to the refrigerator-freezer of the present invention, a toy is provided at the inlet of the cooler chamber in the circulation path so that the return cold air is directed toward the back side and directed toward the back side, and the bottom side is put on the inner box on the back side. A guide is provided to guide the return cold air that has entered the cooler front side, so that the airflow that has turned to the inner box side is directed to the cooler front, and most of the cool air passes through the interior from the upstream side of the cooler. be able to. For this reason, a cooler can be used effectively and cooling efficiency can be improved.

本発明の実施の形態１に係る冷凍冷蔵庫の冷却器周りの構成を示す側面断面図である。It is side surface sectional drawing which shows the structure around the cooler of the refrigerator-freezer which concerns on Embodiment 1 of this invention. 図１の要部である冷却器室を庫内循環用ファンを取り外した状態で示す拡大断面図である。It is an expanded sectional view which shows the cooler room which is the principal part of FIG. 1 in the state which removed the fan for internal circulation. 本発明の実施の形態１に係る冷凍冷蔵庫の冷却器室の変形例を庫内循環用ファンを取り外した状態で示す拡大断面図である。It is an expanded sectional view showing the modification of the cooler room of the refrigerator-freezer concerning Embodiment 1 of the present invention in the state where the fan for circulation in a warehouse was removed. 本発明の実施の形態２に係る冷凍冷蔵庫の要部である冷却器室を庫内循環用ファンを取り外した状態で示す拡大断面図である。It is an expanded sectional view which shows the cooler room which is the principal part of the refrigerator-freezer which concerns on Embodiment 2 of this invention in the state which removed the fan for internal circulation.

実施の形態１．
以下、図示実施形態により本発明を説明する。
図１は本発明の実施の形態１に係る冷凍冷蔵庫の冷却器周りの構成を示す側面断面図、図２は図１の要部である冷却器室を庫内循環用ファンを取り外した状態で示す拡大断面図、図３は図１の要部である冷却器室の変形例を庫内循環用ファンを取り外した状態で示す拡大断面図である。 Embodiment 1 FIG.
The present invention will be described below with reference to illustrated embodiments.
FIG. 1 is a side sectional view showing a configuration around a cooler of a refrigerator-freezer according to Embodiment 1 of the present invention, and FIG. 2 is a state in which a cooler chamber which is a main part of FIG. FIG. 3 is an enlarged sectional view showing a modified example of the cooler chamber, which is the main part of FIG. 1, with the internal circulation fan removed.

本実施の形態の冷凍冷蔵庫は、図１及び図２のように外箱２１と内箱２２の間に断熱材２３が充填されて、前面が開口する本体外郭が形成されている。本体内は仕切り１０２によって上下の室に画成され、上の室が冷凍室１００、下の室が野菜室１０１となっており、各室の前面開口が、冷凍室扉１０５と野菜室扉１０６により、それぞれ開閉自在に閉塞されている。そして、冷凍室１００内には冷凍室ケース１０３が、また野菜室１０１内には野菜室ケース１０４が収容されている。   In the refrigerator-freezer of this embodiment, as shown in FIGS. 1 and 2, a heat insulating material 23 is filled between the outer box 21 and the inner box 22, and a main body outer shell having an open front surface is formed. The body is divided into upper and lower chambers by a partition 102, the upper chamber is a freezer chamber 100, the lower chamber is a vegetable chamber 101, and the front opening of each chamber is a freezer chamber door 105 and a vegetable chamber door 106. Thus, each is closed so as to be freely opened and closed. A freezer compartment 103 is accommodated in the freezer compartment 100, and a vegetable compartment case 104 is accommodated in the vegetable compartment 101.

冷凍室１００の背面側には、ファングリル３により画成されて冷凍室１００との間で空気（冷気）の循環路を形成する冷却器室２０が設けられている。冷却器室２０内には、上方に庫内循環用のファン９、その下方に冷却器１、さらにその下方に背面側に向けて下方に傾斜するヒータールーフ５を介して霜取りヒーター４が配置されているとともに、冷却器室２０の底面部が霜取りヒーター４による除霜時の水受け部７として構成されている。また、内箱２２と冷却器１の間には、着霜時の風路閉塞を防止するための背面側バイパス空間８が設けられており、背面側バイパス空間８の上端部は閉塞されている。   On the back side of the freezer compartment 100, there is provided a cooler compartment 20 that is defined by the fan grill 3 and forms an air (cold air) circulation path with the freezer compartment 100. In the cooler chamber 20, a fan 9 for circulating inside the cabinet is disposed above, the cooler 1 is disposed below the fan 9, and a defrost heater 4 is disposed below the heater roof 5 that is inclined downward toward the back side. In addition, the bottom surface portion of the cooler chamber 20 is configured as a water receiving portion 7 at the time of defrosting by the defrost heater 4. Further, a back side bypass space 8 is provided between the inner box 22 and the cooler 1 to prevent air passage blockage during frost formation, and the upper end of the back side bypass space 8 is closed. .

