JP2008267756A - Food service cart - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a food service cart allowing the easy cleaning of a drain port of a cold air duct, preventing the leakage of a dew condensate from a small window closed by a cover member, and facilitating the attachment/detachment of the cover member. <P>SOLUTION: The food service cart A is constituted by providing partition walls 2 in a warmer/refrigerator 1 formed to be travelable to form heat reserving chambers 3 and cold reserving chambers 4 in the warmer/refrigerator 1, forming trays 9 so as to be held at the partition walls 2, and providing the cold reserving chambers 4 with cold air ducts 5 for supplying cold air. The cold air duct 5 has a drain port 6 for draining the dew condensate generated in the cold air duct 5, and the small window 7 for cleaning the drain port 6. The inner edge of the small window 7 is inserted in a groove 11 formed at a window frame member 10 formed of soft plastic to fix the window frame member 10 to the small window 7. A fitting protrusion 12 is formed outside the window frame member 10. The fitting protrusion 12 of the window frame member 10 is fitted into a fitting recess 13 formed at the cover member 8 formed of soft plastic to close the small window 7 by the cover member 8. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a service car used in a hospital or school.

  For example, when a patient in each hospital room is served at a hospital, etc., dishes with staple foods, side meals, desserts, etc. are arranged on the tray, and a large number of trays are stacked in the upper and lower rows of the tray to accommodate them. While traveling around each hospital room, the tray is taken out from the distribution car and delivered to the patient. Various types of such arrangements have been provided in the past, but recently, arrangements with a hot refrigerator with a thermal storage room and a cold storage room provided on the carriage have been used. The food can be delivered while being kept warm in a greenhouse or kept in a cold room (see, for example, Patent Document 1). Here, the cold insulation chamber is provided with a cold air duct, and the cold insulation chamber is cooled by blowing cold air from the cold air duct to the cold insulation chamber.

  However, in this type of distribution vehicle, a dedicated service person removes all the parts in the hot refrigerator at a frequency of about once every two to three years, thereby draining the condensed water generated inside the cold air duct. In order to clean the drain, the kitchen operator cannot clean the drain, and there is a possibility that the drain may be clogged with mold generated in the cold air duct and become unsanitary.

  Therefore, the present inventor has so far provided a drainage port for draining dew condensation water generated inside the cold air duct at the bottom surface of the cold air duct and provided a small window for cleaning the drainage port in the cold air duct. At the same time, there has been provided a distribution vehicle in which a lid member for closing the small window is detachably provided on the cold air duct (Japanese Patent Application No. 2005-312007) to solve the above problems.

  Specifically, as shown in FIG. 7, the small window 7 is formed by the lid member 8 so as to be freely opened and closed. The lid member 8 is made of a metal such as stainless steel made of the same material as the cold air duct 5 and has a plate shape slightly larger than the opening of the small window 7. The lid member 8 is attached to the front surface of the cold air duct 5 with a bolt 48. Reference numeral 50 denotes a screw hole into which the bolt 48 is screwed.

During normal use, the small window 7 is closed with the lid member 8 as shown in FIG. 7A. However, during maintenance, the bolt 48 is loosened and the lid member 8 is removed, so that FIG. As shown in (b), the small window 7 is opened, and the drain port (not shown) is cleaned from the small window 7. Therefore, a full-time service person can easily clean the drain outlet without removing all the parts in the hot refrigerator.
JP 2005-73753 A

  However, in the case shown in FIG. 7, the small window 7 is simply closed by a plate-shaped lid member 8 made of the same metal as the cold air duct 5, and the bolts 48 are tightened. Is uneven, a slight gap is formed between the lid member 8 and the small window 7, and the condensed water 70 generated inside the cold air duct 5 as shown in FIG. 8 may leak from this gap. is there. In FIG. 8, reference numeral 5 c denotes a heat exchanger (evaporator) provided inside the cold air duct 5 and serves as a main source of the condensed water 70.

  Further, the attachment / detachment of the lid member 8 must be performed by tightening or loosening the plurality of bolts 48, which is troublesome.

  The present invention has been made in view of the above points, and can easily clean the drain port of the cold air duct and prevent leakage of condensed water from a small window closed by the lid member. An object of the present invention is to provide a distribution vehicle that can easily attach and detach a lid member.

