JPH03247971A - Cold heat accumulating type refrigerating device - Google Patents

Abstract

PURPOSE:To enlarge a tilting angle and reduce the space of installation by a method wherein the central part of the rear wall surface of a cold heat keeping chamber is formed so as to be recessed and a battery and a refrigerant compressor are arranged at lower side while a refrigerant condenser and a fan for the condenser are arranged at the upper side without being projected from the rear wall surface of the cold heat keeping chamber respectively. CONSTITUTION:Respective instruments, constituting a refrigerating cycle 4, are mounted from the lowermost part of a cold heat keeping chamber 2 toward the uppermost part of the same in the sequence of a refrigerant compressor 25, a battery 8, a power supply box 10, a refrigerant condenser 5 and a fan 6 for the condenser so as not to be projected from the rear wall surface of the cold heat keeping chamber 2. Accordingly, the cold heat accumulating type refrigerating device 1 can operate a refrigerant cycle 4 under a condition that the rear wall surface of the cold heat keeping chamber 2 is contacted with a neighboring wall surface or another cold heat keeping chamber whereby the space of installation can be reduced in a distributing center and the like. On the other hand heavy matters or cold heat accumulating agent 3, the refrigerant compressor 25 and the battery 8 are arranged at the lower position of the cold heat keeping chamber 2 and, therefore, the tilting angle of the cold heat keeping chamber 2 can be increased.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a regenerator refrigeration system used for transporting and storing frozen and refrigerated foods.

[Prior Art] Conventionally, there is a regenerator type refrigeration device (Japanese Utility Model Publication No. 108077/1983) that can cool the inside of a refrigerator using a frozen regenerator as a cold heat source when the refrigerating cycle is not operated.

For example, as shown in FIG. 8, this regenerator refrigeration device
Refrigerant cycle refrigerant compressor 100, refrigerant condenser 101,
Generally, a condensing unit 103 such as a condenser fan 102 is installed at the top of the cold storage 104, and a cold storage agent 105 combined with a refrigerant evaporator of the refrigeration cycle is placed on the back side of the cold storage 104. It is true. However, in this case, since the heavy object (condensing unit 103) is installed on the top of the cold storage 104, the cold storage 104 may be damaged when it is loaded onto a truck or container for transportation or when the cold storage 104 is moved. Become more likely to fall. Therefore,
As shown in FIG. 9, the cold storage agent 200 is disposed at the bottom of the cold storage 201, and a recess is formed at the lower front side of the cold storage 201, and the condensing unit 200 is placed in the recess.
There is a regenerator type refrigeration system that increases the overturning angle by arranging 02.

[Problems to be Solved by the Invention] However, in the regenerator refrigeration system shown in FIG. It is necessary to provide a certain interval between them. As a result, there was a problem in that the installation space increased.

The present invention has been made based on the above-mentioned circumstances, and an object thereof is to provide a regenerator refrigeration device that has a large overturning angle and can reduce the installation space.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a cold storage box insulated from the outside, a refrigerant compressor that compresses and discharges the gaseous refrigerant sucked in, and a refrigerant compressor that discharges the refrigerant. a refrigeration cycle that includes a refrigerant condenser that condenses and liquefies the vapor-phase refrigerant that has been removed, and a refrigerant evaporator that evaporates the decompressed and expanded liquid-phase refrigerant; a condenser fan that blows air to the refrigerant condenser; and the refrigerant evaporator. The cool storage agent is provided in thermal contact with the refrigerant evaporator and is disposed at the bottom of the cold storage, and the cold storage agent cooled by the refrigeration cycle is blown into the cold storage. The refrigerator is equipped with an internal fan that sends cool air and a battery that is used as a power source for the internal fan, and the cold storage has a rear wall that is recessed in the center from the floor to the ceiling. As a technical means, the battery and the refrigerant compressor are arranged on the lower side of the recess, and the refrigerant condenser and the condenser fan are arranged on the upper side without protruding from the rear wall surface. do.