冷却器室２０の下部前面側には、循環路における冷却器室入口が形成され、この冷却器室入口部に、戻り冷気を底面部すなわち水受け部７に這わせて背面側に向かわせるトイ６が設けられている。また背面側の内箱２２には、水受け部７を這って進入してきた戻り冷気を冷却器前面側に導く別体構成のガイド１０Ａが設けられている。   A cooler chamber inlet in the circulation path is formed on the lower front side of the cooler chamber 20, and a toy for returning the return cold air to the bottom surface portion, that is, the water receiving portion 7, is directed to the cooler chamber inlet portion. 6 is provided. The inner box 22 on the back side is provided with a separate guide 10 </ b> A that guides the return cold air that has entered through the water receiver 7 to the front side of the cooler.

以上のように構成される本実施の形態の冷凍冷蔵庫において、冷却器１により冷却された冷却器室２０内の冷気はファン９により送風され、ファングリル３内を通り冷凍室１００に送られ、冷凍室ケース１０３内の食品を冷却し、冷凍室１００内を冷却した冷気は、戻り冷気として冷却器室２０内に戻る。また、戻り冷気は、冷凍室ケース１０３の湿気や食品の出し入れにより冷凍室１００内に入り込む湿気も運び入れる。湿気は冷却器１に霜として付着する。冷却器１への霜の付着による能力低下を防ぐため、図示しない圧縮機の運転時間や一定時間ごとに霜取りヒーター４の発熱により霜を水滴にして冷却器１より滴下させる。水滴はヒータールーフ５の斜面上に滴下し、ヒータールーフ５の斜面上を背面側下方に伝い流れて、水受け部７に滴下し、排出される。   In the refrigerator-freezer of the present embodiment configured as described above, the cool air in the cooler chamber 20 cooled by the cooler 1 is blown by the fan 9 and sent to the freezer compartment 100 through the fan grill 3. The cold air that has cooled the food in the freezer compartment 103 and has cooled the freezer compartment 100 returns to the cooler chamber 20 as return cold air. In addition, the return cold air also brings in moisture in the freezer compartment 103 and moisture that enters the freezer compartment 100 when food is taken in and out. Moisture adheres to the cooler 1 as frost. In order to prevent a decrease in capacity due to frost adhering to the cooler 1, the frost is dropped from the cooler 1 as water droplets by heat generated by the defrosting heater 4 at every operating time of the compressor (not shown) or every predetermined time. The water drops are dropped on the slope of the heater roof 5, flow on the slope of the heater roof 5 downward on the back side, drop onto the water receiving portion 7 and are discharged.

また、庫内循環後に冷却器室２０に戻る冷気は、冷却器室入口部のトイ６によって直下の水受け部７に向かい、水受け部７に到達した冷気は、水受け部７上を這うように背面側に向かう。背面側の内箱２２に到達した冷気は、内箱２２により向きを上向きに変えられ、内箱２２表面を這うように上昇し、ガイド１０Ａ部に至り、ガイド１０Ａによって冷却器前面側に導かれる。これにより、冷気の多くを冷却器１の上流側からその内部を通過させることができ、従来、背面側バイパス空間８に集中していた戻り冷気の流れを分散することができる。このため、冷却器１内部を流れる気流の分布を改善することが可能となり、冷却器を有効に活用することができて、冷却効率を向上させることができる。   Further, the cool air returning to the cooler chamber 20 after circulation in the cabinet is directed to the water receiving portion 7 immediately below by the toy 6 at the cooler chamber entrance, and the cool air reaching the water receiving portion 7 crawls on the water receiving portion 7. So head to the back side. The cool air that has reached the inner box 22 on the back side is turned upward by the inner box 22, rises so as to crawl the surface of the inner box 22, reaches the guide 10 </ b> A portion, and is guided to the front side of the cooler by the guide 10 </ b> A. . Thereby, most of the cool air can pass through the inside of the cooler 1 from the upstream side, and the flow of the return cool air that has been concentrated in the back side bypass space 8 can be dispersed. For this reason, it becomes possible to improve the distribution of the airflow flowing through the cooler 1, the cooler can be used effectively, and the cooling efficiency can be improved.

