JP2008070034A - Cooling box and its control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate wasteful energization to a condensation-preventing heater 5 provided in an opening rim 1a of an opening and closing door 4. <P>SOLUTION: The brown rice cooling box A is incorporated with a refrigerating cycle in a machine chamber 2 provided in a heat insulating box made cooler box body 1 upper part. Dew condensation of the opening rim 1a is prevented by heating of the condensation-preventing heater 5. The refrigerating cycle is automatically controlled on the basis of an internal temperature Ts such that a cooling box 1 interior is at a suitable temperature (12°C) to cool and store brown rice 3 in the cooling box body 1. When an outside air temperature becomes 12°C or lower and the 12°C or lower continues for an hour, energization to the condensation-preventing heater 5 and the refrigerating cycle are stopped. In such way, in an annual outside air temperature change as indicated in the figure, during the spring season and the autumn season, "automatic suspension (stopping)" and "automatic operation" are carried out equally, "automatic operation" is carried out during the summer season, and "automatic suspension" is carried out during the winter season, and driving of the refrigerating cycle and driving of the condensation-preventing heater 5 are efficiently carried out to carry out cooling without waste. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cool box that cools and stores dry matter such as rice bran and brown rice, and organisms such as vegetables and fruits, and a control method thereof.

As shown in FIG. 14, this type of cool box is usually provided with a machine room 2 at the top of a cool box body 1 made of a heat insulating box, and a refrigeration cycle is incorporated in the machine room 2. It is common to control the inside of the cool box body 1 to be a set temperature (appropriate temperature) T ₀ based on the temperature sensor to cool and store stored items such as the brown rice 3 in the cool box body 1 (Patent Literature). 1).
JP 2004-12037 A

  In this cool box A, generally, when the internal temperature (the temperature of the storage room of the cool box body 1) Ts is lower than the outside air temperature Tn, condensation occurs on the opening edge 1a where the door 4 of the cool box body 1 opens and closes. . For this reason, conventionally, a dew proof heater 5 is provided at the opening edge 1a, and the dew condensation is prevented by the heat generated by the dew proof heater 5.

  The dew proof heater 5 of the conventional cool box is one that is always energized or energized / deenergized by a manual switch. For this reason, even if the outside air temperature Tn becomes equal to or lower than the inside temperature Ts, and the dew condensation does not occur, the dew-proof heater 5 that is always energized continues to generate heat (because it continues to be energized). The energization of the dew proof heater 5 is wasted. Further, the operation of the dew-proof heater 5 that is manually energized / de-energized is troublesome, and wasteful energization of the dew-proof heater 5 due to forgetting to cut is easy.

For this reason, there is a technique in which the dew proof heater 5 is controlled based on the internal temperature Ts so as to eliminate unnecessary energization of the dew proof heater 5 (see Patent Document 2, claim 1 and the like).
However, according to this conventional technique, the dew proof heater 5 is energized / de-energized based on the internal temperature Ts, and there is a possibility that the dew proof by the dew proof heater 5 is not sufficiently performed. That is, normally, the condensation of the opening edge 1a of the cool box main body 1 occurs when the outside air temperature Tn is higher than the inside temperature Ts, and when the dew proof heater 5 is controlled based on the inside temperature Ts, the inside of the cool box (in the cool box main body 1). ) May be the temperature at which the energization of the dew proof heater 5 is stopped, the outside air temperature Tn may be equal to or higher than the internal temperature Ts. Condensation may occur.
JP 2001-21255 A

  This invention makes it a subject to eliminate useless energization to the above-mentioned dew-proof heater 5 while effectively preventing dew condensation on the opening edge 1a of the cool box main body 1.

To achieve the above object, the present invention is usually cool box is focused on a point within the refrigerator is automatically controlled to the set temperature T ₀ by the refrigeration cycle, first, the outside air temperature Tn is the set if the temperature T ₀ or less, it was to automatically stop the current supply to the anti-condensation heater 5.
In this way, the cold storage is automatically controlled so that the inside of the cold storage becomes the set temperature T ₀ by the refrigeration cycle, and the internal temperature Ts is maintained at about the set temperature T _0. When energization is stopped, the outside air temperature Tn is usually the same as or lower than the inside temperature Ts, and condensation is unlikely to occur. To be prevented. An example of this control is shown in the time chart shown in FIG. 1 when the outside air temperature Tn is a dotted line.

