JP2014025669A - Showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a showcase excellent in energy saving, allowing when arranging a tall compressor, to arrange in a machine room below an adiabatic wall in a showcase body, and free from reducing the height of a commodity storage so as not to reduce stored commodities.SOLUTION: A showcase is formed by dividing the inside of a showcase body 1 having an opening 2 for taking in and out a commodity on the front face and formed by a cross section nearly U-shaped adiabatic wall 1a into a commodity storage 4 and a cold air circulation duct 5 by a duct plate 3, arranging a cooler 9 in the cold air circulation duct 5, forming the bottom edge of the cold air circulation duct 5 as an air inlet port 6, and the top edge thereof as a cold air outlet 7, forming a cold air curtain on the opening 2 by cold air blown out from the outlet 7 to cool the commodity storage 4 and prevent outside air from invading into the storage. In a machine room 13 formed on the lower part of the adiabatic wall 1a, the bottom of the adiabatic wall 1a is raised so as to raise part of a showcase body back side where there is the cold air circulation duct 5, and a tall compressor 14 is installed thereon.

Description

  The present invention relates to a showcase comprising a machine room in which a compressor, a condenser, a condenser blower, and the like are installed at the lower part of the showcase body.

As shown in the following patent document, a multi-stage open showcase as a representative example of a showcase has an opening 2 for putting in / out a product on the front surface as shown in FIG. The interior of the showcase body 1 formed by the U-shaped heat insulating wall 1a is partitioned into a product storage 4 and a cold air circulation duct 5 by a duct plate 3, and a cooler 9 is disposed in the cold air circulation duct 5. The lower end of the cool air circulation duct 5 is formed at the air inlet 6 and the upper end is formed at the cool air outlet 7. The cool air blown out from the outlet 7 forms a cool air curtain in the opening 2 to cool the inside of the product storage 4. In addition, it prevents outside air from entering the cabinet.
JP 2004-101131 A

  A plurality of display shelves 10 are provided in the product storage 4 in the vertical direction, and a lower duct 12 that communicates with the cooler circulation duct 5 and constitutes a part of the cooler circulation duct 5 is provided below the deck pan 11. It is configured. The lower duct 12 is provided with an internal fan 8 for circulating cold air located below the deck pan 11.

  On the other hand, in the showcase body 1, a machine room 13 is formed below the heat insulating wall 1 a, and a compressor 14, a condenser 15, a condenser blower 16, and the like that constitute a part of the refrigerant circuit of the cooling device together with the cooler 9. And an electrical box for controlling the operation of the accumulator and the showcase are also installed.

  Furthermore, in order to evaporate the drain water dripped from the cooler 9 between the compressor 14 and the condenser blower 16, a drain evaporator 17 using an evaporating dish 17b having a plurality of evaporating plates 17a is also installed.

  When the condenser blower 16 is operated, the outside air is sucked into the machine room 13 from the outside air inlet provided on the front side of the machine room 13, is ventilated to the condenser 15, and is air cooled through the condenser 15. After passing through the evaporating dish 17b, it is ventilated to the compressor 14 and then discharged outside the machine room 13.

  In recent years, COP (Coefficient Of Performance) [coefficient of performance (operation coefficient), a coefficient for checking the energy consumption efficiency of an air-conditioning appliance, a cooling capacity for power consumption of 1 kW, a value indicating a heating (heating) capacity] It has been screamed and adopted in the Energy Saving Law.

As a high COP compressor, a compressor using CO ₂ which is a natural refrigerant is suitable, but the refrigerant reaches a supercritical pressure as compared with a compressor having the same performance as a conventional chlorofluorocarbon or hydrocarbon refrigerant. Therefore, pressure resistance and sealing performance are further required, and the apparatus is inevitably increased in size and becomes a tall compressor.

  As described above, the compressor 14, the condenser 15, the condenser blower 16, and the like that constitute a part of the refrigerant circuit of the cooling device are installed in the machine room 13. When the compressor 14 is installed, The height has a trade-off relationship with the height of the commodity storage 4.

Therefore, the high COP CO ₂ compressor to be adopted is a tall compressor, so the space in the machine room is deprived in mounting, but the compressor 14 can be mounted side by side, It was necessary to reduce the height of the product storage 4 or to arrange a compressor unit on the showcase ceiling.

  The object of the present invention is to eliminate the inconvenience of the conventional example, and without reducing the height of the product storage, a tall compressor can be arranged in the machine room below the heat insulating wall in the showcase body, The aim is to provide a showcase with excellent energy savings without reduction.

  In order to achieve the above object, the present invention as claimed in claim 1 is characterized in that the inside of the showcase body, which is formed by a heat insulating wall having a substantially U-shaped cross section, has an opening for putting in and out the product on the front surface, and a product storage with a duct plate. The cool air is divided into a cool air circulation duct, a cooler is disposed in the cool air circulation duct, the lower end of the cool air circulation duct is formed as an air inlet, and the upper end is formed as a cold air outlet. In the showcase that forms a cold air curtain in the opening to cool the inside of the product storage and prevents the outside air from entering the storage, the machine room formed in the lower part of the heat insulating wall is located on the back side of the showcase body with the cold air circulation duct The gist is to raise the heat insulation wall so that it is partly high, and to install a tall compressor here.

  According to the first aspect of the present invention, in the box body of the heat insulating wall constituting the commodity storage of the showcase, the machine room raises the heat insulating wall so that the rear side of the showcase main body with the cold air circulation duct is partially raised. Since the box structure that secures the upper portion of the tall compressor to be mounted in the height direction is provided, the tall compressor can be disposed without reducing the product accommodation volume of the product storage.

