JP3842932B2 - Low temperature showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low-temperature showcase that can easily replace a blower at a low cost by dispensing with a hinge for rotating a fan case in cleaning, and can prevent the short cycle of chill. SOLUTION: A low-temperature showcase 17 is equipped with a cooler 10 that is placed in a chill passage 7 being formed around a merchandise accommodation chamber 1, and a fan case 3 that supports a blower 2 and is placed in the chill passage. In the lower chill passage 7 of the merchandise accommodation chamber 1, a fixing member 12 with an erection part 31 and a horizontal part 32 is fixed. At the erection part of the fixing member 12, a gear-lock member 34 is fixed. At the rear upper end of the fan case 3, an erection flange 38 opposite to the erection part 31 of the fixing member 12, a horizontal flange 39 opposite to the horizontal part of the fixing member 12, and an engagement part 41 for engaging to the gear-lock member 34, are provided.

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, a cooler and a blower are installed in a cool air passage formed between the product storage chamber and the heat insulation box, and the cool air from the cooler is circulated in a certain direction to the opening of the product storage chamber. The present invention relates to a low temperature showcase of a type that forms a cold air curtain.
[0002]
[Prior art]
In the low temperature showcase shown in Japanese Utility Model Publication No. 5-10217 and Japanese Patent Publication No. 4-81716, a cold air passage provided substantially along the heat insulating wall forming the main body is formed, while the product storage room is provided with this. The cool air passage is surrounded by a cool air passage, and a cooler and a blower are arranged in the cool air passage formed between the product storage chamber and the heat insulating wall, and a removable bottom plate is provided on the bottom surface of the product storage chamber. It has a structure.
[0003]
In FIG. 11, as shown by a solid line diagram, the fan case 3 is in the cold air passage 7 at the bottom, and the fan case 3 can be rotated in the vertical direction at the rear upper end, that is, at the rear end of the top wall 3a. There are six hinges 4 for mounting and supporting to (Fig. 10). Reference numeral 10 denotes a cooler placed in the cold air passage 7, and reference numeral 12 denotes a fixing member for mounting and fixing the cooler 10 and rotatably supporting the fan case 3. It is provided substantially horizontally and at substantially the entire width in the width direction of the low temperature showcase 17.
[0004]
Conventionally, in order to clean the bottom 29 of the cool air passage 7 in the lower part of the product storage chamber 1, the fan case 3 to which the blower 2 is fixed is pulled upward as shown by the dotted arrow in FIG. After rotating, the bottom 29 of the low temperature showcase 17 was cleaned.
[0005]
[Problems to be solved by the invention]
By the way, in the case of the conventional fixing method in which the fan case is rotated for cleaning the product storage room, etc., the fan case is integrally provided with a plurality of fans and fan motors. A large number of hinges are required for mounting and supporting in a vertically rotatable manner. Depending on the width of the fan case, the necessary number of hinges may range from 2 to 10 or more, and the hinge is expensive in terms of its structure.
[0006]
In addition, when the hinge is used, it is convenient because it can be easily cleaned with the other hand in the state where it is lifted with one hand (the state where it is lifted as shown by the broken line in FIG. 11). In some cases, there were the following problems. That is, since the blower is heavy and large, it is difficult to remove it and to perform its wiring process in the showcase, and it is necessary to replace the blower after taking the entire fan case out of the low-temperature showcase. For this reason, it is necessary to remove all the hinges from the fixing member. For this reason, a tool such as a screwdriver is required, and a great deal of time and labor is also spent on repair work.
[0007]
Furthermore, the bottom portion may be slightly swollen or recessed compared to the shape of a predetermined heat insulation box at the time of foaming or after foaming. In such a case, the fixing member and the fan case are respectively positioned via the hinges. Because it is mounted so that it does not slip, it cannot be handled so that the lower part of the fan case and the bottom of the cool air passage are in close contact, so a gap remains, so-called short cycle that flows backward from this gap to the suction side of the blower As a result, a smooth flow of cold air in the cold air passage was hindered.
[0008]
The present invention has been made in view of the above-mentioned problems. By eliminating the need for a hinge for rotating the fan case during cleaning, the fan can be easily replaced at low cost. An object of the present invention is to provide a low-temperature showcase that can prevent a short cycle of cold air.
