JP2013083398A - On-vehicle type cool box, refrigerator truck for home delivery and cooling system equipped with the same, and cooling method of on-vehicle type cool box using the cooling system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle type cool box, which gives an efficient cooling effect with an inexpensive structure and can achieve improvement in the fuel economy of a delivery vehicle, elongation of a service life and saving of an electric bill.SOLUTION: An on-vehicle type cool box 1 includes: a freezing chamber 19 that accommodates a refrigerant 23 and cools the refrigerant at a predetermined temperature to freeze it in a travel standby period of a delivery vehicle 9; and a refrigerating chamber 15 that accommodates an article 25 to be cooled and the refrigerant 23 and stores them while maintaining a predetermined temperature while the delivery vehicle 9 travels. A partition wall 27, which allows propagation of the temperature in the cooled freezing chamber 19 into the refrigerating chamber 15, is disposed between the freezing chamber 19 and the refrigerating chamber 15, and thereby decreasing the temperature in the refrigerating chamber 15 by propagation of the temperature from the partition wall 27.

Description

  The present invention relates to an in-vehicle refrigeration store for storing a refrigerated product such as milk in a state where the refrigerated product is maintained at a constant temperature, and a refrigerated vehicle for delivery to be used for delivery of the refrigerated product by mounting the in-vehicle refrigerated store on a cargo bed The present invention relates to a cooling system including an in-vehicle cooler that cools the in-vehicle cooler to a predetermined temperature, and a cooling method for the in-vehicle cooler using the cooling system.

For delivery of refrigerated products such as milk, a small-sized and light car is often used, and an on-vehicle refrigeration store that stores the refrigerated product at a constant temperature in the body of the light vehicle; The cooling device for cooling this vehicle-mounted cool box is mounted.
In addition, the delivery base is separately equipped with a freezer for freezing the cryogen and a refrigerator for storing products that are to be kept cold, and the number required from the freezer at the delivery base at the time of product delivery. The cold-reserving agent was taken out, and a predetermined amount of products and the like were taken out from the refrigerator and loaded into the above-mentioned in-vehicle cold storage for home delivery.

During delivery, the cooling device is driven by receiving power from the engine of the light vehicle so as to keep the inside temperature of the in-vehicle cool box at a constant temperature.
In addition, in the conventional cold-storage vehicle for home delivery, as shown in the following Patent Document 1, the main body portion where the load of the cooling device is increased is installed in the delivery base, and the latent heat lid cooling material cooled by the main body portion of the cooling device is provided. A cold car for home delivery has been developed in which only the cold plate filled with sardine is installed in the cooler of the cold car for home delivery.

JP-A-3-207974

However, as described above, when both a refrigerator for freezing refrigerant and a refrigerator for storing goods are installed in the delivery base, a large installation space is required, resulting in a large amount of equipment costs.
Moreover, since the said freezer and refrigerator must be operated for 24 hours, an electricity bill is also foolish.
In addition, in the case of a refrigerated vehicle for home delivery equipped with all of the cooling device or a part of the cooling device including the heat converter such as the cold plate, only the amount of the mounted cooling device. Since the weight increases, the fuel consumption of the cold car for home delivery deteriorates.
Further, when the cooling device is mounted on the delivery vehicle, the power of the cooling device is often received from the engine of the delivery vehicle amount, so that the service life of the delivery vehicle is shortened due to exhaustion of the engine.

  The present invention has been made based on such points, and the object of the present invention is to reduce the weight of the delivery vehicle by eliminating a cooling device that directly cools the in-vehicle cooler during operation of the delivery vehicle. In addition to improving fuel efficiency and extending service life, it is possible to reduce the installation space of equipment installed in the distribution base and reduce the equipment cost by building an efficient and inexpensive cooling system that matches the operating hours of the delivery vehicle. In-vehicle cooler capable of reducing power consumption, home delivery cooler equipped with the in-vehicle cooler, cooling system for the in-vehicle cooler, and cooling method for the in-vehicle cooler using the cooling system Is to provide.

  In order to achieve the above object, an on-vehicle cold storage according to claim 1 of the present invention is an on-vehicle cold storage that stores a product to be cooled while maintaining a constant temperature. A freezing room for cooling to a predetermined temperature and freezing; and a refrigerated room for storing a cold-reserved product and a cold-retaining agent during operation of the delivery vehicle, and storing in a state kept at a predetermined temperature, and the freezing room, A partition wall that allows the temperature of the cooled freezer compartment to propagate into the refrigerator compartment is provided between the refrigerator compartment and the temperature in the refrigerator compartment is cooled by the propagation of the temperature from the partition wall. It is characterized by being comprised.

