CN211625680U - Gas water heating equipment - Google Patents

Abstract

The utility model provides a gas hot water equipment, it includes shell, combustor, absorbs the heat that the combustor produced and give the heat transfer for the heat exchanger of rivers through it and collect the produced flue gas of burning and with its exhaust subassembly of discharging fume. The top plate of the shell is provided with a pipe orifice and a pipe wall formed around the pipe orifice. The subassembly of discharging fume has the pipe portion of discharging fume, and this pipe portion of discharging fume is close to the mouth of pipe setting, and the central axis of the pipe portion of discharging fume and the central axis coincidence of orificial or parallel. The device also comprises a positioning piece which is accommodated in the pipe orifice, the peripheral side wall of the positioning piece is abutted against the inner side of the pipe wall, and the inner peripheral side wall of the positioning piece is abutted against the outer wall of the smoke exhaust pipe part. Set up the setting element through the pipe portion of discharging fume at the subassembly of discharging fume and the pipe wall of shell between, make the pipe portion of discharging fume reliably fix a position for the mouth of pipe, avoid taking place the condition of skew for the mouth of pipe when storage or transportation.

Description

Gas water heating equipment

Technical Field

The utility model relates to a hot water preparation field especially relates to a gas hot water equipment.

Background

Gas-fired water heating apparatuses generally include a gas water heater and a gas boiler. Taking a gas water heater as an example, a burner, a heat exchanger, and a piping system are generally disposed therein. Burners often include several fire segments arranged side by side, each having a gas-air mixing channel. The gas passes through the gas proportional valve and is sprayed into the fire row sheets through the gas distribution frame, the gas and the air are mixed in the mixing channel of the fire row sheets and are transferred to the fire holes positioned at the tops of the fire row sheets to be combusted in the combustion chamber and generate heat, the generated heat can heat water in the heat exchanger, and then the heated water can be output through a pipeline system to meet the supply requirement of domestic hot water for drinking, bathing and the like. The gas boiler can be used for providing domestic hot water and can also be communicated with a radiator arranged indoors to provide a central heating function.

And a smoke exhaust device is also arranged in the gas water heating equipment and used for collecting smoke generated by combustion and exhausting the smoke to the outside. Generally, an opening is provided at the top of the casing of the device, the smoke outlet of the smoke exhaust device is arranged close to the opening, and the central axis of the smoke outlet coincides with or is parallel to the central axis of the opening at the top of the casing, so that the smoke exhaust pipe can be connected with the smoke outlet of the smoke exhaust device through the opening at the top of the casing when the device is installed in a user's home. However, the equipment is usually stored on its side, and after a long time, the smoke outlet of the smoke evacuation device is deviated from the original axis due to the influence of the center of gravity, and this is aggravated by the shock or fall during transportation. Therefore, when the smoke exhaust pipe is installed in a user home, the smoke exhaust pipe cannot be smoothly butted with the eccentric smoke exhaust port.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gas hot-water apparatus, it can reliably fix a position the exhaust port of subassembly of discharging fume when storing and transporting.

An object of the utility model is to provide a gas hot-water apparatus, it includes shell, combustor, absorbs the heat that the combustor produced and gives the heat transfer for the heat exchanger of rivers through it and collect the produced flue gas of burning and with its exhaust subassembly of discharging fume. The top plate of the shell is provided with a pipe orifice and a pipe wall formed around the pipe orifice. The subassembly of discharging fume has the pipe portion of discharging fume, and this pipe portion of discharging fume is close to the mouth of pipe setting, and the central axis of the pipe portion of discharging fume and the central axis coincidence of orificial or parallel. The device also comprises a positioning piece which is accommodated in the pipe orifice, the peripheral side wall of the positioning piece is abutted against the inner side of the pipe wall, and the inner peripheral side wall of the positioning piece is abutted against the outer wall of the smoke exhaust pipe part.

As a further improvement of the utility model, a notch is arranged on the periphery of the top of the positioning piece.

As a further improvement of the utility model, the top center area of the positioning piece is provided with a through hole.

As a further improvement of the utility model, the number of the notches is two, and the notches are distributed along the radial direction symmetrically.

As a further improvement of the utility model, the smoke exhaust component comprises a smoke collecting hood positioned above the burner and the heat exchanger and a fan arranged on the smoke collecting hood; a smoke exhaust pipe portion; formed at the outlet of the fan.