Next, in the cold storage, it is said that condensation occurs when a certain difference occurs between the outside air temperature Tn and the inside temperature Ts based on the heat insulating performance of the main body. For example, when the heat insulation performance of the cool box body (heat insulation box) is 5 ° C. and the internal temperature Ts is 12 ° C., condensation occurs when the outside air temperature Tn is 17 ° C. or higher.
This invention pays attention to that, and when the outside air temperature Tn becomes equal to or lower than the temperature (T ₀ + T ₁ ) obtained by adding the temperature T ₁ corresponding to the heat insulation performance of the cold storage body to the set temperature T ₀ , The energization to the dew proof heater 5 is automatically stopped. For example, in the case of T ₀ = 12 ° C. and T ₁ = 5 ° C., when Tn ≦ 17 ° C., the energization to the dew proof heater 5 is automatically stopped.
In this way, when the outside air temperature Tn becomes equal to or lower than the set temperature T ₀ , the dew proof heater can be used even when the outside air temperature Tn is higher by T ₁ ° C than when the energization to the dew proof heater 5 is automatically stopped. Since energization to 5 is automatically stopped, energization waste is eliminated (energy saving is achieved). This control example is shown in the case where the outside air temperature Tn is a broken line in the time chart shown in FIG.

Furthermore, the occurrence of condensation is also affected by the outside air humidity (ambient humidity). For example, when the ambient humidity is 75%, the relationship between the outside air temperature Tn and the dew point temperature (condensation temperature) Tm is as shown in Table 1 below, and the temperature difference (Tn−Ts) between the inside temperature Ts and the outside air temperature Tn is If the temperature difference between the outside air temperature Tn and the dew point temperature Tm (T ₂ = Tn−Tm) or more is reached, dew condensation will occur. For example, when the outside air temperature Tn is 30 ° C., the temperature difference (Tn−Ts) between the inside temperature Ts and the outside air temperature Tn is the temperature difference between the outside air temperature Tn and the dew point temperature Tm (T ₂ = 30 ° C.−25.1 ° C.). ) Or more ((Tn−Ts) ≧ 4.9 ° C.), dew condensation occurs.

The present invention pays attention to the occurrence of condensation based on this temperature difference T ₂ , and the outside air temperature Tn is equal to or lower than the temperature (T ₀ + T ₂ ) obtained by adding the temperature difference T ₂ (Tn−Tm) to the set temperature T _0. When this happens, the energization of the dew proof heater 5 is automatically stopped. Its _{T 2} are, for _example, T 0 = 12 ° _C., the case of _T 2 = 6 ° C., when it becomes Tn ≦ 18 ° C., automatically stops the energization of the anti-condensation heater 5.
In this way, when the outside air temperature Tn becomes equal to or lower than the set temperature T ₀ , the dew proof heater can be used even when the outside air temperature Tn is T ₂ ° C higher than when the energization to the dew proof heater 5 is automatically stopped. Since energization to 5 is automatically stopped, energization waste is eliminated (energy saving is achieved). This control example is shown in the time chart shown in FIG. 1 when the outside air temperature Tn is a two-dot chain line.
T ₂ may be determined each time (during judgment) based on the detected dew point temperature Tm. However, in consideration of the location, season, etc. where this cool box is installed (used), condensation may occur. The temperature which can be considered not to occur is set appropriately. For example, from Table 1 above, it is set to 5 ° C. or the like close to the average value.

This “temperature corresponding to heat insulation performance T ₁ ” and “temperature difference T ₂ between outside air temperature Tn and dew point temperature Tm” can be used in combination. That is, the outside air temperature Tn is above the set temperature _{T 0,} temperature _{T 1} of its sensed temperature Tn and the difference _{T 2} was added temperature between the dew point temperature Tm of the sensing time _(T 0 + T ₁ corresponding to the thermal insulation performance + T ₂ ) or less, the energization to the dew proof heater 5 can be automatically stopped. For example, when T ₀ = 12 ° C., T ₁ = 5 ° C., and T ₂ = 5 ° C., when Tn ≦ 22 ° C., the energization to the dew proof heater 5 is automatically stopped.
If it does in this way, since the advantage of both can be acquired, the further energy saving can be achieved. This control example is shown in the time chart shown in FIG. 1 when the outside air temperature Tn is a solid line.