[0009]
[Means for Solving the Problems]
The low-temperature showcase of the present invention comprises a cooler placed in a cool air passage formed around a product storage room, and a fan case that supports a blower and is placed in the cool air passage, in cool air passage below said product receiving chamber, a fixing member having an inclined portion a standing portion and a substantially horizontal portion is fixed to the upright portion of the fixing member, Rutotomoni locking member is fixed, locking member flange portion is formed on the on the rear upper portion of the fan case, a standing flange facing the upright portion of the fixing member, and a substantially horizontal flange which faces the substantially horizontal portion of the fixing member, the fixing member And a U-shaped engaging part that engages with the locking member .
[0010]
According to the present invention, there is no need for a hinge for rotating the fan case at the time of cleaning, the cost is low, the blower can be easily replaced, and a short cycle of cold air can be prevented. A case can be provided.
[0011]
Further, since the U-shaped engaging portion is formed at the position where the locking member is engaged with the fan case, the fan case is moved in the longitudinal direction and the vertical direction by the locking member fixed to the fixing member. Is regulated.
[0012]
When cleaning, the fan case is held and rotated backward. At this time, the fan case rotates while sliding on the fixing member. However, since the locking portion provided in the fan case is engaged with the collar portion of the locking member fixed to the fixing member, the locking portion does not come off from the fixing member up to a certain angle.
[0013]
If the fan breaks down, pull up the fan case until it is almost vertical, the horizontal flange will come off the inclined part and the horizontal part, and the U-shaped engaging part will also come off from the collar part of the locking member, The entire fan case can be removed from the fixing member without using a tool such as a screwdriver.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. Parts identical or corresponding to those in the conventional example shown in FIGS. 10 and 11 are denoted by the same reference numerals. 1 to 8, the bottom plate 14 and the like are omitted.
[0015]
In FIG. 9, reference numeral 10 denotes a cooler placed in the rear cool air passage 7b. Reference numeral 15 denotes a main body formed of a heat insulating wall, which has a machine room 16 for accommodating a compressor and a condenser (not shown) at the lower portion, and a front cold air passage 7a along the front wall 6a of the main body 15. Is formed. Above the fan case 3, a bottom plate 14 that forms the bottom surface of the product storage chamber 1 is detachably mounted.
[0016]
A fixing member 12 is fixed to the rear part below the bottom plate 13, and is provided in the cold air passage 7 substantially horizontally and substantially in the width direction of the low temperature showcase 17. As shown in FIG. 4, the fixing member 12 is provided with a substantially vertical upright portion 31 and a substantially horizontal horizontal portion 32. A plurality of locking members 34 having collar portions 35 are screwed to the standing portion 31.
[0017]
As shown in FIG. 1, the fan case 3 is made of a steel plate and includes an upper surface wall 3a, a front wall 3b, and left and right side walls 3c and 3c, and has a shape in which a rear surface and a lower surface are opened. The fan case 3 is fixedly supported by the blowers 2 and 2 facing the ventilation holes 9, 9... Formed in the upper surface wall 3a. As shown in FIG. 4, a substantially vertical upright flange 38 and a substantially horizontal horizontal flange 39 are provided at the rear upper end of the fan case 3, that is, the rear end of the upper surface wall 3a. 3 and 4, the horizontal flange 39 of the fan case 3 is above the horizontal portion 32 of the fixing member 12, and the fan case 3 is in a position where the locking member 34 is aligned. In addition, as shown in FIG. 2, a U-shaped engagement portion 41 is formed, and the fan case 3 is restricted from moving in the longitudinal direction and the vertical direction by the locking member 34 fixed to the fixing member 12.
[0018]
When the low-temperature showcase 17 is cooled, the cool air circulated by the blower 2 as shown by the solid line arrow in FIG. 9 passes through the back cool air passage 7b, and from the upper air outlet (not shown) to the suction port 19 of the front cool air passage 7a. The air curtain heading toward the vehicle is formed, and the product in the product storage chamber 1 is cooled well.
