CN110375092B - Gas distribution device and gas water heater using same - Google Patents
Gas distribution device and gas water heater using same Download PDFInfo
- Publication number
- CN110375092B CN110375092B CN201910565611.3A CN201910565611A CN110375092B CN 110375092 B CN110375092 B CN 110375092B CN 201910565611 A CN201910565611 A CN 201910565611A CN 110375092 B CN110375092 B CN 110375092B
- Authority
- CN
- China
- Prior art keywords
- rotary drum
- drum
- gas
- gear ring
- strip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
- F16K11/085—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
- F16K11/0856—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug having all the connecting conduits situated in more than one plane perpendicular to the axis of the plug
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/107—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using fluid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
Abstract
The invention relates to a gas distribution device and a gas water heater using the same, wherein the gas distribution device comprises a shell, a rotary drum and a stepping driving mechanism, a first gas inlet and a nozzle are arranged on the shell, the rotary drum and the stepping driving mechanism form a blocking mechanism for blocking the nozzle, the rotary drum is positioned in an inner cavity of the shell and axially extends along the direction of the nozzle at intervals, at least two strip-shaped through holes which are axially arranged along the rotary drum at intervals are arranged on the side wall of the rotary drum, and each strip-shaped through hole circumferentially extends along the rotary drum and corresponds to one nozzle; the stepping driving mechanism drives the rotary drum to rotate step by step, so that the strip-shaped through holes intermittently rotate to the corresponding nozzles. According to the invention, the rotary drum is arranged, the strip-shaped through holes are formed in the rotary drum, each nozzle corresponds to one strip-shaped through hole, and the nozzles at different positions and different numbers are correspondingly communicated with the strip-shaped through holes along with the rotation of the rotary drum, so that a plurality of nozzles can be opened at one time without being opened one by one, and the gas flow adjusting mode is convenient, rapid and flexible.
Description
Technical Field
The invention belongs to the technical field of fluid heaters with heat generating devices, and particularly relates to a gas distribution device and a gas water heater using the same.
Background
The gas water heater or the wall-hanging stove has a defect that when the gas water heater or the wall-hanging stove is used in summer, even if the gas is adjusted to the minimum gas supply amount, the water temperature still feels overheated when a user takes a shower, and the water temperature is not hot enough in winter. In order to solve the above problems, many manufacturers adopt a gas distributor (also known as a gas sectionalizer or a front pipe), that is, a control valve is adopted to control different nozzles on a gas distribution pipe to fire and burn, so as to achieve the combustion fire power of the water heater and improve the application range of the water heater.
As shown in the patent of "a gas water heater" disclosed in the chinese utility model with patent No. ZL201721254505.6 (publication No. CN207196901U), the fire grate is composed of a first fire grate group, a second fire grate group and a third fire grate group, the first fire grate group and the third fire grate group are connected with a gas proportional valve through a first gas branch pipe, the second fire grate group is connected with the gas proportional valve through a second gas branch pipe, the first gas branch pipe and the second gas branch pipe are connected in parallel and are respectively provided with a second electromagnetic valve and a third electromagnetic valve, and the third fire grate group is controlled by a fourth electromagnetic valve.
The above patents have drawbacks in that: the number of adjustable stages of combustion firepower is small (namely, the firepower adjustment grade is small), the adjustment gradient is too large, the control on the gas flow is not accurate enough, the phenomenon that the lowest water temperature is too high or the highest water temperature is too low still easily occurs, the problems of region difference, season difference and individual difference of people are difficult to meet, and the use comfort of users is influenced; in addition, the solenoid valve is bulky and costly, and the existing gas flow distribution device is yet to be further improved in consideration of the internal space and cost of the water heater.
In order to solve the problems, the invention patent of China with the patent number ZL201810676132.4 (with the publication number CN108758628A) discloses a burner and a fire power automatic adjusting method, the burner comprises a flow distribution system and a combustion system, the flow distribution system comprises a gas main pipe, a piston arranged in the gas main pipe, a screw rod with one end connected with the piston, a driven bevel gear meshed with the screw rod, a driving bevel gear meshed with the driven bevel gear and a servo motor driving the driving bevel gear to rotate, the gas main pipe is of a pipeline structure, a plurality of nozzles are arranged on the gas main pipe, the center of each nozzle is provided with a hole, the gas is responsible for one end and is the inlet end, and the gas is responsible for the other end and installs driven conical gear, driven conical gear center is equipped with the internal thread and matches with the external screw thread of lead screw, the axial displacement can be responsible for along the gas to the lead screw.
The displacement of piston depends on the rotatory angle of servo motor in this patent, there is linear proportional relation between the two, the displacement of piston has decided the nozzle quantity of participating in the burning, the size of gas flow has also been decided for the adjustable section number of burning firepower is many, it is little to adjust the gradient, it is more meticulous to make the temperature control range, gas flow control is accurate, the water heater can adjust the nozzle quantity of participating in the burning according to particular case, avoid the phenomenon that the temperature is too high or low, more selections are provided for the user.
