JP2018033817A - Open Showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent insects from entering a product display chamber when warm precooked food for example in place of refrigeration products is displayed in the product display chamber, in an open showcase provided with a function for forming a cool air curtain.SOLUTION: The open showcase includes: a body case 2 having a product display chamber 3 inside and having an opening 4 in the front face; a duct 6 that is formed along the inner peripheral face of the body case and that blows off cool air formed by a freezer 7; a cool air outlet 13 in which the cool air sent inside the duct blows off downward in a manner forming a cool air curtain A; and a room temperature air curtain unit 15 that is installed in the upper part of the body case and that sucks in air inside the chamber to blow off downward in a manner forming a room temperature air curtain B covering the opening. The position where the room temperature air curtain is formed is outside the position in which the cool air curtain is formed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an open showcase used for selectively displaying refrigerated goods or warm side dishes.

  Conventionally, in a store such as a supermarket or a convenience store, an open showcase having a main body case having a product display room and an opening in the front is used.

  As such an open showcase, a generally U-shaped duct is formed along the inner peripheral surface of the main body case, and cold air generated by the refrigeration apparatus is blown into the duct. The cold air blown into the duct is blown downward from the cold air outlet formed at the upper part on the near side of the duct to form a cold air curtain covering the opening, and the cold air blown from the cold air outlet is located at the lower part on the near side of the duct. It is sucked into the duct from the formed cold air inlet. And the refrigerated goods currently displayed in the goods display room are refrigerated by the cold air flowing through the cold air curtain and the duct.

  By the way, in a product display room of an open showcase equipped with such a refrigeration apparatus, there are cases in which hot vegetables or the like are displayed instead of refrigerated goods, and in that case, the refrigeration apparatus is stopped.

  When a hot sugar beet or the like is displayed in the product display room of the open showcase, there is a case where insects invited by the scent of the sugar beet enter the product display room.

  In order to prevent insects from entering the product display room, various components constituting the refrigeration system (a compressor that compresses the refrigerant, a condenser that condenses the compressed refrigerant, an expansion valve that adiabatically expands the condensed refrigerant, Of the evaporator that evaporates the expanded refrigerant, the fan that blows air toward the evaporator, etc., only the fan is driven, air at room temperature is blown into the duct, and the opening is covered with the room temperature air curtain Can be considered. However, in that case, since the insects swept away by the room temperature air curtain are sucked into the duct from the cold air inlet, there is a problem that it takes time to clean the insects sucked into the duct.

  Moreover, what was described in the following patent document 1 is known as an open showcase which prevented the entrance of the insect into the goods display room.

JP 2003-310397 A

  However, the open showcase described in Patent Document 1 is a type that does not have a refrigeration apparatus, and is premised on displaying products that do not need to be refrigerated in the product display room, for example, warm side dishes. In this open showcase, in order to prevent insects from entering the product display room, a blower is provided at the top of the case and covers the front opening of the open showcase by blowing indoor air from the blower. A room temperature air curtain is formed.

  Moreover, in this open showcase, the ventilation part is provided from the beginning which manufactured the open showcase, and it is not performed retrofitting the ventilation part for preventing the insect to enter into the commodity display room.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a refrigerated product in an open showcase having a function of forming a cold air curtain so that the refrigerated product can be displayed in a product display room. It is an object of the present invention to provide an open showcase that can prevent insects from entering the product display room when warm foods and the like are displayed in the product display room.

  An open showcase according to the present invention has a product display chamber inside, a main body case having an opening on the front surface, and an inner peripheral surface of the main body case, and the cool air generated by the refrigeration apparatus is blown A duct that is formed on the front upper side of the duct, and a cool air blowout port from which the cool air blown through the duct blows downward so as to form a cold air curtain covering the opening, and a front lower portion of the duct. A room temperature air curtain that is formed and is attached to the upper part of the main body case and cools air blown out from the cold air outlet, and sucks indoor air and covers the opening. A room temperature air curtain unit that blows downward so as to form a cold air curtain at a position where the room temperature air curtain is formed. Characterized in that it is positioned outside the position made.

