JP2502786B2 - Cold storage type cold storage - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a cold storage type cold storage for keeping the inside of a cold storage using a cold storage agent and used for transporting refrigerated products such as fresh foods and pharmaceuticals or products that require freezing. It is about.

2. Description of the Related Art As a cold storage type cool storage box, as shown in JP-A-1-234778, a small cold storage type cold storage box has been used for delivery of trucks and the like in distribution of fresh food. Hereinafter, an example of the conventional cold storage type cold storage box described above will be described with reference to the drawings.

FIG. 5 is a vertical cross-sectional view showing the structure of a conventional cold storage type cold storage, and FIG. 6 is an electric circuit diagram.

In the figure, reference numeral 1 is a cool box body, which is composed of a cabinet 2 in which a heat insulating material is incorporated, a door 3, and a gasket 11 for sealing the door 3 and the cabinet 2. Reference numeral 10 is a caster attached to the bottom of the cool box body 1. Reference numeral 12 denotes a cold storage chamber, and a cold storage chamber 13 is provided below the cold storage chamber 12, and is constituted by a cool storage type heat exchanger 8 including a cold storage agent and a refrigerant evaporation pipe, and a blower. A condensing unit 4 is attached to the lower surface of the bottom plate of the cool box body 1. The condensing unit 4 is provided with a compressor 7 as well as a condenser 5 and a condenser fan motor 6. The compressor 7, the condenser 5, the capillary (not shown), and the refrigerant evaporation pipe constitute a refrigerant circulation type cooling unit. Reference numeral 14 is a commercial power source, 15 is a main switch, 16 is a cold storage sensing thermostat, 22 is a charger, 17 is a cold room temperature controller (thermostat), and 19 is a changeover switch for operating the blower 9. Reference numeral 20 denotes a relay, which connects the charger 22 and the storage battery 21 only when the commercial power supply 14 is turned on. The storage battery 21 is a power source for operating the blower fan 9.

The operation of the cold storage type cold storage constructed as described above will be described with reference to FIGS. 5 and 6.

First, for cold storage operation, turn on the commercial power supply 14 and turn on the main switch.
When 15 is turned on, the refrigerant circulation type cooling unit (including the compressor 7, the condenser 5, the condenser fan motor 6, etc.) is operated via the cool storage sensing thermostat 16 that senses the cool storage of the cool storage type heat exchanger 8, The compressor 7 is repeatedly operated and stopped at a temperature to control the cold storage temperature of the cold storage heat exchanger 8 within a certain temperature range.

Further, the commercial power supply 14 operates the charger 22 and the relay 20, and the operation of the relay 20 electrically charges the storage battery 21 via the charger 22. The storage battery 21 is connected to the blower 9 via the inside temperature controller 17 and a changeover switch 19 (keeping cold when closed and dedicated to cold storage when open or non-cooling).

Next, in the cold insulation operation, after the cold storage type heat exchanger 8 completes the cold storage,
When the changeover switch 19 is turned on, the storage battery 21 is used as a power source to turn on / off the blower 9 so that the inside temperature controller 17 controls the inside of the cold storage chamber 12 to an arbitrary set temperature. Then, after the cooled transportation goods such as fresh foods transported from the production area and the like are put into the cold storage chamber 12, the commercial power source 14 is removed and the operation of the compressor 7 is stopped. Then, it is transported to the destination by being placed on a transportation truck or the like. At this time, the inside of the cold storage chamber 12 is cooled by the cold storage chamber 13 that is cooled by the latent heat of fusion of the cold storage type heat exchange element 8 to prevent the temperature rise of the transported goods.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-described conventional configuration, the regenerative heat exchanger 8 is used.
I did not know the completion of cold storage. Therefore, the transportation person
It is possible to store and transport the goods in a cold storage cool storage box where cold storage has not been completed.In this case, the cooling capacity is not sufficient and the temperature inside the storage room rises by the time it arrives. There was a problem that the quality of various transportation goods deteriorates.

Further, when cooling the cold storage chamber 13, the transport person must turn on the changeover switch 19, so if the operator forgets to turn on the changeover switch 19, the cold storage type cold storage box will be kept at the cold storage chamber 12 when necessary. The temperature has not dropped to the set temperature and cannot be used.

After the transportation, the person in charge of transportation sets the changeover switch 19 to OF
If you leave it for a long time without F, the blower 9 continues to operate,
There is a problem that the storage battery 21 is completely discharged and the performance of the storage battery 21 deteriorates.

