TECHNICAL FIELD

The invention relates to oil channels, a main channel and an auxiliary supply channel which provide linearity in the flow rates that occur due to the angle change and increase the maximum flow rate that will occur in the gas taps providing gas flow control by a disc structure placed inside the body in domestic or industrial gas cookers.

STATE OF THE ART

In gas taps, a gas flow occurs at different flow rates when a user rotates a button such that a shaft therein rotates to simultaneously rotate a gas transmission element in each rotation angle. A conical element, which is conical in shape, is currently used as the gas transmission element. However, considering the technical problems of the conical element, such as the manufacturing difficulty, a disc structure consisting of a movable disc and a fixed disc has been developed. In gas taps with a disc structure, gas enters through the gas inlet provided in the body. The incoming gas is initially directed to the fixed disc, which receives the gas through a front part of the body therein. A gas inlet hole in which the maximum supply is achieved, a minimum supply hole and a gas outlet hole in different geometries are provided on the fixed disc. Then, the fixed disc transmits the gas to the movable disc by means of the gas outlet hole therein. The movable disc and the fixed disc have a form suitable for passing the shaft conjugately therethrough. By means of this form, when the shaft is rotated, the movable disc rotates to move the gas backwards so that the gas comes out from the gas outlet in the body. In this way, the burning process takes place. With the rotation of the shaft, the movable disc rotates and the channels in which the gas is provided expand, resulting in maximum burning.

TR 2020/06763 relates to gas taps with a disc structure. The movable disc for gas transmission consists of two channels. When the movable disc rotates on the fixed disc, gas passage is initiated by passing the gas through the minimum channel, then it is combined with the other channel to achieve maximum burning. In case of a gas supply through both of the channels, the flow rate remains the same even if the angle changes. Thus, the maximum flow rate remains low. With the improvements in the tap configuration with a disc according to the invention, the flow passage is provided with a single channel. Therefore, the maximum flow rate is increased.

A disc with a similar structure can be seen in the stepped gas tap disclosed in US2018320794 by Copreci. When the shaft of the tap is rotated for flow passage, disc parts create a friction force with each other. To prevent this, oil should be applied between the running parts. However, while functioning between these parts, the oil fills into the gas passage holes, resulting in a decrease in the targeted flow rate.

OBJECT OF THE INVENTION

An object of the invention is to provide a gas flow by a single channel.

Another object of the invention is to provide a tap configuration with a disc, which allows for a high maximum flow rate.

An object of the invention is to provide a tap configuration with a disc, which ensures a linear curve in the angle versus flow rate diagram.

A further object of the invention is to eliminate the problem of flow rate decrease as a result of oil clogging.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a cross-sectional view of the gas tap according to the invention.

Figure 2 is a comparative graph for angle versus flow rate of the current gas tap according to the invention.

Figure 3 is an illustration of the current movable disc.

Figure 4 is an illustration of the fixed disc according to the invention.

Figure 5 is a front view of the movable disc according to the invention.

Figure 5a is a C-C sectional view of the movable disc according to the invention.

Figure 6 is a perspective view of the movable disc according to the invention.

Figure 6a is a detailed illustration of the movable disc according to the invention.

Figure 7 is a perspective view of the body according to the invention. REFERENCE NUMERALS

1 . Gas T ap

1.1. Shaft

1 .2. Cover

1.3. Body

1.3.1. Gas Inlet

1 .3.2. Gas Outlet

1 .3.3. Auxiliary Supply Channel

1.3.4. Full Passage Hole

1 .4. Movable Disc

1 .4.1 . Main Channel

1 .4.1 .1 Specific Form

1.4.1.2 Spiral Form

1 .4.2. Oil Channel

1 .5. Fixed Disc

1.5.1. Gas Inlet Hole

1.5.2. Minimum Supply Hole

2. Current Gas Tap

2.1 . Current Movable Disc

2.1.1. Main Channel

2.1.2. Minimum Supply Channel

2.1.3. Oil Holes

2.2. Current Fixed Disc

DETAILED DESCRIPTION OF THE INVENTION

The invention relates to gas taps (1) with discs designed for use in domestic or industrial gas cookers shown in Figure 1. In general, it consists of the assembly of the body (1.3) having a gas inlet (1.3.1) and one or two gas outlets (1.3.2), the shaft (1.1), the cover (1.2), the movable disc (1.4), the fixed disc (1.5) and other components. The gas taps (1) start to operate when a user rotates a button 90° clockwise or counter clockwise, reaching the minimum position, wherein an increase or decrease in the flame level created by the tap is again achieved by the user rotating the button according to any rotation angle. Thanks to the gas tap with discs according to the invention, an efficient burning is achieved by providing a higher flow rate for the NG or LPG gas that creates the flame.