  The in-vehicle cooler according to claim 2 is the in-vehicle cooler according to claim 1, wherein the freezer is supplied with cool air supplied from a cooling device installed outside the in-vehicle cooler. An openable and closable air supply port that flows into the freezer compartment via the air duct for opening, and an openable and closable exhaust port that returns the warmed air that has flowed into the freezer compartment and returned to the cooling device via the exhaust air duct; And an openable / closable take-out port that serves as a carry-in / carry-out port for the refrigerant.

  The on-vehicle cooler according to claim 3 is the on-vehicle cooler according to claim 2, wherein the air supply port and the exhaust port are provided with a magnet detachable joint structure having an inner flange and an outer flange in a stepped shape. A cold-resistant packing is attached to a connecting portion between the joint structure and the air supply duct or the air exhaust duct.

According to a fourth aspect of the present invention, there is provided a refrigerated vehicle having a vehicle-mounted cooler, wherein a part or all of the vehicle-mounted cooler is mounted on a carrier bed of a delivery vehicle and is used for refrigerated delivery. The delivery vehicle is not equipped with a cooling device for cooling the in-vehicle cooler, and the in-vehicle cooler is the in-vehicle cooler according to any one of claims 1 to 3. It is what.

  According to a fifth aspect of the present invention, there is provided a refrigerated vehicle having a vehicle-mounted cooler according to claim 5, wherein the vehicle-mounted refrigerated vehicle having a vehicle-mounted cooler according to claim 4 has the vehicle-mounted refrigerated vehicle in a front room on a loading platform of the delivery vehicle. A refrigerating room of the cool box is provided, and a freezer room of the in-vehicle cool box is provided in a rear room on the loading platform of the delivery vehicle.

  In addition, the cooling system having an in-vehicle cool box according to claim 6 is a cooling system having an in-vehicle cool box that cools the in-vehicle cool box to a predetermined temperature. In-vehicle cooler with a refrigeration room stored in the storage room and a freezer room for freezing the cold insulation agent, and separated from the in-vehicle cooler, and installed outside thereof to supply cold air to the freezer compartment of the in-vehicle cooler A refrigeration chamber, a detachable air supply duct connecting the cooling chamber air supply port and the cooling device, and a detachable exhaust air connecting the cooling chamber exhaust port and the cooling device A duct is provided, and the on-vehicle cool box is the on-board cool box according to any one of claims 1 to 3.

  According to a seventh aspect of the present invention, there is provided a cooling method for an in-vehicle cooler using a cooling system having an in-vehicle cooler. At the time of operation standby, a cooling agent is accommodated in the freezer compartment, a cooling device is driven to supply cold air into the freezer compartment, and the cryogen is cooled to a predetermined temperature and frozen, and the primary cooling step. A secondary cooling step for cooling the temperature in the refrigerator to a predetermined temperature using propagation of the cooled temperature in the freezer compartment to the refrigerator compartment, and a product to be cooled in the refrigerator compartment cooled in the secondary cooling step, The cryogen frozen in the primary cooling process is accommodated and delivered while keeping the refrigeration room at a predetermined temperature by the cooling in the secondary cooling process and the cold insulating action of the cryogen during the operation of the delivery vehicle. A cold insulation delivery process, As serial cooling system is characterized in that using a cooling system with a vehicle-mounted type refrigerator according to claim 6, wherein.

The following actions can be obtained by the above means. First, in an in-vehicle cooler, a partition wall that allows propagation of the temperature of the cooled freezer compartment to the refrigerator compartment is provided between the freezer compartment and the refrigerator compartment. The refrigerating room is cooled secondarily through the.
Therefore, it is not necessary to provide a separate cooling device for cooling the refrigerator compartment, so that the equipment cost can be reduced and the management cost such as land rent can be reduced by reducing the installation space of the equipment.

In addition, when cooling in the freezer compartment is performed using cold air supplied from a cooling device installed outside the in-vehicle cooler, there is no need to provide a heat exchanger or the like in the freezer compartment. In addition, the space in the freezer compartment can be widely used, and the quantity of the cooling agent that can be accommodated increases.
Also, a magnet detachable joint structure having an inner flange and an outer flange in steps is provided at the air supply and exhaust ports of the freezer compartment, and a connection portion between the joint structure and the air supply or exhaust air duct When the cold-proof packing is attached to the air supply air duct, the air supply air duct and the exhaust air duct can be easily attached and detached when the delivery vehicle is on standby. The airtightness at the time of connection is maintained well even in a refrigerated environment.

