JP2016211756A

JP2016211756A - Storage house

Info

Publication number: JP2016211756A
Application number: JP2015092826A
Authority: JP
Inventors: 真二菊野; Shinji Kikuno
Original assignee: Fukushima Industries Corp
Current assignee: Fukushima Galilei Co Ltd
Priority date: 2015-04-30
Filing date: 2015-04-30
Publication date: 2016-12-15
Anticipated expiration: 2035-04-30
Also published as: JP6355590B2

Abstract

PROBLEM TO BE SOLVED: To provide a storage house capable of increasing rigidity of a plastic duct body, improving a structural strength, preventing damage of the duct body, accordingly capable of eliminating reduction in air blowing efficiency of a fan unit or eliminating reduction of a heat exchanging efficiency at the heat exchanger.SOLUTION: A fan unit 18 and a reinforcing body 48 for reinforcing a duct wall around a circulation port 25 are installed at the circulation port 25. A fixing seat 39 and a fastening seat for the fan unit 18 are installed at a first installation seat 42 and a second installation seat arranged at the circulation port 25, the reinforcing body 48 is fastened and fixed to the circulation port 25 with bolts inserted and passed through a surrounding wall and the fastening seat of the circulation port 25 under a state in which the reinforcing body 48 is applied to the fixing seat 39 and the fixing seat 39 is held by the first installation seat 42 and the reinforcing body 48. With this arrangement as above, three members of the first installation seat 42, the fixing seat 39 and the reinforcing body 48 are integrally assembled to reinforce rigidity of the surrounding wall of the circulation port 25, improve a structural strength and prevent damage of the duct body.SELECTED DRAWING: Figure 1

Description

本発明は、貯蔵室の内壁面に固定したプラスチック製のダクト体で熱交換室を区画し、その内部に熱交換器とファンユニットが配置されている貯蔵庫に関する。 The present invention relates to a storage compartment in which a heat exchange chamber is defined by a plastic duct body fixed to an inner wall surface of a storage chamber, and a heat exchanger and a fan unit are disposed therein.

この種の貯蔵庫は、例えば特許文献１に開示されており公知である。係る特許文献１の冷却貯蔵庫では、天井部分に冷却器が配置されており、該冷却器の下面側を覆うプラスチック製のエアダクトを貯蔵室の内壁面に固定することにより、貯蔵室の上部に冷却器室を区画している。エアダクトには左右２個の吸込口が設けられており、各吸込口には貯蔵室内の空気を冷却室へ導入する冷却ファンが固定されている。また、各吸込み口の前面にはファンカバーが装着されている。 This type of storage is disclosed, for example, in Patent Document 1 and is well known. In the cooling storage of Patent Document 1, a cooler is disposed on the ceiling portion, and a plastic air duct covering the lower surface side of the cooler is fixed to the inner wall surface of the storage chamber, thereby cooling the upper portion of the storage chamber. The chamber is partitioned. The air duct is provided with two left and right suction ports, and a cooling fan for introducing the air in the storage chamber into the cooling chamber is fixed to each suction port. A fan cover is attached to the front surface of each suction port.

特開２０１０−１８１０８５号公報JP 2010-181085 A

例えば店舗内に設置した商品陳列用の貯蔵庫の場合には、陳列形態や見栄えなどを考慮しながら陳列商品を貯蔵室内へ丁寧に収容するため、最上段の棚に収容する陳列商品がエアダクトに接触し、あるいは衝突することはない。しかし、店舗のバックヤードに設置した貯蔵庫の場合には、商品を収容するダンボール箱ごと貯蔵室内へ収容して冷却保管する場合がある。こうした場合には、重量のあるダンボール箱が最上段の棚板の上に勢いをつけて放りこまれ、あるいは箱の一部を棚板に載置したのち勢いをつけて押し込まれるなど乱暴に扱われることが多く、そのためダンボール箱がエアダクトに衝突することがある。 For example, in the case of a storehouse for product display installed in a store, the display product stored in the top shelf contacts the air duct in order to carefully store the display product in the storage room while considering the display form and appearance. Or do not collide. However, in the case of a storehouse installed in a store's backyard, the cardboard box that stores the product may be stored in the storage room and stored in a cold storage. In such a case, a heavy cardboard box is thrown into the top shelf board with momentum, or a part of the box is placed on the shelf board and then pushed in with momentum. For this reason, the cardboard box may collide with the air duct.

上記のように、ダンボール箱の取り扱いが乱暴であると、衝突するダンボール箱によってエアダクトの一部が変形し、あるいは破損することがある。とくに、特許文献１の冷却貯蔵庫のように、プラスチック成型品で形成したエアダクトの場合には、吸込口の周囲壁の剛性が低いため、吸込口の周囲壁の一部が破損し、あるいは吸込口の周囲壁に割れが生じやすい。また、吸込口の周囲壁に破損や割れが生じると、冷却ファンの駆動に伴う振動によってびびり音が発生する。さらに、吸込口の周囲壁および冷却ファンがびびり振動する状態で冷却ファンが駆動されるため、冷却ファンの送風効率が低下し、冷却器と空気の熱交換効率が低下する。貯蔵室内の空気の循環を整然と行えなくなる不利もある。 As described above, when the handling of the cardboard box is rough, a part of the air duct may be deformed or damaged by the corrugated cardboard box. In particular, in the case of an air duct formed of a plastic molded product, such as the cooling storage of Patent Document 1, since the rigidity of the peripheral wall of the suction port is low, a part of the peripheral wall of the suction port is damaged, or the suction port Cracks are likely to occur on the surrounding walls. Further, when the peripheral wall of the suction port is broken or cracked, chatter noise is generated due to vibration accompanying the driving of the cooling fan. Furthermore, since the cooling fan is driven in a state in which the peripheral wall of the suction port and the cooling fan are chattering and vibrating, the blowing efficiency of the cooling fan is lowered, and the heat exchange efficiency between the cooler and the air is lowered. There is also a disadvantage that the air circulation in the storage chamber cannot be performed in an orderly manner.

本発明の目的は、プラスチック製のダクト体の剛性を増強し構造強度を向上して、ダクト体の破損を防止でき、従って、ファンユニットの送風効率の低下、あるいは熱交換器における熱交換効率の低下を解消できる貯蔵庫を提供することにある。
本発明の目的は、ダクト体の剛性を増強しながら、ダクト体に対するファンユニットの装着を容易に行える貯蔵庫を提供することにある。 The object of the present invention is to increase the rigidity of the duct body made of plastic and improve the structural strength, thereby preventing the duct body from being damaged. Therefore, it is possible to reduce the air blowing efficiency of the fan unit or reduce the heat exchange efficiency of the heat exchanger. The object is to provide a storage that can eliminate the decline.
The objective of this invention is providing the storage which can mount | wear the fan unit easily with respect to a duct body, enhancing the rigidity of a duct body.

