JP2002022241A - Desiccant air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a desiccant air conditioner for controlling the ventilation amount of outside air, which is installed in a shop such as a supermarket. SOLUTION: The desiccant air conditioner is provided with a dehumidifying air conditioner 31 which comprises an outside air intake device 36, a blower 37, a rotary dehumidifier 38, cooling heat exchanger 39 and heating heat exchanger 40, and further provided with a returning air duct 33 for directing the air taken in from above a shop 30 to the dehumidifying air conditioner, and a supply air duct 34 for directing the air that has passed through the dehumidifying air conditioner to the lower part of a show case 1 disposed in the shop. The desiccant air conditioner is also provided with an outside air humidity sensor 45 for measuring humidity of the outside air. In accordance with the output from the outside air humidity sensor, the ventilation amount of the outside air intake device can be controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a desiccant air conditioner for controlling the ventilation of outside air introduced into a store such as a supermarket.

[0002]

2. Description of the Related Art Conventionally, an air conditioner for air-conditioning a store in a supermarket or the like is disclosed in JP-A-2000-12.
As disclosed in Japanese Patent Publication No. 1102 (F24F 3/052), cold air leaked from a showcase is used as a part of cooling operation in summer, and part of the air is blown out from the lower part of the showcase during heating operation in winter. A configuration that eliminates cold aisle and prevents discomfort to customers is disclosed.

[0003] In addition, ventilation in a store is performed using a ventilation fan separately from the air conditioner.

[0004]

However, in the prior art as described above, since the air conditioner and the ventilator in the store are separately operated, the air cooled and heated by the air conditioner is immediately discharged to the outside by the ventilation fan. There is a drawback that the air that has left the ventilation fan is difficult to be discharged to the outside.

[0005] Further, since it is not possible to change the ventilation volume of the ventilation fan, there is a risk that the ventilation of the air conditioner is increased by performing ventilation more than necessary, or that the ventilation becomes insufficient. is there.

The present invention has been made in view of the above-mentioned problems, and provides a desiccant air conditioner for efficiently performing air conditioning and ventilation in a store.

[0007]

According to a first aspect of the present invention, there is provided an external air intake device, a blower, a rotary dehumidifier, a cooling heat exchanger, and a heating heat exchanger. A dehumidifying air conditioner, a return air duct that guides air sucked in from the upper part of the store to the dehumidifying air conditioner, and a supply air duct that guides air that has passed through the dehumidifying air conditioner to a lower part of a showcase installed in the store. A desiccant air conditioner having an outside air humidity sensor for measuring the outside air humidity, and adjusting the amount of ventilation from the outside air intake device by the output of the outside air humidity sensor.

As described above, an outside air humidity sensor for measuring the outside air humidity is provided, and the amount of ventilation from the outside air intake device is adjusted by the output of the outside air humidity sensor to reduce the amount of ventilation on a day when the outside air humidity is high. Thereby, the dehumidifying efficiency can be improved.

According to a second aspect of the present invention, a dehumidifying air conditioner including an outside air intake device, a blower, a rotary dehumidifying device, a cooling heat exchanger, and a heating heat exchanger, and the dehumidifying air sucked from an upper part of the store. It has a return air duct leading to the air conditioner, and a supply air duct leading the air passing through the dehumidifying air conditioner to the lower part of the showcase installed in the store, and has an outside air temperature sensor for measuring the outside air temperature. The desiccant air conditioner adjusts the amount of ventilation from the outside air intake device based on the output of the outside air temperature sensor.

As described above, an outside air temperature sensor for measuring the outside air temperature is provided, and the output of the outside air temperature sensor is used to adjust the amount of ventilation from the outside air intake device, so that the outside air temperature is high in the summer months and the outside air temperature is low in the winter months. By reducing the ventilation volume, etc.
Cooling and heating efficiency can be improved.

According to a third aspect of the present invention, there is provided a dehumidifying air conditioner including an outside air intake device, a blower, a rotary dehumidifying device, a cooling heat exchanger, and a heating heat exchanger; It has a return air duct leading to an air conditioner, and a supply air duct leading air passing through the dehumidifying air conditioner to a lower part of a showcase installed in a store, and data of a change in the number of customers with a change in time. And a desiccant air conditioner that adjusts the amount of ventilation from the outside air intake device according to this data.

In this way, by creating data on the change in the number of customers due to a change in time, and adjusting the ventilation volume from the outside air intake device in accordance with this data, the time at which the number of customers is expected to be small can be increased. By controlling the ventilation volume according to the number of customers, such as reducing the ventilation volume and increasing the ventilation volume at a time when it is predicted that there are many customers, air conditioning can be efficiently performed.

