JP4532147B2 - Open showcase - Google Patents

Description

  The present invention comprises a storage chamber having an opening for taking out goods on the front surface, and a top plate that forms the upper portion of the storage chamber, and is directed from a blowout port provided at the upper portion of the opening to a suction port provided at the lower portion of the opening. This is related to an open showcase that blows out cold air.

  In a conventional open showcase, a storage room having an opening for taking out goods is provided, and a blower and an evaporator are disposed in a ventilation path formed between the outer box and the inner box. By this blower, air is taken in from a suction port provided in the lower part of the opening and cooled by an evaporator.

  The air curtain (cold air layer) is formed on the front surface of the opening by blowing out as cool air from the air outlet provided at the upper part of the opening, blocking heat from the outside, Keeping the temperature constant keeps the product cold. (For example, refer to Patent Document 1).

JP 2003-275069 A (paragraphs 0010 to 0013, FIG. 1)

  However, in Patent Document 1, since the front surface of the storage room is always open, cold air is circulated to keep the temperature in the storage room constant even during the business hours. It was necessary and the cost of power consumption accompanying the circulation of cold air was high.

  The present invention has been made paying attention to such problems, and during the business hours, the temperature of the storage room is kept constant as in the business hours, while the power consumption associated with the circulation of cold air is reduced. The purpose is to provide an open showcase with reduced costs.

In order to solve the above-mentioned problems, an open showcase according to claim 1 of the present invention comprises a storage room having an opening for taking out goods on the front surface, and a top plate forming the upper part of the storage room, In the open showcase that blows out cold air from the air outlet provided in the opening toward the suction port provided in the lower part of the opening, the top plate is a fixed top plate and a movable top plate that is movable forward with respect to the fixed top plate And a storage part for storing a night cover having a locking tool at one end is provided on the front side of the suction port, and a locking piece for locking the locking tool is provided at the front end of the movable top plate. It is characterized by that.
According to this feature, it is possible to shut off the heat from the outside on the upper side of the opening just by moving the movable top plate forward at the end of business, and the cooling effect in the storage chamber can be enhanced. The cost of power consumption associated with the circulation of cold air during the time zone can be reduced. Moreover, it can be stored in its original position by simply moving the movable top plate backward at the start of business, and there will be no trouble when taking out and storing the product in the storage room. Furthermore, when the movable top plate is pulled out forward at the end of business, the night cover is lifted from the storage section, and the latch of the night cover is locked to the locking piece of the movable top plate. The front of the opening of the storage room can be covered in a state where contact is prevented, and the leakage of cold air to the outside of the storage room is prevented, so that the cooling effect of the product is further enhanced and consumption associated with the circulation of cold air The cost of electric power can be suppressed.

An open showcase according to a second aspect of the present invention is the open showcase according to the first aspect, wherein the front end portion of the movable top plate is inclined forward and directed downward.
According to this feature, by tilting the front end of the movable top plate downward and forward, the cold air from the blowout port flows down more intensively toward the suction port, and external heat enters the storage chamber. Can be blocked so that there is no.

The open showcase according to claim 3 of the present invention is the open showcase according to claim 1 or 2 , wherein a tension member is provided at an end portion of the night cover having the locking tool. Yes.
According to this feature, by providing a tension member at the end of the night cover, it is possible to prevent the night cover from being loosened by the tension member when the locking tool is locked to the locking piece, and the front surface of the opening. Can be reliably covered.

  Examples of the present invention will be described below.

  1 is a side view showing an entire image of an open showcase (hereinafter referred to as showcase 1) in Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 2 is a cross-sectional view taken along line BB in FIG. 2, FIG. 4 is an enlarged cross-sectional view of a main part showing a night cover stretch structure, and FIG. 5 shows a state where the night cover is stretched on the showcase 1. It is a perspective view. The showcase 1 is installed in a grocery store such as a department store or a supermarket, and mainly stores products that need to be kept cold (not shown in the present embodiment).

