WO2019008791A1

WO2019008791A1 - Differential pressure cooling device

Info

Publication number: WO2019008791A1
Application number: PCT/JP2017/040221
Authority: WO
Inventors: 奈央芝田; 利克菅原
Original assignee: 菱熱工業株式会社
Priority date: 2017-07-05
Filing date: 2017-11-08
Publication date: 2019-01-10
Also published as: JP2019015431A; JP6877039B2; KR20200026329A

Abstract

A differential pressure cooling device arranged inside a cooling chamber, comprising: a differential pressure chamber having a space defined therein and having a plurality of intake ports that communicate with the space and the outside and are formed at mutually different positions in the vertical direction; and a fan provided above the differential pressure chamber and making the space interior have a negative pressure. The differential pressure cooling device is characterized by the intake port that is positioned lower, among the plurality of intake ports, having a greater opening area than other intake ports positioned higher.

Description

Differential pressure cooling system

The embodiment of the present invention relates to a differential pressure cooling device which is disposed in a cooling chamber and cools an object to be cooled by a differential pressure.

Conventionally, a differential pressure chamber is provided in a cooling chamber such as a refrigerator or a freezer, and the object to be cooled such as processed food is efficiently cooled in the differential pressure chamber. The differential pressure chamber is configured to have a negative pressure inside, so that the cold air in the cooling chamber is drawn into the differential pressure chamber, and the object to be cooled is disposed so as to be exposed to the drawn cold air. As a result, the object to be cooled is efficiently cooled.

As a differential pressure cooling device that performs cooling by a differential pressure chamber, a fan having a negative pressure in the differential pressure chamber is provided above the differential pressure chamber, and an opening as an intake port is provided on the side surface of the differential pressure chamber. There is known a differential pressure cooling device which cools by disposing a carriage to be placed in contact with an opening, or by inserting a part thereof into a differential pressure chamber.

In addition, as such a differential pressure cooling device, a differential pressure includes a differential pressure ventilating chamber provided in a refrigerator, a fan, and a differential pressure sheet which seals the upper surface of the carriage which is abutted in front of the air inlet of the differential pressure ventilating chamber. Heated food rapid cooling device equipped with ventilation mechanism, temperature detection gas to detect temperature of contained food, dust collection filter for air passing between contained food, and ozone sterilizer to sterilize inside of refrigerator (E.g., Patent Document 1).

Japanese Utility Model Publication No. 6-59776

However, according to the above-described differential pressure cooling device, in the intake port provided on the side surface of the differential pressure chamber, the distance between the fan provided above the differential pressure chamber and each position of the intake port is not constant. There is a problem that the suction power of cold air becomes uneven.

Generally, the carriage on which the object to be cooled is placed is a so-called shelf carriage having a plurality of shelves vertically provided in multiple stages, and when the shelf carriage abuts on the above-described differential pressure cooling device, each shelf The object to be cooled placed on the will be unevenly cooled. Also, if the object to be cooled is food, in particular, uneven cooling may cause uneven quality.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a differential pressure cooling device which can inhale cold air more uniformly.

In order to solve the problems described above, an embodiment of the present invention is a differential pressure cooling device installed in a cooling chamber, in which a space is defined inside, and a plurality of intake ports communicating the space with the outside are A differential pressure chamber formed at mutually different positions in the vertical direction, and a fan provided above the differential pressure chamber to make the inside of the space negative pressure, and the air intake located at the lower side of the plurality of intake ports The mouth is characterized in that the opening area is larger than that of the other intake located above.

According to the present invention, it is possible to realize a differential pressure cooling device capable of suctioning cold air more uniformly.

It is a front view showing the composition of the differential pressure cooling device concerning an embodiment. It is a left side view showing the composition of a differential pressure cooling device. It is a top view which shows the structure of a differential pressure cooling device. It is a front view which shows the structure of a 1st panel. It is a front view which shows the structure of a 2nd panel. FIG. 2 is a cross-sectional view taken along the line A-A ′ shown in FIG. FIG. 2 is a cross-sectional view taken along the line B-B ′ shown in FIG. It is a front view which shows the structure of a trolley | bogie. It is a left side view showing composition of a bogie. It is a top view which shows the structure of a trolley | bogie. It is a figure which shows the differential pressure | voltage cooling device with which the trolley | bogie was installed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Configuration of differential pressure cooling device)
First, the configuration of the differential pressure cooling device according to the present embodiment will be described. FIG. 1 is a front view showing the configuration of the differential pressure cooling device according to the embodiment. FIG. 2 is a left side view showing the configuration of the differential pressure cooling device. FIG. 3 is a plan view showing the configuration of the differential pressure cooling device. In the following description, in the differential pressure cooling device, the side on which the air inlets (the first air inlet and the second air inlet) are formed is referred to as the front, and the opposite side is referred to as the back, the front and rear direction, and the direction perpendicular to the vertical direction. The description will be made as the left and right direction.