According to a fourth aspect of the present invention, a dehumidifying air conditioner including an outside air intake device, a blower, a rotary dehumidifying device, a cooling heat exchanger, and a heating heat exchanger, and the dehumidifying air sucked from an upper portion in the store. A human air sensor having a return air duct leading to an air conditioner and a supply air duct leading air passing through the dehumidifying air conditioner to a lower part of a showcase installed in the store, and measuring the number of customers in the store And a desiccant air conditioner that adjusts the amount of ventilation from the outside air intake device according to the number of customers in the store.

As described above, the human sensor for measuring the number of customers in the store is provided, and the amount of ventilation from the outside air intake device is adjusted according to the number of customers in the store. Since the amount of ventilation can be controlled, air conditioning can be performed more accurately and efficiently than in claim 3.

According to a fifth aspect of the present invention, a dehumidifying air conditioner including an outside air intake device, a blower, a rotary dehumidifying device, a cooling heat exchanger, and a heating heat exchanger, and dehumidifying air sucked from an upper portion of the store. It has a return air duct leading to the air conditioner, and a supply air duct leading the air passing through the dehumidifying air conditioner to the lower part of the showcase installed in the store, wherein the dehumidifying air conditioner is illuminated in the store. And a desiccant air-conditioning system that, when the lighting switch is off, minimizes the amount of ventilation from the outside air intake device.

As described above, the dehumidifying air conditioner is linked with the lighting switch in the store, and when the lighting switch is off, the amount of outside air from the outside air intake device is minimized. The amount of ventilation becomes the minimum, and it is possible to prevent wasteful ventilation and efficiently air-condition.

According to a sixth aspect of the present invention, a dehumidifying air conditioner including an outside air intake device, a blower, a rotary dehumidifying device, a cooling heat exchanger and a heating heat exchanger, and dehumidifying the air sucked from the upper part of the store. A return air duct leading to an air conditioner, and a supply air duct leading air passing through the dehumidifying air conditioner to a lower part of a showcase installed in a store, wherein the dehumidifying air conditioner is illuminated by the showcase. A desiccant air conditioner that is interlocked with a switch and minimizes the amount of ventilation from the outside air intake device when the illumination switch of the showcase is off.

As described above, the dehumidifying air conditioner is linked with the lighting switch of the showcase, and the amount of outside air from the outside air intake device is minimized when the lighting switch of the showcase is off. In addition to 5, even at the time when the employees and the like are performing the display work, the ventilation amount is the minimum, and the air conditioning can be efficiently performed by preventing the useless ventilation.

According to a seventh aspect of the present invention, a dehumidifying air conditioner including an outside air intake device, a blower, a rotary dehumidifying device, a cooling heat exchanger and a heating heat exchanger, and dehumidifying air sucked from an upper portion of the store. A return air duct that leads to an air conditioner, and a supply air duct that guides air that has passed through the dehumidifying air conditioner to a lower part of a showcase installed in the store, and an outside air temperature sensor that measures outside air temperature; The desiccant air conditioner has an outside air humidity sensor for measuring the outside air humidity, and adjusts the amount of ventilation from the outside air intake device by the outputs of the outside air temperature sensor and the outside air humidity sensor.

As described above, the apparatus has the outside air temperature sensor for measuring the outside air temperature and the outside air humidity sensor for measuring the outside air humidity.
By adjusting the amount of ventilation from the outside air intake device based on the outputs of the outside air temperature sensor and the outside air humidity sensor, the dehumidifying efficiency and the cooling / heating efficiency can be improved.

According to the present invention, a dehumidifying air conditioner having an outside air intake device, a blower, a rotary dehumidifying device, a cooling heat exchanger and a heating heat exchanger, and dehumidifying the air sucked from the upper part of the store. A return air duct that leads to an air conditioner, and a supply air duct that guides air that has passed through the dehumidifying air conditioner to a lower part of a showcase installed in the store, and an outside air temperature sensor that measures outside air temperature; An outside air humidity sensor that measures the outside air humidity, and a human sensor in the store that measures the number of customers in the store, and the outside air temperature sensor, the outside air humidity sensor, and the output of the human sensor from the outside air intake device by the output of the human sensor It is a desiccant air conditioner that regulates the ventilation volume of the air.

