JP6829709B2 - Floor heater device - Google Patents

Description

The present invention relates to a floor heater device for preventing freezing of the entrance / exit floor surface of a freezing / refrigerating warehouse.

Conventionally, in a frozen / refrigerated warehouse (hereinafter, simply referred to as a warehouse) for storing frozen / refrigerated cargo, workers carry in / out the cargo using a trolley or a material handling vehicle (hereinafter, also referred to as a forklift). .. At this time, if the floor surface of the warehouse entrance / exit is frozen or dew condensation, the dolly or forklift slips and the straight running stability is impaired, and there is a risk of collision with the warehouse entrance / exit.

For this reason, a method is used in which a heater for preventing freezing (for example, an electric heater) is embedded in the lower part of the floor surface of the entrance / exit of the warehouse to prevent the concrete floor surface above the freezing. However, the heater may break down or the electric wire that supplies electric power to the heater may be broken due to vibration of a dolly or a forklift traveling on the upper part. In addition, the heater is a consumable item and needs to be replaced regularly in order to maintain the normal function of the heater. In order to replace / repair the electric wires that supply power to the heaters and heaters buried under the concrete floor surface, it is necessary to chip the concrete on the floor surface, replace / repair the heaters and electric wires, and then cast the concrete again. Not only does the construction work become large-scale, but the construction period and costs also increase.

For this reason, a pedestal with multiple floor heaters is fixed to the floor of the freezer, covered with a protective cover from above the pedestal, and the upper surface of the protective cover and the floor of the refrigerator are flush with each other. Disclosed is an antifreeze device at the periphery of the freezer opening in a freezer fixed so as to (see Patent Document 1).

Japanese Unexamined Patent Publication No. 9-133452

The antifreeze device at the peripheral edge of the storage port of Patent Document 1 described above is easy to maintain and replace the floor heater, wiring, and the like. However, mainly in small freezers used for business purposes, the strength is sufficient to withstand the load when workers carry in and out luggage by trolleys, etc., and in large freezer / cold storage warehouses, forklifts are used. Since the load is carried in and out, there is a problem in durability in the configuration as in Patent Document 1.

Furthermore, the conventional method of burying a heater for anti-freezing in the concrete on the floor of the entrance / exit of a large freezing / refrigerating warehouse has sufficient strength to carry in / out luggage by a forklift, but the heater and electric wires The replacement requires a large-scale construction, which increases the construction period and cost.

In order to solve the above problems, the present invention can sufficiently withstand the load of a forklift (including luggage) passing over the floor surface of the entrance / exit of a large freezing / refrigerating warehouse, and powers the heater and the heater. It is an object of the present invention to provide a floor heater device that can easily replace and repair the electric wire that supplies the electric power.

In order to achieve the above object, the present invention presents an obstacle to the traveling of the cargo handling vehicle when the cargo is carried in and out by the cargo handling vehicle in a freezing / refrigerating warehouse for storing and storing the luggage managed at a low temperature. A floor heater device for preventing freezing and dew condensation on the floor surface of a warehouse entrance / exit, wherein the floor heater device is provided with a striped steel plate provided on the uppermost surface (for example, the surface is continuously anti-slip processed). A steel plate (aluminum or titanium is also acceptable), a floor heater (for example, a flat plate-shaped heat panel) arranged under the striped steel plate, and a first heat insulating material (for example, a flat heat panel) arranged under the floor heater. For example, glass wool), a rubber packing (for example, silicon rubber) arranged under the first heat insulating material, a base steel plate arranged under the rubber packing, and a base steel plate arranged under the base steel plate. a frame body for mounting a screeching steel before being set on the upper, second insulation material is injected into the frame (for example, foamed urethane), a lower portion of the first insulation, the inside The striped steel plate and the floor heater are provided with cinder concrete placed by burying a floor heater inlet pipe for supplying power to the floor heater and a third heat insulating material laid under the cinder concrete. , The first heat insulating material, the rubber packing, the base steel plate, the second heat insulating material, the cinder concrete, and the third heat insulating material in this order, forming a multilayer from the upper part to the lower part to form the striped steel plate. The floor heater device is characterized in that it is detachably placed on the surface of the floor heater.

