JP2002122373A - Cold reserving storage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the poser consumption to indispensable minimum and also to preserve the occurrence of freezing damage in cold storage mode, by adjusting the freezing state of cold accumulating material, according to cold reserving load. SOLUTION: In a cold reserving storage which is equipped with an cold accumulator 3 having within cold accumulating materials 5, 5, etc., for keeping the cold reserving chamber 2 within the main body 1 of a heat insulating structure of cold reserving storage cool, and a refrigerating device 4 to the cool and freeze the cold accumulating materials 5, 5, etc., of that cold accumulator 3, a quantity-of-cold-accumulation adjusting means which adjusts the freezing condition of the above cold accumulating materials 5, 5, etc., according to the cold reserving load generated in the above cold reserving chamber 2 is annexed, and the cold accumulating materials 5, 5, etc., of the cold accumulator 3 are frozen by the cold accumulating operation of the refrigerating device 4, and at transportation by truck, the freezing condition of the cold accumulating materials 5, 5, etc., is adjusted, according to the cold reserving load generated in the cold reserving chamber 2, when performing the cold reservation of cold-reserved objects stored within the cold reserving chamber 2 by the cold heat accumulated in those cold accumulating materials 5, 5, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cool box which is loaded on a truck or the like and transported.

[0002]

2. Description of the Related Art Generally, a cool box loaded on a truck or the like and transported is disposed above a cool box 2 in a cool box body 1 having a heat insulating structure as shown in FIG. Room 2
Storage material that keeps cold by natural convection air circulation
· The regenerator 3 with a built-in
And a refrigerating device 4 for cooling and freezing the water. A cooling pipe constituting an evaporator in the refrigerating device 4 is disposed in the regenerator 3 (not shown), and cools and freezes the regenerative materials 5, 5,. It is supposed to be. Reference numeral 6 denotes a compressor, 7 denotes a condenser, 8 denotes a condenser fan, 9 denotes a machine room containing the compressor 6, the condenser 7 and the condenser fan 8, etc., 10 and 11 denote an air inlet and an air outlet, Reference numeral 12 denotes a refrigerator temperature sensor for detecting the refrigerator temperature.

In the case of the cold storage having the above-mentioned structure, the refrigerating device 4 is operated in the storage warehouse of the delivery terminal to store the regenerator 3.
Of the cold storage materials 5, 5,... Are not operated during transportation, and the cold storage of the cold storage material stored in the cold storage room 2 by the cold stored in the cold storage materials 5, 5,. Are usually transported in a completely frozen state by the refrigerating operation of the refrigerating device 4 as shown in Table 1 below. In Table 1, Ti is the internal temperature, and Tr is the cold storage material temperature.

[0004]

[Table 1]

[0005]

By the way, even in the case of keeping cold items at the same temperature for the same period of time, a large amount of heat enters from outside in summer when the outside air temperature is high. Cold energy needs to be stored in the cold storage materials 5, 5,..., Whereas in the winter season when the outside air temperature is low, heat entering from the outside is reduced, so that less cold heat can be stored in the cold storage materials 5, 5,. Nevertheless, as described above, the cold storage material 5, 5,... Is completely frozen by the cold storage operation regardless of the summer or winter, so that excessive cold heat is stored in winter with little intrusion heat. As a result, there has been a problem that extra power is consumed (in other words, it is against energy saving).

Further, in winter or the like, the outside air temperature is low (for example, -5 ° C. or lower) and the inside of the refrigerator is in a refrigeration temperature range (for example,
In the case of about 5 ° C.), the intrusion heat flows out from the inside of the refrigerator to the outside, so that the temperature in the refrigerator becomes too low, and there is a problem that the refrigerated cold storage material causes freezing damage.

[0007] The present invention has been made in view of the above points, and by controlling the freezing state of the cold storage material according to the cooling load, power consumption is minimized and freezing damage in the refrigeration mode is reduced. The purpose is to prevent occurrence.

[0008]

According to the first aspect of the present invention, as means for solving the above-mentioned problems, cold storage materials 5, 5,... For keeping the cold storage chamber 2 in the cold storage main body 1 having a heat insulating structure built-in. In the cold storage provided with the regenerator 3 and the refrigerating device 4 for cooling and freezing the regenerators 5, 5,... Of the regenerator 3, the frozen state of the regenerators 5, 5,. A means for adjusting the amount of cold storage is provided.

With the above configuration, the cold storage materials 5, 5,... Of the regenerator 3 are frozen by the cold storage operation of the refrigerating device 4, and the cold storage materials 5, 5,.
The cold storage material stored in the cold storage room 2 is cooled by the cold heat stored in the cold storage room 2.・ ・ The freezing state of is adjusted. Accordingly, the refrigerating operation time of the refrigerating device 4 only needs to be a time during which a refrigerating amount corresponding to the refrigerating load can be obtained, and power consumption can be suppressed to a necessary minimum (in other words, energy saving can be achieved). Further, since the amount of cold storage corresponding to the cold storage load is obtained, even when the outside air temperature is lowered, the internal temperature does not become too low,
It is possible to prevent freezing damage of the refrigerated cold storage material.

[0010] As in the invention of claim 2, claim 1
In the cool storage box described above, the regenerator 3 is divided into a plurality of regenerative blocks 3A, 3B,... To which the cooling refrigerant in the refrigerating device 4 is supplied in parallel, and the regenerative amount adjusting means is connected to a refrigerating load. In the case of being constituted by a cold-holding load selecting means which is set by a manual operation in response thereto and a refrigerant closing means for controlling the flow of the cooling refrigerant to each of the cold-storage blocks 3A, 3B,... According to the setting state of the cold-holding load selecting means, Each of the cool storage blocks 3A, 3B,... In the cool storage unit 3 corresponds to the cool load selected and set by the cool load selecting means.
The flow of the cooling refrigerant to (1) is controlled by the refrigerant closing means (in other words, the flow is stopped). For example, when the cold storage load is large, the refrigerant flow control by the refrigerant closing means is not performed, and all the cold storage blocks 3
A, 3B,... Are frozen, while when the cooling load is small, the circulation of the refrigerant to the selected regenerator block is controlled (ie, stopped) by the refrigerant closing means, and only a part of the regenerator blocks in the regenerator 3 is cooled. It will be frozen. Therefore,
Only by controlling the refrigerant closing means in accordance with the cold storage load selected and set by the cold storage load selecting means, the amount of cold storage by the cold storage blocks 3A, 3B,... It is possible to prevent the occurrence of freezing damage of the refrigerated material. In addition, as the cooling load selection means, a means that can be intuitively set by the user in consideration of the cooling time, the amount of the cooling material, the outside air temperature, and the like (for example, a strong / medium / weak switch) may be employed. Alternatively, a switch in which the user can individually set the season and the cooling time (for example, two changeover switches of spring / summer / autumn / winter and 9 hours / 12 hours / 15 hours) may be employed.

[0011] As in the invention of claim 3, claim 1
In the cold storage box described above, the refrigerating device 4 is controlled by the cold storage load selecting means which is manually set according to the cold storage load and the setting state of the cold storage load selecting means.
And the compressor operation control means for controlling the operation state of the compressor 6 in (1), the operation state (for example, compression) of the compressor 6 in the refrigerating device 4 corresponding to the cooling load selected and set by the cooling load selection means. Thermo OFF of machine 6
Temperature or operation time) is controlled. For example, when the cold storage load is large, the thermo ON / OFF of the compressor 6 (for example, the state shown in Table 1) or the operation time of the compressor 6 is controlled so that all the cold storage materials can be completely frozen. Is smaller, the thermo-OFF temperature of the compressor 6 is changed to be slightly higher, or the operation time of the compressor 6 is changed to be slightly shorter, and only a part of the cold storage material in the regenerator 3 is frozen. Become. Therefore, it is possible to adjust the amount of cold storage in the regenerator 3 only by controlling the operation state of the compressor 6 in accordance with the cold storage load selected and set by the cold storage load selecting means, thereby achieving energy saving and refrigerated cold storage. Can be prevented from freezing damage. In addition, as the cooling load selection means, a means that can be intuitively set by the user in consideration of the cooling time, the amount of the cooling material, the outside air temperature, and the like (for example, a strong / medium / weak switch) may be employed. Alternatively, a switch in which the user can individually set the season and the cooling time (for example, two changeover switches of spring / summer / autumn / winter and 9 hours / 12 hours / 15 hours) may be employed.

As in the invention of claim 4, claim 1
In the cold storage described above, the regenerator 3 is divided into a plurality of regenerative blocks 3A, 3B,... To which the cooling refrigerant in the refrigerating device 4 is supplied in parallel, and the regenerator amount adjusting means is operated during the regenerative operation , And a refrigerant closure that controls the flow of the cooling refrigerant to each of the cold storage blocks 3A, 3B,... Based on the outside air temperature To detected by the outside air temperature detection means 23. , The outside air temperature detecting means 2
3. The magnitude of the cooling load is determined from the outside air temperature To detected by the control unit 3, and the flow of the cooling refrigerant to each of the cold storage blocks 3A, 3B,... In the regenerator 3 is controlled by the refrigerant closing means based on the magnitude of the cooling load. (In other words, distribution stop). For example, when it is determined that the outside air temperature To is high and the cooling load is large, the refrigerant circulation control by the refrigerant closing means is not performed, and all the cold storage blocks 3A, 3B,. When it is determined that To is low and the refrigerating load is small, the refrigerant flow to the selected regenerator block is controlled (ie, stopped) by the refrigerant closing unit, and only a part of the regenerator blocks in the regenerator 3 is frozen. It will be. Therefore, only by controlling the refrigerant closing means based on the outside air temperature To detected by the outside air temperature detecting means 23, the amount of cold storage by the cold storage blocks 3A, 3B,... Achievement and prevention of the occurrence of freezing damage of the refrigerated insulation can be achieved.

[0013] As in the invention of claim 5, claim 1
In the cold storage described in the above, the refrigerating amount adjusting means is controlled by the refrigerating apparatus 4 based on the outside air temperature detecting means 23 for detecting the outside air temperature To during the cold storage operation and the outside air temperature To detected by the outside air temperature detecting means 23. When the compressor 6 is constituted by compressor operation control means for controlling the operation state of the compressor 6, the magnitude of the cooling load is determined from the outside air temperature To detected by the outside air temperature detection means 23, and the refrigeration is performed based on the magnitude of the cooling load. The operation state of the compressor 6 in the device 4 (for example, the thermo-OFF temperature or the operation time of the compressor 6)
Is controlled. For example, when it is determined that the outside air temperature To is high and the cooling load is large, the thermo-ON / OFF of the compressor 6 (for example, the state shown in Table 1) so that all the cold storage materials 5, 5,. ) Or the operating time of the compressor 6 is controlled, while the outside air temperature To is low,
When it is determined that the cooling load is small, the thermo-OFF temperature of the compressor 6 is changed to a slightly higher temperature, or
The operation time is slightly shortened, and only a part of the regenerator material in the regenerator 3 is frozen. Therefore, the cold storage amount in the regenerator 3 can be adjusted only by controlling the operation state of the compressor 6 based on the outside air temperature To detected by the outside air temperature detecting means 23, achieving energy saving and refrigerated cold storage. Can be prevented from freezing damage.

