CN212006259U

CN212006259U - Gas distribution device and gas water heater using same

Info

Publication number: CN212006259U
Application number: CN202020216248.2U
Authority: CN
Inventors: 刘筱倩
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2020-11-24
Anticipated expiration: 2030-02-27

Abstract

The utility model relates to a gas distribution device and a gas water heater using the same, wherein the gas distribution device comprises a shell, a cavity is arranged in the shell, and an air inlet which is in fluid communication with the cavity is arranged on the shell; a plurality of nozzles disposed in series along substantially the same line on the housing, the nozzles being in fluid communication with the chamber; the adjusting piece is provided with at least one air outlet, each air outlet can be correspondingly communicated with one nozzle in a fluid mode, and the caliber of each air outlet is smaller than that of the air outlet end of the corresponding nozzle; and the driving mechanism is connected with the adjusting piece and drives the air outlet of the adjusting piece and the air outlet end of the nozzle to be correspondingly communicated or far away from the air outlet end of the nozzle. The utility model provides a nozzle quantity does not increase, has only set up the regulating part that corresponds with the nozzle, can realize the regulation of gas air output, can adapt to the combustion load under the low admission pressure.

Description

Gas distribution device and gas water heater using same

Technical Field

The utility model belongs to the technical field of gas heater, concretely relates to gas distributor and applied device's gas heater.

Background

In the areas with insufficient natural gas supply in winter, the gas inlet pressure of the gas water heater is lower than the standard pressure, the mixing ratio of the gas quantity and the air is not adjusted during combustion, so that the combustion of the water heater cannot reach the standard load, and in winter with very low water inlet temperature, the water outlet temperature is lower, so that the bathing conditions of users cannot be met.

Because the gas intake is lower than the standard value, there are two treatment methods:

1. the method can properly improve the water outlet temperature by reducing the rotating speed of the fan to adjust the mixing ratio of the fuel gas and the air, but can bring two problems: firstly, the air intake is changed, the opening degree of a valve port of a gas proportional valve reaches the maximum, the gas quantity cannot be increased, and the improvement effect is not obvious; secondly, when the rotating speed of the fan is reduced and the external wind pressure is large, the wind resistance of the machine is poor, the machine is easy to extinguish, and the water in the bathing process is suddenly cooled.

2. The front pipe with a larger nozzle hole is used for increasing the gas inflow, so that the water outlet temperature in winter can be increased. The method has the following disadvantages: firstly, a service technician needs to disassemble the machine on the door to replace the front pipe nozzle, and the maintenance cost is high; secondly, the air inflow of the corresponding summer fuel gas is increased, the original water inlet temperature is about 30 ℃, the water outlet temperature reaches 45-50 ℃, and the bathing temperature is too hot. To this problem, chinese utility model patent publication's "gas control device of gas heater" that patent number is CN201120241481.7 (publication number is CN202171339U), including intake pipe, jet-propelled pipe, solenoid valve, the jet-propelled nozzle that sets up on the jet-propelled pipe comprises nozzle and the general nozzle that uses in summer, and the solenoid valve is installed on the jet-propelled pipe and is connected with the water heater controller electricity, and the nozzle passes through jet-propelled pipe and intake pipe intercommunication in summer, and the general nozzle that uses passes through jet-propelled pipe, solenoid valve and intake pipe intercommunication. In summer, when the bathing water that needs the temperature low, the user can send the instruction through the operating panel of water heater and give the controller, close the solenoid valve, at this moment the gas directly gets into the jet-propelled pipe from the intake pipe, then spout with the nozzle through summer, get into the combustor burning, because the aperture of nozzle is less for summer, spun gas load is lower, can further reduce the minimum temperature rise under the summer situation, make the user can comfortable shower when the high temperature in summer, because the gas valve core aperture does not reduce, the event can not take place from the flame phenomenon. When in winter or in the condition of needing high-temperature hot water, a user can send an instruction to the controller through the operation panel of the water heater, the electromagnetic valve is opened, and at the moment, gas directly enters the gas jet pipe to be jetted from the summer nozzle, enters the gas jet pipe through the electromagnetic valve to be jetted from the general nozzle, namely, the summer nozzle and the general nozzle are both jetted with gas to carry out full-load combustion.