In addition, in a delivery car that has an in-vehicle cooler, the delivery vehicle is not provided with a cooling device that cools the in-vehicle cooler. The fuel efficiency of the vehicle is improved.
Further, since the power of the cooling device is received from other than the engine of the delivery vehicle, it is possible to reduce the consumption of the engine and to extend the service life of the delivery vehicle.

Further, when the refrigerator compartment is disposed in the front chamber on the carrier bed of the delivery vehicle and the freezer compartment is disposed in the rear chamber on the carrier platform of the delivery vehicle, the freezer compartment and the cooling performed when the delivery vehicle is on standby The connection with the apparatus is facilitated, and the length of the air supply duct and the exhaust air duct can be shortened to increase the cooling efficiency of the freezer compartment.
In a cooling system equipped with an in-vehicle cooler, an in-vehicle cooler with a refrigerator compartment and a freezer compartment, a cooling device for cooling only the freezer compartment, an air supply duct, and exhaust air Because it is configured to include a duct, a freezer and a refrigerator separate from the in-vehicle cooler that has been separately prepared in the delivery base are not required, and the equipment cost to be installed in the delivery base is reduced. It is possible to make the installation space smaller and to effectively use the installation space.

In addition, in the cooling method of the in-vehicle cooler using the cooling system, the cooling device is directly driven and cooled only in the primary cooling process performed for the freezer compartment during standby of the delivery vehicle. The secondary cooling process performed for the refrigerator compartment when the delivery vehicle is waiting for operation and the cold insulation delivery process performed for the refrigerator compartment when the delivery vehicle is operated are performed without using the cooling device.
Therefore, it is possible to effectively use the time when the delivery vehicle that is not delivering to home is in operation standby, efficiently cool the freezer compartment and freeze the cryogen in a short operating time of the cooling device, and save electricity costs, etc. Is planned.

In addition, when the delivery vehicle is on standby, the secondary cooling process for cooling the refrigerator compartment is performed in parallel with the primary cooling process. Therefore, when the delivery vehicle starts operating, the cold storage product and the coolant are placed in the refrigerator compartment. At the time of storage, the temperature in the refrigerator compartment is lowered to a predetermined temperature necessary for storing them.
Therefore, a quick transition to the operation of the delivery vehicle is possible, and the temperature rise in the refrigerator compartment during the operation of the delivery vehicle can be suppressed to be small in combination with the cold insulation effect by the cold insulation agent.

According to the vehicle-mounted cooler of the present invention, the delivery cooler equipped with the vehicle-mounted cooler, the cooling system equipped with the vehicle-mounted cooler, and the cooling method of the vehicle-mounted cooler using the cooling system, the delivery vehicle Since the cooling device that directly cools the inside of the in-vehicle cooler during the operation of the vehicle is eliminated, the weight reduction of the delivery vehicle can improve the fuel consumption of the delivery vehicle and extend the service life.
In addition, by constructing an efficient and inexpensive cooling system that matches the operating hours of the delivery vehicle, it is possible to reduce the installation space of equipment installed at the delivery base and reduce equipment costs and power consumption.

It is a figure which shows embodiment of this invention, and is a perspective view from diagonally backward which shows the state at the time of operation | movement of the cold-storage vehicle for delivery provided with the vehicle-mounted cold storage. It is a figure which shows embodiment of this invention, and is a perspective view from the diagonal front which shows the state at the time of the operation standby of the delivery cold-storage vehicle provided with the vehicle-mounted cold storage. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows embodiment of this invention, and is a side view which shows the cooler vehicle for home delivery provided with the vehicle-mounted cooler. It is a figure which shows embodiment of this invention, and is a top view which shows the cooler vehicle for delivery provided with the vehicle-mounted cooler. It is a figure which shows embodiment of this invention, and is a rear view which shows the cold-storage vehicle for delivery provided with the vehicle-mounted cold storage. It is a figure which shows embodiment of this invention, and is an expanded sectional view of the A section in FIG. It is a figure which shows embodiment of this invention and is a front view which shows a cooling device. It is a figure which shows embodiment of this invention and is a side view which shows a cooling device. It is a figure which shows embodiment of this invention and is a top view which shows a cooling device.

Hereinafter, an embodiment for carrying out the present invention will be described by taking the embodiment shown in FIGS. 1 to 9 as an example.
In the following description, first, the delivery vehicle 3 equipped with the in-vehicle cooler according to the present invention will be described focusing on the configuration of the in-vehicle cooler 1 according to the present invention, and then the in-vehicle cool according to the present invention. The cooling system 5 having a warehouse will be described focusing on the configuration of the cooling device 7. And the cooling method of the vehicle-mounted cool box of this invention performed by finally using this cooling system 5 is demonstrated.