Compared with the prior art, the beneficial effects of the utility model are that: set up the setting element through the pipe portion of discharging fume at the subassembly of discharging fume and the pipe wall of shell between, make the pipe portion of discharging fume reliably fix a position for the mouth of pipe, avoid taking place the condition of skew for the mouth of pipe when storage or transportation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings related to the present invention in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic perspective view of a gas-fired water heating apparatus according to one embodiment of the present invention;

FIG. 2 is a schematic plan view of the gas fired water heating apparatus shown in FIG. 1 with portions of the housing panels removed and in front elevation;

FIG. 3 is a schematic perspective view of the gas-fired water heating apparatus shown in FIG. 2 with the burner removed;

FIG. 4 is a perspective view of the gas valve and gas distribution assembly of the gas water heater apparatus shown in FIG. 2 with the gas valve and gas distribution assembly removed;

FIG. 5 is a schematic perspective view from the top of the gas fired water heating apparatus shown in FIG. 1;

fig. 6 is a perspective view illustrating the gas-fired water heating apparatus shown in fig. 5 with the positioning member removed.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. However, these embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art based on these embodiments are all included in the scope of the present invention.

The gas water heater can be a gas water heater which uses combustible gas as fuel, such as natural gas, city gas, liquefied gas, methane and the like, heats water by burning the combustible gas to meet the requirement of domestic water of users, and can also be a gas boiler for central heating. The present invention will be described in detail below with reference to a gas water heater as an example.

Referring to fig. 1 to 5, a gas water heater according to an embodiment of the present invention is shown. The gas water heater 100 includes a housing 10, a burner 40 housed in the housing 10, a heat exchanger 47, a smoke exhaust unit, a gas valve 21 for controlling gas supply to the burner, a gas distribution device, and the like.

Referring to fig. 1 to 3, in the present embodiment, the housing 10 is substantially rectangular, and may be formed by splicing a plurality of panels, such as a front panel, a back panel 14, and side panels, which extend vertically, and a top panel 11 and a bottom panel 12, which are fixedly connected to the back panel and are perpendicular to the back panel. Furthermore, a partition 13 is provided in the housing between the top plate 11 and the bottom plate 12. As shown in fig. 3, the partition plate 13 includes a fixed plate 131 fixedly connected to the back plate 14 by caulking or the like, and a detachable plate 132 detachably attached to the fixed plate 131. The fixed plate 131 is opened at a side away from the back plate 14, and the detachable plate 132 is attached to the fixed plate 131 through the opening and is movable in a direction away from the back plate 14 with respect to the fixed plate 131 when detached. Specifically, the opening edge portion 1311 of the fixed plate is punched out to form a recessed region recessed toward the top plate 11, and the detachable plate 132 is fitted in the recessed region. The detachable plate 132 is installed at the bottom of the fixed plate 131 to overlap with the opening edge portion 1311 of the fixed plate 131, so that the detachable plate 132 can also move toward the base plate 12 with respect to the fixed plate 131 when detached. The fixed plate 131 and the detachable plate 132 can be connected by a fastening means such as screws, for example, through the through holes 1322 on the front end edge 1321 of the detachable plate and the through holes 1312 on the front end edge of the fixed plate, respectively, so as to fixedly connect the two together.

The burner 40 comprises a burner unit, in this embodiment a plurality of fire grate segments 41 arranged side by side. Each fire row plate is provided with a gas-air mixing passage in which gas and air supplied from the gas distribution device 30 are mixed and transferred to fire holes at the top of the fire row plate to be burned and generate heat. In the present embodiment, in order to reduce the emission of nitrogen oxides, the burner is water-cooled, that is, a cooling water pipe 42 passes through the head of each fire row fin 41 to reduce the flame temperature, thereby reducing the emission of nitrogen oxides. The cooling water pipe 42 has a water inlet pipe section 421 and a water outlet pipe section 422, wherein the water inlet pipe section 421 is detachably connected to the first pipe section 82 connected to the water inlet pipe 81, and the water outlet pipe section 422 is detachably connected to the second pipe section 83 connected to the water pipe passing through the heat exchanger 47. The pipelines can be connected in a threaded mode through nuts and pipe orifices.