As in the invention of claim 6, claim 1
In the cool storage box described above, the regenerator 3 is divided into a plurality of regenerative blocks 3A, 3B,... To which a cooling refrigerant in the refrigerating device 4 is supplied in parallel, and the regenerator amount adjusting means is provided during transportation. Based on the outside air temperature storage means for storing the outside air temperature To and the outside air temperature storage value To (m) stored by the outside air temperature storage means, the flow of the cooling refrigerant to each of the cold storage blocks 3A, 3B,. When configured by the controlled refrigerant closing means, the magnitude of the cold storage load is determined from the outside air temperature storage value To (m) stored by the outside air temperature storage means, and each cold storage in the regenerator 3 is determined based on the magnitude of the cold storage load. The flow of the cooling refrigerant to the blocks 3A, 3B,... Is controlled by the refrigerant closing means (in other words, the flow is stopped). For example, the stored outside air temperature T
When it is determined that o (m) is high and the cooling load is large, the refrigerant closing control is not performed by the refrigerant closing means, and all the cold storage blocks 3A, 3B,... in the cold storage 3 are frozen, while the outside air temperature is stored. When it is determined that the value To (m) is low and the cooling load is small, the flow of the refrigerant to the selected cold storage block is controlled by the refrigerant closing means (that is, stopped).
As a result, only some of the cold storage blocks in the cold storage device 3 are frozen. Therefore, it is possible to adjust the amount of cold storage by the cold storage blocks 3A, 3B,... In the cool storage unit 3 only by controlling the refrigerant closing means based on the stored outside air temperature value To (m) stored by the outside air temperature stored value means. As a result, it is possible to achieve energy saving and prevent freezing damage of the refrigerated cold storage material.

As in the invention of claim 7, claim 1
In the cool storage box described above, the cool storage amount adjusting means is configured to store the outside air temperature To during transportation based on an outside air temperature storage means and an outside air temperature storage value To (m) stored by the outside air temperature storage means. Compressor 6 in refrigeration system 4
And the compressor operation control means for controlling the operation state of the air conditioner, the magnitude of the cooling load is determined from the outside temperature storage value To (m) stored by the outside temperature storage means, and based on the magnitude of the cooling load. The operating state of the compressor 6 in the refrigeration apparatus 4 (for example, the thermo-OFF temperature or the operating time of the compressor 6) is controlled. For example, when the stored outside air temperature value To (m) is determined to be high and the cooling load is determined to be large, the thermo-ON / OFF of the compressor 6 (for example, the thermo-on / off operation so that all the cold storage materials 5, 5,... Table 1
) Or the operation time of the compressor 6 is controlled. On the other hand, when it is determined that the stored outside air temperature value To (m) is low and the cooling load is small, the thermo OFF temperature of the compressor 6 is changed to a slightly higher temperature. Alternatively, the operation time of the compressor 6 is changed to be slightly shorter, and only a part of the regenerator material in the regenerator 3 is frozen. Therefore, it is possible to adjust the amount of cold storage in the regenerator 3 only by controlling the operating state of the compressor based on the outside air temperature storage value To (m) stored by the outside air temperature storage means, thereby achieving energy saving. It is possible to prevent the occurrence of freezing damage of the refrigerated material.

As in the invention of claim 8, claim 1
In the cold storage described above, the regenerator 3 is divided into a plurality of regenerative blocks 3A, 3B,... To which the cooling refrigerant in the refrigerating device 4 is supplied in parallel, and an internal clock 24 With a built-in
The cool storage amount adjusting means is configured to control the cool storage blocks 3A, 3B,. When configured by a refrigerant closing means that controls the flow of the cooling refrigerant to the
The magnitude of the cooling load is determined from the outside air temperature estimation value estimated by the outside air temperature estimating means from the date and time of the internal clock 24, and based on the magnitude of the cooling load, each of the cold storage blocks 3A, 3B,. The circulation of the cooling refrigerant to the cooling medium is controlled by the refrigerant closing means (in other words, the circulation is stopped). For example, it is estimated that summer is from the internal clock 24,
When the outside air temperature estimation value is high and it is determined that the cooling load is large, the refrigerant flow control by the refrigerant closing means is not performed,
All the cold storage blocks 3A, 3B,... In the cool storage unit 3 are frozen, while the internal clock 24 estimates that the winter is in progress, the estimated outside air temperature is low, and the cold storage load is determined to be small. The flow of the refrigerant to the regenerator 3 is controlled (that is, stopped) by the refrigerant closing means, and only a part of the regenerator blocks in the regenerator 3 is frozen. Therefore, the cold storage blocks 3A, 3B,... In the regenerator 3 are controlled only by controlling the refrigerant closing means based on the estimated outside air temperature from the internal clock 24 by the outside air temperature estimation means.
, The amount of cold storage can be adjusted, thereby achieving energy saving and preventing freezing damage of the refrigerated cold storage material.

As in the ninth aspect of the present invention, the first aspect
In the refrigerator, an internal clock 24 is built in the controller 21 of the refrigerating apparatus 4, and the cool storage amount adjusting means is provided with an external air temperature estimating means for estimating an external air temperature during transportation by the internal clock 24, and the external air temperature. When configured by compressor operation control means for controlling the operation state of the compressor 6 in the refrigerating apparatus 4 based on the outside air temperature estimated value estimated by the estimation means, the outside air temperature is estimated from the date and time of the internal clock 24. The magnitude of the cooling load is determined from the estimated outside air temperature estimated by the means, and based on the magnitude of the cooling load, the operating state of the compressor 6 in the refrigeration system 4 (for example, the thermo-OFF temperature or operating time of the compressor 6). Is controlled. For example, when summer time is estimated from the internal clock, the estimated outside air temperature is high, and it is determined that the cooling load is large, the thermo ON / OFF of the compressor 6 is set so that all the cold storage materials 5, 5,. OFF (for example, the state shown in Table 1) or the operation time of the compressor 6 is controlled. On the other hand, when it is determined from the internal clock that winter is in progress, the estimated outside air temperature is low, and the cooling load is small, the compressor 6 Is slightly changed, or the operation time of the compressor 6 is changed to be slightly shorter, so that only a part of the cold storage material in the cool storage unit 3 is frozen.
Therefore, the amount of cold storage in the regenerator 3 can be adjusted only by controlling the operating state of the compressor 6 based on the outside air temperature estimation value estimated by the outside air temperature estimation means from the date and time of the internal clock 24. As a result, it is possible to achieve energy saving and prevent freezing damage of the refrigerated cold storage material.

According to the tenth or eleventh aspect of the present invention, in the cold storage according to any one of the second, fourth, sixth and eighth aspects, the flow of the refrigerant supplied to each of the cold storage blocks 3A, 3B,. If the resistances are different from each other,
Alternatively, in the cool storage box according to any one of claims 3, 5, 7, and 9, the regenerator 3 is provided with a plurality of regenerative blocks 3A, 3B,. When the flow resistance of the refrigerant supplied to each of the cold storage blocks 3A, 3B,... Is made different from each other, the refrigerant flows most easily in the cold storage block where the flow resistance of the supplied refrigerant is the smallest. In the cold storage block where the flow resistance of the supplied refrigerant is the highest, the refrigerant becomes the least difficult to flow, and even if the cold storage block where the flow resistance of the supplied refrigerant is sufficiently frozen, the cold storage block where the flow resistance of the supplied refrigerant is the highest. Blocks can create conditions that are not sufficiently frozen. Further, the temperature of the cold storage materials 5, 5,... Is lowest in the cold storage block in which the flow resistance of the supplied refrigerant is the smallest, is highest in the cold storage block in which the flow resistance of the supplied refrigerant is the largest, and the temperature of the supplied refrigerant. As compared with the case where the flow resistance of the cold storage material is uniform, the difference in the temperature of the cold storage material in each cold storage block becomes larger. If the temperature is detected by the material temperature sensor, the temperature of the cold storage material in another cold storage block can be easily estimated, and the freezing state of the cold storage material can be easily adjusted. Therefore, it is easy to adjust the frozen state of the cold storage material and to detect the temperature of the cold storage material, and it is possible to easily realize the frozen state of the cold storage material optimal for the cold storage load.

As in the twelfth or thirteenth aspect of the present invention, in the cold storage according to any one of the second, fourth, sixth and eighth aspects, each of the cold storage blocks 3A and 3B is provided.
10. When the amounts of the cold storage materials 5, 5,... Are different from each other, or in the cool storage box according to any one of claims 3, 5, 7, and 9, the regenerator 3 is connected to the refrigerating device. 4 is divided into a plurality of cold storage blocks 3A, 3B,... To be supplied in parallel, and the amount of the cold storage material in each of the cold storage blocks is made different from each other. Even if you drive,
The cold storage block with the least amount of cold storage material freezes sufficiently, but the cold storage block with the largest amount of cold storage material does not freeze sufficiently. Furthermore, the temperature of the cold storage material is also the lowest in the cold storage block with the least amount of cold storage material,
Since the difference in the temperature of the cold storage material in each of the cold storage blocks is larger than that in the case where the amount of the cold storage material is the highest and the amount of the cold storage material is uniform, a certain cold storage block (for example, If the temperature of the cold storage material in the most cold storage block is detected by the cold storage material temperature sensor, the temperature of the cold storage material in other cold storage blocks can be easily estimated, and the freezing state of the cold storage material can be easily adjusted. Therefore, it is easy to adjust the frozen state of the cold storage material and to detect the temperature of the cold storage material, and it is possible to easily realize the frozen state of the cold storage material optimal for the cold storage load.