(1) Configuration of On-vehicle Cooler and Home Delivery Cooling Vehicle A delivery cooler 3 according to this embodiment is configured by mounting the on-vehicle cooler 1 on the loading platform 11 of the delivery vehicle 9. In the front chamber 13 on the loading platform 11 of the delivery vehicle 9, a refrigerator compartment 15 of the in-vehicle cooler 1, which will be described in detail below, is disposed, and in the rear chamber 17 on the loading platform 11 of the delivery vehicle 9, A freezer compartment 19 is provided.
In addition, the delivery vehicle 9 is not equipped with a vehicle-mounted cooling device that cools the refrigerator compartment 15 to the freezer compartment 19 of the vehicle-mounted cool box 1. In the present embodiment, the delivery vehicle 9 is a component of the cooling system 5. In the delivery base 21, a stationary cooling device 7 for cooling the inside of the freezer compartment 19 is disposed.

In addition, as the delivery vehicle 9 for the cool delivery car 3 for home delivery, a light-weight car with a small turn that can enter a narrow alley can be applied as an example.
Further, the in-vehicle cooler 1 stores the cryogen 23 when the delivery vehicle 9 is in operation standby, cools it to a predetermined temperature, and freezes it. When the delivery vehicle 9 is in operation, It is basically configured by including the refrigerating chamber 15 that houses the cold-reserving agent 23 and stores it in a state kept at a predetermined temperature.

And as one of the characteristic structures of the vehicle-mounted cool box 1 of the present invention, the temperature in the cooled freezer compartment 19 is propagated into the refrigerator compartment 15 between the freezer compartment 19 and the refrigerator compartment 15. A partition wall 27 is provided, and the temperature in the refrigerator compartment 15 is cooled by the propagation of the temperature from the partition wall 27.
Note that when the delivery vehicle 9 is on standby, as an example from when delivery of the cold-insulated article 25 ends and the delivery vehicle 9 returns to the delivery base 21 and departs for delivery to the next day, it is 18: 00 to 9 0:00, 15 hours, of which about 12 hours are used to cool the cryogen 23 contained in the freezer compartment 19 to about −25 ° C. and freeze it.

On the other hand, when the delivery vehicle 9 is in operation, as an example from the departure from the delivery base 21 to the delivery of the cooled product 25, the delivery of the cooled product 25 is terminated and the delivery base 21 is returned. It is 9 hours from 9:00 to 18:00, and during this time, the temperature in the refrigerator compartment 15 is kept at about 10 ° C. or less to deliver and collect the cooled product 25 and the cooling agent 25.
Further, the top plate 29 and the bottom plate 31, the left and right side plates 33 and 35, and the back plate 37 of the rear chamber 17 serving as the freezer compartment 19 are constituted by thick heat insulation panels having a thickness of about 95 mm as an example. In FIG. 5, an air supply port 41 through which cool air A supplied from a cooling device 7, which will be described later, flows into the freezer compartment 19 through an air supply air duct 39, and the air supply port 41. As an example of closing the door, a single-opening-type opening / closing lid 43 is provided.

In addition, an exhaust port 47 that returns the warmed air A that has flowed into the freezer compartment 19 to the lower right corner of the back plate 37 in FIG. 5 and returns to the cooling device 7 described later via the exhaust air duct 45. As an example of closing the exhaust port 47, a single-opening type open / close lid 49 is provided.
Further, in FIG. 5 of the back plate 37, an outlet 51 having a large diameter that is cut out in a rectangular shape is formed from the lower left corner to the center of the back plate 37. The outlet 51 is a cooling agent. There are 23 loading / unloading exits. In addition, a single-opening type open / close door 53 is attached to the take-out port 51 as an example for closing the take-out port 51.

Further, as shown in FIG. 6A, the air supply port 41 and the exhaust port 47 are provided with a magnet detachable joint structure 59 having a circular inner flange 55 and a rectangular outer flange 57 as viewed from the rear as shown in FIG. A cold-resistant packing 61 is attached to a connection portion between the joint structure 59 and the air supply air duct 39 or the exhaust air duct 45.
Incidentally, by providing such a joint structure 59 and cold-resistant packing 61, the air supply air duct 39 and the exhaust air duct 45 can be smoothly attached and detached, and good airtightness at the time of connection is ensured. .
When the air supply port 41 and the exhaust port 47 are closed in the outer flange 57 of the joint structure 59, the opening / closing lid 43 and the opening / closing lid 49 are accommodated as shown in FIG. It is configured so that there is no unevenness on the back.