The differential pressure cooling device 1 according to the present embodiment is a device installed in a cooling chamber (not shown), such as a refrigerator or freezer, for efficiently exposing a cooled object placed on a carriage by differential pressure. It is. As shown in FIGS. 1 to 3, the differential pressure cooling device 1 includes left and right

side wall portions

11a and 11b, an intake portion 12 provided between the left and right

side wall portions

11a and 11b, and

side wall portions

11a and 11b. And a differential pressure portion 13 disposed on the intake portion 12.

Each of the

side wall portions

11a and 11b is formed in a substantially flat plate shape extending in the vertical direction and the front and rear direction, and is spaced apart in the horizontal direction by a predetermined distance so that flat portions face each other. The air intake portion 12 is a substantially rectangular parallelepiped member in which a space is formed inside as described later, and the

side wall portions

11a and 11b have side walls with a flat portion formed wide in the front-rear direction near the rear end portions. It is arrange | positioned so that it may be pinched | interposed between the part 11a and the side wall part 11b. The

side wall portions

11a and 11b and the intake portion 12 are arranged so as to be substantially U-shaped as a whole when viewed in the vertical direction (see FIG. 6). The differential pressure portion 13 is a substantially rectangular parallelepiped member in which a space is formed inside as described later, and is mounted on the

side wall portions

11a and 11b arranged in a substantially U-shape and the intake portion 12, The

side wall portions

11a and 11b, the intake portion 12, the differential pressure portion 13, and the installation surface S of the differential pressure cooling device 1 define a substantially rectangular parallelepiped space in which the side surface on the front side is open as a whole. Further, as will be described in detail later, the intake portion 12 and the differential pressure portion 13 constitute one differential pressure chamber.

The side wall portion 11a has, at its lower end, a caster 111a on the front side and a caster 111c on the rear side, and an adjuster 112a on the front side and an adjuster 112c on the rear side (see FIG. 3). Similarly, at the lower end of the side wall portion 11b, the caster 111b on the front side and the caster 111d on the rear side, and the adjuster 112b on the front side and the adjuster 112d on the rear side (see FIGS. 2 and 3). The differential pressure cooling device 1 can be easily moved parallel to the installation surface S by the castors 111a to 111d provided on the side wall portion 11a and the side wall portion 11b, and the side wall portion 11a and the side wall portion 11b It can be fixed to the installation surface S by the provided adjusters 112a to 112d.

As shown in FIG. 1, in the intake section 12, a first intake port 121 and a second intake port 122 are formed on the front side, and the first intake port 121 and the second intake port 122 are The second intake port 122 is formed below the first intake port 121 and has a rectangular shape similar to each other. Further, the first panel 15 is attached to the first intake port 121, and the second panel 16 is attached to the second intake port 122. The first panel 15 and the second panel 16 are attached to the first air inlet 121 and the second air inlet 122 respectively by the Kendon method.

As shown in FIG. 3, the differential pressure portion 13 is provided with a fan 17 on its upper surface, and the space in the differential pressure portion 13 communicates with the space of the intake portion 12 as described in detail later. It has become. The fan 17 operates to discharge the air in the differential pressure portion 13 and the intake portion 12 to the outside to make the inside of the differential pressure portion 13 and the intake portion 12 a negative pressure. The fan 17 is configured as a propeller fan in the present embodiment, but may be configured as another type of fan.

(Configuration of first panel and second panel)
Next, the configuration of the first panel and the second panel will be described. FIG. 4 is a front view showing the configuration of the first panel. FIG. 5 is a front view showing the configuration of the second panel.