The burner 40 may be fixedly mounted on the detachable plate 132 directly or indirectly via the gas distribution device 30. In this embodiment, the gas distribution device 30 is disposed between the partition 13 and the burner 40, and is fixedly mounted on the detachable plate 132. The gas distribution device 30 includes a gas distribution frame 31, the gas distribution frame 31 is disposed to extend lengthwise and has a plurality of gas outlets facing the burner 40 and corresponding to the plurality of fire fins 41, so as to distribute the gas to the corresponding fire fins respectively. The burner 40 is provided at both longitudinal ends thereof with a pair of holding plates 43, and the holding plates 43 are fixedly connected to the gas distribution frame by screws 311, so that the burner 40 is fixedly connected to the detachable plate 132 through the gas distribution device 30. In the present embodiment, in order to ensure that the burner 40 is reliably fixed in the housing 10, the burner 40 is detachably mounted on the back plate 14 by screwing the fixing piece 45 provided thereon to the fixing frame 141 provided on the back plate.

The heat exchanger 47 is installed above the burner 40. A combustion casing 46 is provided between the burner 40 and the heat exchanger 47, and an expansion part 461 is formed at the bottom thereof to cover the top of the burner 40, thereby defining a combustion chamber in the combustion casing 46. The heat exchanger 47 may be a finned tube heat exchanger, i.e., a heat exchanger comprising a plurality of fins through which a heat absorbing water tube is circuitously passed. The gas-air mixture is combusted in the combustion chamber, the generated heat is absorbed by the fins and further transferred to water flowing from the water inlet pipe 81 and sequentially flowing through the first pipe section 82, the cooling water pipe 42 and the second pipe section 83 to enter the heat absorption water pipe, and the heated water is discharged through the water discharge pipe 84, thereby providing water required for life for the user.

The gas distribution device 30 also has an end 32 projecting beyond the bottom of the removable plate 132, and a gas pipe 22 is removably connected, for example by means of a nut 23, between said end 32 and the gas valve 21. The air valve 21 is located between the partition plate 13 and the base plate 12 and is mounted on the base plate 12. The gas valve 21 may be a gas proportional valve, which is communicated with an external gas pipeline and is connected with a control circuit board (not shown) to controllably control the amount of gas supplied to the gas distribution device 30 by adjusting the valve opening degree thereof.

The bottom of the air valve 21 extends out of a gas pipe section 211. The bottom plate 12 is formed with an elongated slot 1211 opened at a side away from the back plate 14 and extending toward the back plate, and the gas pipe section 211 extends through the elongated slot 1211 and is protruded outside the bottom plate 12 to be connected to an external gas pipe. In the present embodiment, a depressed area 121 is formed at the valve installation position of the bottom plate 12, and the long groove 1211 is formed in the depressed area 121. In this way, a relatively abundant space can be provided for arrangement and installation of the vertical upper air valve and the gas pipe thereof.

The gas-fired water heating apparatus 100 is typically hung from a wall in the user's home and does not require the apparatus to be removed from the wall when maintenance or repair of the burner is required. Referring to fig. 3, first, the front panel and the side panels of the housing are detached; then, the connection of the first pipe section 82 and the second pipe section 83 with the cooling water pipe 42 and the connection between the fixing bracket 141 on the back plate 14 and the fixing plate 45 of the burner 40 are released; then, the connection between the end 32 of the gas distribution device 30 and the gas pipe 22 is released; finally, the detachable plate 132 is disconnected from the fixed plate 131, and then the detachable plate 132, the gas distribution device 30, and the burner 40 are moved together toward the base plate 12 a distance to be separated from the combustion casing 46 and further moved away from the back plate 14, thereby detaching the burner 40 from the apparatus. After the burner 40 is removed, other components such as a heat exchanger above the partition 13 may be further removed, if necessary.

If the parts below the partition 13, such as the gas valve 21, need to be removed, the device need not be removed from the wall as well. Referring to fig. 4, first, the front panel and the side panels of the housing are detached; then, the screw 311 between the burner 40 and the gas distribution device 30 is removed to disengage them; then, the connection between the air valve 21 and the bottom plate 12 is released; finally, the connection between the detachable plate 132 and the fixed plate 131 is released, and then the detachable plate 132, the gas distribution device 30, the gas pipe 22, and the gas valve 21 are moved together in a direction away from the back plate 14, thereby detaching the gas valve 21 from the apparatus.

