JP5378111B2 - Cooling delivery cart - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling delivery carriage capable of efficiently pulling out intake piping or the like into a machine room via a drain pan in a limited arrangement space. <P>SOLUTION: The cooling delivery carriage 1 includes a compressor 57 and condenser 58 arranged in the machine room 7, an evaporator 40 arranged on the side surface 4A of a storage chamber 4, and the drain pan 47 receiving drain water from the evaporator 40. The drain pan 47 includes a pipe 26 opened at its upper end at a position higher than the maximum water level of the drain pan, passing through a bottom wall 20A of a heat insulating box body 20, and communicating with the inside of the machine room 7 at its lower end. The intake piping 62 reaching the compressor 57 from the evaporator 40 is inserted through the pipe 26. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a cooling delivery cart that delivers articles while maintaining cooling to a predetermined temperature.

  2. Description of the Related Art Conventionally, there is a low-temperature warehouse for low-temperature logistics that is used for delivery of goods with a low temperature inside the warehouse. In this low temperature storage, for example, a delivery item such as food that needs to be maintained at a predetermined cooling temperature in the distribution base is stored in the storage, and is loaded and transported as it is on the loading platform of the delivery vehicle. And it delivers to a delivery destination with a delivery vehicle, takes out a delivery article from the warehouse on the spot, and delivers it to a destination person etc.

  For example, in the low temperature storage shown in Patent Document 1, the cool storage agent is frozen in advance by a cooling device, and then the storage chamber is cooled by the latent heat of fusion of the cool storage agent. According to this, during the cold storage operation, the storage battery is charged by the AC power supply, and the cooling device is operated by the AC power supply and is frozen by the cooler provided in heat exchange with the cold storage agent. The air blower was operated, and a cold insulation operation was performed in which the cool air of the regenerator was circulated and cooled in the storage room.

JP-A-9-53874

  However, in the case of delivery using a conventional low temperature storage, it is difficult to enter a delivery vehicle or stop in a city area, office district, residential area, building district, large commercial facility, etc. The delivery car must be parked. For this reason, the delivery article is taken out from the low-temperature storage at a position away from the delivery destination and delivered in a state where it is exposed to the outside air temperature. During this time, the temperature of the delivery article was inevitably increased, causing deterioration and deterioration of quality. Therefore, there is a problem that reliability at the time of delivery decreases.

  Therefore, when delivering in an area where such a delivery vehicle is difficult to enter, the delivery article is stored in a cool bag having a heat insulating effect and delivered to the delivery destination on foot. However, especially in the summer when the sunlight and the outside air temperature are high, or in a situation where the environmental temperature is high due to the heating equipment, the temperature of the delivery articles stored in the cold insulation bags rises with time.

  Since the cryogenic chamber mounted on the delivery vehicle as described above has wheels, it can be considered that the cryogenic chamber is delivered to the delivery destination by manually pushing the cryogenic chamber. It is difficult to move the alley or the like because of its large weight and poor operability.

  Therefore, equipped with a cooling device consisting of a compressor, a condenser, etc., which is equipped with a wheel for movement and a handle for pushing on a heat insulation box having a storage room for storing delivery items, and which is operated by feeding power from a storage battery. However, the development of a cooling delivery cart that performs delivery while maintaining the storage chamber at a predetermined cooling temperature has been underway.

  In this case, the evaporator and the cool air circulation blower constituting the cooling device are arranged in the storage chamber. A drain pan is disposed below the cooler, and drain water dripped from the evaporator via the drain pan is led to a drain hose disposed in the machine room.

  Here, in order to secure a larger space for storing articles in the storage chamber, the installation dimensions of the evaporator, the cool air circulation blower, and the drain pan that are covered with the cover member are limited. Further, it is necessary to provide a suction pipe, a capillary tube, and the like from the evaporator to the compressor disposed in the machine room. If these suction pipes are led out into the machine room in a way that avoids the drain pan located below the evaporator, the width of the evaporator and drain pan must be reduced, which affects the cooling capacity. It becomes.

  Therefore, it is conceivable that a communication hole is provided in the drain pan, and these suction pipes are inserted and drawn out into the machine room. In this case, since drain water is stored in the drain pan, it is necessary to seal the periphery of the communication hole through which the suction pipe is inserted with a caulking agent or the like. However, if the work is not performed over the entire surrounding area, there is a problem that water leaks into the storage chamber and the work becomes extremely complicated.

  The present invention has been made in order to solve the conventional technical problems, and in a limited arrangement space, cooling delivery that enables a suction pipe or the like to be efficiently drawn out into a machine room via a drain pan. Provide a dolly.

  In order to solve the above-mentioned problems, a cooling delivery cart according to the present invention includes a moving wheel, a handle for pushing, a heat insulating box having a storage chamber for storing a delivery article, and a lower part of the heat insulating box. A machine room configured; a compressor and a condenser provided in the machine room; an evaporator provided on a side surface of the storage room; a cooling device for cooling the storage room by the evaporator; A drain pan that receives drain water, and the drain pan has a pipe having an upper end opened at a position higher than the maximum water level of the drain pan, penetrating the bottom wall of the heat insulating box, and the lower end communicating with the machine room, A suction pipe from the evaporator to the compressor is inserted into the pipe.

  The invention of claim 2 is characterized in that, in the above invention, the pipe has a contact plate portion projecting from the outer surface, and the contact plate portion abuts against a bottom surface of the storage chamber.

  According to a third aspect of the present invention, in the above-mentioned invention, a molded heat insulating material provided on the bottom wall of the heat insulating box and having a water repellent outer surface is provided, and a through-hole through which a pipe passes is formed in the molded heat insulating material. It is characterized by.

  According to a fourth aspect of the present invention, in the above invention, the contact plate portion abuts against the bottom surface of the storage chamber around the opening of the through hole on the storage chamber side, and a sealant is provided between the contact plate portion and the storage chamber bottom surface. It is characterized by being sealed with.

  The invention of claim 5 is characterized in that, in each of the above inventions, the lower end of the pipe enters and opens into the machine room.

  The invention of claim 6 is characterized in that, in each of the above inventions, the pipe is provided integrally with the drain pan.

