CN215675822U

CN215675822U - Upper pumping direct-current low-nitrogen square tube and gas water heating equipment

Info

Publication number: CN215675822U
Application number: CN202121643634.0U
Authority: CN
Inventors: 艾穗江; 孙智; 邓海燕; 陈仕超
Original assignee: Guangdong Macro Gas Appliance Co Ltd
Current assignee: Guangdong Macro Gas Appliance Co Ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2022-01-28
Anticipated expiration: 2031-07-19

Abstract

The utility model discloses an upward pumping direct-current low-nitrogen square tube, which comprises: the nozzle mounting structure comprises a main body, a left cavity, a middle cavity and a right cavity, wherein the left cavity, the middle cavity and the right cavity are formed on the main body; the main body is of an integrally formed structure, corresponding forming openings are reserved on the cavities, and plugging covers for sealing are respectively arranged on the forming openings; the gas proportional valve is characterized in that a first connecting joint bent downwards is integrally formed on a forming port of the cavity positioned in the middle section, and the first connecting joint is used for connecting a gas proportional valve; and the forming ports of the cavity positioned on the left side and the right side are respectively integrally formed with a second connector for mounting the electromagnetic valve. The first connecting head for connecting the gas proportional valve is arranged on the cavity positioned in the middle section, and the installation of the gas proportional valve is integrated, so that multiple sealing connection is avoided structurally, the gas proportional valve is safe and reliable in use, and the cost is lower; can realize four segmentation burning, inside gas flow is even, easily realizes the stable burning of dense and thin flame.

Description

Upper pumping direct-current low-nitrogen square tube and gas water heating equipment

Technical Field

The utility model relates to the technical field of gas water heating equipment, in particular to an upper pumping direct-current low-nitrogen square pipe and gas water heating equipment.

Background

At present, most of gas water heaters on the market are limited by a burner structure, the pollutant emission problem is serious day by day, a large amount of CO can be discharged by a common water heater, pollutants such as NOx can be generated, the pollution of the NOx is more serious than that of the CO, a small part of low-nitrogen gas water heaters generally adopt a thick and thin burner structure, most of the low-nitrogen gas water heaters are of a forced-blowing structure, a fan of the forced-blowing structure is positioned below the burner, the inside of a combustion cavity is positive pressure during working, the requirement on the sealing performance of the whole machine is higher, the production and manufacturing cost is greatly increased, in order to overcome the internal resistance of the whole machine and ensure the uniformity of the air volume, the air speed of a forced-blowing machine is also higher, noise can be increased, too much heat can be brought away, the heat exchange efficiency is reduced, the positive pressure combustion is unstable, phenomena such as resonance can be easily generated, and the user experience is seriously influenced. The conventional square tube structure of the low-nitrogen water heater is complex, a pressure plate end cover is basically adopted, the requirement on a sealing surface sealed by an annular rubber ring is high, and the manufacturing cost of a die and the like is high.

The applicant earlier proposed a chinese utility model patent application with publication number CN208253962U, which discloses a low nitrogen gas water heater square tube, comprising: the nozzle comprises a main body, an air inlet and two rows of nozzle mounting holes, wherein the air inlet and the two rows of nozzle mounting holes are formed in the main body; the sealing plug is characterized in that the main body is of an integrally formed structure, a plurality of forming openings are formed in the main body, and sealing plugs are respectively installed on the forming openings. Although the low-nitrogen gas water heater side pipe that this patent application discloses has solved the gas leakage hidden danger that adopts the sealed bringing of large tracts of land rubber pad, nevertheless need pass through the intermediate structure switching when its is connected with gas proportional valve, has increased the risk of gas leakage. In addition, the main air inlet is positioned on one side of the square pipe, and only three-section work can be carried out during work.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model aims to provide an upward-pumping direct-flow low-nitrogen square pipe which can be directly connected with a fuel gas proportional valve and can realize four sections.

The utility model also aims to provide the gas water heating equipment with the upward pumping direct-current low-nitrogen square pipe.

In order to achieve the purpose, the utility model adopts the following technical scheme.

An upward-pumping direct-current low-nitrogen square tube comprises: the nozzle mounting structure comprises a main body, a left cavity, a middle cavity and a right cavity, wherein the left cavity, the middle cavity and the right cavity are formed on the main body; the main body is of an integrally formed structure, corresponding forming openings are reserved on the cavities, and plugging covers for sealing are respectively arranged on the forming openings; the gas proportional valve is characterized in that a first connecting joint bent downwards is integrally formed on a forming port of the cavity positioned in the middle section, and the first connecting joint is used for connecting a gas proportional valve; and the forming ports of the cavity positioned on the left side and the right side are respectively integrally formed with a second connector for mounting the electromagnetic valve.