The floor heater device of the present invention is made of various members having different functions (striped steel plate, floor heater, first heat insulating material, rubber packing, base steel plate, second heat insulating material, cinder concrete and third heat insulating material) from above. A multi-layered floor heater device is formed toward the lower part, and the upper surface of the plurality of floor heaters and the lower surface of the striped steel plate are in contact with the lower part of the uppermost striped steel plate (for example, a steel plate having a continuous non-slip surface). It is laid so that it touches. As a result, the striped steel plate can be heated evenly from the lower surface, and freezing and dew condensation are prevented from occurring on the surface thereof. Therefore, the trolley and the forklift that travel on the surface of the striped steel plate can safely travel without slipping due to freezing and dew condensation.

Furthermore, since the striped steel plate is detachably placed on the surface of the floor heater, when the floor heater fails, the electric wire that supplies power to the floor heater is broken, or the floor heater is replaced regularly. In addition, it is easy to replace the floor heater and repair the electric wire (repair of disconnection, poor contact, etc.) simply by removing the striped steel plate from the surface of the floor heater with a heavy machine or the like.

Further, since the first heat insulating material, the rubber packing, the base steel plate, the second heat insulating material, the cinder concrete and the third heat insulating material are arranged in multiple layers under the floor heater, the heat of the floor heater is generated. It is possible to prevent conduction other than the striped steel plate on the upper part, and the function of the freezing / refrigerating warehouse is not impaired.

Further, since the striped steel plate on the surface of the floor heater device is placed so as to support the four sides by the frame together with the base steel plate formed of the steel plate, the forklift (including luggage) passing through the upper surface of the striped steel plate. Can sufficiently withstand the load of.

It is a top view of the freezing / refrigerating warehouse which shows the arrangement position of the floor heater device of this Example. It is a perspective view which shows the floor heater apparatus of this Example. It is a perspective view which shows the arrangement of the floor heater of the floor heater apparatus of this Example. It is sectional drawing explaining the structure of the floor heater apparatus of this Example. It is sectional drawing which explains the multilayer shape of the floor heater device of this Example. It is a plane and sectional view explaining the construction of the floor heater apparatus of this Example. It is a plane and sectional view explaining the construction of the floor heater apparatus of this Example.

INDUSTRIAL APPLICABILITY In a freezing / refrigerating warehouse for storing and storing luggage managed at a low temperature, when the cargo is carried in / out by a cargo handling vehicle, the floor surface of the warehouse entrance / exit that hinders the traveling of the cargo handling vehicle is frozen. And a floor heater device for preventing dew condensation, the floor heater device is arranged on a striped steel plate provided on the uppermost surface, a floor heater arranged below the striped steel plate, and a floor heater below the floor heater. The first heat insulating material, the rubber packing arranged under the first heat insulating material, the base steel plate arranged under the rubber packing, and the striped steel plate arranged under the base steel plate are placed on the upper part. A frame body to be placed on the frame, a second heat insulating material (urethane foam) injected into the frame body, and a floor heater inlet pipe for supplying power to the floor heater inside under the first heat insulating material. It is provided with a cinder concrete buried and placed and a third heat insulating material laid under the cinder concrete, and includes a striped steel plate, a floor heater, a first heat insulating material, a rubber packing, a base steel plate, and a second. It relates to a floor heater device characterized in that a multilayer is formed from the upper part to the lower part in the order of a heat insulating material, a cinder concrete and a third heat insulating material, and a striped steel plate is detachably placed on the surface of the floor heater. ..

Hereinafter, examples of the floor heater device of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a freezing / refrigerating warehouse showing the arrangement position of the floor heater device of this embodiment. FIG. 2 is a perspective view showing the floor heater device of this embodiment. FIG. 3 is a perspective view showing the arrangement of floor heaters in the floor heater device of this embodiment. FIG. 4 is a cross-sectional view illustrating the configuration of the floor heater device of this embodiment. FIG. 5 is an enlarged cross-sectional view illustrating the multi-layered shape of the floor heater device of this embodiment. 6 and 7 are plan and cross-sectional views illustrating the construction of the floor heater device of this embodiment.

In the following explanation, when a forklift (particularly a battery forklift with low noise) is used as a material handling vehicle and luggage is carried in or out of the freezing / refrigerating warehouse, the entrance / exit of the freezing / refrigerating warehouse through which the forklift passes. A floor heater device installed on the floor of the opening is described as an example.