  Referring to FIG. 1, the embodiment of the present invention will be described. The showcase 1 is provided with a base 2 made of a metal plate on the floor and a side where a part of a transparent glass material is used on both sides. A face plate 15 is provided, a top plate is provided on the top, and a movable top plate 16 described in detail later is shown in the figure. Inside the base 2, the side plate 15, and the top plate, a heat-insulating inner box 4 is provided, and a storage chamber 8 having an open front is formed.

  A plurality of brackets 13 (three pairs in this embodiment) are attached to both ends of the inner box 4 in the vertical direction, and a tray 14 is attached to the lowermost stage. A shelf plate 12 is placed and fixed at each bracket 13. A product 27 is stored in each of the shelf plates 12 and the trays 14 provided in multiple stages. Hereinafter, in this embodiment, the front side of the showcase 1 will be referred to as the front, the back side of the showcase 1 will be referred to as the rear, the left side plate 15 side will be described as the left side, and the right side plate 15 side will be described as the right side.

  Next, the internal structure of the showcase 1 will be described. As shown in FIG. 2, a heat insulating outer box 3 having a front upper surface opened is placed on a base 2, and the inner box 4 is provided at a distance from the inner box 4. Between 3 and the inner box 4, a ventilation path 5, which is a cold air circulation path, is formed.

  A storage chamber 8 is formed in the front space in the inner box 4, and each shelf board 12 and tray 14 are provided at a predetermined height position, so that the display shelves for goods are multi-staged (four-stage type in this embodiment). Is provided. The evaporator 7 is installed in the ventilation path 5 located between the outer box 3 and the inner box 4, and the air blower 9 is provided in the upstream.

  A fixed top plate 17, which is a part of the top plate, is provided at the upper ends of the outer box 3 and the inner box 4. A movable top plate 16 which is a part of the top plate is provided on the fixed top plate 17, and a front end portion 16a of the movable top plate 16 is inclined forward and downward. A hook-shaped locking piece 23 is attached to the back surface of the front end portion 16a with a screw (not shown).

  A suction port 11 communicating with the inside of the ventilation path 5 is provided at an upper end portion in front of the inner box 4, and an air outlet 6 communicating with the inside of the ventilation path 5 is formed at an upper end portion of the rear side of the ventilation path 5. Yes. That is, an air flow path that surrounds the storage chamber 8 is formed by the suction port 11 and the air outlet 6.

  Between the front side of the suction port 11 and the front end of the outer box 3, a night cover storage portion 24 having an upper opening is formed, and a rotary shaft having an automatic winding function over the left and right end portions of the storage portion 24. 21 is extended. The film-shaped night cover 20 is stored on the rotating shaft 21 in a wound state. A tension member 20b extending in the left-right direction is attached to the upper end of the night cover 20, and a locking tool 20a is provided at the upper end of the tension member 20b.

  Next, the air flow path circulating in the showcase 1 will be described. First, air is taken in from the suction port 11 by the suction rotation of the blower 9 and sent into the ventilation path 5, and the air flows toward the evaporator 7. Then, the air is cooled by the liquid refrigerant circulated in the coil 7 a communicated with the evaporator 7 to become cold air, and the cold air is sent into the storage chamber 8 from the outlet 6 along the ventilation path 5.

  This cool air cools the product (not shown) placed on the shelf 12 and the tray 14, and a part of the cool air is sucked again from the suction port 11, so that the air curtain extends from the outlet 6 to the suction port 11. 10 is formed to block heat from the outside. In this manner, a cold air circulation path is formed in the storage chamber 8 and the ventilation path 5. The temperature in the storage chamber 8 is detected by a heat sensor (not shown) installed in the storage chamber 8 and is temperature-controlled so that the room temperature in the storage chamber 8 is always appropriate.

  Note that the front end portion 16a of the movable top plate 16 is inclined forward toward the lower side, so that the cold air blown out from the air outlet 6 flows down more intensively toward the suction port 11 and the opening of the storage chamber 8 is opened. The air curtain 10 is formed at the position, and external heat is blocked by the air curtain 10 formed in the opening of the storage chamber 8.