  According to the cooling delivery cart of the present invention, a wheel for movement, a handle for pushing, a heat insulation box having a storage chamber for storing the delivery article, and a machine room configured below the heat insulation box, A compressor and a condenser provided in the machine chamber, an evaporator provided on a side surface of the storage chamber, a cooling device for cooling the storage chamber by the evaporator, and a drain pan for receiving drain water from the evaporator The drain pan has a pipe whose upper end opens at a position higher than the maximum water level of the drain pan, passes through the bottom wall of the heat insulation box, and communicates with the lower end into the machine chamber. Since the leading suction pipe is inserted into the pipe, the suction pipe can be drawn out to the machine room via the pipe provided in the drain pan.

  Thereby, the space in the limited storage chamber can be used effectively, and an evaporator having a larger size and a drain pan corresponding to the evaporator can be installed. Therefore, the cooling capacity can be enhanced.

  According to the invention of claim 2, in addition to the above-mentioned invention, the pipe has an abutting plate portion projecting from the outer surface, and since the abutting plate portion abuts against the bottom surface of the storage chamber, the heat insulating box through which the pipe is inserted. The inconvenience that drain water accumulated on the bottom surface of the storage chamber through the through hole in the bottom wall of the body enters the heat insulating material of the machine chamber or the heat insulating box can be solved.

   As a result, it is possible to avoid the disadvantage that the heat insulating material of the heat insulating box is deteriorated due to the ingress of water and the heat insulating property is lowered.

  According to invention of Claim 3, in addition to the said invention, it is provided in the bottom wall of the heat insulation box, The outer surface is provided with the shaping | molding heat insulating material, The penetration which a pipe passes in this shaping | molding heat insulating material Since the hole is formed, the through hole in the bottom wall of the heat insulating box through which the pipe passes can be insulated with the molded heat insulating material, and the molded heat insulating material is made water repellent, so that It is possible to reliably avoid the inconvenience of drain water entering the heat insulating material of the heat insulating box.

  According to the invention of claim 4, in addition to the above invention, the contact plate portion abuts the bottom surface of the storage chamber around the opening of the through hole on the storage chamber side, and the contact plate portion and the storage chamber bottom surface Since the gap is sealed with a sealing material, it is possible to avoid the inconvenience that drain water enters from between the contact plate portion and the through hole of the molded heat insulating material.

  According to the invention of claim 5, in addition to each of the above inventions, the lower end of the pipe enters and opens into the machine room, so that the pipe is inserted into the pipe without damaging the heat insulating material on the bottom wall of the heat insulating box. It is possible to draw out the suction pipe to be drawn into the machine room.

  According to the invention of claim 6, in addition to the above-mentioned inventions, since the pipe is provided integrally with the drain pan, the mounting workability can be remarkably eliminated and the productivity can be improved.

It is a perspective view of the cooling delivery cart of the present invention. It is a back perspective view of the cooling delivery cart of FIG. It is a back perspective view of the cooling delivery cart of the state where the door was removed. FIG. 4 is a left side view from the front of FIG. 3. It is a partially notched perspective view which shows the internal structure of a heat insulation box. It is a perspective view of a machine room. It is a top view of a machine room. It is a right view of a machine room. FIG. 9 is a partially enlarged perspective view of FIG. 8. It is a figure which shows the use condition of a fixing tool. It is a front view of the evaporator and a drain pan periphery of the state which removed the cover. It is a perspective view of a drain pan. It is a partial expanded sectional view of a drain pan. 3 is a cross-sectional view of a heat insulating material inserted through a pipe 26. FIG. It is sectional drawing of the heat insulating material as another Example. It is an expansion perspective view in a bumper attachment part. It is a partial expanded sectional view of a bumper.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a perspective view of the cooling delivery cart 1 of the present invention, FIG. 2 is a rear perspective view of the cooling delivery cart 1 of FIG. 1, FIG. 3 is a rear perspective view of the cooling delivery cart 1 with the door 6 removed, and FIG. FIG. 3 shows a left side view from the front of FIG.

  In the state where the AC power supply is connected at the delivery base, the cooling delivery cart 1 of the present embodiment receives the supply of the AC power supply and operates the compressor 57, each of the blowers 42 and 59, and the like in the storage chamber 4. The battery is cooled to a temperature, and the storage batteries 70 and 71 are filled, and after storing the cooling and delivery items such as food, the compressor 57 and the blowers 42 and 59 are supplied by power supply from the storage batteries 70 and 71 in a state where the AC power supply is cut off. Is a distribution delivery cart that can cool the interior of the storage room 4 to a predetermined temperature and directly go to a delivery destination such as each home or office by hand.

  The cooling delivery cart 1 includes a cart 2 and a cooling storage 3. The carriage 2 has a loading platform 11 provided with wheels 12... For movement at the four corners of the lower surface, and one side of the loading platform 11 (in this embodiment, the side constituting the front surface of the cooling delivery cart 1). It is comprised from the cart main body 13 which has the handle | steering-wheel 14 for pushing up more upward. The carriage 2 is fixed by a fixture 15 in a state where the cooling storage 3 is disposed on the loading platform 11.

  The cooling storage 3 is configured to have a width dimension substantially the same as the loading platform 11 of the carriage 2, and the main body is configured from a heat insulating box 20 that opens to the upper surface. This heat insulation box 20 is made of an aluminum or steel plate outer box 21 opened on the upper surface, and an aluminum plate, steel plate or hard synthetic resin opened on the upper surface incorporated in the outer box 21 with a space. The inner box 22 is made of a heat insulating material (not shown) made of urethane foam filled between the outer box 21 and the inner box 22. Bumpers 8 are provided in the upper and lower corners of the outer surface of the heat insulating box 20 of the cooling storage 3. The detailed mounting structure of the bumper 8 will be described later.

  The inner box 22 serves as a storage chamber 4 for storing cooling and delivery items such as food, and the upper surface opening 5 of the storage chamber 4 is thermally insulated so as to be pivotable about one side of the upper surface. The door 6 can be opened and closed freely.