However, the nozzles are opened sequentially from right to left by translating the piston, that is, the nozzles can only be opened or closed one by one, but cannot be opened or closed a plurality of times at one time, so that the adjustment of the gas flow is not flexible, convenient and quick; in addition, because the opening of different nozzle numbers is realized through the translation of one piston, in order to prevent the gas from entering the nozzle positioned on the left side of the piston from the piston or the sealing ring, no gap is needed between the outer wall of the piston or the sealing ring and the inner wall of the gas main pipe, the adjustment of the gas flow can only be realized through the movement of the piston, and the piston or the sealing ring is easy to wear, so that the sealing performance is poor; in addition, in order to ensure that the piston or the sealing ring moves smoothly, lubricating grease is usually coated on the piston and the sealing ring, but the nozzle is easily blocked by the grease; and if the piston is worn and loses the plugging function, the gas flow regulation of the whole device fails.
In addition, the motor drives the gear to finally drive the screw rod to move in a driving mode, the driving mode is not accurate enough in controlling the moving stroke of the screw rod, so that nozzles cannot be accurately plugged, and the cost of the motor is high.
Disclosure of Invention
A first technical problem to be solved by the present invention is to provide a gas distribution device capable of flexibly adjusting the number and position of nozzles to be opened or closed, in view of the above-mentioned prior art.
A second technical problem to be solved by the present invention is to provide a gas distribution device capable of controlling the number of nozzles involved in combustion by one set of driving mechanism, in view of the above-mentioned prior art.
The third technical problem to be solved by the present invention is to provide a gas distribution device with a driving mechanism that can accurately control the movement stroke of the plugging mechanism in view of the above-mentioned prior art.
A fourth technical problem to be solved by the present invention is to provide a gas distribution device with a small occupied space and with a reasonably distributed driving mechanism in space, in view of the above prior art.
A fifth technical problem to be solved by the present invention is to provide a gas water heater using the gas distribution device, which can flexibly adjust the number and the positions of the opened or closed nozzles, in view of the above prior art.
In order to solve the first and second technical problems, the invention adopts the technical scheme that: a gas distribution device comprises
The gas-fuel gas burner comprises a shell, a first side wall and a second side wall, wherein the shell is provided with a hollow inner cavity, the first side wall is provided with at least one first gas inlet for gas to enter, and the second side wall is provided with at least two nozzles arranged at intervals for gas to flow out;
the plugging mechanism is used for plugging the nozzle;
it is characterized in that the plugging mechanism comprises
The rotating drum is positioned in the inner cavity of the shell and axially extends along the direction in which the nozzles are arranged at intervals, the peripheral surface of the rotating drum is always in contact with the second side wall of the shell, and is always kept at an interval with the first side wall of the shell; at least two strip-shaped through holes which are arranged at intervals along the axial direction of the rotary drum are arranged on the side wall of the rotary drum, and each strip-shaped through hole extends along the circumferential direction of the rotary drum and corresponds to one nozzle;
and the stepping driving mechanism acts on the rotary drum to drive the rotary drum to rotate step by step, so that the strip-shaped through holes intermittently rotate to the corresponding nozzles.
In order to solve the third technical problem, the invention adopts the technical scheme that: step-by-step actuating mechanism including locating the drive assembly of rotary drum one end, along the axial relatively the rotary drum from far away to near ground in proper order including:
the fixed gear ring is fixed relative to the shell, the first end surface of the fixed gear ring facing the rotary drum is in a sawtooth shape, each sawtooth comprises an axial straight section and an inclined section forming an included angle with the axial direction,
a movable gear ring which is arranged in the fixed gear ring, has a wavy shape with undulation towards the first end surface of the rotary drum and can axially move relative to the fixed gear ring,
the first end of the rotating column is positioned in the rotating drum, the periphery of the rotating column is provided with convex teeth, the inner peripheral surface of the rotating drum is provided with tooth grooves capable of allowing the corresponding convex teeth to axially move in the tooth grooves, the second end of the rotating column extends out of the rotating drum, the periphery of the rotating column is provided with spaced convex blocks, the end surfaces of the convex blocks are inclined planes, and the convex blocks can be in contact with the first end surface of the movable gear ring and the first end surface of the fixed gear ring to enable the rotating column to drive the rotating drum to rotate;
the step driving mechanism further comprises:
the actuating piece acts on the movable gear ring to move the movable gear ring towards the direction close to or away from the rotary drum;
and the elastic piece acts on the rotating column so that the rotating column always has the tendency of moving in the direction away from or close to the rotating drum.
The stepping driving mechanism drives the rotary drum to intermittently rotate, the control on the rotation angle of the rotary drum is accurate, and the plugging reliability of the plugging mechanism is improved. The step driving mechanism can also simply adopt a step motor and a corresponding speed reducing mechanism, but has high cost and large volume compared with the step driving mechanism of the application.
In order to solve the fourth technical problem, the technical scheme adopted by the invention is as follows: the electromagnet is used as an actuating piece and arranged at the first end of the rotary drum, the driving component is arranged at the second end of the rotary drum, the movable gear ring can be attracted by the electromagnet to move towards the direction close to the rotary drum, and the elastic piece is a compression spring and arranged in the rotary drum, so that the rotary column always has the tendency of moving towards the direction far away from the rotary drum.
