JPS5912277A - Refrigerator for car - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an on-vehicle refrigerator, in which a refrigerator box for storing stored items and a cooling unit can be easily separated, and in particular, a basic structure related to the cooling performance of stored items. It is related to.

A conventional in-vehicle refrigerator will be explained with reference to FIGS. 1 to 3. FIG. 1 is a diagram showing the overall configuration, where Σ± is a cooling unit and LA is a refrigerated box, which is fitted together by a base band 53, and the two can be separated, but the refrigerated box Cooling unit 1 separated from 1
As shown in FIG. 2, the unit includes a unit consisting of a compressor, a radiator, etc., and a direct cooling type cooler 54 which is formed independently to be placed in the foot of the refrigerated box. As shown in FIGS. 1 and 3, the cooler 54 is of large L-shape and has the same width and height in two directions inside the refrigerator box. When used as a refrigerator, the cooling unit 51 is joined and fitted so that the cooler 54 is installed at a predetermined position in the refrigerator box 52, and the refrigerator is operated with a 12V DC power source, such as a car. According to this structure, when installing the cooler 54 inside the refrigerator box 52, the lid of the refrigerator box must be opened by lifting the entire cooling unit 51 from the top and inserting the cooler 54. Therefore, 1
This operation is required each time the cooling unit 11, which is close to 0 Kv, is installed or removed, which is inconvenient in a narrow space such as inside a car.

In addition, since the cooling method is a direct cooling type using the cooler 54 inside the refrigerated box 52, the convection inside the box becomes natural convection, the cooling rate is slow, and depending on the location of the stored items, the cooler 54
4. There is a large temperature difference between stored items near and far away, and it takes a long time to drive to reduce the temperature difference, so it is not possible to cool down in a short time for leisure use in cars etc. It has serious drawbacks. Furthermore, as described above, since the cooler 54 of the removed cooling unit 51 is exposed, there are problems in handling and cleaning, such as leakage and damage to the joint between the cooling unit L± and the cooler 54. . Furthermore, since this refrigerator is only powered by 12V DC, it also has the drawback of requiring a separate power supply unit if you want to cool down stored items before going out for leisure or the like.

The purpose of the present invention is to improve such drawbacks, and to provide a separate type on-vehicle refrigerator that is easy to handle and employs a forced circulation cooling system in which cold air obtained from a compact and lightweight cooling unit is sent into a refrigerator box using a fan. It is about providing.

The compressor and blower used in the cooling unit are AC 1
Highly reliable as it uses 00V general purpose products.
In addition to being able to provide a long-life product, the refrigerator can be easily operated using a household AC power source, or can be operated using a built-in inverter when used with a DC power source such as an automobile.

An embodiment of the present invention will be described below with reference to FIGS. 4 to 8. Figure 4 is a diagram showing the overall configuration of an on-vehicle refrigerator.
is a cooling unit that integrates a refrigeration cycle, and λ is a refrigerated box that stores objects to be cooled. Both are configured to be connected by a clamp mechanism 3, and depending on the usage method, as shown in Fig. 5, it can be easily It has a structure that allows it to be attached and detached. The cooling unit is configured as follows.

FIG. 5 (In this case, a compressor 22 for AC 100V is mounted on a base 21, a cooler 24 and a fan 25 for blowing air are installed.
a is surrounded by a heat insulating case 23 made of a heat insulating material such as styrofoam or urethane, and a blower motor 25 for AC 160 V is provided outside the heat insulating case 23, and is placed on a base 21. The inverter 8 that boosts 12V DC to 100V AC has a signal section 8a that converts AC to DC and an output section 8 that boosts 12V to 100V.
The output part 8b is located on the heat insulation case 23, and the output part 8b is located on the heat insulation case 23. A heat sink 30 is arranged in a U-shape on the base 21 so as to surround the inverter 8, and a back plate 29 is formed in a U-shape to face the heat sink 30. A cold air discharge port 26 and a cold air suction port 27 are provided for forcing the cold air heat-exchanged in the container 24 into the refrigerator box g by a blower device 25, and the discharge port 26 and the cold air suction port 27 protrude from the back plate 29. The back plate 29 has a heat insulating structure 29 formed in a cylindrical shape on the corresponding surface.
A is attached. The top of the cooling unit 1 is covered with a top plate 32 having a handle 31 and provided with stops 32a and 32b protruding toward the refrigerator box 2 and the radiator 30. The refrigerated VOLKS 2 is an application of a generally commercially available leisure box. The cylindrical portions of the cold air discharge port 26 and the suction port 27 of the cooling unit 1 fit together, and the surrounding area is surrounded by a heat insulation 29a provided on the back plate 29.
The structure is sealed with the cylindrical surface of the tail. 35.36
is a heat insulating lid, and when the refrigerating box λ cooled by the cooling unit is used separately from the cooling unit, the ventilation holes 33 and 34 of the refrigerating box λ are used.
It is attached as a lid to prevent cold air from leaking, and is configured to be stored in storage portions 35a and 36a provided on the back plate 29 during cooling during normal operation. 3
7 is a shoulder belt. Figure 8 shows the power supply circuit of this in-vehicle refrigerator, and 5 is an inverter circuit.
For example, it boosts and converts the power supply voltage input from the DC 12V power supply of a car or the DC 24V power supply terminals a and b of trucks, buses, cruisers, etc. It is configured to be connected to the device 6. In addition, c and d are household AC 10
0) is a power supply terminal, and is configured to be directly connected to the refrigeration device 6 via the connection terminal 38.