本発明は、貯蔵室２の内壁面にプラスチック製のダクト体１５を固定して熱交換室１６が区画されており、熱交換室１６に熱交換器１７とファンユニット１８が配置され、ファンユニット１８と正対するダクト壁に循環口２５が開口されている貯蔵庫を対象とする。循環口２５には、ファンユニット１８と、循環口２５の周囲壁を補強する補強体４８が装着されている。ファンユニット１８には、取付座３９と、取付座３９に連続して周方向複数個所に締結座３８が設けられている。循環口２５には、ファンユニット１８の取付座３９、および締結座３８を受止める、第１装着座４２と、第２装着座４３が設けられている。ファンユニット１８の取付座３９を第１装着座４２に装着し、締結座３８を第２装着座４３に装着し、補強体４８を取付座３９にあてがって第１装着座４２と補強体４８で取付座３９を挟持した状態で、循環口２５の周囲壁と締結座３８に挿通したボルト４９で補強体４８が循環口２５に締結固定されていることを特徴とする。 In the present invention, a heat exchanger chamber 16 is defined by fixing a plastic duct body 15 to the inner wall surface of the storage chamber 2, and a heat exchanger 17 and a fan unit 18 are disposed in the heat exchanger chamber 16. It is intended for a storehouse in which a circulation port 25 is opened in a duct wall facing 18. The circulation port 25 is equipped with a fan unit 18 and a reinforcing body 48 that reinforces the surrounding wall of the circulation port 25. The fan unit 18 is provided with a mounting seat 39 and fastening seats 38 at a plurality of locations in the circumferential direction continuous to the mounting seat 39. The circulation port 25 is provided with a first mounting seat 42 and a second mounting seat 43 that receive the mounting seat 39 and the fastening seat 38 of the fan unit 18. The mounting seat 39 of the fan unit 18 is mounted on the first mounting seat 42, the fastening seat 38 is mounted on the second mounting seat 43, and the reinforcing body 48 is applied to the mounting seat 39 so that the first mounting seat 42 and the reinforcing body 48 The reinforcing member 48 is fastened and fixed to the circulation port 25 by a bolt 49 inserted into the peripheral wall of the circulation port 25 and the fastening seat 38 in a state where the mounting seat 39 is sandwiched.

ファンユニット１８は、ファン本体３２と、ファン本体３２を回転駆動するモーター３３と、ファン本体３２の周囲を覆うシュラウド３４と、シュラウド３４と一体に設けたモーター支持枠３５を備えている。締結座３８は、モーター支持枠３５と一体に設けて、厚み寸法を取付座３９よりも分厚く形成する。第２装着座４３に設けたボス４５と、締結座３８のそれぞれに、ボルト４９を挿通するための挿通孔４６・４０を形成する。ボルト４９をダクト体１５の外面側から挿通孔４６・４０に挿通して、第２装着座４３のボス４５と締結座３８と補強体４８の３者をボルト４９で共締め固定する。 The fan unit 18 includes a fan main body 32, a motor 33 that rotationally drives the fan main body 32, a shroud 34 that covers the periphery of the fan main body 32, and a motor support frame 35 that is provided integrally with the shroud 34. The fastening seat 38 is provided integrally with the motor support frame 35, and is formed to have a thickness dimension larger than that of the mounting seat 39. Insertion holes 46 and 40 for inserting bolts 49 are formed in the bosses 45 provided on the second mounting seat 43 and the fastening seats 38 respectively. The bolt 49 is inserted into the insertion holes 46 and 40 from the outer surface side of the duct body 15, and the boss 45, the fastening seat 38, and the reinforcing body 48 of the second mounting seat 43 are fastened together with the bolt 49.

補強体４８を金属板材で形成した、外形形状および構造が同じ複数の補強枠体５０で構成する。ボルト４９をねじ込む雌ねじ部５１を各補強枠体５０と一体に形成する。 The reinforcing body 48 is formed of a plurality of reinforcing frame bodies 50 formed of a metal plate material and having the same outer shape and structure. A female screw portion 51 into which the bolt 49 is screwed is formed integrally with each reinforcing frame 50.

循環口２５の周囲壁の複数個所に、補強枠体５０を係合保持する弾性係合爪５５を設ける。取付座３９にあてがった補強枠体５０を、弾性係合爪５５で仮組み保持して位置決めする。 Elastic engagement claws 55 for engaging and holding the reinforcing frame 50 are provided at a plurality of locations on the peripheral wall of the circulation port 25. The reinforcing frame 50 applied to the mounting seat 39 is temporarily held by the elastic engagement claws 55 and positioned.

循環口２５の周囲を囲むように循環口２５と同形の補強筒壁４１を形成する。補強筒壁４１の内面に第１装着座４２および第２装着座４３を形成する。 A reinforcing cylinder wall 41 having the same shape as the circulation port 25 is formed so as to surround the circulation port 25. A first mounting seat 42 and a second mounting seat 43 are formed on the inner surface of the reinforcing cylindrical wall 41.

循環口２５の外面側に通気可能に構成されたファンカバー６２を配置する。ファンカバー６２は、補強体４８を締結固定するボルト４９でダクト体１５に固定する。 A fan cover 62 configured to allow ventilation is disposed on the outer surface side of the circulation port 25. The fan cover 62 is fixed to the duct body 15 with bolts 49 that fasten and fix the reinforcing body 48.

循環口２５の周囲壁に、循環口２５を通過する熱交換前の空気の温度を測定する温度センサー５９を配置する。温度センサー５９は、循環口２５の周囲壁に形成したセンサーポケット６０に収容して、センサーポケット６０の開口面を塞ぐ補強体４８で固定する。 A temperature sensor 59 for measuring the temperature of the air before heat exchange passing through the circulation port 25 is disposed on the peripheral wall of the circulation port 25. The temperature sensor 59 is accommodated in a sensor pocket 60 formed on the peripheral wall of the circulation port 25, and is fixed by a reinforcing body 48 that closes the opening surface of the sensor pocket 60.

本発明においては、ファンユニット１８の取付座３９および締結座３８を、第１装着座４２および第２装着座４３に装着し、第１装着座４２と補強体４８で取付座３９を挟持した状態で、ファンユニット１８と補強体４８をボルト４９で循環口２５に締結固定した。こうしたダクト体１５によれば、第１装着座４２と取付座３９と補強体４８の３者を一体化して、循環口２５の周囲壁の剛性を増強して構造強度を向上できる。従って、貯蔵室２内への商品の収納が乱暴に行われて、ダクト体１５に大きな外力や衝撃が作用する場合でも、循環口２５の周囲壁などが破損するのを確実に防止できる。また、循環口２５の周囲壁が破損することに伴う、ファンユニット１８の送風効率の低下や、熱交換器１７における熱交換効率の低下を解消できる。 In the present invention, the mounting seat 39 and the fastening seat 38 of the fan unit 18 are mounted on the first mounting seat 42 and the second mounting seat 43, and the mounting seat 39 is sandwiched between the first mounting seat 42 and the reinforcing body 48. Thus, the fan unit 18 and the reinforcing body 48 were fastened and fixed to the circulation port 25 with bolts 49. According to such a duct body 15, the first mounting seat 42, the mounting seat 39, and the reinforcing body 48 can be integrated to enhance the rigidity of the peripheral wall of the circulation port 25 and improve the structural strength. Therefore, even if the storage of the product in the storage chamber 2 is performed roughly and a large external force or impact is applied to the duct body 15, it is possible to reliably prevent the surrounding wall of the circulation port 25 from being damaged. Moreover, the fall of the ventilation efficiency of the fan unit 18 accompanying the surrounding wall of the circulation port 25 being damaged, and the fall of the heat exchange efficiency in the heat exchanger 17 can be eliminated.

ボルト４９をダクト体１５の外面側から挿通孔４６・４０に挿通して、第２装着座４３のボス４５と分厚い締結座３８と補強体４８の３者をボルト４９で共締め固定すると、締結座３８を第２装着座４３と補強体４８で確りと挟持できる。ファン本体３２やモーター３３を支持するモーター支持枠３５は、締結座３８に一体に設けられているため、第２装着座４３と補強体４８で締結座３８を確りと挟持することにより、ファンユニット１８を強固に循環口２５に装着できる。従って、モーター３３の駆動に伴う振動によってびびり音が発生するのを防止でき、また、ファンユニット１８の駆動に伴う振動に起因する、ファンユニット１８の送風効率の低下を解消でき、熱交換後の空気を貯蔵室２内で適正に循環させることができる。 When the bolt 49 is inserted into the insertion holes 46 and 40 from the outer surface side of the duct body 15 and the boss 45 of the second mounting seat 43, the thick fastening seat 38 and the reinforcing body 48 are fastened together with the bolt 49, the bolt 49 is fastened. The seat 38 can be securely held between the second mounting seat 43 and the reinforcing body 48. Since the motor support frame 35 that supports the fan main body 32 and the motor 33 is provided integrally with the fastening seat 38, the fan unit is secured by firmly holding the fastening seat 38 between the second mounting seat 43 and the reinforcing body 48. 18 can be firmly attached to the circulation port 25. Therefore, chatter noise can be prevented from being generated by vibration associated with the driving of the motor 33, and a decrease in the blowing efficiency of the fan unit 18 due to vibration associated with the driving of the fan unit 18 can be eliminated. Air can be properly circulated in the storage chamber 2.

