CN210718119U - Gas water heater - Google Patents
Gas water heater Download PDFInfo
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- CN210718119U CN210718119U CN201921138644.1U CN201921138644U CN210718119U CN 210718119 U CN210718119 U CN 210718119U CN 201921138644 U CN201921138644 U CN 201921138644U CN 210718119 U CN210718119 U CN 210718119U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 215
- 238000005192 partition Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 7
- 230000009977 dual effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000003287 bathing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a gas water heater, which comprises a water heater body, a heat exchanger, a water inlet pipe, a water outlet pipe, a first water pump, a one-way valve, a second water pump and a three-way valve; the heat exchanger sets up at the water heater originally internally, the inlet tube passes heat exchanger and goes out water piping connection, first water pump, check valve and second water pump set gradually on the inlet tube, an interface connection through third auxiliary pipe and three-way valve between check valve and the second water pump, two other interfaces of three-way valve are respectively through first auxiliary pipe and second auxiliary pipe and advance water piping connection, and the first water pump of output is parallelly connected with first auxiliary pipe, and the second water pump is parallelly connected with the second auxiliary pipe. The utility model discloses a combination of opening and closing of check valve and three-way valve can realize the water demand of three kinds of different flows.
Description
Technical Field
The utility model belongs to the technical field of the water heater, concretely relates to gas heater.
Background
More and more water heaters in the market at present realize the functions of pressurization and zero cold water by installing water pumps in the water heaters. The main principle is as follows: after the pressurization function of the water heater is started, the built-in water pump operates to increase the flow rate, the bathing experience is improved, the zero-cold-water preheating function is started in the standby state of the water heater, the built-in water pump drives the pipeline to store water, circularly flows and heats, and the instant heating and heating are realized by using water.
The common water pump is only provided with one centrifugal impeller, the supercharging capacity of the common water pump is limited, and a supercharging type or zero-cold-water heater on the market is generally only provided with one water pump, so that when the water supply pressure is low or the pipeline resistance is large, the sufficient supercharging effect cannot be achieved, the bathing large-flow requirement is influenced, and the zero-cold-water preheating time is too long.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one problem, the utility model provides a gas heater can satisfy different water consumption demands.
The technical proposal adopted by the utility model is that,
a gas water heater comprises a water heater body, a heat exchanger, a water inlet pipe, a water outlet pipe, a first water pump, a one-way valve, a second water pump and a three-way valve;
the heat exchanger sets up at the water heater originally internally, the inlet tube passes heat exchanger and goes out water piping connection, first water pump, check valve and second water pump set gradually on the inlet tube, an interface connection through third auxiliary pipe and three-way valve between check valve and the second water pump, two other interfaces of three-way valve are respectively through first auxiliary pipe and second auxiliary pipe and advance water piping connection, and the first water pump of output is parallelly connected with first auxiliary pipe, and the second water pump is parallelly connected with the second auxiliary pipe.
Preferably, the first water pump is a centrifugal booster pump.
Preferably, the second water pump is one of a centrifugal booster pump, a centrifugal vortex booster pump or a two-stage centrifugal booster pump.
Preferably, the centrifugal vortex booster pump comprises a first-stage impeller and a second-stage impeller, wherein the first-stage impeller is a centrifugal impeller, and the second-stage impeller is a vortex impeller.
Preferably, doublestage centrifugal booster pump includes motor element, casing subassembly and runner assembly, motor element's output and runner assembly are connected in order to drive its rotation, the casing subassembly cover is established in motor element and runner assembly's periphery.
Preferably, the rotating assembly comprises a straight pipe, a rotor and two centrifugal impellers, the rotor and the centrifugal impellers are respectively sleeved on two sides of the straight pipe, and the two centrifugal impellers are arranged in parallel and used for improving the supercharging effect.
Preferably, the dual-stage centrifugal booster pump further comprises a guide basin disposed between the two centrifugal impellers for increasing a flow rate.
Preferably, centrifugal impeller includes protecgulum, hou gai, impeller inlet opening, arc blade and impeller apopore, the relative formation cavity that sets up around protecgulum and the hou gai, the impeller inlet opening sets up on the protecgulum, arc blade sets up in the cavity between protecgulum and hou gai, the impeller apopore distributes on the periphery behind protecgulum and the cooperation of hou gai.