As detailed above, according to the present invention, since the cooling unit is configured to forcefully circulate the cold air obtained by the refrigeration cycle using the air blower 25, the cooling rate of the stored items in the refrigerated vox λ is also fast. , there is little temperature difference in the degree of cooling of stored items, and the insulation case 23 surrounding the cooler 24
Only the fan 25b of the blower device 25 is housed inside, and the blower electric motor 25a, which is the heat generating part, is placed outside the heat insulating case 23, so there is less heat intrusion (high efficiency). In the connection, the cylindrical parts of the cold air outlet 26 and suction port 27 of the cooling unit ↓ are fitted into the ventilation holes 33 and 34 of the refrigerator box, and the insulation 2
9a and locked by the clamp mechanism 3, there is very little leakage of cold air from the ventilation portion, and operability is easy. In addition, if you separate it from the top of the cooling unit and carry only the refrigerated box, the refrigerated box 2
Since cold air leakage is prevented by attaching heat insulating covers 35 and 36 to the ventilation holes 33 and 34 of the refrigerator box 2L, the refrigerator box 2L has excellent cold retention when used alone. The power supply for operating the refrigerator also consists of an electric circuit as shown in Figure 1, so it is possible to
It boosts, converts and supplies 100V AC to the refrigeration equipment 6 with a rated power supply of 100V AC via the Inno Kuitoyo circuit 5. Also, for supplying 100V AC power for general household use,
Since it can be operated easily by simply replacing the connection cord, it is extremely user-friendly as it can be used for both AC and DC operations. Since 100V AC can be easily supplied to the above-mentioned refrigeration system 6, a general specification can be used without the need to manufacture a special specification compressor or blower motor, and parts can be standardized. This makes it possible to provide a highly reliable, long-life, and inexpensive in-vehicle refrigerator.

[Brief explanation of the drawing]