  Here, the configuration of the cooling device R that cools the interior of the storage chamber 4 to a predetermined temperature will be described with reference to FIGS. 5 to 13. 5 is a partially cutaway perspective view showing the internal configuration of the heat insulation box 20, FIG. 6 is a perspective view of the machine room 7, FIG. 7 is a plan view of the machine room 7, and FIG. 8 is a right side view of the machine room 7. 9 is a partially enlarged perspective view of FIG. 8, FIG. 10 is a diagram showing a usage state of the fixing device 27, FIG. 11 is a front view of the evaporator and the drain pan in a state where the cover 41 is removed, and FIG. 12 is a perspective view of the drain pan. FIG. 13 shows a partially enlarged sectional view of the drain pan.

  A side surface 4A on the side where the handle 14 of the heat insulating box 20 constituting the storage chamber 4 is provided, that is, substantially at the center of the front inner wall surface, extends vertically and includes a cover 41 constituting a cold air duct 37 inside. Is provided. In the present embodiment, the cover 41 has a substantially rectangular shape whose width dimension is smaller than the width dimension of the front inner wall surface by a predetermined dimension.

  A cool air suction port 43 is formed at the upper center of the surface of the cover 41 on the storage chamber 4 side (the surface facing the rear surface of the heat insulation box 20), and the cool air suction port 43 on the storage chamber 4 side is formed. A fan guard 44 protruding to the storage chamber 4 side is attached to the surface.

  A plurality of cold air discharge ports 45 are formed in the lower part of the surface of the cover 41 on the storage chamber 4 side, and both sides of the cover 41 are substantially centered (predetermined) from the lower part. Auxiliary cold air discharge ports 46, 46 are formed over the entire height.

  In the cool air duct 37 in the cover 41, an evaporator 40 constituting the cooling device R is provided vertically, and a cool air circulation blower 42 is disposed. In addition, illustration of the air blower 42 is abbreviate | omitted in FIG. The evaporator 40 includes a plurality of heat exchange fins 34 and a meandering refrigerant pipe 35 penetrating the heat exchange fins 34. The refrigerant pipes 35 positioned at both ends of the heat exchange fins 34 arranged side by side are connected by a U-shaped bend portion 35A. The evaporator 40 is attached along the inner wall surface (surface 4A on the storage chamber 4 side) of the heat insulating box 20 by the attachment member 36.

  A drain pan 47 that receives drain water from the evaporator 40 is disposed below the evaporator 40 at the bottom of the cover 41 (cold air duct 37). The detailed structure of the drain pan 47 will be described later.

  On the other hand, a base leg portion 50 having a predetermined height and defining the machine room 7 of the cooling storage 3 is attached to the bottom surface of the heat insulating box 20. The pedestal 50 has a width dimension substantially the same as the platform 11 of the carriage 2, is placed on the platform 11 of the carriage 2 as described above, and is fixed by the fixture 15. In this embodiment, the pedestal 50 is composed of each side 50A assembled in a rectangular shape, and auxiliary sides 50B disposed substantially perpendicularly to the sides extending in the longitudinal direction. .

  The front and rear side surfaces formed by the base leg portions 50 fixed to the carriage 2 are covered with a front panel 51, a rear panel 52, and side panels 53 and 53. Thereby, the machine room 7 is formed below the heat insulating box 20.

  A unit base provided at the bottom of the machine room 7 is disposed on the bottom surface of the pedestal 50. In the present embodiment, the unit base includes a first unit base plate 55 disposed on the front portion of the machine room 7, that is, on the handle 14 side of the machine room 7, and the first unit base plate 55. The second unit base plate 56 is separated and disposed on the rear part of the machine room 7, that is, on the side opposite to the handle 14 side of the machine room 7 (the front side in the traveling direction).

  Here, on the second unit base plate 56 disposed on the side opposite to the handle 14 side, a condenser 58 and condenser fans 59 and 59 that constitute the cooling device R together with the evaporator 40 are disposed. ing.

  The first unit base plate 55 disposed on the handle 14 side includes an evaporator 40, a compressor 57 that forms a cooling device R together with the condenser 58, a capillary tube (decompression unit) 60, and the like. 40, components of the cooling device R other than the condenser 58 are disposed, and an electrical box 61 and storage batteries 70 and 71, which will be described in detail later, are disposed.

  Then, the compressor 57, the condenser 58, the capillary tube 60, the evaporator 40 in the storage chamber 4 and the like disposed in the machine chamber 7 are sequentially connected by the refrigerant pipe to constitute an annular refrigeration cycle.

  Here, the sides 50 </ b> A and auxiliary sides 50 </ b> B of the pedestal 50 defining the machine room 7, and the outer edge 58 </ b> A of the condenser 58 and the storage batteries 70 and 71 disposed in the machine room 7 are illustrated. A plurality of fixtures 27 are attached to the outer edge portion, the outer edge portion of the electrical equipment box 61, and the like.

  The fixing device 27 includes an insertion portion 27A that constitutes an insertion hole 27 through which the binding device 28 is inserted, and a base portion of the insertion portion 27A. As described above, the fixing device 27 is screwed to the base leg portion 50, the outer edge portion of each device, or the like. It is comprised from the fixing | fixed part 27B fixed by these. The binding tool 28 is composed of a flexible band member, and is provided at one end with a locking portion 28A that is inserted into the other end and tightened to be locked. Thereby, it is pulled out from each apparatus which comprises the cooling device R, for example, the compressor 47, each blower 59, 59, the electrical equipment box 61, and also the storage batteries 70, 71 by the said binding tool 28, without using a tool etc. The wiring 29 can be bundled. Generally, the binding tool 28 uses what is called SKB.

  As described above, the fixing tool 27 is for fixing the wiring 29 bundled by the binding tool 28 to the portion to which the fixing tool 27 is fixed, and the opening (communication direction) of the insertion portion 27A is as follows. It is fixed with screws to the base leg 50 and the outer edge of each device so as to be in a direction substantially orthogonal to the extending direction of the fixed wiring. In addition, the attachment work of the said fixing tool 27 shall be performed before the assembly work of each apparatus.

  As a result, the wiring 29 drawn out from each device constituting the cooling device R is inserted into the insertion portion 27A of the fixing device 27 after the binding device 28 is inserted, and then one end of the binding device 28 that bundles the wiring 29 is used as the locking portion 28A. By being locked, the wiring 29 can be smoothly fixed to the fixing tool 27 in a bundled state.

