JP2002267327A - Cooler refrigerator with air filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cooler refrigerator having such a structure as an air filter can be replaced easily. SOLUTION: A machine room 12 for installing an air-cooled condenser 13 is provided on the under side of a refrigeration showcase 10 and when an air filter 17 is fixed to the machine room 12, the planar air filter 17 is inserted perpendicularly to the machine room 12. A filter guide 16 to which the air filter 17 can be fixed is thereby fixed to a front panel 14 perpendicularly and removably and the slit-like insertion opening 16a of the filter guide 16 is tapered to decrease the width in the inserting direction of the filter. Furthermore, a groove 16b is made at the upper end part of the slit-like insertion opening 16a while being shifted to the left and a protrusion 17a is provided at the upper end edge of the air filter 17 while being shifted to the left in the widthwise direction thus preventing reverse insertion of the air filter 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling storage (including a freezer and a refrigerated showcase) for cooling a condenser with air passed through a filter, and more particularly to a cooling with an air filter in which the filter can be easily replaced. It concerns storage.

[0002]

2. Description of the Related Art FIG. 6 is an exploded perspective view of a machine room portion of a conventional refrigerated showcase. A machine room 3 is provided below the refrigerating room to which the door 2 of the refrigerating showcase 1 is attached, and a machine such as an air-cooled condenser 4 is accommodated therein. A front panel 5 is screwed to the front opening of the machine room 3 with screws 6 or the like. When a condenser cooling fan (not shown) installed in the machine room 3 is operated, air is sucked into the machine room 3 from the air inlet 7 of the front panel 5. The air-cooled condenser 4 is disposed so that its air suction surface is directed to the side substantially orthogonal to the front panel 5. An air filter 8 for removing contained dust is detachably mounted.
In FIG. 6, reference numeral 9 denotes an exhaust hole.

[0003]

In the conventional cooling storage with air filter, when the air filter 8 is replaced,
The replacement cannot be performed unless the front panel 5 is removed. For this reason, replacement of the air filter 8 becomes troublesome, and as a result, the operation is often continued for a long time with the dirty air filter 8, and a problem that the cooling efficiency is lowered is pointed out.

[0004]

SUMMARY OF THE INVENTION The present invention has been proposed to solve the above problems inherent in a cooling storage with an air filter according to the prior art. Another object of the present invention is to provide a cooling storage with an air filter in which the air filter can be easily replaced.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems and achieve the intended object, a cooling storage with an air filter according to the present invention comprises: a machine room in which an air-cooled condenser is installed; A panel that closes the panel, a plug-in type air filter that is vertically and removably attached to the panel, and a filter guide that is provided on the panel and that forms a slit-shaped insertion port for the air filter. The filter guide and the air filter are provided with a reverse insertion preventing mechanism.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a cooling storage with an air filter according to the present invention will be described below with reference to the accompanying drawings by way of preferred embodiments.

FIG. 1 is an exploded view of a machine room portion of a refrigerated showcase with an air filter according to one embodiment of the present invention. In the refrigerated showcase 10 with an air filter, a machine room 12 is provided below the refrigerated room opened and closed by a door 11, and equipment such as an air-cooled condenser 13 and a condenser fan is provided in the machine room 12. Are stored.

A front panel (panel) 14 is screwed to the front opening of the machine room 12 via a plurality of decorative screws 15. When the condenser fan in the machine room 12 operates, external air is sucked into the machine room 12 from a plurality of intake holes 14a formed in the front panel 14,
The apparatus such as the air-cooled condenser 13 is configured to be air-cooled. Note that the air-cooled condenser 13 is arranged such that its air suction surface is directed to a side (right side in FIG. 1) substantially orthogonal to the front panel 14. In the present embodiment, a vertically long filter guide 16 is detachably mounted on the right side of the front panel 14 in FIG. 1 and is detachably mounted. The plug-in type air filter 17 is detachably mounted via the filter guide 16. In this embodiment, two rows of holes located on the right side of the center of the front panel 14 in the width direction of FIG. 1 are intake holes 14a, and two rows of holes located on the left side are exhaust holes 14c in FIG. is there.

