JPS6030700Y2 - Double air curtain type refrigerated case - Google Patents

Description

[Detailed description of the invention] This invention relates to a double air curtain type refrigerated showcase. The structure consists of small ducts on the left and right, and the space from the front filter opening sandwiched between these left and right small ducts to the bottom, back, and ceiling is used as an air flow path for cooling the condenser. This invention relates to a double air curtain type refrigerated showcase in which a duct is provided with a vent leading to an air flow path for cooling a condenser.

Open refrigerated (or frozen) showcases found in supermarkets, department stores, etc. often employ a double air curtain system to prevent cold air from escaping as much as possible.

On the other hand, among these refrigerated showcases, those with an air-cooled condenser attached to the main body require an air flow path for cooling the condenser, but the air flow path is designed to prevent heat dissipation performance from decreasing due to clogging of the condenser. A filter is installed at the inlet.

However, if this filter becomes clogged, the air flow is restricted, and there may not be enough heat exchange air to dissipate heat from the condenser, often causing high temperature and high pressure abnormalities in the unit. .

This idea was devised in view of these circumstances, and its main structural feature is that the outer duct of the double air curtain is provided with a vent that leads to the air flow path for cooling the condenser. Even if the filter becomes clogged, the air from the outer layer of the double air curtain can be taken into the condenser cooling air flow path, and the location of the vent can prevent high temperature and high pressure abnormalities in the condensing unit. Specifically, it is preferably between the fan outlet side of the small duct and the condenser suction side of the condenser cooling air flow path, and more preferably the bottom.

Other specific structural features and advantages of this invention will become clear from the following description of the embodiments.

In FIGS. 1 to 3, a double air curtain type refrigerated showcase 1 has an inner layer duct 3 for cooling the inside of the case 2.
, an outer layer duct 4 that prevents cold air from escaping on the outside, and an air flow path 5 for cooling the condenser.

The inner layer duct 3 is configured so that cool air is sucked in from an inlet lower part by a fan 6, cooled by a cooler 8, and circulated into the case 2 from an outlet 9 (dotted line arrow).

On the other hand, the outer layer duct 4 consists of small ducts 10 and 11 on the left and right, and the small ducts 11 reach from the inlet 12 on the front of the case body to the bottom, back, ceiling, and outlet 13 on the front of the main body, and are installed inside the bottom. The fan 14 circulates as shown by the solid arrow.

Note that the left half duct 10 has exactly the same configuration as the right small duct 11, so the explanation will be omitted.

On the other hand, the air flow path 5 for cooling the condenser flows from the center narrowed by the left and right small ducts, that is, from the air inflow opening with the filter 15 on the front, to the bottom, back, the condenser 17 and its fan 18.
It is formed by a space extending from the ceiling section where the is installed to the air outflow opening 19 at the front.

Note that the air flow is indicated by double-lined arrows.

20.21 are ventilation holes provided at the bottom of the left and right small ducts 10.11 at the rear of the fan 14. In the unlikely event that the filter 15 becomes clogged or that some air enters in front of the filter 15, 10.1 Even if there are restrictions placed on the left and right small ducts, these vents will
1 air can be sucked in, preventing high temperature and high pressure abnormalities in the condensing unit due to poor heat dissipation of the condenser 17, thereby sufficiently cooling the inside of the showcase and preventing burnout of the compressor motor. .

In addition to these vents 20 and 21, there are small left and right ducts 10.
．． A vent hole 23 is provided in each of the vent holes 11 so that the center thereof is in a straight line, and can be used for drain water piping, etc. when the showcase is connected.

In addition, these vents reduce the static pressure in the outer duct, allowing the fan's capacity to be used effectively without loss.

The showcase 1 can structurally utilize the left and right small ducts 10 and 11 as legs of the main body.

Furthermore, the space in the center allows the support arm of a forklift to be inserted from the back, making it convenient for transportation.

Note that the air curtains provided by the outer layer ducts are only applied to the left and right sides of the showcase, but by simply applying the air curtains to both sides, large disturbances in the cold air can be prevented.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a double air curtain type refrigerated showcase according to this invention, FIG. 2 is a schematic perspective view thereof, and FIG. 3 is a partially cutaway front view thereof. 1...Double air curtain type refrigerated showcase,
4...Outer layer duct, 5...Air flow path for condenser air cooling, 10, 11...Small duct, 2
0, 21, 23...Vent.

Claims (1)

[Scope of utility model registration request] The outer layer duct of the double air curtain consists of small ducts on the left and right that extend from the inlet on the front of the main unit to the bottom, back, ceiling, and outlet on the front. A double air curtain characterized in that the space from the opening with a filter to the bottom, back, and ceiling is used as an air flow path for cooling the condenser, and small ducts on the left and right are provided with vents that lead to the air flow path for cooling the condenser. Refrigerated showcase.