The above is based on “when the internal temperature Ts becomes the set temperature T ₀ ” and considers “the temperature T ₁ corresponding to the heat insulation performance” and “the temperature difference T ₂ between the outside air temperature Tn and the dew point temperature Tm”. Although it is control, the “temperature T ₁ corresponding to the heat insulation performance” and the “temperature difference T ₂ between the outside air temperature Tn and the dew point temperature Tm” may not be uniquely determined depending on the structure of the cool box main body or the like. is there. For this reason, based on various configurations of the cool box body, the set temperature T ₀ , the set temperature T ₀ , the temperature T ₁ corresponding to the heat insulation performance of the cool box body, the sensed temperature Tn, and the dew point at the time of sensing. Various experiments and actual operations are performed between the temperature Tm and the temperature Tm plus the difference T ₂ (T ₀ + T ₁ + T ₂ ), and a constant temperature (fixed temperature) T _{3 at} which no condensation occurs is set. when it becomes the temperature T ₃ below, it may be configured to automatically stop the power supply to the anti-condensation heater 5. For example, when it is assumed that the set temperature T ₀ = 12 ° C. and T ₁ and T ₂ = 5 ° C., when T ₃ = 20 ° C. and the outside air temperature Tn ≦ 20 ° C., the energization to the dew-proof heater 5 is performed. Stop automatically. This control example is shown in the time chart shown in FIG. 1 when the outside air temperature Tn is a one-dot chain line.

  Each of the above thoughts (means) can be employed as a cold storage or a control method for the cold storage.

  As described above, the present invention stops the energization of the dew-proof heater 5 when the outside air temperature becomes a predetermined temperature or lower, so that the condensation at the opening edge of the cool box main body is effectively prevented while preventing the condensation. Unnecessary energization to the dew heater 5 can be eliminated.

As an embodiment of the present invention, a refrigeration cycle is attached to a cold storage body, and the refrigeration cycle is automatically controlled based on an internal temperature sensor so that the inside of the cold storage body becomes a set temperature T _0. It is possible to employ a configuration in which the dew-proof heater 5 is provided at the door opening edge of the cabinet body and the energization to the dew-proof heater 5 is automatically stopped when the sensed temperature Tn of the outside air temperature sensor becomes equal to or lower than the set temperature T _0. Yes (when the outside air temperature Tn in FIG. 1 is a dotted line).
The set temperature (appropriate temperature) T ₀ may be set as appropriate according to the stored product, but is, for example, 12 ° C. when the stored product is brown rice.

In this configuration, when considering the heat insulation performance of the cool box body, the temperature (T _{0) obtained} by adding the temperature T ₁ corresponding to the heat insulation performance of the cool box body to the set temperature T ₀ as the sensed temperature Tn of the outside air temperature sensor. + T ₁ ) or less, the energization to the dew proof heater 5 can be automatically stopped (when the outside air temperature Tn in FIG. 1 is a broken line).
When the dew point temperature Tm is taken into consideration, the detected temperature Tn of the outside air temperature sensor is set to the set temperature T ₀ , and the difference T ₂ (Tn−Tm) between the detected temperature Tn and the dew point temperature Tm at the time of the detection is calculated. When the temperature falls below the applied temperature (T ₀ + T ₂ ), the energization of the dew proof heater 5 can be automatically stopped (when the outside air temperature Tn in FIG. 1 is a two-dot chain line).
Furthermore, when considering the heat insulating performance and the dew point temperature Tm, the sensed temperature Tn of the outside air temperature sensor, to the set temperature T _0, temperature T ₁ and its sensed temperature Tn corresponding to the heat insulating performance of the refrigerator main body) and its When the temperature becomes equal to or lower than the temperature (T ₀ + T ₁ + T ₂ ) obtained by adding the difference T ₂ with the dew point temperature Tm at the time of sensing, the energization to the dew proof heater 5 can be automatically stopped (in FIG. 1). When the outside air temperature Tn is a solid line).