The present invention solves the above problems, anyone can easily confirm that the cold storage is completed, eliminate the quality deterioration of the transported goods due to human error, and the inability to use the cool box, and the charger It is intended to provide a highly economical cold storage type cold storage in which a charger can be used for a long time by preventing complete discharge.

Means for Solving the Problems In order to solve the above problems, the cold storage cool box of the present invention is
A cooler containing a cool storage agent and a cooler, a cool box body composed of a cool room for keeping foods and other transported goods cool, a heat insulating partition wall for partitioning the cool storage room and the cool room and arranging ventilation holes, The ventilation fan that operates only when controlling the temperature of the cold storage room, the rechargeable storage battery that supplies power to the ventilation fan to operate the ventilation fan, and the signal from the temperature detection unit provided near the cold storage agent A temperature determining means for determining that the temperature has dropped below a predetermined value, a charger for charging the rechargeable storage battery,
The completion of cold storage is determined by inputting signals from the charging end detection means that detects the end of charging of the rechargeable storage battery of the charger and the temperature determination means and the charging end detection means. Equipped with a judging means, a power input judging means for judging whether the commercial power is being input, and a cool switch for setting the operation / stop of the ventilation fan. The power input judging means detects that the commercial power input is turned off and operates. When the commercial power input is off, the ventilation fan is operated to control the cold room to an arbitrary set temperature.
The load of the rechargeable storage battery after an arbitrary time by the timer means
It is turned off.

In addition, the power input determining means detects that the commercial power input is turned on, and heat is stored in the cool storage by exchanging heat with the cooler, and the cool storage completion determining means detects the cool storage completion, and then automatically operates the ventilation fan. By controlling the cold storage room to an arbitrary set temperature and pressing the cold storage switch, the ventilation fan is operated even during the cold storage of the cold storage agent to control the cold storage room to an arbitrary set temperature, and the cold insulation switch is turned on again during cold storage. Press to stop the cold insulation.

Effect The present invention, by the above-mentioned configuration, can notify the person in charge of transportation by the cold storage completion determining means that the cold storage is completed, and moreover, when the cold storage is completed, the temperature of the cold storage chamber is automatically set to an arbitrary set temperature. Since it is controlled, the transport person can use the cold storage type cold storage box only by turning on the power, and furthermore, the load of the rechargeable storage battery is automatically turned off after an arbitrary time after the power is turned off. The rechargeable storage battery can be used for a long time without any performance deterioration due to mistakes.

Further, for example, when it is desired to use the cold storage type cold storage immediately after turning on the power, the cold storage switch can be used in a short time by pressing the cold storage switch after turning on the power.

Embodiment A cold storage type cold storage according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a functional block diagram of a cold storage type cold storage in a freezing mode and a cold storage mode according to an embodiment of the present invention, and FIG. 2 is a rechargeable storage battery overdischarge prevention mode of a cold storage type cold storage in an embodiment of the present invention. It is a functional block diagram.

In FIG. 1, reference numeral 23 denotes a cabinet in which a heat insulating material is built in, a cabinet 24, a door 25, a door 25 and a cabinet 24.
And a gasket 26 for sealing the. Reference numeral 27 denotes a cold storage chamber, which is a latent heat type cold storage agent 28 having a freezing point lower than the set internal temperature of the cold storage and a cooler 29 for cooling and solidifying the cold storage agent 28.
And is formed in the lower part of the cool box body 23.

Reference numeral 31 is an adiabatic partition wall having a heat insulating property, and 32 is a vent hole, which is arranged at two locations on the adiabatic partition wall 31. 30 is a ventilation fan, a cabinet near one of the ventilation holes 32
It is located at the bottom of 24. 33 is a cool room, which is an adiabatic partition wall 31
And is formed on the upper part of the cool box body 23.
34 is a compressor 35 is a condenser, and 36 is a condenser fan, which are mounted outside the lower heat insulating wall surface of the cool box body 23. A compressor 34, a condenser 35, and a capillary tube (not shown) are connected in series to form a refrigerator unit 37, which is connected to a cooler 29 of a cold storage chamber 27 to form a refrigeration cycle.