Preferably, casing subassembly includes water pump cavity, annular baffle, little die cavity, apopore, inlet opening and water pump shell, the water pump shell is the open, one end confined bowl form cavity casing of one end, and open end face is connected with the laminating of water pump inner bag and is formed the water pump cavity, the inside annular baffle that has the central through hole that is provided with of water pump shell, the annular baffle is cut apart into two at least little die cavities of intercommunication with the water pump cavity the outer fringe tangential direction of the first little die cavity of water pump shell open end face is provided with the apopore, sets up the inlet opening at water pump shell closed end face, centrifugal impeller sets up in small-size intracavity.
Preferably, the clearance between the front cover and the inner wall surface of the small cavity is smaller than the clearance between the rear cover and the inner wall surface of the small cavity.
Compared with the prior art, the utility model discloses when using, through the combination of opening and closing of check valve and three-way valve, can realize the water demand of three kinds of different flow.
Drawings
Fig. 1 is a schematic structural diagram of a gas water heater provided by an embodiment of the present invention;
fig. 2 is a sectional view of a two-stage centrifugal booster pump in a gas water heater according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of a centrifugal impeller of a gas water heater according to an embodiment of the present invention;
fig. 4 is a cross-sectional view of another structure of a gas water heater provided by the embodiment of the invention;
fig. 5 is an exploded view of a gas water heater according to an embodiment of the present invention;
fig. 6 is an exploded view of another structure of a gas water heater according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a flow guiding plate in a gas water heater according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a splitter plate in a gas water heater provided by an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the utility model provides a gas water heater, as shown in fig. 1, it includes water heater body 1, heat exchanger 2, inlet tube 3, outlet pipe 4, first water pump 5, check valve 6, second water pump 7 and three-way valve 8;
the heat exchanger 2 is arranged in the water heater body 1, the water inlet pipe 3 penetrates through the heat exchanger 2 to be connected with the water outlet pipe 4, the first water pump 5, the one-way valve 6 and the second water pump 7 are sequentially arranged on the water inlet pipe 3, the one-way valve 6 and the second water pump 7 are connected through a third auxiliary pipe 33 and one interface of a three-way valve 8, the other two interfaces of the three-way valve 8 are respectively connected with the water inlet pipe 3 through a first auxiliary pipe 31 and a second auxiliary pipe 32, the output first water pump 5 is connected with the first auxiliary pipe 31 in parallel, and the output second water pump 7 is connected with the second auxiliary pipe 32 in parallel;
thus, with the above-described structure, when water is normally used, the check valve 6 is closed, the three-way valve 8 opens the first auxiliary pipe 31 and the second auxiliary pipe 32, and water enters the heat exchanger 2 through the first auxiliary pipe 31 and the second auxiliary pipe 32; therefore, the use of the first water pump 5 and the second water pump 7 can be reduced, and the service life of the water pumps is prolonged;
when the water flow demand is large, the one-way valve 6 is closed, the three-way valve 8 opens the first auxiliary pipe 31 and the third auxiliary pipe 33, water enters the heat exchanger 2 through the first auxiliary pipe 31, the third auxiliary pipe 33 and the second water pump 7, and the water quantity is lifted through the second water pump 7;
when the water flow demand is maximum, the one-way valve 6 is opened, the three-way valve 8 is closed, water sequentially passes through the water inlet pipe 3, the first water pump 5, the one-way valve 6 and the second water pump 7 to enter the heat exchanger 2, and the water flow is lifted through the combined action of the first water pump 5 and the second water pump 7.
The first water pump 5 is a centrifugal booster pump, and the second water pump 7 is one of a centrifugal booster pump, a centrifugal vortex booster pump or a two-stage centrifugal booster pump; the centrifugal vortex booster pump comprises a first-stage impeller and a second-stage impeller, wherein the first-stage impeller is a centrifugal impeller and can reduce the necessary cavitation allowance of the pump, and the second-stage impeller is a vortex impeller, so that the pump lift of the pump is improved;
therefore, when the second water pump 7 is a centrifugal vortex booster pump, the centrifugal booster pump is matched with the centrifugal vortex booster pump, so that higher water pump lift is realized;
when the second water pump 7 is a two-stage centrifugal booster pump, the centrifugal booster pump and the two-stage centrifugal booster pump are matched, so that the maximum water supply amount is realized.