More preferably, the nozzle mounting holes are arranged in two rows, one row of the nozzle mounting holes being for mounting a large nozzle and the other row of the nozzle mounting holes being for mounting a small nozzle.

More preferably, the cavity on the left side includes a strip cavity corresponding to each row of the nozzle mounting holes, and the two strip cavities are connected to form a cavity through a connecting channel.

More preferably, the cavity on the right side comprises a strip-shaped cavity corresponding to each row of nozzle mounting holes, and the two strip-shaped cavities are connected into a cavity through a connecting channel.

More preferably, the number ratio of the cavity in the middle to the nozzle mounting holes in the cavity on the left side and the cavity on the right side is 2:6: 3.

More preferably, each second connector is communicated with the first connector through a corresponding pipeline, and the electromagnetic valve is connected and controls the communication and disconnection of the pipelines.

More preferably, the first connector is a connection elbow bent downward at 90 °, a connection flange is formed at a connection end of the first connector, and a connection hole is formed in the connection flange.

The utility model provides a gas water heater, includes the combustor, its characterized in that be equipped with as above arbitrary one on the combustor take out direct current low nitrogen side's pipe on install the gas proportional valve on taking out the first connector of direct current low nitrogen side's pipe on install the solenoid valve on taking out the second connector of direct current low nitrogen side's pipe on.

More preferably, the gas water heater is a gas water heater or a gas wall-hanging stove.

The utility model has the beneficial effects that: the first connecting head for connecting the gas proportional valve is arranged on the cavity positioned in the middle section, and the installation of the gas proportional valve is integrated, so that multiple sealing connection is avoided structurally, the gas proportional valve is safer and more reliable in use, and the cost is lower; the main part includes left, middle, right three cavity, and the air inlet is located the middle section and makes this side pipe can realize the four segmentation burning, makes inside gas flow even, can easily realize dense and thin flame stable combustion, effectively reduces the NOx pollutant, and manufacturing process is simple.

Drawings

Fig. 1 is a cross-sectional view of an upward-pumping direct-current low-nitrogen square tube provided by the utility model.

Fig. 2 is a perspective view of the upper pumping direct current low nitrogen square tube provided by the present invention.

Fig. 3 is a front view of the upper pumping direct current low nitrogen square tube provided by the present invention.

Fig. 4 shows a cross-sectional view along B-B of fig. 3.

Fig. 5 shows a cross-sectional view along C-C of fig. 3.

Reference numerals indicate the same.

1: a main body, 2: nozzle mounting hole, 3: second connector, 4: molding port, 5: first connector, 6: an electromagnetic valve.

Detailed Description

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the feature, and in the description of the utility model, "at least" means one or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the present application, unless otherwise specified or limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.

The following describes the embodiments of the present invention with reference to the drawings of the specification, so that the technical solutions and the advantages thereof are more clear and clear. The embodiments described below are exemplary and are intended to be illustrative of the utility model, but are not to be construed as limiting the utility model.

The first embodiment.

As shown in fig. 1 to 5, an upward-pumping dc low-nitrogen square tube includes: the nozzle assembly comprises a main body 1, a left cavity, a middle cavity and a right cavity which are formed on the main body, and a plurality of nozzle mounting holes 2 which are respectively arranged on the cavities; the main body 1 is of an integrally formed structure, a corresponding forming port 4 is reserved on each cavity, and a blocking cover for sealing is respectively arranged on each forming port 4; the gas proportional valve is characterized in that a first connecting head 5 which is bent downwards is integrally formed on a forming port of the cavity positioned in the middle section, and the first connecting head 5 is used for connecting a gas proportional valve; the forming ports of the cavity at the left side and the right side are respectively and integrally formed with a second connector 3 for installing an electromagnetic valve 6.

It should be noted that the nozzle mounting holes 2 are arranged in two rows, one row of the nozzle mounting holes is used for mounting a large nozzle, and the other row of the nozzle mounting holes is used for mounting a small nozzle.

The cavity body positioned on the left side comprises strip-shaped cavities corresponding to each row of the nozzle mounting holes, and the two strip-shaped cavities are connected into one cavity body through a connecting channel. The cavity body positioned on the right side comprises strip-shaped cavities corresponding to each row of the nozzle mounting holes, and the two strip-shaped cavities are connected into one cavity body through a connecting channel.

