JP4037675B2 - Open showcase - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an open showcase for displaying or storing frozen / refrigerated food, fresh food, etc. in a supermarket, a department store, a convenience store, and the like, and more particularly to an open showcase having an open top.
[0002]
[Prior art]
FIG. 5 is a cross-sectional view of a conventional flat-type refrigerated open showcase with the top opened, and FIG. 6A is a partial cross-sectional view of a conventional open showcase with a temperature sensor attached to the lower surface of the cold air outlet. b) is a partial cross-sectional view of a conventional open showcase in which a temperature sensor is mounted inside a cold air outlet.
[0003]
In FIG. 5, this open showcase 01 forms a cool air ventilation path by disposing inner cases 03a to 03c at a predetermined interval inside outer cases 02a to 02c made of box-shaped heat insulating walls. In addition, products such as fruits and vegetables are displayed in the product storage unit 04 surrounded by the inner cases 03a to 03c and having an open upper surface.
[0004]
Cold air sent from the blower F and the refrigerator (not shown) provided at the bottom between the inner and outer cases 02a to 02c and 03a to 03c is discharged from the cold air outlet 05, and sucked from the cold air inlet 06 and circulated. Thus, an air curtain is formed on the upper open surface of the product storage unit 04 so that the product storage unit 04 is kept cold.
[0005]
A temperature sensor T is attached to the open showcase 01 in order to keep the internal temperature constant. It is known that it is preferable to measure the cold air temperature directly by arranging the temperature sensor T in the air conditioning path surrounded by the air conditioning plate 07 in order to measure accurately without depending on the displayed product.
[0006]
However, in order to attach this type of temperature sensor T to a position where the cold air directly hits, it is unavoidable that the air conditioning plate 07 is obstructed and the attachment is difficult, so it is unavoidably attached in the vicinity of the cold air outlet 05.
[0007]
For example, as a conventional mounting example of the temperature sensor T, as shown in FIG. 5, the back wall of the inner case 03c in the vicinity of the cold air outlet in the warehouse, or the cold air outlet as shown in FIG. In a state where the temperature sensor T is held by the sensor mounting member 010 on the lower surface of the air conditioning plate 08 facing the inner side of 05 or on the air conditioning plate 08 inside the cold air outlet 05 as shown in FIG. It was attached via screw 012.
[0008]
[Problems to be solved by the invention]
However, as shown in FIG. 5 and FIG. 6A, when the temperature sensor T is attached to the back wall of the inner case 03c in the vicinity of the cold air outlet or the lower surface of the air conditioning plate 08, Since the temperature varies depending on various products such as fruits and vegetables stored in 04, not only the temperature cannot be measured accurately, but also the product hits the temperature sensor T when the product is taken in or out, and the product is damaged or dropped. As a result, the measurement function is lost.
[0009]
In addition, the attachment of the temperature sensor T as shown in FIG. 6A is difficult because the screw 012 has to be screwed from the bottom to the top.
[0010]
On the other hand, as shown in FIG. 6B, when the temperature sensor T is mounted on the air conditioning plate 08 inside the cold air outlet 05, it must be attached before the air conditioning plate 08 is attached. After the attachment, the removal requires disassembly, and the tip of the screw 012 protrudes to the inside of the cabinet through the air conditioning plate 08, which has a problem that becomes dangerous at the time of putting in and out the product.
[0011]
The present invention has been made in view of such a situation, and provides an open showcase in which a temperature sensor can be attached easily, and an accurate cold air temperature can be measured regardless of the increase or decrease of displayed products. It is intended to do.
[0012]
[Means for Solving the Problems]
In order to solve the above problems, the open showcase of the present invention forms a ventilation path between an inner box and an outer box that open upward, and a cooler and a blower are disposed in the ventilation path. In an open showcase that cools the interior by covering the part that opens upward with cold air blown out from the cold air outlet to the cold air inlet,
The cold air outlet has an outer case that forms an outer case that extends to the rear upper part of the showcase and an opening that opens forward between the inner case that forms the inner case, and the opening is formed in the outer case. The upper stage air conditioner plate extending forward from the lower case, the lower air conditioner plate extending forward from the inner case, and the intermediate air conditioner plate disposed between the two air conditioner plates, and the temperature sensor through the opening hole leading to the inside of the lower air conditioner plate A sensor mounting member that protrudes from the inside of the cabinet into a wind regulation path between the intermediate wind regulating plate and the lower wind regulating plate and is attached to the inner case that is the back of the inner box from the inside of the cabinet .
