TWI674152B - A gas nozzle with gas regulation which is applied to various gas cookers - Google Patents

Abstract

The invention provides a nozzle structure with adjustable air volume, which is applied to various types of gas appliances. The nozzle structure with adjustable air volume includes: a nozzle unit having an air outlet end provided at one end of the nozzle and an inlet end provided at the other end. The air end is provided with an elastic plug device, a preset space and a stop ring member that is compatible with part of the preset space in order from the air outlet end to the air inlet end, and a penetration from the air outlet end. An air guiding duct toward the air inlet end; and a hole regulating valve, which is a ring piece with a predetermined thickness and is accommodated in a part of the preset space while closely contacting the elastic plug device and the abutment ring piece Then, the hole regulating valve has a first through hole and a second through hole smaller in diameter than the first through hole in the ring piece, and a considerable distance is maintained between the first through hole and the second through hole. ; If the structure configuration can reach the gas intake and adjust the gas heat source according to different heating values.

Description

Nozzle structure with adjustable air volume

The invention relates to a gas output nozzle of a gas appliance, and in particular relates to a nozzle structure capable of being adjusted to a gas source with a different calorific value.

Domestic gas fuels in Taiwan are mainly divided into two types: liquefied petroleum gas and natural gas. The main component of liquefied petroleum gas is propane (C ₃ H ₈ ), which is mixed with butane (C ₄ H ₁₀ ). It is a gas at normal temperature and pressure. It can be liquefied by being pressurized (or cooled) and put into a cylinder for use. , So commonly known as barrel gas.

Of course, in addition to the different composition of natural gas and liquefied petroleum gas, their calorific values are also different. The calorific value of natural gas is low because of its volume; the calorific value of liquefied petroleum gas is high by its weight.

The so-called calorific value is the heat released per kilogram of material combustion, 16 grams of methane, 62.5 moles of one kilogram, and the calorific value is 54937kJ. If the unit of conversion is cal, one kilogram of methane can burn completely to produce 11,946kcal; Natural gas is measured by volume, and its calorific value ranges from 8900kcal to 9900kcal per cubic meter. As for propane, one mole is 44 grams, one kilogram is 22.7 moles, and the calorific value is 50045 kJ. The liquefied petroleum gas is measured by weight, so it generates a net calorific value of about 12,000 kcal per kilogram.

Furthermore, "nozzle aperture and gas pressure are important to determine the size of the firepower. LPG pressure is relatively large and the flow rate is fast." Take the gas furnace as an example: "The nozzle of the barrel gas furnace is more natural gas furnace The nozzle is small. 』In order to achieve the same heating value, the gas furnace using liquefied petroleum gas has a small gas output nozzle and the gas furnace using natural gas has a large gas output and a large nozzle. However, if the barreled gas water heaters and gas furnaces with smaller diameter nozzles are changed to natural gas with lower pressure and heat value, the firepower will not be strong due to the small gas output. Conversely, if a natural gas water heater is installed in a barrel of gas, the consequences will be more serious, because the nozzle diameter of the natural gas is relatively large, and the pressure in the barrel is relatively large. Once the liquefied petroleum gas is too large, it will be ignited. Excessive fuel waste occurs, and incomplete combustion is prone to cause carbon accumulation at the bottom of the pot. In the worst case, the fire may be caused by the fire being too strong, especially the water heater is even more dangerous.

If so, it is common practice to match gas nozzles with different apertures due to different heating values of natural gas and liquefied petroleum gas. Please refer to Figure 1 (A) for a natural gas nozzle and 1 (B) for a liquefied petroleum gas nozzle. The calorific value of natural gas is small, so it needs a large gas output, so its nozzle hole X is also large. On the other hand, because the heat value of liquefied petroleum gas is large, only a small gas volume is needed to get the expected combustion effect, so its nozzle hole Y It is small, and if you want to change the source of gas use in the future, it is very inconvenient for users to buy gas nozzles with different apertures, and even for those who do not understand natural gas and LPG, it is necessary to connect the corresponding aperture gas nozzles. Therefore, the above-mentioned danger occurs because of the wrong nozzle; therefore, the inventor has invented a kind of barrel gas or natural gas that can respond to two different heat value pressures in order to solve the above problems caused by the conventional nozzle. Nozzle structure for regulating air volume.

The object of the present invention is to provide a nozzle structure with adjustable air volume, so as to respond to gas sources with different heating values.

Another object of the present invention is to facilitate production at the manufacturing end, reduce inventory, and facilitate inventory at the sales end, and reduce costs. At the time of installation, adjust the calorific value of gas or gas that fits the size of the barrel gas or natural gas. (Or) No need to make any subsequent adjustments for best security.