In this embodiment, the number ratio of the cavity located in the middle to the cavity located on the left side to the nozzle mounting holes on the cavity located on the right side is 2:6: 3. When the four-section combustion chamber works, the middle cavity is normally opened, at least one of the left cavity and the right cavity can be opened or closed completely by controlling the two electromagnetic valves 6, and further four-section combustion of 2:5:8:11 is realized.

It should be noted that each second connector 3 is communicated with the first connector 5 through a corresponding pipeline, and the electromagnetic valve 6 is connected to control the communication and disconnection of the pipelines.

The first connecting head 5 is a connecting elbow bent downwards by 90 degrees, a connecting flange is formed at the connecting end of the first connecting head 5, and a connecting hole is formed in the connecting flange.

Further, the blanking cover and the blanking cover mounting opening 4 are sealed in a die-casting matching mode. The sealing structure is firm and reliable.

Further, the cap is a metal cap.

Example two.

The utility model provides a gas hot water equipment, includes the combustor, its characterized in that be equipped with on the combustor take out direct current low nitrogen side pipe as embodiment one on, on take out direct current low nitrogen side pipe's first connector install the gas proportional valve, on take out direct current low nitrogen side pipe's second connector on install the solenoid valve.

It should be noted that the gas water heater is a gas water heater or a gas wall-hanging stove.

The first embodiment provides a gas-fired water heating apparatus with all the advantages of the first embodiment, which are not described herein again. The specific structure of the gas-fired water heating apparatus may adopt the existing or future structure, and will not be described in detail herein.

It will be appreciated by those skilled in the art from the foregoing description of construction and principles that the utility model is not limited to the specific embodiments described above, and that modifications and substitutions based on the teachings of the art may be made without departing from the scope of the utility model as defined by the appended claims and their equivalents. The details not described in the detailed description are prior art or common general knowledge.

Claims

1. An upward-pumping direct-current low-nitrogen square tube comprises: the nozzle mounting structure comprises a main body, a left cavity, a middle cavity and a right cavity, wherein the left cavity, the middle cavity and the right cavity are formed on the main body; the main body is of an integrally formed structure, corresponding forming openings are reserved on the cavities, and plugging covers for sealing are respectively arranged on the forming openings; the gas proportional valve is characterized in that a first connecting joint bent downwards is integrally formed on a forming port of the cavity positioned in the middle section, and the first connecting joint is used for connecting a gas proportional valve; and the forming ports of the cavity positioned on the left side and the right side are respectively integrally formed with a second connector for mounting the electromagnetic valve.

2. The square tube of claim 1, wherein the nozzle mounting holes are arranged in two rows, one row of the nozzle mounting holes being used for mounting large nozzles and the other row of the nozzle mounting holes being used for mounting small nozzles.

3. The upward pumping direct-current low-nitrogen square tube of claim 2, wherein the cavity on the left side comprises strip-shaped cavities corresponding to each row of the nozzle mounting holes, and the two strip-shaped cavities are connected into a cavity through a connecting channel.

4. The square pipe of claim 2, wherein the right cavity comprises a strip cavity corresponding to each row of the nozzle mounting holes, and the two strip cavities are connected to form a cavity through a connecting channel.

5. The upward pumping direct-current low-nitrogen square tube according to claim 1, wherein the number ratio of the cavity in the middle to the nozzle mounting holes in the cavity on the left side to the nozzle mounting holes in the cavity on the right side is 2:6: 3.

6. The upward pumping direct-current low-nitrogen square tube of claim 1, wherein each second connector is communicated with the first connector through a corresponding pipeline, and the electromagnetic valve is connected to control the communication and disconnection of the pipelines.

7. The upward pumping direct-current low-nitrogen square pipe according to claim 1, wherein the first connecting joint is a connecting elbow bent downward at 90 degrees, a connecting flange is formed at the connecting end of the first connecting joint, and a connecting hole is formed in the connecting flange.

8. The gas water heating equipment comprises a burner and is characterized in that the burner is provided with an upper pumping direct-current low-nitrogen square pipe according to any one of claims 1 to 7, a gas proportional valve is installed on a first connecting head of the upper pumping direct-current low-nitrogen square pipe, and an electromagnetic valve is installed on a second connecting head of the upper pumping direct-current low-nitrogen square pipe.

9. The gas-fired water heating apparatus according to claim 8, wherein the gas-fired water heating apparatus is a gas water heater or a gas wall-hanging stove.