As in the invention of claim 14, claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 1
In refrigerator of any one of claims 2 and 13, the cold accumulating material temperature detection for detecting the cold accumulating material temperature Tr _1, Tr ₂ · · at a plurality of positions toward the upstream side from the downstream side of the cooling pipe 25 in the regenerator 3 means 19A, annexed to 19B · ·, and to perform operation control of the refrigeration apparatus 4 based on the cold storage material temperature Tr _1, Tr ₂ ·· sensed cold accumulation material temperature detecting means 19A, the 19B · · In case, cold storage material 5,
Are frozen in order from the one located upstream of the cooling pipe 25 in the regenerator 3, so that the cold storage material temperature Tr at a plurality of positions from the downstream side to the upstream side of the cooling pipe 25
By detecting ₁ , Tr ₂ ..., It is possible to know how much of the cold storage materials 5, 5,. For example, from the downstream to the upstream of the regenerators 5, 5,..., Three of them are arranged at a position of about 1/4, about 1/2, and about 3/4 of the distance from the inlet of the regenerator 3. if cold storage material temperature Tr ₂ of the second from the upstream long as drops below freezing point, can be inferred that about half the cold accumulating material 5,5 ... is frozen. Therefore, a plurality of cold storage material temperatures Tr
By detecting ₁ , Tr ₂ .., it is possible to easily detect the frozen state, and the cold storage material 5, 5,.
・ The frozen state can be easily realized.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

First Embodiment FIGS. 1 and 2 show a cold storage and a refrigerant system diagram in the cold storage according to a first embodiment of the present invention.

This cool box has the same structure as that described in the section of the prior art. As shown in FIG. 1, it is arranged above the cool box 2 in the cool box body 1 having a heat insulating structure. hand,
The regenerator 3 includes regenerators 5, 5,... For keeping the refrigerating room 2 cool by a natural convection air circulation system, and a refrigerating device 4, which cools and freezes the regenerators 5, 5,. It is configured. A cooling pipe constituting an evaporator in the refrigerating device 4 is provided in the regenerator 3 (not shown), and is operated by the refrigerating device 4.
5 is to be cooled and frozen. 6 is a compressor, 7 is a condenser, 8 is a condenser fan, 9 is a compressor 6,
A machine room containing a condenser 7 and a condenser fan 8 etc.
Reference numerals 10 and 11 denote an air inlet and an air outlet, and 12 denotes an internal temperature sensor for detecting the internal temperature.

As shown in FIG. 2, the refrigerating device 4 is configured by sequentially connecting a compressor 6, a condenser 7, and a regenerator 3 via a refrigerant pipe.
It is divided into three first, second and third regenerative blocks 3A and 3B to which the cooling refrigerant from the condenser 7 is supplied in parallel, and the inlet side of the first regenerative block 3A is Capillary tube 13A for increasing the flow resistance of the cooling refrigerant to first cold storage block 3A is provided, while refrigerant closing means for controlling the flow of the cooling refrigerant to second cold storage block 3B and third cold storage block 3C is provided. Working electromagnetic on-off valves 14B and 14C are provided. Here, the capillary tube 13A has a flow resistance from the flow divider 15 to the inlet of the first cold storage block 3A, and the electromagnetic on-off valves 14B, 14C from the flow divider 15 to the inlets of the second and third cold storage blocks 3B, 3C. Are selected so as to be larger than the distribution resistance including each of them. In other words, the refrigerant circulation amount when operating with both of the electromagnetic on-off valves 14B and 14C opened is the smallest in the first regenerative block 3A,
It is about the same as the second and third cold storage blocks 3B and 3C. In addition, each cold storage block 3A, 3B, 3
In C, the amount of the cold storage material and the use of the cooling pipe are assumed to be uniform.

The outlet side of the condenser 7 and the intermediate port of the compressor 6 are connected via an injection circuit 16. The injection circuit 16 performs liquid injection to the compressor 6, and includes an injection capillary 17 and an injection solenoid valve 18. Reference numeral 19 denotes a cold storage material temperature sensor for detecting the temperature Tr of the cold storage material, and reference numeral 20 denotes an expansion valve.

In the refrigerating apparatus 4 having the above-described structure, the operation of the compressor 6, the solenoid on-off valves 14B and 14C, the condenser fan 8, and the injection solenoid valve 18 is controlled by a control signal from the controller 21.

The controller 21 includes an internal temperature sensor 12, a cold storage material temperature sensor 20, and two rotary switches 22A acting as cold-holding load selecting means.
The signal from 22B is to be input. The rotary switches 22A and 22B are set by manual operation according to the cooling load. One of the rotary switches 22A is sensibly selected from the influence of the outside air temperature and switched to "strong / medium / weak". The operation is performed, and the other rotary switch 22B is used to select the cooling time, and is switched to “9 hours / 12 hours / 15 hours”.

In this embodiment, the signals from the two rotary switches 22A and 22B are input to the controller 21. In the controller 21, the states of the rotary switches 22A and 22B are shown in Table 2 below.
As shown in (1), it is to be replaced by the index L of the cooling load. In addition, the replacement of the index in Table 2 is
It is the same for refrigeration.

[0029]

[Table 2]

During the cold storage operation, the electromagnetic switching valves 14B and 14C are connected to the rotary switch 22.
Table 3 below shows an index L obtained by replacing the states of A and 22B.
The opening and closing operation is performed as shown in FIG.

[0031]

[Table 3]

That is, when it is determined that the cooling load is large, the solenoid on-off valves 14B and 14C are opened (in other words, the refrigerant flow control by the refrigerant closing means is not performed), and all of the refrigerant in the regenerator 3 is opened. Cool storage block 3A, 3
When the refrigerant for cooling is supplied to B and 3C and all the cold storage blocks 3A, 3B and 3C are frozen and it is determined that the cooling load is small, the electromagnetic on-off valves 14B and 14C are closed (in other words, they are closed). , The refrigerant circulation to the selected regenerator block 3B, 3C is stopped by the refrigerant closing means), and the regenerator 3
When the cooling refrigerant is supplied only to some of the cold storage blocks 3A and only the cold storage blocks 3A are frozen and the cooling load is determined to be medium, the electromagnetic on-off valve 14C is closed (in other words, , The refrigerant circulation to the selected regenerator block 3C is stopped by the refrigerant closing means), and the regenerator 3
The cooling refrigerant is supplied to the cold storage blocks 3A, 3B in the above, and the cold storage blocks 3A, 3B are frozen.

Therefore, in the present embodiment, the cold storage amount adjusting means for adjusting the freezing state of the cold storage material in the cold storage unit 3 according to the cold storage load includes a cold storage load selecting means (for example, rotary switches 22A and 22B) and a refrigerant. The cooling means is constituted by closing means (for example, electromagnetic on-off valves 14B, 14C), and corresponds to the cooling load selected and set by the cooling load selecting means (for example, rotary switches 22A, 22B). (For example, only by controlling the electromagnetic on-off valves 14B, 14C), the amount of cold storage by the cold storage blocks 3A, 3B, 3C in the cool storage unit 3 can be adjusted, thereby achieving energy saving and preventing freezing damage of the cold storage material. Can be achieved. In addition, as the cold-holding load selecting means, in addition to the above, one that can be set by the user instinctively in consideration of the amount of the cold-holding material or the like, or one in which the user can individually set the season and the cold-holding time may be used. May be adopted.

By the way, the cold storage operation by the operation of the refrigeration system 4 is performed by controlling the operation of the compressor 6 as shown in Table 1 above.
The regenerator material temperature sensor 19 detects the regenerator material temperature Tr in the vicinity of the most downstream of the first regenerator block 3A having the least amount of refrigerant circulation. 19 is the freezing temperature of the cold storage material (that is, −6 ° C. in the case of the cold storage material for refrigeration,
If the temperature is lower than -35 ° C. for the refrigerating material for freezing (in other words, if the first regenerative block 3A is sufficiently frozen), the electromagnetic on-off valves 14B and 14C provided upstream are opened. The other cold storage blocks 3B and 3C in the state can be frozen reliably.

Second Embodiment FIG. 3 shows a refrigerant system diagram of a cool box according to a second embodiment of the present invention.

In this case, capillary tubes 13B and 13C are interposed downstream of the electromagnetic on-off valves 14B and 14C, respectively. Here, the capillary tube 13
If the flow resistances of A, 13B, and 13C are Ra, Rb, and Rc, then Ra>Rb> Rc. The flow resistance may be adjusted by changing the length of the branch pipe, or may be adjusted by the length of the cooling pipe.

With this configuration, the solenoid on-off valve 13
When B and 13C are in the valve open state, the cold storage block 3
The amounts of the cooling refrigerant supplied to A, 3B, and 3C are different from each other. Therefore, the refrigerant flows most easily in the third cold storage block 3C where the flow resistance of the supplied refrigerant is the smallest, and the refrigerant hardly flows in the first cold storage block 3A where the flow resistance of the supplied refrigerant is the largest and is supplied. Even if the third cold storage block 3C with the smallest flow resistance of the refrigerant is sufficiently frozen, the first cold storage block 3A with the largest flow resistance of the supplied refrigerant can be in a state where it is not sufficiently frozen. Further, the temperature of the cold storage material is also lowest in the third cold storage block 3C where the flow resistance of the supplied refrigerant is the smallest, and is highest in the first cold storage block 3A where the flow resistance of the supplied refrigerant is the largest. Since the difference in the temperature of the cold storage material in each of the cold storage blocks 3A, 3B, 3C is larger than in the case where the flow resistance of the refrigerant is uniform, a certain cold storage block (for example, the first cold storage block having the largest flow resistance of the supplied refrigerant). If the temperature of the cold storage material in 3A) is detected by the cold storage material temperature sensor 19,
The temperature of the cold storage material in the other cold storage blocks 3B and 3C can be easily estimated, and the freezing state of the cold storage material can be easily adjusted. Therefore, it is easy to adjust the frozen state of the cold storage material and to detect the temperature of the cold storage material, and it is possible to easily realize the frozen state of the cold storage material optimal for the cold storage load.

The other configuration, operation, and effect are the same as those in the first embodiment, and the description is omitted.

Third Embodiment FIG. 4 shows a refrigerant system diagram of a cool box according to a third embodiment of the present invention.

In this case, the amounts of the cold storage materials in the first, second and third cold storage blocks 3A, 3B, 3C are different from each other. That is, if the amounts of the cold storage material of the first, second and third cold storage blocks 3A, 3B, 3C are Wa, Wb, Wc, then Wa>Wb> Wc. In this case, the capillary tubes 13A, 13B, 13C are not provided.

