JP4583636B2 - Cooling storage with air filter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cooling storage (including a freezer and a refrigerated showcase) that cools a condenser with air that has passed through a filter, and more particularly to a cooling storage with an air filter that facilitates filter replacement.
[0002]
[Prior 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 machinery 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 activated, air is sucked into the machine room 3 from the intake hole 7 of the front panel 5. The air-cooled condenser 4 is arranged with its air suction surface directed to a side substantially orthogonal to the front panel 5, and air sucked from the intake hole 7 is placed on the air suction surface. An air filter 8 for removing dust contained therein is detachably mounted. In FIG. 6, reference numeral 9 denotes an exhaust hole.
[0003]
[Problems to be solved by the invention]
The conventional cooling storage with an air filter cannot be replaced unless the front panel 5 is removed when the air filter 8 is replaced. For this reason, it is pointed out that the replacement of the air filter 8 becomes troublesome, and as a result, the dirty air filter 8 often continues to operate for a long time, resulting in a decrease in cooling efficiency.
[0004]
OBJECT OF THE INVENTION
The present invention has been proposed in view of the above-mentioned drawbacks inherent in a cooling storage with an air filter according to the prior art, and it has been proposed to suitably solve this problem, and the air filter can be replaced without removing the front panel. An object of the present invention is to provide a cooling storage with an air filter that is easy to handle.
[0005]
[Means for Solving the Problems]
In order to solve the above problems and achieve the intended purpose, a cooling storage with an air filter according to the present invention,
A machine room in which an air-cooled condenser is installed, a metal panel that closes the machine room, a resin filter guide that is provided in a square hole of the panel and forms a slit-like insertion port, and the slit-like In a cooling storage with an air filter provided with an insertion type air filter vertically and detachably attached to an insertion port, and provided with a reverse insertion prevention mechanism in the filter guide and the air filter,
The reverse insertion prevention mechanism is configured by a concave groove provided at an upper end portion or a lower end portion of the slit-like insertion opening, and a ridge provided at an upper end edge or a lower end edge of the air filter and aligned with the concave groove. The
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, a preferred embodiment of the cooling storage with an air filter according to the present invention will be described below with reference to the accompanying drawings.
[0007]
FIG. 1 is an exploded view of a machine room portion of a refrigerated showcase with an air filter according to an embodiment of the present invention. The refrigerated showcase 10 with an air filter is provided with a machine room 12 below a 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. Kind is stored and installed.
[0008]
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 is activated, external air is sucked into the machine room 12 from a plurality of intake holes 14a formed in the front panel 14, and the devices such as the air-cooled condenser 13 are air-cooled. Configured to do. The air-cooled condenser 13 is arranged in a state where the air suction surface is directed to the side (right side in FIG. 1) substantially orthogonal to the front panel 14. Further, in the present embodiment, a vertically long filter guide 16 is detachably attached to the right side of the front panel 14 in FIG. 1, and the difference disposed corresponding to the air suction surface of the air-cooled condenser 13. The built-in air filter 17 is detachably mounted via the filter guide 16. In this embodiment, in FIG. 1, the two rows of hole groups located on the right side across the center in the width direction of the front panel 14 are the intake holes 14a, and the two rows of hole groups located on the left side are the exhaust holes 14c. is there.
[0009]
FIG. 2 is a perspective view of the filter guide 16 that is detachably fixed to the front panel 14, and a cross section taken along the line AA is shown in the lower part of FIG. This filter guide 16 is formed in a cylindrical shape having a long rectangular shape, and a recessed portion 20 is formed on the front surface thereof, and an inlet hole shape of the slit-shaped insertion port 16a opened on the back side of the recessed portion 20 is: The left and right inner surfaces are tapered so that they become narrower toward the back side in the filter insertion direction. Moreover, after the width of the slit-like insertion port 16a is reduced to a dimension a (this dimension a will be described later), a wide space 16a ′ is formed. The front panel 14 to which the filter guide 16 is attached is provided with a rectangular square hole 14b, and the filter guide 16 is fitted and fixed to the front panel 14 by fitting and pushing the filter guide 16 into the square hole 14b. A flange portion 21 is provided at the front portion of the filter guide 16, and a plurality of engagement pieces 22 are vertically spaced on both side surfaces separated from the flange portion 21 by the thickness of the front panel 14. Projecting. When the filter guide 16 is pushed into the square hole 14b of the front panel 14, the front panel 14 is sandwiched between the flange portion 21 and the engagement piece 22 so as to be positioned.
