JPH1163774A - Showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lightweight showcase in which vibration and noise are reduced. SOLUTION: The air is sucked from an article containing room 1a into a first duct 3 through an air suction port 3a and passed on one heat transfer surface side of each heat-exchanger 2 before being delivered into the article containing room 1a through each air delivery port 3b. On the other hand, outer air is sucked into a second duct 4 through an air suction port 4a and passed on the other heat transfer surface side of each heat-exchanger 2 before being delivered to the outside through each air delivery port 4b. In this regard, heat absorbing and radiating function is provided by the electronic cooling elements 2a of each heat-exchanger 2 and the air in the first duct 3 is delivered into the article containing room 1a while being cooled or heated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a showcase installed in a retail store or a restaurant.

[0002]

2. Description of the Related Art Conventionally, relatively small showcases have been installed at counters of retail stores and restaurants, for example, to store products such as western confectionery. As this type of showcase, as in the case of a normal-sized showcase, a known refrigerator that circulates refrigerant by a compressor is used, and the refrigerator is used to cool the product storage room. is there.

[0003]

However, in the conventional showcase, since vibration and noise are generated by the compressor of the refrigerator, when the refrigerator is installed at a store counter or the like, the service to the store customers is reduced and the cooling is performed. There has been a problem that the equipment has become heavy and is not suitable for installation on a counter or the like.

[0004] The present invention has been made in view of the above problems, and an object of the present invention is to provide a showcase that can reduce vibration and noise and reduce weight.

[0005]

According to the present invention, in order to achieve the above object, according to the first aspect, a showcase main body having a product storage room, a heat exchanger including an electronic cooling element, and a product storage room are faced. A first duct having an air inlet and an air outlet, and having one heat transfer surface side of the heat exchanger disposed on the air inlet side of the air outlet, an air inlet and air facing the outside of the product storage chamber; A second duct having a discharge port, and the other heat transfer surface side of the heat exchanger disposed on the air inflow side of the air discharge port; a first blower for flowing air through the first duct; And a second blower that circulates air through the duct. Thereby, the air in the product storage room is sucked into the first duct from the air suction port, flows through one of the heat transfer surfaces of the heat exchanger, and is discharged from the air discharge port into the product storage room. Also,
Outside air is sucked into the second duct from the air suction port, flows through the other heat transfer surface side of the heat exchanger, and is discharged to the outside from the air discharge port. At that time, the heat absorption and heat dissipation effects occur on each heat transfer surface side by the electronic cooling element of each heat exchanger,
The air in the first duct is cooled or heated and discharged into the product storage room.

According to a second aspect of the present invention, in the showcase of the first aspect, a plurality of air outlets are provided for each of the heat exchanger and each duct, and in each duct, circulating air is supplied to each heat exchanger side. An air guide member for diverting and guiding is provided. Thereby, in addition to the effect of the first aspect, the circulating air in each duct is uniformly circulated to each heat exchanger side by the air guide member.

According to a third aspect of the present invention, in the showcase of the first or second aspect, there is provided switching means for switching each heat transfer surface of the heat exchanger between a heat absorbing side and a heat radiating side. Thus, in addition to the function of the first or second aspect, by switching each heat transfer surface of the heat exchanger between the heat absorbing side and the heat radiating side, the heat exchanger heats and cools and heats the product storage chamber arbitrarily.

[0008]

1 to 7 show an embodiment of the present invention. FIG. 1 is an overall perspective view of a showcase, FIG. 2 is a side sectional view thereof, and FIG. 3 is a perspective view of a heat exchanger. FIG. 4 is a schematic front view of the showcase, FIG. 5 is a schematic plan view of the first duct, FIG. 6 is a schematic plan view of the second duct, and FIG. 7 is a circuit configuration diagram of the showcase.

This showcase includes a showcase body 1 having an open front and a back, a plurality of heat exchangers 2 for cooling or heating the inside of the showcase body 1, and one heat transfer surface side of each heat exchanger 2. And a second duct 4 disposed on the other heat transfer surface side of each heat exchanger 2.
And a first blower 5 that circulates air through the first duct 3
And a second blower 6 that circulates air through the second duct 4.