With this configuration, the solenoid on-off valve 13
Even if the refrigerating apparatus 4 is operated in the cold storage for a certain period of time with the valves B and 13C opened, the third cold storage material having the smallest amount of the cold storage material is used.
A phenomenon occurs in which the cold storage block 3C is sufficiently frozen, but the first cold storage block 3A having the largest amount of cold storage material is not sufficiently frozen. Further, the temperature of the cold storage material is also the lowest in the third cold storage block 3C having the smallest amount of cold storage material, and the highest in the first cold storage block 3A having the largest amount of cold storage material. In comparison, each cold storage block 3
Since the difference between the cold storage material temperatures in A, 3B, and 3C becomes large, if the temperature of the cold storage material in a certain cold storage block (for example, the first cold storage block 3A having the largest amount of cold storage material) is detected by the cold storage material temperature sensor 19, , Other cold storage block 3
The temperature of the cold storage material at B and 3C can be easily estimated, and the freezing state of the cold storage material can be easily adjusted. Therefore,
Adjustment of the frozen state of the cold storage material and detection of the temperature of the cold storage material become easy, and the frozen state of the cold storage material optimal for the cold storage load can be easily realized.

The other constructions and functions and effects are the same as those in the first embodiment, and the description is omitted.

Fourth Embodiment FIG. 5 shows a refrigerant system diagram of a cool box according to a fourth embodiment of the present invention.

In this case, the refrigeration system 4 is provided with an outside air temperature sensor 23 which functions as an outside air temperature detecting means for detecting the outside air temperature To during the cold storage operation. The outside air temperature detected by the outside air temperature sensor 23 is provided. To is input to the controller 21, and the opening and closing of the electromagnetic on-off valves 14B and 14C is controlled by a control signal from the controller 21. For example, as shown in Table 4 below, the electromagnetic on-off valve 14
B and 14C are controlled to open and close. That is, in the present embodiment, the outside air temperature sensor 2 serving as the outside air temperature detecting means is used.
3 and the solenoid on-off valves 14B and 14C as the refrigerant closing means constitute the cold storage amount adjusting means. In this case, the cold storage operation is performed outdoors. Note that the rotary switches 22A and 22B are not provided.

[0045]

[Table 4]

That is, the magnitude of the cooling load is determined from the outside air temperature To detected by the outside air temperature sensor 23, and the cooling refrigerant to each of the cold storage blocks 3A, 3B, 3C in the regenerator 3 is determined based on the magnitude of the cooling load. Is controlled by the opening and closing of the electromagnetic on-off valves 14B and 14C (in other words, the flow is controlled by the refrigerant closing means). For example, when it is determined that the outside air temperature To is high (that is, To ≧ 28 ° C.) and the cooling load is large, the electromagnetic switching valve 14
B and 14C are opened (in other words, the refrigerant flow is not controlled by the refrigerant closing means), and the cooling refrigerant is supplied to all the cold storage blocks 3A, 3B and 3C in the cool storage unit 3 and all the cold storage When the blocks 3A, 3B, and 3C are frozen, the outside air temperature To is low (that is, To <5 ° C.), and it is determined that the cooling load is small, the electromagnetic on-off valves 14B and 1C are determined.
4C is closed (in other words, the flow of the refrigerant to the selected regenerator block 3B, 3C is stopped by the refrigerant closing means), and the cooling refrigerant is supplied only to a part of the regenerator block 3A in the regenerator 3. Then, only the cold storage block 3A is frozen, and the outside air temperature To is not so high (that is, 5 ° C ≦
To <28 ° C.), when it is determined that the refrigerating load is moderate, only the solenoid on-off valve 14B is opened (in other words, the refrigerant circulation to the selected regenerative block 3C is stopped by the refrigerant closing means. ), The cooling refrigerant is supplied to some of the cold storage blocks 3A, 3B in the cool storage unit 3, and the cold storage blocks 3A, 3B are frozen. Therefore, only by opening and closing the electromagnetic on-off valves 14B and 14C based on the outside air temperature To detected by the outside air temperature sensor 23,
The amount of cold storage by the cold storage blocks 3A, 3B, 3C in the cool storage unit 3 can be adjusted, so that energy saving and prevention of freezing damage of the cold storage material can be achieved.

Incidentally, the cold storage operation may be performed outdoors, but in many cases, it is performed at an indoor luggage collection place. In this case, even if the baggage collection area is cooled or heated, the temperature outside the cool box is generally relatively high in the summer and the temperature outside the cool box is relatively low in the winter, so the appropriate set temperature is selected. By doing so, it can be determined whether it is summer, winter, or an interim period.

The other configuration, operation, and effect are the same as those in the first embodiment, and the description is omitted.

In this embodiment, as in the second and third embodiments, the cold storage block 3 is used.
The flow resistance of the refrigerant supplied to A, 3B, 3C may be different from each other, or the amount of the cold storage material in the cold storage blocks 3A, 3B, 3C may be different from each other.

Fifth Embodiment In this case, the refrigerant system diagram of the refrigeration system 4 is the same as that of the fourth embodiment, but the outside air temperature sensor 23 during transportation (in other words, during the cool-keeping operation). The average value of the outside air temperature is determined based on the temperature information from the controller, and the average value is stored in the controller 21 as the outside air temperature storage value To (m).

A method of obtaining the stored outside air temperature value To (m) will be described with reference to a flowchart shown in FIG.

First, a flag for determining whether or not the cold storage operation has been performed (that is, the cold storage flag F) is generated as follows.

That is, when the AC power supply is connected to the refrigeration apparatus 4 for 3 hours or more, it is determined that the cold storage operation has been performed and F = 1.
When the AC power connection to the refrigeration apparatus 4 is interrupted for 8 hours or more, it is determined that the cooling operation has been completed and F = 0.

Next, in step S1, the refrigeration system 4
Is determined to be turned off (that is, the cold storage operation is not performed), and it is determined that the cold storage flag F = 1 in step S2 (in other words, the cold storage operation is performed). If it is determined that cooling has been started in step S3, a 3-hour timer is set in step S3, and in step S4, each constant (ie, the number of measurements N, the integrated value To (s) of the outside air temperature measurement value, the outside air temperature average) is set. The external temperature storage value To (m) given as a value is reset, and the apparatus enters a measurement standby mode.

If it is determined in step S5 that the three-hour timer has counted up (ie, three hours have elapsed) from the measurement standby mode, the outside air temperature sensor 23 measures the outside air temperature To in step S6. In S7, an outside air temperature average value To (m) is calculated.

The calculation of the outside air temperature average value To (m) is as follows.
The number of measurements is N = N + 1, To (s) = To (s) + T
o, To (m) = To (s) / N. That is, it is obtained by decreasing the integrated value To (m) of the outside air temperature by the number of times of measurement N.

When the calculation of the outside air temperature average value To (m) is completed, the 30-minute timer is set in step S8, and the process returns to the measurement standby mode. In step S9, the 30-minute timer counts up (ie, 30 minutes have elapsed). ), It is determined in step S10 whether or not the cold storage flag F = 0 (in other words, whether or not the cold storage operation has been completed). If a negative determination is made here, , The number of measurements N in step S12
Is determined to be 11 times or more. If a negative determination is made here, the process returns to step S6 and the measurement of the outside air temperature To is repeated.

On the other hand, step S11 or step S11
If an affirmative determination is made in step 12, step S13
, The constants (that is, the number of measurements N, the integrated value To (s) of the measured outside air temperature, and the stored outside air temperature To (m) given as the outside air temperature average value) are stored, and then the control ends. That is, the stored outside air temperature value To (m) is stored in the controller 21.

In this embodiment, the electromagnetic on-off valves 14B and 14C are controlled to open and close by a control signal from the controller 21 output based on the stored outside air temperature value To (m) obtained as described above. It is supposed to be.
For example, as shown in Table 5 below, the electromagnetic on-off valves 14B and 14C are made to correspond to changes in the outside air temperature stored value To (m).
Is controlled to open and close. That is, in the present embodiment,
The outside air temperature storage means (that is, the outside air temperature sensor 23 and the controller 21) and the solenoid on-off valve 1 as the refrigerant closing means
4B and 14C constitute the cold storage amount adjusting means. The rotary switches 22A, 22A
B is not provided.

[0060]

[Table 5]

That is, the magnitude of the cooling load is determined from the stored outside air temperature value To (m) stored in the controller 21,
Based on the magnitude of the cold storage load, the flow of the cooling refrigerant to each of the cold storage blocks 3A, 3B, 3C in the cool storage unit 3 is controlled to open and close the electromagnetic switching valves 14B, 14C (in other words, to control the flow by the refrigerant closing means). It is supposed to be. For example, the stored outside air temperature value To (m) is high (that is,
To (m) ≧ 28 ° C.), when it is determined that the cooling load is large, the solenoid on-off valves 14B and 14C are opened (in other words, the refrigerant flow control by the refrigerant closing means is not performed), and the regenerator 3 all the cold storage blocks 3A, 3
Cooling refrigerant is supplied to B and 3C, all the cold storage blocks 3A, 3B and 3C are frozen, and the stored outside air temperature value To
(M) is low (that is, To (m) <5 ° C.) and when it is determined that the cooling load is small, the solenoid on-off valves 14B and 14C
Is closed (in other words, the refrigerant circulation to the selected regenerator block 3B, 3C is stopped by the refrigerant closing means), and the cooling refrigerant is supplied only to a part of the regenerator block 3A in the regenerator 3. When only the cold storage block 3A is frozen and the stored outside air temperature value To (m) is not so high (that is, 5 ° C. ≦ To (m) <28 ° C.) and the cold insulation load is determined to be medium, the electromagnetic switching is performed. Only the valve 14B is opened (in other words, the circulation of the refrigerant to the selected regenerator block 3C is stopped by the refrigerant closing means), and the cooling refrigerant is supplied to some regenerator blocks 3A and 3B in the regenerator 3. The supplied cold storage blocks 3A and 3B are frozen. Therefore, the cold storage blocks 3A, 3A in the cold storage unit 3 can be operated only by controlling the opening and closing of the solenoid on-off valves 14B, 14C based on the outside air temperature To detected by the outside air temperature sensor 23.
The amount of cold storage by 3B and 3C can be adjusted, so that energy saving and prevention of freezing damage of refrigerated products can be achieved.

By the way, the cold storage operation may be performed outdoors, but in many cases, it is performed at an indoor luggage collection place. In this case, if the luggage collection area is cooled or heated, it may be difficult to determine whether it is summer, winter, or an interim period by detecting the outside air temperature during the cold storage operation. As in the above, the outside air temperature during transportation (in other words, during the cooling operation) is measured, and the average value is stored as the outside air temperature storage value To (m),
Based on the stored outside air temperature To (m), the solenoid on-off valve 1
By performing the opening / closing control of 4B and 14C, it is possible to perform the cold storage amount adjustment corresponding to the proper cold storage load without judging the season.

The other structure, operation, and effect are the same as those in the first embodiment, and the description is omitted.

In this embodiment, as in the second and third embodiments, the cold storage block 3 is also used.
The flow resistance of the refrigerant supplied to A, 3B, 3C may be different from each other, or the amount of the cold storage material in the cold storage blocks 3A, 3B, 3C may be different from each other.