[0010]
The front panel 14 is composed of a single metal plate, but the effect of reducing the bending of the front panel 14 by mounting the filter guide 16, that is, the filter guide 16 also functions as a reinforcing material. To do. Further, when the air filter 17 is directly inserted into the square hole 14b formed in the front panel 14, a finger hits the corner of the square hole 14b. The filter guide 16 made of resin is in contact with the square hole 14b of the front panel 14. Since the square hole 14b is covered with the flange portion 21, the finger can be prevented from directly hitting the corner of the square hole 14b.
[0011]
As shown in FIG. 2, the upper end of the slit-like insertion port 16a of the filter guide 16 is provided with a concave groove 16b that is unevenly distributed in the width direction (left-right direction), in this example, leftward in this example. This constitutes one of the reverse insertion prevention mechanisms of the air filter 17. For the purpose of preventing reverse insertion, 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-like insertion port 16a. However, if it does in this way, the square hole 14b for filter guide attachment opened to the front panel 14 side must also open the hole bulged to the side, and since it is troublesome, cost will increase. Further, the square hole 14b for attaching the filter becomes larger in the horizontal direction at the portion, and there is a possibility that 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 square hole 14b for mounting the filter guide provided in the front panel 14 can be reduced over the entire length. In addition, 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, which facilitates the processing of the front panel 14. .
[0012]
As shown in FIG. 5, a recess 18 is formed in the lower back portion of the filter guide 16. When the filter guide 16 is normally attached to the front panel 14 in FIG. 1, the concave portion 18 is formed at the front end surface of the bottom wall of the machine room 12 (see FIG. 1) when the panel 14 is attached to the machine room opening. The recess 18 escapes through the inner end surface 12a, so that the front panel 14 is not hindered from being attached to the machine room opening.
[0013]
If the filter guide 16 is attached to the front panel 14 upside down, when the panel 14 is attached to the opening of the machine room, the upper back 18a (FIG. 2) of the filter guide 16 is located at the front end of the bottom wall. The front panel 14 is in contact with the surface 12a and cannot be attached to the opening of the machine room. That is, the concave portion 18 functions as an upside down prevention means for the filter guide 16 with respect to the front panel 14.
[0014]
As shown in FIG. 1, the air filter 17 has an air suction surface of the air-cooled condenser 13 on the back side of the front plate 23 set to an outer dimension that can be accommodated in the recessed portion 20 of the filter guide 16. A main body 24 formed in a rectangular shape with a size that can be covered is projected. A mesh 25 of a required mesh is stretched on the main body 24, and the other side of the prevention mechanism is prevented from being inserted reversely on the left side in the width direction (the side corresponding to the recessed groove 16b of the filter guide 16) along the upper edge. Constituent ridges 17a are formed. For this reason, when the air filter 17 is inserted into the slit-like insertion port 16a of the filter guide 16, the ridges 17a and the concave grooves 16b of the filter guide 16 are aligned with each other so that the insertion of the air filter 17 is not hindered. However, when the air filter 17 is turned upside down, the air filter 17 cannot be inserted into the slit-like insertion port 16a of the filter guide 16, and reverse insertion is prevented. A handle portion 17 b is provided on the front surface of the front plate 23.
[0015]
The upper part of FIG. 3 is a cross-sectional view taken along the line BB of FIG. 1, and a protrusion 17c protruding to the side surface is provided at a position close to the front plate 23 in the main body 24 of the air filter 17. When the dimension obtained by adding the height of the protrusion 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 in the slit-like insertion port 16a of the filter guide 16. Set in a relationship.
[0016]
Accordingly, when the air filter 17 is inserted into the slit-like insertion port 16a of the filter guide 16, the protrusion 17c stops at a position where it abuts against the tapered surface of the insertion port 16a. When the air filter 17 is inserted with further force from that position, the resin filter guide 16 is slightly elastically deformed, and the projection 17c is spaced away from the taper surface to the back side to form a step 26 with the wide space 16a ′. The air filter 17 is locked to the filter guide 16 by being detachably locked to the filter guide 16. Therefore, the air filter 17 is not easily detached from 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 any force if it is pulled with a force only until the protrusion 17 c is separated from the step portion 26. When the projection 17c of the air filter 17 contacts the tapered surface of the filter guide 16, the air filter 17 is slightly inclined with the contact portion between the projection 17c and the tapered surface as a fulcrum, so that the slit insertion of the filter guide 16 is performed. The dimension in the direction parallel to the dimension a at the portion where the projection 17c is formed is slightly shorter than the minimum width dimension a in the opening 16a, and the filter 17 can be easily inserted into the lock position.
[0017]
FIG. 5 is a perspective view of the lower end portion 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 that is recessed in the direction away from the front panel 14 is formed on the back surface 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 It has a shallow concave shape.
[0018]
When the entire back surface of the tongue portion 16c is in close contact with the front panel 14 without providing the recess 19 in the tongue portion 16c, the water dripping from above enters the contact surface, and the water stays on the contact surface for a long time due to the surface tension. It will be. This causes gap clearance. However, in this embodiment, since the recess 19 is provided, water does not remain in this portion, and water is discharged quickly, so that corrosion can be avoided. When removing the filter guide 16 from the front panel 14, the filter guide 16 and the front panel 14 can be easily disengaged by inserting a tool tip such as a flathead screwdriver into the recess 19.
[0019]
[Effect of the embodiment]
Next, the operation of the refrigerated showcase with an air filter of this 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 back 18a of the back of the filter guide 16 interferes with the storage wall end surface (bottom wall front end surface 12a). Cannot be installed. This makes incorrect assembly impossible.
[0020]
When replacing the air filter 17 mounted on the filter guide 16, the used air filter 17 is removed from the filter guide 16. Then, a new air filter 17 is inserted into the slit-like insertion port 16 a of the filter guide 16. At this time, even if the used air filter 17 is mistakenly turned upside down and inserted into the slit-like insertion port 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 is attached is not attached to face the air suction surface of the air-cooled condenser 13, and dust can be prevented from being sucked into the condenser 13.
[0021]
When the new air filter 17 is inserted into the filter guide 16 in a normal state where it is not 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 (see FIG. 4). When inserted with a little more force from this abutting position, the projection 17c is separated from the tapered surface and is locked to the step portion 26 with the wide space 16a ′, whereby the air filter 17 is attached to the filter guide 16. Locked. Since the air filter 17 can be locked to the filter guide 16 in this way, the mounting structure of the air filter 17 can be simplified. In addition, when the projection 17c of the air filter 17 contacts the tapered surface of the filter guide 16, the air filter 17 is slightly inclined with the contact portion between the projection 17c and the tapered surface as a fulcrum, so that the filter 17 is moved to the locked position. Easy to insert.
[0022]
When 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 downward little by little according to gravity, and finally accumulates at the lower end of the filter guide 16. The narrower the gap between the lower end front panel 14 is, the stronger the surface tension of water acting on the gap is, and the water stays longer in the gap, causing corrosion. However, since the recess 19 is provided in the front panel contact surface of the tongue 16c provided at the lower end of the filter guide 16 of the present embodiment (see FIG. 5), the water entering the recess 19 is caused by gravity. It is discharged quickly and corrosion is suppressed. As described above, the filter guide 16 is prevented from being installed upside down with respect to the front panel 14 by the reverse insertion preventing means (18). A suitable discharge process is performed.
[0023]
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 replacing the plug-in type air filter 17 and is detachably attached to the front panel 14 vertically. it can. Moreover, 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 and energy saving can be achieved as compared with the operation with the clogged air filter 17. Moreover, since the reverse insertion of the air filter 17 is prevented, the air-cooled condenser 13 is not clogged or the inside of the machine room 12 is not soiled. Furthermore, since a mechanism for quickly discharging water even if water enters the gap between the filter guide 16 and the front panel 14, corrosion can be easily avoided.