[Operations and Effects of the Invention] In the present invention having the above-mentioned configuration, the center of the rear wall of the cold storage box is formed with a concave depression, and the heavy batteries and the refrigerant compressor are disposed below the depression. has been done. A cold storage agent, which is also a heavy object, is placed at the bottom of the cold storage.

In this way, since the cold storage agent, the battery, and the refrigerant compressor, which are heavy in weight, are all disposed at the lower part of the cold storage, the overturning angle of the cold storage becomes large.

A battery and a refrigerant compressor are arranged on the lower side, and a refrigerant condenser and a condenser fan are arranged on the upper side in the recessed part of the cold storage, without protruding from the rear wall surface of the cold storage. Therefore, even if the rear wall of the refrigerator is used in close contact with an adjacent structure or other wall, when the condenser fan is operated, air will pass through the recess from the floor side to the ceiling side. can generate current. Therefore, the exhaust heat treatment of the refrigerant condenser can be performed well, and there is no need to provide a certain distance between the rear wall of the cold storage box and other walls.
Can be used in close contact.

As a result, the installation space for the device can be reduced.

[Example] Next, a regenerator refrigeration system of the present invention will be described based on an example shown in the drawings.

FIG. 1 is a perspective view of the regenerative refrigeration system seen from the rear side, and FIGS. 2 to 4 are side views and plan views of the regenerative refrigeration system.
and a front view.

The cold storage type refrigeration device 1 of this embodiment includes a cold storage 2 that is insulated from the outside, and a cold storage agent used as a cold heat source to cool the inside of the cold storage 2 (see FIGS. 2 to 4). 3,
A refrigeration cycle (see FIG. 7) 4 for cooling the cold storage agent 3, a condenser fan 6 for blowing air to the refrigerant condenser 5 of the refrigeration cycle 4, and an internal fan for sending cold air into the cold storage 2 (see FIG. 7). (See Figures 3 and 4) 7. A control circuit that controls the battery 8 that is used as a power source for the refrigerator fan 1 during transportation of the cold storage H2, and the energization of the condenser fan 6, refrigerator fan 7, etc. (See FIG. 6) It is composed of a power supply box 10 containing a power supply 9 and the like.

The cold storage box 2 stores frozen and refrigerated foods and is used, for example, for transportation from a distribution center to each store. Therefore,
Four casters 11 for moving the cold storage 2 are attached to the bottom of the cold storage 2. In addition, there are handles 12 at the center of both ends of the front and rear surfaces of the cold storage 2.
is provided.

A bumper 13 is appropriately attached to the outer surface of the cold storage 2 to prevent scratches during movement.

As shown in FIG. 4, a door 14 for loading and unloading items is provided on the front surface of the cold storage 2, and a handle 15 for opening and closing the door 14 is attached to the door 14. Note that the front surface of the cold storage 2 having the door 14 is reinforced to maintain the rigidity of the cold storage 2.

In addition, the control panel 1 is located at the top of the front of the refrigerator 2.
6 and a three-phase 200V power outlet 17 are provided.

As shown in FIG. 5, the control panel 16 is provided with an operation mode display section 18, an internal temperature selection section 19, and an internal temperature and failure display section 20.

The operation display unit 18 includes a refrigerator switch 18a that turns on and off the internal fan 7, and a refrigerator switch 18a that turns on and off the internal fan 7, and a
Each lit lamp 18 indicates that freezing has been completed and that the inside of the refrigerator is being cooled.
b, 18c, and 18d are provided.

Note that the lighting lamp 18d during cooling inside the refrigerator is linked to the refrigerator switch 18a, and lights up when the refrigerator switch 18a is turned on and disappears when it is turned off.

The temperature inside the refrigerator 19 is "5°C", "0°C" - 18°C"
Three temperatures can be selected, and lighting lamps 19a, 19b, and 19c are provided to indicate the respective temperature selections.