補強体４８を金属板材で形成すると、剛性の高い補強体４８とすることができ、ボルト４９で締結固定する際に、補強体４８が変形することがなく、循環口２５にファンユニット１８と補強体４８をより強固に装着できる。従って、循環口２５の周囲壁の剛性をさらに増強し構造強度を向上できる。また、補強体４８を外形形状および構造が同じ複数の補強枠体５０で構成すると、補強体４８をリング状の１個の部品で形成する場合に比べて、部品サイズを小型化し補強体４８の製造を容易化できる。また、部品サイズが小さい分、取り扱いが容易となり組付け作業を簡便化できる。外形形状および構造が同じ複数の補強枠体５０によれば、例えば補強枠体５０の外形形状が複数種ある場合に必要な組付け位置の確認作業を省くことができ、補強枠体５０の組付け作業のミスを一掃できる。さらに、雌ねじ部５１を各補強枠体５０と一体に形成すると、別途ボルト４９をねじ込むための部品を用意する必要がなく部品点数を削減できる。 When the reinforcing body 48 is formed of a metal plate material, it can be made a highly rigid reinforcing body 48. When the fastening body 48 is fastened and fixed with the bolt 49, the reinforcing body 48 is not deformed, and the fan unit 18 and the circulation port 25 are reinforced. The body 48 can be attached more firmly. Therefore, the rigidity of the surrounding wall of the circulation port 25 can be further increased and the structural strength can be improved. Further, when the reinforcing body 48 is constituted by a plurality of reinforcing frame bodies 50 having the same outer shape and structure, the size of the parts can be reduced and the size of the reinforcing body 48 can be reduced as compared with the case where the reinforcing body 48 is formed by one ring-shaped part. Manufacturing can be facilitated. In addition, since the component size is small, handling is facilitated, and assembly work can be simplified. According to the plurality of reinforcing frame bodies 50 having the same outer shape and structure, for example, it is possible to omit an assembling position confirmation operation required when there are a plurality of types of outer shape of the reinforcing frame body 50. Can eliminate mistakes in attaching work. Furthermore, if the female screw part 51 is formed integrally with each reinforcing frame 50, it is not necessary to prepare a part for screwing the bolt 49 separately, and the number of parts can be reduced.

取付座３９にあてがった補強枠体５０を、弾性係合爪５５で仮組み保持して位置決めすると、補強枠体５０を弾性係合爪５５に係合させるだけで循環口２５にファンユニット１８および補強体４８を所定位置に仮固定できる。従って、循環口２５へのファンユニット１８および補強体４８の組付け作業を容易化できる。また、補強枠体５０の雌ねじ部５１にボルト４９をねじ込む際に、補強枠体５０を手で保持する必要がなく、ボルト４９の締結作業を簡便化できる。さらに、ファンユニット１８は、弾性係合爪５５の係合状態を解除しない限り循環口２５から分離しないため、例えばボルト４９に緩みが生じた場合でも、循環口２５に対するファンユニット１８の位置がずれることがない。従って、送風効率が低下することなくファンユニット１８による熱交換用の空気の送給を継続できる。 When the reinforcing frame body 50 applied to the mounting seat 39 is temporarily held and positioned by the elastic engagement claws 55, the fan unit 18 and the circulation port 25 are simply connected to the elastic engagement claws 55. The reinforcing body 48 can be temporarily fixed at a predetermined position. Therefore, the assembly work of the fan unit 18 and the reinforcing body 48 to the circulation port 25 can be facilitated. In addition, when the bolt 49 is screwed into the female thread portion 51 of the reinforcing frame 50, it is not necessary to hold the reinforcing frame 50 by hand, and the fastening operation of the bolt 49 can be simplified. Further, since the fan unit 18 is not separated from the circulation port 25 unless the engagement state of the elastic engagement claw 55 is released, for example, even when the bolt 49 is loosened, the position of the fan unit 18 with respect to the circulation port 25 is shifted. There is nothing. Therefore, the supply of air for heat exchange by the fan unit 18 can be continued without lowering the blowing efficiency.

循環口２５の周囲を囲む補強筒壁４１の内面に第１装着座４２および第２装着座４３を形成すると、補強筒壁４１で循環口２５の周囲壁の剛性をさらに増強して構造強度を向上でき、ダクト体１５が破損するのを確実に防止できる。 When the first mounting seat 42 and the second mounting seat 43 are formed on the inner surface of the reinforcing cylindrical wall 41 surrounding the circulation port 25, the reinforcing cylindrical wall 41 further enhances the rigidity of the peripheral wall of the circulating port 25 and increases the structural strength. It can improve and it can prevent reliably that the duct body 15 is damaged.

補強体４８を締結固定するボルト４９でダクト体１５にファンカバー６２を固定すると、ダクト体１５に対するファンユニット１８および補強体４８の組付け作業と同時にファンカバー６２を固定できる。従って、ダクト体１５に対する補強体４８、ファンユニット１８、ファンカバー６２の３者の組付け作業を簡便化できる。 When the fan cover 62 is fixed to the duct body 15 with the bolts 49 that fasten and fix the reinforcing body 48, the fan cover 62 can be fixed simultaneously with the assembly operation of the fan unit 18 and the reinforcing body 48 to the duct body 15. Accordingly, it is possible to simplify the assembly work of the reinforcing body 48, the fan unit 18, and the fan cover 62 with respect to the duct body 15.

センサーポケット６０に収容される温度センサー５９を、センサーポケット６０の開口面を塞ぐ補強体４８で固定すると、補強体４８を利用して温度センサー５９を固定するため、温度センサー５９を別途固定するための手間を省くことができる。 When the temperature sensor 59 accommodated in the sensor pocket 60 is fixed by the reinforcing body 48 that closes the opening surface of the sensor pocket 60, the temperature sensor 59 is fixed by using the reinforcing body 48, so that the temperature sensor 59 is fixed separately. Can be saved.

本発明に係るショーケースのダクト体における循環口の横断平面図である。It is a cross-sectional top view of the circulation port in the duct body of the showcase which concerns on this invention. ショーケースの正面図である。It is a front view of a showcase. ショーケースの縦断側面図である。It is a vertical side view of a showcase. 図２におけるＡ−Ａ線断面図である。It is the sectional view on the AA line in FIG. ダクト体の斜視図である。It is a perspective view of a duct body. ダクト体からファンカバー、ファンユニット、温度センサー、および補強体を分離した状態を示す側面図である。It is a side view which shows the state which isolate | separated the fan cover, the fan unit, the temperature sensor, and the reinforcement body from the duct body. ダクト体からファンユニット、温度センサー、および補強体を分離した状態を示す背面図である。It is a rear view which shows the state which isolate | separated the fan unit, the temperature sensor, and the reinforcement body from the duct body. ダクト体からファンカバーを分離した状態を示す正面図である。It is a front view which shows the state which isolate | separated the fan cover from the duct body. 図８におけるＢ−Ｂ線断面図である。It is the BB sectional view taken on the line in FIG. ダクト体の固定構造を示す説明図である。It is explanatory drawing which shows the fixing structure of a duct body.

（実施例）図１から図１０に本発明に係る貯蔵庫をリーチイン型の冷蔵ショーケースに適用した実施例を示す。本実施例における前後、左右、上下とは、図２および図３に示す矢印と、各矢印の近傍に表記した前後、左右、上下の表示に従う。両図に示すように、ショーケース本体１の内部には冷蔵室（貯蔵室）２が設けられており、その前面開口部３は左右一対のスライドドア４・４でスライド開閉できる。 (Example) FIGS. 1-10 shows the Example which applied the storage which concerns on this invention to the reach-in type refrigerated showcase. In the present embodiment, front and rear, left and right, and up and down follow the arrows shown in FIGS. 2 and 3 and the front and rear, left and right, and top and bottom displays written in the vicinity of each arrow. As shown in both figures, a refrigeration room (storage room) 2 is provided inside the showcase body 1, and the front opening 3 can be slid open and closed by a pair of left and right sliding doors 4.

各スライドドア４は、前面開口部３の上下に配置したガイド枠５・５でスライド自在に支持されている。各スライドドア４の閉じ先端側の側面には、上下にわたってドアパッキン６が設けられており、各ドアパッキン６の内部には棒状の磁石が配置されている。各ドアパッキン６の磁石が、前面開口部３の左右に配置した縦枠７・７に固定した磁気吸着板に吸着することにより、各スライドドア４が閉じ状態に保持されて、前面開口部３が封止される。冷蔵室２の内部には複数の棚板８が配されており、棚板８上に例えば飲料容器を載置して冷却保管する。ショーケース本体１の下方には機械室１０が配置されており、冷凍機を構成する圧縮器１１、凝縮器１２、および送風ファン１３などが収容されている。 Each sliding door 4 is slidably supported by guide frames 5 and 5 arranged above and below the front opening 3. A door packing 6 is provided vertically on the side surface of each sliding door 4 on the closed front end side, and a bar-shaped magnet is disposed inside each door packing 6. The magnets of the door packings 6 are attracted to the magnetic adsorption plates fixed to the vertical frames 7 and 7 disposed on the left and right of the front opening 3, so that the slide doors 4 are held in a closed state. Is sealed. A plurality of shelf boards 8 are arranged inside the refrigerator compartment 2, and a beverage container, for example, is placed on the shelf board 8 to be cooled and stored. A machine room 10 is disposed below the showcase body 1 and houses a compressor 11, a condenser 12, a blower fan 13, and the like that constitute a refrigerator.

図４に示すように冷蔵室２の上部の内壁面には、プラスチック製のダクト体１５が固定されて熱交換室１６が区画されており、熱交換室１６に冷凍機を構成する蒸発器（熱交換器）１７と２個のファンユニット１８が配置されている。蒸発器１７はショーケース本体１の上壁にブラケット（図示していない）で固定されており、熱交換により冷蔵室２内の空気を冷却する。ファンユニット１８はダクト体１５に装着されており、蒸発器１７に熱交換用の空気を送給し、蒸発器１７で冷却された空気を冷蔵室２内で循環させる。 As shown in FIG. 4, a plastic duct body 15 is fixed to the upper inner wall surface of the refrigerator compartment 2 to define a heat exchange chamber 16, and an evaporator ( A heat exchanger 17 and two fan units 18 are arranged. The evaporator 17 is fixed to the upper wall of the showcase body 1 with a bracket (not shown), and cools the air in the refrigerator compartment 2 by heat exchange. The fan unit 18 is attached to the duct body 15, supplies heat exchange air to the evaporator 17, and circulates the air cooled by the evaporator 17 in the refrigerator compartment 2.

図４および図５に示すようにダクト体１５は、複数のダクト壁で上面と後面に開口を有する箱体状に形成されている。ダクト壁は、垂直の前壁２０と、略水平の下壁２１と、下壁２１の後端に連続する後壁２２と、前壁２０の下端と下壁２１の前端に連続する傾斜壁２３と、両側端に配置されて各壁２０・２１・２２・２３に連続する左右の側壁２４・２４とで構成されている。先のファンユニット１８は傾斜壁２３の左右に装着されており、各ファンユニット１８と正対する傾斜壁２３にそれぞれ循環口２５が開口されている。下壁２１は、蒸発器１７の除霜時に生じる除霜水を受止めるドレンパンを兼ねており、左右略中央に設けた排水溝２６からショーケース本体１の後壁に設けた排水受け２７へと除霜水を排水する。排水受け２７で受止めた除霜水は、機械室１０の下方に設けたドレンパン２８へと排水される。ダクト体１５の前壁２０と傾斜壁２３には、両壁２０・２３に跨るように逃げ凹部２９が設けられており、冷蔵室２内の照明器具や支柱（図示していない）との接触を回避している。図５において符号３０は、前壁２０および傾斜壁２３の側端寄りを補強する補強リブである。 As shown in FIGS. 4 and 5, the duct body 15 is formed in a box shape having openings on the upper surface and the rear surface of a plurality of duct walls. The duct wall includes a vertical front wall 20, a substantially horizontal lower wall 21, a rear wall 22 that continues to the rear end of the lower wall 21, and an inclined wall 23 that continues to the lower end of the front wall 20 and the front end of the lower wall 21. And left and right side walls 24, 24 arranged on both side ends and continuing to the walls 20, 21, 22, 23. The previous fan units 18 are mounted on the left and right of the inclined walls 23, and the circulation ports 25 are opened in the inclined walls 23 facing the respective fan units 18. The lower wall 21 also serves as a drain pan that receives defrosted water generated when the evaporator 17 is defrosted, from the drainage groove 26 provided at the substantially right and left center to the drainage receiver 27 provided on the rear wall of the showcase body 1. Drain defrost water. The defrost water received by the drain receiver 27 is drained to a drain pan 28 provided below the machine room 10. The front wall 20 and the inclined wall 23 of the duct body 15 are provided with relief recesses 29 so as to straddle both walls 20 and 23, and contact with lighting fixtures and support posts (not shown) in the refrigerator compartment 2. Is avoiding. In FIG. 5, reference numeral 30 denotes a reinforcing rib that reinforces the side walls of the front wall 20 and the inclined wall 23.

図１および図７に示すようにファンユニット１８は、ファン羽根を備えるファン本体３２と、ファン本体３２を回転駆動するモーター３３と、ファン本体３２の周囲を覆うシュラウド３４と、シュラウド３４と一体に設けたモーター支持枠３５を備えている。シュラウド３４は入口側の開口直径が大きく、出口側の開口直径が小さいベルマウス型に形成されている。モーター支持枠３５は、モーター３３が固定されるモーターホルダー３６と、モーターホルダー３６の周縁から延設されて、モーターホルダー３６とシュラウド３４を連結する４個の支持アーム３７と、各支持アーム３７の先端に一体に設けられる締結座３８とを備えている。支持アーム３７は、モーターホルダー３６の周方向に等間隔おきに形成されている。シュラウド３４の入口側には、隣接する締結座３８の間において、取付座３９がそれぞれ外向きに張り出し形成されている。これにより、シュラウド３４の外周部に締結座３８と取付座３９とが交互に連続する状態で配置されている。締結座３８は、その厚み寸法が取付座３９よりも分厚く形成されており、トラスねじ（ボルト）４９を挿通するための挿通孔４０が形成されている。 As shown in FIGS. 1 and 7, the fan unit 18 includes a fan main body 32 including fan blades, a motor 33 that rotationally drives the fan main body 32, a shroud 34 that covers the periphery of the fan main body 32, and the shroud 34. The provided motor support frame 35 is provided. The shroud 34 is formed in a bell mouth shape having a large opening diameter on the inlet side and a small opening diameter on the outlet side. The motor support frame 35 includes a motor holder 36 to which the motor 33 is fixed, four support arms 37 that extend from the periphery of the motor holder 36, connect the motor holder 36 and the shroud 34, and each support arm 37. And a fastening seat 38 provided integrally with the tip. The support arms 37 are formed at equal intervals in the circumferential direction of the motor holder 36. On the inlet side of the shroud 34, mounting seats 39 are formed so as to project outwardly between adjacent fastening seats 38. As a result, the fastening seats 38 and the mounting seats 39 are alternately arranged on the outer periphery of the shroud 34. The fastening seat 38 is formed so that its thickness dimension is thicker than that of the mounting seat 39, and an insertion hole 40 for inserting a truss screw (bolt) 49 is formed.