Figures 1 to 3 are diagrams explaining conventionally proposed in-vehicle refrigerators, with Figure 1 being a front view showing the overall configuration, Figure 2 being a perspective view of the cooling unit, and Figure 3 being a perspective view of the cooling unit. is a plan view when the lid is opened, FIGS. 4 to 3 are views showing one embodiment of the present invention, and FIG. 4 is a complete view. FIG. 5 is a perspective view showing the body structure, FIG. 5 is a perspective view with the cooling unit separated, FIG. 6 is a sectional view taken along line A-A in FIG. 5, and FIG. A sectional view taken along line A and FIG. 8 are electrical circuit configuration diagrams. l...cooling unit, 2...refrigerated box, 5...
- Inverter circuit, 6... Refrigeration device, 25... Air blower, 26... Cold air discharge port, 27... Suction port, 8...
...Inverter. Fig. 1 62 3 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 7 /3 Display of figure procedure amendment case person? , Manuscript '51O 1, Ceremony Y1 [1 Produced Representative Name 3 1) Masaru Katsu Shigeyo Address Address: 5 Marunouchi-chome, Chiyoda-ku, Tokyo 100
Number 1 Stock Co., Ltd. 1 Hitachi F1 Office Telephone East 435-
4221 Amendment Contents 1. The name of the invention is amended from "vehicle refrigerator" to "refrigerator" as per the attached specification. 2. We will correct the entire text of Specification Umbrella II@ as shown in the attached sheet. 6. Make corrections to all figures in the drawing as shown in the attached sheet. Clear rl + I] 1 Title of the invention
Refrigerator Patent Claim 1 provides a refrigerator in which a refrigerating box (2) for storing stored items and a cooling unit (1) having a freezing cycle are removably connected via a clamp (6) or the like. The cooler (24), the radiator (60), and the compressor (22) are arranged in the cooling unit l-(1), and the cooler (24) and the fan (25a) are arranged in the cooling unit (1). built into the thermal case (26), and the refrigerated box (2)
) are provided on the sides of the vents (, 153) and (64) to communicate with the cold air outlet (26) and cold air intake (27) of the heat insulating case (23), changing the DC voltage to AC voltage. A refrigerator characterized in that a cooling device (6) is connected to a power source via an inverter (5) and a connection terminal (38). Detailed Description of the Invention [Field of Application of the Invention] The present invention relates to a vehicle-mounted refrigerator, and more particularly, to a vehicle-mounted refrigerator in which a refrigerator box for storing stored items and a cooling unit 7) equipped with a cooling device can be easily separated. It is. [Prior Art] A conventional in-vehicle refrigerator will be explained with reference to FIGS. 1 to 3. FIG. 1 is a diagram showing the overall configuration. A cooling unit 51 includes a condenser 55, a compressor (not shown), a cooler 54, and the like. Reference numeral 52 denotes a refrigerated box, which consists of a box body 56 and a lid 57 that can be opened and closed. The cooling cornit 51 and the refrigerating box 52 are connected by a clamp 56, and the structure is such that the two 51 and 52 can be separated by removing the clamp. The cooling unit 51, which is separated from the refrigerator box 52, as shown in FIG. It is constituted by a direct cooling type cooler 54. The cooler 54, as shown in FIGS. 1 and 3,
1 approximately equal to the width and height in two directions inside the refrigerated box 52
It is a large one in the shape of a single character. When using it as a refrigerator, the cooling unit 51 is connected and fitted in a predetermined position in the refrigerator box 52 so that the cooler 54 can be accessed, and a direct current power source (for example, 12v
). According to this structure, when installing the cooler 54 inside the refrigerator box 52, open the lid 57 of the refrigerator box 52, lift the very heavy cooling unit 51 from the top, insert the cooler 54,
When removing the refrigerator, the reverse operation is performed, which is inconvenient in a crowded place such as inside a car.Also, since the inside of the refrigerator box 52 is directly cooled by the cooler 54, the box The interior will be cooled by natural convection,
The cooling rate is slow, and depending on the location of the stored items, there is a large temperature difference between stored items that are close to the cooler 54 and those that are far away, and long-term operation is required to reduce the temperature difference. For leisure use in cars, etc., it has a serious drawback if it does not cool down in a short time. Furthermore, since the cooler 54 of the removed cooling unit 51 is exposed, there are problems in handling, such as leakage and damage to the joint between the cooling unit 51 and the cooler 54. . Moreover, since it is a DC-only power supply, it has the disadvantage that a separate Ichihara unit is required if you want to cool down stored items at home before going out by car. [Object of the Invention] The present invention enables the refrigerated box to be simply removed laterally from the refrigerated unit, increases the cooling rate, and reduces temperature differences depending on the position of stored items, and the refrigerated unit after the refrigerated box is removed. This eliminates the risk of damage to the exposed eaves and joints of the cooler, making it easy to install whether it is an AC source or a DC source.
The purpose is to provide a refrigerator that can be used for a long time. [Summary of the Invention] The present invention connects a refrigerated box (2) that stores stored items and a cooling unit (1) having a refrigeration cycle with a clamp (
6) In a refrigerated vehicle that is removably connected via a cooler (24), a radiator (60), and a compressor (22),
is placed in the cooling unit (1), and the cooler (24
) and a fan (25a) are built into a heat insulating case (26) disposed in the cooling unit (1), and ventilation holes (36) and (34) are provided on the side of the refrigerator box (2) to provide the heat insulation. The cold air discharge ID (26) of the case (23) and the cold air suction port (27) are connected to each other, and an inverter (5) and a connecting terminal (38) are connected to change the 1M current voltage to AC voltage.
) The refrigerator is characterized in that the cooling device (6) is connected to the main source via the refrigerator. [Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 4 to 8. Reference numeral 1 denotes a cooling unit, which includes equipment, ventilation equipment, control equipment, etc. that constitute a refrigeration cycle. Reference numeral 2 denotes a refrigerated box for storing stored items, which consists of a box body 2a and a lid 2b that can be opened and closed. The cooling unit 1 and the refrigerator box 2 are fastened together by a clamp 6.
The structure is such that it can be attached and detached by removing the clamp 6 as shown in FIG. The cooling unit 1 is configured as follows. An AC compressor 22 is placed on a base 21, and a cooler 24 and a fan 25a are surrounded by a heat insulating case 23 made of a heat insulating material such as styrofoam or urethane. It is mounted on the base 21 and has a structure including an electric motor 25b for blowing air. The blower device 25 includes a fan 25a and an electric motor 25b. DC low voltage (e.g. 12V) to AC commercial voltage (e.g. 1V)