Sixth Embodiment FIG. 7 shows a refrigerant system diagram of a cool box according to a sixth embodiment of the present invention.

In this case, the controller 21 has a built-in internal clock 24, and the internal clock 24 displays the date and time (in other words, has a calendar function). Therefore, in the present embodiment, the summer time, the winter time, and the intermediate period are distinguished from the date of the internal clock 24, and the outside air temperature during transportation (in other words, during the cold-holding operation) is estimated based on the distinction. The controller 21 has a function as a temperature estimating means.

Then, from the date of the internal clock 24,
The winter and the intermediate period are estimated, and the electromagnetic on-off valves 14B and 14C are controlled to open and close by a control signal from the controller 21. For example, as shown in Table 6 below, the solenoid on-off valves 14B,
14C is controlled to open and close. That is, in the present embodiment, the outside air temperature estimating means (that is, the internal clock 24 and the controller 21) and the electromagnetic on-off valve 14
B and 14C constitute the cold storage amount adjusting means. The rotary switches 22A, 22B
And the outside air temperature sensor 23 is not provided.

[0068]

[Table 6]

That is, the magnitude of the cooling load is determined from the date of the internal clock 24, and the regenerator 3 is determined based on the magnitude of the cooling load.
The circulation of the cooling refrigerant to each of the cold storage blocks 3A, 3B, 3C in (1) is controlled by the opening and closing of the electromagnetic switching valves 14B, 14C (in other words, the circulation is controlled by the refrigerant closing means). For example, when it is determined that the cold load is large in summer, the electromagnetic on-off valves 14B and 14C are opened (in other words, the refrigerant flow control is not performed by the refrigerant closing means), and all the cold storage blocks in the cold storage device 3 are stored. 3
When the cooling refrigerant is supplied to A, 3B, and 3C, all the regenerative blocks 3A, 3B, and 3C are frozen, and when it is determined that the cold load is small in winter, the electromagnetic on-off valves 14B and 14C are closed ( In other words, the selected cold storage block 3
The refrigerant circulation to B and 3C is stopped by the refrigerant closing means), the cooling refrigerant is supplied only to some of the cold storage blocks 3A in the cool storage unit 3 and only the cold storage blocks 3A are frozen, and the cold storage load is moderate. When it is determined to be an interim period,
Only the solenoid on-off valve 14B is opened (in other words,
Refrigerant circulation to the selected regenerator block 3C is stopped by the refrigerant closing means), and cooling refrigerant is supplied to some regenerator blocks 3A and 3B in the regenerator 3 to freeze the regenerator blocks 3A and 3B. Becomes Therefore, based on the season estimated from the date of the internal clock 24, the solenoid on-off valve 1
It is possible to adjust the amount of cold storage by the cold storage blocks 3A, 3B, 3C in the cool storage unit 3 only by controlling the opening and closing of the 4B, 14C, thereby achieving energy saving and preventing freezing damage of the cold storage material. .

Incidentally, the cold storage operation may be performed outdoors, but in many cases, it is performed at an indoor luggage collection place. In this case, if the luggage collection place is cooled or heated, it may be difficult to determine whether it is summer, winter, or an interim period by detecting the outside air temperature during the cold storage operation. , The electromagnetic on-off valve 14 based on the seasonal judgment estimated from the date of the internal clock 24
If the opening and closing control of B and 14C is performed, it is possible to perform the cold storage amount adjustment corresponding to the accurate cold storage load.

The other structure, operation, and effect are the same as those in the first embodiment, and a description thereof will be omitted.

In this embodiment, as in the second and third embodiments, the cold storage block 3 is used.
The flow resistance of the refrigerant supplied to A, 3B, 3C may be different from each other, or the amount of the cold storage material in the cold storage blocks 3A, 3B, 3C may be different from each other.

Seventh Embodiment FIGS. 8 and 9 show a refrigerant system diagram of a cool box and a structure of a regenerator according to a seventh embodiment of the present invention.

In this case, the regenerator 3 is divided into first and second regenerative blocks 3A and 3B, and the first regenerative block 3A has a regenerator at each position from the downstream side to the upstream side with respect to the flow of the refrigerant. Material temperature Tr _1, Tr _2, Tr
_Three cool storage material temperature sensors 19A, 19 for detecting 3
B, 19C. As shown in FIG.
Refrigerant inlet 25a of cooling pipe 25 in cold storage block 3A
The third cool storage material temperature sensor 19C is located at a position about 1/3 from the upstream and the second cool storage material temperature sensor 19B is located at a position about 2/3 from the upstream in a distance from the upstream to the refrigerant outlet 25b.
However, the first cold storage material temperature sensors 19A are respectively arranged at the most downstream positions, and the respective detected temperature information (that is, the cold storage material temperatures Tr ₁ , Tr ₂ , Tr ₃ ) are input to the controller 21. It has become. As shown in FIG. 9, in the regenerator 3, cold storage materials 5A, 5A having relatively high freezing points are arranged on both sides of the cold storage material temperature sensors 19A, 19B, 19C, Cold storage materials 5B, 5B,... Having a low freezing point are arranged.

In the present embodiment, the controller 21 is provided with the cold storage material temperature sensors 19A, 19B,
Temperature information from 19C (that is, cold storage material temperatures Tr ₁ , T
r ₂ , Tr ₃ ) and the setting state of the two rotary switches 22A and 22B acting as the cold-holding load selecting means which are manually set according to the cold-holding load.
, The operating state of the compressor 6 (for example, the thermo-OFF temperature or the operating time of the compressor 6) is controlled. That is, in the present embodiment, the two rotary switches 22 acting as the cooling load selecting means are provided.
A, 22B and the compressor operation control means constitute cool storage amount adjusting means. In this case,
The electromagnetic on-off valves 14B and 14C as the refrigerant closing means are not provided. The operation control of the compressor 6 is based on the index L (see Table 2) of the cooling load obtained in the first embodiment.
Is performed as shown in Table 7 below.

[0076]

[Table 7]

That is, when it is determined that the cooling load is small.
Is the temperature of the third regenerator material installed upstream of the regenerator 3
Cold storage material temperature Tr detected by sensor 19C_ThreeBy
Thermo-ON / OFF control of the compressor 6
Only a part of the cold storage material in the vessel 3 is frozen,
If it is determined to be large, install it downstream of the regenerator 3
Detected by the first cold storage material temperature sensor 19A.
Cool storage material temperature Tr₁ON / OF of compressor 6
F control is performed, and all the regenerator materials in the regenerator 3 are completely
If it is determined that the cooling load is moderate,
The second cold storage material temperature sensor attached to the middle stream of the cooler 3
Cold storage material temperature Tr detected by 19B _TwoCompressed by
The thermo-ON / OFF control of the machine 6 is performed and the regenerator 3
About half of the cold storage material will be frozen
It is.

As described above, although the threshold value of the compressor operation control is the same depending on the cold storage load, the frozen state of the cold storage material can be appropriately adjusted to the cold storage load by changing the temperature sensor of the cold storage material to be used. Can be.

As described above, in the present embodiment, the rotary switches 22A and 22B (in other words,
The amount of cold storage in the regenerator 3 can be adjusted only by controlling the operation state of the compressor 6 in accordance with the cold storage load selected and set by the cold storage load selecting means.
It is possible to achieve energy saving and prevent freezing damage of the refrigerated material.

In the present embodiment, the operation of the compressor 6 is controlled by selecting the temperature of the cold storage material in the thermo-ON / OFF control. However, the operation may be controlled by selecting the operation time. is there.

The other structure, operation, and effect are the same as those in the first embodiment, and the description is omitted.

In this embodiment, as in the second and third embodiments, the cold storage block 3
The flow resistance of the refrigerant supplied to A and 3B may be different from each other, or the amount of the cold storage material in the cold storage blocks 3A and 3B may be different from each other.

Eighth Embodiment FIG. 10 shows a refrigerant system diagram of a cool box according to an eighth embodiment of the present invention.

In this case, the structure of the refrigeration system 4 is the same as that in the seventh embodiment,
1 is provided with an outside air temperature sensor 23 acting as outside air temperature detecting means in place of the rotary switches 22A and 22B. The operation control of the compressor 6 is as follows:
Based on the outside air temperature To detected by the outside air temperature sensor 23, the operation is performed as shown in Table 8 below. In the present embodiment, the outside air temperature detecting means (that is, the outside air temperature sensor 23) and the compressor operation control means constitute the cold storage amount adjusting means.

[0085]

[Table 8]

That is, when it is determined that the outside air temperature To is relatively high and the cooling load is large, the temperature of the cold storage material Tr ₁ detected by the first cold storage material temperature sensor 19A attached downstream of the cold storage unit 3 is used. Thermo ON of compressor 6
/ OFF control is performed, all the regenerator materials in the regenerator 3 are completely frozen, and when it is determined that the outside air temperature To is relatively low and the refrigerating load is small, the second regenerator mounted upstream of the regenerator 3 is determined. The thermostat of the compressor 6 is turned on / off according to the cold storage material temperature Tr ₃ detected by the cold storage material temperature sensor 19C.
When the OFF control was performed and only a part of the regenerator material in the regenerator 3 was frozen, the outside air temperature To showed an intermediate value, and when it was judged that the refrigerating load was also moderate, the regenerator 3 was mounted in the middle stream. thermo ON / O of the compressor 6 by the cold storage material temperature Tr ₂ detected by the second cold accumulating material temperature sensor 19B
FF control is performed, and about half of the cool storage material in the cool storage unit 3 is frozen.

As described above, the threshold value of the compressor operation control is the same depending on the outside air temperature. Can be.

As described above, in the present embodiment, the amount of cold storage in the regenerator 3 can be adjusted only by controlling the operating state of the compressor 6 in accordance with the outside air temperature To, thereby saving energy. Achievement and prevention of the occurrence of freezing damage of the refrigerated insulation can be achieved.

The cold storage operation may be performed outdoors, but in many cases, it is performed at an indoor luggage collection place. In this case, even if the baggage collection area is cooled or heated, the temperature outside the cool box is generally relatively high in the summer and the temperature outside the cool box is relatively low in the winter, so the appropriate set temperature is selected. By doing so, it can be determined whether it is summer, winter, or an interim period.

In the present embodiment, the compressor 6
Is controlled by selecting the cool storage material temperature in the thermo ON / OFF control, but may be controlled by selecting the operation time.

The other configuration and operation and effect are the same as those in the first embodiment, and the description is omitted.

Note that, in the present embodiment, as in the second and third embodiments, the cold storage block 3
The flow resistance of the refrigerant supplied to A and 3B may be different from each other, or the amount of the cold storage material in the cold storage blocks 3A and 3B may be different from each other.

