JP2002022342A - Show case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a show case which has a motor within a heater for prevention of dew condensation at a section where dew is easy to condense. SOLUTION: This show case 1 has heaters 23 and 24 for prevention of dew condensation within and can vary the output of the heaters for prevention of dew condensation, according to the value of a humidity sensor as for detecting the humidity within a shop 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a showcase having a heater for preventing dew condensation in a portion where dew condensation easily occurs.

[0002]

2. Description of the Related Art Conventionally, as a showcase of this type, Japanese Patent Laid-Open Publication No. Hei 5-306871 (F25D17 / 08) discloses that an inner wall is provided inside a heat insulating wall having an opening on one side, and a partition is provided between both walls. A plate is provided to form a protective air flow path and a cool air flow path with the heat insulating wall, the partition wall, and the inner wall, and a plurality of outlets respectively communicating with the protective air flow path and the cool air flow path are arranged side by side at the upper edge of the opening. And, in an open showcase that closes the opening with a protective airflow and a cold airflow,
A partition plate that is provided between the outlet of the protective airflow passage and the outlet of the cool airflow passage and extends downward from both outlets, is attached to the partition wall; A configuration is disclosed in which a front surface of the partition plate corresponding to a lower portion of the passage is formed as a curved surface that gradually approaches the cold air flow side at a predetermined curvature.

[0003]

In the prior art as described above, the setting of the heater for preventing dew condensation is based on the harshest conditions throughout the year, and the condition is good because the power is always supplied. In the season, time zone, and the like, the heater is energized more than necessary, which consumes unnecessary electric power and causes a cooling load.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is possible to prevent unnecessary power consumption of a condensation prevention heater by preventing unnecessary power consumption, and also to prevent useless cooling load. Provide a showcase.

[0005]

According to a first aspect of the present invention, there is provided a heater having a dew condensation preventing heater therein, wherein the dew condensation is performed in accordance with a value of a humidity sensor for detecting humidity in a store. This is a showcase in which the output of the prevention heater is variable.

As described above, by making the output of the dew condensation preventing heater variable according to the value of the humidity sensor for detecting the humidity in the store, unnecessary power consumption and unnecessary cooling load can be prevented. it can.

According to a second aspect of the present invention, in addition to the first aspect, in a store having a dehumidifying air conditioner, the humidity sensor is a showcase using a humidity sensor of the dehumidifying air conditioner.

As described above, in a store having a dehumidifying air conditioner, by using the humidity sensor of the dehumidifying air conditioner as the humidity sensor, the humidity in the store can be measured without providing a new humidity sensor.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a longitudinal sectional view of a showcase, FIG. 2 is a control explanatory diagram of a showcase and a dehumidifying air conditioner, FIG. 3 is an explanatory diagram of an output of a dew condensation preventing heater in a store, and FIG. It is control explanatory drawing.

As shown in FIG. 1, a showcase 1 according to the present invention has side plates 3 attached to both ends of a heat insulating wall 2 having a substantially U-shaped cross section.
It is composed of A blower fan 10 for circulating cool air is provided on the bottom wall 2A of the heat insulating wall 2,
The first partition plate 4A and the second partition plate 4B made of metal are attached to the inside of the first partition plate at an interval, and the inside of the first partition plate 4A is used as the product storage room 11, and the first partition plate is provided. A first cold air passage 6 is provided between the second partition plate 4B and the second partition plate 4B, and a second cool air passage 7 is provided between the second partition plate 4B and the heat insulating wall 2. An evaporator 9 is provided in the first cool air passage 6. The first and second discharge ports 1 are provided above the front ends of the first and second cold air passages 6 and 7, respectively.
2 and 13 are formed, and the first and second discharge ports 12 and 13 are formed.
A suction port 14 is formed below the first storage port 11, and the first and second discharge ports 12 and 13 are connected to the opening 15 of the product storage chamber 11 through the suction port 1.
A double air curtain heading to 4 is formed.