  For this reason, even when the dimensions in the machine room 7 are limited, the tying tool 28 for bundling the wires 29 of the cooling device R is simply inserted into the insertion hole 27A of the fixing tool 27, and is fixed to the machine room 7. Therefore, workability can be remarkably improved. Accordingly, it is possible to eliminate the inconvenience that the wiring 29 of the cooling device R swings due to the vibration generated when the cooling delivery cart 1 moves, causing the disconnection or damage.

  Further, in this embodiment, by using an inexpensive binding tool 28 such as SKB, at the time of maintenance work, the binding tool 28 such as SKB fixed to the fixing tool 27 is cut, the wiring 29 is removed, and the maintenance work is performed. Do. After the maintenance is completed, the wiring 29 can be bundled and fixed in the machine room 7 by the fixing tool 27 using the binding tool 28 such as SKB again.

  In particular, in this embodiment, the fixing device 27 that fixes the binding device 28 is fixed to the base leg portion 50 that defines the machine room 7, the outer edge portion 58 </ b> A of the condenser 58 that forms the cooling device R, and the like. The fixing tool 27 can be easily attached to the machine room 7, and thus, the stable fixing of the wiring 29 can be realized using the fixing tool 27.

  In addition, since the binding tool 28 can also bind the wiring 29 that passes between the first unit base plate 55 and the second unit base plate 56, the wiring 29 of each device that is separately disposed can be stabilized. Thus, it can be fixed to the pedestal 50 and each device constituting the machine room 7. For this reason, it is possible to effectively eliminate the inconvenience that the wiring 29 of the cooling device R swings due to vibration generated during movement, which causes disconnection or damage.

  In the present embodiment, the fixing tool 27 is fixed to the base leg part 50, the outer edge part 58A of the condenser 58, etc., but is not limited to this. For example, the peripheral surface of the machine room 7 is provided. You may attach and position inside each panel 51,52,53 which obstruct | occludes. Also by this, the fixing tool 27 can be easily attached to the machine room 7, and stable fixing of the wiring 29 can be realized using the fixing tool 27.

  On the other hand, the storage batteries 70 and 71 are easily inserted into and removed from the front side of the cooling delivery cart 1 on the front panel 51 of the machine room 7 located on the first unit base plate 55 side where the storage batteries 70 and 71 are disposed. An opening for enabling is formed, and the opening is closed by a door 64 so as to be freely opened and closed.

  A plurality of suction holes 52 </ b> A facing the condenser 58 are formed in the rear panel 52 of the machine room 7 located on the second unit base plate 56 side where the condenser 58 is disposed. A plurality of blowout holes 53 </ b> A are formed in the side panels 53, 53 that close both side surfaces of the machine room 7 by cutting and raising.

  As a result, the operator stands on the front surface of the cooling delivery cart 1, grasps the handle 14 and pushes it forward to move, so that outside air efficiently enters the machine room 7 from the suction hole 52 </ b> A located on the front side in the traveling direction. Then, after the condenser 58 and the compressor 57 are cooled, waste heat is discharged from the blowout holes 53 </ b> A formed in the side panel 53. Therefore, the inconvenience that the waste heat in the machine room 14 is blown to the operator who operates the handle 14 can be solved.

  In the present embodiment, among the devices disposed in the machine room 7, a relatively heavy compressor 57 and storage batteries 70 and 71 are disposed on the handle 14 side, and a large and relatively light condenser 58 is provided. By disposing on the side opposite to the handle 14 side, the weight on the handle 14 side of the cooling delivery cart 1 is disposed so as to be heavier than the opposite side of the handle 14, that is, the front side in the traveling direction in the hand pushing operation. can do.

  In this embodiment, the unit base disposed on the bottom surface of the machine room 7 includes the first unit base plate 55 on which the compressor 57 and the storage batteries 70 and 71 are disposed, the condenser 58 and the like. Since the second unit base plate 56 is provided separately, the weight of the unit base can be reduced. This makes it possible to reduce the weight of the entire cooling delivery cart 1.

  On the other hand, the drain pan 47 that receives drain water from the evaporator 40 disposed in the storage chamber 4 as described above is formed of a rectangular body that is open on the upper surface, and a heat insulating box in which the evaporator 40 is disposed. An attachment wall 47A attached to the inner wall surface (side surface 4A of the storage chamber 4) of the body 20 is provided. The mounting wall 47 </ b> A and the side surface 4 </ b> A of the storage chamber 4 are attached by being sealed (closely attached) with a sealing material (caulking material).

  On the bottom surface 47B of the drain pan 47, a drain port 23 for discharging drain water received inside is formed. The drain port 23 is directed toward the bottom wall 20A of the heat insulating box 20. A drain pipe 24 configured to hang down is integrally formed. A through hole 20B is formed in the bottom wall 20A of the heat insulation box 20, and a drain socket 25 is embedded in the through hole 20B. The lower end of the drain pipe 24 is connected to the drain socket 25. In addition, a drain hose 48 drawn to the outside through the machine chamber 7 is connected to the lower end of the drain socket 25.

  Further, on the handle 14 side of the machine room 7, that is, on the front side of the cooling delivery cart 1, a drain socket 67 that is located between the handle 14 and the cooling storage 3 and constitutes a drain port for drain water is provided. . The drain socket 67 is attached to one side of the front panel 51, which is located on the right side from the front in this embodiment, and one end of the drain socket 67 is substantially flush with the side end surface of the carriage 2. The other end passes through a through hole 51 </ b> A formed in the front panel 51 and faces the machine chamber 14. The drain socket 67 is configured such that both ends communicate with each other, and an end opening located outside is closed by an opening / closing lid 68 so as to be opened and closed.

  As a result, when starting from the delivery base and being delivered and collected, the drain water from the evaporator 40 is discharged from the drain pan 47 by closing the open / close lid 68 of the drain socket 67. Thereafter, the inside of the machine chamber 7 can be stored in a drain hose 48 provided meandering.

  When draining, such as when returning to a delivery base or the like, drain water received in the drain hose 48 is discharged by arbitrarily opening the opening / closing lid 68 closing the drain socket (drain port) 67. It becomes possible.

  Further, the drain pan 47 has an upper end opened at a position higher than the maximum water level of the drain pan, that is, the height position of each wall surface 47C... Constituting the drain pan 47 other than the mounting wall 47A. A pipe 26 penetrating through the bottom wall 20A and having a lower end communicating with the machine chamber 7 is integrally formed.

  The pipe 26 is formed with an abutting plate portion 26 </ b> A that projects from the outer surface, and the abutting plate portion 26 </ b> A is in a state where the drain pan 47 is attached to the inside of the storage chamber 4, i.e., the heat insulation. It is configured to abut on the bottom wall 20 </ b> A of the box 20.

  In the present embodiment, the bottom wall 20A of the heat insulating box 20 is embedded with a molded heat insulating material 31 whose outer surface has been subjected to a water repellent processing, for example, paraffin processing. A through hole 31 </ b> A through which the pipe 26 passes is formed in the molded heat insulating material 31.

  When the drain pan 47 is attached, a sealing material (caulking material) is applied to the contact surface 26B of the backing plate portion 26A with the bottom surface of the storage chamber 4 for attachment.

  Thereby, around the opening on the side of the storage chamber 4 through which the pipe 26 is inserted, the abutting plate portion 26A formed on the outer surface of the pipe 26 is provided in contact with the bottom surface of the storage chamber 4, so that the pipe 26 is inserted. To eliminate the inconvenience that drain water accumulated in the bottom surface of the storage chamber 4 from the through hole 31A of the molded heat insulating material 31 embedded in the bottom wall 20A for entering the heat insulating material of the machine chamber 7 or the heat insulating box 20 Can do.

  The bottom wall 20A of the heat insulating box 20 through which the pipe 26 is inserted is provided with a molded heat insulating material 31 whose outer surface is water-repellent, and a through hole 31A through which the pipe 26 is inserted is formed in the molded heat insulating material 31. Therefore, the through hole 31A of the bottom wall 20A of the heat insulating box 20 through which the pipe 26 passes can be insulated with the molded heat insulating material 31, and the molded heat insulating material 31 is made water repellent. Therefore, it is possible to more reliably avoid the inconvenience of drain water entering the heat insulating material of the heat insulating box 20. Therefore, it is possible to avoid the inconvenience that the heat insulation properties deteriorate due to water entering the heat insulating material of the heat insulating box 20.

  In particular, in the present embodiment, a sealing material is used to seal between the backing plate portion 26A and the bottom surface of the storage chamber 4 (the bottom wall 20A of the heat insulating box) around the opening of the through hole 20C on the storage chamber 4 side. Since the contact is made in the state, it is possible to more effectively avoid the disadvantage that drain water enters from between the contact plate portion 26A and the through hole 31A of the molded heat insulating material 31.

  In this embodiment, since the pipe 26 is formed integrally with the drain pan 47, complicated mounting workability can be remarkably eliminated, and productivity can be improved.

  And the pipe 26 of the drain pan 47 attached to the inner wall surface of the storage chamber 4 in this way is connected between the suction pipe (refrigerant pipe) 62 from the evaporator 40 to the compressor 57 and between the condenser 58 and the evaporator 40. And the wiring 42A from the cool air circulation blower 42 disposed in the cool air duct 37 of the cover 41 together with the evaporator 40 is inserted.

  The suction pipe 62 descends from the evaporator 40, and as shown in FIG. 11, a bent portion 62A that is bent in the upward direction is formed, and the end of the bent portion 62A is then lowered to reach the pipe. 26.

  The suction pipe 62 and the capillary tube 60 inserted through the pipe 26 are covered with a heat insulating material 30 around the periphery thereof. And as shown in the schematic sectional drawing of FIG. 14, the recess 30A is formed in the outer surface of this heat insulating material 30 over a longitudinal direction. The suction pipe 62, the capillary tube 60, and the wiring 42A covered with the heat insulating material 30 are inserted into the pipe 26 in a state where the wiring 42A from the cool air circulation blower 42 is disposed in the recess 30A.

  In the storage chamber 4 side, at least a portion where the suction pipe 62 and the wiring 42A come out from the heat insulating material 30, in this embodiment, a portion including the heat insulating material 30 is covered with a flexible cover 32 such as vinyl. . The cover 32 is fixed with SKB or the like as described above.

  Thereby, the suction pipe 62 and the capillary tube 60 extending from the evaporator 40 to the compressor 57 disposed in the machine chamber 7 and the wiring 42A from the cool air circulation blower 42 are formed in the drain pan 47 from the storage chamber 5 side. It is possible to draw out into the machine room 7 through the pipe 26 formed.

  Since the upper end opening of the pipe 26 is higher than the maximum water level of the drain pan 47 (that is, the height dimension of each side wall 47C excluding the mounting wall 47A), the pipe 26 is drained by the drain water received by the drain pan 47. The inconvenience that the suction pipe 62 and the wiring 42 </ b> A inserted through the pipe 26 get wet with water can be avoided.

  Thereby, it is not necessary to avoid the suction pipe 62, the wiring 42A, etc. to the side of the drain pan 47 and to draw out to the machine room 7, and the limited space in the storage room 4 can be used effectively. Therefore, it becomes possible to install the evaporator 40 with a larger dimension and the drain pan 47 according to this, and can aim at the improvement of cooling capacity.

  Further, in the present embodiment, since the periphery of the suction pipe 62 and the periphery of the capillary tube 60 located in the storage chamber 4 are covered with the heat insulating material 30, the heat insulating material 30 surely surrounds the suction pipe 62. And the inside of the storage chamber 4 can be insulated, and the disadvantage that frost formation occurs on the surface of the suction pipe 62 that becomes low temperature due to the temperature difference between them can be effectively eliminated.

  And since the recess 30A for accommodating the wiring 42A along the outer surface of the heat insulating material 30 is formed, the wiring 42A is not directly along the suction pipe 62 and inserted into the pipe 26. The wiring 42 </ b> A can be guided to the machine room 7 through the same pipe 26 together with the suction piping 62 in the form that the wiring 42 </ b> A is arranged along the suction piping 62.

  When the suction pipe 62 is composed of a copper pipe or the like, if the wiring 42A directly contacts the suction pipe 62, the surface of the suction pipe 62 may be damaged. In this way, the heat insulating material surrounding the suction pipe 62 By accommodating in the recess 30 </ b> A formed on the outer surface of 30, damage due to the wiring 42 </ b> A of the suction pipe 62 can be avoided.

  Further, in the present embodiment, at least the suction pipe 62 and the wiring 42A are covered with the cover 32 on the storage chamber 4 side by the cover 32, so that the end faces of the suction pipe 62, the wiring 42A and the heat insulating material 30 are covered. Etc. can be solved by the drain water dripping from the evaporator 40 positioned above.

  In particular, the suction pipe 62 descends from the evaporator 40 as described above, and is formed with a bent portion 62A that bends in the upward direction, and therefore drain water attached to the suction pipe 62 is supplied to the bent portion 62A. It can be dripped in the drain pan 47 from the lower end of. Therefore, the drain water adhering to the surface of the suction pipe 62 is directly introduced into the pipe 26 from the end of the suction pipe 62 on the side inserted into the pipe 26, so that the heat insulation in the vicinity of the through hole 31 </ b> A of the heat insulation box 20 is performed. The inconvenience of water entering the material can be eliminated. Thereby, it becomes possible to suppress the heat insulation performance fall of the heat insulating material of the heat insulation box 20.

  As described above, since the lower end of the pipe 26 enters the machine room 7 and opens, the suction pipe 62 that is inserted into the pipe 26 without damaging the heat insulating material of the bottom wall 20A of the heat insulating box 20. Can be drawn into the machine room 7.

  In the above embodiment, the recess 30A is formed on the outer surface of the heat insulating material 30 that covers the periphery of the suction pipe 62, and the wiring 42A is accommodated along the recess 30A. As shown in FIG. 15, a storage portion 30 </ b> B for storing the wiring 42 </ b> A may be formed inside the heat insulating material 30, and a cut 30 </ b> C extending from the storage portion 30 </ b> B to the outer surface of the heat insulating material 30 may be formed. . Thereby, the wiring 42 </ b> A can be stored in the storage portion 30 </ b> B formed inside the heat insulating material 30 from the cut 30 </ b> C formed on the outer surface of the heat insulating material 30.

  This also makes it possible to stably lead out the wiring 42 </ b> A through the pipe 26 of the drain pan 47 together with the suction pipe 62 and the heat insulating material 31 covering the suction pipe 62 into the machine chamber 7.

  Also in this case, since the suction pipe 62 and the wiring 42A can be guided into the machine room 7 through the same pipe 26 without contacting, for example, the surface of the suction pipe 62 is damaged by the wiring 42A. Inconvenience can be eliminated.

  Further, in addition to the above-described embodiment, a water drop dropping promoting member may be provided in contact with the lowest point of the bent portion (bent portion 62A) of the suction pipe 62. Thereby, the drain water adhering to the suction pipe 62 can be actively guided to the drain pan 47 from the lowest point of the bent portion 62A, and the inconvenience of the drain water entering the pipe 26 provided in the drain pan 47 is eliminated. be able to.

  On the other hand, on the side surface 4A of the storage chamber 4, water stoppers 33, 33 are located at positions corresponding to the lower side outside the bend portion 35A of the refrigerant pipe 35 constituting the evaporator 40 on both sides of the evaporator 40 in this embodiment. Are attached closely. The water stop member 33 is a member made of, for example, foamed polyethylene or the like, and has a thickness that is sufficiently smaller than the dimension in which the cover 41 that covers the evaporator 40 and the drain pan 47 protrudes from the side surface 4A of the storage chamber 4. The thickness is configured to be, for example, about 5 mm. Further, the water stopper member 33 is configured to extend from the vicinity of both sides of the evaporator 40 to the upper edge portion of the attachment wall 47 </ b> A of the drain pan 47.

  Raised portions 47D projecting upward are formed on both sides of the upper edge of the mounting wall 47A, and the lower end of the water stop member 33 is provided in contact with the mounting wall 47A on the inner side of the raised portion 47D. Configured.

  Since the cooling delivery cart 1 in the present embodiment is configured so that the outside air containing a lot of moisture easily enters the storage chamber 4 because the door 6 is opened every time it arrives at the delivery place or the collection place. Drain water is likely to be generated in the evaporator 40 which is set to a low temperature.

  Here, drain water adheres to the surfaces of the heat exchange fins 34, the refrigerant pipes 35, and the bend portions 35A constituting the evaporator 40 that is set to a low temperature. The drain water dropped from the evaporator 40 is dropped directly onto the drain pan 47 installed below or along the side surface 4A of the storage chamber 4 to which the evaporator 40 is attached. The drain water adhering to the side surface 4A of the storage chamber 4 located between the evaporator 40 and the upper end of the mounting wall 47A of the drain pan 47 is dripped vertically because the usage pattern of the cooling delivery cart 1 itself involves movement. Not only that, it moves in the horizontal direction.

  Here, when the drain water adhering to the side surface 4A of the storage chamber 4 reaches the water stopper member 33 due to the movement in the lateral direction, the drain water crosses the water stopper member 33 and further in the lateral direction (separated from the evaporator 40). Cannot move). The drain water that has reached the water stopper member 33 is smoothly guided toward the drain pan 47 disposed below through the water stopper member 33.

  The lower end of the water stopper member 33 is in contact with the upper end of the mounting wall 47A of the drain pan 47, and the water flow path is configured to be continuous. Therefore, the drain water that has reached the upper end of the mounting wall 47A of the drain pan 47 Is received by the drain pan 47 as drain water.

  As a result, due to the movement of the cooling delivery carriage 1, the drain water dripped from the evaporator 40 travels along the side surface 4A of the storage chamber 4 and accumulates on the bottom surface of the storage chamber 4 and wets the articles in the storage chamber 4. Inconvenience can be eliminated.

  In particular, in the present embodiment, the water stopper members 33 and 33 are provided below the bend portion 35 </ b> A of the refrigerant pipe 35 of the evaporator 40, so that the refrigerant pipe 35 and the heat constituting the evaporator 40 are provided. The drain water dripping from the exchange fin 34 can be reliably guided to the drain pan 47 by the water stopper member 33.

  In this embodiment, as described above, since the sealing wall is sealed between the mounting wall 47A of the drain pan 47 and the side surface 4A of the storage chamber 4, the drain pan is caused by a capillary phenomenon from these gaps. The disadvantage that drain water enters between 47 and the side surface 4A of the storage chamber 4 can be solved.

  Further, the drain water that reaches the upper end of the mounting wall 47A of the drain pan 47 through the water stopper member 33 is formed with protruding portions 47D protruding upward on both sides of the upper end portion of the mounting wall 47A. Even if a lateral force is applied by the movement of the cooling delivery cart 1, the raised portion 47D cannot be easily exceeded, and the drain water reaching the raised portion 47D is guided inward by the raised portion 47D. Is done.

  Therefore, the drain water guided to the drain pan 47 is suppressed from leaking outward by the raised portion 47 </ b> D, and the drain water dripped from the evaporator 40 can be reliably guided to the drain pan 47.

  In addition, an attachment position is decided by attaching the lower end of the water stop member 33 inward of the protruding part 47D. Thereby, it is possible to secure a gap between the water stopper member 33 and the cover 41 covering the evaporator 40 and the drain pan 47 at the raised portion 47D. It is possible to improve the workability of attaching the water stopper member 33.

  In addition, since the water stop member 33 is configured to be sufficiently smaller than the dimension in which the cover 41 that covers the evaporator 40 and the drain pan 47 protrudes from the side surface 4A of the storage chamber 4, Thus, even if the cold air suction port 46 is provided on the side surface of the cover 41, the inconvenience that the water stop member 33 closes the cold air suction port 46 can be solved, and the cold air inflow from the cold air suction port 46 can be solved. Can eliminate the inconvenience.

  Next, the mounting structure of the bumper 8 will be described with reference to FIGS. 16 and 17. 16 is an enlarged perspective view of the bumper 8 mounting portion, and FIG. 17 is a partial enlarged cross-sectional view of the bumper 8. In the present embodiment, the bumper 8 is configured by an elastic member configured to extend in the vertical direction, for example, a rubber member. The bumper 8 constituted by this elastic member is attached from the corner of the heat insulating box 20 to each panel constituting the machine room 7 below by a plurality of screws 63.

  In the present embodiment, in particular, the corners located in the advancing direction by the operation of the hand handle 14 of the cooling delivery cart 1, that is, both sides (corners) of the surface located on the opposite side to the side on which the handle 14 is attached. It is attached to the corner.

  The bumper 8 is configured to be in continuous contact with a surface located in the traveling direction of the cooling delivery cart 1 and a side surface continuously formed with the surface, and the heat insulating box 20 (panels 52 and 53). Are formed on the opposite sides, and on the respective outer surfaces, are recessed portions 8D extending in the vertical direction, and the recessed portions 8D have a plurality of recessed portions 8A at predetermined intervals in the vertical direction. Is formed.

  A screw hole 8B for inserting the screw 63 is formed in each recessed portion 8A. In this embodiment, as shown in FIG. 1 and the like, three are formed on the heat insulation box 20 side at a predetermined interval, and one is formed on the panel 52 or 53 side closing the machine room 7. Yes. Therefore, the lower end of the portion where the panels 52 and 53 and the bumper 8 overlap is fixed by the screws 63 fixed to the panels 52 and 53 from the bumper 8, but the upper end avoids the overlapping portion with the bumper 8. Panels 52 and 53 are fixed to the main body side (base leg portion 50) by screws 65 provided at the positions.

  The recessed portion 8A is formed to have a size capable of accommodating at least the head portion 63B of the screw 63 that is inserted into and fixed to the screw hole 8B. Further, a step portion 9C is formed on the inner side of the opening edge of the recessed portion 8D where the recessed portion 8A is formed.

  Around the threaded portion 63A of the screw 63 inserted into the screw hole 8B of the bumper, there is a sleeve 66 having a dimension that can be accommodated in the screw hole 8B, that is, a length dimension substantially equal to the depth dimension of the screw hole 8B. Is provided. Further, a washer 68 is inserted through the sleeve 66 in a state where the sleeve 66 is provided around the screw portion 63A of the screw 63.

  When the bumper 8 is mounted from the heat insulation box 20 to the panels 52 and 53, first, the bumper 8 is addressed to the corners of the heat insulation box 20 and the panels 52 and 53, and the washer 68 and the sleeve 66 are screwed. In a state where the screw part 63 </ b> A of 63 is inserted, the screw part 8 </ b> B of the bumper 8 is inserted. The screw 63A of the screw 63 is screwed into the screw hole formed in the heat insulating box 20 or the panels 52 and 53.

  At this time, since the sleeve 66 is formed in such a size that the washer 68 can be inserted, one end of the sleeve 66 passes through the washer 68 and comes into contact with the head 63B of the screw 63 by tightening the screw 63. The other end is in contact with the outer surface of the heat insulating box 20 or the panels 52 and 53. Further, since the sleeve 66 has a length dimension substantially equal to the depth dimension of the screw hole 8B formed in the bumper 8 as described above, the screw 63 is tightened to fix the bumper 8 to the heat insulating box 20 or the panel 52. , 53, the head 63B of the screw 63 is supported by a sleeve 66 positioned in the screw hole 8B. As a result, it is possible to reliably avoid the disadvantage that the bumper 8 is deformed by the head 63B of the screw 63 entering the screw hole 8B of the bumper 8 formed of an elastic member that is easily deformed, and screwing is performed. be able to.

  Thereby, the bumper 8 provided up and down is securely provided in the corners of the heat insulating box 20 and the panels 52 and 53, and even when the cooling delivery carriage 1 collides with surrounding items, the elastic member The impact can be mitigated by the bumper 8 configured as follows. Therefore, it is possible to suppress damage to the heat insulation box 20, damage to delivery items stored in the storage chamber 4, and the like.

  Further, in this embodiment, the bumper 8 made of an elastic member can be attached to the heat insulating box 20 and the panels 52 and 53 without deforming, and the aesthetics of the entire cooling delivery cart 1 can be improved. it can. Further, it is possible to avoid the inconvenience that dust or the like enters between the bumper 8 and the heat insulating box 20 or the panels 52 and 53 from the gap generated by the deformation of the bumper 8.

  Further, since the screw 63 attached to the bumper 8 is located in the recessed portion 8A, the head 63B of the screw 63 protrudes outward from the bumper 8, so that it first comes into contact with a surrounding article or the like. Can eliminate the inconvenience caused by the screw 63 instead of the bumper 8. Moreover, the fall of aesthetics can be eliminated.

  Note that the back surface of the head 63B of the screw 63 and the washer 68, and the contact surfaces of the washer 68 and the sleeve 66 may be bonded and integrated with each other. Thereby, the troublesomeness which combines a fine member in a production site can be eliminated, and improvement of production workability can be aimed at. Further, compared to the case of producing a screw having a shape in which the washer 68, the sleeve 66, and the like are integrated, in this embodiment, since the existing member is formed by bonding, the cost can be significantly reduced. it can.

  A stepped portion 8 </ b> C is formed at the opening edge of the recessed portion 8 </ b> D of the bumper 8 along the longitudinal direction of the bumper 8. Therefore, as described above, after the bumper 8 is attached with the screw 63, the reflector 69 is attached by bonding along the edge of the stepped portion 8C. Adhesive is applied to the periphery of the back surface of the reflection plate 69, and a reflective material is provided at least on the outer surface. In this embodiment, the reflecting plate 69 extends above the screw hole (screw hole used for screwing to the panels 52 and 53 for closing the machine room 7) 8B provided at the lowermost end from the upper edge of the recessed portion 8A. Provided.

  Thereby, since the inside of the recessed part 8A of the bumper 8 in which the screw 63 is provided is concealed by the reflecting plate 69, the configuration in which the screw 63 does not appear on the appearance can be achieved, and the aesthetics can be improved. In addition, since the reflection plate 69 is provided on the inner side of the opening edge of the recessed portion 8D of the bumper 8, when the cooling delivery cart 1 is used on the road or the like, the light from the vehicle or the like is reflected by the reflection plate 69. By reflecting, the height dimension etc. of the said trolley | bogie can be appealed to a vehicle etc. This is advantageous in terms of safety.

  In the present embodiment, as described above, the screw 63 at the lower end portion that fixes the bumper 8 to the panels 52 and 53 is not concealed by the reflection plate 69. For this reason, when performing maintenance work in the machine room 7, the screws 63 at the lower end that are not concealed by the reflecting plate 69 and the panel 52 are connected to the main body side (pedestal portion 50) without peeling off the reflecting plate 69. The panel 52 that closes the peripheral surface of the machine room 7 can be removed simply by removing the screws fixed to the machine room 7.

  Thereby, the inconvenience that the bumper 8 provided in the heat insulation box 20 interferes with the maintenance work in the machine room 7 can be solved.

  In this embodiment, the recessed portion 8D is formed in the recessed portion 8D, and the stepped portion 8C is formed in the opening edge of the recessed portion 8D. However, the present invention is not limited to this, and the opening edge of the recessed portion 8A is formed. Even if the stepped portion 8C is formed on the inner side, the same effect is obtained.

  The cooling delivery cart 1 configured as described above can cool the interior of the storage chamber 4 to a predetermined temperature by the compressor 57 driven by the storage batteries 70 and 71, and can deliver the delivery article while maintaining the predetermined cooling state. The handle 14 can be pushed and delivered to the delivery destination.

  For this reason, even in alleys and buildings where vehicles cannot enter, it is possible to deliver delivery items while maintaining such a cooling state. Quality degradation can be avoided. By using the cooling delivery cart 1 to collect and deliver collection / delivery articles from the collection / delivery destination, an increase in storage temperature during collection / delivery can be avoided.

  Thereby, a delivery article etc. can be delivered maintaining a fixed temperature, and the reliability at the time of delivery can be implement | achieved.

R Cooling device 1 Cooling delivery cart 2 Cart 3 Cooling storage 4 Storage chamber 4A Side surface 7 Machine room 8 Bumper 8A Recessed portion 12 Wheel 13 Bogie body 14 Handle 20 Heat insulation box 20A Bottom wall 20B, 20C Through hole 23 Drain port 24 Drain pipe 25 Drain socket 26 Pipe 27 Fixing tool 27A Insertion part 27B Fixing part 28 Bundling tool 29 Wiring 30 Heat insulating material 30A Recess 31 Molding heat insulating material 32 Cover 33 Water stop member 34 Heat exchange fin 35 Refrigerant piping 35A Bend part 40 Evaporator 41 Cover 42 Blower for cold air circulation 46 Auxiliary cold air outlet 47 Drain pan 47A Mounting wall 47B Bottom wall 47C Side wall 47D Raised portion 50 Base leg portion 57 Compressor 58 Condenser 59 Condenser fan 60 Capillary tube (pressure reducing means)
62 Suction piping 62A Bending part 63, 65 Screw 66 Sleeve 68 Washer 69 Reflector 70, 71 Storage battery

Claims (6)

Traveling wheels,
A handle for pushing,
A heat-insulating box having a storage room for storing delivery articles;
A machine room configured below the heat insulation box,
A compressor and a condenser provided in the machine chamber, an evaporator provided on a side surface of the storage chamber, and a cooling device for cooling the storage chamber by the evaporator;
A drain pan for receiving drain water from the evaporator;
The drain pan has a pipe having an upper end opened at a position higher than the maximum water level of the drain pan, penetrating through the bottom wall of the heat insulating box, and having a lower end communicating with the machine chamber. A cooling delivery cart, wherein a suction pipe leading to is inserted into the pipe.   2. The cooling delivery cart according to claim 1, wherein the pipe has a contact plate portion projecting from an outer surface, and the corresponding plate portion contacts the bottom surface of the storage chamber.   The heat insulating box body is provided with a molded heat insulating material provided with a water-repellent outer surface, and a through hole through which the pipe passes is formed in the molded heat insulating material. 2. The cooling delivery cart according to 2.   The abutting plate portion is in contact with the bottom surface of the storage chamber around the opening on the storage chamber side of the through hole, and the corresponding plate portion and the bottom surface of the storage chamber are correspondingly sealed with a sealing material. The cooling delivery cart according to claim 3.   The cooling delivery cart according to any one of claims 1 to 4, wherein a lower end of the pipe enters and opens into the machine room.   The cooling delivery cart according to any one of claims 1 to 5, wherein the pipe is provided integrally with the drain pan.

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