The inverter 8 that boosts the voltage to 00V) has a signal section 8a that converts alternating current to direct current and an output section 8b that boosts the voltage.
It is separated into two parts and arranged on the inverted-shaped mounting plate 8C. The output part 8b is located on the corner stepped part 23a of the heat insulating case 26, and is mounted on the base 21 in a substantially U-shape when the radiator 60 is viewed from above so as to surround the compressor 22, the heat insulating case 26, and the inverter 8. The back plate 29 is formed in a U-shape so as to be connected to the free end of the radiator 60. The heat insulating case 26 is provided with a cold air discharge port 26 and a cold air suction port 27 for forcing the cold air heat-exchanged by the cooler 24 into the refrigerator box 2 through a blowing bag #25. The discharge port 26 and the suction 1] 27 protrude from the back plate 29. A cylindrical heat insulating member 29a is attached around the back plate 29 facing the R vertical I side of the discharge port 27. The upper part of the cooling unit 1 has a pusher 61 at the center of the upper surface, and the front flange part and the back face 727 of the cooling unit 1.
The second part is covered with a first plate 62 provided with market tools 32a, 321). The refrigerator box 2 is provided with ventilation holes 66 and 64 connected to the cold air discharge port 26 and the suction 1Δ port 27 of the cooling unit 1, respectively. cooling unit 1
When the cooling unit 1 is installed in the refrigerator box 2, the cylindrical portions of the cold air discharge port 26 and the suction port 27 of the cooling unit 1 fit into the ventilation holes 66 and 64 of the refrigerator box 2, and the area around the fitted portion is It has a structure that is sealed by compression of a cylindrical heat insulating member 29a provided on the face plate 29. Reference numeral 35.66 denotes a heat insulating cover, which can be used as a cover to prevent cold air from leaking from the ventilation holes 36, 34 of the refrigerator box 20 when the refrigerator box 2 cooled by the cooling unit 1 is used separated from the cooling unit 1. It is something that can be done. FIG. 5 shows a state in which one of the I@heating lids 35 is installed. During cooling during normal operation, the storage section 35a provided on the back plate 29
, 36a. 67 is a shoulder belt. FIG. 8 shows the power supply circuit of the on-vehicle refrigerator. 5 is an inverter circuit, for example, a DC type r? of an automobile. , (e.g. 12V), or terminal aX of a DC power supply (e.g. 24V) for a truck, bus, cruiser, etc.
The power supply voltage input from b is converted to AC commercial voltage (for example 1o
ov) and is configured to be connected to the refrigeration system surface 6 via a connection terminal 38. C1d is still a household AC commercial electrician (for example, 101JV)
It is a power supply terminal, and is configured to be connected to the refrigeration device 6 via the connection terminal 38. In such a configuration, the cooled air is transferred to the blower surface 25.
The fan 25a sends cold air into the refrigerator box 2 through the outlet 26 to cool the stored items. The cold air that has cooled the stored items returns to the cooler 24 through the cold air suction port 27 and is cooled. Since the cooling unit 1 is configured to forcefully circulate the cold air obtained by the refrigeration cycle, the cooling rate of the stored items in the refrigerator box 2 is faster than that of conventional natural convection, and the stored items are Temperature differences depending on location can also be reduced. In this case, only the fan 25b of the blower device 25 is housed in the heat insulating case 23 surrounding the cooler 24, and the blower electric motor 25a serving as the heat generating part is placed outside the heat insulating case 26, resulting in less heat intrusion and good efficiency. Also, in connection with the refrigerated box 2 that stores stored items, the cold air discharge port 26 and the suction port 27 of the cooling unit 1 are connected.
The cylindrical portion is fitted laterally into the ventilation holes 63 and 64 of the refrigerated box 2, and then locked with the clamp O, so the operability is extremely easy. In this case, the fitting part between the cooling unit 1 and the refrigerator box 2 is a heat insulating member 29.
Since it is sealed at point a, there is very little cold air leaking from this part. Furthermore, after cooling the stored items, even if the clamp 6 is unlocked and the cooling unit 1 is removed from the refrigeration unit 2, the cooler 24 will not be exposed, and there will be no fear of condensation. There is no risk of damage. Moreover, when carrying only the refrigerated box 2 separately from the cooling unit 1, a heat insulating cover 65 is inserted into the ventilation hole 36.64 of the refrigerated box 2.
．． By installing 66, you can prevent cold air leakage.
It also has excellent cold retention when the refrigerator box 2 is used alone. On the other hand, it converts the DC power supply terminals aX and b of automobiles etc. into AC commercial voltage via the inverter circuit 5 and supplies it to the commercial voltage refrigeration equipment B, and also serves as a power supply terminal for general household AC voltage. Since it can be easily operated by simply disconnecting and connecting the connecting terminals 68 from c and d, it is very user-friendly and can be used for both AC and DC operations. Since the above-mentioned refrigeration system B can be supplied with AC commercial voltage, it is possible to use a general specification one without having to manufacture a special specification compressor or blower motor. [Effects of the Invention] According to the present invention, the refrigerating box can be laterally removed from the cooling unit without lifting the cooling unit, so handling is extremely easy. Since cold air is forcibly circulated inside the refrigerator box, the cooling rate is significantly faster and temperature differences due to the temperature of stored items can be reduced. Furthermore, since the cooler is not exposed, there is no need to worry about leakage or damage to the joints. Moreover, it can be easily used with AC power source, direct power source, or power source, so it has the advantage that refrigeration equipment with AC commercial voltage specifications such as -''-II can be used for a long time. Brief Explanation Figure 1 is an IE view of a conventional in-vehicle refrigerator, Figure 2 is a perspective view of the cooling unit of the same refrigerator, and Figure 6 is a plan view of the same refrigerator when the lid of the refrigeration unit is removed. , Figures 4 to 8
The figures show one embodiment of the present invention, and FIG. 4 is a perspective view of the in-vehicle refrigerator of the present invention, FIG. 5 is a perspective view of the refrigerator when the cooling unit is separated, and FIG. Figure vi-v'
FIG. 7 is a sectional view taken along line i, FIG. 7 is a sectional view taken along vu-vIra in FIG. 4, and FIG. 8 is a diagram showing the electric circuit configuration of the refrigerator. 1... 1 unit of cold rice, 2... 1 cold box, 5
...Inverter circuit, 6... Refrigeration device, 25...
Blow layer surface, 26... cold air discharge port, 27... suction port,
8...Inverter, 1 Figure 1 Figure 7 J ¥-2 Figure 3 Figure 4 Figure $5 Prisoner #6 Circle 1.7 Confinement 8 Ro339-