In addition, the front chamber 13 serving as the refrigerating chamber 15 is formed somewhat larger than the rear chamber 17. The top plate 29 and the bottom plate 31 of the front chamber 13 and the side plate 35 on the right side when viewed from the front are configured as an example by a thick heat insulation panel having a thickness of about 95 mm, which is the same as the rear chamber 17, and viewed from the front. The left side plate 33A is constituted by a thin heat insulation panel having a thickness of about 25 mm, and the front plate 38 is constituted by an intermediate heat insulation panel having a thickness of about 50 mm.
The left side plate 33A of the front chamber 13 is formed with a rectangular opening 63 having a large diameter that is used when the cold storage product 25 and the cold storage agent 23 stored in the refrigerator compartment 15 are taken in and out. A sliding door 65 that slides in the front-rear direction is assigned to the outside of the opening 63 so that the opening 63 can be closed.

Here, as the to-be-cooled product 25 accommodated in the refrigerator compartment 15, various products such as milk, milk products such as yogurt, juice, health food, fresh food, processed food, etc. that need to be kept at a temperature of 10 ° C. or less. The product is applicable.
The cold-reserving agent 23 to be put in the refrigerator 15 together with the cold-reserved product 25 is used to keep the temperature in the refrigerator 15 at a predetermined temperature, and in a cold-reservation box for home delivery such as a milk box placed in each household. It can also be used as a cold insulation agent.

Moreover, as the partition wall 27 provided between the freezer compartment 19 and the refrigerator compartment 15, a heat insulation panel having a thickness of about 50 mm can be used as an example, and the top plate constituting the other wall surface of the freezer compartment 19 29, by making the thickness thinner than the bottom plate 31, the left and right side plates 33, 35, and the back plate 37, the temperature in the freezer compartment 19 can be propagated into the refrigerator compartment 15.
And by using the secondary cooling mode through the partition wall 27 as the cooling mode of the refrigerator compartment 15, the weight reduction of the delivery vehicle 9 is realized, and the fuel consumption of the delivery vehicle 9 is improved and the service life is improved. It is intended to be long.

(2) Configuration of Cooling System The cooling system 5 according to the present embodiment is a cooling system for the in-vehicle cool box 1 provided with the in-vehicle cool box 1 having the above-described configuration.
Specifically, the on-vehicle cooler 1 described above and the cooling device 7 that is separated from the on-vehicle cooler 1 and is installed outside the cooler 1 and supplies the cold air A into the freezer compartment 19 of the on-vehicle cooler 1. A detachable air supply duct 39 that connects the air supply port 41 of the freezer compartment 19 and the cooling device 7, and a detachable connector that connects the exhaust port 47 of the freezer compartment 19 and the cooling device 7. This cooling system 5 is configured by including an exhaust air duct 45.

  The cooling device 7 is installed in an installation space of about two mini cars provided in the delivery base 21. Specifically, as shown in FIGS. 7 to 9, a rectangular frame-like support frame 69 supported upward by the legs 67, a heat exchanger installed in the support frame 69, a feed fan, and the like And an exhaust unit 73 provided in the space below the support frame 69 and provided with an exhaust fan or the like for releasing air A heated by the heat exchanger to the outside. And the cooling device 7 is comprised.

Further, the cold air supply unit 71 has, as an example, a front outlet 75 for sending the generated cold air A toward the freezer compartment 19, and the air A in the freezer compartment 19 is placed in the cold air supply unit 71. An intake port 77 for taking in again is formed on the left side surface as an example.
Then, the outlet 75 of the cold air supply unit 71 and the air supply port 41 of the freezing chamber 19 are connected by an air supply air duct 39, and the exhaust port 47 of the freezing chamber 19 and the intake port of the cold air supply unit 71 are connected. 77 is connected by an exhaust air duct 45 so that a circulation path of cold air or air A is formed between the freezer compartment 19 and the cold air supply unit 71.

The air supply duct 39 and the exhaust air duct 45 are constituted by a circular flexible duct having a diameter of about 300 mm and a heat insulating layer 79 formed on the outer peripheral side.
Further, the proximal end portion of the air supply air duct 39 is always fixedly attached to the outlet 75 of the cold air supply unit 71, and the front end portion of the air supply air duct 39 is connected to the joint described above. The structure 59 is configured to be detachably connected to the air supply port 41 of the freezer compartment 19 through the structure 59.