Reference numeral 38 denotes a temperature detection unit that detects the temperature of the cold storage agent 28, and is attached near the cool storage agent 28 with a predetermined heat capacity. Reference numeral 39 is a cooled transportation item such as fresh food that has been transported from the production area, and 40 is a power cord. 41 is a cool room 33
This is an internal temperature detection unit installed in the upper part of the inside to detect the internal temperature of the cold storage room 33. Reference numeral 42 is a temperature determination means that sends a signal when the temperature detected by the temperature detection unit 38 becomes lower than a preset temperature T1. Reference numeral 43 is a power supply input judging means, and by inserting the power supply cord 40, when a commercial power supply is applied to the cooling unit 37, a compressor control means described later.
A signal is sent to 44 and the timer means 53. Reference numeral 44 denotes a compressor control means, which controls the compressor 34 to be turned off at T1 and turned on at T2 according to the temperature detected by the temperature detection portion 38 when the commercial power is applied by the power input determination means 43.

Reference numeral 45 is a charger that charges the rechargeable battery 46 during cold storage operation. 47 is a ventilation fan control means, which is supplied with power from the rechargeable storage battery 46 during the cold keeping operation and the ventilation fan 30 is driven by T4.
ON and T3 control OFF. Reference numeral 48 is a charging end detection means that transmits a signal when the charging of the rechargeable storage battery 46 from the charger 45 is completed. 49 is a temperature determination means 42 and a charging end detection means 48
The cool storage completion determining means for determining that the cool storage operation is completed based on the signal sent from, 50 is a cool storage completion display means (for example, LED, neon lamp, etc.) for displaying that the cool storage is completed by the cool storage completion determining means 49. is there. Reference numeral 51 is a cold-keeping display means for displaying that the cold-keeping chamber 33 is being kept cold when the cold-keeping chamber 33 is being controlled to an arbitrary set temperature. Reference numeral 52 is a cold insulation switch for starting or stopping the cold insulation at any time. Reference numeral 53 is a timer means for detecting that the commercial power supply is turned off by the power input determination means 43 and turning off the load of the rechargeable storage battery 46 after an arbitrary time from the commercial power supply being turned off.

The operation of the cold-storage cool box constructed as described above will be described below with reference to FIGS. 1 to 4.

FIG. 3 shows an example of a timing chart of the freezing mode and the rechargeable storage battery over-discharge prevention mode function in the present embodiment, and FIG. 4 shows the cooling mode and the rechargeable storage battery over-discharge prevention mode function in the present embodiment. It is an example of a timing chart. In the figure, A and C are the temperatures in the cold storage chamber 33, and B and D are the temperatures of the cold storage agent 28.

First, the freezing mode function will be described. In the cold storage operation, the power input determining means 43 detects that the power cord 40 is plugged into the power source at time tO, and sends a signal to the compressor controlling means 44. Then, the compressor control means 44, which receives the signal from the power input determination means 43, operates the compressor 34 to perform the cold storage operation. And by the cooled cooler 29, the regenerator
Cool 28. As the temperature of the cold storage agent 28 decreases, the temperature of the temperature detection unit 38 of the cold storage agent 28 also decreases.

Further, when the cooling end temperature reaches T1 at time t1, the temperature determination means 42 detects that the temperature is lower than the set temperature and sends a signal. The compressor control means 44 receives the signal,
The compressor 34 is stopped and the cooling operation is stopped. After the cooling operation is stopped, the temperature of the temperature detection unit 38 rises and T2 (T2 (T2
-T1 is differential), the compressor 34 operates again to perform cooling operation.

In this way, the compressor 34 repeats ON / OFF to keep the cold storage agent 28 at a constant temperature. The rechargeable storage battery 46 is charged by the charger 45 during the cold storage operation. When the rechargeable storage battery 46 is almost fully charged, a signal from the charging end detection means 48 is sent out. Temperature determination means 42 at time t1
In response to the occurrence of both the signal from the charging completion detection means 48 and the signal from the charging end detection means 48, the cold storage completion means 49 determines that the cold storage operation has ended, and the cool storage completion display means 50 indicates to the user that the cold storage operation has been completed. At the same time, a signal is sent to the ventilation fan control means 47, and the ventilation fan control means 47 causes the ventilation fan 30 to move to T3.
(Time t3) is turned off, and T4 (time t4) is turned on to control the cold storage chamber 33 to an arbitrary set temperature, and the cold storage display means 51 informs the user that the cold storage is in progress. Then, the transport person puts the transportable goods 39 in the cool room 33, and at time t5, the power cord 40
Remove from the power supply and place it on a transportation truck etc. to transport it to the destination. At this time, the inside of the cool box main body 23 is cooled by the latent heat of fusion of the cool storage agent 28 and the ventilation fan control means 47, so that the temperature rise of the poor transport 39 can be prevented.