Hereinafter, an example of the arrangement position of the floor heater device 1 in the freezing / refrigerating warehouse (hereinafter, simply referred to as a warehouse) in the present embodiment will be described. As shown in FIG. 1, a plurality of multi-stage (for example, two-row, three-stage) racks R are installed inside the warehouse S. Then, the forklift 100, which is a material handling vehicle for loading and unloading luggage into and out of the warehouse S, enters and exits the warehouse through the opening SE of the entrance and exit. The arrangement and configuration of the plurality of racks R in the warehouse S are arbitrary.

The floor heater device 1 is arranged on the floor surface FL of the warehouse S of the opening SE, which is the entrance / exit, over the outside and the inside of the warehouse S. The floor heater device 1 of the present embodiment will be described in detail later, but a plurality of floor heaters 11 are laid under the striped steel plate 10 as the uppermost surface, and the striped steel plate 10 can be detachably removed from the surface of the floor heater 11. In the mounted state, the surface of the striped steel plate 10 and the surface of the floor surface FL are flush with each other on the floor surface FL of the opening SE of the warehouse S (embedded) without causing a step or the like.

In this way, the floor heater device 1 having the striped steel plate 10 as the uppermost surface is embedded in the floor surface FL of the opening SE of the warehouse S so that the surface of the striped steel plate 10 and the surface of the floor surface FL are flush with each other. The forklift 100 on which the luggage 120 is placed on the fork 101 can smoothly enter or leave the warehouse S without being hindered by a step or the like. Further, since a plurality of floor heaters 11 are laid directly below the striped steel plate 10, the forklift 100 can safely move the surface of the striped steel plate 10 without freezing or dew condensation by the plurality of floor heaters 11. By traveling, it is possible to carry in the luggage into the warehouse S and to carry out the luggage outside the warehouse S.

The configuration of the floor heater device 1 in the present embodiment will be described in detail with reference to FIGS. 2 to 5. As shown in FIG. 2, as described above, the floor heater device 1 is arranged on the floor surface FL of the warehouse S of the opening SE, which is the entrance / exit, over the outside and the inside of the warehouse S. Although not shown, a door that automatically opens and closes with an automatic door or a manual switch is provided between the left and right pillars HL and HR that form the opening SE, and the opening SE is opened except when loading and unloading luggage by the forklift 100. It is closed to keep the temperature inside the warehouse S at the optimum temperature (for example, 5 ° C in the cold warehouse and -15 ° C in the frozen warehouse).

As the striped steel plate 10 arranged on the uppermost surface constituting the floor heater device 1, a rectangular plate-shaped steel plate (also referred to as a checker plate) having a continuous non-slip surface is preferably used. The striped steel plate 10 is not limited to the steel plate, and may be made of aluminum or titanium. As shown in FIG. 3, the striped steel plate 10 is fixed to the upper part of the floor heater 11 with fastening bolts or the like (not shown) on the frame body Y arranged so as to surround the floor heater 11. When removing the striped steel plate 10, for example, the fastening bolt is removed, an eye bolt, which is a hanging metal fitting, is attached to a bolt hole of the striped steel plate 10 (not shown), and a wire rope is passed through the ring at the tip to lift the striped steel plate 10 with a heavy machine or the like. As a result, the striped steel plate 10 can be easily removed from the upper part of the floor heater 11. As a result, a plurality of floor heaters 11 laid directly under the striped steel plate 10 can be exposed, so that work such as replacement and wiring of the floor heaters 11 is easy.

As the plurality of floor heaters 11, an electric heater or the like is preferably used, and a plurality of (7 in the figure) are laid between the frame bodies Y in the shape of a rectangular plate-shaped heater panel. An electric wire 11a for supplying electric power is exposed on the upper surface of the floor heater 11. Power is supplied from the outside through the floor heater wiring pipe K (see FIG. 4) which is embedded in the electric wire 11a and the cinder concrete 16 below the floor heater 11 described later, and has one end opened in the laying portion of the floor heater 11 and protrudes. Power is supplied to the floor heater 11 by connecting to one end of the routed wiring for supplying power.