As described above, the outside air temperature sensor for measuring the outside air temperature, the outside air humidity sensor for measuring the outside air humidity, and the human sensor in the store for measuring the number of customers in the store are provided. By adjusting the amount of ventilation from the outside air intake device based on the outputs of the outside air humidity sensor and the human sensor, the dehumidifying efficiency and the cooling / heating efficiency can be further improved as compared with the seventh aspect.

[0023]

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 showing a change of a ventilation amount with respect to outside air humidity, and FIG. FIG. 5 is an explanatory diagram showing a change in the number of customers and the amount of ventilation with respect to time.

As shown in FIG. 1, the showcase 1 of 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.

As shown in FIG. 2, a dehumidifying air conditioner 31 is provided to adjust the humidity in the store 30. The air in the store is sucked through an air inlet 32 provided in the ceiling of the store 30, and the air is returned. Dehumidifying air conditioner 31 from air duct 33
Leading to. The air dehumidified by the dehumidifying air conditioner 31 passes through a supply air duct 34 and is supplied into the store 30 from an air discharge port 35 at a lower portion of the showcase 1. Here, inside the dehumidifying air conditioner 31, an outside air intake device 36 for taking in outside air as needed, and a blower for circulating the air in the store 30 to the dehumidifying air conditioner 31 and returning to the store 30 37, a rotary dehumidifier 38 for dehumidifying the air in the dehumidifying air conditioner 31, a cooling heat exchanger 39 and a heating heat exchanger 40 for cooling and heating the air in the dehumidifying air conditioner 31,
A controller 41 and the like for controlling these devices are provided. The controller 41 measures an optical sensor or an illumination switch 42 for measuring ON / OFF of illumination in the store 30, a human sensor 43 for measuring the number of customers in the store 30, and an outside air temperature and an outside air chamber. The outside air temperature sensor 44 and the outside air humidity sensor 45 are connected to a controller (not shown) that controls the lighting device and the like of the showcase 1. The outputs of these sensors determine the opening degree of the outside air intake device 36 in the dehumidifying air conditioner 31. I am adjusting.

Here, as shown in FIG. 3, the controller 41 controls the dehumidifying air conditioner 3 in accordance with the output value of the outside air humidity sensor 45.
The ventilation volume in 1 is adjusted.

According to the above configuration, an outside air humidity sensor 45 for measuring the outside air humidity is provided, and the ventilation amount from the outside air intake device 36 is adjusted by the output of the outside air humidity sensor 45 so that the ventilation amount is adjusted on the day when the outside air humidity is high. By reducing the amount, the dehumidifying efficiency can be improved.

As shown in FIG. 4, the controller 41 controls the dehumidifying air conditioner 3 in accordance with the output value of the outside air temperature sensor 44.
The ventilation volume in 1 is adjusted.

With the above-described structure, there is provided an outside air temperature sensor 44 for measuring the outside air temperature, and the output of the outside air temperature sensor 44 is used to adjust the amount of ventilation from the outside air intake device 36 to increase the outside air temperature in summer or summer. The cooling and heating efficiency can be improved by reducing the ventilation volume in winter or the like when the air temperature is low.

However, the outside air temperature sensor 44 shown in FIGS.
And the ventilation amount with respect to the output value of the outside air humidity sensor 45 is only an example.

Also, the number of customers in the store can be predicted to some extent, and as shown in FIG.
Based on past data such as temperature, create data on the change in the number of customers due to changes in the time, and create data on changes in the ventilation volume according to the change in the number of customers, thereby changing the ventilation volume according to the time. ing.

According to the above configuration, the ventilation volume is controlled according to the number of customers, such that the ventilation volume is reduced at the time when the number of customers is predicted to be small, and the ventilation volume is increased at the time when the number of customers is predicted to be large. By doing so, air conditioning can be performed efficiently.

However, the data of the change in the number of customers and the ventilation rate according to the change of the time shown in FIG. 5 are merely examples.

A human sensor 4 for measuring the number of customers in the store 30
3 is provided, and the amount of outside air from the outside air intake device is adjusted according to the number of customers in the store 30.

With the above configuration, the ventilation amount can be controlled in accordance with the actual number of customers in the store 30, so that the number of customers can be accurately measured and air conditioning can be performed more efficiently.

An optical sensor or an illumination switch 42 for measuring the on / off state of the lighting in the store 30 is provided to determine whether or not the store 30 is occupied by a person. did.

According to the above configuration, when there is no person in the store, the amount of ventilation is the minimum, and it is possible to prevent wasteful ventilation and perform air conditioning efficiently.

The controller 41 is connected to the showcase 1
When the lighting switch of the showcase 1 is turned off, the amount of outside air from the outside air intake device 36 is set to the minimum amount.