As shown in fig. 2, the dual stage centrifugal booster pump includes a motor assembly 71, a housing assembly 72, and a rotation assembly 73, wherein:
the output end of the motor assembly 71 is connected with the rotating assembly 73 to drive the motor assembly to rotate, and the shell assembly 72 is sleeved on the peripheries of the motor assembly 71 and the rotating assembly 73;
the rotating assembly 73 comprises a straight pipe 731, a rotor 732 and two centrifugal impellers 733, the rotor 732 and the centrifugal impellers 733 are respectively sleeved on two sides of the straight pipe 731, and the two centrifugal impellers 733 are arranged in parallel to improve the supercharging effect;
the dual-stage centrifugal booster pump further includes a guide basin 76, and the guide basin 76 is disposed between the two centrifugal impellers 733 for increasing a flow rate.
The housing assembly 72 and the motor assembly 71 are fixedly connected by a plurality of long bolts 75.
Like this, adopt above-mentioned structure, motor element 71's output shaft drives runner assembly 73 work, and runner assembly 73 is at the in-process of work, and two-stage centrifugal impeller 733 carries out pressure boost step by step, has promoted the pressure boost effect.
As shown in fig. 2-3, the centrifugal impeller 733 includes a front cover 7331, a rear cover 7332, an impeller water inlet 7333, an arc-shaped blade 7334, and an impeller water outlet 7335, wherein:
the front cover 7331 and the rear cover 7332 are oppositely arranged in front and at the back to form a hollow cavity, the impeller water inlet 7333 is arranged on the front cover 7331, the arc-shaped blade 7334 is arranged in the hollow cavity between the front cover 7331 and the rear cover 7332, and the impeller water outlet 7335 is distributed on the circumference surface of the front cover 7331 and the rear cover 7332 after matching;
thus, when the centrifugal impeller 733 rotates, water flowing into the cavity of the centrifugal impeller 733 from the impeller water inlet 7333 is ejected outward from the impeller water outlet 7335 by the arc-shaped blades 7334.
The motor assembly 71 comprises a base 711, a stator 712, a water pump liner 713 and a rotating shaft 714, the water pump liner 713 is nested in the base 711, the rotating shaft 714 is installed on the axis of the water pump liner 713, and the stator 712 is arranged on the outer wall of the water pump liner 713.
The base 711 is a bowl-shaped hollow body with an open end, the water pump liner 713 is a cylindrical hollow shell with a closed end, an outer flange 7131 is arranged at the open end, the water pump liner 713 is integrally embedded in the base 711, and the outer flange 7131 is attached to the open end face of the base 711;
thus, the rotating shaft 714 of the motor assembly 71 passes through the straight tube 731 of the rotating mechanism 73, and the rotating mechanism 73 rotates around the rotating shaft 714; the rotor 732 of the motor is positioned inside the water pump inner 713, and the centrifugal impeller 733 is positioned outside the outer flange 7131 of the water pump inner 713.
The shell assembly 72 comprises a water pump cavity 721, an annular partition plate 722, a small cavity 723, a water outlet hole 724, a water inlet hole 725 and a water pump shell 726, wherein the water pump shell 726 is a bowl-shaped hollow shell with an open end and a closed end, the open end surface is attached to the water pump inner container 713 to form the water pump cavity 721, the annular partition plate 722 with a central through hole 7221 is arranged inside the water pump shell 726, the annular partition plate 722 divides the water pump cavity 721 into at least two communicated small cavities 723, the water outlet hole 724 is arranged in the tangential direction of the outer edge of the first small cavity 723 on the open end surface of the water pump shell 726, and the water inlet hole 725 is arranged on the closed end surface of the;
the number of the centrifugal impellers 733 is the same as that of the small-sized chamber 723, and the centrifugal impellers 733 are provided in the small-sized chamber 723.
The gap between the front cover 7331 and the inner wall surface of the small cavity 723 is smaller than the gap between the rear cover 7332 and the inner wall surface of the small cavity 723.