As shown in FIG. 4, the first panel 15 has a plate-like portion 150 which is a thin plate-like member formed in alignment with the first intake port 121 of the intake portion 12. The two openings 151 are formed symmetrically in the vertical direction, and each opening 151 is fitted with a punching plate 151P in which a plurality of punched holes P1 having a predetermined diameter are formed.

Thus, the first panel 15 is configured to close the first air inlet 121 at a portion other than the punch hole P1, and the opening area of the first air inlet 121 is the area of all the punch holes P1. It is comprised so that it may be set as the total predetermined opening area.

In addition, the first panel 15 has a grip portion 153 a on the right side and a grip portion 153 b on the left side, which are respectively configured as handles when attaching and detaching the first intake port 121.

As shown in FIG. 5, the second panel 16 has a plate-like portion 160 which is a thin plate-like member formed in conformity with the second air inlet 122 of the air intake portion 12. An opening 161 at the center and two openings 162 whose opening area is smaller than the opening 161 and formed symmetrically in the vertical direction are respectively formed above and below the opening 161 in the center. The punch plate 161P in which a plurality of punch holes P2 having a diameter larger than the punch hole P1 is formed is fitted in the central opening 161. Similarly, in each of the two upper and lower openings 162, a punching plate 162P in which a plurality of punched holes P2 are formed is fitted.

Thus, like the first panel 15, the second panel 16 is configured to close the second air inlet 122 at a portion other than the punched hole P2, and the opening area of the second air inlet 122 is set to The area of all the punched holes P2 is configured to be a predetermined opening area, and the opening area of the second intake port 122 is larger than the opening area of the first intake port.

Further, like the first panel 15, the second panel 16 has a grip portion 163a on the right side and a grip portion 163b on the left side configured as handles for attaching and detaching the second intake port 122 respectively. .

(Internal configuration and operation of differential pressure cooling device)
Next, the internal configuration and operation of the differential pressure cooling device will be described. FIG. 6 is a cross-sectional view taken along the line AA 'shown in FIG. 1. Specifically, FIG. FIG. 7 is a cross-sectional view taken along the line BB 'shown in FIG. . In FIG. 7, the left side of the fan 17 is shown.

As shown in FIG. 6 and FIG. 7, a space 120 which is made negative pressure from the outside by the fan 17 is defined inside the intake unit 12, and the space 120 includes the first intake port 121 and the second intake port. By 122, it communicates with the outside. Since the first panel 15 and the second panel 16 are attached to the first intake port 121 and the second intake port 122 respectively, the space 120 is formed by the two openings 151 formed in the first panel 15 and the second opening 151. The two panels 16 communicate with the outside through the opening 161 and the two openings 162.

As shown in FIG. 7, a part of the fan 17 is accommodated in the differential pressure portion 13, and a space 130 which is negative pressure from the outside by the fan 17 is defined, and the space 130 is a fan It communicates with the outside through 17.

Further, the communication hole 123 is formed on the upper surface of the intake portion 12 and the communication hole 131 corresponding to the communication hole 123 is formed on the bottom surface of the differential pressure portion 13, and the space 120 of the intake portion 12 and the space of the differential pressure portion 13 It communicates with 130. As a result, when the space 130 becomes negative pressure, the space 120 also becomes negative pressure, and accordingly, the two air intake ports 151, the air intake ports 161, and the two air intake ports 162 are provided outside the differential pressure cooling device 1, ie, the cooling chamber. Cold air is drawn into the

spaces

120 and 130. Here, by arranging the carriage at the arrangement position T (see FIG. 3) surrounded by the

side wall portions

11a and 11b and the intake unit 12, cool air can be efficiently applied to the object to be cooled placed on the carriage it can.

Further, as described above, by making the opening area of the

openings

161 and 162 in the second intake port 122 larger than the opening area of the intake port 151 in the first intake port 121, cool air to the

spaces

120 and 130 in the vertical direction The difference between the suction forces can be reduced, and thus the suction force of the cold air in the vertical direction can be made more uniform.

In addition, since cold air is taken in through the punching plate 151P and the

punching plates

161P and 162P at the first air inlet 121 and the second air inlet 122, respectively, the wind speed of the cold air can be made more uniform. Furthermore, by making the diameter of the punched hole P2 in the second panel 16 attached to the second intake port 122 larger than the diameter of the punched hole P1 in the first panel 15 attached to the first intake port 15, the space 120 in the vertical direction And 130 can reduce the difference in the wind speed of the cold air taken in, and in turn can make the wind speed of the cold air in the vertical direction more uniform.