The actuator, which is intended for intermittent driving of the movable ring gear, may simply be a cam mechanism, but is preferably an electromagnet, with the benefits of: the electromagnet is acted by a magnetic field, and can be separated by a certain distance to act on the movable gear ring, so that the two ends of the rotary drum are more convenient to separately arrange with the driving assembly, the limitation on the structure of the rotary drum per se is minimum, the space arrangement is more reasonable, and the occupied space is small.
In order to enable the movable gear ring to move under the action of the electromagnet, the movable gear ring is made of paramagnetic materials or/and the center of the movable gear ring is connected with a paramagnetic connecting rod which axially extends into the rotary drum and extends into the center of the coil of the electromagnet. The advantage of providing a connecting rod is: prevent to lead to the movable gear ring can not effectually be adsorbed by the electro-magnet and remove because of movable gear ring and electro-magnet distance are far away, so through making the connecting rod adsorb the removal by the electro-magnet, and then the connecting rod drives movable gear ring and removes.
In addition, the connecting rod utilizes the hollow structure of the rotary drum, thereby not only enhancing the magnetic attraction effect on the movable gear ring, but also not needing other additional limitations on the structure of the rotary drum.
The first end surface of the movable gear ring is in a wavy shape, namely a rising slope surface and a falling slope surface, and in order to enable the convex block of the rotating column to slide on the slope surface more smoothly and reduce abrasion, the wave crests and the wave troughs of the rising slope surface and the falling slope surface at the joint part can be in a smooth transition shape; however, for the convenience of manufacture, the ascending slope and the descending slope may be pointed at the connection point so that the first end surface of the movable gear ring is integrally serrated, each serration is composed of a second oblique section and a third oblique section both inclined with respect to the axial direction, wherein only the second oblique section of the movable gear ring has an inclined direction identical to that of the first oblique section of the fixed gear ring, and the straight section of the fixed gear ring and the second oblique section of the corresponding movable gear ring form a cross in a radial side view, so that the projection can be more smoothly transited to the first oblique section of the fixed gear ring to continue sliding through sliding on the second oblique section of the movable gear ring, thereby rotating the entire rotating column.
In order to ensure that the lug can simultaneously push the movable gear ring to synchronously move towards the direction far away from the rotary drum when rotating along the first oblique section, the oblique plane of the end surface of the lug is consistent with the first oblique section of the fixed gear ring, the tail end of the oblique plane is in a smooth transition shape, and the lug has enough thickness in the radial direction to be capable of not only being abutted against the second oblique section or the third oblique section of the movable gear ring, but also being abutted against the oblique section of the fixed gear ring. The tail end of the inclined surface of the lug is in a smooth transition shape, so that the lug can move from the wave trough of the wave of the movable gear ring to the third inclined section conveniently.
In order to prevent the movable gear ring from rotating relative to the fixed gear ring, the outer wall of the movable gear ring is provided with a guide block extending axially, and the inner wall of the fixed gear ring is provided with a guide groove capable of accommodating the guide block to slide in the guide groove, so that the movable gear ring can axially move relative to the fixed gear ring. Because the guide block and the guide groove both extend axially, the movable gear ring is ensured to move axially relative to the fixed gear ring, and the relative rotation of the movable gear ring and the fixed gear ring can be prevented.
In order to ensure that the number of opened nozzles can be changed in the rotating process of the rotary drum, the starting ends of all the strip-shaped through holes are positioned on the same straight line parallel to the axis of the rotary drum, and the lengths of at least two of the strip-shaped through holes are different, so that the strip-shaped through holes with different numbers can rotate to the corresponding nozzles along with the rotation of the rotary drum, the regulation on the gas flow is flexible, and the nozzles with different positions and different numbers can be opened.
In order to change the number of the opened nozzles by the rotating angle of the rotating drum once, the difference of the arc lengths of the strip-shaped through holes with different lengths is positively correlated with the stepping rotating angle of the rotating drum, so that the rotating drum acts once, and the strip-shaped through holes with different numbers rotate to the corresponding nozzles.
In order to solve the fifth technical problem, the technical scheme adopted by the invention is as follows: a gas heater using above-mentioned gas distributor, its characterized in that: 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, and the valve group is communicated with the first gas inlet.
