JP2000199680A - Cooling storage cabinet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To scarcely take place a fault by a reduction in number of switches by providing a switch detecting and operating switching elements to a phase when the elements are disposed at a closed position and not operating when the elements are disposed at its open position at an either one element. SOLUTION: When opposed switching elements 3a, 3b of an upper stage are closed, opposed ends 10 of the elements 3a, 3b approach, and when opposed switching elements 3c, 3d of a lower stage are closed, opposed ends 10 of the elements 3c, 3d approach. At the elements 3a, 3b of the upper stage, a single switch 9 is mounted at the oppose end 10 of the one element 3a. At the elements 3c, 3d of the lower stage, a single switch 9 is mounted at the opposed end 10 of the one element 3c. The switches 9 are constituted of a non-contact type proximity switch for detecting metal. When the element 3 is made of metal, only when the elements 3 are disposed at the closed position, it is operated, but when the elements 3 are disposed at the open position, it is not operated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a cooling storage.

[0002]

2. Description of the Related Art As shown in FIG. 4, a cooling storage 53 having a plurality of doors (opening / closing members) 51 is generally known. In this type of cooling storage 53, a switch 55 for detecting that the opening / closing body 51 is opened is provided with a switch 55 concealed by the opening / closing body 51, one for each opening / closing body 51.
7 is attached.

As the switch 55, generally, a contact type push-on switch (mechanical open / close switch) is often used.

[0004]

However, in the conventional configuration, the number of switches 55 must be equal to the number of the opening / closing members 51, and the contact-type push-on switch 55 has the When the switch is used in a commercial cooling storage having a high opening / closing frequency, the contacts are opened and closed each time the opening / closing body 51 is opened / closed, and the durability of the contacts of the contact-type push-on switch 55 is impaired, and a failure is likely to occur. There is a problem.

Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art, to reduce the number of switches for detecting the open / closed state of the opening / closing body, and to provide a cooling storage having a switch that is unlikely to cause a failure. Is to do.

[0006]

According to the first aspect of the present invention,
In a cooling storage provided with at least two opening and closing members such as doors, when each of the opening and closing members is in a closed position, the opposite opening and closing member is detected and operated, and when the opening and closing member is in an open position, it does not operate. The switch is provided on one of the opening and closing members.

According to the first aspect of the present invention, the open / close state of the opening / closing body is detected by providing a switch that operates when the opening / closing body is closed and does not operate when the opening / closing body is opened. Can be reduced.

According to a second aspect of the present invention, in the first aspect of the present invention, the opening / closing body is a double door type door, and the switch is attached to an opposite end face of one of the doors. It is a feature.

According to a third aspect of the present invention, in the first aspect of the present invention, the opening and closing body is a combination of a rotating door and a drawer door.

[0010] The invention according to claim 4 is the invention according to claims 1 to 3.
In the invention described in any one of the above, the opening / closing body is a metal opening / closing body, and the switch is a non-contact type proximity switch for detecting metal.

According to the fourth aspect of the present invention, a non-contact proximity switch is used as a switch that operates when the opening / closing body is closed and does not operate when the opening / closing body is opened.
Even in the case of a cooling storage for business use which is frequently opened and closed, the durability is not impaired and a failure is less likely to occur.

Also, since the proximity switch detects metal, if the opening / closing body is open and a person is near the opening / closing body, the opening / closing state of the opening / closing body can be closed by detecting a person. Is not detected by mistake.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a cooling storage. The main body 5 of the cooling storage 1 is provided with two sets, ie, four, of upper and lower opening and closing members 3a and 3b which are opened to the front surface and formed by opposing rotating doors. Opening / closing members 3c and 3d are opposed to each other. 11 is a handle. When these opening and closing members 3 are opened, the main body 5 is opened.
Has a storage room 13 inside, and shelves 15 for placing foods and the like in the storage room 13 are provided at four places.

A machine room 7 is provided above the main body 5. The machine room 7 is provided with a compressor 23, a condenser 25, and a condenser blower 27 that constitute the refrigerating device 17,
As shown in FIG. 2, the storage room 13 is provided with an evaporator 19 and an evaporator blower 21 that constitute the refrigerating device 17. A grill 29 is provided on the front of the machine room 7, and a control panel 31 is embedded in the grill 29. A control device 33 is built in the control panel 31.

FIG. 3 shows a refrigeration cycle.

That is, the above-described compressor 23 and condenser 2
5, decompression device (capillary tube) 37 and evaporator 1
9 are connected to form a refrigeration cycle. 39
Is a check valve. A control device 33 is connected to the compressor 23.

In this embodiment, as shown in FIG. 1, there is a feature in a mounting position of a switch 9 for detecting that the double-door type opening / closing body 3 is opened.