In these controls, as described above, when the “temperature T ₁ corresponding to the heat insulation performance” and the “temperature difference T ₂ between the outside air temperature Tn and the dew point temperature Tm” cannot be uniquely determined, the heat insulation performance is determined. Between the temperature T ₁ corresponding to the temperature T1 and the difference (Tn−Tm) between the sensing temperature Tn and the dew point temperature Tm at the sensing time (T ₀ + T ₁ + Tn−Tm) and the set temperature T ₀ when it becomes a constant temperature T ₃ below, to adopt a configuration for automatically stopping the power supply to the anti-condensation heater 5 (when the outside air temperature Tn in FIG. 1 is a dashed line).

Then, usually, if the outside air temperature Tn is less than the set temperature T _0, for fear less storage room is also raised to the set temperature T ₀ or more, if also stops driving of the refrigerating cycle, waste is not. For example, in the case of brown rice cold storage, the internal fan is synchronized with the refrigeration cycle, so if the refrigeration cycle stops, the internal fan also stops and the internal temperature decreases as the outside air temperature decreases. Time charts in which this control is applied to the above control examples are shown in FIGS. Incidentally, in a commercial refrigerator, the internal fan is always driven, and the internal fan is driven even when the refrigeration cycle is stopped. It does not necessarily drop with it.

However, even in the cold storage, even if the outside air temperature Tn becomes equal to or lower than the set temperature T ₀ due to the heat generated by stored life activities, the inside temperature Ts may not be the set temperature T ₀ .
Therefore, sensing the temperature Tn of the outdoor air temperature sensor becomes less than the set temperature T _0, under conditions set temperature T ₀ or less is continued for a certain time t of the sensed temperature Tn, the refrigeration cycle may be automatically stopped. This is because it can be determined that the internal temperature Ts does not increase under these conditions. If, if it exceeds the set temperature T ₀ refrigerator temperature Ts rises, by the detection, the refrigeration cycle performs a cooling function is driven to maintain the inside the refrigerator to the set temperature T ₀ or less.
The constant elapsed time t of the outside air temperature Tn may be appropriately set in consideration of the heat generated by the life activity of the stored item. For example, when the stored item is brown rice, it is set to, for example, one hour. .
Time charts in which this control is applied to the above control examples are shown in FIGS.

At this time, even if the detected temperature Tn of the outside air temperature sensor becomes equal to or lower than the set temperature T ₀ , the dew prevention heater 5 is automatically stopped together with the refrigeration cycle without stopping energization to the dew prevention heater 5. You can also do it. In this way, even if the sensed temperature Tn of the outside air temperature sensor becomes equal to or lower than the set temperature T ₀ , the refrigeration cycle continues to be driven and the inside of the compartment is cooled, and the inside temperature Ts is lowered from the outside air temperature Tn, causing condensation. Even if the temperature difference occurs, there is no risk of condensation due to energization of the dew-proof heater 5. A time chart of this control is shown in FIG.

The contents of the embodiments of these inventions can be the contents of the control method of the cold storage. That is, in the control method of the cool box that automatically controls the refrigeration cycle attached to the cool box body based on the inside temperature sensor so that the inside of the cool box body becomes the set temperature T ₀ , the outside air temperature Tn is the above set temperature. When the temperature becomes T ₀ , the temperature T ₀ + T ₁ , the temperature T ₀ + T ₁ + T ₂ , or the temperature T ₃ or lower, the power supply to the dew proof heater 5 is automatically stopped.
In that configuration, the outside air temperature Tn becomes less than the set temperature T _0, or if the setting of the outside air temperature Tn temperature T ₀ or less is continued for a certain time t, the refrigerating cycle so as to automatically stop,
Furthermore, the dew-proof heater 5 can be automatically stopped along with the stop of the refrigeration cycle.

  This embodiment relates to the brown rice cooler A shown in FIG. 14, similarly, a machine room 2 is provided on the upper part of the cool box body 1 made of a heat insulating box, and a refrigeration cycle is incorporated in the machine room 2. . The internal fan (not shown) is stopped when the refrigeration cycle is stopped (when the compressor is stopped) in synchronization with the refrigeration cycle. Even inside, the internal humidity is about 60%. By maintaining the internal humidity at about 60%, the stored brown rice 3 is maintained at a moisture content of about 15%.