Ninth Embodiment In this case, the structure of the refrigeration system 4 is the same as in the eighth embodiment. The operation of the compressor 6 is controlled as shown in Table 9 below based on the stored outside air temperature value To (m) obtained in the fifth embodiment. In the present embodiment, the outside air temperature storage means (that is, the outside air temperature sensor 23 and the controller 2
1) and the compressor operation control means constitute cold storage amount adjustment means.

[0094]

[Table 9]

That is, if it is determined that the stored outside air temperature value To (m) is relatively high and the cooling load is large, the regenerator 3
Cold storage material temperature sensor 19A attached downstream of
The thermo-ON / OFF control of the compressor 6 is performed based on the cold storage material temperature Tr ₁ detected by the above, all the cold storage materials in the cold storage 3 are completely frozen, and the stored outside air temperature value To (m)
Is relatively low and the cooling load is small,
Thermo-ON / OFF control of the compressor 6 is performed based on the cold storage material temperature Tr ₃ detected by the third cold storage material temperature sensor 19C attached upstream of the cold storage device 3, and only a part of the cold storage material in the cold storage device 3. It is frozen and the outside air temperature memory value T
When it is determined that o (m) is an intermediate value and the refrigerating load is also moderate, the compressor is determined by the regenerator material temperature Tr ₂ detected by the second regenerator material temperature sensor 19B attached to the middle flow of the regenerator 3. The thermo ON / OFF control of No. 6 is performed, and about half of the cold storage material in the cold storage device 3 is frozen.

As described above, the threshold value of the compressor operation control is the same depending on the stored outside air temperature. can do.

As described above, in the present embodiment, the amount of cold storage in the regenerator 3 can be adjusted only by controlling the operating state of the compressor 6 in accordance with the stored outside air temperature value To (m). As a result, it is possible to achieve energy saving and prevent freezing damage of the refrigerated cold storage material.

In this embodiment, three cool storage material temperature sensors 19A, 19B, and 19C are used. The operation of the compressor 6 may be controlled using only Tr ₁ as shown in Table 10 below. Here, ΔTi is a refrigerator temperature correction value, ΔTc is a cold storage material temperature correction value, and ΔTf is a freezing storage material temperature correction value.

[0099]

[Table 10]

That is, when the outside air temperature storage value To (m) is high, the compressor 6 is turned on at a relatively low temperature of the cold storage material.
FF is performed, and when the outside air temperature storage value To (m) is low, the compressor 6 is thermo-off at a relatively high cold storage material temperature.

The cold storage operation may be performed outdoors, but in many cases, it is performed at an indoor luggage collection site. In this case, if the luggage collection area is cooled or heated, it may be difficult to determine whether it is summer, winter, or an interim period by detecting the outside air temperature during the cold storage operation. As in the above, the outside air temperature during transportation (in other words, during the cooling operation) is measured, and the average value is stored as the outside air temperature storage value To (m),
If the operation control of the compressor 6 is performed based on the stored outside air temperature value To (m), the season can be determined without determining the season.
It is possible to perform the cold storage amount adjustment corresponding to an accurate cold storage load.

In the present embodiment, the compressor 6
Is controlled by selecting the cool storage material temperature in the thermo ON / OFF control, but may be controlled by selecting the operation time.

The other configuration, operation, and effect are the same as those in the first embodiment, and the description is omitted.

In this embodiment, as in the second and third embodiments, the cold storage block 3 is used.
The flow resistance of the refrigerant supplied to A and 3B may be different from each other, or the amount of the cold storage material in the cold storage blocks 3A and 3B may be different from each other.

Tenth Embodiment FIG. 11 shows a refrigerant system diagram of a cool box according to a tenth embodiment of the present invention.

In this case, the controller 21 has a built-in internal clock 24, and the internal clock 24 displays the date and time (in other words, it has a calendar function). Therefore, in the present embodiment, the summer time, the winter time, and the intermediate period are distinguished from the date of the internal clock 24, and the outside air temperature during transportation (in other words, during the cold-holding operation) is estimated based on the distinction. The controller 21 has a function as a temperature estimating means.

Then, from the date of the internal clock 24,
The winter and the intermediate period are estimated, and the operation of the compressor 6 is controlled by a control signal from the controller 21. For example, the compressor 6 is thermo-on / off controlled in accordance with the date of the internal clock 24 as shown in Table 11 below. That is, in the present embodiment, the outside air temperature estimating means (that is, the internal clock 24 and the controller 21)
The compressor operation control means and the compressor operation control means constitute cool storage amount adjusting means. The rotary switch 22
A, 22B and the outside air temperature sensor 23 are not provided.

[0108]

[Table 11]

That is, the magnitude of the cooling load is determined from the date of the internal clock 24, and the compressor 6 is determined based on the magnitude of the cooling load.
Is to be operation-controlled (in other words, thermo-ON / OFF control). For example, when it is determined that the summer time when the cold storage load is large, the thermo ON / O of the compressor 6 is determined by the cold storage material temperature Tr ₁ detected by the first cold storage material temperature sensor 19A attached downstream of the cool storage unit 3.
When the FF control is performed and all the regenerator materials in the regenerator 3 are completely frozen and it is determined that the cold storage load is small in winter, the temperature is detected by a third regenerator material sensor 19C attached upstream of the regenerator 3. Thermo-ON / OFF control of the compressor 6 is performed based on the regenerative material temperature Tr ₃ , and only a part of the regenerator material in the regenerator 3 is frozen. 3 thermo oN of the compressor 6 by the cold storage material temperature Tr ₂ detected by the second cold accumulating material temperature sensor 19B mounted on the middle
/ OFF control is performed, and about half of the cool storage material in the cool storage device 3 is frozen. Therefore,
Only by controlling the opening and closing of the electromagnetic on-off valves 14B and 14C based on the season estimated from the date of the internal clock 24, the regenerator 3
It is possible to adjust the amount of cold storage by the cold storage blocks 3A, 3B, and 3C, thereby achieving energy saving and preventing freezing damage of the refrigerated cold storage material.

Incidentally, the cold storage operation may be performed outdoors, but in many cases, it is performed at an indoor luggage collection place. In this case, if the luggage collection area is cooled or heated, it may be difficult to determine whether it is summer, winter, or an interim period by detecting the outside air temperature during the cold storage operation. When the operation control of the compressor 6 is performed based on the seasonal judgment estimated from the date of the internal clock 24, the cold storage amount adjustment corresponding to the proper cold storage load can be performed.

In the present embodiment, the compressor 6
Is controlled by selecting the cool storage material temperature in the thermo ON / OFF control, but may be controlled by selecting the operation time.

[0112] Other configurations, functions and effects are the same as those in the first embodiment, and a description thereof will be omitted.

Note that, in the case of the present embodiment, similarly to the second and third embodiments, the cold storage block 3
The flow resistance of the refrigerant supplied to A, 3B, 3C may be different from each other, or the amount of the cold storage material in the cold storage blocks 3A, 3B, 3C may be different from each other.

[0114]

According to the first aspect of the present invention, a regenerator 3 having a built-in regenerative material 5, 5,... In a cool box equipped with a refrigerating device 4 for cooling and freezing the materials 5, 5,.
A cooling storage amount adjusting means for adjusting the freezing state of the cold storage materials 5, 5,... According to the cold storage load is provided, and the cold storage materials 5, 5,. At the time of transportation by truck, when the cold storage material stored in the cold storage room 2 is cooled by the cold stored in the cold storage materials 5, 5,..., A cold storage load (for example, a cold storage load generated in the cold storage room 2 and a cold storage). The freezing state of the cold storage materials 5, 5,... Is adjusted in accordance with the temperature of the cold storage material 5, 5... And power consumption can be minimized (in other words, energy saving can be achieved). Also, since the amount of cold storage corresponding to the cold storage load will be obtained, even if the outside air temperature is low, the internal temperature will not be too low, preventing the occurrence of freezing damage of refrigerated cold storage products There is also an effect that can be done.

As in the invention of claim 2, claim 1
In the cool storage box described above, the regenerator 3 is divided into a plurality of regenerative blocks 3A, 3B,... To which the cooling refrigerant in the refrigerating device 4 is supplied in parallel, and the regenerative amount adjusting means is connected to a refrigerating load. In the case of being constituted by a cold-holding load selecting means which is set by a manual operation in response thereto and a refrigerant closing means for controlling the flow of the cooling refrigerant to each of the cold-storage blocks 3A, 3B,... According to the setting state of the cold-holding load selecting means, Each of the cool storage blocks 3A, 3B,... In the cool storage unit 3 corresponds to the cool load selected and set by the cool load selecting means.
The flow of the cooling refrigerant to (1) is controlled by the refrigerant closing means (in other words, the flow is stopped). For example, when the cold storage load is large, the refrigerant flow control by the refrigerant closing means is not performed, and all the cold storage blocks 3
A, 3B,... Are frozen, while when the cooling load is small, the circulation of the refrigerant to the selected regenerator block is controlled (ie, stopped) by the refrigerant closing means, and only a part of the regenerator blocks in the regenerator 3 is cooled. It will be frozen. Therefore,
Only by controlling the refrigerant closing means in accordance with the cold storage load selected and set by the cold storage load selecting means, the amount of cold storage by the cold storage blocks 3A, 3B,... It is possible to prevent the occurrence of freezing damage of the refrigerated material.

As in the invention of claim 3, claim 1
In the cold storage box described above, the refrigerating device 4 is controlled by the cold storage load selecting means which is manually set according to the cold storage load and the setting state of the cold storage load selecting means.
And the compressor operation control means for controlling the operation state of the compressor 6 in (1), the operation state (for example, compression) of the compressor 6 in the refrigerating device 4 corresponding to the cooling load selected and set by the cooling load selection means. Thermo OFF of machine 6
Temperature or operation time) is controlled. For example, when the cold storage load is large, the thermo ON / OFF of the compressor 6 (for example, the state shown in Table 1) or the operation time of the compressor 6 is controlled so that all the cold storage materials can be completely frozen. Is smaller, the thermo-OFF temperature of the compressor 6 is changed to be slightly higher, or the operation time of the compressor 6 is changed to be slightly shorter, and only a part of the cold storage material in the regenerator 3 is frozen. Become. Therefore, it is possible to adjust the amount of cold storage in the regenerator 3 only by controlling the operation state of the compressor 6 in accordance with the cold storage load selected and set by the cold storage load selecting means, thereby achieving energy saving and refrigerated cold storage. Can be prevented from freezing damage.