When the upper opening / closing members 3a, 3b are closed, the opposing end faces 10 of the opening / closing members 3a, 3b are close to each other. The opposing end faces 10 of 3c and 3d approach each other. In this embodiment, a single switch 9 is attached to the opposing end face 10 of one of the opening and closing bodies 3a and 3b in the upper opening and closing bodies 3a and 3b, and the opposing end face of the one of the opening and closing bodies 3c in the lower opening and closing bodies 3c and 3d. A single switch 9 is attached to 10.

Each switch 9 is constituted by a non-contact type proximity switch for detecting a metal. If each switch 3 is made of a metal such as stainless steel, for example, each switch 9 is in a closed position. Only when the opening / closing body 3 is in the open position, as shown in FIG. The switch 9 is connected to a control device 33 via a control signal line 35, as shown in FIG.

In this embodiment, the open / close state of the opening / closing body 3 can be detected by providing a single switch 9 on only one of the opposing opening / closing bodies 3. And cost can be reduced.

The switch 9 is supplied with an alternating current and generates a weak magnetic field near the switch 9.
When a conductor such as a metal is in the magnetic field, an eddy current is generated by electromagnetic induction, and an object is detected based on the presence or absence of the eddy current. That is, the switch 9 is configured such that the eddy current is generated by electromagnetic induction when the opposed end faces 10 of the respective open / close bodies 3 are close to each other, that is, in the closed state, since the opposed end faces 10 of the open / close bodies 3b are made of metal. Occurs, and the occurrence of the eddy current is detected.

Similarly, since the opposing end surfaces 10 of the opening / closing members 3d are made of metal, when the opposing end surfaces 10 of the opening / closing members 3 are close to each other, that is, in a closed state, an eddy current is generated by electromagnetic induction. Occurs, and the occurrence of the eddy current is detected.

Therefore, when the opening / closing body 3 is closed,
There is no need to contact the opening / closing body 3 as in a conventional contact-type push-on switch, and even when the switch is used in a commercial cooling storage frequently opened and closed, the durability of the switch is not impaired, and the switch is less likely to fail. This has the effect.

Further, since the switch 9 is for detecting metal, when the opening / closing body 3 is opened, if the opening / closing body 3 is open,
, The person is detected and the open / close state of the opening / closing body 3 is not erroneously detected as being closed.

With the above configuration, the opening / closing body 3
Is closed, the switch 9 detects the eddy current, the control device 33 detects that the opening / closing body 3 is closed, and the control device 33 transmits a control signal via the control signal line 35 to the evaporator. It is sent to the blower 21 to start the operation of the evaporator blower 21. When the opening / closing body 3 is opened, the switch 9 does not detect the eddy current, the control device 33 detects that the opening / closing body 3 is open, and the control device 33 sends the control signal via the control signal line 35 to the control signal line 35. To the evaporator blower 21,
The operation of the evaporator blower 21 is stopped.

Therefore, when the opening / closing body 3 is opened, the operation of the evaporator blower 21 is stopped, so that the cooled air in the storage chamber 13 is blown to the outside by the evaporator blower 21. Can be prevented.

Although the present invention has been described with reference to one embodiment, it is apparent that the present invention is not limited to this. For example, the invention is not limited to application to pivoting doors. It goes without saying that the present invention is applicable even if the opening / closing body is a combination of a rotating door and a drawer door.

[0029]

According to the present invention, the open / close state of the opening / closing body is detected by providing a switch that operates when the opening / closing body is closed and does not operate when the opening / closing body is opened on only one of the opposing opening / closing bodies. The number of switches to be mounted can be reduced.

Further, in the present invention, by using a non-contact proximity switch, the durability of the switch is not impaired even in the case of a commercial cooling storage frequently opened and closed, and the switch is less likely to fail.

Also, since the proximity switch detects a metal, if a person is near the opening / closing body while the opening / closing body is opened, the opening / closing state of the opening / closing body can be closed by detecting a person. Is not detected by mistake.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cooling storage according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a cooling storage.

FIG. 3 is a circuit diagram of a refrigeration device of a cooling storage.

FIG. 4 is a front view of a conventional cooling storage.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooling storage 3 Opening-closing body 7 Refrigeration equipment room 9 Switch 17 Refrigeration equipment 19 Evaporator 21 Blower for evaporators 23 Compressor

Claims (4)

[Claims] In a cooling storage provided with at least two opposing opening and closing members such as doors, when each of the opening and closing members is at a closed position, the opposing opening and closing member is detected and operated, and the opening and closing member is opened. A cooling storage box, wherein a switch which does not operate when the switch is provided in one of the opening / closing members is provided. 2. The refrigerator according to claim 1, wherein the opening / closing body is a double door type door, and the switch is mounted on an opposite end face of one of the doors. 3. The refrigerator according to claim 1, wherein the opening / closing body is a combination of a rotating door and a drawer door. 4. The opening / closing body is a metal opening / closing body,
The refrigerator according to any one of claims 1 to 3, wherein the switch is a non-contact proximity switch that detects a metal.