  According to the second aspect of the present invention, the blower, the condenser, and the evaporator installed in the machine room are arranged on a base plate that is slidable in the front-rear direction, and can be pulled out while leaving the tall compressor. It is a summary.

  According to the second aspect of the present invention, the blower, the condenser, and the evaporator installed in the machine room can be drawn out leaving the tall compressor, so that the drain water is accumulated in the evaporating dish and the amount thereof is constant. When the water level sensor is activated at the water level, it can be pulled out and drained, and the maintainability of the evaporator can be ensured.

  As described above, the showcase of the present invention can be installed in the machine room below the heat insulating wall in the showcase body to arrange the tall compressor, and reduce the height of the product storage. Because there is no, there is no reduction in the number of goods contained, and it is excellent in energy saving.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a longitudinal side view showing an embodiment of a showcase of the present invention. The interior of a showcase main body 1 is formed by a heat insulating wall 1a having a product opening / closing opening 2 on the front surface and a substantially U-shaped cross section. Is partitioned into a product storage 4 and a cold air circulation duct 5 by a duct plate 3, a cooler 9 is provided in the cold air circulation duct 5, the lower end of the cold air circulation duct 5 is an air inlet 6, and the upper end is A cool air curtain is formed in the opening 2 by the cool air blown out from the air outlet 7 to form the cool air curtain in the opening 2 to cool the inside of the product storage 4 and prevent the outside air from entering the interior.

  A plurality of display shelves 10 are provided in the product storage 4 in the vertical direction, and a lower part of the deck pan 11 laid on the bottom of the product storage 4 communicates with the cool air circulation duct 5 and a part of the cool air circulation duct 5. The inside fan 8 for circulating cold air was installed here as a lower duct 12 constituting the above.

  On the other hand, a compressor 14, a condenser 15, a condenser blower 16, and the like that constitute a machine room 13 below the heat insulating wall in the showcase body 1 and constitute a part of the refrigerant circuit of the cooling device together with the cooler 9. At the same time, an electrical box for controlling the operation of the accumulator and showcase was installed. Furthermore, in order to evaporate the drain water dripped from the cooler 9 between the compressor 14 and the condenser blower 16, a drain evaporator 17 using an evaporating dish 17b having a plurality of evaporating plates 17a is also installed.

Although the above configuration is the same as the conventional example, the present invention selects a tall compressor as the high COP CO ₂ compressor for the compressor 14 and installs it in the machine room 13 to install the heat insulating wall 1a. The bottom of the back corner was raised 1b, and the machine room 13 was installed in this way so that the back side of the showcase body with the cold air circulation duct 5 partially raised.

  The raised portion 1b is formed at the lower part of the cold air circulation duct 5 and the lower duct 12 below the deck pan 11 which is the bottom plate of the product storage box 4, and the shape of the product storage box 4 changes. Shall not.

  The machine room 13 includes a fixed base portion 13a for installing the compressor 14 and a drawable base portion 13b. The drawable base portion 13b is formed of a base plate that can slide in the front-rear direction, and the condenser is disposed on the base plate 13b. 15, a condenser blower 16 and a drain evaporator 17 were installed.

  The refrigerant pipe 18 connecting the condenser 15 and the compressor 14 was formed in a shape that can be expanded and contracted so that it can correspond to the withdrawal of the condenser 15. As an example, the refrigerant pipe 18 is made of a copper pipe having flexibility. The refrigerant pipe 18 may be formed in a coil shape, a bellows shape, or a serpentine shape as long as the drawable base portion 13b provided with the condenser 15 and the like can be extended and retracted so as to be drawn out to the front of the machine room 13. May be.

  Further, in the present embodiment, the drawable base portion 13b in which the condenser 15 and the like are installed is configured to be drawn out to the front of the machine room 13, but may be configured to be drawn out to the side or the rear of the machine room 13. .

It is a vertical side view which shows embodiment of the showcase of this invention. It is a vertical side view which shows the prior art example of a showcase.

DESCRIPTION OF SYMBOLS 1 ... Showcase body 1a ... Heat insulation wall 1b ... Bottom raising 2 ... Opening 3 ... Duct plate 4 ... Product storage 5 ... Cold air circulation duct 6 ... Suction port 7 ... Outlet 8 ... Inside fan 9 ... Cooler 10 ... Display shelf DESCRIPTION OF SYMBOLS 11 ... Deck pan (snow) 12 ... Lower duct 13 ... Machine room 13a ... Fixed base 13b ... Drawable base 14 ... Compressor 15 ... Condenser 16 ... Condenser blower 17 ... Drain evaporator 17a ... Evaporating plate 17b ... Evaporating plate 18 ... Refrigerant piping

Claims (2)

  The interior of the showcase body, which has an opening for putting in and out the product on the front and is formed of a heat insulating wall having a substantially U-shaped cross section, is divided into a product storage and a cold air circulation duct by a duct plate, and the cold air circulation duct A cooler is installed, the lower end of the cool air circulation duct is formed at the air inlet, the upper end is formed at the cool air outlet, and the cool air blown out from the outlet forms a cool air curtain at the opening to cool the inside of the product storage. At the same time, in the showcase that prevents the intrusion of outside air into the cabinet, the machine room formed in the lower part of the heat insulation wall raises the heat insulation wall so that the rear side of the showcase body with the cold air circulation duct is partly raised. A showcase featuring a high compressor.   The showcase according to claim 1, wherein the blower, the condenser, and the evaporator installed in the machine room are arranged on a base plate that is slidable in the front-rear direction and can be pulled out while leaving the tall compressor.

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