The showcase body 1 has a product storage room 1 inside.
a, a plurality of sliding doors 1b are provided on the front and back of the showcase body 1 to open and close the product storage room 1a. A machine room 1c is provided at one end in the width direction of the showcase body 1.

Each heat exchanger 2 includes a well-known electronic cooling element 2a composed of a Peltier element or the like, and a pair of fins 2b respectively attached to one heat transfer surface and the other heat transfer surface of the electronic cooler 2a. That is, by applying a voltage to the electronic cooling element 2a, heat is transferred from one of the heat transfer surfaces to the other. The heat exchangers 2 are provided on the upper part of the showcase main body 1 and are arranged at an interval in the width direction of the showcase main body 1. The electronic cooling element 2a of each heat exchanger 2 has a polarity power source 2 as shown in FIG.
and a switch 2d of a well-known configuration for switching the polarity of the voltage applied to the electronic cooling element 2a.

The first duct 3 is provided from one end in the width direction of the product storage room 1a to the upper surface side, and one end in the width direction is arranged on the machine room 1c side. The first duct 3 has an air inlet 3a and a plurality of air outlets 3b facing the interior of the product storage room 1a. The air intake 3a is provided on one side in the width direction of the product storage room 1a via the machine room 1c. It is open. Each air discharge port 3b is provided on the upper surface side of the product storage room 1a, and is arranged at an interval in the width direction of the product storage room 1a. In this case, each heat exchanger 2 is provided inside the first duct 3.
Fins 2b on one side of the heat transfer surface are accommodated,
b is arranged on the air inflow side of each air discharge port 3b. In the first duct 3, an air guide plate 3c that partitions the inside into a plurality of flow paths is provided, and the air guide plate 3c divides and guides the air in each flow path to each heat exchanger 2 side. It is formed as follows.

The second duct 4 is provided from one end in the width direction of the showcase main body 1 to the upper surface side, and one end in the width direction is disposed on the machine room 1c side. In this case, the second duct 4 is formed along and above the first duct 3. The second duct 4 has an air inlet 4a facing the outside of the showcase body 1 and a plurality of air outlets 4b, and the air inlet 4a is connected to the showcase body 1 via the machine room 1c.
Is opened on one side in the width direction. The air discharge ports 4b are provided on the upper surface side of the showcase main body 1 and are arranged at an interval in the width direction of the showcase main body 1. In this case, the fins 2b on the other heat transfer surface side of each heat exchanger 2 are accommodated inside the second duct 4, and each fin 2b is arranged on the air inflow side of each air discharge port 4b. . In the second duct 4, an air guide plate 4c that partitions the inside into a plurality of flow paths is provided, and the air guide plate 4c divides and guides the air in each flow path to each heat exchanger 2 side. It is formed as follows.

The first blower 5 is provided in the machine room 1b, and is arranged at one end of the first duct 3.

The second blower 6 is provided in the machine room 1b, and is arranged at one end of the second duct 4.

In the showcase constructed as described above, the air in the product storage room 1a is sucked into the first duct 3 from the air suction port 3a, and one of the heat exchangers 2 on the side of the heat transfer surface. Fin 2b, and is discharged from each air discharge port 3b into the product storage chamber 1a. Outside air is sucked into the second duct 4 from the air suction port 4a, flows through the fins 2b on the other heat transfer surface side of each heat exchanger 2, and is discharged from each air discharge port 4b to the outside. Is done. At this time, each heat exchanger 2 is arranged such that one heat transfer surface (the first duct 3 side) of each heat exchanger 2 is on the heat absorption side and the other heat transfer surface (the second duct 4 side) is on the heat radiation side. 2 by applying a voltage to the electronic cooling element 2a, the air flowing through the first duct 3 is
Is cooled by the heat absorbing action of one of the heat transfer surfaces, and the inside of the product storage room 1a is cooled by the cooling air. In this case, the other heat transfer surface side of each heat exchanger 2 is cooled by the air in the second duct 4, and the heat absorbed in each heat exchanger 2 from the first duct 3 side is transferred to the second duct 4. It is released outside through the air inside. Further, the changeover switch 2d allows one of the heat transfer surfaces (the first duct 3 side) of each heat exchanger 2 to be on the heat dissipation side and the other heat transfer surface (the second duct 4 side) to be the heat absorption side. By switching the polarity of the voltage applied to the electronic cooling element 2 a of each heat exchanger 2, the air flowing through the first duct 3 is heated by the heat radiation effect on one heat transfer surface side of each heat exchanger 2. The heated air causes the product storage room 1a
The inside is heated. In this case, heat is absorbed from the air in the second duct 4 to the other heat transfer surface side of each heat exchanger 2, and the absorbed heat is transferred to the air in the first duct 3 through each heat exchanger 2. Will be released.