 Next, the cool mode mechanism will be described.

First, if the transportation person wants to quickly prepare the cold storage room 33, after inserting the power cord 40 at time t7, pressing the cold storage switch 52 enables the ventilation fan control means 47 to set the freezing mode even when the cold storage agent 28 is cold. By controlling the inside of the cool chamber 33 to an arbitrary set temperature by the same control, the temperature of the cool chamber 33 can be quickly lowered. In addition, when the transportation person wants to stop the cold storage operation, the cold storage switch 52 is pressed again at time t8 to stop, and the temperature control of the cold storage chamber 33 is stopped. And if you want to keep cool again, cool switch again at time t9
Press 52.

Next, the rechargeable storage battery overdischarge prevention mode function will be described.

The timer means 53, which has detected that the signal from the power input determination means 43 has turned off (time t5, t10), has detected that the power cord 40 has been unplugged and the commercial power has been turned off. ), The load of the rechargeable storage battery 46 (ventilation fan 30, etc.) is turned off. As a result, the unnecessary operation of the ventilation fan 30 after transportation can be automatically stopped, and useless discharge of the rechargeable storage battery 46 can be prevented.

As described above, according to this embodiment, the power input determining means 43
Detects that the commercial power input is turned on by the cooler 29 in the cooler 29, and the cool storage completion determining means 49 detects the completion of the cool storage, and then automatically operates the ventilation fan 30 to keep the cool room 33.
The freezing mode function to control the temperature to an arbitrary set temperature, and by pressing the cold insulation switch 52, the ventilation fan 30 is operated even during the cold storage of the cold storage agent 28 to control the cold storage chamber 33 to an arbitrary set temperature, and again during the cold storage. Cooling mode function to stop cooling by pressing the cooling switch 52, and ventilation fan 30 when commercial power input is OFF
The timer means 53 turns off the load on the rechargeable storage battery 46 after an arbitrary time while the cold storage room 33 is being controlled to an arbitrary set temperature.
With the rechargeable storage battery over-discharge prevention mode function,
When the cold storage agent 28 completes the cold storage, it can inform the transportation person.Furthermore, when the cold storage agent 28 completes the cold storage, the temperature of the cold storage chamber 33 is automatically controlled to an arbitrary set temperature. The cold storage type cool box 23 can be used only by putting in. Further, for example, when it is desired to use the cold storage cool box 23 immediately after the power is turned on, the cool storage switch 52 can be used in a short time by pressing the cool switch 52 after the power is turned on. In addition, the load on the rechargeable storage battery 46 is automatically turned off after an arbitrary time after the power is turned off.
It can be used for a long time without deterioration of performance.

It should be noted that, in the embodiment, the cold storage completion display means 50 and the cold storage display means 53 are not limited to display by lamps, LEDs, etc., but may be means for giving an alarm or the like within a range not deviating from the gist thereof.

Effect of the Invention As described above, the present invention divides the cool storage compartment and the cool storage compartment, which includes the cool storage that houses the cool storage agent and the cooler, and the cool storage compartment that cools the transported goods such as food. Insulation partition wall with ventilation holes, ventilation fan that operates only when the temperature of the cold storage room is controlled, rechargeable storage battery that supplies power to the ventilation fan to operate the ventilation fan, and temperature detection provided near the cool storage agent Temperature determination means for determining whether the temperature of the cold storage agent has fallen below a set value by inputting a signal from the unit, a charger for charging the rechargeable storage battery, and the end of charging of the rechargeable storage battery of the charger Of the charging end detecting means for detecting the temperature, the signal for judging the completion of the cold storage operation by inputting signals from the temperature judging means and the charging end detecting means, and a judgment of whether the commercial power source is input or not. Power input determination means Since it is equipped with a cooling switch that sets the operation and stop of the ventilation fan, anyone can easily confirm that the cold storage is completed, and the power input judgment means detects that the commercial power input is off and activates it. When the commercial power input is off, the ventilation fan is operating and the cold storage room is being controlled to an arbitrary set temperature when the commercial power input is OFF.The timer means turns off the load on the rechargeable storage battery after an arbitrary time to complete the charger. By preventing discharge, it becomes a cold storage type cold storage with high economic efficiency that allows the charger to be used for a long time.