また、ヒータールーフ５を、背面側に向けて下方に傾斜させて設置しているので、ガイド１０Ａによって戻り冷気を冷却器前面側に導く際の障害とならず、スムーズに戻り冷気を冷却器前面側に案内することができる。   Further, since the heater roof 5 is installed to be inclined downward toward the back side, the guide 10A does not become an obstacle when the return cold air is guided to the cooler front side, and the return cool air is smoothly returned to the front of the cooler. Can be guided to the side.

なお、ここではガイド１０Ａを背面側の内箱２２とは別体構成としたものを例に挙げて説明したが、これを図３のように背面側の内箱２２と一体構成としたガイド１０Ｂとしてもよいことは言うまでもない。   Here, the guide 10A is described as an example in which the guide 10A is configured separately from the inner box 22 on the back side. However, the guide 10B is configured integrally with the inner box 22 on the back side as shown in FIG. It goes without saying.

実施の形態２．
図４は本発明の実施の形態２に係る冷凍冷蔵庫の要部である冷却器室を庫内循環用ファンを取り外した状態で示す拡大断面図であり、図中、前述の実施の形態１と同一部分には、同一符号を付してある。なお、説明に当っては前述の図１を参照するものとする。 Embodiment 2. FIG.
FIG. 4 is an enlarged cross-sectional view showing the cooler chamber, which is the main part of the refrigerator-freezer according to Embodiment 2 of the present invention, with the internal circulation fan removed, and in the figure, The same parts are denoted by the same reference numerals. In the description, reference is made to FIG.

本実施の形態の冷凍冷蔵庫は、図４のようにファングリル３と冷却器１の間に、背面側バイパス空間８より風路断面積の大きい前面側バイパス空間１１を設け、前面側バイパス空間１１の上端部は閉塞した点が前述の冷却器室の変形例（図３）のものと異なっている。それ以外の構成は前述の実施の形態１と同様である。   As shown in FIG. 4, the refrigerator-freezer according to the present embodiment is provided with a front bypass space 11 having a larger air passage cross-sectional area than the rear bypass space 8 between the fan grill 3 and the cooler 1. Is different from that of the above-described modification of the cooler chamber (FIG. 3). Other configurations are the same as those of the first embodiment.

本実施の形態の冷凍冷蔵庫においては、前面側バイパス空間１１を背面側バイパス空間８よりも広くしているため、気流（戻り冷気）は抵抗の小さい前面側バイパス空間１１を流れ易くなる。これにより、気流（戻り冷気）を冷却器１の前面側に更に向かわせることが可能となって、より多くの冷気を冷却器１の上流側からその内部を通過させることができ、戻り冷気の流れを分散することができる。このため、冷却器１内部を流れる気流の分布を更に改善することが可能となり、冷却器を有効に活用することができて、冷却効率を一層向上させることができる。   In the refrigerator-freezer of the present embodiment, the front side bypass space 11 is made wider than the rear side bypass space 8, and therefore airflow (returned cold air) easily flows through the front side bypass space 11 having a low resistance. As a result, the airflow (return cold air) can be further directed toward the front side of the cooler 1, and more cold air can be passed through the interior of the cooler 1 from the upstream side. The flow can be dispersed. For this reason, it becomes possible to further improve the distribution of the airflow flowing through the inside of the cooler 1, the cooler can be used effectively, and the cooling efficiency can be further improved.

１ 冷却器、３ ファングリル、４ ヒーター、５ ヒータールーフ、６ トイ、７ 水受け部、８ 背面側バイパス空間、９ ファン、１０Ａ，１０Ｂ ガイド、１１ 前面側バイパス空間、２０ 冷却器室、２２ 内箱、１００ 冷凍室。   1 Cooler, 3 Fan Grill, 4 Heater, 5 Heater Roof, 6 Toy, 7 Water Receiving Portion, 8 Back Side Bypass Space, 9 Fan, 10A, 10B Guide, 11 Front Side Bypass Space, 20 Inside Cooler Room, 22 Box, 100 freezer compartment.