The refrigerator internal temperature and failure display unit 20 displays the refrigerator internal temperature on a liquid crystal display when the refrigerator interior is being cooled (when the refrigerator switch 18a is on), and also displays a message at the location where the failure has occurred when a failure occurs. Display the corresponding numbers.

The power outlet 17 also serves as an operation switch for the refrigeration cycle 4, and a plug (not shown) is connected to the power outlet 17.
The refrigeration cycle 4 is activated by plugging the plug into the power outlet 17, and the operation of the refrigeration cycle 4 is stopped by removing the plug from the power outlet 17.

Also, by inserting the plug into the power outlet 17,
Along with the operation of the refrigeration cycle 4, the charger 21 housed in the power supply box 10 as shown in the electrical circuit diagram of FIG.
The alternating current of 200 VAC is converted to 12 VDC, and the battery 8 is charged.

The cold storage 2 has a rear wall with a concave central part, and both sides of the recess are formed as cold air ducts 22 within the cold storage 2 (see Fig. 3). At the second most part of the duct 22, an internal fan 1 for generating an air flow in the cold air duct 22 and sending cold air into the cold storage 2 is disposed.

The rotation of this refrigerator fan 7 is controlled via a control circuit 9 according to the selected refrigerator temperature.

The cold storage agent 3 is combined in thermal contact with the refrigerant evaporator 23 of the refrigeration cycle 4, and together with the refrigerant evaporator 23,
It is arranged in a space partitioned by a partition plate 24 at the bottom of the cold storage 2. The space is communicated with the inside of the cold storage warehouse 2 via a cold air duct 22.

As shown in FIG. 7, the refrigeration cycle 4 includes a refrigerant compressor 2
5, is composed of a refrigerant condenser 5, a capillary tube 26, a refrigerant evaporator 23, an accumulator 27, etc.
Each of these functional parts has a well-known configuration in which they are connected in an annular manner by a refrigerant pipe 28. This refrigeration cycle 4 is provided with a high-pressure switch 29 between the refrigerant condenser 5 and the capillary tube 26 to prevent an adverse effect on each functional component due to abnormally high pressure within the cycle. Also,
A thermostat 30 for detecting freezing of the cold storage agent 3 is attached to the refrigerant evaporator 23 . Note that in the regenerator refrigeration system W1 of this embodiment, two sets of refrigeration cycles 4 are installed.

The refrigerant compressor 25 and refrigerant condenser 5 of the refrigeration cycle 4 are connected to a condenser fan 6, a battery 8, and a power supply box 10.
At the same time, the accumulator 27 is housed in the recessed portion of the cold storage 2 described above.

As shown in FIGS. 1 and 2, the refrigerant compressor 25, refrigerant condenser 5, condenser fan 6, battery 8, and power supply box 10 housed in the recessed part of the cold storage 2 are located in the uppermost part of the recessed part. In order from the bottom toward the most part, a refrigerant compressor 25, a battery 8, a power supply box 10, and a refrigerant condenser 5.
, and a condenser fan 6 are mounted without protruding from the rear wall surface of the cold storage box 2, respectively.

The recessed portion of the cold storage box 2 is closed by three panels 31, as shown in FIG.

Therefore, when the condenser fan 6 disposed at the top of the recessed portion is energized and rotated, the recessed portion becomes an air passage, and an air flow from below to above is generated through the recessed portion. As a result, the exhaust heat from the refrigerant condenser 5 will escape above the cold storage 2.

Note that an outside air suction port (not shown) is formed in the lower part of the refrigerant compressor 25, and the air filter 3 is connected to the suction port.
2 is installed.

Next, the operation of this embodiment will be briefly explained.

First, the refrigeration cycle 4 is operated at the distribution center to cool and freeze the cold storage agent 3 (to, for example, -25°C). At this time, the AC 200V is connected to D via the charger 21.
The voltage is converted to C12V and charged to the battery 8.