In addition, the power input determining means detects that the commercial power input is turned on, and heat is stored in the cool storage by exchanging heat with the cooler, and the cool storage completion determining means detects the cool storage completion, and then automatically operates the ventilation fan. By controlling the cold storage room to an arbitrary set temperature and pressing the cold storage switch, the ventilation fan is operated even during the cold storage of the cold storage agent to control the cold storage room to an arbitrary set temperature, and the cold insulation switch is turned on again during cold storage. By stopping the cold insulation by pressing, the quality deterioration of the transported goods due to human error and the inability to use the cold storage are eliminated, and
The cold storage can be made available early.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing a freezing mode and a cold insulation mode of a cold storage type cold storage in one embodiment of the present invention, and FIG. 2 is a timing chart showing a rechargeable storage battery discharge prevention mode and a rechargeable storage battery overdischarge prevention mode, FIG. 3 is a timing chart showing a freezing mode and a rechargeable storage battery over-discharge prevention mode, FIG. 4 is a timing chart showing a cold insulation mode and a rechargeable storage battery over-discharge prevention mode, and FIG. 5 is a structure of a conventional regenerator FIG. 6 is a power supply circuit diagram of a conventional cold storage type cool box. 23 ... Cooling box body, 27 ... Cold storage room, 28 ... Cold storage agent, 29 ...
… Cooler, 30… Ventilation fan, 31… Insulation partition wall, 32…
… Ventilation hole, 42… Temperature judging means, 43… Power input judging means, 45… Charger, 46… Rechargeable storage battery, 48… Charging end detecting means, 49… Cold storage completion judging means, 52… … Cold insulation switch, 53 …… Timer means.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Junichi Nagai 3-22 Takada Hondori, Higashi-Osaka City, Osaka Prefecture Matsushita Refrigerating Machinery Co., Ltd. (56) Reference JP-A-1-318873 (JP, A) JP-A 1-318870 (JP, A) JP-A-2-85671 (JP, A)

Claims (2)

(57) [Claims] 1. A cold storage chamber (27) containing a cold storage agent (28) and a cooler (29), and a cold storage chamber (3) which cools a transported product such as food.
3), a cool box body (23), a heat insulation partition wall (31) for partitioning the cold storage chamber (28) and the cold storage chamber (33) and arranging a vent hole (32), and the cold storage chamber (31). 33) Ventilation fan (30) that operates only during temperature control, and the ventilation fan (30)
A rechargeable storage battery (46) for supplying electric power to the ventilation fan (30) and a signal from a temperature detecting section (38) provided in the vicinity of the cold storage agent (28) are input to the cold storage agent (46). 2
8) temperature determination means (42) for determining that the temperature has dropped below a predetermined value, a charger (45) for charging the rechargeable storage battery (46), and the rechargeable type of the charger (45) Cold storage operation by inputting signals from the charge end detection means (48) for detecting the end of charging of the storage battery (46), and the temperature determination means (42) and the charge end detection means (48). Cool storage completion determining means (49) for determining that the cooling has been completed
A power source input determining means (43) for determining whether or not a commercial power source is input, and a cold insulation switch (52) for setting the operation / stop of the ventilation fan (30), and the power source input determining means (43) Has a timer means (53) that detects when the commercial power input is turned off and operates, and when the commercial power is turned off,
During operation of the ventilation fan (30) to control the cold storage chamber (33) to an arbitrary set temperature, the timer means (53) turns off the load of the rechargeable storage battery (46) after an arbitrary time from turning off the commercial power supply. A cold storage type cold storage that is characterized by: 2. A power supply input judging means (43) detects that a commercial power supply input is turned on, and heat-exchanges the cold storage agent (28) with the cooler (29) to store cold, and the cold storage completion judging means. After the completion of cold storage is detected by (49), the ventilation fan (30) is automatically operated to control the cold room (33) to an arbitrary set temperature, and the cold switch (52) is pressed to cause the Even when the cold storage agent (28) is cold, the ventilation fan (30) is operated to control the cold storage chamber (33) to an arbitrary set temperature, and the cold storage switch (52) is pressed again during cold storage to keep cool. The cold storage cooler according to claim 1, wherein the cold storage is stopped.