[0019]
Next, a procedure for cleaning the bottom 29 in the low-temperature showcase 17 will be described with reference to FIGS. 9, 3, and 4. First, the bottom plate 14 of the product storage chamber 1 is removed. Thereafter, the fan case 3 is held and rotated backward as shown in FIG. 3 with the fixing member 12 on which the upper end of the rear part is placed as a fulcrum. Then, the fan case 3 is pulled up to a position where the hand can enter the bottom 29. At this time, the fan case 3 rotates while sliding on the fixing member 12. However, since the engaging portion 41 provided in the fan case 3 is engaged with the collar portion 35 of the locking member 34 fixed to the fixing member 12, it does not come off the fixing member 12 to a certain angle. . In this state, the periphery of the bottom 29 including the cool air passage 7 and the cooler 10 are cleaned.
[0020]
When the cleaning is completed, the fan case 3 is held, and conversely, this time, on the other hand, the upper end of the fixing part 12 on which the upper end of the rear part is placed is pivoted forward to return to the original state. Thereafter, when the bottom plate 14 is placed, the original state before cleaning is restored.
[0021]
Next, when the blower 2... Breaks down, as shown in FIGS. 5 and 6, when the fan case 3 is pulled up to become substantially vertical, the horizontal flange 39 of the fan case 3 tilts the fixing member 12. Since the U-shaped engaging portion 41 formed on the fan case 3 is also detached from the collar portion 35 of the locking member 34, the entire fan case 3 is removed from the fixing member 12 with a screwdriver or the like. It can be removed without using a tool. Thereafter, the work can be carried out easily and in a short time by taking it out of the low temperature showcase 17 and replacing the blowers 2.
[0022]
Further, as shown in FIGS. 7 and 8, the bottom portion 29 may be slightly swollen or recessed as compared with the shape of a predetermined heat insulating box at the time of foaming or after foaming, and the fan case 3 may be lifted by that amount or Will sink. In that case, in the conventional fixing method using a hinge as shown in FIG. 10, the fixing member 12 and the fan case 3 are attached via the hinge 4 so that their positions are not shifted from each other. There may be a gap between the lower portions of the walls 3c and 3c and the bottom 29 of the cold air passage 7. However, in this embodiment, the upper and lower and front and rear positions of the fan case 3 can be easily moved, so that the fan case 3 is located between the front wall of the fan case 3 and the lower portions of the left and right side walls 3c and 3c and the bottom 29 of the cold air passage 7. The fan case 3 is locked to the fixing member 12 with no gap. That is, since the fan case 3 moves up and down or back and forth in response to the deformation of the bottom portion 29, the bottom portion 29 is not in close contact with the front wall of the fan case 3 and the bottom of the left and right side walls 3c, 3c. The gap that was left is not generated. Therefore, the so-called short cycle in which the cold air sucked by the blower 2... And once sent to the cooler 10 side returns to the suction side of the blower 2. Cool air will flow smoothly through it.
[0023]
Next, as shown in FIGS. 3 and 4, the fixing member 12 further extends to the horizontal portion 32 and has an inclined portion 33, and the fan case 3 further extends to the horizontal flange 39. In the case of having the inclined flange 40 as well, when the fan case 3 is removed to replace the blower 2. The standing flange 38 and the horizontal flange 39) are guided by the inclined portion 33 of the fixing member 12 to be easily engaged with the fixing member 12, and therefore the fan case 3 can be easily returned to the original normal state. Can be recovered.
[0024]
Further, unlike the present embodiment, the fixing member 12 has an upright part 31, a horizontal part 32, and an inclined part 33 extending to the horizontal part 32, and the fan case 3 has only the inclined flange 40. Similarly, the hinge for rotating the fan case at the time of cleaning can be made unnecessary. That is, the fan case 3 is held and rotated backward using the fixing member 12 on which the upper end of the rear part is placed as a fulcrum. Then, the fan case 3 is pulled up to a position where the hand can enter the bottom 29. At this time, the fan case 3 rotates while sliding on the fixing member 12. Then, in the state where the inclined portion 33 at the rear upper end of the fan case 3 is placed on the fixing member, the periphery including the cool air passage 7 in the bottom portion 29 and the cooler 10 are cleaned.