In order to achieve the foregoing object, the nozzle structure capable of adjusting air volume according to the present invention is applied to various types of gas appliances, and mainly includes: a nozzle unit having an air outlet end provided at one end of the nozzle and an air inlet end provided at the other end. An elastic plug device, a preset space, and a stop ring member compatible with part of the preset space are provided in order from the air outlet end to the air inlet end, and a penetration from the air outlet end to the inlet is provided. A gas guide air passage; and a hole regulating valve, which is a block with a predetermined thickness and is accommodated in a part of the preset space and is in close contact with the elastic plug device and the abutment ring member. The hole regulating valve has a first through hole and a second through hole having a smaller diameter than the first through hole, and a considerable distance is maintained between the first through hole and the second through hole; thereby, when the hole regulating valve is rotated When the first through hole corresponds to the air passage and the second through hole corresponds to the elastic plug device, the gas flow will be increased. When the hole adjustment valve is turned, the second through hole corresponds to the air passage and the When the first through hole corresponds to the elastic plug device The reduction of the gas flow.

Preferably, the elastic plug device is sandwiched between the air guide channel and the inner wall of the nozzle unit, and is composed of a spring and a pressing ball.

Preferably, the nozzle unit is further provided with a strip-shaped opening corresponding to the coupling position of the hole regulating valve, and the strip opening is such that the side wall of the hole regulating valve is exposed outside the nozzle unit tube.

Preferably, the side wall of the hole regulating valve is further provided with at least one hole groove, for a lever to be inserted from the outside of the nozzle unit through the strip-shaped opening.

Preferably, there is a connection member provided on the side of the air inlet end and connected with the abutment ring and having a thread, and the air passage is also connected through the connection member from the air inlet port.

Preferably, the nozzle unit further has a screw and a corresponding screwing screw hole, and the screw hole is communicated and drilled through a wall of the nozzle unit and a part of the stop ring.

The invention has at least the following effects, mainly by turning the hole regulating valve by a predetermined angle, so as to regulate the first through hole and the second through hole to communicate with the air passage respectively, so as to adjust the gas intake amount The efficiency of the system is based on the operating principle of the mechanism to respond to gas heat sources (natural gas and liquefied petroleum gas) with different heating values.

X‧‧‧ Natural gas nozzle hole

Y‧‧‧ LPG gas nozzle hole

20‧‧‧ Nozzle Unit

21‧‧‧Air outlet

22‧‧‧Air inlet

23‧‧‧Elastic plug device

231‧‧‧Spring

232‧‧‧ tight sphere

24‧‧‧ preset space

25‧‧‧ Stop ring

26‧‧‧Airway

27‧‧‧ strip opening

28‧‧‧ Screw

29‧‧‧ screw hole

30‧‧‧hole regulating valve

31‧‧‧First through hole

32‧‧‧Second through hole

33‧‧‧hole slot

34‧‧‧ lever

40‧‧‧Connector

FIG. 1A is a gas nozzle conventionally applied to natural gas.

FIG. 1B shows a conventional gas nozzle for liquefied petroleum gas.

FIG. 2 is an exploded perspective view of a preferred embodiment of the present invention.

FIG. 3 is a perspective perspective view of a configuration for increasing a gas volume according to a preferred embodiment of the present invention.

FIG. 4 is a cross-sectional view of a configuration for increasing a gas amount in a preferred embodiment of the present invention.

FIG. 5 is a perspective view of the air reduction configuration of a preferred embodiment of the present invention.

FIG. 6 is a cross-sectional view of the air reduction configuration of a preferred embodiment of the present invention.

Please refer to FIG. 2 to FIG. 6. A specific preferred embodiment of the present invention is a nozzle structure capable of adjusting air volume, which is mainly composed of a nozzle unit 20 and a hole regulating valve 30, wherein: the nozzle unit 20 has a An air outlet end 21 provided at one end of the nozzle unit 20 and an air inlet end 22 provided at the other end. From the air outlet end 21 to the air inlet end 22, an elastic plug device 23, a preset space 24, and a Compatible with a part of the abutment ring member 25 in the preset space 24 and an air passage 26 penetrating from the air outlet end 21 to the air inlet end 22; the hole regulating valve 30 is formed with a predetermined thickness The block is accommodated in a part of the preset space and is in close contact with the elastic plug device and the abutment ring member at the same time. The hole regulating valve has A first through-hole and a second through-hole having a smaller diameter than the first through-hole, and a considerable distance is maintained between the first through-hole and the second through-hole; as in the above-mentioned structure, its configuration feature is that the hole is adjusted The valve 30 serves as a gas volume adjustment function on the air passage 26. When the first through-hole 31 communicates with the air passage 26, "as shown in Figs. 3 and 4," it will increase the gas flow rate. When the through-hole 32 communicates with the air passage 26, "as shown in Figs. 5 and 6", the gas flow rate will be reduced.

The elastic plug device 23 is sandwiched between the air passage 26 and the inner wall of the nozzle unit 20, and is composed of a spring 231 and a pressing ball 232 that abuts one end of the hole regulating valve 30. In addition, the pressing ball 232 may be partially inserted into the first through hole 31 or the second through hole 32, so that the hole regulating valve 30 is fixed so as not to rotate arbitrarily.

