JP7117185B2 - Deodorizing structure of drainage - Google Patents

Deodorizing structure of drainage Download PDF

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JP7117185B2
JP7117185B2 JP2018139605A JP2018139605A JP7117185B2 JP 7117185 B2 JP7117185 B2 JP 7117185B2 JP 2018139605 A JP2018139605 A JP 2018139605A JP 2018139605 A JP2018139605 A JP 2018139605A JP 7117185 B2 JP7117185 B2 JP 7117185B2
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lid member
water
drainage
cylindrical portion
tubular portion
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JP2020016388A (en
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茂樹 石原
昭治 菊地
富雄 田中
滋樹 渡邉
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Toshiba Carrier Corp
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Toshiba Carrier Corp
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本発明の実施形態は、排水部の防臭構造に関する。 An embodiment of the present invention relates to a deodorant structure for a drainage section.

従来、冷蔵ショーケースでは、排水ホースの下流側から流れ込む臭気がドレン排出口を介して庫内に入らないようにするために、ドレン排出口を遮断する蓋体が設けられている。この蓋体は、発泡材などの浮力が大きくなる材料で形成されている。ドレンカップに一定量以上の水が溜まると、蓋体が浮力により上方に移動し、ドレン排出口が開放されて排水が行えるようにしている。 2. Description of the Related Art Conventionally, a refrigeration showcase is provided with a lid that blocks a drain outlet in order to prevent odor flowing from the downstream side of a drain hose from entering the refrigerator through the drain outlet. The lid is made of a material such as foam that increases buoyancy. When a certain amount or more of water accumulates in the drain cup, the lid moves upward due to buoyancy, and the drain outlet is opened so that the drain can be drained.

特開2006-183992号公報JP-A-2006-183992

前述の技術では、蓋体がドレン排出口を遮断しているときに、蓋体の下面とドレン排出口の上端部との間に存在する水により生じる表面張力によって、蓋体の下面がドレン排出口の上端部に貼り付いてしまう。そのため、蓋体に浮力が与えられても上方に移動されずに、排水が行えなくなるという課題がある。 In the above-described technology, when the lid blocks the drain outlet, surface tension caused by water existing between the lower surface of the lid and the upper end of the drain outlet causes the lower surface of the lid to be drained. It sticks to the top edge of the exit. Therefore, there is a problem that even if buoyancy is applied to the lid, the lid does not move upward, making it impossible to drain water.

本発明の実施形態は、このような事情を考慮してなされたもので、蓋部材が筒部の上端部に貼り付いてしまうことを防止することができる排水部の防臭構造を提供することを目的とする。 The embodiments of the present invention have been made in consideration of such circumstances, and it is an object of the present invention to provide a deodorant structure for a drainage section that can prevent the cover member from sticking to the upper end of the cylindrical section. aim.

本発明の実施形態に係る排水部の防臭構造は、流れ込んだ水を受けるカップ状を成す水受部と、前記水を外部に排水する排水パイプと連通され、前記水受部の底面の中央から上方に突出される筒状を成す筒部と、前記水受部に溜まった前記水により生じる浮力で浮く比重を有し、前記筒部の上端部の開口を閉塞し、前記浮力が生じたときに上方に移動する蓋部材と、前記蓋部材の下面または前記筒部の上端面から突出し、前記蓋部材の下面側と前記筒部の上端部とを点接触または線接触させる突起部と、を備える。 The deodorant structure of the drainage part according to the embodiment of the present invention includes a cup-shaped water receiving part that receives water that has flowed in, and a drainage pipe that drains the water to the outside. It has a cylindrical portion that protrudes upward and has a specific gravity that floats due to the buoyancy generated by the water accumulated in the water receiving portion, and when the opening at the upper end of the cylindrical portion is closed and the buoyancy is generated. and a projecting portion that projects from the lower surface of the lid member or the upper end surface of the cylindrical portion and makes point contact or line contact between the lower surface side of the lid member and the upper end portion of the cylindrical portion. Prepare.

オープンショーケースを示す斜視図。The perspective view which shows an open showcase. オープンショーケースを示す側断面図。FIG. 2 is a side cross-sectional view showing an open showcase; 第1実施形態の排水部を示す斜視図。The perspective view which shows the drainage part of 1st Embodiment. フィルタ部材と蓋部材と水受部を示す側断面図。FIG. 4 is a side cross-sectional view showing a filter member, a lid member, and a water receiving portion; 蓋部材により筒部が閉塞された状態の排水部を示す側断面図。FIG. 4 is a side cross-sectional view showing the drainage part in a state where the cylindrical part is closed by the cover member; 蓋部材が浮いて筒部が開放された状態の排水部を示す側断面図。FIG. 4 is a side cross-sectional view showing the drainage part in a state where the lid member is lifted and the cylindrical part is opened; 筒部を示す平面図。The top view which shows a cylinder part. 変形例1の筒部を示す平面図。The top view which shows the cylinder part of the modification 1. FIG. 突起部を示す断面図。Sectional drawing which shows a projection part. 変形例2の突起部を示す断面図。FIG. 11 is a cross-sectional view showing a protrusion of Modification 2; 第2実施形態の蓋部材を示す斜視図。The perspective view which shows the cover member of 2nd Embodiment. 第3実施形態の蓋部材を示す斜視図。The perspective view which shows the cover member of 3rd Embodiment. 第4実施形態の蓋部材を示す底面図。The bottom view which shows the cover member of 4th Embodiment. 第5実施形態の蓋部材を示す底面図。The bottom view which shows the cover member of 5th Embodiment. 第6実施形態の蓋部材および筒部を示す側断面図。FIG. 11 is a side cross-sectional view showing a lid member and a tubular portion of a sixth embodiment; 第7実施形態の蓋部材および筒部を示す側断面図。FIG. 11 is a side cross-sectional view showing a cover member and a cylindrical portion of a seventh embodiment; 第8実施形態の蓋部材および筒部を示す側断面図。FIG. 11 is a side cross-sectional view showing a lid member and a cylindrical portion of an eighth embodiment;

(第1実施形態)
以下、本実施形態を添付図面に基づいて説明する。まず、第1実施形態の排水部の防臭構造について図1から図10を用いて説明する。以下、図2の紙面左側をオープンショーケースの正面側(前方側)として説明する。図1の符号1は、本実施形態の排水部の防臭構造が適用されたオープンショーケースである。このオープンショーケース1は、主に食料品などを販売する店舗に設置され、ペットボトル飲料、缶飲料、冷蔵食品などの商品(被陳列物)を陳列するために用いられる。このオープンショーケース1は、冷凍サイクルを構成する機器を備え、商品を冷蔵した状態で陳列することができる。
(First embodiment)
The present embodiment will be described below with reference to the accompanying drawings. First, the deodorant structure of the drain section of the first embodiment will be described with reference to FIGS. 1 to 10. FIG. Hereinafter, the left side of the paper surface of FIG. 2 will be described as the front side (front side) of the open showcase. Reference numeral 1 in FIG. 1 denotes an open showcase to which the deodorizing structure of the drainage part of the present embodiment is applied. This open showcase 1 is installed in a store that mainly sells foodstuffs and the like, and is used to display products (items to be displayed) such as PET bottled beverages, canned beverages, and refrigerated foods. The open showcase 1 is equipped with equipment that constitutes a refrigeration cycle, and can display commodities in a refrigerated state.

図1に示すように、本実施形態のオープンショーケース1は、正面視および側面視で四角形状を成す箱状の什器である。このオープンショーケース1は、その前面側が開口されている。この前面の開口から商品が出し入れ自在に陳列される陳列室2が設けられている。陳列室2の上部には、天井部3が設けられ、陳列室2の下部には、機器が収容される基台部4が設けられている。 As shown in FIG. 1, the open showcase 1 of the present embodiment is a box-like fixture having a square shape when viewed from the front and from the side. The open showcase 1 is open on the front side. A display room 2 is provided in which commodities are freely put in and taken out from the front opening. A ceiling part 3 is provided in the upper part of the display room 2, and a base part 4 in which devices are accommodated is provided in the lower part of the display room 2. - 特許庁

陳列室2の左右両側面には、ガラス板5が設けられている。このガラス板5は、断熱性を有する複層ガラスから成る。なお、陳列室2の左右両側面のうち、いずれか一方にガラス板5を設けるとともに、他方に側板を設けるようにしても良い。 Glass plates 5 are provided on both left and right sides of the display room 2 . The glass plate 5 is made of double-glazed glass having thermal insulation properties. Incidentally, the glass plate 5 may be provided on one of the left and right side surfaces of the display room 2, and the side plate may be provided on the other side.

図2に示すように、オープンショーケース1は、側断面視で正面が開口されたコ字形状を成す。陳列室2は、天井板6と底面棚板7と後面板8とで囲まれた空間である。この陳列室には、上下方向に並んだ複数段の陳列棚9(棚板)が設けられている。各陳列棚9は、後面板8に着脱自在に取り付けられる。これら陳列棚9および底面棚板7の上面に複数の商品10が載置される。これら陳列棚9および底面棚板7の上面のそれぞれが、商品10を陳列する陳列部11~15となっている。 As shown in FIG. 2, the open showcase 1 has a U-shape with an open front when viewed from the side. The display room 2 is a space surrounded by a ceiling plate 6 , a bottom shelf plate 7 and a rear plate 8 . This display room is provided with a plurality of display shelves 9 (shelf boards) aligned in the vertical direction. Each display shelf 9 is detachably attached to the rear plate 8 . A plurality of products 10 are placed on the upper surfaces of the display shelf 9 and the bottom shelf board 7 . The upper surfaces of the display shelf 9 and the bottom shelf plate 7 serve as display sections 11 to 15 for displaying the products 10, respectively.

陳列室2の開口の下縁辺近傍であり、かつ底面棚板7の前方位置には、陳列室2の冷気K(空気)を吸い込む吸込部16が設けられている。この吸込部16は、複数のスリット孔が設けられた蓋材17で閉塞されている。また、陳列室2の開口の上縁辺近傍であり、かつ天井板6の前方位置には、陳列室2に向けて冷気Kを吹き出す吹出部18が設けられている。この吹出部18は、下方に向かって開口されている。そして、吹出部18から下方に吹き出された冷気Kによって陳列室2の内部の温度が下げられる。 In the vicinity of the lower edge of the opening of the display room 2 and in front of the bottom shelf plate 7, a suction part 16 for sucking the cold air K (air) from the display room 2 is provided. The suction portion 16 is closed with a lid member 17 provided with a plurality of slit holes. A blowout section 18 for blowing cool air K toward the display room 2 is provided near the upper edge of the opening of the display room 2 and in front of the ceiling plate 6 . The blowout part 18 is opened downward. Then, the temperature inside the display room 2 is lowered by the cold air K blown downward from the blowing part 18 .

オープンショーケース1の内部には、天井板6と底面棚板7と後面板8とをさらに囲むように、側面視でコ字形状を成す断熱部19が設けられている。この断熱部19は、天井板6と底面棚板7と後面板8とのそれぞれから所定の空間を空けて配置されている。そして、吸込部16から吹出部18に掛けて冷気Kを循環させる冷気循環ダクト20が形成される。 Inside the open showcase 1, a heat insulating portion 19 having a U-shape in side view is provided so as to further surround the ceiling plate 6, the bottom shelf plate 7, and the rear plate 8. As shown in FIG. The heat insulating part 19 is arranged with a predetermined space from each of the ceiling plate 6 , the bottom shelf plate 7 and the rear plate 8 . A cold air circulation duct 20 for circulating the cold air K from the suction part 16 to the blowing part 18 is formed.

冷気循環ダクト20の内部であり、かつ底面棚板7の下方位置には、陳列室2から吸い込まれた冷気Kを送るための冷気循環用送風機21が設けられる。さらに、冷気循環ダクト20の内部であり、かつ後面板8の後方位置には、冷気Kから熱を奪って温度を下げるための熱交換器としての蒸発器22が設けられている。 Inside the cool air circulation duct 20 and below the bottom shelf plate 7, a cool air circulation blower 21 for sending the cool air K sucked from the display room 2 is provided. Further, inside the cold air circulation duct 20 and behind the rear plate 8, an evaporator 22 is provided as a heat exchanger for removing heat from the cold air K to lower the temperature.

冷気循環用送風機21が駆動されることで、吸込部16から陳列室2の冷気Kが冷気循環ダクト20の内部に吸い込まれる。そして、この冷気Kが、底面棚板7の下方位置を通って後方に向かって送られ、後面板8の後方側を上昇する。このときに、蒸発器22により冷気Kが冷却される。さらに、この冷気Kが、天井板6の上方位置を通って前方に向かって送られ、吹出部18から吹き出される。 By driving the cool air circulation blower 21 , the cool air K in the display room 2 is sucked into the cool air circulation duct 20 from the suction unit 16 . Then, this cold air K is sent rearward through the lower position of the bottom shelf plate 7 and rises on the rear side of the rear plate 8 . At this time, the cool air K is cooled by the evaporator 22 . Furthermore, this cold air K is sent forward through the upper position of the ceiling plate 6 and blown out from the blowing part 18 .

吹出部18から吹き出された冷気Kによって陳列室2の商品10が冷やされ、この冷気Kが再び吸込部16から冷気循環ダクト20に吸い込まれる。このように、陳列室2の冷気循環ダクト20との間で冷気Kが循環される。 The cold air K blown out from the blowing part 18 cools the commodities 10 in the display room 2 , and the cold air K is again sucked into the cold air circulation duct 20 from the suction part 16 . In this manner, the cold air K is circulated between the display room 2 and the cold air circulation duct 20 .

基台部4の内部には、冷媒を圧縮する圧縮機23と、冷媒を凝縮する熱交換器としての凝縮器24と、この凝縮器24に対向して配置される放熱用送風機25とが収容される。蒸発器22と圧縮機23と凝縮器24とが冷媒を循環させる冷媒配管を介して互いに接続されている。そして、蒸発器22と凝縮器24との間で冷媒を循環させることで冷凍サイクルが構成される。なお、基台部4の前面側には、空気が流通可能な流通部26が設けられ、この流通された空気により凝縮器24の放熱が行えるようになっている。 A compressor 23 for compressing the refrigerant, a condenser 24 as a heat exchanger for condensing the refrigerant, and a heat radiation blower 25 arranged facing the condenser 24 are housed inside the base portion 4 . be done. The evaporator 22, the compressor 23, and the condenser 24 are connected to each other through refrigerant pipes for circulating the refrigerant. A refrigeration cycle is configured by circulating the refrigerant between the evaporator 22 and the condenser 24 . A circulating portion 26 through which air can circulate is provided on the front side of the base portion 4 so that the heat of the condenser 24 can be dissipated by the circulated air.

天井部3の吹出部18の前方位置には、庇部27が設けられる。この庇部27には、照明部28が設けられ、この照明部28により商品10を照らすことができるようになっている。また、庇部27は商品情報等を表示する表示部としての機能、または照明部28からの光を透過するシェードとしての機能等を有している。 A canopy portion 27 is provided in front of the blowout portion 18 of the ceiling portion 3 . A lighting section 28 is provided on the canopy section 27 so that the product 10 can be illuminated by the lighting section 28 . Further, the canopy portion 27 has a function as a display portion for displaying product information or the like, or a function as a shade for transmitting light from the lighting portion 28, or the like.

底面棚板7の下方位置にある断熱部19の底面29は、蒸発器22の直下の位置から前方に向かって下がるように傾斜されている。そして、この底面棚板7の前側には、蒸発器22から滴り落ちるドレン水を排水する排水部30が設けられている。排水部30には、オープンショーケース1の外部まで延びる排水パイプ31が接続されている。蒸発器22の表面で結露により生じたドレン水は、断熱部19の底面29を流れ落ちて、排水部30からオープンショーケース1の外部に排水される。 A bottom surface 29 of the heat insulating portion 19 located below the bottom shelf plate 7 is inclined forward from a position immediately below the evaporator 22 . A drain part 30 for draining drain water dripping from the evaporator 22 is provided on the front side of the bottom shelf plate 7 . A drainage pipe 31 extending to the outside of the open showcase 1 is connected to the drainage portion 30 . Drain water produced by condensation on the surface of the evaporator 22 flows down the bottom surface 29 of the heat insulation section 19 and is discharged to the outside of the open showcase 1 through the drainage section 30 .

底面棚板7および蓋材17は、着脱可能になっている。オープンショーケース1のメンテナンスを行うときには、底面棚板7および蓋材17を取り外すことで、排水部30にアクセスすることができる。そして、この排水部30に詰まったゴミなどの異物を除去することができる。 The bottom shelf plate 7 and the lid member 17 are detachable. When performing maintenance on the open showcase 1 , the drainage section 30 can be accessed by removing the bottom shelf plate 7 and the cover member 17 . Foreign matter such as dust clogged in the drainage section 30 can be removed.

次に、第1実施形態の排水部について詳述する。図3および図4に示すように、排水部30は、断熱部19の底面29の最低部に設けられている。なお、断熱部19の底面29は、水が流れ易い板金で覆われている。蒸発器22から滴り落ちたドレン水は、断熱部19の底面29の傾斜に沿って流れ、その最低部に設けられた排水部30に流れ込む。 Next, the drainage part of the first embodiment will be described in detail. As shown in FIGS. 3 and 4 , the drainage section 30 is provided at the lowest portion of the bottom surface 29 of the heat insulation section 19 . In addition, the bottom surface 29 of the heat insulating portion 19 is covered with a sheet metal through which water flows easily. Drain water dripping from the evaporator 22 flows along the slope of the bottom surface 29 of the heat insulation section 19 and flows into the drainage section 30 provided at the lowest part thereof.

排水部30は、ドレン水を受けるカップ状を成す水受部32と、水受部32の底面の中央から上方に突出される筒状を成す筒部33と、筒部33の上端部の開口を閉塞する蓋部材34と、水受部32の上端部の開口を覆うフィルタ部材35とを備える。 The drainage unit 30 includes a cup-shaped water receiving portion 32 for receiving drain water, a cylindrical portion 33 projecting upward from the center of the bottom surface of the water receiving portion 32, and an opening at the upper end of the cylindrical portion 33. and a filter member 35 that covers the opening at the upper end of the water receiving portion 32 .

水受部32および筒部33は、硬質塩化ビニールなどの合成樹脂の材質で形成され、それぞれ平面視で円形状を成す。なお、筒部33の直径は、水受部32の直径よりも小さくなっている。そして、水受部32と筒部33とが、同心円状を成すように配置される。 The water receiving portion 32 and the cylindrical portion 33 are made of a synthetic resin material such as rigid vinyl chloride, and each have a circular shape in a plan view. Note that the diameter of the tubular portion 33 is smaller than the diameter of the water receiving portion 32 . The water receiving portion 32 and the cylindrical portion 33 are arranged so as to form a concentric circle.

水受部32の上端部の高さ位置は、断熱部19の底面29の高さ位置と一致している。筒部33の上端部の位置は、断熱部19の底面29の高さ位置よりも低く、かつ水受部32の底面よりも高い位置に設けられる。水受部32にドレン水Wが流れ込むと、水受部32の底面には、所定量の水が溜まるようになる(図6参照)。つまり、水受部32の内周面と筒部33の外周面との間の領域に水が溜まる。 The height position of the upper end portion of the water receiving portion 32 matches the height position of the bottom surface 29 of the heat insulating portion 19 . The position of the upper end portion of the cylindrical portion 33 is provided at a position lower than the height position of the bottom surface 29 of the heat insulating portion 19 and higher than the bottom surface of the water receiving portion 32 . When the drain water W flows into the water receiving portion 32, a predetermined amount of water accumulates on the bottom surface of the water receiving portion 32 (see FIG. 6). That is, water accumulates in the area between the inner peripheral surface of the water receiving portion 32 and the outer peripheral surface of the tubular portion 33 .

筒部33の下部は、断熱部19を貫通して水受部32の下方に延びる。そして、この筒部33の下部には、90°の角度で屈曲されたエルボ管36が連結される。このエルボ管36介して、筒部33の下部が排水パイプ31と接続されている。筒部33の上端部の開口から流れ込んだドレン水Wは、排水パイプ31を介してオープンショーケース1の外部に排水される。 A lower portion of the cylindrical portion 33 extends below the water receiving portion 32 through the heat insulating portion 19 . An elbow pipe 36 bent at an angle of 90° is connected to the lower portion of the tubular portion 33 . A lower portion of the tubular portion 33 is connected to the drain pipe 31 through the elbow pipe 36 . The drain water W that has flowed through the opening at the upper end of the cylindrical portion 33 is drained to the outside of the open showcase 1 through the drain pipe 31 .

水受部32の底面から突出される筒部33の上部は、所定寸法の肉厚を有する円筒形状を成す部分となっている。この筒部33の上端部に蓋部材34が載置される上端面37が形成される。 The upper portion of the cylindrical portion 33 protruding from the bottom surface of the water receiving portion 32 is a cylindrical portion having a predetermined thickness. An upper end surface 37 on which the lid member 34 is placed is formed on the upper end portion of the tubular portion 33 .

第1実施形態の蓋部材34は、円盤状を成す部材であり、平面視で正十二角形を成す。蓋部材34の直径は、水受部32の直径よりも小さく、かつ筒部33の直径よりも大きくなっている。図5に示すように、蓋部材34が筒部33の上端部に載置されると、筒部33の開口が閉塞され、排水パイプ31の下流側から流れ込む臭気がオープンショーケース1の庫内に流れ込まないようになっている。 The lid member 34 of the first embodiment is a disk-shaped member, and forms a regular dodecagon in plan view. The diameter of the lid member 34 is smaller than the diameter of the water receiving portion 32 and larger than the diameter of the tubular portion 33 . As shown in FIG. 5 , when the lid member 34 is placed on the upper end of the cylindrical portion 33 , the opening of the cylindrical portion 33 is closed, and the odor flowing from the downstream side of the drain pipe 31 is prevented from entering the open showcase 1 . so that it does not flow into the

封水トラップなどの水を用いた閉塞手段を設けずに、蓋部材34により筒部33の開口が閉塞されるので、冬期などの冷蔵運転を行わない温蔵運転の期間であっても、筒部33の開口の閉塞状態を維持することができる。また、エアカットバルブなどの機械的な機構を設けないで済むので、製造コストを低減することができるばかりか、メンテナンスを容易に行うことができる。 Since the opening of the tubular portion 33 is closed by the lid member 34 without providing a closing means using water such as a water sealing trap, the tubular portion 33 can be kept warm even during a warm storage operation period such as winter when the refrigeration operation is not performed. The closed state of the opening of the portion 33 can be maintained. Moreover, since there is no need to provide a mechanical mechanism such as an air cut valve, not only can manufacturing costs be reduced, but maintenance can be easily performed.

蓋部材34の縁辺には、下方に突出される突出縁部38が形成されている。つまり、蓋部材34は、断面視でコ字形状を成す。蓋部材34の突出縁部38は、蓋部材34が筒部33の上端部に載置された状態で、水平方向にずれたときに、筒部33の上端部に掛止される。このようにすれば、蓋部材34の縁辺の突出縁部38が筒部33の上端部に引っ掛かるので、蓋部材34が筒部33の開口から外れないようになり、閉塞状態を維持することができる。 A protruding edge portion 38 protruding downward is formed on the edge of the lid member 34 . That is, the lid member 34 has a U-shape in a cross-sectional view. The protruding edge portion 38 of the lid member 34 is engaged with the upper end portion of the tubular portion 33 when the lid member 34 is placed on the upper end portion of the tubular portion 33 and is displaced in the horizontal direction. In this way, the protruding edge 38 on the edge of the lid member 34 is caught on the upper end of the cylindrical portion 33, so that the lid member 34 does not come off the opening of the cylindrical portion 33, and the closed state can be maintained. can.

蓋部材34は、水よりも比重が軽い発泡スチロールなどの材質で形成される。つまり、蓋部材34は、水受部32に溜まった水Wにより生じる浮力で浮く比重を有する。蓋部材34の材質を発泡スチロールにすることで、蓋部材34に浮力を持たせるための機械的構造を追加する必要がない。そのため、蓋部材34の構造を簡素化することができ、製造を容易に行うことができる。 The lid member 34 is made of a material such as expanded polystyrene having a specific gravity lighter than that of water. In other words, the lid member 34 has a specific gravity that floats due to the buoyancy generated by the water W accumulated in the water receiving portion 32 . By using foamed polystyrene as the material of the lid member 34, there is no need to add a mechanical structure for imparting buoyancy to the lid member 34. - 特許庁Therefore, the structure of the lid member 34 can be simplified, and manufacturing can be easily performed.

なお、蓋部材34は、発泡スチロールで形成されていなくても良い。例えば、蓋部材34を合成樹脂で形成し、その内部を中空にすることで、水受部32に溜まった水Wにより生じる浮力を生じさせても良い。 Note that the lid member 34 does not have to be made of foamed polystyrene. For example, the lid member 34 may be made of a synthetic resin and the interior thereof may be hollow to generate buoyancy caused by the water W accumulated in the water receiving portion 32 .

図6に示すように、水受部32にドレン水Wが流れ込み、水面Sが筒部33の上端部を超える高さになると、蓋部材34に浮力が生じ、蓋部材34が上方に移動される。このとき、蓋部材34と筒部33の上端部との間に生じる隙間から水Wが筒部33の開口に流れ込む。水Wが排水されて、水面Sが筒部33の上端部よりも低くなると、蓋部材34が下方に移動され、再び筒部33の開口が閉塞される。 As shown in FIG. 6, when drain water W flows into the water receiving portion 32 and the water surface S reaches a height exceeding the upper end portion of the cylindrical portion 33, buoyancy is generated in the lid member 34, and the lid member 34 is moved upward. be. At this time, the water W flows into the opening of the tubular portion 33 through a gap formed between the lid member 34 and the upper end portion of the tubular portion 33 . When the water W is drained and the water surface S becomes lower than the upper end of the cylindrical portion 33, the lid member 34 is moved downward to close the opening of the cylindrical portion 33 again.

図3および図4に示すように、フィルタ部材35は、ステンレスなどの金属材で形成される。このフィルタ部材35は、水受部32の開口を覆うように、平面視で円形状を成す。フィルタ部材35の周縁には、周方向に並び、上方に突出される複数の突出片39が設けられている。これらの突出片39の外周側には、径方向に突出される掛止片40が設けられる。これらの掛止片40が、水受部32の開口の縁部に掛止されることで、フィルタ部材35が所定の高さ位置に保持される。 As shown in FIGS. 3 and 4, the filter member 35 is made of a metal material such as stainless steel. The filter member 35 has a circular shape in plan view so as to cover the opening of the water receiving portion 32 . A plurality of projecting pieces 39 that are aligned in the circumferential direction and project upward are provided on the peripheral edge of the filter member 35 . A locking piece 40 projecting radially is provided on the outer peripheral side of these projecting pieces 39 . These hooking pieces 40 are hooked to the edge of the opening of the water receiving portion 32 to hold the filter member 35 at a predetermined height position.

また、フィルタ部材35には、複数の孔部41が形成されている。これらの孔部41がフィルタ部材35に形成されていることで、ドレン水Wが通過可能な状態で、ゴミなどの異物を捕獲することができる。 A plurality of holes 41 are formed in the filter member 35 . By forming these holes 41 in the filter member 35, it is possible to capture foreign matter such as dust while allowing the drain water W to pass through.

なお、掛止片40は、突出片39の上下方向の中央部から突出される。そのため、フィルタ部材35の下面42の位置は、水受部32の上端部よりも低い位置に維持される。また、断熱部19の底面29が傾斜され、その最低部に水受部32の開口が設けられているので、水受部32の開口の縁辺の高さが均一になっていない。この場合でも、フィルタ部材35の下面42の位置が、水受部32の上端部よりも低くなるように、掛止片40の位置が設定されている。 The hooking piece 40 protrudes from the central portion of the protruding piece 39 in the vertical direction. Therefore, the position of the lower surface 42 of the filter member 35 is maintained at a position lower than the upper end portion of the water receiving portion 32 . In addition, since the bottom surface 29 of the heat insulating portion 19 is inclined and the opening of the water receiving portion 32 is provided at the lowest portion thereof, the height of the edge of the opening of the water receiving portion 32 is not uniform. Even in this case, the position of the hooking piece 40 is set so that the position of the lower surface 42 of the filter member 35 is lower than the upper end portion of the water receiving portion 32 .

図5に示すように、蓋部材34が筒部33の開口を閉塞した状態において、フィルタ部材35の下面42から蓋部材34の上面43までの離間寸法L1よりも、蓋部材34の下面44から突出縁部38の下端までの突出寸法L2の方が、大きくなっている。そのため、蓋部材34の上面43がフィルタ部材35の下面42に接触される位置まで、蓋部材34が浮上されても、突出縁部38の下端が筒部33の上端部よりも高くなることがない。そのため、蓋部材34が水平方向にずれたときに、突出縁部38を筒部33の上端部に掛止させることができる。 As shown in FIG. 5 , when the lid member 34 closes the opening of the cylindrical portion 33 , the distance from the bottom surface 44 of the lid member 34 is greater than the distance L1 from the bottom surface 42 of the filter member 35 to the top surface 43 of the lid member 34 . The projection dimension L2 to the lower end of the projecting edge portion 38 is larger. Therefore, even if the cover member 34 is floated to the position where the upper surface 43 of the cover member 34 contacts the lower surface 42 of the filter member 35 , the lower end of the projecting edge portion 38 may be higher than the upper end portion of the cylindrical portion 33 . do not have. Therefore, when the lid member 34 is displaced in the horizontal direction, the projecting edge portion 38 can be hooked to the upper end portion of the tubular portion 33 .

第1実施形態の筒部33の上端面37には、この上端面37から上方に突出される特定部としての突起部45が設けられている。図7に示すように、突起部45は、筒部33の径方向に直線状に延びる凸条となっている。第1実施形態では、4本の突起部45が筒部33の上端面37の周方向に等間隔に並んで設けられる。 The upper end surface 37 of the cylindrical portion 33 of the first embodiment is provided with a protrusion 45 as a specific portion that protrudes upward from the upper end surface 37 . As shown in FIG. 7 , the projecting portion 45 is a ridge linearly extending in the radial direction of the cylindrical portion 33 . In the first embodiment, four protruding portions 45 are arranged at regular intervals in the circumferential direction of the upper end surface 37 of the tubular portion 33 .

図9に示すように、突起部45の先端形状は、断面視で半円形状を成す。そして、突起部45の先端が、蓋部材34の下面44に線接触される。突起部45が設けられることで、蓋部材34が筒部33の開口を閉塞した状態で、蓋部材34の下面44と筒部33の上端面37との間に間隙Gが形成される。つまり、蓋部材34の下面44と筒部33の上端面37との接触面積を小さくすることができる。そのため、蓋部材34が筒部33の上端面37に貼り付くことがなく、蓋部材34に浮力が生じたときに、蓋部材34をスムーズに上方に移動させることができる。 As shown in FIG. 9, the tip shape of the protrusion 45 has a semicircular shape in a cross-sectional view. The tip of the protrusion 45 is in line contact with the lower surface 44 of the lid member 34 . A gap G is formed between the lower surface 44 of the lid member 34 and the upper end surface 37 of the tubular portion 33 when the lid member 34 closes the opening of the tubular portion 33 by providing the projecting portion 45 . That is, the contact area between the lower surface 44 of the lid member 34 and the upper end surface 37 of the cylindrical portion 33 can be reduced. Therefore, the lid member 34 does not stick to the upper end surface 37 of the cylindrical portion 33, and the lid member 34 can be smoothly moved upward when the lid member 34 is buoyant.

ここで、突起部45の断面半円形状の円弧直径Rに対して、少なくともR/2<Gに形成されている。また、間隙Gは1.5~3.0mmに構成されている。また、L2>3Gに構成されている。このように構成することにより、バイオフィルムの生成にともなう蓋部材34と筒部33とが固着することを良好に抑制することができる。また、排水パイプ31側からの臭気が庫内側へ流出するのを良好に防止することができる。 Here, the arc diameter R of the projection 45 having a semicircular cross section is formed so as to satisfy at least R/2<G. Also, the gap G is configured to be 1.5 to 3.0 mm. Moreover, it is configured to satisfy L2>3G. By configuring in this way, it is possible to satisfactorily suppress the adhesion between the lid member 34 and the cylindrical portion 33 that accompanies the formation of biofilms. In addition, it is possible to effectively prevent odor from flowing out from the drain pipe 31 side to the inside of the refrigerator.

なお、突起部45は、その他の態様であっても良い。例えば、図8に示す変形例1の筒部33Aでは、特定部としての突起部45Aが、筒部33Aの上端面37に設けられた小さな円形の凸部となっている。変形例1では、3個の突起部45Aが筒部33Aの上端面37の周方向に等間隔に並んで設けられる。そして、突起部45Aの先端が、蓋部材34の下面44に点接触される。 It should be noted that the protrusion 45 may be in another form. For example, in a cylindrical portion 33A of Modified Example 1 shown in FIG. 8, a protrusion 45A as a specific portion is a small circular protrusion provided on the upper end surface 37 of the cylindrical portion 33A. In Modification 1, three protruding portions 45A are arranged at regular intervals in the circumferential direction of the upper end surface 37 of the tubular portion 33A. Then, the tip of the protrusion 45A makes point contact with the lower surface 44 of the lid member 34 .

また、図10に示す変形例2の特定部としての突起部45Bでは、その先端形状が断面視で三角形状を成す。この突起部45Bが筒部33Bの径方向に直線状に延びる凸条である場合は、その先端が蓋部材34の下面44に線接触される。一方、この突起部45Bが筒部33Bの上端面37に設けられた小さな円形の凸部である場合は、その先端が蓋部材34の下面44に点接触される。 Moreover, in the protrusion 45B as the specific portion of Modification 2 shown in FIG. 10, the shape of the tip thereof forms a triangular shape in a cross-sectional view. When the projecting portion 45B is a projection linearly extending in the radial direction of the cylindrical portion 33B, the tip of the projecting portion 45B is in line contact with the lower surface 44 of the lid member 34 . On the other hand, when the projecting portion 45B is a small circular projection provided on the upper end surface 37 of the cylindrical portion 33B, the tip thereof makes point contact with the lower surface 44 of the lid member 34 .

(第2実施形態)
次に、第2実施形態の排水部の防臭構造について図11を用いて説明する。なお、前述した実施形態に示される構成部分と同一構成部分については同一符号を付して重複する説明を省略する。
(Second embodiment)
Next, the deodorant structure of the drainage part of the second embodiment will be described with reference to FIG. 11 . The same reference numerals are assigned to the same components as those shown in the above-described embodiment, and overlapping descriptions are omitted.

図11に示すように、第2実施形態の蓋部材34Aは、円盤状を成す部材であり、平面視で円形状を成す。蓋部材34Aの縁辺には、下方に突出される突出縁部38が形成されている。つまり、蓋部材34Aは、断面視でコ字形状を成す。さらに、突出縁部38の一部から下方に突出される凸片46が形成されている。 As shown in FIG. 11, the lid member 34A of the second embodiment is a disc-shaped member and has a circular shape in plan view. A protruding edge portion 38 protruding downward is formed on the edge of the lid member 34A. In other words, the lid member 34A has a U-shape when viewed in cross section. Further, a projecting piece 46 projecting downward from a portion of the projecting edge portion 38 is formed.

第2実施形態では、4つの凸片46が蓋部材34Aの周方向に等間隔に並んで設けられる。このようにすれば、蓋部材34Aが傾いたり、ぐらついたりしても、凸片46が筒部の上端部に引っ掛かるので、蓋部材34Aが筒部33の開口からずれないようになり、閉塞状態を維持することができる。 In the second embodiment, four protruding pieces 46 are arranged at equal intervals in the circumferential direction of the lid member 34A. In this way, even if the lid member 34A tilts or wobbles, the convex piece 46 is caught on the upper end of the cylindrical portion, so that the lid member 34A does not shift from the opening of the cylindrical portion 33, and the closed state is achieved. can be maintained.

(第3実施形態)
次に、第3実施形態の排水部の防臭構造について図12を用いて説明する。なお、前述した実施形態に示される構成部分と同一構成部分については同一符号を付して重複する説明を省略する。
(Third embodiment)
Next, the deodorizing structure of the drain section of the third embodiment will be described with reference to FIG. 12 . The same reference numerals are assigned to the same components as those shown in the above-described embodiment, and overlapping descriptions are omitted.

図12に示すように、第3実施形態の蓋部材34Bは、円盤状を成す部材であり、平面視で円形状を成す。蓋部材34Bの縁辺には、その一部から下方に突出される凸片46が形成されている。第3実施形態では、4つの凸片46が蓋部材34Bの周方向に等間隔に並んで設けられる。 As shown in FIG. 12, the lid member 34B of the third embodiment is a disc-shaped member and has a circular shape in plan view. A projecting piece 46 projecting downward from a part of the edge of the lid member 34B is formed. In the third embodiment, four projecting pieces 46 are arranged at equal intervals in the circumferential direction of the lid member 34B.

この第3実施形態では、第2実施形態の突出縁部38が形成されていない。蓋部材34Bの全周に亘って突出縁部38を設けると、浮力が強すぎて、蓋部材34Bが浮きすぎる場合がある。そこで、第3実施形態では、凸片46を設けることで、浮力を発生させる部分を小さくし、蓋部材34Bが浮きすぎることを防止している。 In this third embodiment, the protruding edge 38 of the second embodiment is not formed. If the protruding edge portion 38 is provided over the entire circumference of the lid member 34B, the buoyancy may be too strong and the lid member 34B may float too much. Therefore, in the third embodiment, by providing the projecting piece 46, the portion that generates the buoyancy is made smaller, and the lid member 34B is prevented from floating too much.

(第4実施形態)
次に、第4実施形態の排水部の防臭構造について図13を用いて説明する。なお、前述した実施形態に示される構成部分と同一構成部分については同一符号を付して重複する説明を省略する。
(Fourth embodiment)
Next, the deodorant structure of the drain section of the fourth embodiment will be described with reference to FIG. 13 . The same reference numerals are assigned to the same components as those shown in the above-described embodiment, and overlapping descriptions are omitted.

図13に示すように、第3実施形態の蓋部材34Cは、円盤状を成す部材であり、底面視で円形状を成す。蓋部材34Cの縁辺には、下方に突出される突出縁部38が形成されている。つまり、蓋部材34Cは、断面視でコ字形状を成す。さらに、蓋部材34Cの下面44には、その中心から放射状に延びる複数本の突起部45Cが設けられる。 As shown in FIG. 13, the lid member 34C of the third embodiment is a disc-shaped member and has a circular shape when viewed from the bottom. A protruding edge portion 38 that protrudes downward is formed on the edge of the lid member 34C. That is, the lid member 34C has a U shape in cross section. Further, a plurality of protrusions 45C radially extending from the center of the lower surface 44 of the lid member 34C are provided.

特定部としての突起部45Cは、蓋部材34Cの径方向に延びる凸状となっている。第3実施形態では、6本の突起部45Cが蓋部材34Cの下面44に周方向に等間隔に並んで設けられる。また、これらの突起部45Cは、筒部33Cの上端面37と重なる位置に設けられる。さらに、これらの突起部45Cの先端形状は、断面視で半円形状(図9参照)、または三角形状(図10参照)を成す。 45 C of protrusion parts as a specific part are convex shape extended in the radial direction of 34 C of cover members. In the third embodiment, six protrusions 45C are provided on the lower surface 44 of the lid member 34C at regular intervals in the circumferential direction. Moreover, these projecting portions 45C are provided at positions overlapping with the upper end surface 37 of the cylindrical portion 33C. Furthermore, the tip shape of these protrusions 45C is semicircular (see FIG. 9) or triangular (see FIG. 10) in a cross-sectional view.

なお、第3実施形態の筒部33Cの上端面37には、前述の実施形態のような突起部が設けられておらず、平坦面となっている。そして、蓋部材34Cが筒部33Cの上端面37に載置されると、蓋部材34Cの突起部45Cが、筒部33Cの上端面37に線接触される。また、前述の実施形態と同様に、突起部45が設けられた筒部33の上端面37に蓋部材34Cを載置しても良い。 Note that the upper end surface 37 of the tubular portion 33C of the third embodiment is not provided with the protrusions as in the above-described embodiments, and is a flat surface. Then, when the lid member 34C is placed on the upper end surface 37 of the cylindrical portion 33C, the protrusion 45C of the lid member 34C is in line contact with the upper end surface 37 of the cylindrical portion 33C. Further, similarly to the above-described embodiment, the lid member 34C may be placed on the upper end surface 37 of the cylindrical portion 33 provided with the protrusions 45 .

なお、突起部45Cは、蓋部材34Cの下面44と一体に形成されても良いし、別部材として突起部45Cを形成し、蓋部材34Cの下面44に突起部45Cを接着しても良い。 The protrusion 45C may be formed integrally with the lower surface 44 of the lid member 34C, or may be formed as a separate member and adhered to the lower surface 44 of the lid member 34C.

また、蓋部材34Cの上面にも突起部45Cを設けても良い。蓋部材34Cの上面と下面の両面に突起部45Cを設けることで、メンテナンスの作業者が間違って蓋部材34Cを上下反転して取り付けてしまっても、蓋部材34Cが筒部33Cの上端面37に貼り付いてしまうことを防止できる。 Also, the protrusion 45C may be provided on the upper surface of the lid member 34C. By providing the protrusions 45C on both the upper surface and the lower surface of the lid member 34C, even if the maintenance worker mistakenly installs the lid member 34C upside down, the lid member 34C will not be exposed to the upper end surface 37 of the cylindrical portion 33C. It is possible to prevent sticking to.

(第5実施形態)
次に、第5実施形態の排水部の防臭構造について図14を用いて説明する。なお、前述した実施形態に示される構成部分と同一構成部分については同一符号を付して重複する説明を省略する。
(Fifth embodiment)
Next, the deodorant structure of the drain section of the fifth embodiment will be described with reference to FIG. 14 . The same reference numerals are assigned to the same components as those shown in the above-described embodiment, and overlapping descriptions are omitted.

図14に示すように、第4実施形態の蓋部材34Dは、円盤状を成す部材であり、底面視で円形状を成す。蓋部材34Dの縁辺には、下方に突出される突出縁部38が形成されている。つまり、蓋部材34Dは、断面視でコ字形状を成す。さらに、蓋部材34Dの下面44には、複数の突起部45Dが設けられる。 As shown in FIG. 14, the lid member 34D of the fourth embodiment is a disk-shaped member, and has a circular shape when viewed from the bottom. A protruding edge portion 38 that protrudes downward is formed on the edge of the lid member 34D. That is, the lid member 34D has a U shape in cross section. Further, a plurality of protrusions 45D are provided on the lower surface 44 of the lid member 34D.

特定部としての突起部45Dは、蓋部材34Dの下面44に設けられた小さな円形の凸部となっている。第4実施形態では、12個の突起部45Dが蓋部材34Dの下面44に周方向に等間隔に並んで設けられる。また、これらの突起部45Dは、筒部33Cの上端面37と重なる位置に設けられる。なお、筒部33Cの上端面37と重なる位置であれば、蓋部材34Dの中心から、それぞれの突起部45Dまでの距離が異なっていても良い。さらに、これらの突起部45Dの先端形状は、断面視で半円形状(図9参照)、または三角形状(図10参照)を成す。 The protrusion 45D as the specific portion is a small circular protrusion provided on the lower surface 44 of the lid member 34D. In the fourth embodiment, 12 protrusions 45D are provided on the lower surface 44 of the lid member 34D so as to be arranged at regular intervals in the circumferential direction. Moreover, these projecting portions 45D are provided at positions overlapping with the upper end surface 37 of the cylindrical portion 33C. Note that the distances from the center of the lid member 34D to the projections 45D may be different as long as they overlap the upper end surface 37 of the cylindrical portion 33C. Furthermore, the tip shape of these protrusions 45D is semicircular (see FIG. 9) or triangular (see FIG. 10) in a cross-sectional view.

なお、第4実施形態の筒部33Cの上端面37には、前述の実施形態のような突起部が設けられておらず、平坦面となっている。そして、蓋部材34Dが筒部33Cの上端面37に載置されると、蓋部材34Dの突起部45Dが、筒部33Cの上端面37に点接触される。また、前述の実施形態と同様に、突起部45が設けられた筒部33の上端面37に蓋部材34Dを載置しても良い。 Note that the upper end surface 37 of the cylindrical portion 33C of the fourth embodiment is not provided with the protrusions as in the above-described embodiments, and is a flat surface. Then, when the lid member 34D is placed on the upper end surface 37 of the tubular portion 33C, the protrusion 45D of the lid member 34D makes point contact with the upper end surface 37 of the tubular portion 33C. Further, similarly to the above-described embodiment, the lid member 34D may be placed on the upper end surface 37 of the cylindrical portion 33 provided with the protrusion 45. FIG.

(第6実施形態)
次に、第6実施形態の排水部の防臭構造について図15を用いて説明する。なお、前述した実施形態に示される構成部分と同一構成部分については同一符号を付して重複する説明を省略する。
(Sixth embodiment)
Next, the deodorant structure of the drain section of the sixth embodiment will be described with reference to FIG. 15 . The same reference numerals are assigned to the same components as those shown in the above-described embodiment, and overlapping descriptions are omitted.

図15に示すように、第6実施形態の特定部としての筒部33Dの上端部は、その厚みが上方にゆくに従って薄くなる形状となっている。この筒部33Dの上端部の先端形状は、断面視で三角形状を成す。この筒部33Dの上端部が、筒部33Dの周方向に環状に延びる凸条となっている。また、蓋部材34は、断面視でコ字形状を成す円盤状の部材である。この蓋部材34が筒部33Dの上端部に載置されると、筒部33Dの上端部が蓋部材34の下面44に線接触される。 As shown in FIG. 15, the upper end portion of the tubular portion 33D as the specific portion of the sixth embodiment has a shape in which the thickness decreases upward. The tip shape of the upper end portion of the tubular portion 33D has a triangular shape in a cross-sectional view. The upper end portion of the tubular portion 33D forms a ridge extending annularly in the circumferential direction of the tubular portion 33D. The lid member 34 is a disk-shaped member having a U-shape in cross section. When the lid member 34 is placed on the upper end portion of the tubular portion 33D, the upper end portion of the tubular portion 33D is in line contact with the lower surface 44 of the lid member 34. As shown in FIG.

このようにすれば、蓋部材34が筒部33Dの開口を閉塞した状態で、蓋部材34の下面44と筒部33Dの上端面37との接触面積を小さくすることができる。そのため、蓋部材34が筒部33Dの上端面37に貼り付くことがなく、蓋部材34に浮力が生じたときに、蓋部材34をスムーズに上方に移動させることができる。 In this way, the contact area between the lower surface 44 of the lid member 34 and the upper end surface 37 of the tubular portion 33D can be reduced when the lid member 34 closes the opening of the tubular portion 33D. Therefore, the lid member 34 does not stick to the upper end surface 37 of the tubular portion 33D, and the lid member 34 can be smoothly moved upward when the lid member 34 is buoyant.

第6実施形態では、筒部33Dの上端部の先端形状が、その外周側から内周側に向かって高くなるように傾斜されている。このようにすれば、筒部33Dの上端部と蓋部材34と間に、その外周側から水Wを入り込み易くすることができる。 In the sixth embodiment, the tip shape of the upper end portion of the cylindrical portion 33D is inclined so as to become higher from the outer peripheral side toward the inner peripheral side. By doing so, it is possible to make it easier for the water W to enter between the upper end portion of the cylindrical portion 33D and the lid member 34 from the outer peripheral side thereof.

(第7実施形態)
次に、第7実施形態の排水部の防臭構造について図16を用いて説明する。なお、前述した実施形態に示される構成部分と同一構成部分については同一符号を付して重複する説明を省略する。
(Seventh embodiment)
Next, the deodorant structure of the drain section of the seventh embodiment will be described with reference to FIG. 16 . The same reference numerals are assigned to the same components as those shown in the above-described embodiment, and overlapping descriptions are omitted.

図16に示すように、第7実施形態の特定部としての筒部33Eの上端部は、その厚みが上方にゆくに従って薄くなる形状となっている。この筒部33Eの上端部の先端形状は、断面視で半円形状を成す。この筒部33Eの上端部が、筒部33Eの周方向に環状に延びる凸条となっている。また、蓋部材34は、断面視でコ字形状を成す円盤状の部材である。この蓋部材34が筒部33Eの上端部に載置されると、筒部33Eの上端部が蓋部材34の下面44に線接触される。 As shown in FIG. 16, the upper end portion of the cylindrical portion 33E as the specific portion of the seventh embodiment has a shape in which the thickness decreases upward. The tip shape of the upper end portion of the cylindrical portion 33E has a semicircular shape in a cross-sectional view. The upper end portion of the tubular portion 33E forms a ridge extending annularly in the circumferential direction of the tubular portion 33E. The lid member 34 is a disc-shaped member having a U-shape in cross section. When the lid member 34 is placed on the upper end portion of the tubular portion 33E, the upper end portion of the tubular portion 33E is in line contact with the lower surface 44 of the lid member 34. As shown in FIG.

このようにすれば、蓋部材34が筒部33Eの開口を閉塞した状態で、蓋部材34の下面44と筒部33Eの上端面37との接触面積を小さくすることができる。そのため、蓋部材34が筒部33Eの上端面37に貼り付くことがなく、蓋部材34に浮力が生じたときに、蓋部材34をスムーズに上方に移動させることができる。 In this way, the contact area between the lower surface 44 of the lid member 34 and the upper end surface 37 of the tubular portion 33E can be reduced when the lid member 34 closes the opening of the tubular portion 33E. Therefore, the lid member 34 does not stick to the upper end surface 37 of the cylindrical portion 33E, and the lid member 34 can be smoothly moved upward when buoyancy is generated in the lid member 34 .

(第8実施形態)
次に、第8実施形態の排水部の防臭構造について図17を用いて説明する。なお、前述した実施形態に示される構成部分と同一構成部分については同一符号を付して重複する説明を省略する。
(Eighth embodiment)
Next, the deodorizing structure of the drainage part of the eighth embodiment will be described with reference to FIG. 17 . The same reference numerals are assigned to the same components as those shown in the above-described embodiment, and overlapping descriptions are omitted.

図17に示すように、第8実施形態の特定部としての筒部33Cの上端部は、水平を成す平坦面としての上端面37が形成される。つまり、この筒部33Cの上端部の先端形状は、断面視で四角形状を成す。そして、この上端面37には、前述の実施形態のような突起部が設けられていない。この筒部33Cの上端部の外周縁が、筒部33Cの周方向に環状に延びる凸条となっている。 As shown in FIG. 17, an upper end surface 37 as a horizontal flat surface is formed at the upper end portion of a cylindrical portion 33C as a specific portion of the eighth embodiment. In other words, the tip shape of the upper end portion of the cylindrical portion 33C forms a quadrangular shape in a cross-sectional view. Further, the upper end surface 37 is not provided with a projection like the above-described embodiment. The outer peripheral edge of the upper end portion of the tubular portion 33C forms a ridge extending annularly in the circumferential direction of the tubular portion 33C.

第8実施形態の蓋部材34Eは、断面視で逆U字形状を成す湾曲された部材である。この蓋部材34Eは、その中央部が上方に膨出するように湾曲されている。つまり、蓋部材34Eの下面44Aは、所定の曲率を有する湾曲面となっている。この蓋部材34Eが筒部33Cの上端部に載置されると、筒部33Cの上端部の外周縁が蓋部材34Eの下面44Aに線接触される。 The lid member 34E of the eighth embodiment is a curved member having an inverted U shape in cross section. The lid member 34E is curved such that its central portion bulges upward. That is, the lower surface 44A of the lid member 34E is a curved surface having a predetermined curvature. When the lid member 34E is placed on the upper end portion of the tubular portion 33C, the outer peripheral edge of the upper end portion of the tubular portion 33C is in line contact with the lower surface 44A of the lid member 34E.

このようにすれば、蓋部材34Eが筒部33Cの開口を閉塞した状態で、蓋部材34Eの下面44Aと筒部33Cの上端面37との接触面積を小さくすることができる。そのため、蓋部材34Eが筒部33Cの上端面37に貼り付くことがなく、蓋部材34Eに浮力が生じたときに、蓋部材34Eをスムーズに上方に移動させることができる。 In this way, the contact area between the lower surface 44A of the lid member 34E and the upper end surface 37 of the tubular portion 33C can be reduced when the lid member 34E closes the opening of the tubular portion 33C. Therefore, the lid member 34E does not stick to the upper end surface 37 of the cylindrical portion 33C, and the lid member 34E can be smoothly moved upward when buoyancy is generated in the lid member 34E.

以上説明したように、第1~5実施形態では、特定部が、蓋部材の下面または筒部の上端面から突出される突起部であることで、突起部により蓋部材の下面側と筒部の上端面との間に隙間が形成され、この隙間から水が入り込むので、蓋部材が筒部の上端面に貼り付いてしまうことを防止することができる。 As described above, in the first to fifth embodiments, the specific portion is a protrusion that protrudes from the lower surface of the lid member or the upper end surface of the tubular portion. A gap is formed between the upper end surface of the cylindrical portion and the water entering through the gap, so that the lid member can be prevented from sticking to the upper end surface of the cylindrical portion.

また、第1~5実施形態では、少なくとも3つの突起部が、蓋部材の下面または筒部の上端面に周方向に並んで設けられることで、蓋部材の下面側と筒部の上端部の間に、周方向のいずれの方向からでも、水が入り込むようになり、蓋部材が筒部の上端面に貼り付いてしまうことを防止することができる。 In addition, in the first to fifth embodiments, at least three protrusions are arranged in the circumferential direction on the lower surface of the lid member or the upper end surface of the tubular portion, so that the lower surface side of the lid member and the upper end portion of the tubular portion are arranged. It is possible to prevent the lid member from sticking to the upper end surface of the cylindrical portion by allowing water to enter from any direction in the circumferential direction.

また、第1~5実施形態では、突起部の先端形状が断面視で半円形状または三角形状を成すことで、蓋部材の下面側と筒部の上端面とを点接触または線接触させる構造を実現することができる。 Further, in the first to fifth embodiments, the shape of the tip of the protrusion is semicircular or triangular in cross section, so that the lower surface of the lid member and the upper end surface of the cylindrical portion are in point contact or line contact. can be realized.

また、第6~8実施形態では、特定部が筒部と一体となっているので、特定部の強度を向上させることができる。 Further, in the sixth to eighth embodiments, the specific portion is integrated with the cylindrical portion, so the strength of the specific portion can be improved.

また、第6~7実施形態では、筒部の上端部の先端形状が断面視で半円形状または三角形状を成すことで、蓋部材の下面側と筒部の上端面とを点接触または線接触させる構造を実現することができる。 Further, in the sixth and seventh embodiments, the tip shape of the upper end portion of the cylindrical portion is semicircular or triangular in cross section, so that the lower surface side of the lid member and the upper end surface of the cylindrical portion are in point contact or linear contact. Contacting structures can be realized.

本実施形態に係る排水部の防臭構造を第1実施形態から第8実施形態に基づいて説明したが、いずれか1の実施形態において適用された構成を他の実施形態に適用しても良いし、各実施形態において適用された構成を組み合わせても良い。 Although the deodorant structure of the drainage part according to the present embodiment has been described based on the first to eighth embodiments, the configuration applied in any one embodiment may be applied to other embodiments. , the configurations applied in each embodiment may be combined.

なお、本実施形態では、排水部の防臭構造が店舗に設置されるオープンショーケースに適用されているが、その他の什器に本実施形態の排水部の防臭構造が適用されても良い。例えば、家庭用の冷蔵設備に本実施形態の排水部の防臭構造を適用しても良いし、簡易型または携帯型のシンクに本実施形態の排水部の防臭構造を適用しても良い。 In the present embodiment, the deodorant structure of the drainage section is applied to an open showcase installed in a store, but the deodorant structure of the drainage section of the present embodiment may be applied to other fixtures. For example, the deodorant structure of the drain according to the present embodiment may be applied to household refrigeration equipment, or the deodorant structure of the drain according to the present embodiment may be applied to a simple or portable sink.

以上説明した少なくとも1つの実施形態によれば、蓋部材の下面側と筒部の上端部とを点接触または線接触させる特定部を備えることにより、蓋部材が筒部の上端部に貼り付いてしまうことを防止することができる。 According to at least one embodiment described above, the lid member is attached to the upper end portion of the tubular portion by providing the specific portion that makes point contact or line contact between the lower surface side of the lid member and the upper end portion of the tubular portion. You can prevent it from slipping.

本発明のいくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更、組み合わせを行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれると同様に、特許請求の範囲に記載された発明とその均等の範囲に含まれるものである。 While several embodiments of the invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, changes, and combinations can be made without departing from the scope of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, as well as the scope of the invention described in the claims and equivalents thereof.

1…オープンショーケース、2…陳列室、3…天井部、4…基台部、5…ガラス板、6…天井板、7…底面棚板、8…後面板、9…陳列棚、10…商品、11~15…陳列部、16…吸込部、17…蓋材、18…吹出部、19…断熱部、20…冷気循環ダクト、21…冷気循環用送風機、22…蒸発器、23…圧縮機、24…凝縮器、25…放熱用送風機、26…流通部、27…庇部、28…照明部、29…底面、30…排水部、31…排水パイプ、32…水受部、33(33A~33E)…筒部、34(34A~34E)…蓋部材、35…フィルタ部材、36…エルボ管、37…上端面、38…突出縁部、39…突出片、40…掛止片、41…孔部、42…フィルタ部材の下面、43…蓋部材の上面、44(44A)…蓋部材の下面、45(45A~45D)…突起部、46…凸片、G…間隙、K…冷気、L1…離間寸法、L2…突出寸法、R…円弧直径、S…水面、W…水。 DESCRIPTION OF SYMBOLS 1... Open showcase, 2... Display room, 3... Ceiling part, 4... Base part, 5... Glass plate, 6... Ceiling plate, 7... Bottom shelf plate, 8... Rear plate, 9... Display shelf, 10... Goods 11 to 15 Display unit 16 Suction unit 17 Lid material 18 Blow-out unit 19 Heat insulation unit 20 Cool air circulation duct 21 Cool air circulation blower 22 Evaporator 23 Compression Machine 24 Condenser 25 Blower for heat radiation 26 Distribution part 27 Overhead part 28 Lighting part 29 Bottom surface 30 Drainage part 31 Drainage pipe 32 Water receiving part 33 ( 33A to 33E)... Cylindrical part 34 (34A to 34E)... Lid member 35... Filter member 36... Elbow pipe 37... Upper end surface 38... Protruding edge 39... Protruding piece 40... Hooking piece, 41... hole, 42... lower surface of filter member, 43... upper surface of lid member, 44 (44A)... lower surface of lid member, 45 (45A to 45D)... protrusion, 46... convex piece, G... gap, K... Cold air, L1... Distance dimension, L2... Projection size, R... Arc diameter, S... Water surface, W... Water.

Claims (5)

流れ込んだ水を受けるカップ状を成す水受部と、
前記水を外部に排水する排水パイプと連通され、前記水受部の底面の中央から上方に突出される筒状を成す筒部と、
前記水受部に溜まった前記水により生じる浮力で浮く比重を有し、前記筒部の上端部の開口を閉塞し、前記浮力が生じたときに上方に移動する蓋部材と、
前記蓋部材の下面または前記筒部の上端面から突出し、前記蓋部材の下面側と前記筒部の上端部とを点接触または線接触させる突起部と、
を備える排水部の防臭構造。
a cup-shaped water receiving portion for receiving water that has flowed in;
a tubular portion communicating with a drain pipe for draining the water to the outside and protruding upward from the center of the bottom surface of the water receiving portion;
a lid member that has a specific gravity that floats by the buoyancy generated by the water accumulated in the water receiving portion, closes the opening at the upper end of the cylindrical portion, and moves upward when the buoyancy is generated ;
a projecting portion projecting from the lower surface of the lid member or the upper end surface of the tubular portion and causing point contact or line contact between the lower surface side of the lid member and the upper end portion of the tubular portion;
Deodorizing structure of the drainage part.
少なくとも3つの前記突起部が、前記蓋部材の下面または前記筒部の上端面に周方向に並んで設けられる請求項に記載の排水部の防臭構造。 2. The deodorizing structure for a drainage part according to claim 1 , wherein at least three of said protrusions are provided on the lower surface of said cover member or on the upper end surface of said cylinder part in a circumferential direction. 前記突起部の先端形状が、断面視で半円形状または三角形状を成す請求項1または請求項に記載の排水部の防臭構造。 3. The deodorizing structure for a drainage part according to claim 1 , wherein a tip shape of said protrusion is semicircular or triangular in cross section. 前記蓋部材が、断面視でコ字形状を成し、前記蓋部材の縁辺が下方に突出される請求項1から請求項のいずれか1項に記載の排水部の防臭構造。 4. The deodorizing structure for a drainage section according to claim 1 , wherein the lid member has a U-shape in a cross-sectional view, and an edge of the lid member protrudes downward. 前記蓋部材の縁辺の少なくとも一部から下方に突出される凸片を備える請求項1から請求項のいずれか1項に記載の排水部の防臭構造。 5. The deodorizing structure for a drainage section according to claim 1 , further comprising a projecting piece protruding downward from at least a part of the edge of the lid member.
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