CN211120023U

CN211120023U - Gas distributor for water heater

Info

Publication number: CN211120023U
Application number: CN201921528916.9U
Authority: CN
Inventors: 王启栋; 梁稳; 周高云
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-07-28
Anticipated expiration: 2029-09-16

Abstract

A fuel gas distributor for a water heater comprises a distributor body, wherein a first fuel gas chamber and a second fuel gas chamber which are mutually independent are arranged in the distributor body, and a first gas inlet and a plurality of first nozzles which are arranged in a straight line are arranged on the wall of the first fuel gas chamber; a second air inlet and a plurality of second nozzles which are arranged in a straight line are arranged on the wall of the second gas chamber, and the number of the first nozzles is greater than that of the second nozzles; the method is characterized in that: first gas chamber is including being equipped with the first air inlet chamber of first air inlet with be equipped with the first air outlet cavity of first nozzle, a plurality of first nozzles are followed the length direction in first air outlet cavity is arranged in a word, and the middle part setting of the end orientation a plurality of first nozzles of giving vent to anger in first air inlet cavity. The utility model relates to a gas distributor for water heater can make the gas that gets into in the gas chamber disperse to each nozzle more evenly.

Description

Gas distributor for water heater

Technical Field

The utility model belongs to the technical field of gas heater accessory technique and specifically relates to a gas distributor for water heater.

Background

The gas distributor is widely applied to gas water heaters and used for guiding gas passing through the switch valve to enter the nozzle and the combustor for combustion. The water heater control system controls the on-off of the gas valve through calculation according to the water inlet temperature, the set water outlet temperature and the water flow, and determines the number of nozzles to give out gas so that the gas participates in combustion.

Through looking into, chinese utility model patent that patent number is CN201720420991.8 (the grant bulletin number is CN206803166U) discloses a fall gas distributor of making an uproar, including casing and demountable installation apron on the casing, should fall the inside two independent gas chambers that form of gas distributor of making an uproar, casing one side be equipped with respectively with two communicating two air inlets of gas passageway, the casing opposite side be equipped with respectively with two communicating a plurality of nozzles in gas chamber, and the nozzle quantity that sets up in left gas chamber is more than the nozzle quantity that sets up the gas chamber on the right side. This make an uproar gas distributor falls nozzle quantity in the left side gas cavity is more, and the air inlet in this gas cavity is close to the right side nozzle setting, and the air inlet is far away with the left nozzle distance of setting in the gas cavity of left side, and the gas that enters into in the gas cavity from the air inlet is difficult to the homodisperse to each nozzle in the short time, leads to the unable sufficient gas of blowout of partial nozzle to be used for igniteing, makes local high temperature appear in the heat exchanger, influences the homogeneity of water heater leaving water temperature.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the first technical problem that provides a gas distributor for water heater to foretell technical current situation, can make the gas that gets into in the gas passageway disperse to each nozzle more evenly.

The utility model provides a technical scheme that above-mentioned first technical problem adopted does: a fuel gas distributor for a water heater comprises a distributor body, wherein a first fuel gas chamber and a second fuel gas chamber which are mutually independent are arranged in the distributor body, and a first gas inlet and a plurality of first nozzles which are arranged in a straight line are arranged on the wall of the first fuel gas chamber;

a second air inlet and a plurality of second nozzles which are arranged in a straight line are arranged on the wall of the second gas chamber, and the number of the first nozzles is greater than that of the second nozzles;

the method is characterized in that:

first gas chamber is including being equipped with the first air inlet chamber of first air inlet with be equipped with the first air outlet cavity of first nozzle, a plurality of first nozzles are followed the length direction in first air outlet cavity is arranged in a word, and the middle part setting of the end orientation a plurality of first nozzles of giving vent to anger in first air inlet cavity.

Through setting up towards a plurality of first nozzle middle parts with the end of giving vent to anger in first gas chamber, not only can shorten the gas that gets into in the first gas chamber and disperse the flow path to the first nozzle that sets up at both sides tip from first gas chamber, the speed difference of equilibrium and gas dispersion to other first nozzles, the distance that can also make the gas dispersion to the first nozzle that sets up at the first both ends of giving vent to anger chamber length direction is roughly equal, make the gas can diffuse to each first nozzle more evenly.

In a further design, a first diffusion cavity is arranged between the first air inlet cavity and the first air outlet cavity, and the cross section area of the first diffusion cavity is gradually increased along the flowing direction of the fuel gas; the second gas cavity comprises a second gas inlet cavity, a second diffusion cavity and a second gas outlet cavity, the second gas inlet is formed in the wall of the second gas inlet cavity, the second nozzles are arranged in a straight line along the length direction of the second gas outlet cavity, and the cross section area of the second diffusion cavity is gradually increased along the flowing direction of gas. More preferably, the air outlet end of the second air inlet cavity is arranged towards the middle of the plurality of second nozzles.