From the above, this gas heater is through only opening the nozzle for summer or the nozzle for summer and general nozzle are opened simultaneously and are adjusted the gas volume, satisfy summer and winter to the different demands of temperature, but lead to the nozzle quantity more like this, and then lead to the volume of gas distributor (aka front tube) great.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the first technical problem that will solve is to prior art's current situation, provides one kind and need not to set up the gas distributor that the more nozzle of a quantity also can adapt to the combustion load under the different admission pressure.

The utility model aims to solve the second technical problem to prior art's current situation, provide one kind and need not to set up the more nozzle of quantity and also can adapt to the combustion load under the different admission pressure's the gas heater of above-mentioned gas distributor of application.

The utility model provides a technical scheme that above-mentioned first technical problem adopted does: a gas distribution device comprises

The device comprises a shell, a first valve, a second valve and a third valve, wherein a cavity is formed in the shell, and an air inlet communicated with the cavity in a fluid mode is formed in the shell;

a plurality of nozzles disposed in series along substantially the same line on the housing, the nozzles being in fluid communication with the chamber;

it is characterized by also comprising

The adjusting piece is provided with at least one air outlet, each air outlet can be correspondingly communicated with one nozzle in a fluid mode, and the caliber of each air outlet is smaller than that of the air outlet end of the corresponding nozzle;

and the driving mechanism is connected with the adjusting piece and drives the air outlet of the adjusting piece and the air outlet end of the nozzle to be correspondingly communicated or far away from the air outlet end of the nozzle.

In order to make the adjusting piece and the nozzle well fit, the adjusting piece is provided with at least one adjusting piece, each adjusting piece is provided with one air outlet, the adjusting piece is cylindrical and can be embedded into the corresponding nozzle, and the air outlet of the adjusting piece is correspondingly communicated with the air outlet of the nozzle in a state that the adjusting piece is embedded into the nozzle. The adjusting parts are arranged in a plurality, each adjusting part corresponds to one nozzle, and the flow of the corresponding nozzle is accurately adjusted; and each adjusting piece is cylindrical, and the cross section of the nozzle is also substantially cylindrical, so that the adjusting pieces and the nozzle are well adapted to adjust the gas outlet quantity.

The adjusting part can have various structural forms, in order to further enable the adjusting part and the nozzle to be well adapted to adjust the gas output, preferably, the nozzle comprises a large diameter part and a small diameter part which are sequentially connected in the gas flow outflow direction, the adjusting part comprises a small cylinder and a large cylinder which are integrally connected, the small cylinder is correspondingly embedded into the small diameter part, the large cylinder is correspondingly embedded into the large diameter part, the inner diameter of the small diameter part is the diameter of the gas outlet end of the nozzle, and the inner diameter of the small cylinder is the diameter of the gas outlet of the adjusting part.

In order to enable the adjusting piece to be embedded in the nozzle and to be positioned well, preferably, an embedding groove surrounding the periphery of the nozzle is formed in the inner wall of the shell, the periphery of the adjusting piece is integrally connected with one end of an annular body capable of being embedded in the embedding groove, and the other end of the annular body is turned over towards a notch of the embedding groove to form a flanging. The flanging and the annular body play a positioning role, and the adjusting piece is prevented from radially shaking to influence the control on the gas flow.

The drive assembly may have a variety of configurations, and preferably the drive mechanism comprises

The moving piece is connected with the adjusting piece;

the driving assembly is connected with the moving piece and pushes the moving piece to move in the direction away from the nozzle;

the elastic piece keeps the moving piece moving towards the direction of the nozzle.