As described above, in the present embodiment, since the striped steel plate 10 is detachably placed on the surface of the floor heater 11, the floor heater 11 is broken and the electric wire that supplies power to the floor heater is repaired. Alternatively, when the floor heater is replaced regularly, the striped steel plate 10 can be easily moved from the surface of the floor heater 11 to easily replace the floor heater 11 or repair a broken wire (including poor contact). I am trying to do it.

As shown in FIGS. 4 and 5, the floor heater device 1 includes a striped steel plate 10, a floor heater 11, a first heat insulating material 12, a rubber packing 13, a base steel plate 14, a second heat insulating material 15, and cinder concrete from the top. 16 and the third heat insulating material 17 are formed in multiple layers in this order.

The striped steel plate 10 arranged on the uppermost surface is a rectangular plate-shaped steel plate having a continuous non-slip surface applied to the surface of the plurality of floor heaters 11 in a state of covering all the plurality of floor heaters 11 at the bottom. The upper surface and the lower surface of the striped steel plate 10 are brought into contact with each other and placed on the upper portions of the plurality of floor heaters 11. The plurality of floor heaters 11 have a rectangular flat plate-like panel shape, and a plurality of floor heaters 11 (7 in the drawing) are laid between the frame bodies Y.

As the first heat insulating material 12, for example, glass wool having excellent heat insulating properties and heat retaining properties is preferably used. The first heat insulating material 12 is formed in the shape of a rectangular plate having a predetermined thickness like the floor heater 11 placed on the upper portion, and is laid under each of the plurality of floor heaters 11 between the frame bodies Y. Since the glass wool used as the first heat insulating material 12 has excellent heat insulating properties, it is possible to prevent heat generated from the floor heater 11 laid on the upper part from escaping to the lower part. Further, due to the excellent heat retention, the heat generated from the floor heater 11 can be kept warm and efficiently transferred to the striped steel plate 10 mounted on the upper part of the floor heater 11, which also contributes to energy saving. can do. Further, since glass wool is a non-combustible material, it is possible to prevent the floor heater 11 placed on the upper part from burning even if it sparks.

As the rubber packing 13, for example, silicon rubber or the like is preferably used. The rubber packing 13 is for preventing moisture and moisture from the lower part of the floor heater device 1 forming the multi-layer structure from entering the floor heater 11 on the upper part via the first heat insulating material 12 on the upper part. It is a thing. The rubber packing 13 also has a rectangular plate-like sheet shape like the first heat insulating material 12 and the floor heater 11 described above, and is laid under each of the plurality of first heat insulating materials 12 between the frames Y. ing.

The base steel plate 14 is a rectangular thin plate-shaped steel plate, and a plurality of the base steel plates 14 are laid under the rubber packing 13 between the frame bodies Y. The base steel plate 14 is installed at a predetermined distance in the vertical direction from the cinder concrete 16 by the frame body Y constructed on the upper part of the cinder concrete 16. Further, as will be described in detail later, the base steel plate 14 is provided with a plurality of holes 14a, and urethane foam (hard urethane foam) as the second heat insulating material 15 is provided in the gap between the holes 14a and the cinder concrete 16. By ejecting, a layer of the second heat insulating material 15 is formed between the base steel plate 14 and the cinder concrete 16.

As the second heat insulating material 15, for example, urethane foam (hard urethane foam) having a predetermined strength is preferably used. The second heat insulating material 15 is for heat insulating the lower cinder concrete 16 and the upper base steel plate 14.

The cinder concrete 16 is, for example, a lightweight concrete made of coal slag as an aggregate, and iron is laid inside to maintain the strength. Further, as shown in FIG. 4, floor heater wiring pipes K are embedded in both ends of the cinder concrete 16. As the floor heater wiring pipe K, a copper pipe or the like is preferably used. One end of the floor heater wiring pipe K opens to the laying portion of the floor heater 11 and protrudes, and the other end opens and protrudes at arbitrary positions of the left and right pillars HL and HR forming the opening SE. A wiring Ka for supplying electric power to the floor heater 11 is routed inside the floor heater wiring pipe K, and one end of the wiring Ka is connected to the electric wire 11a (see FIG. 3) of the floor heater 11. The other end is connected to a power supply device (not shown).