In order to facilitate the uniform diffusion of the fuel gas to each nozzle, a plurality of first nozzles are uniformly arranged on the wall of the first gas outlet cavity at intervals, and a plurality of second nozzles are uniformly arranged on the wall of the second gas outlet cavity at intervals.

In a further design, a spoiler for changing the flowing direction of the fuel gas is arranged in at least one of the first fuel gas chamber and the second fuel gas chamber.

The turbulent flow piece comprises a first baffle arranged in a first gas cavity and a second baffle arranged in a second gas cavity, the first baffle is arranged along the length direction of the first gas outlet cavity, and a gap for gas circulation exists between at least one side end part of the first baffle along the length direction of the first gas outlet cavity and the cavity wall of the first gas cavity, so that the gas entering the first gas cavity can bypass the first baffle and be dispersed to each first nozzle; the second baffle plate structure is the same as the first baffle plate structure. The flowing direction of the fuel gas is changed by arranging the first baffle and the second baffle, so that the flowing paths of the fuel gas in the first fuel gas chamber and the second fuel gas chamber can be regulated and controlled, and the uniform dispersion of the fuel gas is facilitated.

The first baffle is arranged in the first air outlet cavity, and the length of the first baffle is greater than the distance between two adjacent first nozzles; the second baffle is arranged in the second air outlet cavity, and the length of the second baffle is larger than the distance between two adjacent second nozzles.

In a further design, a first slot for the first baffle to be inserted is formed in the wall of the first air outlet cavity, and a second slot for the second baffle to be inserted is formed in the wall of the second air outlet cavity.

In a further design, the first baffle is arranged in the middle of the front of the first nozzles, and the second baffle is arranged in the middle of the front of the second nozzles. The gas can be prolonged and the gas is dispersed to the flow path in the middle of the first nozzle from the gas outlet end of the first gas inlet cavity, so that the speed of the gas dispersed to each first nozzle is more uniform.

In order to facilitate production and processing, the distributor body comprises a shell and a cover plate connected with the shell in a sealing mode, and the first air inlet, the second air inlet, the first nozzle, the second nozzle, the first baffle, the second baffle, the first slot and the second slot are arranged in the shell.

Further, the number of the first nozzles is twice as many as the number of the second nozzles. More preferably, the number of the first nozzles is 10, and the number of the second nozzles is 5.

Compared with the prior art, the utility model has the advantages of: the gas outlet end of the first gas inlet cavity is arranged towards the middle parts of the first nozzles, so that the flow path of gas entering the first gas inlet cavity from the first gas inlet cavity to the first nozzles arranged at the end parts can be shortened, the speed difference between the gas and the other first nozzles can be balanced, the distance between the gas and the first nozzles arranged at the two ends of the first gas outlet cavity in the length direction can be approximately equal, and the gas can be more uniformly diffused to the first nozzles; the turbulence pieces are arranged in the first gas chamber and the second gas chamber, so that the flowing direction of gas flow entering the gas can be changed, the flowing path of the gas dispersed from the gas outlet end of the gas inlet cavity to the middle part of the nozzle is prolonged, the gas is further dispersed to be more uniform, each nozzle sprays enough gas for ignition, local high temperature in a heat exchanger is avoided, and the temperature of outlet water is more uniform; simple structure, and convenient production and processing.

Drawings

Fig. 1 is a front view of an embodiment of the present invention;

fig. 2 is a rear view of an embodiment of the present invention;

FIG. 3 is a perspective view of the embodiment of the present invention with the cover plate removed;

fig. 4 is a sectional view at a in fig. 3.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1-4, the preferred embodiment of the present invention.

As shown in fig. 1 to 3, the gas distributor for a water heater includes a distributor body 100, a baffle, a socket, and the like.

As shown in fig. 1-2, the dispenser body 100 includes a housing 11 and a cover plate 12 sealingly coupled to the housing 11. The sealing connection mode of the shell 11 and the cover plate 12 can refer to the mature prior art, generally adopts screw fixation connection, and is sealed by a sealing ring, which is not described herein again.

As shown in fig. 1 to 4, the distributor body 100 is provided with a first gas chamber 13 and a second gas chamber 14 which are independent of each other. The wall of the first gas chamber 13 is provided with a first gas inlet 131 and a plurality of first nozzles 132 arranged in a straight line, the first gas inlet 131 is used for connecting an external gas source, and the first nozzles 132 are used for ejecting gas for ignition. Similarly, a second gas inlet 141 and a plurality of second nozzles 142 arranged in a row are provided on the wall of the second gas chamber 14. Wherein the number of the first nozzles 132 is twice as many as the number of the second nozzles 142. In this embodiment, the number of the first nozzles 132 is 10, and the number of the second nozzles 142 is 5.

As shown in fig. 3, the first gas chamber 13 includes a first gas inlet chamber 133, a first diffusion chamber 134 and a first gas outlet chamber 135 which are connected in sequence, the first gas inlet 131 is disposed on the wall of the first gas inlet chamber 133, the first nozzle 132 is disposed on the first gas outlet chamber 135, and the cross-sectional area of the first diffusion chamber 134 gradually increases along the gas flowing direction. The second gas chamber 14 comprises a second gas inlet cavity 143, a second diffusion cavity 144 and a second gas outlet cavity 145 which are connected in sequence, the second gas inlet 141 is arranged on the wall of the second gas inlet cavity 143, the second nozzle 142 is arranged on the second gas outlet cavity 145, and the cross-sectional area of the second diffusion cavity 144 gradually increases along the flowing direction of the fuel gas.

As shown in fig. 3, the plurality of first nozzles 132 are disposed at regular intervals on the wall of the first outlet chamber 135. The plurality of first nozzles 132 are arranged in line along the length direction of the first outlet chamber 135, and the outlet end of the first inlet chamber 133 is disposed toward the middle of the plurality of first nozzles 132. The plurality of second nozzles 142 are arranged on the wall of the second outlet cavity 145 at regular intervals. A plurality of second nozzles 142 are arranged in line along the length of the second outlet chamber 145. In this embodiment, since the number of the second nozzles 142 in the second gas chamber 14 is small, the arrangement of the facing direction of the gas outlet end of the second gas inlet cavity 143 has a small influence on the uniform dispersion of the gas in the second gas chamber 14, and therefore, the gas outlet end of the second gas inlet cavity 143 is arranged facing the second nozzle 142 closest to the first gas outlet cavity 135, which can reduce the volume of the gas distributor for the water heater. In other embodiments, the gas outlet end of the second gas inlet chamber 143 may be disposed toward the middle of the plurality of second nozzles 142.

As shown in fig. 3, a spoiler for changing the flow direction of the gas is provided in the first gas chamber 13. Specifically, the spoiler includes a first baffle 21 disposed within the first gas chamber 13. The first baffle 21 is arranged along the length direction of the first air outlet cavity 135, and a gap between the end parts of the two ends of the first baffle 21 along the length direction of the first air outlet cavity 135 and the cavity wall of the first gas cavity 13 forms a gas channel. The first baffle 21 is disposed in the first air outlet cavity 135, specifically, the housing 1 is provided with a first slot 136 located in the first air outlet cavity 135, the bottom of the first baffle 21 is inserted into the first slot 136 and bonded to the inner wall of the first slot 136, and the top of the first baffle 21 abuts against the inner wall of the cover plate 12. The first baffle 21 is arranged in the front middle of the first nozzle 132, and the length of the first baffle 21 in the length direction of the first outlet cavity 135 is greater than the distance between two adjacent first nozzles 132.

As shown in fig. 3, the spoiler further includes a second baffle 22 disposed in the second gas chamber 14. The second baffle 22 is arranged along the length direction of the second air outlet cavity 145, and a gas channel is formed by a gap between the end parts of the two ends of the second baffle 22 along the length direction of the second air outlet cavity 145 and the cavity wall of the second gas cavity 14. The second baffle 22 is disposed in the second air outlet cavity 145, specifically, the housing 1 is further provided with a second slot 146 located in the second air outlet cavity 145, the bottom of the second baffle 22 is inserted into the second slot 146 and is bonded with the inner wall of the second slot 146, and the top of the second baffle 22 abuts against the inner wall of the cover plate 12. The second baffle 22 is disposed in the front middle of the second nozzle 142, and the length of the second baffle 22 along the length direction of the second outlet cavity 145 is greater than the distance between two adjacent second nozzles 142.

As shown in fig. 1 to 4, the working principle of the gas distributor for the water heater in the present embodiment is as follows: when the small fire combustion is needed, the fuel gas is introduced into the second fuel gas chamber 14 from the second gas inlet 141, the fuel gas sequentially flows into the second gas inlet cavity 143 and the second diffusion cavity 144 to enter the second gas outlet cavity 145, and the gas flow direction is changed by the second baffle plate 22, so that the fuel gas is dispersed to each second nozzle 142 from the second baffle plate 22 along the fuel gas channel outside the two end portions of the second gas outlet cavity 145 in the length direction. When the medium fire is needed for combustion, fuel gas is introduced into the first fuel gas chamber 13 from the first gas inlet 131, the fuel gas sequentially flows into the first gas inlet cavity 133 and the first diffusion cavity 134 into the first gas outlet cavity 135, the gas flow direction is changed by the first baffle 21, so that the fuel gas is dispersed to each first nozzle 132 from the first baffle 21 along the fuel gas channel outside the end parts of the two ends of the first gas outlet cavity 135 in the length direction, and the gas outlet end of the first gas inlet cavity 133 is arranged towards the first baffle 21, so that the fuel gas can be uniformly dispersed to each first nozzle 132. When a fire is required, fuel gas is introduced into the first and second fuel gas chambers 13 and 14 from the first and

second inlet ports

131 and 141, respectively, and dispersed into the first and

second nozzles

132 and 142, respectively.