[0025]
When the cleaning is completed, the fan case 3 is held, and conversely, this time, on the other hand, the upper end of the fixing part 12 on which the upper end of the rear part is placed is pivoted forward to return to the original state. Thereafter, when the bottom plate 14 is placed, the original state before cleaning is restored.
[0026]
When the blower 2... Fails, the fan case 3 can be lifted to remove the entire fan case 3 from the fixing member 12 without using a tool such as a screwdriver. Thereafter, the work can be carried out easily and in a short time by taking it out of the low temperature showcase 17 and replacing the blowers 2.
[0027]
Further, the position of the fan case 3 can be maintained even when the fan case 3 is lifted or sinks by a certain amount due to the bottom portion 29 being slightly swollen or recessed as compared with the shape of the predetermined heat insulation box at the time of foaming or after foaming. Since the fan case 3 can be easily moved, the fan case 3 is locked to the fixing member 12 in a state where there is no gap between the lower portion of the front wall and the left and right side walls 3c, 3c and the bottom portion 29 of the fan case 3. That is, since the fan case 3 moves up and down or back and forth in response to the deformation of the bottom portion 29, the bottom portion 29 is not in close contact with the front wall of the fan case 3 and the bottom of the left and right side walls 3c, 3c. The gap that was left is not generated. Therefore, the so-called short cycle in which the cold air sucked by the blower 2... And once sent to the cooler 10 side returns to the suction side of the blower 2. Cool air will flow smoothly through it.
[0028]
In order to restore the fan case 3 to the original normal state after the fan case 3 is removed to replace the blower 2..., The rear part of the fan case 3 is engaged with the fixing member 12. The inclined flange 40 at the upper end is guided by the inclined portion 33 of the fixing member 12 and can be easily engaged with the fixing member 12. Therefore, the fan case 3 is easily restored to the original normal state. be able to.
[0029]
In the above embodiment, the horizontal portion 32 of the fixing member 12 has been described as being substantially horizontal. However, even if there is a slight inclination, and similarly, the inclination portion 33 has an inclination angle that is substantially vertical. The bottom 29 in the low temperature showcase 17 can be easily cleaned by the same procedure as that described above. Even when the horizontal flange 39 of the fan case 3 is inclined, and even when the inclination angle of the inclined flange 40 is substantially vertical, the cleaning operation can be easily performed.
[0030]
【The invention's effect】
As described above, according to the present invention, a hinge for rotating the fan case at the time of cleaning can be made unnecessary, the cost can be reduced, the blower can be easily replaced, and a short cycle of cold air Can be provided.
[Brief description of the drawings]
1 is a perspective view of a main part of a low-temperature showcase according to an embodiment of the present invention. FIG. 2 is an enlarged view of a portion A in FIG. 1. FIG. [Fig. 5] Enlarged view of part B in Fig. 5 [Fig. 5] An enlarged vertical side view of the main part showing a state where the fan case is lifted substantially vertically and a state where the fan case is removed. [Fig. FIG. 8 is an enlarged side view of a part D in FIG. 7. FIG. 9 is a vertical side view of a low-temperature showcase according to an embodiment of the present invention. FIG. 10 is a conventional fan case. FIG. 11 is a longitudinal side view of a conventional low-temperature showcase.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Commodity storage room 2 Fan 3 Fan case 10 Cooler 12 Fixing member 14 Bottom plate 31 Standing part 32 Horizontal part 33 Inclining part 34 Locking member 35 Collar part 38 Standing flange 39 Horizontal flange 40 Inclining flange 41 Engaging part

Claims (1)

In a low-temperature showcase comprising a cooler placed in a cool air passage formed around the product storage chamber and a fan case supporting a blower and placed in the cool air passage, the cool air below the product storage chamber into the passage, the standing part and the fixing member having a inclined portion substantially horizontal portion fixed to the upright portion of the fixing member, the locking member is fixed Rutotomoni, the flange portion is formed in the locking member The upper upper end of the fan case has an upstanding flange facing the upstanding portion of the fixing member, an approximately horizontal flange facing the approximately horizontal portion of the fixing member, and an inclined flange facing the inclined portion of the fixing member. And a U-shaped engaging portion that engages with the locking member .

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