Because the partition plate is provided with the detachable part and the burner is fixedly arranged on the detachable part, when the burner needs to be cleaned and maintained, the burner and the detachable part of the partition plate can be detached together. Since this construction does not require the apparatus to be removed from the wall and only a small number of parts are involved in the disassembly process, it is convenient for maintenance personnel to disassemble the burner and clean it for maintenance at the user's home.

The smoke exhaust assembly for collecting smoke (exhaust gas containing carbon monoxide, nitrogen oxides, etc.) generated by combustion and discharging the smoke to the outside includes a smoke collecting hood 50 and a fan 60. The hood 50 is located above the burner 40 and the heat exchanger 47, and has a longitudinal portion and a vertical portion connected to the longitudinal portion and extending vertically. In this embodiment, the fan sets up in the contained angle space of the longitudinal part of collection petticoat pipe and vertical part, and it can adopt centrifugal fan, and gas gets into from the axial of fan promptly, then changes into radially when the impeller of high-speed rotation, slows down afterwards, makes kinetic energy transform into pressure energy to the flow of driving about the flue gas. A smoke exhaust duct portion 61 is formed at the outlet of the blower. In other embodiments, the fan may be disposed below the burner, with the top of the fume collection hood forming the flue pipe portion.

Referring to fig. 5 and 6 together, the top plate 11 of the housing is provided with a nozzle and a pipe wall 111 formed around the nozzle. The above-mentioned flue pipe portion 61 is disposed close to the nozzle, and preferably, the central axis of the flue pipe portion 61 coincides with the central axis of the nozzle. Of course, in other embodiments, the central axis of the flue pipe portion 61 and the central axis of the nozzle may be parallel to each other with a small displacement therebetween. The apparatus further comprises a positioning member 70, which is cylindrical in shape since the nozzle is circular in this embodiment, and has a diameter equal to or slightly smaller than the diameter of the nozzle. The inner peripheral wall 73 of the positioning member 70 defines a receiving cavity for receiving the smoke evacuation pipe portion 61. The diameter of the containing cavity is equal to or slightly larger than that of the smoke exhaust pipe part. When the retainer 70 is fitted into the opening, its outer peripheral side wall abuts against the inside of the pipe wall 111 entirely or partially, and its inner peripheral side wall 73 abuts against the outer wall of the smoke exhaust pipe portion 61 entirely or partially. Thereby make the smoke exhaust pipe portion reliably fix a position for the mouth of pipe, avoid taking place the condition of skew for the mouth of pipe when storage or transportation.

The positioning member 70 has a through hole 71 at a top center region thereof and a notch 72 at a top peripheral side thereof. The two notches 72 may be symmetrically radially spaced so that the retainer can be easily removed from the top plate 11 of the housing by grasping the two notches. In other embodiments, there may be only one notch, in which case the retainer may be removed from the spout of the housing top plate 11 by pinching the notch and the inside of the through hole 71.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (5)

1. A gas-fired water heating apparatus comprising a housing (10), a burner (40), a heat exchanger (47) which absorbs heat generated by the burner and transfers the heat to a flow of water passing therethrough, and a smoke evacuation assembly which collects and evacuates smoke generated by combustion; the top plate (11) of the shell is provided with a pipe orifice and a pipe wall (111) formed around the pipe orifice, the smoke exhaust component is provided with a smoke exhaust pipe part (61), the smoke exhaust pipe part is arranged close to the pipe orifice, and the central axis of the smoke exhaust pipe part is coincident with or parallel to the central axis of the pipe orifice; the method is characterized in that: the device also comprises a positioning piece (70) which is accommodated in the pipe orifice, the outer peripheral side wall of the positioning piece is abutted against the inner side of the pipe wall, and the inner peripheral side wall of the positioning piece is abutted against the outer wall of the smoke exhaust pipe part.

2. The gas-fired water heating apparatus according to claim 1, wherein: and notches (72) are arranged on the periphery of the top of the positioning piece.

3. The gas-fired water heating apparatus according to claim 1, wherein: the top center area of the positioning piece is provided with a through hole (71).

4. The gas-fired water heating apparatus according to claim 2, wherein: the two notches are symmetrically distributed along the radial direction.

5. The gas-fired water heating apparatus according to claim 1, wherein: the smoke exhaust assembly includes a smoke collecting hood (50) located above the burner and the heat exchanger, and a fan (60) installed on the smoke collecting hood, and the smoke exhaust duct part (61) is formed at an outlet of the fan.

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