  According to the first aspect of the present invention, a distribution vehicle is provided with a partition wall 2 in a warm refrigerator 1 formed to be able to travel, thereby forming a warm room 3 and a cold room 4 in the warm refrigerator 1. In the allocation vehicle A which is formed so as to be able to hold a plurality of trays 9 on the wall 2 and is provided with a cold air duct 5 for supplying cold air to the cold storage chamber 4, for draining dew condensation water generated inside the cold air duct 5. A drain port 6 is provided on the bottom surface of the cold air duct 5 and a small window 7 for cleaning the drain port 6 is provided in the cold air duct 5, and a groove 11 provided on the outer periphery of the window frame member 10 formed of soft plastic. The window frame member 10 is fixed to the small window 7 by inserting the inner edge of the small window 7 into the window 7, and the fitting convex portion 12 is provided outside the window frame member 10 so as to surround the small window 7, and is formed of soft plastic. The window frame member 1 is fitted into the fitting recess 13 provided on the back surface of the lid member 8. The small window 7 by fitting the fitting convex portion 12 is characterized in that comprising closed by the cover member 8.

  According to the distribution vehicle according to claim 1 of the present invention, by removing the lid member from the cold air duct and opening the small window, the drainage port can be cleaned through the small window, and a dedicated service person is installed in the hot refrigerator. Without removing all the parts, the kitchen operator can easily clean the drain, and the lid member and window frame member made of soft plastic are in close contact with each other to close the lid. The condensed water can be prevented from leaking from the small window, and the lid member can be easily attached and detached by fitting the fitting concave portion of the lid member and the fitting convex portion of the window frame member. Is.

  Hereinafter, the best mode for carrying out the present invention will be described.

  FIG. 2 shows an example of a distribution vehicle A according to the present invention. In this figure, a part of the arrangement vehicle A is omitted. The warm refrigerator 1 is made of a metal material such as stainless steel in a box shape, and the warm refrigerator 1 can be run by mounting the warm refrigerator 1 on a carriage 21 having wheels 20. Is formed. Both side surfaces of the warm refrigerator 1 are formed as openings 22, and a plurality of doors 23 are pivotally attached to the openings 22 so that the openings 22 can be opened and closed. Although only one door 23 is shown in the example shown in FIG. 2, a total of six doors 23 are actually attached.

  A plurality of partition walls 2 are provided inside the warm refrigerator 1. The partition wall 2 is arranged in parallel in the front-rear direction of the warm refrigerator 1 with a predetermined interval. The partition wall 2 partitions the interior of the warm refrigerator 1 into a warm room 3 and a cold room 4. In FIG. 2, only one partition wall 2 is shown, but in actuality, a total of three partition walls 2 are attached. Of the internal space of the hot refrigerator 1 partitioned by the partition wall 2, the space behind the partition wall 2 located at the rearmost side is formed as a warming chamber 3a, and the partition wall (not shown) in the middle and the rearmost The space between the partition wall 2 located at the center is formed as a cold room 4a, and the space between the middle partition wall (not shown) and the frontmost partition wall (not shown) is formed as a cold room 3b. The space ahead of the partition wall (not shown) located at the forefront is formed as a cold insulation chamber 4b.

  A cold air duct 5 is provided in the cold insulation chamber 4a. The cold air duct 5 is disposed at a substantially central portion in the front-rear direction of the cold insulation chamber 4a, and supplies cold air to the front space and the rear space of the cold air duct 5 in the cold insulation chamber 4a. The cold air duct 5 includes a frame-shaped rear member 5a whose front surface is open and whose rear surface is closed, and a plate-shaped front member 5b attached to the front surface of the rear member 5a. In addition, a heat exchanger 5c (evaporator) is provided inside the cold air duct 5, and two fans 5d are provided in the cold air duct 5.

  Moreover, the warm chamber 3b is provided with a hot air duct 25. The warm air duct 25 is disposed at a substantially central portion in the front-rear direction of the warm chamber 3b, and supplies warm air to the front space and the rear space of the warm air duct 25 in the warm chamber 3b. A heater 26 such as an electric heater is provided inside the hot air duct 25.

  Note that a cooling device different from the cold air duct 5 is provided in the cold insulation chamber 4b. In addition, a thermal insulation device different from the warm air duct 25 is provided in the thermal insulation room 3a.