Compared with the prior art, the invention has the advantages that: 1. according to the invention, the rotary drum is arranged, the strip-shaped through holes are formed in the rotary drum, each nozzle corresponds to one strip-shaped through hole, and the nozzles at different positions and different numbers are correspondingly communicated with the strip-shaped through holes along with the rotation of the rotary drum, so that a plurality of nozzles can be opened at one time without being opened one by one, and the gas flow regulation mode is convenient, rapid and flexible; 2. because each nozzle corresponds to one strip-shaped through hole, when the nozzle is staggered with the corresponding strip-shaped through hole, the nozzle is blocked by the side wall of the rotary drum, namely, control components (the strip-shaped through hole and the side wall of the rotary drum) for controlling the opening and the closing of each nozzle are mutually independent, even if the working performance of one control component is reduced, other control components can still normally work, the adjustment of the gas flow can still be carried out, and the fault-tolerant rate is high; 3. the invention can realize the regulation of gas flow of a plurality of stages by arranging the strip-shaped through hole corresponding to the nozzle on the side wall of the rotary drum, has simple structure, easy processing and manufacture and no middle transition part, avoids the hidden trouble that the middle transition part is out of order to influence the regulation of the gas flow, and improves the working reliability of the gas distribution device; 4. the invention adopts the stepping driving mechanism to act on the rotary drum, controls the number of the nozzles participating in combustion through the position change of the strip-shaped through hole on the rotary drum, namely, the gas flow can be adjusted by a set of driving mechanism in multiple stages, and the invention has the advantages of less related parts, reduced cost and small occupied space; 5. the driving assembly controls the rotation angle of the rotary drum in a mode that the lug moves along the obliquely arranged oblique section, so that the accuracy of the rotation angle of the rotary drum is improved, the movement stroke of the strip-shaped through hole is accurate, the strip-shaped through hole is guaranteed to move in place, and the reliability of plugging or opening the nozzle is improved; 6. the stepping driving mechanism adopts a structure that the electromagnet is matched with the driving component, and the electromagnet can act on the movable gear ring at a certain distance under the action of the magnetic field, so that the stepping driving mechanism is more convenient to be arranged at two ends of the rotary drum respectively along with the driving component.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a cross-sectional view in another direction of FIG. 1;
FIG. 4 is an exploded view of FIG. 1 with the housing removed;
FIG. 5 is a schematic structural view of the fixed ring gear, the movable ring gear and the connecting rod of FIG. 4;
FIG. 6 is an exploded view of FIG. 5;
FIG. 7 is an exploded view of the mobile ring gear and the rotating post of FIG. 4;
FIG. 8 is a schematic structural view of the drum of FIG. 4;
FIG. 9 is a schematic view of the state of the electromagnet and drive assembly of FIG. 4 (electromagnet de-energized);
FIG. 10 is a schematic view of the electromagnet and drive assembly of FIG. 4 in a state in which the electromagnet is energized and the movable ring gear is at an extreme limit;
FIG. 11 is a schematic view of the state of the electromagnet and drive assembly of FIG. 4 (electromagnet de-energized and rotary post reset);
FIG. 12 is a schematic view of the state of the electromagnet and drive assembly of FIG. 4 (electromagnet de-energized and rotation post reset completed);
fig. 13 is a schematic structural diagram of the gas distribution device of the present embodiment applied to a gas water heater.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 13, the gas distribution device 10 of the present preferred embodiment can be used in a gas water heater or a wall-hanging gas stove, and the present embodiment takes the gas water heater as an example, and the gas water heater includes a burner 101, the gas distribution device 10, and a gas valve group 102 for controlling the gas intake amount.
As shown in fig. 1 to 13, the gas distribution device 10 includes a housing 1, a drum 3 and a step driving mechanism, the housing 1 has a hollow inner cavity 1a, a first side wall 1b of the housing 1 is provided with a first gas inlet 11 for gas to enter, a gas valve set 102 is communicated with the first gas inlet 11, and of course, the number of the first gas inlets 11 may be multiple. At least two nozzles 12 are provided in the left-right direction on the second side wall 1c of the casing 1, and the nozzles 12 are communicated with the burner 101 through which the gas flows out. In this embodiment, the first side wall 1b is a bottom wall of the housing 1, and the second side wall 1c is a front side wall of the housing 1.
The rotary drum 3 and the step driving mechanism constitute a blocking mechanism for blocking the nozzle 12, and as shown in fig. 2 and 3, the rotary drum 3 is provided in the inner cavity 1a of the casing 1, extends axially in the direction of the interval of the nozzle 12, and the outer peripheral surface of the rotary drum 3 is always in contact with the second side wall 1c of the casing 1, so that the rotary drum 3 can always contact the nozzle 12, and the rotary drum 3 is always spaced from the first side wall 1b of the casing 1, so that the rotary drum 3 is prevented from blocking the first gas inlet 11 and blocking the gas from flowing into the casing 1.
As shown in fig. 2 to 4 and 8, at least two strip-shaped through holes 32 are formed in the side wall of the rotary drum 3 at intervals along the axial direction of the rotary drum 3, each strip-shaped through hole 32 extends along the circumferential direction of the rotary drum 3, each strip-shaped through hole 32 corresponds to one nozzle 12, and under the action of the step-by-step driving mechanism, the rotary drum 3 rotates around the axis thereof step by step, so that the strip-shaped through holes 32 intermittently rotate to the corresponding nozzles 12, preferably, at least one strip-shaped through hole 32 is always communicated with the first air inlet 11, so as to prevent no gas from entering the rotary drum 3.
When the strip-shaped through hole 32 rotates to a state of being staggered with the corresponding nozzle 12, the nozzle 12 is blocked by the side wall of the rotary drum 3, and the gas cannot flow out of the shell from the nozzle 12; when the strip-shaped through hole 32 rotates to a state of being communicated with the corresponding nozzle 12, the nozzle 12 is communicated with the chamber of the rotary drum 3, the gas enters the chamber of the rotary drum 3 after entering from the first gas inlet 11, and then flows out through the strip-shaped through hole 32 and the corresponding nozzle 12, and the flowing route of the gas is shown by hollow arrows in fig. 3.