Further, as shown in FIG. 4, the cinder concrete 16 is embedded with a tubular heater inlet pipe K1 having both ends open for heating the cinder concrete 16. A copper pipe or the like is preferably used as the heater inlet pipe K1. In the cinder concrete 16, a plurality of (for example, two) heater inlet pipes K1 are embedded in a straight line in the longitudinal direction of the cinder concrete 16 in a plan view. Both ends of the heater inlet pipe K1 are provided so as to open and project at arbitrary positions of the left and right pillars HL and HR forming the opening SE. A heater wire Hs is wired inside the heater inlet pipe K1, and a trace heater, a cellcon heater, or the like is preferably used as the heater wire Hs. Both ends of the heater wire Hs are connected to a power supply device (not shown). In the present embodiment, the inside of the cinder concrete 16 is preheated to a predetermined temperature (for example, 60 ° C.) by supplying a predetermined electric power to the heater wire Hs. By preheating the cinder concrete 16 in this way, each layer constituting the upper portion is also preheated. As a result, the efficiency of heat conduction to the striped steel plate 10 by the floor heater 11 can be improved, and the striped steel plate 10 can be heated with a small amount of electric power to prevent surface freezing and dew condensation.

The third heat insulating material 17 is generally used when constructing the floor of a freezing / refrigerating warehouse. For example, Styrofoam (registered trademark), which has excellent workability and heat insulating properties, is lightweight and does not easily absorb water, is used. It is preferably used. The third heat insulating material 17 is for heat insulating the floor heater device 1 so that heat from the outside or the ground does not affect the floor heater device 1. Further, the heat of the preheated cinder concrete 16 is conducted to the outside of the floor heater device 1 to insulate the temperature of the freezing / refrigerating warehouse so as not to affect the temperature.

As described above, the floor heater device 1 of the present embodiment is provided with various members having different functions (striped steel plate 10, floor heater 11, first heat insulating material 12, rubber packing 13, base steel plate 14, second heat insulating material). By forming a multi-layer structure using 15, cinder concrete 16, and a third heat insulating material 17), the heat of the floor heater 11 is prevented from being conducted to other than the upper striped steel plate 10, and the floor heater device 1 is surrounded (15). For example, it can be configured so as not to be affected by the temperature of (underground), and the function of the freezing / refrigerating warehouse is not impaired.

Hereinafter, the construction procedure of the floor heater device 1 of the present embodiment will be described with reference to FIGS. 6 and 7. As shown in FIG. 6A, the floor heater device 1 digs a rectangular parallelepiped hole H having a predetermined depth in the floor surface FL (see FIG. 1) of the warehouse S of the opening SE, which is the installation location. At this time, the upper four sides of the holes H formed in the floor surface FL are reinforced by a steel frame F in which a flat steel material is bent at a right angle. Further, the bottom surface of the hole H of the rectangular parallelepiped is leveled in a flat shape with no inclination in the horizontal direction.

As shown in FIG. 6B, a third heat insulating material 17 having a predetermined thickness is laid in the lowermost layer of the hole H. Subsequently, as shown in FIG. 6C, cinder concrete 16 having a predetermined thickness is placed on the upper portion of the third heat insulating material 17. At this time, the upper surface of the third heat insulating material 17 and the upper surface of the cinder concrete 16 are leveled in a flat shape with no inclination in the horizontal direction. Subsequently, as shown in FIG. 6D, the frame body Y is vertically erected on the upper surface of the cinder concrete 16. As shown in the figure, the upper surface of the cinder concrete 16 is evenly divided into seven by the frame body Y.

Subsequently, as shown in FIG. 6E, the base steel plate 14 is installed near the upper center of the frame body Y at a predetermined interval in the vertical direction from the upper surface of the cinder concrete 16. A plurality of (7 in the figure) of the base steel plates 14 are installed between the frame bodies Y evenly divided into seven. Further, as described above, the base steel plate 14 is provided with a plurality of holes 14a (six places in the drawing), and the holes 14a are made of urethane foam (hard urethane foam) as a second heat insulating material. , It is for ejecting between the base steel plate 14 and the cinder concrete 16.

Subsequently, as shown in FIG. 7A, urethane foam (hard urethane foam) as the second heat insulating material 15 is formed from the plurality of holes 14a provided in the base steel plate 14, with the base steel plate 14 and cinder concrete. It spouts between 16 and 16. As a result, the layer of the second heat insulating material 15 is formed between the frame body Y evenly divided into seven and between the base steel plate 14 and the cinder concrete 16. As a result, heat insulation can be performed without a gap between the cinder concrete 16 and the base steel plate 14 without forming an air layer.