In order to reduce the number of the driving assemblies and the elastic pieces, the moving pieces are in a strip shape and extend along the arrangement direction of the adjusting pieces, all the adjusting pieces are connected with the moving pieces, at least one group of driving assemblies are arranged, and at least one elastic piece acts on the moving pieces. Therefore, each adjusting part is not required to be correspondingly provided with a group of driving mechanisms to drive, the driving mechanisms with small quantity can be arranged to realize the movement of all moving parts, and in addition, the moving parts are integrally connected, so that the synchronism of the mutual movement is also improved.

Preferably, the moving member is an iron core, and the driving assembly is an electromagnetic coil.

In order to facilitate the arrangement of the driving mechanism, the driving mechanism is positioned outside the shell, the moving part is connected with the corresponding adjusting part through the connecting rod, and the shell is provided with a through hole for the connecting rod to extend into the shell. For setting up actuating mechanism inside the casing, can more conveniently set up outside the casing to moving member and actuating mechanism set up outside the casing, can not exert an influence to the flow of air current in the casing yet.

In order to prevent gas leakage caused by outflow of gas from the through hole, a first sealing ring sleeved on the connecting rod is arranged in the through hole.

The utility model provides a technical scheme that above-mentioned second technical problem adopted does: a gas heater using above-mentioned gas distributor, its characterized in that: the gas water heater also comprises a burner and a valve bank used for controlling the gas inlet amount, wherein the burner is in fluid communication with the nozzle, and the valve bank is in fluid communication with the gas inlet.

Compared with the prior art, the utility model has the advantages that: the utility model discloses a setting up the regulating part, be equipped with the gas outlet that can correspond the intercommunication with the nozzle on the regulating part, like this when the pressure is low in winter, when water heater leaving water temperature can not reach the settlement temperature, actuating mechanism drives the regulating part and keeps away from the nozzle, because the bore of the end of giving vent to anger of nozzle self is great, for the state that the gas outlet is facing to the nozzle, the gas flow path area increases, the gas flow increases, the combustion situation becomes good, water heater leaving water temperature risees, satisfy user's bathing requirement in winter; when the air supply condition of a user is changed or high outlet water temperature is not needed in summer, the driving mechanism controls the air outlet of the adjusting part to face the nozzle, at the moment, the gas outlet amount is controlled by the air outlet, and the gas outlet amount is small due to the small caliber of the air outlet; according to the invention, the number of the nozzles is not increased, and only the adjusting parts corresponding to the nozzles are arranged, so that the gas outlet quantity can be adjusted, and the gas outlet quantity can adapt to the combustion load under low air inlet pressure; in addition, the structure of the gas distribution device for adjusting the gas flow does not need to reduce the rotating speed of the fan, and the wind resistance is not attenuated; and the regulation of the gas flow can be realized without changing the shape of the original nozzle hole, and the capability of injecting and absorbing primary air by gas cannot be influenced.

Drawings

Fig. 1 is a schematic structural diagram of a gas distribution device according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 in another direction;

FIG. 3 is a schematic view of the housing of FIG. 1 with the cover removed;

FIG. 4 is a cross-sectional view of FIG. 1 (with the adjustment member disengaged from the nozzle);

FIG. 5 is a cross-sectional view of FIG. 1 (with the adjuster inserted into the nozzle);

FIG. 6 is a cross-sectional view of the adjustment member of FIG. 5;

FIG. 7 is a schematic view of the adjustment member of FIG. 5;

FIG. 8 is a schematic structural view of the connecting rod of FIG. 5;

FIG. 9 is a schematic view of a gas water heater using the gas distribution device of FIG. 1;

FIG. 10 is a flow chart of a combustion control method for a water heater.

Detailed Description

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

As shown in fig. 1 to 9, the gas distribution device of the preferred embodiment includes a housing 1, a nozzle 2, an adjuster 3, and a drive mechanism 4.

As shown in fig. 1, a cavity 11 is formed inside a casing 1, an air inlet 12 and a plurality of nozzles 2 sequentially arranged along the same straight line are formed in the casing 1, the air inlet 12 and the nozzles 2 are both in fluid communication with the cavity 11, the air inlet 12 is used for allowing fuel gas to enter the casing 1, and the nozzles 2 are used for allowing the fuel gas to flow out of the casing 1.

As shown in fig. 3, in the present embodiment, a partition 113 is provided in the housing 1 to divide the chamber 11 into a first chamber 111 and a second chamber 112, correspondingly, two air inlets 12 are provided, and are respectively in fluid communication with the first chamber 111 and the second chamber 112, a part of the nozzles 2 are located in the first chamber 111, and another part of the nozzles 2 are located in the second chamber 112, that is, the water heater is in a three-stage combustion mode, the first stage: the gas flows out at the nozzle 2 located in the first chamber 111, and the second section: the gas flows out at the nozzle 2 located in the second chamber 112, and the third section: there is a gas outflow at all nozzles 2, which is prior art.

As shown in fig. 4, 5, 6, and 7, in the present embodiment, the number of the adjusting members 3 is the same as that of the nozzles 2, each adjusting member 3 is cylindrical and can be correspondingly inserted into one nozzle 2, each adjusting member 3 has one air outlet 31, and the caliber of each air outlet 31 is smaller than that of the air outlet end 21 of the corresponding nozzle 2. In the state that the adjusting piece 3 is embedded into the nozzle 2, the air outlet 31 of the adjusting piece 3 is correspondingly communicated with the air outlet end 21 of the nozzle 2.

In this embodiment, the nozzle 2 includes a large diameter portion 22 and a small diameter portion 23 which are connected in sequence along the airflow outflow direction, the adjusting member 3 includes a small cylinder 34 and a large cylinder 35 which are connected integrally, the small cylinder 34 is embedded into the small diameter portion 23 correspondingly, the large cylinder 35 is embedded into the large diameter portion 22 correspondingly, the inner diameter of the small diameter portion 23 is the diameter of the air outlet end 21 of the nozzle 2, and the inner diameter of the small cylinder 34 is the diameter of the air outlet 31 of the adjusting member 3.

In addition, the inner wall of the shell 1 is provided with a caulking groove 13 surrounding the periphery of the nozzle 2, the periphery of the adjusting piece 3 is integrally connected with one end of an annular body 32 capable of being embedded in the caulking groove 13, the other end of the annular body 32 is turned over towards the notch of the caulking groove 13 to form a flanging 33, a second sealing ring 5 is arranged between the flanging 33 and the annular body 32, and the second sealing ring 5 plays a sealing role.

The driving mechanism 4 is used for driving the air outlet 31 of the adjusting piece 3 and the air outlet end 21 of the nozzle 2 to be correspondingly communicated or driving the adjusting piece 3 to be far away from the air outlet end 21 of the nozzle 2. The driving mechanism 4 comprises a moving member 41, a driving assembly 42 and an elastic member 43, the moving member 41 is in a bar shape and extends along the direction of the adjusting member 3 at intervals, the driving assembly 42 and the moving member 41 are in driving connection and push the moving member 41 to move towards the direction away from the nozzle 2, and the elastic member 43 makes the moving member 41 keep the trend of moving towards the nozzle 2. In this embodiment, there are two sets of driving members 42, and two elastic members 43 acting on the moving member 41. The moving member 41 is an iron core, the driving assembly 42 is an electromagnetic coil, and the electromagnetic coil may be an electromagnetic coil in the prior art, and includes a coil 421 and an iron valve core 422.

In this embodiment, the driving mechanism 4 is disposed outside the casing 1, each adjusting member 3 is connected to the moving member 41 through the connecting rod 6, a through hole 14 for the connecting rod 6 to extend into the casing 1 is formed in the casing 1, and a first sealing ring 7 sleeved on the connecting rod 6 is disposed in the through hole 14. As shown in fig. 8, one end of the connecting rod 6 is provided with a mounting block 61, the mounting block 61 is connected with the moving member 41, the other end of the connecting rod 6 extends into the adjusting member 3 and is connected with the adjusting member 3 through a connecting strip 62, and the inner wall of the adjusting member 3 is provided with an insertion hole 36 for inserting the connecting strip 62.

Each group of driving assemblies 42 is installed on a mounting frame 8, the mounting frame 8 is U-shaped and installed on the outer wall of the casing 1 and opens towards the outer wall of the casing 1, and two ends of the elastic member 43 are respectively connected with the mounting frame 8 and the moving member 41.

As shown in fig. 9 and 10, in this embodiment, the gas water heater using the gas distribution device further includes an electric controller 9, a burner and a valve set (e.g., a solenoid valve) for controlling the gas inlet amount, the burner is in fluid communication with the nozzle 2, the valve set is in fluid communication with the gas inlet 12, and the coil 421 is controlled by the electric controller 9.

The control method of the gas distribution device comprises the following steps:

(1) when the gas pressure is insufficient and the gas flow is reduced, the electric controller 9 calculates the current yield A, and if the yield is less than or equal to a set value (the set value is 0.8 times of the standard yield), the step two is executed; if the yield is greater than the set value, the current combustion state is continuously maintained;

(2) the electric controller 9 outputs a current signal to the coil 421, the iron core is attracted by the valve core 422 and moves towards the direction far away from the nozzle 2, the adjusting part 3 is separated from the nozzle 2, the fuel gas flows out from the gas outlet end 21 of the nozzle 2, the fuel gas flow is increased and the water outlet temperature is increased because of the caliber of the gas outlet 31 of the caliber large-diameter adjusting part 3 at the gas outlet end 21 of the nozzle 2, then the electric controller 9 judges the yield at the moment, and if the yield is less than or equal to a set value (the set value is 0.85 times of standard yield at the moment, and has a difference value of 0.05 times of yield with the condition of entering low air pressure, the frequent action of the coil 421 caused by unstable air pressure is avoided), the second; if the yield is greater than the set value, executing a step three;

(3) the electric controller 9 stops outputting a current signal to the coil 421, the valve core 422 releases the attraction to the iron core, the iron core moves towards the nozzle 2 under the action of the elastic part 43 to enable the adjusting part 3 to be embedded into the nozzle 2, at the moment, the fuel gas flows out through the gas outlet 31 of the adjusting part 3, and the water heater recovers to the normal mode for combustion because the caliber of the gas outlet 31 of the adjusting part 3 is smaller than that of the gas outlet end 21 of the nozzle 2.

According to the national standard, the yield of the water heater is calculated by the following formula: (t1-t2) x V/25, t1 is the water outlet temperature, t2 is the water inlet temperature, and V is the water inlet flow, which can be referred to GB6932-2015 household gas instantaneous water heater, and the standard yield is referred to the national standard.

Therefore, the electric controller can judge the condition of the external air pressure, such as whether the external air pressure is low or not according to the current yield.

The driving mechanism 4 is not limited to the structure of the embodiment, and may be, for example, an electric push rod to drive the moving member 41 to reciprocate; the adjusting member 3 is not limited to the embodiment, and for example, the adjusting member 3 may have a plate shape capable of blocking all the nozzles 2, and the adjusting member 3 may be provided with the air outlets 31 corresponding to the nozzles 2 one by one.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion or/and be transported to the second portion, and may be directly communicated between the first portion and the second portion, or indirectly communicated between the first portion and the second portion via at least one third member, which may be a fluid passage such as a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber allowing the fluid to flow therethrough, or a combination thereof.

Claims

1. A gas distribution device comprises

The device comprises a shell (1), a cavity (11) is arranged in the shell (1), and an air inlet (12) communicated with the cavity (11) in a fluid mode is formed in the shell (1);

a plurality of nozzles (2) arranged on the shell (1) along the same straight line, wherein the nozzles (2) are communicated with the chamber (11) in a fluid mode;

it is characterized by also comprising

The adjusting piece (3) is provided with at least one air outlet (31), each air outlet (31) can be correspondingly communicated with one nozzle (2) in a fluid mode, and the caliber of each air outlet (31) is smaller than that of the air outlet end (21) of the corresponding nozzle (2);

and the driving mechanism (4) is connected with the adjusting piece (3) and drives the air outlet (31) of the adjusting piece (3) and the air outlet end (21) of the nozzle (2) to be correspondingly communicated or far away from the air outlet end (21) of the nozzle (2).

2. The gas distribution device according to claim 1, characterized in that: the number of the adjusting pieces (3) is at least one, each adjusting piece (3) is provided with one air outlet (31), each adjusting piece (3) is cylindrical and can be embedded into the corresponding nozzle (2), and the air outlet (31) of each adjusting piece (3) is correspondingly communicated with the air outlet end (21) of each nozzle (2) in the state that the adjusting pieces (3) are embedded into the corresponding nozzles (2).

3. The gas distribution device according to claim 2, characterized in that: the nozzle (2) comprises a large-diameter part (22) and a small-diameter part (23) which are sequentially connected along the airflow outflow direction, the adjusting part (3) comprises a small barrel (34) and a large barrel (35) which are integrally connected, the small barrel (34) is correspondingly embedded into the small-diameter part (23), the large barrel (35) is correspondingly embedded into the large-diameter part (22), the inner diameter of the small-diameter part (23) is the caliber of the air outlet end (21) of the nozzle (2), and the inner diameter of the small barrel (34) is the caliber of the air outlet (31) of the adjusting part (3).

4. The gas distribution device according to claim 2, characterized in that: the inner wall of the shell (1) is provided with a caulking groove (13) which is surrounded on the periphery of the nozzle (2), the periphery of the adjusting piece (3) is integrally connected with one end of an annular body (32) which can be embedded in the caulking groove (13), and the other end of the annular body (32) is turned over towards the notch of the caulking groove (13) to form a flanging (33).

5. A gas distribution device according to any one of claims 2 to 4, wherein: the driving mechanism (4) comprises

A moving member (41) connected to the adjusting member (3);

the driving component (42) is connected with the moving piece (41) and pushes the moving piece (41) to move towards the direction away from the nozzle (2);

and an elastic member (43) which acts on the moving member (41) to keep the moving member (41) moving towards the nozzle (2).

6. The gas distribution device according to claim 5, characterized in that: the moving parts (41) are strip-shaped and extend along the arrangement direction of the adjusting parts (3), all the adjusting parts (3) are connected with the moving parts (41), at least one group of driving components (42) is arranged, and at least one elastic part (43) is arranged.

7. The gas distribution device according to claim 6, characterized in that: the moving member (41) is an iron core, and the driving component (42) is an electromagnetic coil.

8. The gas distribution device according to claim 5, characterized in that: actuating mechanism (4) are located casing (1) outside, and each regulating part (3) all links to each other through connecting rod (6) and moving member (41), set up on casing (1) and supply perforation (14) that connecting rod (6) stretched into in casing (1).

9. The gas distribution device according to claim 8, characterized in that: a first sealing ring (7) sleeved on the connecting rod (6) is arranged in the through hole (14) of the shell (1).

10. A gas water heater using the gas distribution device of any one of claims 1 to 9, wherein: the gas water heater also comprises a burner and a valve group used for controlling the gas inlet amount, wherein the burner is communicated with the nozzle (2) in a fluid mode, and the valve group is communicated with the gas inlet (12) in a fluid mode.