JP3088959U - Transport vehicles to prevent condensation - Google Patents

Abstract

(57) [Summary] An object of the present invention is to transport articles to be transported while maintaining them at a predetermined temperature or higher, and to surely prevent dew condensation from occurring at the destination of the articles. Space (2)
A loading chamber (1) for keeping articles warm in the heat retaining space (2), a heating means (3) for heating air to be sent into the heat retaining space (2), and a heating means (3). )
A discharge unit (5) for discharging the warm air generated by the warming space (2), a temperature detecting means (7) for detecting a temperature in the warming space (2), and a warming space (2). Humidity detecting means (8) for detecting the humidity in the parentheses);
The temperature of the article is calculated based on the temperature detected by the temperature detecting means (7) and the humidity detected by the humidity detecting means (8), and the temperature of the article is maintained at or above the dew condensation preventing temperature at the time of carrying in. Control means (9) for controlling the heating means (3).

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a transportation vehicle that keeps articles warm, and more particularly to a transportation vehicle that prevents condensation that may occur in precision equipment being transported.

[0002]

[Prior art]

 When goods, such as precision equipment, are transported to their destinations during cold weather or in cold areas, these goods are kept in a low-temperature environment for a relatively long time, so the temperature of these goods themselves is low. Is considerably lower. Therefore, when the articles are transported in this state and brought into a room having a relatively high temperature, the air around these articles is rapidly cooled, and dew condensation occurs. The minimum temperature at which dew condensation does not occur with respect to the indoor temperature and humidity is called the dew condensation prevention temperature.

[0003] The occurrence of condensation not only causes malfunctions that prevent normal operation when an article is a precision device sensitive to moisture, but also increases the risk of electric leakage. For this reason, users cannot use these items until the condensation has completely dried, even if the items are transported.

In such a situation, it is desired to reliably prevent dew condensation. However, for transportation in a low-temperature environment, in order to reduce the occurrence of dew condensation of the precision equipment, a constant-temperature space is simply provided in a storage location. However, the only measures taken were to keep the goods warm and to raise the temperature of the goods themselves to be transported in advance. According to this method, the temperature of the article itself does not decrease even if it touches some cold air when loading the article from the storage location into the transport vehicle, so that the occurrence of dew condensation can be reduced when the article is installed at the destination.

[0005] On the other hand, with respect to the generated dew, after the goods are loaded and installed, the inside of each of the goods is inspected by the individual and a service engineer, and the dew condensation generated on these goods is removed using a drier or the like. The method has been taken. According to this method, a part of the article is usually removed by each service engineer, and the condition of the article is confirmed, so that dew condensation can be flexibly removed according to the condition.

[0006]

[Problems to be solved by the invention]

 However, as described above, the following problems occur when goods are transported by transport vehicles that do not keep dew condensation measures while keeping the heat only at the storage location.

In general, articles such as precision instruments are sometimes loaded on a transportation vehicle before the date of transportation due to problems such as transportation efficiency. Thus, if the goods to be transported are loaded on the transport vehicle before the date of transport, they will be stored on the cold transport vehicle's bed at night. Therefore, by the time this article is installed at the loading location on the day of transportation, the temperature of the article itself will be lower than the dew condensation prevention temperature. Also, even if the goods are loaded on a transport vehicle on the day, if the goods are transported over a long period of time, these goods can be maintained at a temperature above the dew condensation prevention temperature until they are brought in simply by keeping them warm at the storage location. Can not do it.

[0008] Furthermore, in consideration of the environment, the articles are often loaded on a transport vehicle with the packaging material that is a waste material removed. The temperature of these articles themselves tends to be low.

As a result, dew condensation occurs on the article when it is carried in. That is, even if the goods transported only at the storage location are kept warm, dew condensation cannot be clearly prevented. Also, the decondensing work by the service engineer can flexibly deal with transported goods, but may include human error.

[0010] As described above, in order to generate the dew condensation, not only the transportation but also the worker who processes the dew condensation generated on the article is required. A considerable amount of time and cost will be spent. Therefore, it is one of the most important issues when transporting precision equipment and other products in such low-temperature environments that dew condensation does not occur. One of the most important issues is to prevent the occurrence of dew condensation in low-temperature environments. Transport is needed.

[0011] In view of the above circumstances, the present invention transports articles while keeping them at a predetermined temperature or higher so that dew condensation does not occur even if the articles to be transported are exposed to some cold air, and is carried into these articles. The purpose is to surely prevent dew condensation from occurring first.