Moreover, the centrifugal impeller 733 in the small cavity 723 is closer to the water inlet end of each small cavity 723, that is, the gap between the front cover 7331 and the inner wall surface of the small cavity 723 is smaller than the gap between the impeller rear cover 7332 and the inner wall surface of the small cavity 723, a wider flow channel is formed between the annular partition 722 and the impeller rear cover 7332 of the centrifugal impeller 733, when the centrifugal impeller 733 rotates, more water thrown out of the centrifugal impeller 733 flows to the next small cavity 723 from the wider flow channel on the side of the impeller rear cover 7332, and the water backflow phenomenon is reduced.
In order to increase the water discharge speed and increase the pressurization effect, the impeller water outlet 7335 of the first centrifugal impeller 733 near the water pump liner 713 is located on the same plane as the water outlet 724 of the housing assembly 72.
A bearing hole 727 is arranged at the water inlet hole 725 of the shell assembly 72, the rotating shaft 714 of the motor assembly 71 extends to the bearing hole 727, and the bearing hole 727 supports the rotating shaft 714 and defines the moving position of the rotating mechanism 73 for preventing the centrifugal impeller 733 from shaking.
The water pump 2 further includes an annular gasket 74, the annular gasket 74 being disposed on the interface between the water pump housing 726 and the water pump liner 713.
The water pump housing 726 includes a front housing 7261 and a rear housing 7262, the front and rear housings 7261 and 7262 are disposed in a front-to-rear opposing relationship, and the annular seal ring 74 is further disposed at the junction of the front and rear housings 7261 and 7262;
the water pump housing 726 is assembled in a split manner, which facilitates assembly of the adjacent centrifugal impellers 733.
As shown in fig. 6, in particular, the guide basin 76 is disposed between the annular partition 722 and the rear cover 7332;
as shown in fig. 7 and 8, a plurality of peripheral through holes 761 are formed around the deflector disc 76, a central hole 762 for fixing the straight pipe 731 is formed in the center of the deflector disc 76, and a gap between the deflector disc 76 and the rear cover 7332 is smaller than a gap between the deflector disc 76 and the annular partition 722; a flow dividing plate 763 is arranged between the flow deflector 76 and the annular partition 722, and the channel direction of the flow dividing plate 763 is consistent with the water flow direction;
thus, when the centrifugal impeller 733 rotates, the thrown water flows through the through hole 761 on the periphery of the deflector 76 and then flows to the impeller water inlet 7333 of the next centrifugal impeller 733 along the surface of the deflector 76, and because the deflector 76 does not rotate along with the centrifugal impeller 733, the water flow traction force of the wall surface of the centrifugal impeller 733 is eliminated, which is more beneficial to the rapid flow of water, and the step-by-step supercharging effect is improved; and the channel direction of the flow dividing sheet 763 is consistent with the water flow direction, which helps to further reduce the water turbulence and increase the water flow speed.
The working process is as follows:
the user controls the opening and closing of the one-way valve 6 and the three-way valve 8 according to the water flow requirement; when water is normally used, the one-way valve 6 is closed, the three-way valve 8 opens the first auxiliary pipe 31 and the second auxiliary pipe 32, and the water enters the heat exchanger 2 through the first auxiliary pipe 31 and the second auxiliary pipe 32; therefore, the use of the first water pump 5 and the second water pump 7 can be reduced, and the service life of the water pumps is prolonged; when the water flow demand is large, the one-way valve 6 is closed, the three-way valve 8 opens the first auxiliary pipe 31 and the third auxiliary pipe 33, water enters the heat exchanger 2 through the first auxiliary pipe 31, the third auxiliary pipe 33 and the second water pump 7, and the water quantity is lifted through the second water pump 7; when the water flow demand is maximum, the one-way valve 6 is opened, the three-way valve 8 is closed, water sequentially passes through the water inlet pipe 3, the first water pump 5, the one-way valve 6 and the second water pump 7 to enter the heat exchanger 2, and the water flow is lifted through the combined action of the first water pump 5 and the second water pump 7.