FIG. 2 is a perspective view of a filter guide 16 which is detachably fixed to the front panel 14, and the filter guide 16 is shown in FIG.
The cross section taken along the line A is shown in the lower part of FIG. This filter guide 1
6 is formed in a long rectangular cylindrical shape, a concave portion 20 is formed on the front surface thereof, and the shape of the entrance hole of the slit-shaped insertion opening 16a which opens on the back side of the concave portion 20 is the left and right inner surfaces thereof. Has a tapered shape so that it becomes narrower toward the back side in the filter insertion direction. After the width of the slit-like insertion opening 16a is reduced to a dimension a (this dimension a will be described later), the space 16a 'becomes wider. The front panel 14 to which the filter guide 16 is attached is provided with a rectangular square hole 14b. The filter guide 16 is fitted and pushed into the square hole 14b, whereby the filter guide 16 is mounted and fixed to the front panel 14. A flange 21 is provided at the front of the filter guide 16, and a plurality of engaging pieces 22 are vertically separated from both sides of the front of the filter panel 16 by the thickness of the front panel 14. It is protruding. When the filter guide 16 is pushed into the square hole 14 b of the front panel 14, the positioning is performed by sandwiching the front panel 14 between the flange portion 21 and the engagement piece 22.

Although the front panel 14 is made of a single metal plate, the effect of reducing the bending of the front panel 14 by mounting the filter guide 16 is that the filter guide 16 is a reinforcing material. Also works as Furthermore, the square hole 14 opened in the front panel 14
If the air filter 17 is directly inserted into the square hole 14b, a finger hits a corner of the square hole 14b. By attaching a filter guide 16 made of resin to the square hole 14b of the front panel 14, the square hole 14b becomes Since it is covered with the flange portion 21, it is possible to prevent the finger from directly hitting the corner of the square hole 14b.

As shown in FIG. 2, the upper end of the slit-shaped insertion opening 16a of the filter guide 16 has a concave groove 16b which is unevenly distributed in one of the width directions (left and right directions), in this example, the left direction.
Is formed upward, and this constitutes one of the reverse insertion preventing mechanisms of the air filter 17. For the purpose of preventing reverse insertion only, the effect is the same even if the direction in which the concave groove 16b is provided is provided on one of the side portions of the slit-shaped insertion port 16a. However, in this case, the square hole 14b for mounting the filter guide, which is opened on the front panel 14 side, must also be formed with a bulged side, which is troublesome and increases the cost. In addition, the filter mounting square hole 14b becomes large in the lateral direction at that portion, and a finger or the like may enter. However, by providing the concave groove 16b in the vertical direction, in addition to preventing reverse insertion, the width of the filter guide mounting square hole 14b provided on the front panel 14 can be reduced over the entire length. Moreover, it is not necessary to provide a concave portion corresponding to the concave groove 16b in the square hole 14b for mounting the filter guide, and the square hole 14b can be formed into a completely long rectangular shape, and the processing of the front panel 14 becomes easy. .

At the back of the lower end of the filter guide 16,
As shown in FIG. 5, a concave portion 18 is formed. The concave portion 18 allows the filter guide 16 to be properly
1, when the panel 14 is attached to the opening of the machine room in FIG. 1, the recess 18 escapes the front end surface (inside end of the interior) 12a of the bottom wall of the machine room 12. The mounting of the front panel 14 to the opening of the machine room is not hindered.

If the attachment of the filter guide 16 to the front panel 14 is upside down, when the panel 14 is attached to the opening of the machine room, the upper end back portion 18a (FIG. 2) of the filter guide 16 is moved downward. It abuts against the front end surface 12a of the bottom wall, and the front panel 14 cannot be attached to the opening of the machine room. That is, the recess 18 functions as a means for preventing the filter guide 16 from being vertically inserted into the front panel 14.