[0012]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a transport vehicle for preventing dew condensation according to the present invention has a heat-insulating space that is openably and closably sealed, and a loading room that keeps articles warm in the heat-insulating space; Heating means for heating the air to be sent into the inside, a discharge unit for discharging hot air generated by the heating means to the heat retaining space, temperature detecting means for detecting a temperature in the heat retaining space, Humidity detecting means for detecting the humidity in the heat retaining space, and the temperature of the article is calculated based on the temperature detected by the temperature detecting means and the humidity detected by the humidity detecting means. And control means for controlling the heating means so that the temperature is kept at or above the dew condensation preventing temperature at the time of entry. This control means calculates the temperature of the article to be transported on the basis of the indoor air dew point temperature table. By adopting such a configuration, the article itself is prevented from dew condensation so that no dew condensation occurs on the transported article. The product can be transported while maintaining the temperature or higher, and when the product is carried in, dew condensation on the product can be reliably prevented. Therefore, the user can use the goods immediately after the goods are carried in. In addition, it is possible to shorten the transportation and loading time for one article, and to increase the transportation efficiency of the article.

Preferably, a heat insulating material is provided in at least a part of the heat retaining space.

As described above, when the heat insulating material is provided, the transport vehicle can transport while keeping the temperature of the heat retaining space and the outside air temperature at a maximum difference of 30 ° C. This means that, for example, when the outside air temperature is −10 ° C., the temperature of the loading platform can be kept at 20 ° C.

[0015] Preferably, a shielding curtain is provided inside the opening / closing portion of the heat retaining space, and further, a gate having a size corresponding to the opening / closing portion of the heat retaining space is further provided. More preferably, the gate is made of aluminum.

[0016] As described above, when the shielding curtain is provided, when the heat retaining space is opened, for example, when loading / unloading articles, ventilation with the low-temperature outside air is significantly reduced. . In addition, by installing the gate, the work space for loading / unloading goods to be transported is not unnecessarily widened, and the work is performed only by being partially opened. Can be. Therefore, the transport vehicle provided with these shielding curtains and / or gates has an effect of minimizing heat loss in the heat retaining space during loading / unloading of articles.

Further, by making the gate made of aluminum, it is possible to reduce the weight and increase the size to easily secure a relatively large space.

[0018] More preferably, a light is provided in the heat retaining space.

In this light, the heat insulation space is sealed to prevent loss of heat, and the inside of the heat insulation space can be brightened so that work can be performed even when the space is dark. . Preferably, the light is embedded in the ceiling of the heat retaining space. With this configuration, it is possible to prevent the light from being accidentally damaged during work in the heat retaining space.

The loading room having the same configuration as that of the present invention provided on the carrier of the transportation vehicle as described above may be applied to other transportation means such as land transportation, sea transportation, and air transportation.

[0021]

[Embodiment of the invention]

 FIG. 1 is a schematic side view of a transport vehicle according to an embodiment of the present invention. Reference numeral 1 denotes a loading chamber having a heat insulation space 2 which is closed and opened freely, and in which heat is kept in the heat insulation space 2. The loading room 1 is provided on the carrier of the transport vehicle, and has a substantially rectangular parallelepiped outer shape. At the bottom of the transportation vehicle, a pre-heater 3 as a heating means for keeping the heating space 2 warm, and a charger 4 located near the pre-heater 3 are provided. This preheater 3 has a thermostat for detecting the water temperature of the radiator. Further, on both front sides on the upper side in the heat retaining space 2, two discharge portions 5 connected to the pre-heater 3 via pipes (not shown) are provided. Further, the preheater 3 is connected to the charger 4 by a cable (not shown) for supplying power from the charger 4. The number and position of the discharge units 5 may be appropriately changed in consideration of the convection efficiency of heat in the heat retaining space 2.

FIG. 2 is a schematic top view of the transport vehicle according to one embodiment of the present invention. As can be seen from this figure, a digital thermometer 7 and a digital hygrometer 8 as means for detecting the temperature and humidity in the heat insulation space 2 and the preheater 3 are controlled in the cab 6 of the transport vehicle. A control unit 9 is provided as control means for performing the control. These instruments have a temperature / humidity setting, preferably they have an automatic control function as well as a timer.

Further, side doors 10 through which precision instruments to be transported can be taken in and out are preferably provided on both sides of the loading chamber. In the present embodiment, these side doors 10 are openable doors having different sizes from each other, but may be sliding doors or have the same size.