  The room temperature air air curtain unit is preferably attached to the main body case so as to be retrofitted.

  Further, a power switch of the room temperature air curtain unit and a cooling / non-cooling changeover switch of the refrigeration apparatus are provided to be interlocked, and the power supply is switched when the cooling / non-cooling changeover switch is switched to the non-cooling state. Desirably, the switch is turned on.

  The room temperature air curtain unit preferably includes a wind speed adjusting unit that adjusts a wind speed of the room temperature air curtain.

  When a refrigerated product is displayed in the product display room, the refrigeration unit is driven to generate cold air, and the cold air is blown into the duct, and a cold air curtain that covers the opening with the cold air blown out from the cold air outlet is formed. Thus, the refrigerated product displayed in the product display room can be refrigerated. In addition, when warm side dishes etc. are displayed in the product display room, the driving of the refrigeration unit is stopped, the room temperature air curtain unit is driven, and room temperature air curtain is formed by blowing the room air downward and covering the opening. In addition, by making the position where the room temperature air curtain is formed outside the position where the cold air curtain is formed, it is possible to prevent the insects from entering the product display room and the insects from the cold air inlet. Inhalation into the duct can be prevented.

  The room temperature air curtain unit is attached to the main unit case so that it can be retrofitted. Therefore, the room temperature air curtain unit can be retrofitted to an existing open showcase that is already in use. By retrofitting the room temperature air curtain unit to the showcase, it is possible to prevent insects from entering the product display room even when warm food items are displayed in the product display room.

  Further, when the power switch of the room temperature air curtain unit and the cooling / non-cooling switching switch of the refrigeration apparatus are interlocked and the cooling / non-cooling switching switch is switched to the non-cooling state, the power switch is switched on. Therefore, when the cooling / non-cooling changeover switch of the refrigeration apparatus is switched to the non-cooling state in order to display warm vegetables etc. in the product display room, the power switch of the room temperature air curtain unit is switched on, The room temperature air air curtain unit is reliably driven, and insects can be prevented from entering the product display room.

  In addition, the room temperature air curtain unit has a wind speed adjustment unit that adjusts the wind speed of the room temperature air curtain. It is possible to prevent the insects from entering the product display room, and it is possible to more reliably prevent the insects from entering the product display room.

It is a section side view showing the whole open showcase composition of one embodiment of the present invention. It is a sectional side view which expands and shows the part of the room temperature air curtain unit in an open showcase.

  An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sectional side view showing the entire configuration of the open showcase 1, and FIG. 2 is an enlarged sectional side view showing a part thereof. This open showcase 1 has a main body case 2 made of a heat insulating member formed in a U-shaped cross-sectional shape, and a product display chamber 3 is formed inside the main body case 2, and the front side of the main body case 2 An opening 4 is formed in the. In the product display room 3, a plurality of product display shelves 5 on which products to be displayed are placed are arranged in the vertical direction.

  A substantially U-shaped duct 6 is formed inside the main body case 2 along the inner peripheral surface, and the cold air generated by the refrigeration apparatus 7 is blown in the duct 6 in the direction indicated by the arrow. It has become. The refrigerating apparatus 7 includes a compressor (not shown) that compresses the refrigerant, a condenser (not shown) that condenses the compressed refrigerant, an expansion valve (not shown) that adiabatically expands the condensed refrigerant, and adiabatic expansion. The evaporator 11 evaporates the refrigerant and the fan 12 for blowing air.

  A cold air outlet 13 is formed in the upper part on the near side of the duct 6 so that the cold air blown through the duct 6 blows downward as indicated by an arrow, and the cold air curtain covers the opening 4 with the cold air blown out from the cold air outlet 13. A is formed. A cold air inlet 14 is formed in the lower part on the near side of the duct 6 so that the cold air blown from the cold air outlet 13 is sucked into the duct 6.

  A room temperature air air curtain unit 15 is attached to the upper part of the main body case 2 so as to be retrofitted. This room temperature air curtain unit 15 sucks the air (room temperature air) in the room where the open showcase 1 is installed, blows out the sucked room temperature air downward, and forms a room temperature air curtain B that covers the opening 4 It is.

