JP5018699B2 - Drainage device and drainage method - Google Patents

Description

  The present invention relates to a drainage device for draining dew condensation water or the like accumulated in a ventilation facility such as a hood or a duct or an air conditioning facility, and a drainage method using the drainage device.

  Of these types of ventilation equipment and air-conditioning equipment, especially in exhaust hoods in kitchens and food factories, it is often seen that condensation occurs inside due to the passage of exhaust gas containing steam.

  Conventionally, for such condensed water, a water receiving part is provided at the lower end of the hood, a drainage nipple is installed at the water receiving part to discharge condensed water, a hose is connected to the drain hole of the water receiving part, and the lower end of the hose It has been practiced to drain the pot (see, for example, Patent Documents 1, 2, and 3). Furthermore, drainage pipes (drain drainage pipes) are connected to drainage nipples and led to building drainage facilities.

  FIG. 2A is an example of a conventional drainage device in a kitchen or a food factory. An exhaust hood 1 is installed on the ceiling, and a drain drain pipe 50 is attached to a water receiving portion 2 at the lower end of the hood. Condensed water accumulated in the water is discharged. This drain drain pipe 50 is connected to the lower surface of the water receiving portion 2 via a drain nipple, and is connected to a plurality of vertical pipes 50a at intervals in the longitudinal direction, and the lower part of each vertical pipe 50a is connected along the lower surface of the hood. The horizontal pipe 50b is horizontally arranged, and the vertical pipe 50c is suspended from one end of the horizontal pipe 50b on the floor surface.

  Concerning the discharge of condensed water in the duct, Patent Document 4 discloses that a bent part is provided in the middle of the duct for discharging air containing water vapor, and the condensed water is discharged from the duct in which the drain pipe of the condensed water is connected to the bent part. A structure has been proposed.

Japanese Patent Application Laid-Open No. 07-233989 JP 11-2111173 A JP 2007-57169 A JP-A-8-327120

  In kitchens and food factories, in order to keep the work area clean, cleaning work is carried out thoroughly every day, taking up much work time. For this reason, the conventional method in which a drain drain pipe is installed under the exhaust hood has the following problems.

(1) Since the drain drain pipe is placed horizontally under the hood, the number of new objects to be cleaned increases and it becomes an obstacle to the cleaning work around it.

(2) The upper part of the horizontal pipe placed horizontally becomes a dust reservoir, which may cause contamination of food.

(3) Since the exhaust hood is usually installed at the ceiling level, it is difficult for the operator to visually observe the inside of the water receiving portion and to keep it clean.

  The present invention has been made to solve such problems, and in a drainage device that drains condensed water and the like that accumulates inside ventilation equipment and air conditioning equipment such as hoods and ducts, conventional hoods and ducts, etc. It is an object of the present invention to provide a drainage device that can eliminate the drain drainage pipe disposed below, improve hygiene management, increase the efficiency of cleaning work, reduce costs, and the like, and a drainage method using the drainage device.

  A drainage device according to claim 1 of the present invention is a drainage device for discharging water accumulated inside equipment such as a hood and a duct to the outside of the equipment, and is provided in the equipment and closes a valve body with a pressing force. A check valve that prevents the outflow of water in the facility and opens the valve body with an external force, and has a shape that surrounds the bottom of the check valve at the tip of the rod-shaped pipe. It is comprised from the water receiving cylinder part and the draining instrument provided with the rod-shaped protrusion which opens and operates the valve body of a non-return valve, It is characterized by the above-mentioned.

  In the present invention, a check valve is normally installed in a hood, a duct or the like so that the valve is closed, and when drainage is required, an operator holds a drainage device in his hand and pushes it up from below. The valve body of the check valve is opened by the protrusion, and the water accumulated in the hood and duct is received by the water receiving cylinder through the check valve, and the pipe is allowed to flow down and discharged to the floor surface, drainage side groove, etc. is there.

  The drainage device according to claim 2 of the present invention is characterized in that, in the drainage device according to claim 1, a check valve is provided in a water receiving portion for storing water in the hood.

  This is applicable to exhaust hoods installed in kitchens and food factories where hygiene management is required. A non-return valve is attached to the bottom surface of the water receiving part provided at the bottom of the hood, and drainage is drained under the hood as before. Eliminate tube placement.

  The drainage device according to claim 3 of the present invention is the drainage device according to claim 2, wherein the inner surface of the hood is mirror-finished.

  Since the inside of the bowl-shaped water receiving portion at the lower end of the hood is reflected on the inner surface of the hood, an operator can visually check from below.

  A drainage method according to claim 4 of the present invention is a drainage method for draining water accumulated inside equipment such as a hood and a duct to the outside of the equipment, and any one of claims 1 to 3. Using the drainage device described in the above, with the check valve closed, water is collected inside the facility, and the pipe is pushed up with the water receiving cylinder of the drainage device placed under the check valve. The valve body of the check valve is opened by the protrusion, and the water accumulated in the facility is received by the water receiving tube through the check valve, and the pipe is allowed to flow down to be discharged.

  Since the present invention is configured as described above, the following effects can be obtained.

(1) It is possible to eliminate the drain drain pipe under the hood or duct that would hinder the surrounding cleaning. Thereby, the fall of the surface dew condensation water from a drain drain pipe, foreign material mixing, and the cleaning work in a high place can be eliminated, and hygiene management can be improved. In addition, the initial cost for constructing the facility can be reduced.

(2) It is possible to eliminate contamination of food by foreign matter accumulated in the drain drain pipes that are arranged horizontally.

(3) It can prevent the occurrence of mold, insects, etc. that are generated inside the drain drainage pipe.

(4) By adjusting the length of the drainage pipe and adding a flexible pipe, the contaminated drainage can be drained to the floor or drainage gutter without splashing.

(5) By disassembling and cleaning each member of the drainage device, the device can be kept clean and hygiene management can be thoroughly implemented.

(6) By making the inner surface of the hood into a mirror finish, it becomes possible to clean while checking the state of dirt inside the water receiving portion of the hood. This makes it possible to reliably and easily clean the exhaust hood, which is important for keeping the work area of the kitchen or food factory clean.

  Hereinafter, the present invention will be described based on the illustrated embodiment. This embodiment is an example applied to an exhaust hood that is installed above a steam generation source in a food factory and induces and exhausts steam or the like. FIG. 1 is a sectional view showing an example of the drainage device of the present invention. FIG. 2 is a cross-sectional view of a room in which an exhaust system equipped with a drainage device is compared with a conventional one in the present invention. FIG. 3 is a sectional view showing an example of a check valve used in the present invention. FIG. 4 is a cross-sectional view showing an example of the drainage device used in the present invention.

  As shown in FIGS. 1 and 2, the lower end of the exhaust hood 1 installed at the ceiling level in the building is provided with a bowl-shaped water receiving portion 2 for receiving dew condensation water of steam generated inside the hood. ing. With respect to such an exhaust hood 1, in the present invention, the drainage device 10 is composed of a check valve 20 and a drainage device 30.

  That is, by closing the valve body 21 with a pressing force on the lower surface of the water receiving portion 2, the outflow of water in the water receiving portion 2 is prevented, and by opening the valve body 21 with an external force, A check valve 20 for allowing water to flow out is provided, and a drainage device 30 in which a water receiving tube portion 32 and a rod-shaped protrusion 33 are provided at the tip of a rod-shaped pipe 31 is used. The valve body 21 of the check valve 20 is opened by the rod-shaped protrusion 33, the water accumulated in the water receiving portion 2 is received by the water receiving cylinder portion 32 through the check valve 20, and the inside of the pipe 31 is caused to flow down. Discharge to the floor or drainage gutter.

  As shown in FIG. 2, a plurality of check valves 20 are arranged at an appropriate interval in the longitudinal direction of the water receiving portion 2, and as shown in FIG. 1, for example, water is obtained using a socket 40 and a nipple 41. Connect to the receiving part 2.

  The check valve 20 may have a generally used structure, and a spring type having a high water-stopping property is preferable in order to prevent water leakage. Normally, it is installed so that the valve is closed. In the example of FIG. 3, the valve seat 23 is provided inside the valve box 22, and the valve body 21 disposed thereon is pressed against the valve seat 23 by the pressing force of the spring 24 to close the valve seat opening. A disc holder (valve body holding portion) 21a to be inserted into the valve seat opening is provided below the valve body 21. By pushing up the rod-shaped protrusion 33, the valve body 21 rises against the pressing force of the spring 24, and the valve Open state. A lid 25 is attached to the top of the valve box 22.

  As shown in FIG. 4, the water draining device 30 is provided with a water receiving cylinder part 32 by expanding the tip of a long pipe 31, and a rod-like protrusion 33 protruding upward in the center of the water receiving cylinder part 32. Is provided. As shown in FIG. 1, the water receiving cylinder portion 32 has a cup shape or the like that completely covers the lower part of the check valve 20 so that the discharged water does not scatter around. Further, an opening is provided at the bottom of the water receiving tube portion 32 so as to communicate with the upper opening of the pipe 31.

  The rod-shaped protrusion 33 has, for example, a nut 34 disposed in the center of the water receiving cylinder portion 32, and the nut 34 is fixed to the inside of the water receiving cylinder portion 32 via a rod-shaped member 35. Screw in the bottom of and attach.

  The water accumulated in the water receiving portion 2 is sequentially discharged to the operator's feet through the open check valve 20, the water receiving cylinder portion 32, and the inside of the pipe 31. Stainless steel is preferred for hygiene management. Further, in consideration of workability to the check valve 20 installed at a high place, the pipe 31 preferably has a thickness of about 25 to 30A. Furthermore, it is preferable that the pipe 31, the water receiving cylinder part 32, and the rod-shaped protrusion 33 can be disassembled and cleaned. Moreover, it is preferable to reduce as much as possible the scattering of drainage to the operator's feet by adopting a pipe 31 having a length suitable for the installation height of the check valve 20. A flexible hose can be added to the pipe 31 and led to the floor surface, the drainage side groove, or the like.

  Further, the inner surface of the exhaust hood 1 tends to become a dust reservoir, and its confirmation is a work at a high place. Therefore, as shown in FIG. 1, the inner surface of the exhaust hood 1 is mirror-finished so that the floor operator can visually check the upper surface of the water receiving portion 2 in the hood using the mirror reflection effect. .

  In addition, although the above demonstrated the case where it applied to an exhaust hood, it is applicable also to a duct etc. When a check valve is installed at the lower part of the duct, it is desirable to provide a downward slope inside the duct toward the check valve installation portion so as to collect the surrounding drain water.

It is sectional drawing which shows an example of the drainage device of this invention. It is sectional drawing of the room | chamber interior which compared the exhaust system provided with the drainage device with the conventional invention. It is sectional drawing which shows an example of the non-return valve used by this invention. It is sectional drawing which shows an example of the water draining instrument used by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Exhaust hood 2 ... Water receiving part 10 ... Drainage device 20 ... Check valve 21 ... Valve body 21a ... Disc holder 22 ... Valve box 23 ... Valve seat 24 ... Spring 25 ... Lid 30 ... Drainage device 31 ... Pipe 32 ... Water Receiving tube portion 33 ... rod-shaped protrusion 34 ... nut 35 ... rod-shaped member 40 ... socket 41 ... nipple

Claims (4)

  It is a drainage device for discharging water accumulated inside the equipment such as hoods and ducts to the outside of the equipment, provided in the equipment, preventing the outflow of water in the equipment by closing the valve body with pressing force, In addition, a check valve that causes the water in the facility to flow out by opening the valve body with an external force, a water receiving cylinder part that surrounds the lower part of the check valve, and a valve body of the check valve A drainage device comprising: a drainage device provided with a rod-like projection that opens the door.   The drainage device according to claim 1, wherein a check valve is provided in a water receiving portion for storing water in the hood.   The drainage device according to claim 2, wherein the inner surface of the hood is mirror-finished.   A drainage method for discharging water accumulated inside a facility such as a hood or a duct to the outside of the facility, wherein the check valve is used by using the drainage device according to any one of claims 1 to 3. With the valve closed, water is accumulated inside the equipment, and the pipe of the drainage device is placed under the check valve. The drainage method is characterized in that the water accumulated inside the pipe is received by a water receiving tube through a check valve, and the pipe is allowed to flow down and discharged.

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