  As shown in FIG. 3, the partition wall 2 is formed by connecting a plurality of partition wall units 40 in a vertically stacked manner. The partition wall unit 40 is formed in a T-shape when viewed from the front by a horizontal plate 41 and a vertical plate 42, and a slit-like recess 43 is provided on the lower surface of the vertical plate 42 so as to open downward. A shutter plate 52 that is elastically biased downward by a spring is mounted in the slit-shaped recess 43 so as to be movable up and down. In addition, a positioning protrusion 44 that protrudes upward in a trapezoidal shape is provided at the center in the width direction of the horizontal plate 41. The shutter plate 52 is prevented from coming out of the slit-shaped recess 43 by contacting the upper surface of the partition wall unit 40 whose lower end is located on the lower side, and a gap between the partition wall units 40 and 40 adjacent to each other in the vertical direction. Is closed by a shutter plate 52 so as to block the air flow between the thermal storage chamber 3 and the cold storage chamber 4. Further, support bars 47 protrude from both sides (front and rear) of each partition wall unit 40, and side bars 45 are provided at the tips of the support bars 47. A plurality of receiving metal fittings 46 are vertically arranged on the front and rear surfaces inside the hot refrigerator 1, the front and rear surfaces of the cold air duct 5 and the front and rear surfaces of the hot air duct 25. By locking the tip of 45, the partition wall unit 40 can be supported and attached by the receiving metal fitting 46 via the side bar 45 and the support bar 47.

  A travel operation panel 27 is provided on the front surface of the hot refrigerator 1, and the travel operation panel 27 is provided with an on / off switch, an emergency stop switch, and the like. In addition, an operation lever 28 is provided on the front surface of the warm refrigerator 1, and by operating the operation lever 28, the arrangement vehicle A can be moved forward and backward and the direction can be changed. Note that a relay indicated by reference numeral 29, an exhaust fan indicated by reference numeral 30, and an electromagnetic contactor indicated by reference numeral 31 are provided on the upper surface of the warm refrigerator 1.

  A heat exchanger 32 is provided on the lower surface of the carriage 21 and is connected to the heat exchanger 5 c provided in the cold air duct 5 by a refrigerant pipe 33. The carriage 21 may be provided with a power assist mechanism.

  And as shown in FIG. 4, the distribution vehicle A of this invention can be formed by attaching the cover body 34 to the outer peripheral surface of said warm refrigerator 1 and attaching the bumper 35 to the outer peripheral surface of the trolley | bogie 21. As shown in FIG.

  This allocation vehicle A is formed in the partition wall 2 so that the some tray 9 can be hold | maintained. That is, as shown in FIG. 3, the tray 9 can be accommodated in the warm refrigerator 1 by inserting the tray 9 between the partition wall units 40, 40 adjacent to the upper and lower sides of the partition wall 2. The tray 9 has a heat-retaining food part 9a on which one side portion arranges foods that need heat insulation, and the other side part has a cold-retained food part 9b on which food items that require cold preservation are arranged. A concave groove 67 is formed on the lower surface of the tray 9 at the boundary of the portion 9b. And by inserting this concave groove part 67 between the upper and lower partition wall units 40, 40 in a state where the groove 67 is fitted to the positioning protrusion 44 of the partition wall unit 40, the warm food part 9a is placed in the warm room 3 and the cold food part. The tray 9 can be accommodated in the warm refrigerator 1 with the 9b positioned in the cold room 4 respectively. At this time, the warm food portion 9a and the cold food portion 9b of the tray 9 are placed on the horizontal plate 41 and the support bar 47 of the partition wall unit 40, so that the tray 9 can be stabilized even when the distribution car A is traveling. Can be supported.

  And in the allocation vehicle A of this invention, the drain port 6 for draining the dew condensation water which generate | occur | produces inside the cold wind duct 5 is provided. As shown in FIG. 1, the drain port 6 is formed to open at the bottom surface of the rear member 5 a of the cold air duct 5. Note that a drain pipe (not shown) is connected to the drain port 6, and condensed water is discharged to a tank (not shown) provided in the carriage 21 through the drain pipe.

  A small window 7 is formed in the front member 5 b of the cold air duct 5. The small window 7 is a substantially rectangular opening and is formed so as to penetrate the front member 5b in the thickness direction. Further, the small window 7 is provided in the vicinity of (in front of) the drain outlet 6 in a state where the front member 5b is attached to the rear member 5a. That is, in a state where the front member 5b is attached to the rear member 5a, the drain port 6 is visible from the small window 7, and a cleaning tool such as a hand or a brush is inserted from the small window 7 and reaches the drain port 6. A small window 7 can be formed. Reference numeral 49 denotes a fan mounting opening for mounting the fan 5d. Reference numeral 51 denotes an attachment hole for attaching the receiving metal fitting 46.

  The small window 7 is formed to be openable and closable by a window frame member 10 and a lid member 8 made of soft plastic such as polyethylene. As shown in FIG. 5A, the window frame member 10 is slightly larger than the opening of the small window 7, and is formed thicker than the thickness of the front member 5b. An opening window 14 that communicates with the small window 7 is provided at the center of the window frame member 10, and a groove 11 is provided on the outer periphery (outer surface) of the window frame member 10. The window frame member 10 can be fixed to the small window 7 as shown in FIG. 5B by inserting the inner edge of the small window 7 into the groove 11 of the window frame member 10. A fitting convex portion 12 is provided outside the window frame member 10 so as to surround the small window 7. That is, the fitting convex portion 12 is provided so as to surround the periphery of the opening window 14 of the window frame member 10. On the other hand, the lid member 8 is formed in a plate shape with the same size as the window frame member 10, and a fitting recess is formed on the back surface of the lid member 8 so as to correspond to the fitting projection 12 of the window frame member 10. 13 is provided. Then, by fitting the fitting convex portion 12 of the window frame member 10 into the fitting concave portion 13 of the lid member 8, the small window 7 can be closed with the lid member 8 as shown in FIG. it can.

  Thus, in the allocation vehicle A of the present invention, during normal use, the small window 7 is closed with the lid member 8 via the window frame member 10 as shown in FIG. During maintenance, the cover member 8 is removed from the window frame member 10 to open the small window 7 and clean the drain port 6 from the small window 7 as shown in FIG. Therefore, a full-time service person can easily clean the drain outlet 6 without removing all the components in the warm refrigerator 1. Further, during normal use, the cover member 8 and the window frame member 10 made of soft plastic are in close contact with each other, so that the condensed water 70 leaks from the small window 7 closed by the cover member 8 as shown in FIG. Can be prevented. The lid member 8 can be easily attached and detached by fitting the fitting concave portion 13 of the lid member 8 and the fitting convex portion 12 of the window frame member 10. Here, the fitting recess 13 of the lid member 8 is preferably formed in the shape of a dovetail, whereby the adhesion between the lid member 8 and the window frame member 10 can be further enhanced.

It is a disassembled perspective view which shows an example of embodiment of this invention. It is a partial exploded perspective view same as the above. It is the schematic which shows the holding state of a tray same as the above. It is a side view which shows the whole same as the above. (A)-(c) is a partial exploded perspective view same as the above. It is a schematic sectional drawing same as the above. (A) and (b) are some perspective views of a prior art. It is a schematic sectional drawing same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Warm refrigerator 2 Partition wall 3 Cold room 4 Cold room 5 Cold air duct 6 Drain outlet 7 Small window 8 Lid member 9 Tray 10 Window frame member 11 Groove part 12 Fitting convex part 13 Fitting concave part

Claims (1)

  By providing a partition wall inside the hot refrigerator that is configured to run, a thermal insulation room and a cold room are formed in the thermal refrigerator, a plurality of trays can be held on the partition wall, and cold air is supplied to the cold room. In a trolley equipped with a cold air duct for supply, a drainage port for draining condensed water generated inside the cold air duct is provided at the bottom of the cold air duct, and a small window for cleaning the drainage port is provided. Install in the cold air duct, insert the inner edge of the small window into the groove provided on the outer periphery of the window frame member made of soft plastic, fix the window frame member to the small window, and surround the small window outside the window frame member In addition to providing a fitting convex portion, the small window is closed with the lid member by fitting the fitting convex portion of the window frame member into the fitting concave portion provided on the back surface of the lid member made of soft plastic. A distribution car characterized by that.

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