After the cold storage agent 3 is completely frozen, the cold storage 2 containing frozen/refrigerated foods, etc. is loaded onto a transport truck or container and delivered to each store. During transportation, the temperature inside the refrigerator is set and the refrigerator switch 18a is turned on. As a result, the internal fan 7 is activated, and cold air is sent into the cold storage 2 through the cold air duct 22, thereby cooling the inside of the cold storage 2. The temperature control inside the cold storage box 2 is controlled according to the selected set temperature.
This is done by controlling the internal fan 7 on and off via the control circuit 9.

In the above operation, when the refrigeration cycle 4 and condenser fan 6 are operated at the distribution center, the air sucked from the outside air intake port through the air filter is transferred to the cold storage box 2.
The refrigerant rises through the recessed part, undergoes heat exchange in the refrigerant condenser 5, and is discharged above the cold storage 2.

In this manner, by generating an air flow from below to upward through the recessed portion of the cold storage box 2, the exhaust heat of the refrigerant condenser 5 can be discharged to the upper side of the cold storage box 2.

Therefore, in the cold storage type refrigeration system 1 of this embodiment, the refrigeration cycle 4 can be operated with the rear wall of the cold storage 2 in close contact with the adjacent wall surface or other cold storage, so it can be used at a distribution center or the like. The installation space can be reduced.

Furthermore, since the cold storage agent 3, refrigerant compressor 25, and battery 8, which are heavy objects, are mounted at the lower part of the cold storage 2, the angle at which the cold storage 2 falls can be increased.

The front of the cold storage 2 is heavier than the other three walls because the box around the door is reinforced, but there are heavy objects such as the refrigerant compressor 25 and the battery 8 on the rear wall of the cold storage 2. Because of this arrangement, it is possible to maintain a good balance in the falling angle of the cold storage box 2 in the front-rear direction.

By arranging the internal fan 7 at the top of the cold air duct 22, when washing the inside of the cold storage 2 with water, the internal fan 7
Water exposure can be minimized.

Since the cold air duct 22 is formed symmetrically, there is little unevenness when the cold storage agent 3 is thawed, and the cold air inside the refrigerator is well balanced.

Since the exhaust heat of the refrigerant condenser 5 escapes to the upper part of the cold storage box 2, the exhaust heat does not hit surrounding people, and therefore, there is no possibility of causing discomfort.

[Brief explanation of drawings]

1 to 7 show an embodiment of the present invention,
Figure 1 is a perspective view of the regenerative refrigeration system, Figures 2 to 4 are side views, top views, and front views of the regenerative refrigeration system, Figure 5 is a plan view of the control panel, and Figure 6 is the electrical The circuit diagram, FIG. 7, is a refrigeration cycle diagram. Figures 8 and 9
The figure is a schematic diagram of a regenerator refrigeration system according to the prior art. In the figure 1... Cold storage type refrigeration device 3... Cold storage agent 5... Refrigerant condenser 1... Inside fan 23... Refrigerant evaporator\ 2... Cold storage 4... Refrigeration Cycle 6...Condenser fan 8...Battery 25...Refrigerant compressor

Claims (1)

[Scope of Claims] 1) (a) A cold storage box insulated from the outside; (b) A refrigerant compressor that compresses and discharges the gaseous refrigerant sucked in, and the gaseous refrigerant guided from the refrigerant compressor. a refrigeration cycle having a refrigerant condenser that condenses and liquefies and a refrigerant evaporator that evaporates the decompressed and expanded liquid phase refrigerant; (c) a condenser fan that blows air to the refrigerant condenser; (d) the refrigerant evaporator; (e) a cold storage agent provided in thermal contact with the refrigerant evaporator and disposed at the bottom of the cold storage; (e) blowing air to the cold storage agent cooled by the refrigeration cycle; (f) a battery used as a power source for the internal fan; The battery and the refrigerant compressor are disposed on the lower side of the concave portion, and the refrigerant condenser and the condenser fan are disposed on the upper side of the concave portion, respectively, without protruding from the rear wall surface. Features of cold storage type refrigeration equipment.