Subsequently, as shown in FIG. 7B, a sheet-shaped rubber packing 13 is laid on the upper portion of the base steel plate 14. As shown in FIG. 7C, glass wool as the first heat insulating material 12 is laid on the upper part of the rubber packing 13. Both the rubber packing 13 and the first heat insulating material 12 are laid between the frame bodies Y evenly divided into seven parts. Subsequently, as shown in FIG. 7D, floor heaters 11 are placed on the upper portions of the first heat insulating material 12, respectively. The floor heater 11 is also placed on the upper part of the first heat insulating material 12 between the frame bodies Y evenly divided into seven parts.

Finally, the striped steel plate 10 is installed at the upper end of the floor heater 11 and at the upper end of the frame body Y. At this time, as described above, the lower surface of the striped steel plate 10 is installed so as to be in contact with the upper surface of the floor heater 11, but the striped steel plate 10 is fixed to the upper end of the frame body Y by a plurality of connecting bolts (not shown). Due to the configuration, the weight of the striped steel plate 10 is not directly applied to the floor heater 11. Further, since the glass wool as the first heat insulating material 12 laid directly under the floor heater 11 has elasticity, even if the weight of the striped steel plate 10 is applied to the floor heater 11, the first heat insulating material 12 Shrinks due to its weight, so that the floor heater 11 can be prevented from being crushed. Further, due to the elasticity of the glass wool, the floor heater 11 placed on the upper portion of the glass wool can be brought into close contact with the lower surface of the striped steel plate 10 with an appropriate pressure, so that the heat of the floor heater 11 can be efficiently transferred to the striped steel plate 10. Can be done.

According to the floor heater device 1 having the above-described configuration, the striped steel plate 10 on the surface of the floor heater device 1 is formed of a frame Y formed of a zinc-plated iron plate together with a base steel plate 14 formed of the steel plate. Since the striped steel plate 10 is mounted so as to support the central portion and all four sides, it can sufficiently withstand the load of the forklift 100 (including luggage) passing through the surface of the striped steel plate 10. In addition, various members (floor heater 11, first heat insulating material 12, rubber packing 13, base steel plate) provided in multiple layers under the striped steel plate 10 due to the weight of the striped steel plate 10 and the weight of the forklift 100 (including luggage). It is possible to prevent damage to 14, the second heat insulating material 15, the cinder concrete 16 and the third heat insulating material 17).

Although the present invention has been described above through the above-described embodiments, the present invention is not limited thereto. In addition, each of the above-mentioned effects is merely a list of the most preferable effects arising from the present invention, and the effects according to the present invention are not limited to those described in the present embodiment.

1 Floor heater device 10 Striped steel plate 11 Floor heater 12 First heat insulating material 13 Rubber packing 14 Base steel plate 15 Second heat insulating material 16 Cinder concrete 17 Third heat insulating material 100 Forklift 101 Fork 120 Luggage F Steel frame FL Floor surface R Rack S warehouse SE opening

Claims (1)

In a freezing / refrigerating warehouse that stores and stores luggage managed at low temperatures, when loading and unloading luggage with a material handling vehicle, it prevents freezing and dew condensation on the floor surface of the warehouse entrance that hinders the running of the material handling vehicle. It is a floor heater device for
The floor heater device
The striped steel plate provided on the top surface and
A floor heater arranged under the striped steel plate and
The first heat insulating material disposed under the floor heater and
The rubber packing disposed under the first heat insulating material and
The base steel plate arranged under the rubber packing and
A frame body for mounting a screeching steel before which is arranged in a lower portion of the substrate steel sheet on top,
The second heat insulating material injected into the frame and
Cinder concrete placed under the first heat insulating material by burying a floor heater inlet pipe for supplying electric power to the floor heater inside.
The third heat insulating material laid at the bottom of the cinder concrete,
With
The striped steel plate, the floor heater, the first heat insulating material, the rubber packing, the base steel plate, the second heat insulating material, the cinder concrete, and the third heat insulating material are layered in this order from the upper part to the lower part. A floor heater device formed and the striped steel plate is removably placed on the surface of the floor heater.

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