  This cool box A is also provided with a dew-proof heater 5 at the opening edge 1a of the cool box body 1 that is opened and closed by the door 4, and the dew condensation is prevented by the heat generated by the dew-proof heater 5. In addition, an outside air temperature sensor (not shown) is provided at an appropriate location on the outer surface of the cool box main body A, and an inside temperature sensor (not shown) is provided inside the cool box body A (store room). The arrangement of the dew proof heater 5 is preferably the entire circumference of the opening edge 1a of the cool box body 1, but may be partial.

The dew-proof heater 5, the outside air temperature sensor, and the inside temperature sensor are connected to a controller (not shown) of the refrigeration cycle, and the controller cools the refrigeration cycle based on the inside temperature sensor. Automatic control is performed so that the inside of the main body 1 becomes a set temperature (appropriate temperature) T _0, and the brown rice 3 in the cool box main body 1 is cooled and stored. The set temperature T ₀ is, for example, 12 ° C.

Further, the controller, as shown in FIG. 12, if the sensed temperature Tn of the outside air temperature sensor which becomes less than the set temperature T _0, and continues its sensed temperature Tn of the set temperature T ₀ or less a predetermined time t, anti-condensation The energization to the heater 5 is automatically stopped. In addition, the refrigeration cycle automatically stops along with the stop of energization of the dew proof heater 5. The duration t is, for example, 1 hour.

  In this embodiment, for example, when the outside air temperature changes in the year as shown in FIG. 13, “automatic suspension (stop)” and “automatic operation” are halved in “spring season” and “autumn season” “Summer season” is “automatic operation” and “winter season” is “automatic suspension”, so that the refrigeration cycle and the dew-proof heater 5 are efficiently driven and de-energized (energized / de-energized) without waste. Cold storage can be performed.

In this embodiment, when the outside air temperature Tn becomes equal to or lower than the set temperature T ₀ , the energization to the dew proof heater 5 is automatically stopped regardless of the driving of the refrigeration cycle, or the outside air temperature Tn is set to the set value. if the temperature T ₀ or less, automatically stops the power supply to the anti-condensation heater 5, from its de-energized, if the setting of the outside air temperature the temperature T ₀ or less is continued for a certain time t, the refrigeration cycle so as to automatically stop You can also.

In addition, various controls can be performed in consideration of the temperature T ₁ corresponding to the heat insulating performance of the cold storage, and the difference T ₂ between the outside air temperature and the dew point temperature. For example, the temperature difference between the outside air temperature Tn that automatically stops energization of the dew proof heater 5 and the set temperature T ₀ is 8 degrees. That is, when the set temperature T ₀ is set to 12 ° C., the energization to the dew proof heater 5 is automatically stopped when the outside air temperature Tn becomes 20 ° C. or less.

The embodiment was in the case of a brown rice cooler, but the present invention can of course be employed in other coolers, for example, a straw cooler, a vegetable cooler, a fruit cooler, etc. The set temperature T ₀ and the predetermined time t are appropriately determined according to the items (stored items) to be put in each cool box. For example, in _{vegetables, T} 0 = 0 ° C., the fruit (apples, _oranges), and _T 0 = 0 ° C. and the like.

Time chart of one embodiment Time chart of another embodiment Time chart of another embodiment Time chart of another embodiment Time chart of another embodiment Time chart of another embodiment Time chart of another embodiment Time chart of another embodiment Time chart of another embodiment Time chart of another embodiment Time chart of another embodiment Time chart of another embodiment Action diagram of one embodiment Perspective view showing an example of cold storage

Explanation of symbols

1 Cold storage body 1a Door opening edge 2 Machine room 3 Brown rice (stock)
4 Opening / closing door 5 Dew-proof heater A Cold storage

Claims (16)

