JPH03221774A - Freezer - Google Patents

Abstract

PURPOSE:To prevent the variations in temperature of first and second freezing temperature zones by providing a top duct plate integrally formed with an inner box of a refrigerator and forming a cold diffuser duct between the top duct plate and an insulation duct plate arranged at the heat insulator side of inner box. CONSTITUTION:A top duct plate 23 has an upper surface on which a reinforce plate is stuck, the reinforce plate is covered with a heat insulation plate 25 laid under an inner box 2 at its heat insulator side. A cold diffuser duct 18 discharging the cold into a second freezing temperature zone is formed between the top duct plate 23 and a heat insulation duct 25. A cold intake 23a entrapping some of cold into the cold diffuser duct 18 is provided at the rear end portion of the top duct plate 23, and a cold outlet 23b that faces against a cold intake 19a discharging the cold into a second freezing temperature zone 21 is provided at the front end portion of the top duct plate 23. The freezer constituted in this manner can prevent the variations in temperature of the first and second freezing temperature zones, because the cold passes through the cold diffuser duct without any leak to the first freezing temperature zone, thereby making it possible to prevent the setting temperature of the first and second freezing temperature zones from fluctuating.

Description

【発明の詳細な説明】 ［産業上の利用分野］ この発明は冷凍室の正面にさらに別個の冷凍温度帯室を
形成させた冷凍冷蔵庫に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a refrigerator-freezer in which a separate freezing temperature range chamber is further formed in front of the freezing chamber.

［従来の技術］ 第５図は例えば先願（特願平１−１３８１０４号）の冷
凍冷蔵庫の要部を示す垂直断面図であり、図において（
１）は冷蔵庫本体、（２）はその内箱、（３）は冷凍室
である第１冷凍温度帯室、（４）は冷凍室の扉、（５）
は仕切Ｎ（６）でその直下に仕切られた冷蔵室、（７）
は冷却器室、（８）はその内部の冷却器、（９）はこれ
の上部に設けた冷気循環ファン、（１０）は上記第１冷
凍温度帯室（３）の後壁、（１１）はその背部に設けた
冷気案内板で、上部にマウスケース（１２）を有してい
る。（１３）は上記ファン（９）に対向するように上記
後壁（１０）の上部に設けた冷気吹出口、（１４）は第
１冷凍温度帯室（３）の底壁（１５）の先端部に設けた
冷気吸込口で、この底壁の直下に設けた循環冷気の底部
吸入ダクト（１６）に連通している。[Prior Art] FIG. 5 is a vertical cross-sectional view showing the main parts of a refrigerator-freezer disclosed in a previous application (Japanese Patent Application No. 1-138104).
1) is the refrigerator itself, (2) is its inner box, (3) is the first freezing temperature zone chamber, (4) is the door of the freezer compartment, (5)
is the refrigerator compartment directly below partition N (6), (7)
is the cooler room, (8) is the cooler inside, (9) is the cold air circulation fan installed above this, (10) is the rear wall of the first freezing temperature zone room (3), (11) is a cold air guide plate provided on the back thereof, and has a mouse case (12) on the upper part. (13) is a cold air outlet provided at the top of the rear wall (10) to face the fan (9), and (14) is the tip of the bottom wall (15) of the first freezing temperature zone chamber (3). A cold air suction port provided at the bottom communicates with a bottom suction duct (16) for circulating cold air provided directly below the bottom wall.

（１７）は第６図のように第１冷凍温度帯室（３）の頂
壁部（２ａ）に設けた切欠きを下方から封塞し、その上
部断熱板（２ｂ）との間に冷気吹出ダクト（１８）を形
成する頂部ダクト板で先端に冷気吹出口（１７ａ）を有
している。　（１９）はこの冷気吹出口（１７ａ）に対
設させた冷気の入口（１９ａ）を頂部に有し、第１冷凍
温度帯室（３）の正面を開閉自在に閉塞する箱形の開閉
差、（２０）はこの開閉蓋との間に第２冷凍温度帯室（
２１）を形成するように上記扉（４）に設けたその内箱
である。(17) seals the notch provided in the top wall (2a) of the first freezing temperature zone chamber (3) from below as shown in Fig. 6, and cools air between it and the upper heat insulating plate (2b). The top duct plate forming a blow-off duct (18) has a cold air blow-off port (17a) at its tip. (19) has a cold air inlet (19a) at the top opposite to this cold air outlet (17a), and has a box-shaped opening/closing differential that freely opens and closes the front of the first freezing temperature zone chamber (3). , (20) has a second freezing temperature zone chamber (
21) is the inner box provided on the door (4).