According to this feature, mounting the sensor mounting member on the inner side facilitates the mounting work, and the temperature sensor is arranged facing the air conditioning path near the cold air outlet, so that the displayed product Regardless of the increase / decrease in the temperature, the accurate cold air temperature can be measured, and appropriate temperature control in the cabinet can be performed. Furthermore, since the temperature sensor can easily face the air conditioning path through the opening hole, and the sensor attachment member can be attached to the rear surface of the inner box from the inside of the box, workability is good.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 is a cross-sectional view showing an open showcase in which the upper part of the present invention is opened, FIG. 2 is a partially cutaway perspective view showing a state in which a temperature sensor is mounted inside a cold air outlet, and FIG. 3 is a cold air in which a temperature sensor is mounted. FIG. 4 is a partial cross-sectional view showing the inside of the air outlet, and FIG. 4 is a partial perspective view showing another embodiment of the sensor mounting member.
[0016]
FIG. 1 shows a refrigerated open showcase 1 (hereinafter referred to as a showcase) to which the present invention is applied. This showcase 1 is provided with inner cases 2a to 2c formed as inner boxes inside the outer cases 4a to 4c forming an outer box made of a box-shaped heat insulating wall with a predetermined interval, The interior space surrounded by the inner cases 2a to 2c is used as a product storage section 3 having an open upper surface so that fruits and vegetables are displayed therein.
[0017]
In the showcase 1, cold air circulation paths 7a, 7b, and 7c are formed between the inner cases 2a to 2c constituting the product storage unit 3 and the outer cases 4a to 4c disposed on the outer side. Yes.
[0018]
By driving the blower 5 disposed in the cool air circulation path 7a on the bottom side, the cool air cooled through the cooler 6 is sucked into the cool air inlet 10 from the cool air outlet 8 on the upper side. By circulating in the direction of the arrow indicated by the dotted line in the figure, an air curtain is formed on the upper open surface of the showcase 1 so that the frozen food, fresh food, etc. in the product storage section 3 can be kept at a predetermined temperature. It has become.
[0019]
Moreover, a bottom panel 12a that is inclined inward and a front panel is formed at a lower portion of a base shelf 2b that constitutes a part of an inner case on which various products below the product storage unit 3 are placed. A bottom panel 12b that is gently inclined is provided. The troughs of the bottom panels 12a and 12b are provided with drainage ports (not shown) for discharging thawed water or accumulated debris when the cooler 6 is defrosted.
[0020]
Further, as shown in FIG. 2, the cold air outlet 8 has a ventilation path between the outer case 4 c and the inner case 2 c extending in the left-right direction at the rear upper part of the showcase 1 and opening forward. The upper and lower case air conditioning plates 8c and 8b extend forward from the upper edges of the inner and outer cases 2c and 4c, and the intermediate air conditioning plate 8a disposed between the two air conditioning plates 8c and 8b.
[0021]
The lower air conditioning plate 8b is formed with a rectangular opening 14 serving as a minimum opening that leads from the inside of the cabinet to the air conditioning path in the vicinity of the cold air outlet 8, and a temperature sensor 15 is disposed inside the cold air outlet 8. As shown, the sensor holding portion 16a of the sensor mounting member 16 holding the temperature sensor 15 faces the air conditioning path between the intermediate air conditioning plate 8a and the lower air conditioning plate 8b through the opening hole 14, and the mounting portion 16b of the sensor mounting member 16 Is fixed to the back wall 2c 'of the inner case 2c from the inner side via the screw 20.
[0022]
The temperature sensor 15 is formed in a cylindrical shape, and has a temperature measurement unit that can be electrically measured at one end, and a lead wire connected to a power source is provided at the other end. The temperature is sent as an electrical signal to a control unit (not shown), and the control unit sets an optimal set temperature that is preset in order to keep the product stored in the product storage unit 3 based on the transmitted measured temperature. And the cooler 6 is driven and controlled.
[0023]
The sensor mounting member 16 is constituted by a single strip-shaped member, and is provided with a sensor holding portion 16a that winds and holds the periphery of the cylindrical temperature sensor 15 at one end, and the temperature sensor 15 is wound. An attaching portion 16b is formed by drilling an insertion hole through which the screw 20 for attaching to the back wall 2c 'is inserted in the two folded and overlapped belt plates.
[0024]
According to the open showcase configured as described above, when the blower 5 in the cold air circulation path 7b is driven in order to keep the frozen food or fresh food in the product storage unit 3 at a predetermined temperature, As shown in FIG. 1, the cool air cooled by passing through the cooler 6 is blown out from the cool air outlet 8 at the rear upper part of the product storage unit 3 in the showcase, and the front ends of the inner and outer cases 2 a and 4 a on the front surface of the product storage unit 3. The air is sucked into the inside through the upper cold air inlet 10 and led to the blower 5 again.
[0025]
The cold air circulated through the cold air circulation paths 7a, 7b and 7c and discharged from the cold air outlet 8 is calculated by comparing the temperature measured by the temperature sensor 15 in the cold air outlet 8 with the set temperature, and the controller cools the cooler. By appropriately controlling 6, products such as fruits and vegetables stored in the product storage unit 3 are always kept at an appropriate temperature.