As described above, according to the showcase of the present embodiment, the inside of the product storage room 1a is cooled or heated by the plurality of heat exchangers 2 using the electronic cooling elements 2a. Vibration and noise can be significantly reduced and weight can be reduced as compared with a refrigerator using a refrigerator. In addition, since the air in each duct 3 is divided and guided to each heat exchanger 2 by the air guide plates 3c and 4c, the air can be uniformly circulated through each heat exchanger 2. The cooling and heating efficiency in the storage chamber 1a can be improved. Further, since the polarity of the voltage applied to the electronic cooling element 2a is configured to be switchable by the changeover switch 2d, the interior of the product storage room 1a can be arbitrarily cooled and heated by each heat exchanger 2, and the showcase can be constructed. If necessary, it can be used for refrigeration or warm storage.

[0018]

As described above, according to the showcase of the first aspect, vibration and noise can be greatly reduced and the weight can be reduced as compared with the conventional case using a refrigerator. This is advantageous not only for installation at a counter of a restaurant or the like, but also for installation on a normal-sized showcase in a retail store or the like.

Further, according to the showcase of claim 2,
In addition to the effect of the first aspect, since air can be uniformly circulated through each heat exchanger, cooling and heating efficiency of the product storage room can be improved.

Further, according to the showcase of claim 3,
In addition to the effect of the second aspect, since the product storage room can be arbitrarily cooled and heated, the showcase can be used for refrigeration or warm storage as required.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a showcase showing one embodiment of the present invention.

FIG. 2 is a side sectional view of a showcase.

FIG. 3 is a perspective view of a heat exchanger.

FIG. 4 is a schematic front view of a showcase.

FIG. 5 is a schematic plan view of a first duct.

FIG. 6 is a schematic plan view of a second duct.

FIG. 7 is a circuit configuration diagram of a showcase.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Showcase main body, 1a ... Product storage room, 2 ... Heat exchanger, 2a ... Electronic cooling element, 2d ... Changeover switch, 3 ... First duct, 3a ... Air intake port, 3b ... Air discharge port, 3
c ... air guide plate, 4 ... second duct, 4a ... air intake port, 4b ... air discharge port, 4c ... air guide plate, 5 ... first blower, 6 ... second blower.

Claims (3)

[Claims] 1. A showcase body having a product storage room, a heat exchanger including an electronic cooling element, and an air intake port and an air discharge port facing the product storage room,
A first duct in which one heat transfer surface side of the heat exchanger is arranged on the air inlet side of the air discharge port, and an air suction port and an air discharge port facing the outside of the product storage room; A second duct in which the other heat transfer surface side of the heat exchanger is arranged on the inflow side, a first blower that circulates air through the first duct, and a second blower that circulates air through the second duct And a showcase comprising: 2. The air conditioner according to claim 1, wherein a plurality of air outlets are provided for each of the heat exchanger and each duct, and an air guide member is provided in each duct to circulate and guide the circulating air to each heat exchanger. The showcase according to claim 1, wherein: 3. The showcase according to claim 1, further comprising switching means for switching each heat transfer surface of the heat exchanger between a heat absorbing side and a heat radiating side.