  The fixed top plate 17 and the movable top plate 16 will be specifically described. As shown in FIG. 3, a groove 17 b is formed at the upper end near the both ends of the fixed top plate 17 from the front to the rear. Engagement recesses 19 extending forward and backward by bending the metal plate are fitted into the groove 17 b and fixed to the fixed top plate 17 with screws 26.

  At the lower end near the both ends of the movable top plate 16, an engaging projection 18 extending forward and backward by bending the metal plate is fixed with a screw 26. The movable top plate 16 is attached to the fixed top plate 17 by the engagement of the engaging concave strips 19 and the engaging convex strips 18 so that the movable top plate 16 can be pulled out while sliding forward. Note that the forward movement restriction range of the movable top plate 16 is appropriately set depending on the lengths of the front and rear of the grooves 17b formed in the fixed top plate 17.

  As described above, even when the product 27 is taken in and out of the storage room 8, the air curtain 10 keeps the temperature in the storage room 8 constant by the air curtain 10, and the use form of the showcase 1 in the business hours when the product 27 can be kept cold. However, after the end of business, in order to minimize the cost of power consumption associated with the circulation of cold air, the usage form of the showcase 1 during the business end time will be described below.

  As shown in FIG. 4, by pulling the movable top 16 forward (in the direction of the arrow) at the end of business, heat from the outside on the upper side of the opening of the storage chamber 8 can be shut off during the business end time. The cooling effect in the storage chamber 8 can be enhanced, and the cost of power consumption accompanying the circulation of cold air can be suppressed.

  Further, the latching tool 20 a housed on the front side of the suction port 11 is pulled upward to pull the night cover 20 upward from the housing portion 24, and the latching tool 20 a is hooked on the latching piece 23 of the movable top plate 16. By stopping, the front surface of the opening of the storage chamber 8 is covered.

  Note that the shelf 12 is multi-staged so as to incline backward from the bottom shelf 12 toward the top shelf 12 so that the product can be easily taken out from the outside as in the case 1 of the present embodiment. 2 (see FIG. 2), since the movable top plate 16 is drawn forward, the night cover 20 covered on the front surface of the opening of the storage chamber 8 and each shelf 12 Contact with a stored product (not shown) is prevented.

  Then, as shown in FIG. 5, the entire night cover 20 is prevented from slackening by the tension member 20 b attached to the upper end of the night cover 20, and the storage chamber 8 is hardly formed between the side plates 15. Since the front surface of the opening can be covered, leakage of cold air to the outside of the storage chamber 8 is prevented, and the cooling effect of the product 27 can be further enhanced.

  As described above, in the first embodiment, the power consumption cost associated with the circulation of the cold air can be further reduced in the first working hours while keeping the temperature of the storage chamber 8 constant as in the business hours. .

  At the start of business, the night cover 20 is automatically wound by the automatic winding function of the rotary shaft 21 by simply removing the locking member 20a from the locking piece 23, and is stored in the storage unit 24 and pulled out to the front. Since the movable top plate 16 can be stored in the original position simply by moving it backward, there is no problem in taking out and storing the product 27 without disturbing the cooling in the storage room 8 during business hours. Absent.

  Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 6 is an enlarged cross-sectional view showing a main part of a night cover tension structure. In the following second embodiment, the same structural parts as those of the first embodiment will be denoted by the same reference numerals, and detailed description thereof will be omitted.

  As shown in FIG. 6, a storage box 25 corresponding to a storage unit is provided at the front end portion 16 a of the movable top plate 16 provided at the upper part of the showcase 1 ′ and capable of moving forward. A rotating shaft 21 ′ having an automatic winding function of the night cover 20 ′ is extended to the left and right ends, and the night cover 20 ′ is wound around the rotating shaft 21 ′ during business hours, although not particularly illustrated. It is in a state of being stored in the storage box 25. The storage box 25 is configured such that an opening is formed in the lower part and the night cover 20 'can be pulled out downward.