すなわちファン（９）によって吹出された冷気は冷気吹
出口（１３）を通って直接第１冷凍温度帯室（３）内に
送り込まれるとともに、その一部は冷気吹出ダクト（１
８）を経て冷気吹出口（１７ａ）、冷気の入口（１９ａ
）を通って第２冷凍温度帯室（２１）内に送り込まれ、
図示実線矢印で示すように循環されるようになっている
。That is, the cold air blown out by the fan (9) is directly sent into the first freezing temperature zone room (3) through the cold air outlet (13), and a part of it is sent through the cold air outlet duct (13).
8) to the cold air outlet (17a) and the cold air inlet (19a).
) into the second freezing temperature zone chamber (21),
It is designed to be circulated as shown by the solid line arrows in the figure.

［発明が解決しようとする課題］ 従来の冷凍冷蔵庫における第２冷凍温度帯室（２１）内
への冷気吹出ダクト（１８）は第６図のように構成され
ているので、頂部ダクト板（１７）と内箱（２）の頂壁
部（２ａ）との重合個所に隙間（２２）ができ易しく、
この隙間より冷気ダクト（１８）を通る冷気が第１冷凍
温度帯室（３）内に漏れて、第２冷凍温度帯室（２１）
および第１冷凍温度帯室（３）の温度に「ばらつき」を
生じてしまうことや、外観的にもその継目の存在におい
て問題点があった。[Problems to be Solved by the Invention] Since the cold air blowing duct (18) into the second freezing temperature zone chamber (21) in the conventional refrigerator-freezer is configured as shown in FIG. ) and the top wall (2a) of the inner box (2) tend to form a gap (22) at the overlapped location,
The cold air passing through the cold air duct (18) leaks into the first freezing temperature zone chamber (3) from this gap and flows into the second freezing temperature zone chamber (21).
Also, there were problems in that the temperature of the first freezing temperature zone chamber (3) would vary, and in terms of appearance, there were seams.

この発明は上記の問題点を解消するためになされたもの
で、上記の頂部ダクト板に相当するものを内箱の頂壁と
一体成形して、特にその上部の断熱材側に第２冷凍温度
帯室内への冷気吹出ダクトを形成させることを目的とす
る。This invention was made in order to solve the above-mentioned problems, and a thing corresponding to the above-mentioned top duct plate is integrally molded with the top wall of the inner box. The purpose is to form a cold air blowing duct into the band room.

［課題を解決するための手段］ この発明の場合は、第２冷凍温度帯室（２１）に連通さ
せた冷気吹出ダクト（１８）の−半を形成する頂部ダク
ト板（２３）を冷蔵庫本体（１）の内箱（２）と一体成
形させて、これと上記内箱の断熱材側に設けた核部の断
熱ダクト板（２５）との間に上記の冷気吹出ダクト（１
８）を形成させている。[Means for Solving the Problems] In the case of the present invention, the top duct plate (23) forming the -half of the cold air blowing duct (18) connected to the second freezing temperature zone chamber (21) is connected to the refrigerator body ( The cold air blowing duct (1) is integrally molded with the inner box (2) of (1), and is interposed between this and the core heat insulating duct plate (25) provided on the heat insulating material side of the inner box.
8) is formed.

［作　用］ この発明の冷気吹出ダクトの一半を構成する頂部ダクＩ
・板は、冷蔵庫本体の内箱と一体成形させているので、
従来のもののように重合による隙間がなく当該冷気吹出
ダクトからの冷気漏れがなくなり、さらには継目による
外観上の問題もない。[Function] Top duct I constituting one half of the cold air blowing duct of this invention
・The board is integrally molded with the inner box of the refrigerator, so
Unlike conventional products, there are no gaps due to polymerization, so there is no leakage of cold air from the cold air blowing duct, and there are no problems with appearance due to joints.