Claims

1. A fuel gas distributor for a water heater comprises a distributor body (100), wherein a first fuel gas chamber (13) and a second fuel gas chamber (14) which are mutually independent are arranged in the distributor body (100), and a first air inlet (131) and a plurality of first nozzles (132) which are arranged in a straight line are arranged on the wall of the first fuel gas chamber (13);

a second air inlet (141) and a plurality of second nozzles (142) which are arranged in a straight line are arranged on the wall of the second gas chamber (14), and the number of the first nozzles (132) is greater than that of the second nozzles (142);

the method is characterized in that:

the first gas cavity (13) comprises a first gas inlet cavity (133) provided with the first gas inlet (131) and a first gas outlet cavity (135) provided with the first nozzles (132), the first nozzles (132) are arranged in a straight line along the length direction of the first gas outlet cavity (135), and the gas outlet end of the first gas inlet cavity (133) faces the middle of the first nozzles (132).

2. The gas distributor for a water heater according to claim 1, wherein: a first diffusion cavity (134) is further arranged between the first air inlet cavity (133) and the first air outlet cavity (135), and the cross section area of the first diffusion cavity (134) is gradually increased along the flowing direction of fuel gas; the second gas chamber (14) comprises a second gas inlet cavity (143), a second diffusion cavity (144) and a second gas outlet cavity (145), the second gas inlet (141) is arranged on the wall of the second gas inlet cavity (143), the second nozzles (142) are arranged in a straight line along the length direction of the second gas outlet cavity (145), and the cross-sectional area of the second diffusion cavity (144) is gradually increased along the gas flowing direction.

3. The gas distributor for a water heater according to claim 2, wherein: the first nozzles (132) are uniformly arranged on the wall of the first air outlet cavity (135) at intervals, and the second nozzles (142) are uniformly arranged on the wall of the second air outlet cavity (145) at intervals.

4. The gas distributor for a water heater according to claim 3, wherein: at least one of the first gas chamber (13) and the second gas chamber (14) is internally provided with a flow disturbing piece for changing the flowing direction of the gas.

5. The gas distributor for a water heater according to claim 4, wherein: the flow disturbing piece comprises a first baffle (21) arranged in a first gas cavity (13) and a second baffle (22) arranged in a second gas cavity (14), the first baffle (21) is arranged along the length direction of the first gas outlet cavity (135), and a gap for gas circulation exists between at least one side end part of the first baffle (21) along the length direction of the first gas outlet cavity (135) and the cavity wall of the first gas cavity (13), so that gas entering the first gas cavity (13) can bypass the first baffle (21) and be dispersed to each first nozzle (132); the second baffle (22) has the same structure as the first baffle (21).

6. The gas distributor for a water heater according to claim 5, wherein: the first baffle plate (21) is arranged in the first air outlet cavity (135), and the length of the first baffle plate (21) is greater than the distance between two adjacent first nozzles (132); the second baffle plate (22) is arranged in the second air outlet cavity (145), and the length of the second baffle plate (22) is larger than the distance between two adjacent second nozzles (142).

7. The gas distributor for a water heater according to claim 6, wherein: a first slot (136) for the first baffle (21) to be inserted is formed in the wall of the first air outlet cavity (135), and a second slot (146) for the second baffle (22) to be inserted is formed in the wall of the second air outlet cavity (145).

8. The gas distributor for a water heater according to claim 6, wherein: the first baffle (21) is arranged in the front middle of the first nozzles (132), and the second baffle (22) is arranged in the front middle of the second nozzles (142).

9. The gas distributor for a water heater according to claim 8, wherein: the distributor body (100) comprises a shell (1) and a cover plate (2) connected with the shell (1) in a sealing mode, wherein the first air inlet (131) and the second air inlet (141), the first nozzle (132) and the second nozzle (142), the first baffle plate (21) and the second baffle plate (22), the first inserting groove (136) and the second inserting groove (146) are arranged in the shell (1).

10. The gas distributor for a water heater according to claim 1, wherein: the number of the first nozzles (132) is twice the number of the second nozzles (142).