As shown in FIG. 1, the air filter 17 is provided on the back side of a front plate 23 which is set to have an outer size that can be accommodated in the recess 20 of the filter guide 16. A main body 24 formed in a rectangular shape having a size capable of covering the suction surface is protrudingly provided. A mesh 25 of a required mesh is stretched over the main body 24 and the left side in the width direction along the upper edge thereof (the concave groove 1 of the filter guide 16).
On the side corresponding to 6b), there is formed a ridge 17a that constitutes the other side of the reverse insertion prevention mechanism. Therefore, the air filter 17 is connected to the slit-shaped insertion opening 16a of the filter guide 16.
When the air filter 17 is inserted into the air filter 17, the protrusion 17a and the concave groove 16b of the filter guide 16 are aligned with each other so that the air filter 17 is not obstructed. However, when the air filter 17 is turned upside down, the air filter 17 cannot be inserted into the slit-shaped insertion opening 16a of the filter guide 16, and the reverse insertion is prevented. The handle 17 is provided on the front surface of the front plate 23.
b is provided.

The upper part of FIG. 3 is a sectional view taken along the line BB of FIG.
At a position close to 3, a projection 17c protruding to the side surface is provided. Assuming that a dimension obtained by adding the height of the projection 17c to the width of the main body 24 is b, the dimension b is "a <b" with respect to the minimum width dimension a at the slit-shaped insertion opening 16a of the filter guide 16. Set in a relationship.

As a result, when the air filter 17 is inserted into the slit-shaped insertion opening 16a of the filter guide 16, the projection 17c stops at a position where it comes into contact with the tapered surface of the insertion opening 16a. From that position, apply more force to the air filter 17
Is inserted, the filter guide 16 made of resin is slightly elastically deformed, and the projection 17c is separated from the tapered surface to the back side and is detachably engaged with the step 26 with the wide space 16a ′, The air filter 17 is locked by the filter guide 16. Therefore, the air filter 17 does not easily fall off the filter guide 16. When pulling out the air filter 17 from the filter guide 16, the air filter 17 can be pulled out without applying force by pulling the air filter 17 only to the position where the projection 17 c is separated from the step portion 26 at first. The protrusion 1 of the air filter 17
When the air filter 17 contacts the tapered surface of the filter guide 16 slightly, the air filter 17 is slightly inclined with the contact portion between the projection 17c and the tapered surface as a fulcrum. The dimension of the portion where the projection 17c is formed in the direction parallel to the dimension a is slightly shorter than the dimension of the filter 17a.
7 can be easily inserted into the lock position.

FIG. 5 is a perspective view of the lower end of the filter guide 16. A tongue 16c projecting downward is formed at the lower end of the filter guide 16, and the back surface (panel facing surface) C of the tongue 16c is in close contact with the front surface of the front panel 14. . In the present embodiment, a recess 19 is formed on the back surface in a direction away from the front panel 14 so that the entire back surface of the tongue portion 16c does not adhere to the panel 14, and the cross-sectional shape of the tongue portion 16c is reduced. It has a shallow concave shape.

When the entire back surface of the tongue portion 16c is brought into close contact with the front panel 14 without providing the depression 19 in the tongue portion 16c, water dripping from above enters the contact surface, and due to the surface tension, the water adheres to the long contact surface. Water will stay. This causes gap corrosion. However, in this embodiment, since the depression 19 is provided, water does not stay in this portion, and the water is quickly discharged, so that corrosion can be avoided. When removing the filter guide 16 from the front panel 14, the fitting between the filter guide 16 and the front panel 14 can be easily removed by inserting a tool tip such as a flathead screwdriver into the recess 19.

[0019]

Next, the operation of the refrigerated showcase with an air filter according to the present embodiment will be described. When assembling the refrigerated showcase 10, even if the filter guide 16 is turned upside down and mounted on the front panel 14, the upper end back 18a of the back of the filter guide 16 interferes with the end face of the storage wall (bottom wall front end face 12a). Can not be installed. This makes incorrect assembly impossible.