  A hook-shaped locking piece 23 ′ is attached to the front side of the suction port 11 with a screw (not shown). A tension member 20b 'extending in the left-right direction is attached to the lower end of the night cover 20', and a locking tool 20a 'is provided at the lower end of the tension member 20b'.

  Therefore, the usage pattern of the showcase 1 ′ during the business ending time zone will be described. First, the movable top plate 16 is pulled forward at the time of business ending, the locking tool 20 a ′ is pulled down from the storage box 25 side, and the night cover 20 Pull 'down. Then, the product (not shown) in the storage chamber 8 is brought into contact with the night cover 20 ′ by hooking the locking tool 20a ′ on the locking piece 23 ′ provided on the front side of the suction port 11 and locking it. The front surface of the opening of the storage chamber 8 is covered in a state where it has been prevented.

  According to the above description, in the second embodiment, the night cover 20 ′ drawn out from the storage box 25 that is a storage portion prevents the cold air from leaking to the outside of the storage chamber 8. Similarly, the cooling effect of goods can be enhanced and the cost of power consumption accompanying the circulation of cold air can be suppressed.

  As described above, the first and second embodiments of the present invention have been described with reference to the drawings. However, the specific configuration is not limited to these embodiments, and the present invention can be changed or added without departing from the scope of the present invention. In the first and second embodiments, for example, the movable top plate 16 is attached to the upper portion of the fixed top plate 17 so as to be movable forward. However, the present invention is not limited to this, If the movable top plate 16 can be moved forward at the end, the movable top plate 16 may be attached to the lower part of the fixed top plate 17.

  Further, by configuring the night cover 20 of the above embodiment with a permeable film, the product 27 stored in the storage chamber 8 is visually recognized from the outside of the night cover 20 so as to grasp the stock status of the product 27. Anyway.

  Furthermore, the night cover is not necessarily limited to a configuration in which the night cover is housed and pulled out during use, but the night cover may be hung on the tip of the movable top plate moved forward and hung downward.

It is a perspective view which shows the whole image of the open showcase in Example 1 of this invention. It is sectional drawing of the AA line of FIG. It is sectional drawing of the BB line of FIG. It is a principal part expanded sectional view which shows the tension structure of a night cover. It is a perspective view which shows the state which stretched the night cover on the open showcase. It is a principal part expanded sectional view which shows the tension structure of the night cover in Example 2 of this invention.

Explanation of symbols

1, 1 'showcase (open showcase)
2 Base 3 Outer box 4 Inner box 5 Ventilation path 6 Air outlet 7 Evaporator 7a Coil 8 Storage room 9 Blower 10 Air curtain (cold air layer)
11 Suction port 12 Shelf plate 13 Bracket 14 Tray 15 Side plate 16 Movable top plate (part of top plate)
16a Front end 17 Fixed top (part of top)
17b groove 18 engaging protrusion 19 engaging groove 20, 20 'night cover 20a, 20a' locking tool 20b, 20b 'tension member 21, 21' rotating shaft (with built-in automatic winding spring)
23, 23 'Locking piece 24 Storage part 25 Storage box 26 Screw 27 Product

Claims (3)

A storage room having an opening for taking out goods on the front surface and a top plate forming the upper part of the storage room are provided, and cold air is blown out from the air outlet provided at the upper part of the opening toward the air inlet provided at the lower part of the opening. in the open showcase, the top plate is a stationary top plate, constituted by the movable top plate that can move forward with respect to said fixed top plate, the front side of the suction port, a night cover having a locking device on one end An open showcase characterized in that a storage portion for storing is provided and a locking piece for locking the locking tool is provided at a front end portion of the movable top plate .   The open showcase according to claim 1, wherein a front end portion of the movable top plate is inclined forward and directed downward. The open showcase according to claim 1 or 2 , wherein a tension member is provided at an end portion of the night cover having the locking member.

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