[0026]
And since the temperature sensor 15 is arrange | positioned in the air-conditioning path through which the cool air between the intermediate air-conditioning board 8a and the lower stage air-conditioning board 8b passes, it measures the exact temperature of cold air without being influenced at the time of display goods entering / exiting. It is possible to perform appropriate temperature control in the cabinet.
[0027]
Further, as shown in FIG. 3, the mounting portion 16b of the sensor mounting member 16 is fixed to the back wall 2c 'of the inner box inside the warehouse via screws 20, so that the temperature sensor 15 can be easily mounted. Since this screw 20 is attached from the inside of the cabinet, the tip of the screw does not protrude into the cabinet.
[0028]
Next, another embodiment of the present invention will be described with reference to FIG. FIG. 4 is a partial perspective view showing another embodiment of the sensor mounting member in which the temperature sensor is arranged so as to face the inside of the cold air outlet. In addition, the same code | symbol is attached | subjected to the same member as the structural member shown by the said embodiment, and the overlapping description is abbreviate | omitted.
[0029]
Reference numeral 22 shown in FIG. 4 indicates a sensor mounting member. The sensor mounting member 22 is folded by winding the temperature sensor 15 around one end as in the above-described embodiment. A sensor holding portion 22a is provided for tightening and holding, and an attachment portion 22b formed in a clip shape that is elastically deformable by folding back the other end side that is bent.
[0030]
And the sensor attachment member 22 comprised as mentioned above mounts | wears with the temperature sensor 15 by attaching the clip-shaped attachment part 22b to the lower air-conditioning board 8b of the cool air blower outlet 8 from the front in the state which hold | maintained the temperature sensor 15. Is attached so as to be orthogonal to the direction of blowing out the cold air.
[0031]
Therefore, according to the sensor attachment member 22 according to the present embodiment, the attachment portion 22b is configured in a clip shape and is detachably attached to the lower air conditioning plate 8b. Work becomes easy, and there is a degree of freedom in changing the mounting position, and maintenance of the temperature sensor 15 can be easily performed.
[0032]
【The invention's effect】
The present invention has the following effects.
[0033]
(A) According to the invention of claim 1, by attaching the sensor mounting member to the inside of the warehouse, the mounting work is easy, and the temperature sensor is arranged facing the air conditioning path near the cold air outlet. Therefore, the accurate cold air temperature can be measured regardless of the increase or decrease of the displayed products, and the appropriate temperature control in the cabinet can be performed. Furthermore, since the temperature sensor can easily face the air conditioning path through the opening hole, and the sensor attachment member can be attached to the rear surface of the inner box from the inside of the box, workability is good.
[Brief description of the drawings]
FIG. 1 is a sectional view showing an open showcase in which the upper part of the present invention is opened.
FIG. 2 is a partially cutaway perspective view showing a state in which a temperature sensor is mounted inside a cold air outlet.
FIG. 3 is a partial cross-sectional view showing the inside of a cold air outlet equipped with a temperature sensor.
FIG. 4 is a partial perspective view showing another embodiment of the sensor mounting member.
FIG. 5 is a cross-sectional view of a conventional open showcase with the top opened.
6A is a partial cross-sectional view of a conventional open showcase in which a temperature sensor is attached to the lower surface of the cold air outlet, and FIG. 6B is a portion of a conventional open showcase in which a temperature sensor is attached to the inside of the cold air outlet. It is sectional drawing.
[Explanation of symbols]
1 Showcase (open showcase)
2a Base shelf (inner case)
2b, 2c Inner case 2c 'Back wall 3 Commodity storage parts 4a-4c Outer case 5 Blower 6 Coolers 7a-7c Cooling air circulation path 8 Cooling air outlet 8a Intermediate air conditioning plate 8b Lower air conditioning plate 8c Upper air conditioning plate 10 Cold air inlet 12a 12b Bottom panel 14 Opening hole 15 Temperature sensor 16 Sensor mounting member 16a Sensor holding portion 16b Mounting portion 20 Screw 22 Sensor mounting member 22a Sensor holding portion 22b Mounting portion

Claims (1)

A ventilation path is formed between the inner box and the outer box that open upward, and a cooler and a blower are arranged in the ventilation path, and the cold air blown out from the cold air outlet to the cold air inlet of the ventilation path. In an open showcase that covers the part that opens upward with an air curtain and cools the interior,
The cold air outlet has an outer case that forms an outer case that extends to the rear upper part of the showcase and an opening that opens forward between the inner case that forms the inner case, and the opening is formed in the outer case. The upper stage air conditioner plate extending forward from the lower case, the lower air conditioner plate extending forward from the inner case, and the intermediate air conditioner plate disposed between the two air conditioner plates, and the temperature sensor through the opening hole leading to the inside of the lower air conditioner plate An open show characterized in that the sensor mounting member that protrudes from the inside of the chamber into the air conditioning path between the intermediate air conditioning plate and the lower air conditioning plate is attached to the inner case that is the back of the inner box from the inside of the chamber. Case.

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