A cold storage (A) in which a refrigeration cycle is attached to the cold storage body (1), and the refrigeration cycle is automatically controlled based on an internal temperature sensor so that the inside of the cold storage body (1) is at a set temperature (T ₀ ). In
A dew-proof heater (5) is provided at the door opening edge (1a) of the cool box body (1), and when the temperature (Tn) sensed by the outside temperature sensor becomes equal to or lower than the set temperature (T ₀ ), the dew-proof A cool box that automatically stops energization of the heater (5). A cold storage (A) in which a refrigeration cycle is attached to the cold storage body (1), and the refrigeration cycle is automatically controlled based on an internal temperature sensor so that the inside of the cold storage body (1) is at a set temperature (T ₀ ). In
A dew-proof heater (5) is provided at the door opening edge (1a) of the cool box body (1), and the sensed temperature (Tn) of the outside air temperature sensor is set to the set temperature (T ₀ ) of the cool box body (1). A cool box that automatically stops energization of the dew-proof heater (5) when the temperature (T ₀ + T ₁ ) equal to or lower than the temperature (T ₁ ) corresponding to the heat insulation performance is reached. . A cold storage (A) in which a refrigeration cycle is attached to the cold storage body (1), and the refrigeration cycle is automatically controlled based on an internal temperature sensor so that the inside of the cold storage body (1) is at a set temperature (T ₀ ). In
A dew-proof heater (5) is provided at the door opening edge (1a) of the cool box main body (1), and the sensed temperature (Tn) of the outside air temperature sensor is set to the set temperature (T ₀ ). And dew point temperature (Tm) difference (T ₂ = Tn-Tm) plus (T ₀ + T ₂ ) or less when the temperature is less than (T ₀ + T ₂ ), the energization of the dew proof heater (5) is automatically stopped A cool box characterized by that. A cold storage (A) in which a refrigeration cycle is attached to the cold storage body (1), and the refrigeration cycle is automatically controlled based on an internal temperature sensor so that the inside of the cold storage body (1) is at a set temperature (T ₀ ). In
A dew-proof heater (5) is provided at the door opening edge (1a) of the cool box body (1), and the temperature (Tn) of the outside air temperature sensor is set to the set temperature (T ₀ ). ) And a temperature (T ₀ + T ₁ + T) obtained by adding a temperature (T ₁ ) corresponding to the thermal insulation performance of T) and a difference (T ₂ = Tn−Tm) between the detected temperature (Tn) and the dew point temperature (Tm) at the time of the detection. ₂ ) A cool box that automatically stops energization of the dew-proof heater (5) when the temperature falls below. A cold storage (A) in which a refrigeration cycle is attached to the cold storage body (1), and the refrigeration cycle is automatically controlled based on an internal temperature sensor so that the inside of the cold storage body (1) is at a set temperature (T ₀ ). In
A dew-proof heater (5) is provided at the door opening edge (1a) of the cool box body (1), and the temperature (Tn) of the outside air temperature sensor is set to the set temperature (T ₀ ). ) And a temperature (T ₀ + T ₁ + T) obtained by adding a temperature (T ₁ ) corresponding to the thermal insulation performance of T) and a difference (T ₂ = Tn−Tm) between the detected temperature (Tn) and the dew point temperature (Tm) at the time of the detection. ₂ ) and the set temperature (T ₀ ), the energization to the dew-proof heater (5) is automatically stopped when the temperature becomes equal to or lower than a predetermined temperature (T ₃ ). Cold storage. The cold storage according to any one of claims 1 to 5, wherein the refrigeration cycle is automatically stopped when a sensed temperature (Tn) of the outside air temperature sensor becomes equal to or lower than the set temperature (T ₀ ). Warehouse. The outside air temperature sensor sensing the temperature (Tn) becomes less than the set temperature (T _0), if the set temperature of the sensed temperature (T ₀₎ following has continued for a certain time (t), so as to automatically stop the refrigeration cycle The cool box according to any one of claims 1 to 5, wherein the cool box is made. A cold storage (A) in which a refrigeration cycle is attached to the cold storage body (1), and the refrigeration cycle is automatically controlled based on an internal temperature sensor so that the inside of the cold storage body (1) is at a set temperature (T ₀ ). In
A dew-proof heater (5) is provided at the door opening edge (1a) of the cold storage body (1), and the sensed temperature (Tn) of the outside air temperature sensor is equal to or lower than the set temperature (T ₀ ), and the sensed temperature (Tn) When the temperature is equal to or lower than the set temperature (T ₀ ) for a certain time (t), the energization to the dew proof heater (5) is automatically stopped and the refrigeration cycle is also automatically stopped. Warehouse. Control method of the cold storage (A) which automatically controls the refrigeration cycle attached to the cold storage main body (1) based on the internal temperature sensor so that the inside of the cold storage main body (1) becomes the set temperature (T ₀ ). In