Next, the carriage on which the object to be cooled by the differential pressure cooling device is placed will be described. FIG. 8 is a front view showing the configuration of the carriage. FIG. 9 is a right side view showing the configuration of the carriage. FIG. 9 is a left side view showing the configuration of the carriage. FIG. 10 is a plan view showing the configuration of the carriage. FIG. 10 is a view showing a differential pressure cooling device in which a carriage is installed. The differential pressure cooling device in FIG. 10 is shown by the same cross section as that shown in FIG.

As shown in FIGS. 8 to 10, the carriage 2 used for the differential pressure cooling device 1 is a so-called shelf carriage and is formed in a substantially rectangular parallelepiped shape as a whole, and forms a side portion of the rectangular parallelepiped in the front-rear direction And a plurality of bar members formed by combining a plurality of rod-like members facing in the left-right direction and the up-down direction, and further formed in a flat plate shape and supported at mutually different positions in the And a mounting unit 21. A bat 3 as a container for accommodating the object C to be cooled is placed on the placement unit 21. Further, castors 201a to 201d are provided at four corners of the lower end of the frame 20, and the carriage 1 can move on the installation surface S by these casters 201a to 201d.

As shown in FIG. 11, the carriage 1 configured in this way is moved to the above-mentioned arrangement position T (see FIG. 3) with the front-rear direction thereof aligned with the front-rear direction of the differential pressure cooling device 1. The

side walls

11a and 11b, the intake section 12, the differential pressure section 13, and the installation surface S of the differential pressure cooling device 1 are accommodated in a space defined so as to be open only at the front. Here, when the fan 17 of the differential pressure cooling device 1 is operated, the air in the cooling chamber is sucked through the carriage 1 into the

spaces

120 and 130, whereby the object C to be cooled placed on the carriage 1 is It will be cooled rapidly.

Further, the difference in the flow rate of cold air passing through the placement portions 21 aligned vertically in the carriage 1 is reduced by the opening area of each of the first intake port 121 and the second intake port 122 described above, and the difference in wind speed Are also reduced by the punched holes P1 and P2. Further, when the carriage 1 is disposed at the placement position T, the

side wall portions

11a and 11b are located on the side of the carriage 1 and the differential pressure portion 13 is located above the carriage 1, so more cold air is generated. It will pass the dolly 1.

In the present embodiment, the differential pressure portion 13 in which the fan 17 is provided and the intake portion 12 in which the first intake port 121 and the second intake port 122 are formed, the pressure difference between the space 120 of the intake portion 12 and the differential pressure In this embodiment, the fan 17 is provided above the one differential pressure chamber in which the space is defined, and the first intake port 121 and the second intake port 122 are provided laterally. You may form Further, in the present embodiment, although the two intake ports of the first intake port 121 and the second intake port 122 are formed, a plurality of intake ports are formed at mutually different positions in the vertical direction, and the lower intake The opening area may be larger than the mouth.

The present invention can be implemented in other various forms without departing from the gist or main features thereof. Therefore, the foregoing embodiments are merely illustrative in every respect and should not be construed as limiting. The scope of the present invention is indicated by the claims, and is not restricted at all by the text of the specification. Moreover, all variations, improvements, alternatives and modifications that fall within the equivalent scope of the claims are all within the scope of the present invention.

1 Differential pressure cooling device 12 Intake section (differential pressure chamber)
13 Differential pressure section (differential pressure chamber)
17 fan 120 space 121 air intake 122 air intake 130 space

Claims

A differential pressure cooling device installed in a cooling chamber, wherein
A differential pressure chamber in which a space is defined inside and a plurality of intake ports communicating the space and the outside are formed at mutually different positions in the vertical direction;
A fan provided above the differential pressure chamber to make the space negative pressure;
The differential pressure cooling device according to claim 1, wherein in the plurality of air inlets, the air inlet located at the lower side has a larger opening area than the other air inlets located at the upper side.
The differential pressure cooling device according to claim 1, wherein each of the plurality of air inlets is provided with a punching plate in which a plurality of punched holes are formed.
A punched hole formed in a punching plate provided in a lower intake port is formed to have a larger diameter than punch holes formed in another punching plate provided in another upper intake port. The differential pressure cooling device according to claim 2, characterized in that: