JP2013090864A - Cold air circulation type open showcase - Google Patents

Abstract

The present invention provides a multi-stage cold air circulation open showcase that is improved so that high energy-saving and power-saving effects can be exhibited according to the state of product display in a warehouse.
Cooling air outlet holes 5a opened to air curtain outlets 2a and 3a and rear panel 5 from cold air ducts 2 and 3 to case body 1 in which a multistage product display shelf 8 is installed in the cabinet. In the cool air circulation type showcase that circulates cool air into the cabinet through the shelf panel 8a, an opening / closing window 5b for inserting a shelf board is provided on the back panel 5 so as to face the rear end of the shelf board 8a of the product display shelf 8. , So that the rear end of the shelf 8a protrudes from the opening / closing window 5b into the inner duct 2 behind the panel and disconnects the ventilation path in the middle, and is “empty” by the night cover 12 extended from the storage portion 12a. In the operation state where the front of the shelf is covered, the cool air blowing from the back side is stopped toward the upper space of the “empty” shelf, and the energy saving and power saving effect of the showcase is enhanced.
[Selection] Figure 1

Description

  The present invention forms a cold air curtain in the front area of the front of the case main body in which the product display shelves arranged in the upper and lower stages are arranged in the warehouse, and the products on each stage also from the back side in the warehouse. The present invention relates to a multi-stage cold air circulation open showcase that keeps displayed products cold by blowing cold air between display shelves.

  As the cold air circulation open showcase described above, a cold air curtain is formed in the front area of the case body with the front open, and from the back side toward the product display shelves arranged in the upper and lower stages. There are known open showcases in which cool air is blown out to keep the inside of the cabinet even (see, for example, Patent Document 1). Recently, open showcase products that employ this method are widely deployed in the market. ing.

  Next, the structure of the open showcase is shown in FIG. In the figure, 1 is an open front case body that becomes a heat-insulating housing, 2 and 3 are inner and outer layers of inner and outer layers that are defined between an outer box and an inner box of the case body 1 to circulate cool air, The outer duct 2a and 3a are connected to the inner duct 2 and the outer duct 3, and the inner and outer air curtain outlets 4 and 4 are opened at the lower front end of the case body 1, respectively. Air curtain suction port, 5 is a back panel of the inner box, 6 is a cooler disposed in the inner duct 2, 7 is a fan, 8 is a product display shelf arranged in the upper and lower stages, and 9 is a product display shelf. Shelf brackets 10 for carrying shelf boards 10 are deck pans arranged at the bottom of the cabinet, and cold air outlet holes 5a (drilled on the wall surface of the back panel 5 corresponding to the upper and lower product display shelves 8 ( For example, punching holes) It is mouth.

  The cold insulation operation of the above-mentioned cold air circulation type open showcase is also described in detail in Patent Document 1, and during the cold insulation operation, the case main body passes through the inner duct 2 and the outer duct 3 as shown by the dotted arrows in FIG. The air curtains A and B having two layers inside and outside are blown out from the air curtain outlets 2a and 3a toward the suction port 4 in the front surface area of 1. In addition, the cold air flow C is blown out from the middle of the path of the inner duct 2 through the cold air blowing holes 5a drilled in the back panel 5 corresponding to the commodity display shelves 8 arranged in the upper and lower stages, and the products at each stage. The product 11 displayed on the display shelf 8 and the deck pan 10 is kept cold.

  On the other hand, open showcases that are installed and used in stores such as supermarkets are equipped with a night cover that can be rolled up / rolled out as standard on the upper front end of the case body as an energy-saving measure. The night cover is extended from the storage position and the front opening of the case body is covered with the cover to prevent the outside air heat from entering the cabinet from the surroundings (see, for example, Patent Document 2).

  By the way, in stores such as supermarkets and convenience stores, the sales volume of products often varies depending on the business day and business hours on weekdays and holidays, and all products in the showcase are displayed even at low sales times such as at night. Keeping the shelves 8 full of products and keeping the entire interior cold will increase power consumption and increase running costs.

  Therefore, during business hours when the sales volume is low, such as at night, the quantity of various products displayed in the showcase is reduced and concentrated on the shelves on the lower side of the cabinet, resulting in “empty” Also known is an open showcase with measures to reduce power consumption by covering the front of the product display shelf on the upper side of the cabinet with a night cover to reduce the cold storage load and the required cold storage area in the cabinet. (For example, see Patent Document 3 and Patent Document 4).

  Here, in the open showcase disclosed in Patent Document 3, air is not provided in the ceiling of the case body separately from the night cover (see Patent Document 2) that is standardly provided in the front of the case body. A night cover is provided on the inner side (inner side) of the curtain outlet. In the operation state in which the shelf “empty” lined up on the upper side in the warehouse is used as described above, the cover is pulled down from the storage unit so as to cover the front surface of the “empty” product display shelf.

  Further, in the open showcase disclosed in Patent Document 4, an air guide that allows the air curtain to pass is provided at the front end of the night cover that is provided as a standard outside the air curtain outlet. In the state where the night cover extended from the storage part of the ceiling is hooked to the front end of the shelf and the front cover is covered with the night cover on the upper shelf that has become “empty” as described above, the wind guide A wind guide path for the air curtain is secured between the front end of the display shelf and the night cover through the air guide, and the air curtain that flows down from above along the inner surface of the night cover is guided to the lower area in the cabinet to lower the side The air curtain is formed and maintained in front of the shelf.

Japanese Patent Application Laid-Open No. 7-234059 (FIGS. 1 and 2) Japanese Patent Laying-Open No. 2003-111651 (FIG. 4) Japanese Patent No. 3724613 (FIGS. 1 to 3) Japanese Patent Laying-Open No. 2011-104081 (FIGS. 2 and 3)

By the way, with regard to the above-described cold air circulation type open showcase, it is an important development theme to further improve the power saving and energy saving effect in its operation.
In this respect, if the energy saving method using the night cover disclosed in the above-mentioned Patent Document 3 or Patent Document 4 is applied to the cold air blow-out open showcase shown in FIG. However, the following issues remain.

  That is, as described above, during the business hours when the sales volume of products is small, the displayed products are transferred to the shelves arranged on the lower side of the warehouse, and the product display shelves on the upper side of the warehouse that have become `` empty '' Even when the night cover (see Patent Literature 3 and Patent Literature 4) is extended from the storage portion and the front surface of the “empty” product display shelf is covered, the upper space of the shelf covered with the night cover is the rear panel 5. It communicates with the inner duct 2 through the cold air blowing hole 5a that is open at the top (see FIG. 4).

  For this purpose, a part of the cool air passing through the cooler 6 to the inner duct 2 is blown out through the cool air blowing holes 5a of the back panel 5 to the upper space of the “empty” product display shelf whose front face is covered with a night cover. As a result, the space above the “empty” product display shelf, which originally does not need to be kept cool, will be kept cold. Even if the upper shelf is made “empty” as it is, the space that needs to be kept cool will be reduced. The energy and power saving effects cannot be fully demonstrated.

  The present invention has been made in view of the above points, and has been improved in a cold air circulation type open so that a high energy-saving and power-saving effect can be exhibited in accordance with the product display status of the product display shelves arranged in the upper and lower stages in the refrigerator during cold storage operation. The purpose is to provide a showcase.

In order to achieve the above object, according to the present invention, a product display shelf having a plurality of upper and lower stages is provided in a cabinet of an open front case body, and the cooler is defined between the inner box / outer box of the case body. , A multi-stage cold air circulation open showcase that cools and blows cool air into the cabinet through a cold air circulation duct with a fan,
The product display shelf has its shelf board supported by a shelf bracket and is installed on the rear panel of the case body, and the air curtain blows out the air curtain to the front area of the cabinet through the cold air circulation duct on the ceiling of the case body. In addition to opening the outlet, the back panel in the cabinet has a cold air outlet hole corresponding to each of the upper and lower product display shelves to blow out cold air from the middle path of the cold air duct to the interior, and In the ceiling part with a night cover that extends downward from the storage position and covers the front of the product display shelf,
An opening / closing window for inserting a shelf plate is provided on the rear panel so as to face the rear end of the shelf plate of each stage of the product display shelf, and the shelf plate of the product display shelf is supported so as to be slidable back and forth with respect to the shelf bracket. Then, by pushing the shelf board of the product display shelf of the selected stage from the front, the rear end of the shelf board protrudes from the opening / closing window to the cool air circulation duct behind the panel, and interrupts the ventilation path of the duct on the way ( Claim 1), based on this configuration, is specifically implemented in the following manner.

(1) In the above-described configuration, the storage of the night cover that covers the front of the product display shelf is arranged on the inner side of the air curtain outlet that opens in the interior ceiling, and the product display shelf arranged in the upper and lower stages The night cover extended from the storage portion is hooked to the front end of the plate so that the front surface of the space above the shelf is covered with the night cover (Claim 2).
(2) The front end of the shelf of the product display shelves lined up and down after the storage portion of the night cover covering the front of the product display shelf is arranged outside the air curtain outlet that opens in the ceiling of the store Is provided with an air guide that allows the air curtain to flow down from above along the inner surface of the night cover when the night cover is hooked.
(3) When the product display shelves arranged in the upper and lower stages are provided with an extension that can be pulled out forward in the cabinet at the front of the shelf board, and the front of the product display shelf is covered with a night cover when it becomes “empty” Further, the extension portion is pulled forward and a night cover is hung on the tip (claim 4).
(4) The shelf brackets of the product display shelves arranged in the upper and lower stages are provided with a shelf angle adjustment mechanism for setting the shelf plate to an upward angle, and when the product display shelves in the selected stage are covered with the night cover, they are arranged in the lower stages. The field of view of the shelf from the front is expanded to enhance the display effect of the products displayed on the shelf.

According to the above configuration, the following energy saving and power saving effects can be improved and improved in the operation of the cold air circulation type open showcase that is installed and used in a store.
That is, as described above, the night cover that is fed out from the storage part of the ceiling part in the cold storage operation state in which the total number of products to be displayed in the warehouse is arranged and the products are transferred to the product display shelves arranged on the lower side of the warehouse. Is attached to the shelf on the upper panel that is emptied, and when the front of the space above the shelf is covered with a cover, the shelf board on the rear panel is pushed into the rear panel by pushing the shelf board from the front. The rear end portion of the shelf board which pushes open the opening and closing window and protrudes behind it cuts off the ventilation path of the cold air circulation duct.

  As a result, the cold air that blows out from the middle of the cold air circulation duct through the cold air outlet hole of the rear panel is limited to the area of the lower product display shelf displaying the product, and the `` empty '' covered front by the night cover In the space on the shelf of the product display shelf (this space does not need to be kept cold), the cold air does not flow through the cold air blowout hole formed in the back panel. As a result, the effective cold load of the showcase is reduced, the power consumption of the refrigerator is reduced, and high energy saving and power saving effects can be achieved.

  In this case, the night cover is hung on the front end of the shelf of each product display shelf, so that the night cover is hung on the product display shelf selected according to the product display situation in the warehouse, and the front of the shelf. Can be covered.

  Also, even when the night cover placed on the outside of the air curtain outlet is `` empty '' and covers the front of the shelf, by providing an air curtain wind guide at the front end of the product display shelf, The function of the air curtain can be maintained by guiding the air curtain flowing down from above along the inner surface of the night cover to the lower side region in the cabinet.

  Furthermore, by providing an extension that can be pulled out forward in the cabinet at the front of the shelf of the product display shelf, when the night cover is hung on the shelf at the selected stage, the extension can be pulled forward. The night cover can be easily latched without interference with other shelves.

  In addition, a shelf angle adjustment mechanism that sets the shelf plate to an upward angle is provided on the shelf bracket that carries the shelf plate of the commodity display shelf, and the “empty” shelf plate that latches the night cover is set to the upward shelf angle. Thus, it is possible to enhance the display effect of the products displayed on the shelf by expanding the field of view from the front of the shelf arranged in the lower level.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram of the cold-air circulation type open showcase corresponding to Example 1 of this invention, Comprising: (a) is the cold storage operation which made the product display shelf of the upper stage side in a warehouse "empty", and covered the front surface with the night cover (B) and (c) show the state in which products are displayed on the product display shelf, and the shelf is made “empty” and the shelf board is set at an upward shelf angle. It is a figure showing the state which set and latched the night cover. A showcase showing a state of cold insulation operation in which the night cover is hooked and the front surface of the shelf is covered with the night cover without changing the shelf angle of the “empty” shelf board with respect to FIG. FIG. It is a block diagram of the cool air circulation type open showcase corresponding to Example 2 of this invention, Comprising: (a) is the cold storage operation which made the product display shelf of the upper stage side in a warehouse "empty", and covered the front surface with the night cover The side view sectional drawing inside the showcase showing the state of (2) is a perspective view showing the wind guide of the air curtain comprised in the shelf front part of the merchandise display shelf in (a). It is a figure showing the internal structure of the conventional cold air circulation type open showcase of the system which blows off cold air from the back panel toward the interior, and its cold air circulation path.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on the examples shown in FIGS. In addition, in the figure of an Example, the same code | symbol is attached | subjected to the member corresponding to FIG. 4, and the description is abbreviate | omitted.

  FIGS. 1A to 1C show an embodiment corresponding to claims 1, 2, 4, and 5 of the present invention. This embodiment is based on the configuration of the cold air circulation type open showcase described in FIG. 4, and the storage part 12a of the night cover 12 is provided on the inner ceiling of the inner air curtain outlet 2a on the inner ceiling of the inner storage. A night cover that is unrolled from the storage portion 12a at the tip of the product display shelf 8 (the shelf arranged in the third row from the top in the figure) in an operating state in which the product display shelf 8 arranged on the upper side of the inside is “empty” 12 is latched so as to cover the front surface of the upper space of the shelf.

  Here, on the rear panel 5 in the store corresponding to the upper and lower product display shelves 8, in addition to the cold air outlet 5 a described above, a shelf facing the rear end of the shelf plate 8 a of the product display shelf 8. An opening / closing window 5b for insertion is provided. Reference numeral 5b-1 denotes an opening / closing lid provided on the opening / closing window 5b, and the opening / closing lid 5b-1 is normally biased to be closed.

  On the other hand, the shelf board 8a of the upper and lower product display shelves 8 is slidably supported on the shelf bracket 9 via rollers or the like, and can be pulled forward to the front of the shelf board 5a. 1b, and a shelf fence 8c at the tip thereof is provided with a fastener 8d for hooking a hook 12b provided at the tip of the night cover 12 (see FIG. 1B). In addition, 8e is the wind shielding packing affixed on the rear-end surface of the shelf board 8a, The role is mentioned later.

  Further, the shelf bracket 9 of the commodity display shelf 8 is configured so that the shelf angle of the shelf plate 8a can be switched between the downward angle shown in FIG. 1 (b) and the upward angle shown in FIG. 1 (c). As the shelf angle adjusting mechanism, the rear end of the shelf bracket 9 is formed into a chevron shape, and one of the illustrated engagement claws 9a and 9b is selected and locked to the rear panel 5.

  Then, when installing the open showcase in the store and performing the cold insulation operation, the operation state in which the display product is moved to the lower shelf in the cabinet and the upper product display shelf 8 is “empty” as described above. Then, when the night cover 12 is extended from the storage portion 12a to cover the front surface of the upper shelf that has become “empty”, the following operation is performed.

  First, products 11 displayed on the product display shelves 8 arranged in the upper three rows as shown in the figure from the normal cold storage operation state in which the products 11 are displayed on the product display shelves 8 in all stages of the warehouse (FIG. 1B) (See) to make the shelf “empty”, and then move the shelf bracket 9 corresponding to the shelf from the position of FIG. 1A to the position of FIG. 1B to change the shelf angle of the shelf plate 8a. Set to an upward angle. Next, when the shelf board 8a of the product display shelf 8 is pushed backward, the rear end of the shelf board 8a pushes open the opening / closing lid 5b-1 of the opening / closing window 5b provided on the back panel 5, and the rear end of the shelf board 8a. The part protrudes behind the back panel 5, and the cold air ventilation path of the inner duct 2 is disconnected halfway at the protruding position with the shelf board 8a as a wind shield damper. In this case, the packing 8e attached to the rear end of the shelf board 8a hits the back wall of the inner duct to prevent unnecessary cold air leakage. Further, the extension portion 8b of the shelf board 8a is pulled forward, and the hook 12b of the night cover 12 is hung on the fastener 8d at the tip so as to cover the front surface of the “empty” shelves arranged on the upper side.

  FIG. 1A shows the ventilation state in the store during this operation. By pushing the product display shelf 8 as described above, the front of the store is opened from the ventilation path of the inner duct 2 through the cool air blowing hole 5a of the rear panel 5. The cool air blown out toward the top is limited to the area of the lower product display shelf 8 displaying the product 11, and the upper space of the "empty" shelf on the upper side of the cabinet covered with the night cover 12 (this When the space does not need to be kept cold), the cool air does not pass through the cool air blowing holes 5a formed in the back panel 5 to the inside of the cabinet. As a result, the effective cold load of the showcase is reduced, and accordingly, the power consumption of the refrigerator is reduced and a high energy saving and power saving effect can be achieved. Even in this operating state, the air curtain B is formed in the front area of the interior through the outer duct 3 through the outer air curtain outlet 3a.

  Further, in FIG. 1A, the shelf angle of the product display shelf 8 that latches the night cover 12 is adjusted and set upward. Thereby, the field of view from the front of the product display shelves 8 arranged in the lower level is expanded, and the display effect of the products 11 displayed on the shelves can be enhanced.

  It is not always necessary to adjust the shelf angle of the merchandise display shelf 8, and if it is not particularly necessary to expand the field of view of the shelves arranged in the lower stage, the merchandise display shelf 8 is the same shelf as in steady operation as shown in FIG. The night cover 12 may be latched while being fixed at an angle.

  Next, as an application example of the first embodiment, the air guide guide for the air curtain according to claim 3 of the present invention is provided at the front end portion of the commodity display shelf 8, and the standard is disposed on the front end side of the interior ceiling portion. An embodiment in which the night cover 13 of the equipment is used to cover the front side of the upper shelf that has become “empty” will be described with reference to FIGS.

  This embodiment basically pushes the cold air outlet 5a and the shelf board 8a into the rear panel 5 in the product display shelf 8 capable of the same pushing operation and adjusting the shelf angle as described in the first embodiment. In addition to opening / closing windows 5b for inserting shelf boards, each product display shelf 8 is additionally equipped with an air curtain air guide 8f having the following structure at the end of the shelf board 8a. . That is, as shown in FIG. 3B, the front end portion of the extension portion 8b of the commodity display shelf 8 has an air guide hole 8a-1 opened in the shelf width direction and along the inside of the air guide hole 8a-1. The installed air guide wall 8f-2 constitutes the air curtain guide 8f.

  3 (a) in which the product display shelves 8 arranged in three rows on the upper side of the cabinet are made "empty", they are arranged in the outer air curtain outlet 3a opened in the ceiling of the case body 1 The night cover 13 provided on the outer side of the warehouse is extended from the storage portion 13a so as to cover the front side of the upper shelf that has become “empty”.

  Further, in this case, as described in the first embodiment, the shelf angle of the “empty” product display shelves 8 arranged in the third row from the top is set upward, and the rear of the shelf board 8a. After the end is inserted behind the back panel 5 and the air duct of the inner duct 2 is disconnected, the shelf extension 8b is pulled forward and the night cover 13 is hung on the front end.

  In this cold insulation operation state, as described in the first embodiment, the cold air C blown out from the ventilation passage of the inner duct 2 through the cold air blowing hole 5a of the rear panel 5 into the warehouse is the inside of the warehouse displaying the product 11. The rear panel is limited to the area of the product display shelf 8 arranged on the lower side, and the upper space of the “empty” shelf on the upper side of the cabinet covered with the night cover 13 (this space does not need to be kept cold). As a result, the cool air C does not pass through the cool air blowing hole 5a drilled in the inside of the cabinet 5 so that high energy saving and power saving effect can be achieved.

  Moreover, in this case, the air curtain B that blows downward from the outer air curtain outlet 3a in the ceiling and flows down along the inner surface of the night cover 13 is the air curtain provided at the front end of the commodity display shelf 8. Since the air is guided to the front of the lower area in the interior through the air guide 8f, the function of the air curtain B is normally maintained. The night cover 13 can also be used as a cover that covers the entire front surface of the shelf.