When the air filter 17 mounted on the filter guide 16 is to be replaced, the used air filter 17 is removed from the filter guide 16. Then, a new air filter 17 is inserted into the slit-shaped insertion opening 16a of the filter guide 16. At this time,
Even if the used air filter 17 is erroneously turned upside down to be inserted into the slit-shaped insertion opening 16a of the filter guide 16, it cannot be inserted because of the reverse insertion prevention mechanism (16b, 17a). That is, the surface of the air filter 17 to which dust adheres is the air-cooled condenser 13.
Therefore, it is possible to prevent dust from being sucked into the condenser 13 before mounting.

When a new air filter 17 is inserted into the filter guide 16 in a normal state without being reversely inserted, the projection 17c provided on the side of the air filter 17 comes into contact with the tapered surface of the slit-like insertion port 16a (FIG. 4). reference). When inserted with a little more force from this contact position, the protrusion 17
c is separated from the tapered surface and is locked in the step 26 with the wide space 16a ′, whereby the air filter 17
Are locked to the filter guide 16. Since the air filter 17 can be locked to the filter guide 16 in this manner, the mounting structure of the air filter 17 can be simplified. In addition, the protrusion 17 of the air filter 17
When c contacts the tapered surface of the filter guide 16,
When the air filter 17 is slightly inclined with the contact portion between the projection 17c and the tapered surface as a fulcrum, the filter 17 can be easily inserted into the locked position.

In the case where the refrigerated showcase 10 is washed with water or the like, if water is applied to the front panel 14 on which the filter guide 16 is mounted, water may enter the gap between the two. This water flows down little by little according to gravity, and finally accumulates at the lower end of the filter guide 16. The smaller the gap between the lower end and the front panel 14 is, the smaller the surface tension of water acting on the gap becomes than the gravity, and the water stays in the gap longer, causing corrosion. However, the filter guide 1 of the present embodiment
Since the tongue 16c provided at the lower end portion 6 has a depression 19 on the front panel contact surface (see FIG. 5), water entering this depression 19 is quickly discharged by gravity to suppress corrosion. Is done. As described above, since the filter guide 16 is prevented from being mounted upside down with respect to the front panel 14 by the reverse insertion preventing means (18), the depression 19 is always located on the lower side and water Suitable discharge processing is performed.

As described above, the refrigerated showcase 10 with the air filter according to the present embodiment does not need to remove or attach the front panel 14 when exchanging the plug-in type air filter 17, and vertically attaches to and detaches from the front panel 14. Can be installed as much as possible. In addition, since the mechanism for locking the air filter 17 is extremely simple, the air filter 17 can be replaced frequently. Therefore, the cooling efficiency of the cooling device is improved as compared with the operation with the clogged air filter 17, and energy can be saved. Further, since the air filter 17 is prevented from being reversely inserted, the air-cooled condenser 13 is not clogged and the inside of the machine room 12 is not stained. Furthermore, since a mechanism is provided for quickly discharging water even when water enters the gap between the filter guide 16 and the front panel 14, corrosion can be easily avoided.

In the above-described embodiment, as the mechanism for preventing the filter guide and the air filter from being reversely inserted, a case has been described in which a concave groove is formed at the upper end of the filter guide and a ridge is provided at the upper end edge of the air filter. However, the present invention is not limited to this. For example, the members forming the grooves and the ridges may be reversed, or a reverse insertion prevention mechanism may be formed at the lower ends of the guide and the filter. Alternatively, the reverse insertion prevention mechanism may be provided at the center or the like in the width direction.

[0025]

As described above, according to the cooling storage with an air filter according to the present invention, the plug-in type air filter is vertically mounted and detachably inserted into the panel. Eliminates the need to remove and attach machine room panels during replacement. Also,
Since the air filter cannot be inserted upside down, the dust filter attached to the air filter is sucked into the machine room when the used dirty air filter is inserted in the panel by mistake with a new air filter. There is no fear.