図６および図７に示すように循環口２５は、４個の凹所が周方向に等間隔で設けられた略円状の開口であり、この循環口２５の周囲を囲むように、循環口２５と同形の補強筒壁４１が傾斜壁２３の内面側に形成されている。補強筒壁４１の後側の内面には、ファンユニット１８の取付座３９を受止める第１装着座４２と、締結座３８を受止める第２装着座４３が形成されている。循環口２５の円弧縁部分に第１装着座４２が形成され、凹所部分に第２装着座４３が形成されて、第１装着座４２と第２装着座４３とは循環口２５の周囲に交互に設けられている。これら第１装着座４２および第２装着座４３の先端部分で真円状の開口が形成されている。第１装着座４２は断面Ｌ字状に形成されており、取付座３９を受止めた際に第１装着座４２が撓み変形するのを防止している（図１参照）。第２装着座４３の外面側にはボス４５が設けられており、ボス４５および第２装着座４３を貫通するようにトラスねじ４９を挿通するための挿通孔４６が形成されている（図９参照）。ファンユニット１８の取付座３９および締結座３８を、第１装着座４２および第２装着座４３で受止めた状態では、補強筒壁４１の先端面４１ａと、締結座３８および取付座３９の挟持座面３８ａ・３９ａとは面一状になっている（図１、図９参照）。 As shown in FIGS. 6 and 7, the circulation port 25 is a substantially circular opening in which four recesses are provided at equal intervals in the circumferential direction, and the circulation port 25 is surrounded so as to surround the circulation port 25. A reinforcing cylinder wall 41 having the same shape as that of the wall 25 is formed on the inner surface side of the inclined wall 23. A first mounting seat 42 that receives the mounting seat 39 of the fan unit 18 and a second mounting seat 43 that receives the fastening seat 38 are formed on the inner surface on the rear side of the reinforcing cylindrical wall 41. A first mounting seat 42 is formed at the arc edge portion of the circulation port 25, a second mounting seat 43 is formed at the recessed portion, and the first mounting seat 42 and the second mounting seat 43 are around the circulation port 25. It is provided alternately. A perfect circular opening is formed at the tip of the first mounting seat 42 and the second mounting seat 43. The first mounting seat 42 has an L-shaped cross section, and prevents the first mounting seat 42 from being bent and deformed when the mounting seat 39 is received (see FIG. 1). A boss 45 is provided on the outer surface side of the second mounting seat 43, and an insertion hole 46 through which the truss screw 49 is inserted so as to penetrate the boss 45 and the second mounting seat 43 is formed (FIG. 9). reference). In a state where the mounting seat 39 and the fastening seat 38 of the fan unit 18 are received by the first mounting seat 42 and the second mounting seat 43, the front end surface 41 a of the reinforcing cylindrical wall 41 and the fastening seat 38 and the mounting seat 39 are clamped. It is flush with the seating surfaces 38a and 39a (see FIGS. 1 and 9).

循環口２５には、ファンユニット１８と共に、循環口２５の周囲の傾斜壁（ダクト壁）２３を補強する金属製の補強体４８が装着されている。図７に示すように補強体４８はステンレス鋼板（金属板材）で形成された、外形形状および構造が同じ２個の補強枠体５０で構成されており、各補強枠体５０にトラスねじ４９がねじ込まれる２個の雌ねじ部５１が一体に形成されている。雌ねじ部５１は、ステンレス鋼板にバーリング加工を施し、形成された貫通孔にタップ加工を施して形成する。補強枠体５０は、第１装着座４２で受止められた取付座３９を挟持する挟持板部５２と、第２装着座４３で受止められた締結座３８を挟持する上下の固定板部５３とで三日月状に形成されており、図７において上下中央を通る中央線を対称軸にして線対称に形成されている。固定板部５３に先の雌ねじ部５１が形成されている。挟持板部５２の内方縁部の外形形状は、取付座３９の形状に対応する円弧状に形成されている。 In addition to the fan unit 18, a metal reinforcing body 48 that reinforces an inclined wall (duct wall) 23 around the circulation port 25 is attached to the circulation port 25. As shown in FIG. 7, the reinforcing body 48 is composed of two reinforcing frame bodies 50 formed of a stainless steel plate (metal plate material) and having the same outer shape and structure. A truss screw 49 is provided on each reinforcing frame body 50. Two female screw portions 51 to be screwed are integrally formed. The female thread portion 51 is formed by performing a burring process on a stainless steel plate and performing a tapping process on the formed through hole. The reinforcing frame 50 includes a holding plate portion 52 that holds the mounting seat 39 received by the first mounting seat 42 and upper and lower fixed plate portions 53 that hold the fastening seat 38 received by the second mounting seat 43. Are formed in a crescent shape and are symmetrical with respect to a center line passing through the center in the vertical direction in FIG. The female screw portion 51 is formed on the fixed plate portion 53. The outer shape of the inner edge portion of the sandwiching plate portion 52 is formed in an arc shape corresponding to the shape of the mounting seat 39.

ダクト体１５へのファンユニット１８および補強体４８の装着を容易化するために、循環口２５の周囲の傾斜壁２３の複数個所に、補強枠体５０を係合保持する弾性係合爪５５が設けられている。この実施例では、図７に示すように循環口２５の左半周面と右半周面のそれぞれに３個の弾性係合爪５５を設けて、各弾性係合爪５５に補強枠体５０の上下および中央を係合することにより、補強枠体５０を係合保持できるようにした。上下の弾性係合爪５５と中央の弾性係合爪５５は、補強枠体５０の周縁を対向する状態で係合する。補強筒壁４１の左右には、同筒壁４１に連続して２個の受止め座５６がそれぞれ設けられており、弾性係合爪５５で係合保持されている補強枠体５０は、補強筒壁４１および受止め座５６で受止められている。また、弾性係合爪５５の係合部分に隣接する固定板部５３には規制突片５７が設けられており、弾性係合爪５５で係合保持されている補強枠体５０が、同枠体５０の長手方向へ移動するのを規制突片５７で規制している。なお、補強枠体５０の短手方向への移動は、弾性係合爪５５により規制されている。ファンユニット１８の取付座３９および締結座３８を、第１装着座４２および第２装着座４３に装着し、２個の補強枠体５０を弾性係合爪５５で係合保持することにより、ファンユニット１８および補強枠体５０は、仮組み保持されて位置決めされる。 In order to facilitate mounting of the fan unit 18 and the reinforcing body 48 to the duct body 15, elastic engaging claws 55 for engaging and holding the reinforcing frame body 50 are provided at a plurality of positions on the inclined wall 23 around the circulation port 25. Is provided. In this embodiment, as shown in FIG. 7, three elastic engagement claws 55 are provided on each of the left half peripheral surface and the right half peripheral surface of the circulation port 25, and the upper and lower sides of the reinforcing frame body 50 are provided on each elastic engagement claw 55. Further, the reinforcing frame 50 can be engaged and held by engaging the center. The upper and lower elastic engagement claws 55 and the central elastic engagement claw 55 engage with each other with the peripheral edge of the reinforcing frame 50 facing each other. Two receiving seats 56 are respectively provided on the left and right sides of the reinforcing cylindrical wall 41 so as to be continuous with the cylindrical wall 41, and the reinforcing frame body 50 engaged and held by the elastic engaging claws 55 is provided with a reinforcing member. It is received by the cylindrical wall 41 and the receiving seat 56. The fixing plate portion 53 adjacent to the engagement portion of the elastic engagement claw 55 is provided with a regulation protrusion 57, and the reinforcing frame 50 engaged and held by the elastic engagement claw 55 is provided in the same frame. The movement of the body 50 in the longitudinal direction is restricted by the restriction protrusion 57. In addition, the movement of the reinforcing frame 50 in the short direction is restricted by the elastic engagement claw 55. The mounting seat 39 and the fastening seat 38 of the fan unit 18 are mounted on the first mounting seat 42 and the second mounting seat 43, and the two reinforcing frame bodies 50 are engaged and held by the elastic engaging claws 55, whereby the fan The unit 18 and the reinforcing frame 50 are temporarily assembled and positioned.