As in the invention of claim 4, claim 1
In the cold storage described above, the regenerator 3 is divided into a plurality of regenerative blocks 3A, 3B,... To which the cooling refrigerant in the refrigerating device 4 is supplied in parallel, and the regenerator amount adjusting means is operated during the regenerative operation , And a refrigerant closure that controls the flow of the cooling refrigerant to each of the cold storage blocks 3A, 3B,... Based on the outside air temperature To detected by the outside air temperature detection means 23. , The outside air temperature detecting means 2
3. The magnitude of the cooling load is determined from the outside air temperature To detected by the control unit 3, and the flow of the cooling refrigerant to each of the cold storage blocks 3A, 3B,... In the regenerator 3 is controlled by the refrigerant closing means based on the magnitude of the cooling load. (In other words, distribution stop). For example, when it is determined that the outside air temperature To is high and the cooling load is large, the refrigerant circulation control by the refrigerant closing means is not performed, and all the cold storage blocks 3A, 3B,. When it is determined that To is low and the refrigerating load is small, the refrigerant flow to the selected regenerator block is controlled (ie, stopped) by the refrigerant closing unit, and only a part of the regenerator blocks in the regenerator 3 is frozen. It will be. Therefore, only by controlling the refrigerant closing means based on the outside air temperature To detected by the outside air temperature detecting means 23, the amount of cold storage by the cold storage blocks 3A, 3B,... Achievement and prevention of the occurrence of freezing damage of the refrigerated insulation can be achieved.

As in the invention of claim 5, claim 1
In the cold storage described in the above, the refrigerating amount adjusting means is controlled by the refrigerating apparatus 4 based on the outside air temperature detecting means 23 for detecting the outside air temperature To during the cold storage operation and the outside air temperature To detected by the outside air temperature detecting means 23. When the compressor 6 is constituted by compressor operation control means for controlling the operation state of the compressor 6, the magnitude of the cooling load is determined from the outside air temperature To detected by the outside air temperature detection means 23, and the refrigeration is performed based on the magnitude of the cooling load. The operation state of the compressor 6 in the device 4 (for example, the thermo-OFF temperature or the operation time of the compressor 6)
Is controlled. For example, when it is determined that the outside air temperature To is high and the cooling load is large, the thermo-ON / OFF of the compressor 6 (for example, the state in Table 1) so that all the cold storage materials 5, 5,. Alternatively, the operation time of the compressor 6 is controlled, while the outside air temperature To is low,
When it is determined that the cooling load is small, the thermo-OFF temperature of the compressor 6 is changed to a slightly higher temperature, or
The operation time is slightly shortened, and only a part of the regenerator material in the regenerator 3 is frozen. Therefore, the cold storage amount in the regenerator 3 can be adjusted only by controlling the operation state of the compressor 6 based on the outside air temperature To detected by the outside air temperature detecting means 23, achieving energy saving and refrigerated cold storage. Can be prevented from freezing damage.

As in the invention of claim 6, claim 1
In the cool storage box described above, the regenerator 3 is divided into a plurality of regenerative blocks 3A, 3B,... To which a cooling refrigerant in the refrigerating device 4 is supplied in parallel, and the regenerator amount adjusting means is provided during transportation. Based on the outside air temperature storage means for storing the outside air temperature To and the outside air temperature storage value To (m) stored by the outside air temperature storage means, the flow of the cooling refrigerant to each of the cold storage blocks 3A, 3B,. When configured by the controlled refrigerant closing means, the magnitude of the cold storage load is determined from the outside air temperature storage value To (m) stored by the outside air temperature storage means, and each cold storage in the regenerator 3 is determined based on the magnitude of the cold storage load. The flow of the cooling refrigerant to the blocks 3A, 3B,... Is controlled by the refrigerant closing means (in other words, the flow is stopped). For example, the stored outside air temperature T
When it is determined that o (m) is high and the cooling load is large, the refrigerant closing control is not performed by the refrigerant closing means, and all the cold storage blocks 3A, 3B,... in the cold storage 3 are frozen, while the outside air temperature is stored. When it is determined that the value To (m) is low and the cooling load is small, the flow of the refrigerant to the selected cold storage block is controlled by the refrigerant closing means (that is, stopped).
As a result, only some of the cold storage blocks in the cold storage device 3 are frozen. Therefore, it is possible to adjust the amount of cold storage by the cold storage blocks 3A, 3B,... In the cool storage unit 3 only by controlling the refrigerant closing means based on the stored outside air temperature value To (m) stored by the outside air temperature stored value means. As a result, it is possible to achieve energy saving and prevent freezing damage of the refrigerated cold storage material.

As in the invention of claim 7, claim 1
In the cool storage box described above, the cool storage amount adjusting means is configured to store the outside air temperature To during transportation based on an outside air temperature storage means and an outside air temperature storage value To (m) stored by the outside air temperature storage means. Compressor 6 in refrigeration system 4
And the compressor operation control means for controlling the operation state of the air conditioner, the magnitude of the cooling load is determined from the outside temperature storage value To (m) stored by the outside temperature storage means, and based on the magnitude of the cooling load. The operating state of the compressor 6 in the refrigeration apparatus 4 (for example, the thermo-OFF temperature or the operating time of the compressor 6) is controlled. For example, when the stored outside air temperature value To (m) is determined to be high and the cooling load is determined to be large, the thermo-ON / OFF of the compressor 6 (for example, the thermo-on / off operation so that all the cold storage materials 5, 5,... Table 1
) Or the operation time of the compressor 6 is controlled. On the other hand, when it is determined that the stored outside air temperature value To (m) is low and the cooling load is small, the thermo OFF temperature of the compressor 6 is changed to a slightly higher temperature. Alternatively, the operation time of the compressor 6 is changed to be slightly shorter, and only a part of the regenerator material in the regenerator 3 is frozen. Therefore, it is possible to adjust the amount of cold storage in the regenerator 3 only by controlling the operating state of the compressor based on the outside air temperature storage value To (m) stored by the outside air temperature storage means, thereby achieving energy saving. It is possible to prevent the occurrence of freezing damage of the refrigerated material.

As in the invention of claim 8, claim 1
In the cold storage described above, the regenerator 3 is divided into a plurality of regenerative blocks 3A, 3B,... To which the cooling refrigerant in the refrigerating device 4 is supplied in parallel, and an internal clock 24 With a built-in
The cool storage amount adjusting means is configured to control the cool storage blocks 3A, 3B,. When configured by a refrigerant closing means that controls the flow of the cooling refrigerant to the
The magnitude of the cooling load is determined from the outside air temperature estimation value estimated by the outside air temperature estimating means from the date and time of the internal clock 24, and based on the magnitude of the cooling load, each of the cold storage blocks 3A, 3B,. The circulation of the cooling refrigerant to the cooling medium is controlled by the refrigerant closing means (in other words, the circulation is stopped). For example, it is estimated that summer is from the internal clock 24,
When the outside air temperature estimation value is high and it is determined that the cooling load is large, the refrigerant flow control by the refrigerant closing means is not performed,
All the cold storage blocks 3A, 3B,... In the cool storage unit 3 are frozen, while the internal clock 24 estimates that the winter is in progress, the estimated outside air temperature is low, and the cold storage load is determined to be small. The flow of the refrigerant to the regenerator 3 is controlled (that is, stopped) by the refrigerant closing means, and only a part of the regenerator blocks in the regenerator 3 is frozen. Therefore, the cold storage blocks 3A, 3B,... In the regenerator 3 are controlled only by controlling the refrigerant closing means based on the estimated outside air temperature from the internal clock 24 by the outside air temperature estimation means.
, The amount of cold storage can be adjusted, thereby achieving energy saving and preventing freezing damage of the refrigerated cold storage material.

As in the invention of claim 9, claim 1
In the refrigerator, an internal clock 24 is built in the controller 21 of the refrigerating apparatus 4, and the cool storage amount adjusting means is provided with an external air temperature estimating means for estimating an external air temperature during transportation by the internal clock 24, and the external air temperature. When configured by compressor operation control means for controlling the operation state of the compressor 6 in the refrigerating apparatus 4 based on the outside air temperature estimated value estimated by the estimation means, the outside air temperature is estimated from the date and time of the internal clock 24. The magnitude of the cooling load is determined from the estimated outside air temperature estimated by the means, and based on the magnitude of the cooling load, the operating state of the compressor 6 in the refrigeration system 4 (for example, the thermo-OFF temperature or operating time of the compressor 6). Is controlled. For example, when summer time is estimated from the internal clock, the estimated outside air temperature is high, and it is determined that the cooling load is large, the thermo ON / OFF of the compressor 6 is set so that all the cold storage materials 5, 5,. OFF (for example, the state shown in Table 1) or the operation time of the compressor 6 is controlled. On the other hand, when it is determined from the internal clock that winter is in progress, the estimated outside air temperature is low, and the cooling load is small, the compressor 6 Is slightly changed, or the operation time of the compressor 6 is changed to be slightly shorter, so that only a part of the cold storage material in the cool storage unit 3 is frozen.
Therefore, the amount of cold storage in the regenerator 3 can be adjusted only by controlling the operating state of the compressor 6 based on the outside air temperature estimation value estimated by the outside air temperature estimation means from the date and time of the internal clock 24. As a result, it is possible to achieve energy saving and prevent freezing damage of the refrigerated cold storage material.

As in the tenth or eleventh aspect of the present invention, in the cold storage according to any one of the second, fourth, sixth, and eighth aspects, the flow of the refrigerant supplied to each of the cold storage blocks 3A, 3B,. If the resistances are different,
Alternatively, in the cool storage box according to any one of claims 3, 5, 7, and 9, the regenerator 3 is provided with a plurality of regenerative blocks 3A, 3B,. When the flow resistance of the refrigerant supplied to each of the cold storage blocks 3A, 3B,... Is made different from each other, the refrigerant flows most easily in the cold storage block where the flow resistance of the supplied refrigerant is the smallest. In the cold storage block where the flow resistance of the supplied refrigerant is the highest, the refrigerant becomes the least difficult to flow, and even if the cold storage block where the flow resistance of the supplied refrigerant is sufficiently frozen, the cold storage block where the flow resistance of the supplied refrigerant is the highest. Blocks can create conditions that are not sufficiently frozen. Further, the temperature of the cold storage materials 5, 5,... Is lowest in the cold storage block in which the flow resistance of the supplied refrigerant is the smallest, is highest in the cold storage block in which the flow resistance of the supplied refrigerant is the largest, and the temperature of the supplied refrigerant. As compared with the case where the flow resistance of the cold storage material is uniform, the difference in the temperature of the cold storage material in each cold storage block becomes larger. If the temperature is detected by the material temperature sensor, the temperature of the cold storage material in another cold storage block can be easily estimated, and the freezing state of the cold storage material can be easily adjusted. Therefore, it is easy to adjust the frozen state of the cold storage material and to detect the temperature of the cold storage material, and it is possible to easily realize the frozen state of the cold storage material optimal for the cold storage load.

As in the twelfth or thirteenth aspect of the present invention, in the cool storage box according to any one of the second, fourth, sixth and eighth aspects, each of the cold storage blocks 3A and 3B is provided.
10. When the amounts of the cold storage materials 5, 5,... Are different from each other, or in the cool storage box according to any one of claims 3, 5, 7, and 9, the regenerator 3 is connected to the refrigerating device. 4 is divided into a plurality of cold storage blocks 3A, 3B,... To be supplied in parallel, and the amount of the cold storage material in each of the cold storage blocks is made different from each other. Even if you drive,
The cold storage block with the least amount of cold storage material freezes sufficiently, but the cold storage block with the largest amount of cold storage material does not freeze sufficiently. Furthermore, the temperature of the cold storage material is also the lowest in the cold storage block with the least amount of cold storage material,
Since the difference in the temperature of the cold storage material in each of the cold storage blocks is larger than that in the case where the amount of the cold storage material is the highest and the amount of the cold storage material is uniform, a certain cold storage block (for example, If the temperature of the cold storage material in the most cold storage block is detected by the cold storage material temperature sensor, the temperature of the cold storage material in other cold storage blocks can be easily estimated, and the freezing state of the cold storage material can be easily adjusted. Therefore, it is easy to adjust the frozen state of the cold storage material and to detect the temperature of the cold storage material, and it is possible to easily realize the frozen state of the cold storage material optimal for the cold storage load.

As in the invention of claim 14, claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 1
In refrigerator of any one of claims 2 and 13, the cold accumulating material temperature detection for detecting the cold accumulating material temperature Tr _1, Tr ₂ · · at a plurality of positions toward the upstream side from the downstream side of the cooling pipe 25 in the regenerator 3 means 19A, annexed to 19B · ·, and to perform operation control of the refrigeration apparatus 4 based on the cold storage material temperature Tr _1, Tr ₂ ·· sensed cold accumulation material temperature detecting means 19A, the 19B · · In case, cold storage material 5,
Are frozen in order from the one located upstream of the cooling pipe 25 in the regenerator 3, so that the cold storage material temperature Tr at a plurality of positions from the downstream side to the upstream side of the cooling pipe 25
By detecting ₁ , Tr ₂ ..., It is possible to know how much of the cold storage materials 5, 5,. For example, from the downstream to the upstream of the regenerators 5, 5,..., Three of them are arranged at a position of about 1/4, about 1/2, and about 3/4 of the distance from the inlet of the regenerator 3. if cold storage material temperature Tr ₂ of the second from the upstream long as drops below freezing point, can be inferred that about half the cold accumulating material 5,5 ... is frozen. Therefore, a plurality of cold storage material temperatures Tr
By detecting ₁ , Tr ₂ .., it is possible to easily detect the frozen state, and the cold storage material 5, 5,.
・ The frozen state can be easily realized.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a cool box according to a first embodiment of the present invention.

FIG. 2 is a refrigerant system diagram of a cool box according to the first embodiment of the present invention.

FIG. 3 is a refrigerant system diagram of a cool box according to a second embodiment of the present invention.

FIG. 4 is a refrigerant system diagram of a cool box according to a third embodiment of the present invention.

FIG. 5 is a refrigerant system diagram of a cool box according to a fourth embodiment of the present invention.

FIG. 6 is a flowchart for calculating an outside air temperature stored value in a cool box according to a fifth embodiment of the present invention.

FIG. 7 is a refrigerant system diagram of a cool box according to a sixth embodiment of the present invention.

FIG. 8 is a refrigerant system diagram of a cool box according to a seventh embodiment of the present invention.

FIG. 9 is a front view of a regenerator in a cool box according to a seventh embodiment of the present invention.

FIG. 10 is a refrigerant system diagram of a cool box according to an eighth embodiment of the present invention.

FIG. 11 is a refrigerant system diagram of a cool box according to a tenth embodiment of the present invention.

[Explanation of symbols]

1 is a cool box main body, 2 is a cool box, 3 is a regenerator, 3A, 3B
.. is a regenerative block, 4 is a refrigerating device, 5 is a regenerative material, 6 is a compressor, 7 is a condenser, 13A, 13B is a capillary tube, 14B, 14C is refrigerant closing means (electromagnetic on-off valve), , 19A, 19B,... Are cold storage material temperature sensors, 21 is a controller, 22A and 22B are cool load selection means (rotary switches), 23 is outside air temperature detection means (outside air temperature sensor), 24 is an internal clock, and 25 is cooling. The tube, To is the outside air temperature, and To (m) is the stored outside air temperature.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Kan Ikemiya, 1304 Kanaokacho, Sakai City, Osaka Daikin Industries, Ltd. Sakai Seisakusho Kanaoka Factory F-term (reference) 3L045 AA01 AA02 AA03 BA02 BA10 CA02 DA02 EA02 HA07 JA14 KA14 LA05 LA12 MA01 MA05 MA11 NA16 PA02 PA04 PA05

Claims (14)

[Claims] 1. A regenerator (3) containing cold storage materials (5) for keeping a cold storage room (2) in a cold storage main body (1) having a heat insulating structure, and a regenerator (3). ) Cold storage material (5),
(5) A cold storage provided with a refrigerating device (4) for cooling and freezing the cold storage material (5).
(5) A cool storage box provided with cold storage amount adjusting means for adjusting the freezing state. 2. The regenerator (3) is divided into a plurality of regenerative blocks (3A), (3B)... To which cooling refrigerant in the refrigerating device (4) is supplied in parallel, and the regenerator amount is stored. The adjusting means is provided with the cold storage load selecting means set by manual operation according to the cold storage load, and the setting condition of the cold storage load selecting means, for each of the cold storage blocks (3A), (3
2. The cool storage box according to claim 1, wherein the cooling unit is configured to control the flow of the cooling refrigerant to B). 3. The refrigerating machine according to claim 1, wherein the refrigerating storage amount adjusting means is manually operated in accordance with the refrigerating load, and the refrigerating load selecting means is set. 2. The compressor according to claim 1, wherein the compressor includes a compressor operation control means for controlling an operation state.
The cool box described. 4. The regenerator (3) is divided into a plurality of regenerative blocks (3A), (3B)... To which cooling refrigerant in the refrigerating device (4) is supplied in parallel, and the regenerator amount is stored. The adjusting means includes an outside air temperature detecting means (23) for detecting an outside air temperature (To) during the cold storage operation, and an outside air temperature (T) detected by the outside air temperature detecting means (23).
o) Each of the cold storage blocks (3A), (3B)
The cold storage according to claim 1, characterized by comprising refrigerant closing means for controlling the flow of the cooling refrigerant to the refrigerator. 5. An outdoor air temperature detecting means (2) for detecting an outdoor air temperature (To) during a cold storage operation.
3) and compressor operation control means for controlling the operation state of the compressor (6) in the refrigeration system (4) based on the outside air temperature (To) detected by the outside air temperature detection means (23). The cold storage according to claim 1, wherein: 6. The regenerator (3) is divided into a plurality of regenerative blocks (3A), (3B)... To which cooling refrigerant in the refrigerating device (4) is supplied in parallel, and the regenerator amount is stored. The adjusting means includes an outside air temperature storage means for storing an outside air temperature (To) during transportation, and an outside air temperature storage value (To) stored by the outside air temperature storage means.
(M)), each of the cold storage blocks (3A), (3
2. The cool storage box according to claim 1, wherein the cooling unit is configured to control the flow of the cooling refrigerant to B). 7. An outdoor air temperature storage means for storing an outdoor air temperature (To) during transportation, and an external air temperature storage value (T) stored by said outdoor air temperature storage means.
The refrigerator according to claim 1, characterized by comprising compressor operation control means for controlling an operation state of the compressor (6) in the refrigerating device (4) based on o (m)). 8. The regenerator (3) is divided into a plurality of regenerative blocks (3A), (3B)... To which a cooling refrigerant in the refrigerating device (4) is supplied in parallel, and the refrigerating device (3) is divided. 4) The internal clock (2) is supplied to the controller (21).
4), and the cool storage amount adjusting means is controlled based on an outside air temperature estimating means for estimating an outside air temperature during transportation by the internal clock (24) and an outside air temperature estimation value estimated by the outside air temperature estimating means. 2. The cold storage according to claim 1, wherein the cooling storage means comprises cooling means for controlling the flow of cooling refrigerant to each of the cold storage blocks (3A), (3B),. 9. A controller (2) for the refrigeration system (4).
An internal clock (24) is built in 1), and the cool storage amount adjusting means is provided with an external air temperature estimating means for estimating an external air temperature during transportation by the internal clock (24), and an outside air estimated by the external air temperature estimating means. 2. The refrigerator according to claim 1, further comprising a compressor operation control unit that controls an operation state of the compressor in the refrigerating device based on the estimated temperature. 10. The cold storage blocks (3A), (3)
B). The cold storage according to any one of claims 2, 4, 6 and 8, wherein the flow resistance of the refrigerant supplied to B) is different from each other. 11. The regenerator (3) is divided into a plurality of regenerative blocks (3A), (3B)... To which a cooling refrigerant in the refrigerating device (4) is supplied in parallel. The cold storage according to any one of claims 3, 5, 7, and 9, wherein the flow resistance of the refrigerant supplied to the blocks (3A), (3B) ... is different from each other. 12. Each of the cold storage blocks (3A), (3
The cold storage according to any one of claims 2, 4, 6, and 8, wherein the amount of the cold storage material in (B) is different from each other. 13. The regenerator (3) is divided into a plurality of regenerative blocks (3A), (3B)... To which cooling refrigerant in the refrigerating device (4) is supplied in parallel. The cold storage according to any one of claims 3, 5, 7, and 9, wherein the amounts of the cold storage materials in the blocks (3A), (3B) ... are different from each other. 14. A cooling pipe (2) in said regenerator (3).
5) cold storage material temperature detecting means (19A), (19B)... For detecting the cold storage material temperatures (Tr ₁ ), (Tr ₂ ) at a plurality of positions from the upstream side to the downstream side. The operation control of the refrigerating device (4) is performed based on the cold storage material temperatures (Tr ₁ ), (Tr ₂ ), detected by the material temperature detecting means (19A), (19B),. Claims 1, 2, 3, 4, 5, 6, 7,
The cold storage according to any one of 8, 9, 10, 11, 12 and 13.