Further, if the portion of the lower end of the filter guide that is in close contact with the front panel remains narrow, the water that has entered this gap will remain in the gap for a long time, causing corrosion. Is recessed so as not to be in close contact with the panel, so that water does not stay here and crevice corrosion is prevented. In addition, by using this recess, the filter guide can be easily removed from the panel and replaced.

By making the slit-shaped insertion opening of the filter guide tapered and widening the entrance, mounting of the air filter becomes easy, and a projection is provided on the air filter.
The air filter can be easily locked to the filter guide by using a configuration in which the projection is engaged with the step of the filter guide.

Furthermore, when the filter guide is attached to the panel, the reverse insertion preventing means is provided, so that there is no possibility that the filter guide is mistakenly turned upside down.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a machine room portion of a refrigerated showcase with an air filter according to an embodiment of the present invention.

FIG. 2 is a perspective view of the filter guide shown in FIG.

FIG. 3 is a sectional view of a main part when an air filter is inserted into the filter guide shown in FIG.

FIG. 4 is a cross-sectional view of a filter guide inlet when an air filter is inserted into the filter guide shown in FIG. 1;

FIG. 5 is a perspective view of a lower end portion of the filter guide shown in FIG.

FIG. 6 is an exploded perspective view of a machine room portion of a conventional refrigerated showcase with an air filter.

[Explanation of symbols]

Reference Signs List 12 machine room, 12a front end face of bottom wall (end face of storage wall), 13 air-cooled condenser 14 front panel (panel), 16 filter guide 16a slit-shaped insertion opening, 16b groove (reverse insertion prevention mechanism) 17 air filter, 17a Ridge (reverse insertion prevention mechanism), 1
7c projection 18 recess (reverse insertion prevention means), 26 steps

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Koji Ueno 3-16 Hoshizaki Electric Co., Ltd., Sakaemachi Minamikan, Toyoake City, Aichi Prefecture (72) Inventor Eiji Suzuki 3rd 16-16 Sakaemachi Minamikan, Toyoake City, Aichi Prefecture Hoshizaki Electric Co., Ltd. Inside

Claims (6)

[Claims] A machine room (1) in which an air-cooled condenser (13) is installed.
2), a panel (14) for closing the machine room (12), and the panel
A plug-in type air filter (17) vertically and vertically detachably attached to (14), and a slit-shaped insertion port (16a) of the air filter (17) provided on the panel (14). Forming a filter guide (16), the filter guide (16)
A cooling storage with an air filter, characterized in that a reverse insertion prevention mechanism (16b, 17a) is provided between the air filter (17) and the air filter (17). 2. The reverse insertion preventing mechanism includes a groove (16b) provided at an upper end or a lower end of the slit-like insertion port (16a).
2. The cooling storage unit with an air filter according to claim 1, comprising: a ridge provided at an upper edge or a lower edge of the air filter, the ridge being aligned with the concave groove. 3. The cooling storage with an air filter according to claim 1, wherein a panel facing surface of a part which is in close contact with the panel (14) and hangs down from a lower end of the filter guide (16) is depressed. 4. The filter guide (16) has a slit-shaped insertion opening (16a) formed in a tapered shape with a narrow width in the filter insertion direction, and is provided on the back side of the tapered surface. Projection that is detachably engaged with the stepped part (26)
The cooling storage with an air filter according to any one of claims 1 to 3, wherein (17c) is provided in the air filter (17). 5. The cooling device with an air filter according to claim 1, wherein the filter guide (16) is provided with a reverse insertion preventing means (18) when the filter guide (16) is attached to the panel (14). Storage. 6. The reverse insertion preventing means is a concave portion (18) provided on a back portion of the filter guide (16) and escaping an end surface (12a) of the storage wall with which the panel (14) abuts. Cooling storage with air filter.