Considering the other taps used in the art, a conical element is used as a gas transmission element. However, considering the technical problems of the conical element, such as the manufacturing difficulty, a disc structure consisting of a movable disc and a fixed disc is developed. In gas taps with a disc structure currently used, the maximum flow rate is desired to be increased, as shown in the graph given as dashed lines in Figure 2. Accordingly, the gas tap (1 ) with a disc structure according to the invention is provided.

In gas taps (1 ) with a disc structure, gas enters through the gas inlet (1.3.1) in the body (1.3). The incoming gas is initially directed to the fixed disc (1.5), which receives the gas through a front part of the body (1.3). A gas inlet hole (1.5.1), a minimum supply hole (1.5.2) and a gas outlet hole (1.5.3) in different geometries are provided on the fixed disc (1.5), where maximum supply is achieved. Then, the fixed disc (1.5) transmits the gas to the movable disc (1.4) by means of the gas outlet hole (1.5.2) therein. The movable disc (2.1-1.4) and the fixed disc (1.5) have a form suitable for passing the shaft (1.1 ) conjugately therethrough. By means of this form, when the shaft (1.1 ) is rotated, the movable disc (2.1-1 .4) rotates to move the gas backwards so that the gas comes out from the gas outlet (1.3.1) in the body (1.3). In this way, the burning process takes place. With the rotation of the shaft (1 .1), the movable disc (2.1 -1.4) rotates and the channels in which the gas is provided expand, resulting in maximum burning.

Flow passage in gas taps with a disc structure, which is currently used, is provided by two channels located in the movable disc (2.1) shown in Figure 3. The movable disc (2.1 ) has a main channel (2.1.1) and a minimum burning channel (2.1.2) which is connected with the main channel (2.1.1 ). Even if the angle changes when the gas reach these two channels at the same time, the flow rate would be the same at different angles. In this case, the first technical problem is encountered, which causes the maximum flow rate to be low. In order to solve this technical problem, the movable disc structure with two- channels has been provided as a single-channel structure. Both minimum and maximum supply can be achieved with a single channel. The main channel according to the invention has a specific form (1.4.1.1) with a minimum diameter of 7 mm, as shown in Figure 5. Further, it has a spiral form (1.4.1.2) that decreases both in depth and in diameter from the first inlet to the outlet. In this way, the value of the maximum flow rate is increased.

In addition to the improvement for this main channel (1.4.1) made in the movable disc

(1.4), another improvement that will increase the maximum flow rate is provided in the fixed disc (1.5) shown in Figure 4. Referring to the gas inlet hole (1.5.1 ), where the maximum supply is performed, and to the minimum supply hole (1 .5.2) that are provided in the fixed disc, the minimum supply hole is placed after the maximum supply hole relative to the location in the current fixed disc.

Another improvement for increasing the maximum flow rate is made on the body (1.3) shown in Figure 7, such that an auxiliary supply channel (1.3.3) is provided in the body. The losses during the passage of gas through the gas inlet (1.3.1) to the discs are minimized with this channel (1.3.3). In addition, the full passage (1.3.4) hole in the body where the discs are located has a diameter of at least 6 mm in order to be able to supply 900 l/h.

Another factor that causes the maximum flow rate to decrease is the oil problem. In order for the movable disc to move easily on the surface of the fixed disc, oil is applied on the surface of the movable disc. However, over time, it can be observed that the oil is pushed towards the edges of the disc such that it accumulates thereon. This causes a low reading for the maximum flow rate. In order to solve this technical problem, in addition to the oil holes (2.1.3) in the movable disc, oil channels (1.4.2) are provided around the main channel (1.4.1), as shown in Figure 5a. The oil channels (1.4.2) have a height (H) of 0.1 mm from the top portion of the main channel (1.4.1). Figure 5a shows a detailed view of the height (h). In this way, the accumulation of oil on the outer part of the movable disc

(1.4) is prevented, and a linear burning curve is obtained while increasing the maximum flow rate.

In addition to the improvements described above, another factor that ensures the linearity of the flow rate curve in the tap is the proper bedding of the discs. In order to fix the bedding, the shaft (1.1) is split into two in the middle, so that it is passed through the discs. Therefore, it contributes to the linearity of the flow rate curve. With the gas taps (1 ) designed for the cookers and ovens according to the invention, the problem of the low maximum flow rate in the current situation is solved, and linearity is ensured in the flow rate curves.