In the commodity storage room 11, a plurality of shelves 16 supported by brackets 17 for displaying commodities and a bottom plate 18 are provided at the lower end. Is provided with a fluorescent lamp 21 for illuminating the products displayed in the refrigerator, and a fluorescent lamp 20 is also provided behind the first discharge port 12. It has been. Also, the second discharge port 1
An external fluorescent lamp 19 that illuminates the entire interior of the refrigerator and the surroundings of the refrigerator is provided on the reflector 23 in front of 3. Further, dew condensation prevention heaters 23, 24, etc. are provided in places where dew condensation is likely to occur, such as near the first and second discharge ports 12, 13 and the suction port 14.

As shown in FIG. 2, a dehumidifying air conditioner 31 is provided for adjusting the humidity in the store 30. The air in the store is sucked through an air inlet 32 provided on the ceiling of the store 30, and the air is returned. Dehumidifying air conditioner 31 from air duct 33
Leading to. Here, a controller 34 is provided in the dehumidifying air conditioner 31.
Determines the degree of dehumidification in the dehumidifying air conditioner 31 based on the output of the humidity sensor 35 provided on the return air duct 33 or a pillar or the like in the store 30. The air dehumidified by the dehumidifying air conditioner 31 passes through the supply air duct 36 and is supplied into the store 30 from the air discharge port 37 at the lower part of the showcase 1. Here, the humidity in the store changes depending on the temperature in the store, but the temperature in the store does not change much throughout the year (about 20 to 30 degrees). There is no sex.

Further, the controller 34 controls the showcase 1
As shown in FIG. 3, the dew condensation preventing heaters 23 and 24 in the showcase 1 change the output value according to the in-store humidity which is the output value of the humidity sensor 35. However, the output values in FIG. 3 are merely examples.

With the above structure, the heater 2 for preventing dew condensation
The setting of 3, 24 is based on the harshest conditions throughout the year, but since the output value is changed according to the humidity in the store, unnecessary power consumption by the dew condensation preventing heaters 23, 24 is prevented, and the dew condensation is prevented. Although the prevention heaters 23 and 24 serve as a cooling load for the showcase 1, it is possible to prevent useless cooling loads.

Further, since the humidity sensor of the showcase 1 uses the humidity sensor 35 of the dehumidifying air conditioner 31, the humidity in the store can be measured at low cost without providing a new humidity sensor.

Further, when the outputs of the dew condensation preventing heaters 23 and 24 are, for example, 50% as shown in FIG. 4, half the energization time is energized, and when the output is 25%, the energization time is reduced. The energization is performed only for a quarter of the time.

With the above arrangement, the dew condensation preventing heater 23,
Since the output value is changed according to the energization time without changing the output of the output 24, it is possible to change the apparent output with a simple configuration.

[0019]

As described in detail above, according to the first aspect, the output of the dew condensation prevention heater is made variable in accordance with the value of the humidity sensor provided in the store and detecting the humidity in the store.
It is possible to prevent unnecessary power consumption and to prevent useless cooling load.

According to the second aspect, in a store having a dehumidifying air conditioner, the humidity in the store is measured without newly providing a humidity sensor by using the humidity sensor of the dehumidifying air conditioner. be able to.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a showcase.

FIG. 2 is a control explanatory diagram of a showcase and a dehumidifying air conditioner.

FIG. 3 is an explanatory diagram of an output of a dew condensation preventing heater in a store humidity.

FIG. 4 is a control explanatory diagram of a dew condensation prevention heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Showcase 23, 24 Condensation prevention heater 30 Store 31 Dehumidifying air conditioner 35 Humidity sensor

 ──────────────────────────────────────────────────の Continuing on the front page (72) Kazuhiro Sekiguchi 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Shigeo Yatsu 2-5-2 Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. (72) Inventor Toshio Miyazawa 2-5-5, Keihanhondori, Moriguchi-shi, Osaka Prefecture Inside Sanyo Electric Co., Ltd. 2-5-5 Sanyo Electric Co., Ltd. F term (reference) 3B110 AA12 BA05 CA08 3L045 AA02 BA01 CA02 DA01 EA01 KA01 LA13 MA07 NA24 PA02 PA04

Claims (2)

[Claims] 1. A showcase having a dew condensation prevention heater inside, wherein the output of the dew condensation prevention heater is made variable according to the value of a humidity sensor for detecting in-store humidity. 2. The showcase according to claim 1, wherein in a store having a dehumidifying air conditioner, a humidity sensor of the dehumidifying air conditioner is used as the humidity sensor.