The rear surface of the heat retaining space 2 is entirely open, and the opening is provided with a double door 11 that can be opened and closed one by one. Further, a plurality of embedded fluorescent lamps 12 are provided as lights on the upper surface in the heat retaining space 2. In the present embodiment, the five fluorescent lamps 12 are arranged in two rows so as to be staggered. However, it is sufficient that work can be performed even when the inside of the heat retaining space 2 is sealed. Not limited.

FIG. 3 is a schematic rear view of the transportation vehicle according to the embodiment of the present invention, in which the right side shows a state where a curtain is installed, and the left side shows a state where the curtain is not installed. ing. A heat insulating board 13 covering the entire surface as a heat insulating material is placed on the inner upper surface, side surface, and front surface of the heat retaining space 2. A member 13 such as plywood veneer is stretched inside the heat insulation board 13, and a felt sheet 15 is adhered inside the member 13. Preferably, the insulation board 13 has a thickness of 20 to 35 mm, the veneer 11 has a thickness of 5.5 to 6 mm, and the felt sheet 15 has a thickness of about 5 mm. These heat insulating materials are also provided inside the double door 11 and the side door 10.

A curtain 16 made of a material having a heat insulating effect, such as vinyl, is provided as a heat shielding curtain on the rear surface of the opening of the heat retaining space 2. The curtain 16 is separated at the center, and covers the opening as much as possible even when the double door 11 is open.

FIG. 4 is a diagram schematically showing the gate 17 provided at the rear of the transportation vehicle according to one embodiment of the present invention. The gate 17 is provided with a gate 17 connected to be openable and closable by a support member 18 (see FIG. 1). A panel 20 is mounted in a gap between the gate 17 and the floor 19 of the heat storage space 2. The panel 20 has one side of the double door 11, that is, approximately half the size of the gate 17, and can be mounted with one side of the double door 11 opened.

FIG. 5 is an indoor air dew point temperature table showing the dew condensation prevention temperature. The vertical axis indicates the temperature (° C.) in the room into which the article is carried, and the horizontal axis indicates the humidity (%) in the room. ing. The details of this figure are described below.

Hereinafter, the operation of the above configuration will be described with reference to FIGS. Precision equipment, such as copiers and printers, that were placed in storage areas such as warehouses, are loaded onto transport vehicles for transport to destinations. For transportation in a low temperature environment, these precision instruments are kept warm in the storage location. The heat insulation space 2 of the transport vehicle is pre-warmed, and the precision equipment that has been kept warm at the storage location during loading does not cause condensation.

The loading of the precision equipment is usually performed with the double door 11 opened, and the gate 17 is opened by the support member 13 until the gate 17 is parallel to the floor of the heat retaining space 2. When the double door 11 is opened on only one side, the panel 20 between the gate 17 and the heat retaining space 2 is used on only one side corresponding to the door 11. When the double door 11 is opened, the opening of the heat retaining space 2 is opened. However, since the opening is covered by the curtain 16, the heat loss in the heat retaining space 2 is reduced even during the loading operation. Few . In the case of unloading, the reverse operation is performed.

When the articles to be transported are lightweight devices or small devices, these devices can be taken in and out of the side doors 10 without using the double doors 11. By this operation, the opening and closing time of the door is short, and the opening area of the heat retaining space 2 is small, so that heat loss in the heat retaining space 2 during loading / unloading work is small.

The work other than loading / unloading, which does not require opening / closing the door, is performed with the heat retaining space 2 sealed to reduce heat loss. When the work is performed in the closed heat retaining space 2, the fluorescent lamp 12 is turned on, and the work can be always performed in a bright state.

The precision equipment may be housed in a packing material or may have been removed in advance so as to reduce waste at the destination. In this case, it is preferable that these devices are wrapped in an electric blanket, a heat insulating sheet, or the like.

[0034] Experiments have shown that in general, the condensation that forms in such precision equipment is largely related to the temperature and humidity of the room into which the equipment is carried, as well as the temperature of the article itself. As shown in FIG. 5, for example, when the precision equipment is carried into a room at a room temperature of 26 ° C. and a humidity of 30%, the temperature of the equipment itself is 7.1 ° C. or less (condensation prevention temperature) at the time of carry-in. It has been shown that condensation results in condensation. According to an experiment under the same conditions, the temperature of the precision instrument itself was kept at 20 ° C., and when this instrument was installed in an environment of −10 ° C., the temperature of the condensation prevention temperature was 7 ° C. The results show that it takes 5 hours and 34 minutes to drop to 1 ° C. The temperature in the heat retaining space 2 is set in consideration of such data.