［実施例コ 以下この発明の一実施例について説明する。すなわち第
１図において従来のものと同一または相当個所は同一符
号を付してその重複説明は省略することにするが、図に
おいて（２３）は冷蔵庫本体（１）の内箱（２）と一体
成形により、第１冷凍温度帯室（３）内に樋状に突出さ
れた、この発明の第１冷凍温度帯室（３）における頂部
ダクト板で、その上面に第２図のように樋状の補強板（
２４）が貼着され、この補強板上には内箱（２〉の断熱
材側に埋設した断熱ダクト板（２５）をかぶせて、その
間に第２冷凍温度帯室（２１）内への冷気吹出ダクト（
１８）を形成させており、そして上記の頂部ダグ１−板
（２３）の後端部には、吐出冷気の一部を冷気吹出ダク
ト（１８）内に取入れる冷気の入口（２３ａ）を、また
先端部には第２冷凍温度帯室（２１）内への冷気の入口
（１９ａ）に対設させた冷気の出口（２３ｂ）が開設さ
れている点においてこの発明の特徴があり、その他の構
成は第５図の従来のものと同様になっている。[Example 1] An example of the present invention will be described below. In other words, in Fig. 1, parts that are the same as or equivalent to those of the conventional one will be given the same reference numerals, and redundant explanation will be omitted. A top duct plate of the first freezing temperature zone chamber (3) of the present invention which is formed into a gutter-like shape and protrudes into the first freezing temperature zone chamber (3) by molding, and has a gutter-like shape on its upper surface as shown in FIG. Reinforcement plate (
24) is affixed, and a heat insulating duct plate (25) buried on the insulating material side of the inner box (2>) is placed on top of this reinforcing plate, and between these reinforcing plates, the cold air into the second refrigeration temperature range room (21) is Air duct (
18), and a cold air inlet (23a) for introducing a part of the discharged cold air into the cold air blowing duct (18) is formed at the rear end of the top dug 1-plate (23). The present invention is also characterized in that a cold air outlet (23b) is provided at the tip end, which is opposite to the cold air inlet (19a) into the second freezing temperature zone chamber (21). The configuration is similar to the conventional one shown in FIG.

以上のようにこの発明のものでは、冷気吹出ダクト（１
８）の−半を形成する頂部ダクト板（２３）を、要は冷
蔵庫本体（１）の内箱（２）の頂部に一体成形させて第
６図の従来のものにおける隙間（２２）を無くして、当
該冷気吹出ダクト（１８）を通る冷気が第１冷凍温度帯
室（３）内に漏れないようにし、この第１冷凍温度帯室
（３）および第２冷凍温度帯室（２１）の温度の「ばら
つき」を無くしているものである。As described above, in this invention, the cold air blowing duct (1
The top duct plate (23) forming the -half of 8) is integrally molded on the top of the inner box (2) of the refrigerator body (1) to eliminate the gap (22) in the conventional one shown in Fig. 6. to prevent the cold air passing through the cold air blowing duct (18) from leaking into the first freezing temperature zone chamber (3), and to prevent the cold air passing through the cold air blowing duct (18) from leaking into the first freezing temperature zone chamber (3) and the second freezing temperature zone chamber (21). This eliminates "variations" in temperature.

なお上記第１図および第２図の実施例では内箱（２）の
頂部に一体成形され冷気吹出ダクトの一半を形成する頂
部ダクト板（２３）の補強のために補強板（２４）を貼
着した場合について説明したが、第３図の他の実施例に
示すように頂部ダクト板（２３）を波形に形成させて第
２図の補強板を無くして伝熱面積の拡大と補強を図って
もよく、さらに第４図の他の実施例のように断熱ダクト
板（２５）に突張り足（２５ａ）を設けて頂部ダクト板
（２３）を補強させるようにしてもよい。In the embodiments shown in FIGS. 1 and 2 above, a reinforcing plate (24) is attached to reinforce the top duct plate (23) which is integrally formed on the top of the inner box (2) and forms one half of the cold air blowing duct. Although we have explained the case where the top duct plate (23) is formed into a corrugated shape as shown in another embodiment shown in Fig. 3 and the reinforcing plate shown in Fig. 2 is eliminated, the heat transfer area is expanded and reinforced. Furthermore, as in the other embodiment shown in FIG. 4, the heat insulating duct plate (25) may be provided with tension legs (25a) to reinforce the top duct plate (23).

［発明の効果コ この発明の冷凍冷蔵庫は以上のように構成されているの
で、冷気吹出ダクト内を通る冷気が第１冷凍温度帯室内
に漏れて、その内部設定温度および第２冷凍温度帯室内
の設定温度を狂わせることなく、また第１冷凍温度帯室
の頂面には継目がないので外観的にも問題点がない。そ
の他冷気吹出ダクトの一半を形成する頂部ダクト板を、
第１冷凍温度帯室内に樋状に突出させているので伝熱面
積が拡大され、また冷蔵庫本体の内箱の断熱材側に設け
た断熱ダクト板にはその直下の頂部ダクト板に当接する
突張り足を設けているので、この頂部ダクト板の補強も
可能になるという効果も有するものである。[Effects of the Invention] Since the refrigerator-freezer of this invention is configured as described above, the cold air passing through the cold air blowing duct leaks into the first freezing temperature zone chamber, and the internal set temperature and the second freezing temperature zone chamber are changed. Since there is no seam on the top surface of the first freezing temperature zone chamber, there is no problem in terms of appearance. In addition, the top duct plate that forms one half of the cold air outlet duct,
Since it protrudes like a gutter into the first freezing temperature zone chamber, the heat transfer area is expanded, and the insulating duct plate provided on the insulating material side of the inner box of the refrigerator body has a protrusion that abuts the top duct plate directly below it. Since the tension legs are provided, it also has the effect of making it possible to reinforce the top duct plate.