Similarly, the base end portion of the exhaust air duct 45 is always fixedly attached to the intake port 77 of the cold air supply unit 71, and the front end portion of the exhaust air duct 39 has the joint structure described above. It is configured to be detachably connected to the exhaust port 47 of the freezer compartment 19 through 59.
And in this invention, since the said cooling system 5 is used only for cooling the inside of the freezer compartment 19 of the vehicle-mounted cold storage 1 mounted in the cooler 3 for delivery, the cooling device 7 is comprised very compactly. In addition, the installation space for the cooling device 7 is configured to be sufficient in the narrow space as described above.

(3) Cooling method of in-vehicle cooler Next, the in-vehicle cooler cooling method of the present invention executed by using the cooling system 5 and the in-vehicle cooler 1 cooled by the cooling method are mounted. The flow of home delivery business using the home delivery cooler 3 will be described.
That is, the cooling method for the in-vehicle cooler according to the present invention includes the (A) primary cooling step and the (B) secondary cooling step that are executed when the delivery cooler 3 is on standby, and the operation of the cooler 3 for delivery. And (C) a cold insulation delivery process executed at the time.

(A) Primary cooling step In the primary cooling step, the cold insulation agent 23 is accommodated in the freezer compartment 19 and the cooling device 7 is driven to supply cold air A into the freezer compartment 19 to provide the cold insulation agent 23 as described above. This is a step of cooling to a temperature of
In this step, first, the home delivery cooler 3 that has returned after returning home is moved to a predetermined position where the cooling device 7 is installed and stopped. Next, the supply air duct 39 extending from the cooling device 7 is connected to the supply port 41 of the freezing chamber 19, and the exhaust air duct 45 extending similarly from the cooling device 7 is connected to the exhaust port 47 of the freezing chamber 19. Connect to.

Further, the open / close door 53 is opened in the freezer compartment 19 and a necessary number (for example, 300 to 400) of the cold insulating agents 23 is put therein.
Then, the cooling device 7 is driven to generate cold air A of about −35 ° C. from the cold air supply unit 71, and the cold air A is supplied into the freezer compartment 19 via the air supply air duct 39.
The air A in the freezer compartment 19 is returned again into the cold air supply unit 71 through the exhaust air duct 45, and the cold air A is circulated between the freezer compartment 19 and the cold air supply unit 71.
When the circulation of the cold air A is continued for about 12 hours, the temperature in the freezer compartment 19 is lowered to about −25 ° C., and the cooling agent 23 in the freezer compartment 19 is frozen.

(B) Secondary cooling step The secondary cooling step uses the propagation of the temperature in the freezer compartment 19 cooled in the primary cooling step into the refrigerator compartment 15 to set the temperature in the refrigerator compartment 15 to the predetermined value described above. It is a process of cooling to temperature.
That is, in this process, the inside of the refrigerator compartment 15 is not directly cooled, but the structure in which the inside of the refrigerator compartment 15 is indirectly cooled by using the freezer compartment 19 itself cooled in the primary cooling process as a cooling means. doing.

Therefore, in carrying out this process, there is no need for an independent separate cooling means, so that the equipment cost can be greatly reduced and no operation for driving the separate cooling means is required. It does not take time.
And by execution of this process, the temperature in the refrigerator compartment 15 falls to 10 degrees C or less, and reaches the storage possible temperature of the to-be-cooled goods 25.

(C) Cold storage delivery process The cold storage delivery process accommodates the cold-reserved product 25 and the cold storage agent 23 frozen in the primary cooling process in the refrigerator compartment 15 cooled in the secondary cooling process. Is a step of delivering while keeping the refrigerator compartment 15 at the above-mentioned predetermined temperature by the cooling in the secondary cooling step and the cold-retaining action of the cold-retaining agent 23.
In this step, the slide door 65 is opened in the refrigerator compartment 15 that has reached the storage temperature in the secondary cooling step, and the cold-reserved product 25 and the cryogen 23 frozen in the primary cooling step are accommodated. The sliding door 65 is closed, and the home delivery cooler 3 is departed from the delivery base 21.

In the refrigerator compartment 15 of the delivery cooler 3 leaving the delivery base 21, the temperature in the refrigerator compartment 15 is continuously maintained at a temperature of 10 ° C. or less by the cold insulation action by the refrigerant 23.
When the delivery car reaches the delivery location, the sliding door 65 of the refrigerating room 15 is opened, and the necessary number of the cold-reserved products 25 and the refrigerating agents 23 in the refrigerating room 15 are taken out and placed in each home serving as the delivery location. In the cold storage box, the drink 25 or the used cold-reserved product 25 and the cold-reserving agent 23 are collected.