When the outside air temperature (Tn) becomes equal to or lower than the set temperature (T ₀ ), the energization to the dew-proof heater (5) provided at the door opening edge (1a) of the cool box body (1) is automatically stopped. A control method for a cold storage, characterized by being made. Control method of the cold storage (A) which automatically controls the refrigeration cycle attached to the cold storage main body (1) based on the internal temperature sensor so that the inside of the cold storage main body (1) becomes the set temperature (T ₀ ). In
When the outside air temperature (Tn) is equal to or lower than the temperature (T ₀ + T ₁ ) obtained by adding the temperature (T ₁ ) corresponding to the heat insulation performance of the cold storage body (1) to the set temperature (T ₀ ), A method for controlling a cool box, wherein energization to a dew proof heater (5) provided at a door opening edge (1a) of the cool box body (1) is automatically stopped. Control method of the cold storage (A) which automatically controls the refrigeration cycle attached to the cold storage main body (1) based on the internal temperature sensor so that the inside of the cold storage main body (1) becomes the set temperature (T ₀ ). In
Outside air temperature (Tn) is above the set temperature _{(T 0),} the temperature _{(T 0} plus the difference _(T 2 = Tn-Tm) of the sensed temperature and (Tn) and its sensing when the dew point temperature (Tm) + T ₂ ) or less, the energization of the dew proof heater (5) provided at the door opening edge (1a) of the cool cooler main body (1) is automatically stopped. Control method. Control method of the cold storage (A) which automatically controls the refrigeration cycle attached to the cold storage main body (1) based on the internal temperature sensor so that the inside of the cold storage main body (1) becomes the set temperature (T ₀ ). In
The outside air temperature (Tn) is equal to the set temperature (T ₀ ), the temperature (T ₁ ) corresponding to the heat insulation performance of the cool box body (1), the sensed temperature (Tn), and the dew point temperature (Tm) at the time of sensing. ) And the temperature difference (T ₀ + T ₁ + T ₂ ) plus the difference (T ₂ = Tn−Tm) and the dew-proof heater provided at the door opening edge (1a) of the cool box body (1) (5) A method for controlling a cool box, wherein the energization to (5) is automatically stopped. Control method of the cold storage (A) which automatically controls the refrigeration cycle attached to the cold storage main body (1) based on the internal temperature sensor so that the inside of the cold storage main body (1) becomes the set temperature (T ₀ ). In
The outside air temperature (Tn) corresponds to the set temperature (T ₀ ), the temperature (T ₁ ) corresponding to the heat insulation performance of the cool box body (1), the sensed temperature (Tn), and the dew point temperature (Tm) at the time of sensing. When the temperature becomes equal to or lower than a certain temperature (T ₃ ) between the temperature (T ₀ + T ₁ + T ₂ ) added with the difference (T ₂ = Tn−Tm) and the set temperature (T ₀ ), A method for controlling a cool box, wherein energization to a dew proof heater (5) provided at a door opening edge (1a) of the cool box body (1) is automatically stopped. The cold storage control method according to any one of claims 9 to 13, wherein the refrigeration cycle is automatically stopped when the outside air temperature (Tn) becomes equal to or lower than the set temperature (T ₀ ). The outside air temperature (Tn) becomes less than the set temperature (T _0), if the sensed temperature of the set temperature (T ₀₎ following a predetermined time (t) continues, that it has to be automatically stopped the refrigeration cycle The method for controlling a cool box according to any one of claims 9 to 13. Control method of the cold storage (A) which automatically controls the refrigeration cycle attached to the cold storage main body (1) based on the internal temperature sensor so that the inside of the cold storage main body (1) becomes the set temperature (T ₀ ). In
When the outside air temperature (Tn) is equal to or lower than the set temperature (T ₀ ) and the outside air temperature (Tn) is kept below the set temperature (T ₀ ) for a certain time (t), the door opening of the cool box body (1) is opened. A method for controlling a cool box, wherein the energization of the dew proof heater (5) provided at the edge (1a) is automatically stopped and the refrigeration cycle is also automatically stopped.

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