In setting the heat retention temperature in the heat retention space 2, first, the time required from loading to the destination is calculated. Next, based on the indoor air dew point temperature table shown in FIG. 5, the temperature of the device itself required to maintain the dew condensation prevention temperature or more when the precision device is carried in is calculated. Then, the temperature in the heat retaining space 2 is determined, and the pre-heater 3 is driven according to this temperature.

The pre-heater 3 is operated by the function of a thermostat for detecting a water temperature, and is burned only when the cooling water temperature of the radiator becomes lower than a certain value. The pre-heater 3 is controlled so as to be automatically stopped when the water temperature reaches a certain temperature. Further, the driving time of the preheater 3 can be set by a timer.

The air warmed by the preheater 3 flows into the discharge section 5 through the pipe, and is jetted from the discharge section 5 as warm air in the direction of the arrow in FIG. You. By this injection, the air in the heat retaining space 2 is naturally circulated. However, in the heat retaining space 2, the discharged hot air may be circulated using, for example, a fan.

The inside of the heat retaining space 2 is provided with a front surface, side surfaces, and side surfaces, and a heat insulating board 13, a plywood plywood 14, and a felt sheet 15 provided at each door. The internal temperature heated by the pre-heater 3 does not easily decrease. The preheater 3 is driven by the engine while the transport vehicle is running, and is driven by the charger 4 when the transport vehicle is stopped.

The material, installation position, and thickness of the heat insulating material may be changed without being limited to the above as long as they are within the scope of the present invention.

[0040]

[Effect of the invention]

 As described above, in the transport vehicle for preventing dew condensation according to the present invention, the heat insulation space provided on the cargo bed is warmed, and the temperature of the precision equipment loaded here becomes higher than the dew condensation prevention temperature at the time of loading. It is kept warm. Therefore, even when transported in a low-temperature environment, it is possible to reliably prevent dew condensation from occurring in these precision equipment at the destination.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a transportation vehicle according to an embodiment of the present invention.

FIG. 2 is a schematic top view of the transportation vehicle according to the embodiment of the present invention.

FIG. 3 is a schematic rear view of the transportation vehicle according to the embodiment of the present invention, in which the right side shows a state where a curtain is installed, and the left side shows a state where the curtain is not installed.

FIG. 4 is a diagram schematically illustrating a gate provided at a rear portion of the transportation vehicle according to the embodiment of the present invention.

FIG. 5 is an indoor air dew point temperature table showing dew condensation prevention temperatures.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 loading room 2 heat retaining space 3 preheater 4 charger 5 discharge unit 6 cab 7 digital thermometer 8 digital hygrometer 9 control unit 10 side door 11 double door 12 fluorescent lamp 13 heat insulation board 14 plywood plywood 15 felt sheet 16 curtain 17 gate 18 support member 19 floor 20 panel

Claims (7)

[Utility model registration claims] A heating chamber for heating an article to be sent into the heat retaining space; a loading chamber for keeping an article in the heat retaining space; A discharge section for discharging the generated hot air to the heat retaining space; a temperature detecting means for detecting a temperature in the heat retaining space; a humidity detecting means for detecting a humidity in the heat retaining space; Calculate the temperature of the article based on the temperature detected by the temperature and the humidity detected by the humidity detecting means,
Control means for controlling the heating means so that the temperature of the article is maintained at or above the dew-condensation prevention temperature at the time of carry-in. 2. The transport vehicle for preventing dew condensation according to claim 1, wherein said control means calculates the temperature of the article to be transported from an indoor air dew point temperature table. 3. At least a part of the heat retaining space,
The transport vehicle for preventing dew condensation according to claim 1 or 2, wherein a heat insulating material is provided. 4. Inside the opening and closing part of the heat retaining space,
The transport vehicle for preventing dew condensation according to any one of claims 1 to 3, further comprising a shielding curtain. 5. The transport vehicle for preventing dew condensation according to claim 1, further comprising a gate having a size corresponding to an opening / closing portion of the heat retaining space. 6. The transportation vehicle according to claim 5, wherein the gate is made of aluminum. 7. The transport vehicle for preventing dew condensation according to claim 1, wherein a light is provided in the heat retaining space.