The starting ends of all the strip-shaped through holes 32 are positioned on the same straight line parallel to the axis of the rotary drum 3, at least two of the strip-shaped through holes 32 are different in length, the difference of the arc lengths between the strip-shaped through holes 32 different in length is positively correlated with the stepping rotation angle of the rotary drum 3, so that when the rotary drum 3 rotates for different angles, the strip-shaped through holes 32 different in number rotate to the corresponding nozzles 12, the strip-shaped through holes 32 different in length can be distributed along the axial direction of the rotary drum 3 as required, so as to block the nozzles 12 different in number and different in position, such as 60 degrees rotated by the rotary drum 3, 4 nozzles are opened, 120 degrees rotated by the rotary drum 3, and 6 nozzles are opened. In this embodiment, the difference between the arc lengths of two adjacent strip-shaped through holes 32 is one sixth of a circumference, which is a 60 ° rotation of the drum 3. Otherwise, the electromagnet 4 may need to be energized two or more times to effect the change in the number of openings of the nozzles 12.
The working principle of the gas distribution device of the embodiment is as follows:
when the gas water heater stops operating, the rotary drum 3 is driven to rotate to the position where all the strip-shaped through holes 32 do not correspond to the nozzles 12, and at the moment, the side wall of the rotary drum 3 blocks all the nozzles 12.
When the gas water heater needs maximum load operation, the rotary drum 3 is driven to rotate to the position where all the strip-shaped through holes 32 correspond to the nozzles 12, and at the moment, all the gas nozzles 12 can spray gas.
When the load of the gas water heater is changed, the rotary drum 3 is driven to rotate to the position where the part of the strip-shaped through holes 32 corresponds to the nozzle 12, at the moment, part of the nozzles 12 are provided with gas flow, and the other part of the nozzles 12 are shielded by the side wall of the rotary drum 3.
The drum 3 rotates one revolution, ensuring that the gas nozzles 12 can be turned from all off to all on, and the number of nozzles 12 that are turned on increases when the drum 3 rotates clockwise or counterclockwise. In other words, by rotating the drum 3, the number of the strip-shaped through holes 32 in the drum 3 aligned with the nozzles 12 is changed to vary the amount of gas flow out of the device.
As shown in fig. 2 and fig. 4 to 7, in the present embodiment, the step driving mechanism includes a driving component 5, an actuating component and an elastic component 54, in the present embodiment, the actuating component is an electromagnet 4, the electromagnet 4 is disposed at the first end 3a of the drum 3, the driving component 5 is disposed at the second end 3b of the drum 3, the electromagnet 4 is located outside the housing 1, and the driving component 5 is located inside the housing 1.
The driving component 5 comprises a fixed gear ring 51, a movable gear ring 52 and a rotating column 53, the fixed gear ring 51 is fixedly arranged in the shell 1, the first end surface of the fixed gear ring 51 facing the rotary drum 3 is in a sawtooth shape, each sawtooth comprises an axial straight section 512 and a first inclined section 511 forming an included angle with the axial direction, and the straight section 512 of each sawtooth is connected with the high side of the first inclined section 511 of the sawtooth and the low side of the first inclined section 511 of the adjacent sawtooth. In this embodiment, each first inclined section 511 extends obliquely clockwise (in the top view of fig. 5) along the circumferential direction of the fixed gear ring 51.
The movable gear ring 52 is arranged in the fixed gear ring 51 and can axially move relative to the fixed gear ring 51, the outer wall of the movable gear ring 52 is provided with a guide block 523 which axially extends, the inner wall of the fixed gear ring 51 is provided with a guide groove 513 which can accommodate the guide block 523 to slide in the guide groove, and the guide groove 513 axially extends, so that the movable gear ring 52 can axially move relative to the fixed gear ring 51 and the movable gear ring 52 cannot circumferentially rotate relative to the fixed gear ring 51.
The mobile toothing 52 presents an undulating toothing towards the first end of the drum 3, each toothing being constituted by a second inclined section 521 and a third inclined section 522 both inclined axially with respect to each other, wherein only the second inclined section 521 is inclined in the same direction as the first inclined section 511 of the fixed toothing 51, and the straight section 512 of the fixed toothing 51, viewed radially, forms an intersection with the second inclined section 521 of the corresponding mobile toothing 52. In this embodiment, each second inclined section 521 extends obliquely clockwise (in the top view of fig. 5) along the circumferential direction of the movable ring gear 52.
The center of the movable gear ring 52 is connected with a paramagnetic connecting rod 55 axially extending into the rotary drum 3 and extending into the center of the coil of the electromagnet 4, that is, a first end of the connecting rod 55 is fixedly connected with the center of the movable gear ring 52, a second end of the connecting rod passes through the rotary column 53 and the rotary drum 3 and then extends into the center of the coil of the electromagnet 4, the electromagnet 4 is provided with a limiting member 41 for limiting the moving stroke of the connecting rod 55, and when the second end of the connecting rod 55 abuts against the limiting member 41, the connecting rod 55 moves to the extreme limit. When the electromagnet 4 is energized, the connecting rod 55 is attracted by the electromagnet 4 and moves axially, thereby moving the movable ring gear 52 toward the drum 3. In a state where the movable ring gear 52 is attracted to the electromagnet 4 and positioned at the limit position, the high-side portion of the second inclined section 521 is closer to the drum 3 than the corresponding straight section 512.
Of course, the connecting rod 55 may not be provided, and the movable ring gear 52 is made of paramagnetic material and is directly adsorbed and moved by the electromagnet 4, but in this case, if the distance between the electromagnet 4 and the movable ring gear 52 is too far, the adsorption of the movable ring gear 52 may be deteriorated; the movable gear ring 52 and the connecting rod 55 can be made of paramagnetic materials.
The first end of the rotating column 53 is located in the rotating cylinder 3 and the outer circumference is provided with the convex teeth 532, the inner circumferential surface of the rotating cylinder 3 is provided with the tooth grooves 31 capable of allowing the corresponding convex teeth 532 to axially move in the corresponding positions, so that the rotating column 53 can axially move relative to the rotating cylinder 3 and can drive the rotating cylinder 3 to rotate, in other words, the rotating cylinder 3 does not axially linearly move along with the rotating column 53 and only rotates along with the rotating column 53, and the rotating angles of the rotating cylinder 3 and the rotating column 53 are consistent
The second end of the rotating column 53 extends out of the rotating drum 3, and the periphery of the rotating column 53 is provided with spaced lugs 531, and the lugs 531 have enough thickness in the radial direction to not only contact with the second oblique section 521 or the third oblique section 522 of the movable gear ring 52, but also contact with the first oblique section 511 of the fixed gear ring 51, so that the rotating column 53 can drive the rotating drum 3 to rotate when moving in the direction away from the rotating drum 3, and can push the movable gear ring 52 to move in the direction away from the rotating drum 3. In addition, the end surface of the protrusion 531 contacting the movable ring gear 52 and the fixed ring gear 51 is an inclined surface 531a, the inclined surface 531a has an inclined direction consistent with the inclined direction of the first inclined section 511 of the fixed ring gear 51, that is, the inclined surface 531a has an inclined direction consistent with the inclined direction of the second inclined section 521 of the movable ring gear 52, so that the protrusion 531 moves smoothly, and the end of the inclined surface 531a has a smooth transition shape, so that the protrusion 531 moves from the valley bottom of the saw teeth of the movable ring gear 52 to the third inclined section 522, thereby pushing the movable ring gear 52 to move away from the drum 3.
The rotating column 53 always has a tendency to move away from the rotating drum 3 under the action of the elastic member 54, in this embodiment, the elastic member 54 is a compression spring and is disposed in the rotating drum 3, a boss 33 is disposed on the inner wall of the rotating drum 3 in a protruding manner, two ends of the spring respectively abut against the first end 1a of the rotating column 53 and the boss 33, and the elastic member 54 is made of non-magnetic material (such as plastic) to ensure that the elastic member 54 is not attracted by the electromagnet 4 to move.
As shown in fig. 9 to 12, the step driving mechanism of the present embodiment drives the rotating drum 3 to rotate in the following working process: as shown in fig. 9, when the electromagnet 4 is powered off, the projection 531 of the rotating column 53 is pressed against the valley of the saw tooth of the fixed ring gear 51 (i.e., the lower side of the first inclined section 511) by the elastic force of the elastic member 54;
when the electromagnet 4 is powered on, the connecting rod 55 connected with the movable gear ring 52 is magnetically adsorbed by the electromagnet 4 and moves towards the direction close to the rotary drum 3 (only linear movement does not rotate), and the movable gear ring 52 pushes the rotary column 53 to move synchronously (the lug 531 moves along the straight section 512); when the connecting rod 55 moves to the limit position and the electromagnet 4 is energized, the movable gear ring 52 does not move any more, and the high side of the second inclined section 521 is closer to the rotary drum 3 relative to the straight section 512, the projection 531 of the rotating column 53 moves along the second inclined section 521 of the movable gear ring 52 under the elastic force of the elastic member 54, and the rotating column 53 moves axially and slightly rotates at the same time because the movable gear ring 52 is fixed, as shown in fig. 10;
as shown in fig. 11, after the protrusion 531 moves along the second oblique section 521 of the movable gear ring 52 to the first oblique section 511 of the fixed gear ring 51, the electromagnet 4 is powered off, the movable gear ring 52 loses the attraction of the electromagnet 4, the protrusion 531 is pressed against the first oblique section 511 and slides along the first oblique section 511, and the rotating column 53 moves axially and rotates simultaneously until the rotating column 53 is pressed to the lower side of the first oblique section 511 (as shown in fig. 12); in addition, in the process that the bump 531 moves along the first oblique section 511, the bump 531 will drive the movable gear ring 52 to axially displace relative to the fixed gear ring 51 because of continuing to move along the second oblique section 521 or even the third oblique section 522 (when the bump 531 slides along the second oblique section 521, the movable gear ring 52 is not moved because the first oblique section 511 and the second oblique section 521 have the same inclination directions, and when the bump 531 slides along the third oblique section 522, the movable gear ring 52 is pushed to synchronously reset because the third oblique section 522 and the second oblique section 521 have opposite inclination directions).
From fig. 9 to fig. 12, it is an action cycle, that is, one on-off of the electromagnet 4, that is, one rotation of the rotating column 53 is realized (in this embodiment, 60 ° is designed, and six first oblique sections 511 are provided), and this operation can be performed in a cycle, and the rotating column 53 is controlled to rotate by different angles.