【図面の簡単な説明】[Brief explanation of drawings]

第１図はこの発明の冷凍冷蔵庫の一実施例を示す要部の
垂直断面図、第２図は冷気吹出ダシ１一部の拡大垂直断
面図、第３図および第４図は第２図の他の実施例を示す
同様の垂直断面図、第５図は従来の冷凍冷蔵庫の要部の
垂直断面図、第６図はその冷気吹出ダクトの垂直断面図
である。 なお図中（１）は冷蔵庫本体、（２）は内箱、（３）は
第１冷凍温度帯室、（４）は冷凍室扉、（１８）は冷気
吹出ダクト、（１９）は開閉蓋、（２１）は第２冷凍温
度イＩＦ室、（２３）は頂部ダクト板、（２５）は断熱
ダクト板である。 その他図中同−符号は同一または相当部分を示すものと
する。FIG. 1 is a vertical sectional view of a main part of a refrigerator-freezer according to an embodiment of the present invention, FIG. 2 is an enlarged vertical sectional view of a part of a cold air blower 1, and FIGS. A similar vertical cross-sectional view showing another embodiment, FIG. 5 is a vertical cross-sectional view of the main part of a conventional refrigerator-freezer, and FIG. 6 is a vertical cross-sectional view of the cold air blowing duct. In the figure, (1) is the refrigerator body, (2) is the inner box, (3) is the first freezing temperature zone chamber, (4) is the freezer compartment door, (18) is the cold air blowing duct, and (19) is the opening/closing lid. , (21) is the second freezing temperature IF chamber, (23) is the top duct plate, and (25) is the heat insulating duct plate. In other figures, the same reference numerals indicate the same or corresponding parts.

Claims (3)

【特許請求の範囲】[Claims] （１）冷凍室である第１冷凍温度帯室の正面開口を開閉
蓋で覆い、この開閉蓋と冷凍室扉との間に第２冷凍温度
帯室を形成させ、この第２冷凍温度帯室内を上記第１冷
凍温度帯室内への冷気通路とは別の独立した専用の冷気
吹出ダクトを通して強制冷却させるようにした冷凍冷蔵
庫において、上記第１冷凍温度帯室の天井壁に、冷蔵庫
本体の内箱と一体成形の頂部ダクト板を形成させ、これ
と上記内箱の断熱材側に設けた該部の断熱ダクト板とで
上記専用の強制冷気吹出ダクトを形成させたことを特徴
とする冷凍冷蔵庫。(1) Cover the front opening of the first freezing temperature range room, which is the freezer compartment, with an opening/closing lid, forming a second freezing temperature range room between the opening/closing lid and the freezer compartment door, and forming a second freezing temperature range room inside the second freezing temperature range room. In the refrigerator-freezer, the inside of the refrigerator body is forcibly cooled through a dedicated cold air blowing duct that is separate from the cold air passage into the first freezing temperature zone chamber. A refrigerator-freezer characterized in that a top duct plate is formed integrally with the box, and this and a heat insulating duct plate of the part provided on the heat insulating material side of the inner box form the dedicated forced cold air blowing duct. . （２）第２冷凍温度帯室に連通させた冷気吹出ダクトの
一半を形成する冷蔵庫本体の内箱と一体成形の頂部ダク
ト板を、樋状に第１冷凍温度帯室内に突出させてその伝
熱面積を拡大させた特許請求の範囲第１項記載の冷凍冷
蔵庫。(2) A top duct plate integrally formed with the inner box of the refrigerator body, which forms one half of the cold air blowing duct that communicates with the second freezing temperature zone chamber, is made to protrude into the first freezing temperature zone chamber in the form of a gutter so that the air can be transmitted. The refrigerator-freezer according to claim 1, which has an expanded thermal area. （３）冷蔵庫本体の内箱の断熱材側に設けた断熱ダクト
板に、その直下の頂部ダクト板に当接するこれの補強用
突張り足を一体に付設させた特許請求の範囲第１項また
は第２項のいずれかに記載された冷凍冷蔵庫。(3) Claim 1 or 2, in which a heat insulating duct plate provided on the heat insulating material side of the inner box of the refrigerator body is integrally provided with reinforcing legs that abut the top duct plate directly below the heat insulating duct plate, or The refrigerator-freezer described in any of paragraph 2.