Claims (1)

[Scope of Claims] 1. In a separate vehicle refrigerator comprising a combination of a refrigerated box (λ) for storing stored items and a cooling unit (1), on the base (21) of the cooling unit (1) A heat insulating case (±) containing a cooler (24) and a blower fan (25a) is placed on the holder, and the compressor (22) is used to sandwich the heat insulating case (23) and boost the DC power to AC power. The inverter (8) to be converted is placed, and the insulating case (2
3) Cold air discharge port (26) and cold air intake port (27) provided in
A back plate (29) on the side having the back plate (29), a compressor (22), and a heat insulating case (23) on the side opposite to the back plate (29).
, a U-shaped radiator (30) surrounding the inverter (8)
An on-vehicle refrigerator characterized in that a top plate (32) is provided at the top. 2. Install the blower motor (25b) on the top of the insulation case (23).
), place the fan (25a) and cooler (24) in order from above in the heat insulating case (23), and place the back plate (29).
A cold air outlet (
26) and a cold air inlet (27) at the bottom of the cooler (24).
2. The vehicle-mounted refrigerator according to claim 1, wherein the in-vehicle refrigerator has a structure that protrudes from the back plate (29). 3. The back plate (29) has a structure in which the heat insulating lids (35) and (36) are stored in the ventilation holes (33) and (34) of the refrigerated box (milk), which is separated from the cooling unit (top). An on-vehicle refrigerator according to claim 1, characterized in that: 4. A handle (31) is provided on the top plate of the cooling unit (1),
The on-vehicle refrigerator according to claim 1, characterized in that IL fittings (32a) and (32b) protruding outward from the refrigerator box (4) and the radiator (30) are provided.