  The room temperature air air curtain unit 15 is located on the upper part of the main body case 2 and extends horizontally toward the front side of the main body case 2 and has a glass ceiling hood 16 whose tip is curved downward in an R shape. A fan case 18 containing a fan 17 for blowing air, and an air outlet 19 having one end connected to the fan case 18 and the other end extending along the upper surface of the ceiling hood 16 and opening downward at the tip thereof. And an air guide 20 made of acrylic. At the rear end of the fan case 18, when the room temperature air curtain unit 15 is attached to the upper part of the main body case 2, A hooking portion 21 for hooking is provided. When the fan 17 is driven, indoor air is sucked into the fan case 18, and the sucked air in the fan case 18 is blown through the air guide 20 as indicated by an arrow, and further downwards from the air outlet 19. To blow out. A room temperature air curtain B covering the opening 4 is formed by the air blown out from the air outlet 19. The position where the room temperature air curtain B is formed is outside the position where the cold air curtain A is formed, and the lower end portion of the room temperature air curtain B is a position where it does not enter the main body case 2. .

  In the present embodiment, the case where the glass ceiling hood 16 and the acrylic air guide 20 are used has been described as an example. However, the ceiling hood 16 and the air guide 20 are transparent and constant. What is necessary is just to be formed with the material which has intensity | strength. For example, the ceiling hood 16 may be made of acrylic and the air guide 20 may be made of glass, or both the ceiling hood 16 and the air guide 20 may be made of acrylic or glass.

  Further, the room temperature air air curtain unit 15 is provided with a power switch 22 for turning the room temperature air air curtain unit 15 on and off. This power switch 22 can be switched on and off independently, and is provided so as to interlock with a cooling / non-cooling switching switch (not shown) for turning on / off the refrigeration apparatus 7. When the non-cooling changeover switch is turned off (non-cooling state), the power switch 22 is turned on.

  Further, the room temperature air curtain unit 15 is provided with a wind speed adjusting unit 23 for adjusting the wind speed of the room temperature air curtain. The wind speed adjusting unit 23 is attached to the upper rear side of the fan case 18. Note that the mounting position of the wind speed adjusting unit 23 is not limited to the upper part on the rear side of the fan case 18 and may be a position where a customer who makes a purchase cannot easily touch, for example, a position away from the customer's passage. It may be a floor surface or the like.

  The room temperature air curtain unit 15 is provided with a filter 24 at a location where indoor air is sucked into the fan case 18 when the fan 17 is driven.

  In such a configuration, in the open showcase 1, the product displayed in the product display room 3 can be changed to a refrigerated product or a warm side dish as necessary.

  When the refrigerated product is displayed in the product display chamber 3, the refrigeration apparatus 7 is turned on by switching the cooling / non-cooling switch to the cooling state. When the refrigeration apparatus 7 is turned on, the refrigerant is compressed in the compressor, condensed in the condenser, and further expanded in the expansion valve and then evaporated in the evaporator 11. Then, when the refrigerant evaporates in the evaporator 11, cold air is generated in the duct 6, and the generated cold air is blown in the direction indicated by the arrow in the duct 6 by driving the fan 12. The cold air blown through the duct 6 is blown downward from the cold air outlet 13 to form a cold air curtain A covering the opening 4. And the refrigerated goods currently displayed in the goods display chamber 3 are refrigerated by this cold air curtain A and the cold air sent in the duct 6.

  Next, when displaying warm side dishes etc. in the product display room 3, the refrigeration apparatus 7 is turned off by switching the cooling / non-cooling switch to the non-cooling state, and the generation of cold air in the duct 6 is stopped. . Further, when the cooling / non-cooling switch is switched to the non-cooling state, the power switch 22 of the room temperature air curtain unit 15 is turned on, and the room temperature air curtain unit 15 is driven.

  By driving the room temperature air air curtain unit 15, indoor air is sucked into the fan case 18, and the sucked air is blown through the air guide 20, blown downward from the air outlet 19, and covers the opening 4. A room temperature air curtain B is formed.