循環口２５の周囲の傾斜壁２３に、循環口２５を通過する熱交換前の空気の温度を測定する温度センサー５９が配置されている。図１および図６に示すように温度センサー５９は、補強筒壁４１に隣接して形成したセンサーポケット６０に収容されており、センサーポケット６０の開口面を補強枠体５０（補強体４８）で塞ぐことにより、温度センサー５９が固定されている。補強枠体５０の温度センサー５９に対応する部分には２個の通気開口６１が形成されて、温度センサー５９に直接熱交換風が接触するようにしている（図７参照）。温度センサー５９は、左右いずれか一方の循環口２５に設けられる。 A temperature sensor 59 that measures the temperature of the air before heat exchange that passes through the circulation port 25 is disposed on the inclined wall 23 around the circulation port 25. As shown in FIGS. 1 and 6, the temperature sensor 59 is accommodated in a sensor pocket 60 formed adjacent to the reinforcing cylinder wall 41, and the opening surface of the sensor pocket 60 is covered with a reinforcing frame 50 (reinforcing body 48). The temperature sensor 59 is fixed by closing. Two ventilation openings 61 are formed in the portion of the reinforcing frame 50 corresponding to the temperature sensor 59 so that the heat exchange air directly contacts the temperature sensor 59 (see FIG. 7). The temperature sensor 59 is provided at either the left or right circulation port 25.

循環口２５の外面側には、循環口２５を覆うように通気可能に構成されたファンカバー６２が配置されている。図１および図８に示すようにファンカバー６２は、略丸枠状のカバー枠６３と、カバー枠６３の開口を通気自在に区分する皿状の格子体６４とで構成されている。また、カバー枠６３は、上側左右の後面に、傾斜壁２３に開口した係止口６５（図８参照）に係止される係止フック６６を備えており、下側左右にトラスねじ４９を挿通するための挿通孔６７が形成されている。ファンカバー６２は、係止口６５に係止フック６６を係止した状態で、トラスねじ４９を利用して、ダクト体１５に固定される。 A fan cover 62 configured to be able to vent so as to cover the circulation port 25 is disposed on the outer surface side of the circulation port 25. As shown in FIGS. 1 and 8, the fan cover 62 includes a substantially round frame-shaped cover frame 63 and a plate-shaped lattice body 64 that divides the opening of the cover frame 63 so as to allow air to pass therethrough. Further, the cover frame 63 is provided with locking hooks 66 that are locked to locking holes 65 (see FIG. 8) opened in the inclined wall 23 on the upper left and right rear surfaces, and truss screws 49 are mounted on the lower left and right. An insertion hole 67 for insertion is formed. The fan cover 62 is fixed to the duct body 15 using the truss screw 49 in a state where the locking hook 66 is locked to the locking port 65.

ここで、ダクト体１５へのファンユニット１８および補強体４８の装着手順を説明する。まず、取付座３９を第１装着座４２に装着し、締結座３８を第２装着座４３に装着する。次いで、センサーポケット６０に温度センサー５９を収容し、２個の補強枠体５０の挟持板部５２をファンユニット１８の左右に形成した取付座３９の挟持座面３９ａにそれぞれあてがって、補強枠体５０を弾性係合爪５５に係合させる。これにより、補強枠体５０は弾性係合爪５５で仮組み保持され位置決めされる。この状態では、取付座３９は第１装着座４２と補強枠体５０の挟持板部５２で挟持されており、締結座３８は第２装着座４３と補強枠体５０の固定板部５３で挟持されている。また、補強枠体５０でセンサーポケット６０の開口面の一部を塞ぐことにより、温度センサー５９がセンサーポケット６０に固定される。 Here, a procedure for mounting the fan unit 18 and the reinforcing body 48 to the duct body 15 will be described. First, the mounting seat 39 is mounted on the first mounting seat 42, and the fastening seat 38 is mounted on the second mounting seat 43. Next, the temperature sensor 59 is accommodated in the sensor pocket 60, and the sandwiching plate portions 52 of the two reinforcing frame bodies 50 are respectively applied to the sandwiching seat surfaces 39a of the mounting seats 39 formed on the left and right sides of the fan unit 18, respectively. 50 is engaged with the elastic engagement claw 55. As a result, the reinforcing frame 50 is temporarily held and positioned by the elastic engagement claws 55. In this state, the mounting seat 39 is sandwiched between the first mounting seat 42 and the sandwiching plate portion 52 of the reinforcing frame body 50, and the fastening seat 38 is sandwiched between the second mounting seat 43 and the fixing plate portion 53 of the reinforcing frame body 50. Has been. Further, the temperature sensor 59 is fixed to the sensor pocket 60 by closing a part of the opening surface of the sensor pocket 60 with the reinforcing frame 50.

次に、上側２個のトラスねじ４９をダクト体１５の外面側から第２装着座４３のボス４５、および締結座３８に形成した挿通孔４６・４０に挿通し、補強枠体５０の雌ねじ部５１にねじ込んで締結固定する。最後に、ファンカバー６２の係止フック６６を係止口６５に差込んで係止し、下側２個のトラスねじ４９をファンカバー６２の外面側から挿通孔６７・４６・４０に挿通し、補強枠体５０の雌ねじ部５１にねじ込んで締結固定する。これにて、ダクト体１５へのファンユニット１８、補強体４８、およびファンカバー６２の装着が完了する。 Next, the upper two truss screws 49 are inserted from the outer surface side of the duct body 15 into the bosses 45 of the second mounting seat 43 and the insertion holes 46 and 40 formed in the fastening seat 38, and the female thread portion of the reinforcing frame body 50 is inserted. Screw into 51 and fasten. Finally, the locking hook 66 of the fan cover 62 is inserted into the locking port 65 and locked, and the two lower truss screws 49 are inserted into the insertion holes 67, 46, and 40 from the outer surface side of the fan cover 62. Then, it is screwed into the female screw portion 51 of the reinforcing frame 50 and fastened. Thus, the mounting of the fan unit 18, the reinforcing body 48, and the fan cover 62 to the duct body 15 is completed.