With the above configuration, the amount of ventilation is minimized at the time when an employee or the like is displaying the showcase 1 or the like at the time of closing the store, and furthermore, unnecessary ventilation can be prevented and air conditioning can be efficiently performed.

Further, the controller 41 regulates the amount of ventilation from the outside air intake device 36 based on the outputs of the outside air temperature sensor 44 and the outside air humidity sensor 45.

With the above configuration, the dehumidifying efficiency and the cooling / heating efficiency can be further improved.

In addition to the outside air temperature sensor 44 and the outside air humidity sensor 45, the ventilation from the outside air intake device 36 is adjusted by the output of the human sensor 43.

With the above configuration, the dehumidifying efficiency and the cooling / heating efficiency can be further improved.

[0046]

As described in detail above, according to the first aspect, an outside air humidity sensor for measuring the outside air humidity is provided, and the amount of outside air from the outside air intake device is adjusted by the output of the outside air humidity sensor. By reducing ventilation on high days,
Dehumidification efficiency can be improved.

According to a second aspect of the present invention, there is provided an outside air temperature sensor for measuring an outside air temperature, and the output of the outside air temperature sensor is used to adjust the amount of outside air from the outside air intake device so that the outside air temperature is high in summer and summer. The cooling and heating efficiency can be improved by reducing the ventilation volume in winter or the like when the air temperature is low.

According to the third aspect of the present invention, it is predicted that the number of customers is small by preparing data on the change in the number of customers due to a change in time and adjusting the amount of outside air from the outside air intake device in accordance with the data. At the time, while reducing the ventilation,
By controlling the ventilation volume according to the number of customers, for example, increasing the ventilation volume at a time when it is predicted that there are many customers, air conditioning can be efficiently performed.

According to the fourth aspect of the present invention, a human sensor for measuring the number of customers in the store is provided, and the amount of outside air from the outside air intake device is adjusted in accordance with the number of customers in the store. Therefore, the air conditioning can be controlled more accurately and efficiently than in claim 3.

According to the fifth aspect, the dehumidifying air conditioner is interlocked with the lighting switch in the store, and when the lighting switch is off, the amount of outside air from the outside air intake device is minimized. When there is no person, the ventilation volume is the minimum, and it is possible to prevent wasteful ventilation and perform air conditioning efficiently.

According to the sixth aspect, the dehumidifying air conditioner is linked with the lighting switch of the showcase, and the amount of outside air from the outside air intake device is minimized when the lighting switch of the showcase is off. In addition, in addition to the fifth aspect, the ventilation amount becomes the minimum even at the time when the employee or the like is performing the display work, and the air conditioning can be efficiently performed by preventing unnecessary ventilation.

According to the present invention, there is provided an outside air temperature sensor for measuring the outside air temperature and an outside air humidity sensor for measuring the outside air humidity. By adjusting the ventilation volume,
Dehumidifying efficiency and cooling / heating efficiency can be improved.

According to the eighth aspect of the present invention, there are provided an outside air temperature sensor for measuring the outside air temperature, an outside air humidity sensor for measuring the outside air humidity, and a human sensor in the store for measuring the number of customers in the store. By adjusting the amount of ventilation from the outside air intake device based on the outputs of the outside air temperature sensor, the outside air humidity sensor, and the human sensor, the dehumidifying efficiency and the cooling / heating efficiency can be further improved as compared with the seventh aspect.

[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 showing a change in a ventilation amount with respect to outside air humidity.

FIG. 4 is an explanatory diagram showing a change in a ventilation amount with respect to an outside air temperature.

FIG. 5 is an explanatory diagram showing changes in the number of customers and the amount of ventilation with respect to time.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Showcase 30 Store 31 Dehumidifying air conditioner 33 Return air duct 34 Supply air duct 36 Outside air intake device 37 Blower 38 Rotary dehumidifier 39 Heat exchanger for cooling 40 Heat exchanger for heating 42 Optical sensor 43 Human sensor 44 Outside air Temperature sensor 45 Outside air 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 F-term in Sanyo Electric Co., Ltd. 3L053 BC09 3L060 AA06 AA07 CC03 CC06 CC09 CC11 DD02 DD08

Claims (8)