In the above embodiment, the actuator is located at both ends of the drum 3 separately from the driving assembly 5, but if different actuator means are used, they can be located at the same end of the drum 3, and even the actuator means can be not limited to the end of the drum 3, as long as the actuator means can act on the movable ring gear 52 to move the movable ring gear 52 toward or away from the drum 3, and the corresponding elastic member 54 acts on the rotation column 53 to make it move in the opposite direction to the movable ring gear 52, that is, the elastic member 54 makes the rotation column 53 always have a tendency to move away from or toward the drum 3.
Therefore, the gas distribution device of the embodiment has the advantages that the number of the combustion firepower adjusting sections is large, the adjusting gradient among the sections is small, the accuracy is high, the water temperature adjusting range is finer, the gas flow is controlled accurately, the number of nozzles participating in combustion can be adjusted by the water heater according to specific conditions, the phenomenon that the water temperature is too high or too low is avoided, and more choices are provided for users; the lowest temperature can be lifted by the gas distribution device, so that the problem that water is too hot in summer is effectively solved, and gas is saved; in addition, through setting up one set of actuating mechanism and can realize that the multistage number firepower is adjusted, save casing inner space, reduce the control cost of multistage number gas flow.
Claims (9)
1. A gas distribution device comprises
The gas-fired boiler comprises a shell (1), wherein the shell (1) is provided with a hollow inner cavity (1a), at least one first gas inlet (11) for gas to enter the shell (1) is formed in a first side wall (1b), and at least two nozzles (12) arranged at intervals are formed in a second side wall (1c) for gas to flow out;
the plugging mechanism is used for plugging the nozzle (12);
it is characterized in that the plugging mechanism comprises
A rotary drum (3) which is positioned in the inner cavity (1a) of the shell (1) and axially extends along the direction of the interval arrangement of the nozzle (12), the outer peripheral surface of the rotary drum (3) is always in contact with the second side wall (1c) of the shell (1) and is always kept at an interval with the first side wall (1b) of the shell (1); at least two strip-shaped through holes (32) which are arranged along the axial direction of the rotary drum (3) at intervals are formed in the side wall of the rotary drum (3), and each strip-shaped through hole (32) extends along the circumferential direction of the rotary drum (3) and corresponds to one nozzle (12);
the stepping driving mechanism acts on the rotary drum (3) and drives the rotary drum (3) to rotate step by step, so that the strip-shaped through holes (32) intermittently rotate to the corresponding nozzles (12);
step-by-step actuating mechanism including locating drive assembly (5) of rotary drum (3) one end, along the axial relatively rotary drum (3) from far away to near ground in proper order including:
a fixed gear ring (51) fixed relative to the shell (1), the first end surface of the fixed gear ring facing the rotary drum (3) is in a sawtooth shape, each sawtooth comprises an axial straight section (512) and a first inclined section (511) forming an included angle with the axial direction,
a movable gear ring (52) which is arranged in the fixed gear ring (51), has a wavy shape with undulation towards the first end surface of the rotary drum (3) and can axially move relative to the fixed gear ring (51),
the first end of the rotating column (53) is positioned in the rotating drum (3), the periphery of the rotating column is provided with convex teeth (532), the inner peripheral surface of the rotating drum (3) is provided with tooth grooves (31) capable of accommodating the corresponding convex teeth (532) to axially move at corresponding positions, the second end of the rotating column (53) extends out of the rotating drum (3), the periphery of the rotating column is provided with spaced convex blocks (531), the end surfaces of the convex blocks (531) are inclined surfaces (531a), and the inclined surfaces can respectively abut against the first end surface of the movable gear ring (52) and the first end surface of the fixed gear ring (51) to enable the rotating column (53) to drive the rotating drum (3) to rotate;
the step driving mechanism further comprises:
an actuating member acting on said mobile gear ring (52) to move said mobile gear ring (52) towards or away from said drum (3);
and the elastic piece (54) acts on the rotating column (53) to ensure that the rotating column (53) always has the tendency of moving towards the direction far away from or close to the rotating drum (3).
2. Gas distribution device according to claim 1, wherein said actuating member is an electromagnet (4) provided at a first end (3a) of said drum (3), and wherein said actuating member (5) is provided at a second end (3b) of said drum (3), said mobile ring gear (52) being capable of being attracted by said electromagnet (4) to move towards said drum (3), and wherein said elastic member (54) is a compression spring, provided inside said drum (3), to cause said rotating column (53) to always have a tendency to move away from said drum (3).
3. Gas distribution device according to claim 2, characterized in that said mobile ring gear (52) is of paramagnetic material or/and is centrally connected with a paramagnetic connecting rod (55) extending axially inside said drum (3) and projecting into the centre of the coil of said electromagnet (4).
4. Gas distribution device according to claim 1, wherein the first end face of the mobile ring gear (52) is serrated, each serration being constituted by a second oblique segment (521) and a third oblique segment (522) both inclined axially with respect to one another, wherein only the second oblique segment (521) is inclined in a direction coinciding with the first oblique segment (511) of the fixed ring gear (51), and the straight segment (512) of the fixed ring gear (51) forms an intersection with the second oblique segment (521) of the corresponding mobile ring gear (52) as seen radially.