  Here, when warm side dishes etc. are displayed in the merchandise display room 3, insects invited to the smell of the displayed side dishes gather. However, since the opening 4 is covered with the room temperature air curtain B, the collected insects can be prevented from entering the product display chamber 3 by the room temperature air curtain B. Further, the position where the room temperature air curtain B is formed is outside the position where the cold air curtain A is formed, and the lower end portion of the room temperature air curtain B does not enter the main body case 2. Therefore, it is possible to prevent the insects shed by the room temperature air curtain B from entering the duct 6 through the cold air inlet 14.

  Since the room temperature air curtain unit 15 is provided with a filter 24 at a location where indoor air is sucked into the fan case 18 when the fan 17 is driven, the room temperature air curtain B is formed by blowing from the outlet 19. The air to do is clean air. For this reason, it is possible to prevent the room temperature air curtain from containing dust and entering the product display chamber 3.

  The power switch 22 of the room temperature air curtain unit 15 and the cooling / non-cooling switching switch of the refrigeration apparatus 7 are interlocked, and the power switch 22 is turned on when the cooling / non-cooling switching switch is switched to the non-cooling state. It is done. For this reason, when the cooling / non-cooling change-over switch of the refrigeration apparatus 7 is switched to the non-cooling state in order to display warm vegetables or the like in the product display room 3, the power switch 22 of the room temperature air curtain unit 15 is switched. Is switched on, the room temperature air air curtain unit 15 can be reliably driven, and insects can be reliably prevented from entering the product display chamber 3.

  Further, since the room temperature air curtain unit 15 includes a wind speed adjusting unit 23 that adjusts the wind speed of the room temperature air curtain B, the flow rate of the room temperature air curtain B is adjusted, and a customer who wants to purchase a product is recommended. To avoid discomfort. In addition, by adjusting the flow rate of the room temperature air curtain B according to the type of insects near the open showcase 1, insects can be more reliably prevented from entering the product display chamber 3. .

  Moreover, since the room temperature air air curtain unit 15 is attached to the main body case 2 so as to be retrofitted, the room temperature air air curtain unit 15 can be retrofitted to an existing open showcase that has already been used. For this reason, by installing the room temperature air curtain unit 15 in the existing open showcase, it is possible to enter the product display room 3 even when warm vegetables are displayed in the product display room 3 of the existing open showcase. It becomes possible to prevent the insects from entering.

DESCRIPTION OF SYMBOLS 1 Open showcase 2 Main body case 3 Commodity display room 4 Opening 5 Commodity display shelf 6 Duct 7 Refrigeration apparatus 11 Evaporator 12 Fan 13 Cold air outlet 14 Cold air inlet 15 Room temperature air air curtain unit 16 Ceiling hood 17 Fan 18 Fan case 19 Air outlet 20 Air guide 21 Hook 22 Power switch 23 Air speed adjuster 24 Filter A Cold air curtain B Room temperature air air curtain
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Claims (4)

A main body case having a product display room inside and an opening in the front;
A duct that is formed along the inner peripheral surface of the main body case and that blows cool air generated by a refrigeration apparatus;
A cold air outlet that is formed on the upper front side of the duct and blows downward so that the cold air blown through the duct forms a cold air curtain that covers the opening;
A cold air inlet that is formed in the lower part on the near side of the duct, and the cold air blown out from the cold air outlet is sucked into the duct;
A room temperature air curtain unit attached to the upper part of the main body case, for sucking indoor air and blowing the air downward so as to form a room temperature air curtain covering the opening;
Have
The open showcase characterized in that a position where the room temperature air curtain is formed is outside a position where the cold air curtain is formed.   The open showcase according to claim 1, wherein the room temperature air curtain unit is attached to the main body case so as to be retrofitted.   A power switch of the room temperature air curtain unit and a cooling / non-cooling switching switch of the refrigeration apparatus are provided so as to be interlocked, and the power switch when the cooling / non-cooling switching switch is switched to a non-cooling state. The open showcase according to claim 1 or 2, characterized in that is switched on.   4. The open showcase according to claim 1, wherein the room temperature air curtain unit includes a wind speed adjusting unit that adjusts a wind speed of the room temperature air curtain. 5.

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