Regarding the mechanism of how to adjust the hole adjustment valve 30, in a preferred embodiment of the present invention, a strip-shaped opening 27 opened on the outer side wall of the nozzle unit 20 and corresponding to the coupling position of the hole adjustment valve 30 is used, and The strip-shaped opening 27 can expose the side wall of the hole adjustment valve 30 outside the tube of the nozzle unit 20; and the side wall of the hole adjustment valve 30 is further provided with a hole groove 33 for a lever 34 from the nozzle unit 20 The outside is inserted through the strip-shaped opening 26. If it is installed so that the user can turn the lever 34 by turning the lever 34, the hole regulating valve 30 can be rotated 45, 90, 135, 180, 270 degrees freely. To achieve the effect of switching the first through-hole 31 and the second through-hole 32 to communicate with the air passage 26, it is worth mentioning that the shift lever 34 is not a necessary component of the present invention, but only a preferred implementation of the present invention. The example is provided to improve the convenience of the user. If the operation mode of the lever 34 is omitted, the user uses a suitable tool to turn the hole regulating valve 30 exposed in the strip opening 26, that is, Can achieve the same effect of regulating gas volume.

Furthermore, in order to install the present invention on a gas output device, in the preferred embodiment, there is a connection provided on the side of the air inlet end 22 and connected to the abutment ring member 25 and having a thread. Piece 40, and the air passage 26 is also connected from the inlet end 22 and penetrates the connecting piece 40.

Furthermore, in view of the nozzle structure with adjustable air volume according to the present invention, the nozzle 20 is detachable. In this preferred embodiment, a screw 28 and a corresponding screw hole 29 are used. Moreover, the screw hole 29 is cut through the pipe wall of the nozzle unit 20 and a part of the abutment ring member 25, so that the bolt is engaged, and the nozzle unit 20 and the detachable abutment are locked by the screw.环 间 件 25。 25 between the pieces.

As mentioned above, the structure of a preferred embodiment of the present invention and its application state mainly have two effects: (1) the hole adjustment valve 30 which can adjust the air intake volume is adjusted by turning the hole The valve 30 switches the first through hole 31 and the second through hole 32 to connect the air passage 26 respectively, so as to achieve the effect of adjusting the gas intake volume, and according to the operating principle of the mechanism to respond to gas heat sources (natural gas and (Liquefied petroleum gas); and (2) the detachable nozzle structure 20, so that users do not need to rely on gas dealers to send technicians to the house for repair or replacement, they can disassemble and adjust their own gas structure nozzle device.

Claims (6)

A nozzle structure with adjustable air volume is applied to gas appliances. The nozzle structure with adjustable air volume includes a nozzle unit having an air outlet end provided at one end of the nozzle unit and an air inlet end provided at the other end. The air outlet end is sequentially provided with an elastic plug device, a preset space and a stop ring member compatible with part of the preset space, and a penetrating from the air outlet end to the air inlet. And a hole regulating valve, which is a block with a predetermined thickness and is accommodated in a part of the preset space while closely abutting the elastic plug device and the abutment ring member, the hole The regulating valve has a first through-hole and a second through-hole having a smaller diameter than the first through-hole, and a considerable distance is maintained between the first through-hole and the second through-hole; the nozzle unit is further provided with a corresponding hole. A strip-shaped opening at the position where the regulating valve is combined; the side wall of the hole-regulating valve is further provided with at least one hole slot for a lever to be inserted from the outside of the nozzle unit through the strip-shaped opening; thereby, when borrowing the The lever adjusts the hole regulating valve to make the first port When the air passage corresponds to the air passage and the second through hole corresponds to the elastic plug device, the gas flow will increase. When the hole adjustment valve is rotated by the lever, the second through hole corresponds to the air passage and the first When the through hole corresponds to the elastic plug device, the gas flow will be reduced. The nozzle structure with adjustable air volume according to item 1 of the scope of patent application, wherein the elastic plug device is sandwiched between the air guide channel and the inner wall of the nozzle unit and is composed of a spring and a pressing sphere. According to the nozzle structure with adjustable air volume described in item 1 of the scope of patent application, wherein the strip-shaped opening is such that the side wall of the hole regulating valve is exposed outside the nozzle unit tube. According to the nozzle structure with adjustable air volume described in item 1 of the scope of patent application, there is a connection member provided on the inlet end side and connected with the abutment ring member and having a thread, and the air passage is also The air inlet port is connected through the connecting member. According to the nozzle structure with adjustable air volume described in item 1 of the scope of the patent application, the nozzle unit further has a screw and a corresponding screw hole, and the screw hole is connected to the nozzle unit pipe wall and part of the abutment ring. Between pieces. According to the nozzle structure with adjustable air volume described in item 1 of the scope of patent application, wherein the hole adjusting valve is rotated by a predetermined angle to switch the first through hole and the second through hole corresponding to the air passage.