The collected cold-reserved product 25 is placed in the refrigerator compartment 15, and the collected cold-reserving agent 23 is placed in the freezer compartment 19 for the next cooling.
When the delivery of one day is completed after going around all the delivery areas, the delivery-use cold storage vehicle 3 returns to the delivery base 21 again, takes out the cooled product 25 whose purpose is finished from the refrigerator compartment 15, and supplies the air duct 39 for supply. The exhaust air duct 45 is connected to the freezer compartment 19 and the next cycle is shifted to the primary cooling step, the secondary cooling step, and the cold insulation delivery step.

Therefore, according to the cooling method of the in-vehicle cooler of the present invention, the freezer compartment can be efficiently used in a short operation time of the cooling device 7 by effectively utilizing the time zone during the operation standby of the delivery vehicle 9 that is not delivering to home. Since the cooling of the inside 19 and the refrigerator compartment 15 and the freezing of the cooling agent 23 can be performed at the same time, it is possible to save electricity.
In addition, since the refrigerator compartment 15 has reached the storable temperature by the secondary cooling means, it is possible to promptly shift to the operation of the delivery vehicle 9, and the temperature in the refrigerator compartment 15 during the operation of the delivery vehicle 9 is also The cold-reserving effect of the cold-reserving agent 23 also acts to keep the temperature at 10 ° C. or lower, which is a storable temperature.

In addition, the vehicle-mounted cool box 1 according to the present invention, the delivery cooler 3 equipped with the on-board cool box, the cooling system 5 equipped with the on-board cool box, and the cooling method of the on-board cool box using the cooling system. Is not limited to the above-described embodiment, and can be modified within the gist of the invention.
For example, the refrigerating room 15 and the freezing room 19 are not limited to the one-piece vehicle-mounted cooler 1 described in the above-described embodiment with the partition wall 27 disposed at the front and rear, but are provided on a plurality of surfaces constituting the refrigerating room 15. It is also possible to form the partition wall 27 so that the vehicle-mounted cool box 1 having an integrated structure in which a wider area is covered by the freezer compartment 19 is formed.

  In addition, the vehicle-mounted cooler 1 having a separate structure in which the refrigerator compartment 15 and the freezer compartment 19 are separated, and the refrigerator compartment 15 and the refrigerator compartment 19 are brought into close contact with each other when the primary cooling step and the secondary cooling step are performed. The partition wall 27 is formed in the delivery vehicle 9 so that the refrigerator compartment 15 and the freezer compartment 19 are separated from each other when the cold delivery process is performed, and only the cold storage compartment 15 containing the cold article 25 and the cold insulation agent 23 is accommodated in the delivery vehicle 9. It is also possible to carry out delivery work by mounting on the loading platform 11.

  Further, in the in-vehicle cooler 1 described in the above embodiment, the number of the cryogens 23 put in the freezer compartment 19 is increased and not all of the frozen cryogens 23 are moved to the refrigerator compartment 15, but one of them. It is also possible to leave the part in the freezer compartment 19. In this way, the cold-reserving agent 23 left in the freezer compartment 19 that has been cooled to a lower temperature is less likely to melt, so when the temperature of the day is high or when the delivery time is long, the refrigerator compartment 15 It is also possible to adjust the temperature in the refrigerator compartment 15 by exchanging the cold-reserving agent 23 that has been melted in step 1 and the cold-retaining agent 23 in the freezer 19.

In addition, the temperature propagation function of the partition wall 27 is not limited to the case where the partition wall 27 is thinned, but the material and structure of the partition wall 27 (for example, fine ventilation holes or fine meshes). This can be realized by different structures) such as forming a net in part.
Furthermore, the configuration of the cooling device 7 is not limited to the configuration of the above-described embodiment, and various configurations of the cooling device 7 can be applied, and when the delivery base 21 includes a separate cooling facility, the cooling facility 7 It is also possible to cool the inside of the freezer compartment 19 using

  The in-vehicle cooler of the present invention, a delivery cooler equipped with the in-vehicle cooler, a cooling system with the in-vehicle cooler, and a cooling method for the in-vehicle cooler using the cooling system are: It can be used in the manufacture and use fields of in-vehicle refrigerated storage that keeps the product at a constant temperature.Especially an efficient cooling effect can be obtained with an inexpensive structure, improving the fuel efficiency of the delivery vehicle and improving the service life. It has applicability when it is desired to increase the length and save electricity costs.