[Claims] 1. A dehumidifying air conditioner comprising an outside air intake device, a blower, a rotary dehumidifying device, a cooling heat exchanger and a heating heat exchanger, and air sucked from an upper part of a store is sent to the dehumidifying air conditioner. In a desiccant air conditioning system having a return air duct that guides and a supply air duct that guides air that has passed through the dehumidifying air conditioner to a lower part of a showcase installed in a store,
A desiccant air conditioner, comprising an outside air humidity sensor for measuring outside air humidity, wherein the output of the outside air humidity sensor adjusts the amount of ventilation from the outside air intake device. 2. A dehumidifying air conditioner including an outside air intake device, a blower, a rotary dehumidifying device, a cooling heat exchanger and a heating heat exchanger, and air sucked from an upper part of a store is sent to the dehumidifying air conditioner. In a desiccant air conditioning system having a return air duct that guides and a supply air duct that guides air that has passed through the dehumidifying air conditioner to a lower part of a showcase installed in a store,
A desiccant air conditioner, comprising an outside air temperature sensor for measuring outside air temperature, wherein the output of the outside air temperature sensor adjusts the amount of ventilation from the outside air intake device. 3. A dehumidifying air conditioner comprising an outside air intake device, a blower, a rotary dehumidifying device, a cooling heat exchanger and a heating heat exchanger, and air sucked from an upper part of the store into the dehumidifying air conditioner. In a desiccant air conditioning system having a return air duct that guides and a supply air duct that guides air that has passed through the dehumidifying air conditioner to a lower part of a showcase installed in a store,
A desiccant air conditioner, wherein data of a change in the number of customers associated with a change in time is created, and the amount of ventilation from the outside air intake device is adjusted according to the data. 4. A dehumidifying air conditioner comprising an outside air intake device, a blower, a rotary dehumidifying device, a cooling heat exchanger and a heating heat exchanger, and air sucked from an upper part of a store is supplied to the dehumidifying air conditioner. In a desiccant air conditioning system having a return air duct for guiding and a supply air duct for guiding air passing through the dehumidifying air conditioner to a lower part of a showcase installed in the store, a human sensor for measuring the number of customers in the store is provided, A desiccant air conditioner, wherein the amount of ventilation from the outside air intake device is adjusted according to the number of customers in the store. 5. A dehumidifying air conditioner having an outside air intake device, a blower, a rotary dehumidifying device, a cooling heat exchanger and a heating heat exchanger, and air sucked from an upper part of a store is sent to the dehumidifying air conditioner. In a desiccant air conditioning system having a return air duct that guides and a supply air duct that guides air that has passed through the dehumidifying air conditioner to a lower part of a showcase installed in a store,
The desiccant air conditioner, wherein the dehumidifying air conditioner is linked to a lighting switch in the store, and a ventilation amount from the outside air intake device is minimized when the lighting switch is off. 6. A dehumidifying air conditioner including an outside air intake device, a blower, a rotary dehumidifying device, a cooling heat exchanger, and a heating heat exchanger, and air sucked from an upper portion of a store is sent to the dehumidifying air conditioner. In a desiccant air conditioning system having a return air duct that guides and a supply air duct that guides air that has passed through the dehumidifying air conditioner to a lower part of a showcase installed in a store,
The desiccant air conditioner, wherein the dehumidifying air conditioner is interlocked with a light switch of the showcase, and a ventilation amount from the outside air intake device is minimized when the light switch of the showcase is off. 7. A dehumidifying air conditioner having an outside air intake device, a blower, a rotary dehumidifying device, a cooling heat exchanger and a heating heat exchanger, and air sucked from an upper part in a store is sent to the dehumidifying air conditioner. In a desiccant air conditioning system having a return air duct that guides and a supply air duct that guides air that has passed through the dehumidifying air conditioner to a lower part of a showcase installed in a store,
It has an outside air temperature sensor that measures the outside air temperature, and an outside air humidity sensor that measures the outside air humidity, and the amount of ventilation from the outside air intake device is adjusted by the outputs of the outside air temperature sensor and the outside air humidity sensor. Desiccant air conditioner. 8. A dehumidifying air conditioner having an outside air intake device, a blower, a rotary dehumidifying device, a cooling heat exchanger and a heating heat exchanger, and air sucked from an upper part of a store is sent to the dehumidifying air conditioner. In a desiccant air conditioning system having a return air duct that guides and a supply air duct that guides air that has passed through the dehumidifying air conditioner to a lower part of a showcase installed in a store,
It has an outside air temperature sensor that measures outside air temperature, an outside air humidity sensor that measures outside air humidity, and a human sensor in the store that measures the number of customers in the store.These outside air temperature sensor, outdoor air humidity sensor, and human sensor A desiccant air conditioner, wherein a ventilation amount from the outside air intake device is adjusted by an output of a sensor.