[0024]
In the above-described embodiment, as a mechanism for preventing the reverse insertion of the filter guide and the air filter, the concave groove is formed in the upper end portion of the filter guide and the ridge is provided in the upper end edge of the air filter. Is not limited to this. For example, you may make it reverse the member which forms a ditch | groove and a protruding item | line, or may form a reverse insertion prevention mechanism in the lower end side of a guide and a filter. Alternatively, the reverse insertion prevention mechanism may be provided at the center in the width direction.
[0025]
【The invention's effect】
As described above, according to the cooling storage with an air filter according to the present invention, by providing the filter guide on the metal panel, the filter guide functions as a reinforcing member, and the bending of the panel can be reduced. Further, since the resin filter guide is provided in the square hole of the panel, it is possible to prevent the finger from directly hitting the square hole when the air filter is inserted.
Furthermore, since the plug-in type air filter is vertically attached to the panel so as to be detachable, it is not necessary to remove or attach the machine room panel when replacing the air filter. In addition, since a structure that prevents the reverse insertion of the air filter is provided, dust attached to the air filter is sucked into the machine room when a used dirty air filter is mistakenly inserted into the panel with a new air filter. The risk of being lost is eliminated.
[0026]
In addition, if the part of the lower end of the filter guide that is in close contact with the front panel remains a narrow gap, the water that has entered the gap will remain in the gap for a long time, causing corrosion. Therefore, the water is not stagnated here, and crevice corrosion is prevented. Further, by using this recess, the filter guide can be easily removed from the panel and replaced.
[0027]
The filter guide has a slit-like insertion port that is tapered to widen the inlet, making it easy to mount the air filter. Also, the air filter is provided with a protrusion and the protrusion is locked to the step of the filter guide. Thus, the air filter can be easily locked to the filter guide.
[0028]
Furthermore, when the filter guide is attached to the panel, a reverse insertion preventing means is provided, so that there is no possibility that the filter guide is mistakenly 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.
3 is a cross-sectional view of a main part when an air filter is inserted into the filter guide shown in FIG. 1. FIG.
4 is a cross-sectional view of a filter guide inlet portion when an air filter is inserted into the filter guide shown in FIG.
5 is a perspective view of a lower end portion of the filter guide shown in FIG. 2. 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]
12 Machine room, 12a Front end surface of warehouse wall (end face of warehouse wall), 13 Air-cooled condenser 14 Front panel (panel), 14b Square hole, 16 Filter guide 16a Slit-shaped insertion port, 16b Concave groove (reverse insertion prevention mechanism)
17 air filter, 17a protrusion (reverse insertion prevention mechanism), 17c protrusion 18 recess (reverse insertion prevention means), 26 step

Claims (5)

It is provided in a machine room (12) in which an air-cooled condenser (13) is installed, a metal panel (14) that closes the machine room (12), and a square hole (14b) in the panel (14). A resin-made filter guide (16) that forms a slit-like insertion port (16a), and a plug-in type air filter (17) that is vertically and detachably attached to the slit-like insertion port (16a). In the cooling storage with an air filter provided with a reverse insertion prevention mechanism (16b, 17a) in the filter guide (16) and the air filter (17),
The reverse insertion prevention mechanism is provided at a groove (16b) provided at an upper end or a lower end of the slit-like insertion port (16a), and at an upper edge or a lower edge of the air filter (17). A cooling storage with an air filter composed of ridges (17a) aligned with (16b). The filter guide (16) said panel (14) according to claim in which recessed panel facing surface of the portion extending downward in close contact with 1 with air filter cooling storage according from the lower end of. The inlet hole shape of the slit-shaped insertion port (16a) in the filter guide (16) is tapered so that the width becomes narrower in the filter insertion direction, and a step portion (26 provided on the back side of the tapered surface) The cooling storage with an air filter according to claim 1 or 2 , wherein a protrusion (17c) releasably engaged with said air filter is provided on said air filter (17). The cooling storage with an air filter according to any one of claims 1 to 3 , wherein the filter guide (16) is provided with a reverse insertion preventing means (18) when being attached to the panel (14). The cooling with an air filter according to claim 4, wherein the reverse insertion preventing means is a recess (18) provided on a back portion of the filter guide (16) and escaping from a wall end surface (12a) with which the panel (14) abuts. Storage.

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