DESCRIPTION OF SYMBOLS 1 Car-mounted cooler 3 Home delivery cooler 5 Cooling system 7 Cooling device 9 Delivery vehicle 11 Cargo bed 13 Front room 15 Refrigerating room 17 Rear room 19 Freezer room 21 Delivery base 23 Coolant 25 Cooled goods 27 Partition wall 29 Top plate 31 Bottom plate 33 Side plate 35 Side plate 37 Back plate 38 Front plate 39 Air supply duct 41 Air supply port 43 Opening / closing lid 45 Exhaust air duct 47 Exhaust port 49 Opening / closing lid 51 Extraction port 53 Opening / closing door 55 Inner flange 57 Outer flange 59 Joint structure 61 Cold resistant packing 63 Opening 65 Sliding door 67 Leg 69 Support frame 71 Cold air supply unit 73 Exhaust unit 75 Outlet 77 Intake port 79 Heat insulation layer A Cold air (air)

Claims (7)

In an in-vehicle cooler that keeps the product to be cooled at a constant temperature,
A freezing room that contains a cooling agent during standby of the delivery vehicle, cools to a predetermined temperature, and freezes;
A refrigerating room for storing a cold-reserved product and a cold-retaining agent during operation of the delivery vehicle and storing it at a predetermined temperature; and
A partition wall is provided between the freezer compartment and the refrigerating compartment to allow the temperature of the cooled freezer compartment to propagate to the refrigerating compartment, and the temperature in the refrigerating compartment is controlled by the temperature propagation from the partition wall. An in-vehicle cooler that is configured to cool. In the freezer compartment, an openable and closable air supply port for allowing cold air supplied from a cooling device installed outside the in-vehicle cooler to flow into the freezer compartment via an air supply air duct,
An exhaust port that can be opened and closed to return the warmed air flowing into the freezer compartment back to the cooling device through an exhaust air duct;
An in-vehicle cool box according to claim 1, further comprising an openable and closable take-out port that serves as a carry-in / out port for the refrigerant. The air supply port and the exhaust port are provided with a magnet detachable joint structure having an inner flange and an outer flange in steps.
The in-vehicle cold storage according to claim 2, wherein a cold-resistant packing is attached to a connection portion between the joint structure and the air supply duct or the exhaust air duct. In a refrigerated vehicle for delivery to be used for delivery of refrigerated products by mounting a part or all of the in-vehicle refrigeration store on the loading platform of the delivery vehicle,
The delivery vehicle is not equipped with a cooling device for cooling the in-vehicle cool box, and the in-vehicle cool box is the in-vehicle cool box according to any one of claims 1 to 3. A refrigerated vehicle for home delivery equipped with an in-vehicle cooler. A refrigeration room of the in-vehicle cold storage is disposed in a front room on a loading platform of the delivery vehicle,
5. The cold-reserving vehicle for home delivery equipped with an in-vehicle cooler according to claim 4, wherein a freezer compartment of the in-vehicle cooler is disposed in a rear chamber on a loading platform of the delivery vehicle. In a cooling system equipped with an in-vehicle cooler that cools the in-vehicle cooler to a predetermined temperature,
An in-vehicle cooler equipped with a refrigeration room for storing the product to be kept cold at a constant temperature and a freezing room for freezing the cryogen;
A cooling device that is separated from the in-vehicle cooler and is installed outside the cooler to supply cold air to the freezer compartment of the in-vehicle cooler,
A removable air duct for connecting and disconnecting the air supply port of the freezer compartment and the cooling device,
A detachable exhaust air duct connecting the exhaust port of the freezer compartment and the cooling device;
The said vehicle-mounted cooler is the vehicle-mounted cooler according to any one of claims 1 to 3, wherein the cooling system includes the vehicle-mounted cooler. In the cooling method of the in-vehicle cooler using the cooling system with the in-vehicle cooler,
When waiting for operation of a delivery vehicle equipped with an in-vehicle cooler, the cooler is stored in the freezer compartment, the cooler is driven to supply cool air to the freezer compartment, and the cooler is cooled to a predetermined temperature. A primary cooling step for freezing,
A secondary cooling step of cooling the temperature in the refrigerator to a predetermined temperature using propagation of the temperature in the freezer compartment cooled in the primary cooling step to the refrigerator compartment; and
The product to be cooled and stored in the refrigeration room cooled in the secondary cooling step and the cryogen frozen in the primary cooling step are accommodated, and during the operation of the delivery vehicle, the cooling in the secondary cooling step and the cold insulating agent are performed. A cold insulation delivery process for delivering the cold storage room while maintaining the predetermined temperature by the cold insulation action of
The cooling system provided with the on-vehicle cool box according to claim 6 as the cooling system.

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