  As is clear from the description of the first and second embodiments, according to the present invention, the product display shelf 8 arranged on the upper side in the showcase cabinet is displayed in the business hours when the product sales quantity is small, such as at night or just before closing. The upper stage where the night cover 12 or 13 extended from the storage part of the ceiling part in the warehouse is "empty" in the operation state in which the goods are transferred to the product display shelf or the deck pan lined up on the lower side in the warehouse with "empty" When the front of the upper space of the shelf is covered with the night cover by hanging on the front end of the shelf on the side, the shelf plate 8a of the step is pushed in from the front, so that the middle of the ventilation path of the inner duct 2 is the shelf plate 8a. Disconnected. As a result, unnecessary cold air ventilation from the rear side to the space above the shelf of the “empty” product display shelf covered with the night cover 12 or 13 (this space does not need to be kept cold) is stopped and the showcase is displayed. Energy saving and power saving effect.

DESCRIPTION OF SYMBOLS 1 Case body 2 Inner duct 3 Outer duct 2a, 3a Air curtain outlet 4 Air curtain inlet 5 Back panel 5a Cold air outlet 5b Opening and closing window for shelf board insertion 6 Cooler 7 Fan 8 Merchandise display shelf 8a Shelf board 8b Extension 8f Air curtain air guide 9 Shelf bracket 9a, 9b Locking claw 11 for shelf angle adjustment setting Product 12, 13 Night cover 12a, 13a Night cover storage

Claims (5)

Equipped with multiple upper and lower product display shelves inside the open front case body, cool air inside the case through a cool air circulation duct that is defined between the inner box / outer box of the case body and a cooler and fan are placed It is a multi-stage cold air circulation open showcase that keeps the displayed goods in the cabinet cold by circulating air
The product display shelf has a shelf board supported by a shelf bracket and is installed on the back panel of the case body, and an air curtain outlet that blows out an air curtain to the front area of the interior through the cold air circulation duct on the ceiling of the case body. In addition to opening, on the back panel in the warehouse, corresponding to the product display shelves of the upper and lower stages, open a cold air outlet hole for blowing out cold air from the midway path of the cold air duct to the interior, and further in the interior In the ceiling portion of the door, with a night cover that extends downward from the storage position and covers the front of the product display shelf,
The rear panel is provided with an opening / closing window for inserting a shelf board facing the rear end of the shelf board of each stage of the product display shelf, and the rear end of the shelf board pushes the opening / closing window open by pushing the product display shelf. The cool air circulation open showcase is characterized in that the shelf board is slidably supported by the shelf bracket so as to protrude into the cool air circulation duct behind the panel.   2. The open showcase according to claim 1, wherein the night cover storage portion covering the front surface of the product display shelf is disposed on the inner side of the air curtain outlet opening in the ceiling portion of the warehouse, and the products are arranged in the upper and lower stages. A cold air circulation type open showcase characterized in that a night cover fed out from the storage portion is hooked to a front end of a shelf plate of a display shelf so that the front of the space above the shelf is covered with a night cover.   2. The open showcase according to claim 1, wherein the storage unit of the night cover that covers the front surface of the product display shelf is arranged outside the air curtain outlet that opens in the ceiling part of the cabinet, and then the products lined up and down. Cooling air circulation characterized in that the front end of the shelf of the display shelf is provided with a wind guide that allows passage of an air curtain flowing down from above along the inner surface of the night cover when the night cover is latched Ceremony open showcase.   In the open showcase according to any one of claims 1 to 3, the product display shelves arranged in the upper and lower stages are provided with an extension part that can be pulled out forward in the cabinet at the front part of the shelf board, and become "empty". When the front surface of the product display shelf is covered with a night cover, the cold air circulation type open showcase is characterized in that the extension portion is pulled forward and the night cover is hung on the tip.   The open showcase according to any one of claims 1 to 3, wherein the shelf brackets of the product display shelves arranged in the upper and lower stages are provided with a shelf angle adjusting mechanism for setting the shelf plate at an upward angle. Ceremony open showcase.