ファンユニット１８、補強体４８、およびファンカバー６２の装着が完了したダクト体１５は、冷蔵室２の上部に固定された蒸発器１７を覆うように冷蔵室２の内壁面に固定される。図５に示すようにダクト体１５の逃げ凹部２９には、２個の内固定座７０が形成され、左右の側壁２４・２４にはそれぞれ外固定座７１が形成されている。図１０に示すように各外固定座７１の後端をショーケース本体１の上壁内面に固定した支持フック７２に係止したのち、トラスねじ７３を内固定座７０および外固定座７１に形成した挿通孔７４に挿通し、ショーケース本体１の上壁に内装したナット７５にねじ込む。これにて、冷蔵室２の内壁面へのダクト体１５の固定が完了し、冷蔵室２の上部にファンユニット１８と蒸発器１７を収容する熱交換室１６が区画される。 The duct body 15 in which the fan unit 18, the reinforcing body 48, and the fan cover 62 are completely attached is fixed to the inner wall surface of the refrigerator compartment 2 so as to cover the evaporator 17 fixed to the upper part of the refrigerator compartment 2. As shown in FIG. 5, two inner fixing seats 70 are formed in the escape recess 29 of the duct body 15, and outer fixing seats 71 are formed on the left and right side walls 24 and 24, respectively. As shown in FIG. 10, after the rear end of each outer fixed seat 71 is locked to a support hook 72 fixed to the inner wall of the upper wall of the showcase body 1, truss screws 73 are formed in the inner fixed seat 70 and the outer fixed seat 71. Is inserted into the inserted through-hole 74 and screwed into a nut 75 built in the upper wall of the showcase body 1. Thus, the fixing of the duct body 15 to the inner wall surface of the refrigerator compartment 2 is completed, and the heat exchange chamber 16 that accommodates the fan unit 18 and the evaporator 17 is partitioned at the upper portion of the refrigerator compartment 2.

以上のように本実施例のショーケースにおいては、第１装着座４２と補強体４８で取付座３９を挟持して循環口２５に補強体４８をトラスねじ４９で締結固定したので、第１装着座４２と取付座３９と補強体４８の３者を一体化して、循環口２５の周囲壁の剛性を増強して構造強度を向上できる。従って、貯蔵室２内への商品の収納が乱暴に行われて、ダクト体１５に大きな外力や衝撃が作用する場合でも、循環口２５の周囲壁などが破損するのを確実に防止できる。また、循環口２５の周囲壁が破損することに伴う、ファンユニット１８の送風効率の低下や、蒸発器１７における熱交換効率の低下を解消できる。 As described above, in the showcase of this embodiment, the mounting seat 39 is sandwiched between the first mounting seat 42 and the reinforcing body 48, and the reinforcing body 48 is fastened and fixed to the circulation port 25 with the truss screw 49. By integrating the seat 42, the mounting seat 39, and the reinforcing body 48, the rigidity of the peripheral wall of the circulation port 25 can be increased to improve the structural strength. Therefore, even if the storage of the product in the storage chamber 2 is performed roughly and a large external force or impact is applied to the duct body 15, it is possible to reliably prevent the surrounding wall of the circulation port 25 from being damaged. Moreover, the fall of the ventilation efficiency of the fan unit 18 accompanying the damage of the surrounding wall of the circulation port 25 and the fall of the heat exchange efficiency in the evaporator 17 can be eliminated.

第２装着座４３のボス４５と締結座３８と補強体４８の３者をトラスねじ４９で共締め固定したので、締結座３８を第２装着座４３と補強体４８で確りと挟持できる。従って、ファンユニット１８を強固に循環口２５に装着でき、モーター３３の駆動に伴う振動によってびびり音が発生するのを防止できる。また、ファンユニット１８の駆動に伴う振動に起因する、ファンユニット１８の送風効率の低下を解消でき、熱交換後の空気を貯蔵室２内で適正に循環させることができる。 Since the boss 45, the fastening seat 38, and the reinforcing body 48 of the second mounting seat 43 are fastened and fixed together with the truss screws 49, the fastening seat 38 can be securely held between the second mounting seat 43 and the reinforcing body 48. Therefore, the fan unit 18 can be firmly attached to the circulation port 25, and chatter noise can be prevented from being generated due to vibration accompanying the driving of the motor 33. Moreover, the fall of the ventilation efficiency of the fan unit 18 resulting from the vibration accompanying the drive of the fan unit 18 can be eliminated, and the air after heat exchange can be appropriately circulated in the storage chamber 2.

補強体４８を金属板材で形成したので、トラスねじ４９による締結固定の際の補強体４８の変形を防止して、循環口２５にファンユニット１８と補強体４８をより強固に装着でき、循環口２５の周囲壁の剛性をさらに増強し構造強度を向上できる。また、補強体４８を外形形状および構造が同じ複数の補強枠体５０で構成したので、補強体４８をリング状の１個の部品で形成する場合に比べて、部品サイズを小型化し補強体４８の製造を容易化できる。また、部品サイズが小さい分、取り扱いが容易となり組付け作業を簡便化できる。外形形状および構造が同じ複数の補強枠体５０によれば、例えば補強枠体５０の外形形状が複数種ある場合に必要な組付け位置の確認作業を省くことができ、補強枠体５０の組付け作業のミスを一掃できる。さらに、雌ねじ部５１を各補強枠体５０と一体に形成したので、別途トラスねじ４９をねじ込むための部品を用意する必要がなく部品点数を削減できる。 Since the reinforcing body 48 is formed of a metal plate material, deformation of the reinforcing body 48 when fastening with the truss screw 49 is prevented, and the fan unit 18 and the reinforcing body 48 can be more firmly attached to the circulation port 25. The structural strength can be improved by further increasing the rigidity of the 25 surrounding walls. Further, since the reinforcing body 48 is composed of a plurality of reinforcing frame bodies 50 having the same external shape and structure, the size of the parts is reduced and the reinforcing body 48 is smaller than when the reinforcing body 48 is formed by a single ring-shaped part. Can be easily manufactured. In addition, since the component size is small, handling is facilitated, and assembly work can be simplified. According to the plurality of reinforcing frame bodies 50 having the same outer shape and structure, for example, it is possible to omit an assembling position confirmation operation required when there are a plurality of types of outer shape of the reinforcing frame body 50. Can eliminate mistakes in attaching work. Furthermore, since the female screw portion 51 is formed integrally with each reinforcing frame 50, it is not necessary to prepare a separate component for screwing the truss screw 49, and the number of components can be reduced.

取付座３９にあてがった補強枠体５０を、弾性係合爪５５で仮組み保持して位置決めしたので、補強枠体５０を弾性係合爪５５に係合させるだけで循環口２５にファンユニット１８および補強体４８を所定位置に仮固定できる。従って、循環口２５へのファンユニット１８および補強体４８の組付け作業を容易化できる。また、補強枠体５０の雌ねじ部５１にトラスねじ４９をねじ込む際に、補強枠体５０を手で保持する必要がなく、トラスねじ４９の締結作業を簡便化できる。さらに、ファンユニット１８は、弾性係合爪５５の係合状態を解除しない限り循環口２５から分離しないので、例えばトラスねじ４９に緩みが生じた場合でも、循環口２５に対するファンユニット１８の位置がずれることがない。従って、送風効率が低下することなくファンユニット１８による熱交換用の空気の送給を継続できる。 Since the reinforcing frame body 50 applied to the mounting seat 39 is temporarily held and positioned by the elastic engagement claws 55, the fan unit 18 is connected to the circulation port 25 only by engaging the reinforcement frame body 50 with the elastic engagement claws 55. In addition, the reinforcing body 48 can be temporarily fixed at a predetermined position. Therefore, the assembly work of the fan unit 18 and the reinforcing body 48 to the circulation port 25 can be facilitated. Further, when the truss screw 49 is screwed into the female thread portion 51 of the reinforcing frame body 50, it is not necessary to hold the reinforcing frame body 50 by hand, and the fastening operation of the truss screw 49 can be simplified. Further, since the fan unit 18 is not separated from the circulation port 25 unless the engagement state of the elastic engagement claw 55 is released, for example, even when the truss screw 49 is loosened, the position of the fan unit 18 with respect to the circulation port 25 is not changed. There is no deviation. Therefore, the supply of air for heat exchange by the fan unit 18 can be continued without lowering the blowing efficiency.