5. The gas distribution device according to claim 4, characterized in that the inclined surface (531a) of the end surface of the projection (531) is inclined in the same direction as the first inclined section (511) of the fixed ring gear (51), the end of the inclined surface (531a) is in the shape of a smooth transition, and the projection (531) has a sufficient thickness in the radial direction to interfere with both the second inclined section (521) or the third inclined section (522) of the movable ring gear (52) and the first inclined section (511) of the fixed ring gear (51).
6. Gas distribution device according to any one of claims 1 to 5, characterized in that: the outer wall of the movable gear ring (52) is provided with a guide block (523) extending axially, and the inner wall of the fixed gear ring (51) is provided with a guide groove (513) capable of accommodating the guide block (523) to slide in, so that the movable gear ring (52) can axially move relative to the fixed gear ring (51).
7. The gas distribution device according to claim 1, characterized in that: the starting ends of all the strip-shaped through holes (32) are positioned on the same straight line parallel to the axis of the rotary drum (3), and the lengths of at least two of the strip-shaped through holes (32) are different.
8. The gas distribution device according to claim 7, characterized in that: the difference of the arc lengths between the strip-shaped through holes (32) with different lengths is positively correlated with the stepping rotation angle of the rotary drum (3).
9. A gas water heater using the gas distribution device of any one of claims 1 to 8, wherein: the gas water heater also comprises a burner (101) and a valve group (102) used for controlling the gas inlet amount, wherein the burner (101) is communicated with the nozzle (12), and the valve group (102) is communicated with the first gas inlet (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910565611.3A CN110375092B (en) | 2019-06-27 | 2019-06-27 | Gas distribution device and gas water heater using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910565611.3A CN110375092B (en) | 2019-06-27 | 2019-06-27 | Gas distribution device and gas water heater using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110375092A CN110375092A (en) | 2019-10-25 |
| CN110375092B true CN110375092B (en) | 2021-02-26 |
Family
ID=68250714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910565611.3A Active CN110375092B (en) | 2019-06-27 | 2019-06-27 | Gas distribution device and gas water heater using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110375092B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110887066B (en) * | 2019-12-03 | 2021-07-06 | 杭州厨神智能设备有限公司 | Energy-saving environment-friendly cooking bench |
| CN112855987B (en) * | 2021-01-07 | 2022-03-22 | 宁波方太厨具有限公司 | Zero cold water one-way valve for water heater |
| CN116889253B (en) * | 2023-07-28 | 2024-04-05 | 陕西秦巴茶业有限公司 | Tea fermentation device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE169392T1 (en) * | 1994-06-10 | 1998-08-15 | Danieli Off Mecc | ROTATING BURNER |
| DE102006009496A1 (en) * | 2006-02-27 | 2007-08-30 | Isphording Germany Gmbh | Valve arrangement for gas installation, has gas outlet lowered and/or closed by using valve unit that is arranged in shank, where linear motor of valve unit is designed as actuating drive, and valve unit is directly arranged on shank |
| ITTO20120455A1 (en) * | 2012-05-25 | 2013-11-26 | Eltek Spa | CONTROL DEVICE FOR GAS TAPS |
| CN204313275U (en) * | 2014-12-10 | 2015-05-06 | 练志伟 | Can the food baking spit tube of hydrofuge |
| CN108708985A (en) * | 2018-05-09 | 2018-10-26 | 冯森蕾 | A kind of sealing element of switching valve |
| CN109341089B (en) * | 2018-11-26 | 2023-09-08 | 珠海格力电器股份有限公司 | Gas distribution rod, gas water heater and gas control method |
-
2019
- 2019-06-27 CN CN201910565611.3A patent/CN110375092B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110375092A (en) | 2019-10-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110375092B (en) | Gas distribution device and gas water heater using same | |
| CN100422514C (en) | Pneumatically actuated valve for internal combustion engines | |
| CN110388675B (en) | Water distributing and collecting device | |
| CN104838207A (en) | Dual venturi for combustor | |
| CN106051200B (en) | A kind of fuel gas plug valve | |
| CN110388674B (en) | Water distributing and collecting device | |
| IES20020507A2 (en) | A valve and a gas burner | |
| CN104884867A (en) | Thermostat | |
| CN111750534B (en) | Gas distribution device and gas water heater using same | |
| CN111677876A (en) | Gas safety valve | |
| US7806140B2 (en) | Power saving locking coil | |
| JP3664661B2 (en) | Gas valve | |
| CN108006288B (en) | Steady flow control valve, water heater using same and temperature control method | |
| CN216279547U (en) | Gas valve | |
| CN213685341U (en) | Gas cooking utensils valve assembly and have its gas cooking utensils | |
| CN201908748U (en) | Exhaust gas recirculation valve | |
| US20210116048A1 (en) | Non-electric multi-channel valve for aqueous liquids or vapor | |
| CN111750535B (en) | Gas distribution device and gas water heater using same | |
| JP2002303418A (en) | Gas valve | |
| CN111140672B (en) | Gas circuit control valve structure of front pipe of water heater | |
| CN112762621B (en) | Gas distributor, electrodeless gas distribution method for water heater and distribution system | |
| CN215950445U (en) | Ball valve with double seals, stove regulating valve and stove thereof | |
| CN219920893U (en) | Gas passage structure of outdoor barbecue oven | |
| CN108006267B (en) | Valve body of gas stove | |
| RU2787614C1 (en) | Gas turbine engine system with external heat source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |