CN100532952C - Overflow automatic water replenishment device - Google Patents

Abstract

The invention belongs to preheater water compensating field. It relates to overflow automatic water compensating device. It is made up of ball float, water supply valve, preheater, and overflow hole. Its principle is as follows: the ball float is set on the surface of water in water boiling vessel with low water level; the overflow hole is set in the preheater with high water level; the water supply valve is added cold water into preheater, and exchanged with the overflow hole to gain hot water for the water boiling vessel.

Description

Overflow automatic water replenishment device

technical field

The invention belongs to the field of replenishing water for a preheater, in particular to the field of replenishing water for a water boiling stove with a preheater.

Background technique

The patent No. 012216375 of gas and fuel oil steaming and frying stove with water boiler is a stove for canteens and restaurants. The body of heater is provided with a preheater, which can utilize flue gas to preheat hot water. There are also steam box stoves and steam cabinet stoves designed on the same principle. The stove preheaters used for steaming food in this type of canteen and restaurant are all installed in open water boilers: above the pots and tanks, the water level of the preheater is higher than that of the boiler, and there is a certain water level difference. It cannot be controlled, so it has been unable to automatically replenish cold and hot water to the preheater and water boiler.

For steam box stoves and steam cabinet stoves with preheaters, the water heating tank has a floating ball, and the water storage tank automatically replenishes cold water. The hot water in the preheater cannot be replenished into the water heating tank, so it can only be used for other purposes. A steamer stove with a preheater requires the operator to constantly observe the water level, manually control the water supply valve to replenish cold water into the preheater, and then replenish hot water to the boiler, which is inconvenient to operate. The further popularization and application of this class of energy-saving stoves has been restricted due to the above reasons.

Contents of the invention

In order to solve the problem of automatic replenishment of water for open water boiling stoves with preheaters, the present invention provides an automatic overflow water replenishment device, which can control the low water level, and conveniently automatically replenish cold and heat to the preheater and the water boiler at the same time water.

The technical solution adopted by the present invention to solve the technical problem is: the automatic overflow water replenishment device is mainly composed of a floating ball, a water supply valve, an upper water pipe, a water replenishment pipe, a preheater, an overflow hole, an overflow pipe, . It is installed on the water boiling stove where the water level of the preheater is higher than that of the water boiler, and there is a certain water level difference. The principle is: set a floating ball on the water surface of the boiler with a low water level, and set an overflow hole on the water surface of the preheater with a high water level. Supplement cold water, and replace hot water from the overflow hole to replenish in the water boiler. The function of the float is to keep the hot water in the boiler at a certain level. When the water level drops, the water supply valve connected to the upper water pipe is controlled to be opened due to the drop of the floating ball, and the cold water enters the preheater from the replenishing water pipe. The preheater is also used as a water storage tank, and an overflow hole is set at the upper calibration height to control the maximum water level of the water storage in the preheater. Because the hot water floats above, utilizing the overflow hole to supplement the hot water can prevent the temperature of the hot water overflowing from being affected when supplementing the cold water. The displaced high-temperature hot water enters the boiler through the overflow pipe, and the float rises with the increase of the water level. When reaching the calibrated height, the water supply valve is closed, and the water replenishment stops.

The beneficial effects of the present invention are: the overflow automatic replenishment device is adopted, the preheater and the boiler are integrated, and the high-temperature hot water and steam generated in the preheater can be supplemented into the boiler at any time. Another advantage is that less equipment is used and the method is simple. This device is used in canteens and restaurants with preheaters on steamers, steamers, and steaming cabinet stoves, which improves the automation of the stove, enables continuous operation, is convenient to use, reduces labor intensity, and improves the utilization rate of the stove. After several years of use and inspections by relevant national departments, the thermal efficiency of water-boiling stoves with preheaters is as high as 60%, especially for stoves with blast steamers, steam boxes, and steam cabinets. After installing preheaters, the thermal efficiency increases by 80%. % or more, the energy-saving effect is remarkable. The invention is beneficial to the further popularization and use of such energy-saving stoves.

Description of drawings

Accompanying drawing is an embodiment of the present invention

Attached drawing 1. Schematic diagram of automatic water replenishment device for overflow of steamer stove with preheater

Attachment 2. Structural schematic diagram of hot water tank, float ball and water supply valve

In the figure (1) water boiler, (2) connecting pipe, (3) hot water tank, (4) floating ball, (5) connecting rod, (6) lever, (7) spool, (8) water supply valve , (9) upper water pipe, (10) water supply pipe, (11) preheater, (12) overflow hole, (13) overflow pipe, (14) stove, (15) burner

Detailed ways

Figure 1 and Figure 2 describe the working principle of the steamer stove overflow automatic water replenishment device with a preheater. boiling water

Figure 1 and Figure 2 describe the working principle of the steamer stove overflow automatic water replenishment device with a preheater. The side of water boiler (1) draws connecting pipe (2) and establishes hot water tank (3) in addition, can reduce like this the impact of hot water in the kettle (4) on float. The function of the floating ball (4) is to keep the hot water in the boiler (5) at a certain water level. When the water level drops, the floating ball (4) will drive the connecting rod (5) to rise, and the connecting rod (5) will Drive the lever (6) to press the spool (7), at this time the water supply valve (8) connected to the upper water pipe (9) is opened, and the cold water enters the preheater (11) from the replenishment pipe (10). The water level rises, and the high temperature Hot water enters the boiler (1) from the overflow hole (12) through the overflow pipe (13), and the floating ball (4) rises with the increase of the hot water level. (8) Stop water replenishment. The floating ball (4) controls the water supply valve (8) switch with the rise and fall of the hot water level. The unit is used on an open water boiler with a preheater.

Claims (1)

1. An overflow automatic water supply device, including a floating ball, a water supply valve, a preheater, and an overflow hole, installed on an open stove with a water boiler, the preheater and the water boiler have a certain water level difference and The water level of the preheater is higher than that of the water boiler, and its characteristics are: an overflow hole is set at a calibrated height above the high water level preheater, and the overflow hole controls the highest water level of the water stored in the preheater; A floating ball is set on the water surface, and the floating ball controls the opening or closing of the water supply valve connected to the water supply pipe according to the water level in the boiler, so that the water supply valve supplies cold water to the preheater that doubles as the water storage tank or stops supplying cold water to the water supply valve. Water is replenished in the preheater, and the generated hot water and steam are replenished into the boiler from the overflow hole.

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