循環口２５の周囲を囲む補強筒壁４１の内面に第１装着座４２および第２装着座４３を形成したので、補強筒壁４１で循環口２５の周囲壁の剛性をさらに増強して構造強度を向上でき、ダクト体１５が破損するのを確実に防止できる。 Since the first mounting seat 42 and the second mounting seat 43 are formed on the inner surface of the reinforcing cylindrical wall 41 surrounding the circulation port 25, the reinforcing cylindrical wall 41 further enhances the rigidity of the peripheral wall of the circulating port 25 and has a structural strength. And the duct body 15 can be reliably prevented from being damaged.

補強体４８を締結固定するトラスねじ４９でダクト体１５にファンカバー６２を固定したので、ダクト体１５に対するファンユニット１８および補強体４８の組付け作業と同時にファンカバー６２を固定できる。従って、ダクト体１５に対する補強体４８、ファンユニット１８、ファンカバー６２の３者の組付け作業を簡便化できる。 Since the fan cover 62 is fixed to the duct body 15 with the truss screws 49 for fastening and fixing the reinforcing body 48, the fan cover 62 can be fixed simultaneously with the assembling work of the fan unit 18 and the reinforcing body 48 to the duct body 15. Accordingly, it is possible to simplify the assembly work of the reinforcing body 48, the fan unit 18, and the fan cover 62 with respect to the duct body 15.

センサーポケット６０に収容される温度センサー５９を、センサーポケット６０の開口面を塞ぐ補強体４８で固定したので、補強体４８を利用して温度センサー５９を固定して、温度センサー５９を別途固定するための手間を省くことができる。 Since the temperature sensor 59 accommodated in the sensor pocket 60 is fixed by the reinforcing body 48 that closes the opening surface of the sensor pocket 60, the temperature sensor 59 is fixed using the reinforcing body 48, and the temperature sensor 59 is separately fixed. Can be saved.

上記の実施例では、補強体４８を２個の補強枠体５０で構成したが、３個以上の補強枠体５０で構成してもよい。弾性係合爪５５は２個、あるいは４個以上設けることができる。例えば弾性係合爪５５が２個の場合には、弾性係合爪５５が補強枠体５０の対向周縁に係合して仮組み保持できるようにすればよい。また、補強枠体５０を位置決めする位置決めピンなどの構造を別途設けてもよい。本発明は、実施例で示した冷蔵ショーケース以外に、氷や加工食品などを冷凍保存する冷凍ショーケース、あるいは料理を保温する温蔵ショーケースなどにも適用することができる。 In the above embodiment, the reinforcing body 48 is constituted by the two reinforcing frame bodies 50, but may be constituted by three or more reinforcing frame bodies 50. Two or four or more elastic engagement claws 55 can be provided. For example, when there are two elastic engagement claws 55, the elastic engagement claws 55 may be engaged with the opposing peripheral edges of the reinforcing frame 50 so as to be temporarily assembled and held. Further, a structure such as a positioning pin for positioning the reinforcing frame 50 may be separately provided. In addition to the refrigerated showcase shown in the embodiments, the present invention can also be applied to a frozen showcase that freezes and stores ice and processed foods, or a warmed showcase that keeps dishes warm.

２貯蔵室
１５ダクト体
１６熱交換室
１７熱交換器（蒸発器）
１８ファンユニット
２５循環口
３２ファン本体
３３モーター
３４シュラウド
３５モーター支持枠
３８締結座
３９取付座
４０挿通孔
４１補強筒壁
４２第１装着座
４３第２装着座
４５ボス
４６挿通孔
４８補強体
４９ボルト（トラスねじ）
５０補強枠体
５１雌ねじ部
５５弾性係合爪
５９温度センサー
６０センサーポケット
６２ファンカバー 2 Storage room 15 Duct body 16 Heat exchange room 17 Heat exchanger (evaporator)
18 Fan unit 25 Circulation port 32 Fan body 33 Motor 34 Shroud 35 Motor support frame 38 Fastening seat 39 Mounting seat 40 Insertion hole 41 Reinforcing cylinder wall 42 First attachment seat 43 Second attachment seat 45 Boss 46 Insertion hole 48 Reinforcement body 49 Bolt (Truss screw)
50 Reinforcing frame 51 Female thread 55 Elastic engagement claw 59 Temperature sensor 60 Sensor pocket 62 Fan cover

Claims

A plastic duct body (15) is fixed to the inner wall surface of the storage chamber (2) to partition a heat exchange chamber (16). The heat exchange chamber (16) includes a heat exchanger (17) and a fan unit ( 18) is disposed, and a circulation port (25) is opened in the duct wall facing the fan unit (18),
The circulation port (25) is equipped with a fan unit (18) and a reinforcing body (48) for reinforcing the peripheral wall of the circulation port (25).
The fan unit (18) is provided with a mounting seat (39) and fastening seats (38) at a plurality of locations in the circumferential direction continuously to the mounting seat (39).
The circulation port (25) is provided with a first mounting seat (42) and a second mounting seat (43) for receiving the mounting seat (39) and the fastening seat (38) of the fan unit (18). And
The mounting seat (39) of the fan unit (18) is mounted on the first mounting seat (42), the fastening seat (38) is mounted on the second mounting seat (43), and the reinforcing body (48) is mounted on the mounting seat (39). The bolt (49) inserted through the peripheral wall of the circulation port (25) and the fastening seat (38) in a state where the mounting seat (39) is sandwiched between the first mounting seat (42) and the reinforcing body (48). And the reinforcing body (48) is fastened and fixed to the circulation port (25).

The fan unit (18) is integrated with the fan main body (32), the motor (33) that rotationally drives the fan main body (32), the shroud (34) that covers the periphery of the fan main body (32), and the shroud (34). Equipped with a motor support frame (35)
The fastening seat (38) is provided integrally with the motor support frame (35) and has a thickness dimension that is thicker than that of the mounting seat (39).
Insertion holes (46, 40) for inserting bolts (49) are formed in each of the boss (45) provided on the second mounting seat (43) and the fastening seat (38),
The bolt (49) is inserted into the insertion hole (46, 40) from the outer surface side of the duct body (15), and the boss (45), the fastening seat (38), and the reinforcing body (48) of the second mounting seat (43). The storage according to claim 1, wherein the three members are fixed together by bolts (49).

The reinforcing body (48) is made of a metal plate, and is composed of a plurality of reinforcing frame bodies (50) having the same outer shape and structure,
The storage according to claim 2, wherein the female screw part (51) into which the bolt (49) is screwed is formed integrally with each reinforcing frame (50).

Elastic engagement claws (55) for engaging and holding the reinforcing frame (50) are provided at a plurality of locations on the peripheral wall of the circulation port (25),
The storage according to claim 3, wherein the reinforcing frame (50) applied to the mounting seat (39) is temporarily held and positioned by the elastic engagement claws (55).

A reinforcing cylinder wall (41) having the same shape as the circulation port (25) is formed to surround the circulation port (25),
The storage according to any one of claims 1 to 4, wherein a first mounting seat (42) and a second mounting seat (43) are formed on an inner surface of the reinforcing cylindrical wall (41).

A fan cover (62) configured to allow ventilation is disposed on the outer surface side of the circulation port (25),
The storage according to any one of claims 1 to 5, wherein the fan cover (62) is fixed to the duct body (15) with a bolt (49) for fastening and fixing the reinforcing body (48).

A temperature sensor (59) for measuring the temperature of the air before heat exchange passing through the circulation port (25) is disposed on the peripheral wall of the circulation port (25),
The temperature sensor (59) is accommodated in a sensor pocket (60) formed in a peripheral wall of the circulation port (25) and fixed by a reinforcing body (48) that closes an opening surface of the sensor pocket (60). The storage according to any one of 1 to 6.