Claims (5)

内箱内の冷凍室の背面側にファングリルにより画成されて前記冷凍室との間で空気の循環路を形成する冷却器室を設け、該冷却器室内には、上方より、ファン、冷却器、ヒータールーフ、及びヒーターを配置するとともに、底面部を前記ヒーターによる除霜時の水受け部として形成し、かつ前記内箱と前記冷却器の間には、着霜時の風路閉塞を防止するための背面側バイパス空間を設けた冷凍冷蔵庫において、
前記循環路における冷却器室入口部に、戻り冷気を前記底面部に這わせて背面側に向かわせるトイを設けるとともに、
背面側の前記内箱に、前記底面部を這って進入してきた戻り冷気を冷却器前面側に導くガイドを設けたことを特徴とする冷凍冷蔵庫。 A cooler chamber that is defined by a fan grill to form an air circulation path with the freezer compartment is provided on the rear side of the freezer compartment in the inner box. A heater, a roof, and a heater, and a bottom portion is formed as a water receiving portion at the time of defrosting by the heater, and an air passage blockage at the time of frost formation is formed between the inner box and the cooler. In the refrigerator-freezer provided with the back side bypass space to prevent,
At the cooler chamber inlet in the circulation path, a toy is provided that directs the return cold air to the bottom surface toward the back side,
A refrigerator-freezer, characterized in that a guide is provided in the inner box on the back side to guide the return cold air that has entered the bottom surface portion toward the front side of the cooler. 前記ヒータールーフを、背面側に向けて下方に傾斜させたことを特徴とする請求項１記載の冷凍冷蔵庫。   The refrigerator-freezer according to claim 1, wherein the heater roof is inclined downward toward the back side. 前記ガイドを、前記内箱とは別体から構成したことを特徴とする請求項１又は請求項２記載の冷凍冷蔵庫。   3. The refrigerator-freezer according to claim 1, wherein the guide is configured separately from the inner box. 前記ガイドを、前記内箱と一体に設けたことを特徴とする請求項１又は請求項２記載の冷凍冷蔵庫。   The refrigerator-freezer according to claim 1 or 2, wherein the guide is provided integrally with the inner box. 前記ファングリルと前記冷却器の間に、前記背面側バイパス空間より風路断面積の大きい前面側バイパス空間を設けたことを特徴とする請求項１乃至請求項４のいずれかに記載の冷凍冷蔵庫。   5. The refrigerator-freezer according to claim 1, wherein a front-side bypass space having a larger air passage cross-sectional area than the rear-side bypass space is provided between the fan grill and the cooler. .
JP2009244155A 2009-10-23 2009-10-23 Freezer refrigerator Expired - Fee Related JP5317924B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013084460A1 (en) 2011-12-06 2013-06-13 パナソニック株式会社 Refrigerator
JP2016031188A (en) * 2014-07-29 2016-03-07 日立アプライアンス株式会社 refrigerator
WO2018025353A1 (en) * 2016-08-03 2018-02-08 三菱電機株式会社 Refrigerator
WO2020125446A1 (en) * 2018-12-20 2020-06-25 青岛海尔电冰箱有限公司 Defrosting apparatus

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JPH0285982U (en) * 1988-12-20 1990-07-06
JPH03118487U (en) * 1990-03-19 1991-12-06
JPH05256553A (en) * 1992-03-11 1993-10-05 Matsushita Refrig Co Ltd Freezer/refrigerator
JPH1038449A (en) * 1996-07-26 1998-02-13 Matsushita Refrig Co Ltd Freezer/refrigerator

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JPH05256553A (en) * 1992-03-11 1993-10-05 Matsushita Refrig Co Ltd Freezer/refrigerator
JPH1038449A (en) * 1996-07-26 1998-02-13 Matsushita Refrig Co Ltd Freezer/refrigerator

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013084460A1 (en) 2011-12-06 2013-06-13 パナソニック株式会社 Refrigerator
JP2016031188A (en) * 2014-07-29 2016-03-07 日立アプライアンス株式会社 refrigerator
WO2018025353A1 (en) * 2016-08-03 2018-02-08 三菱電機株式会社 Refrigerator
JPWO2018025353A1 (en) * 2016-08-03 2019-02-28 三菱電機株式会社 refrigerator
WO2020125446A1 (en) * 2018-12-20 2020-06-25 青岛海尔电冰箱有限公司 Defrosting apparatus

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