The working process of the two-stage centrifugal booster pump is shown by an arrow in fig. 2-4, the output shaft of the motor assembly 71 drives the centrifugal impeller 733 of the rotating assembly 73 to rotate, in the process of rotating the centrifugal impeller 733, water thrown away from the centrifugal impeller 733 flows to the next small cavity 723 from a wider flow channel on the side of the impeller rear cover 7332, flows through the peripheral through hole 761 of the deflector 76, flows to the impeller water inlet 7333 of the next centrifugal impeller 733 along the surface of the deflector 76, is subjected to stage-by-stage boosting through the two-stage centrifugal impeller 733, and finally flows out from the water outlet 724.
In the embodiment, the water requirements of three different flows can be realized through the combination of opening and closing the one-way valve and the three-way valve.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A gas water heater is characterized by comprising a water heater body (1), a heat exchanger (2), a water inlet pipe (3), a water outlet pipe (4), a first water pump (5), a one-way valve (6), a second water pump (7) and a three-way valve (8);
heat exchanger (2) set up in water heater body (1), inlet tube (3) pass heat exchanger (2) and are connected with outlet pipe (4), first water pump (5), check valve (6) and second water pump (7) set gradually on inlet tube (3), an interface connection through third auxiliary pipe (33) and three-way valve (8) between check valve (6) and second water pump (7), two other interfaces of three-way valve (8) are connected with inlet tube (3) through first auxiliary pipe (31) and second auxiliary pipe (32) respectively, and first water pump (5) and first auxiliary pipe (31) are parallelly connected to export, and second water pump (7) are parallelly connected with second auxiliary pipe (32).
2. A gas water heater according to claim 1, characterized in that said first water pump (5) is a centrifugal booster pump.
3. A gas water heater according to claim 2, wherein the second water pump (7) is one of a centrifugal booster pump, a centrifugal vortex booster pump or a two-stage centrifugal booster pump.
4. A gas water heater as claimed in claim 3, wherein the centrifugal vortex booster pump comprises a first stage impeller and a second stage impeller, the first stage impeller being a centrifugal impeller and the second stage impeller being a vortex impeller.
5. The gas water heater as claimed in claim 3, wherein the two-stage centrifugal booster pump comprises a motor assembly (71), a housing assembly (72) and a rotating assembly (73), the output end of the motor assembly (71) is connected with the rotating assembly (73) to drive the motor assembly (71) to rotate, and the housing assembly (72) is sleeved on the peripheries of the motor assembly (71) and the rotating assembly (73).
6. The gas water heater as claimed in claim 5, wherein the rotating assembly (73) comprises a straight pipe (731), a rotor (732) and two centrifugal impellers (733), the rotor (732) and the centrifugal impellers (733) are respectively sleeved on two sides of the straight pipe (731), and the two centrifugal impellers (733) are arranged in parallel to improve the supercharging effect.
7. A gas water heater according to claim 6, wherein said dual stage centrifugal booster pump further comprises a flow guiding basin (76), said flow guiding basin (76) being arranged between two centrifugal impellers (733) for increasing flow rate.
8. The gas water heater of claim 7, wherein the centrifugal impeller (733) comprises a front cover (7331), a rear cover (7332), an impeller inlet hole (7333), an arc-shaped blade (7334) and an impeller outlet hole (7335), the front cover (7331) and the rear cover (7332) are oppositely arranged in front and at the back to form a hollow cavity, the impeller inlet hole (7333) is arranged on the front cover (7331), the arc-shaped blade (7334) is arranged in the hollow cavity between the front cover (7331) and the rear cover (7332), and the impeller outlet holes (7335) are distributed on the circumference of the front cover (7331) and the rear cover (7332) after being matched.
9. The gas water heater according to claim 8, wherein the housing assembly (72) comprises a water pump cavity (721), an annular partition plate (722), a small cavity (723), a water outlet hole (724), a water inlet hole (725) and a water pump housing (726), the water pump housing (726) is a bowl-shaped hollow housing with an open end and a closed end, the open end surface is connected with the water pump liner (713) in an attaching manner to form the water pump cavity (721), the annular partition plate (722) with a central through hole (7221) is arranged inside the water pump housing (726), the annular partition plate (722) divides the water pump cavity (721) into at least two communicated small cavities (723), the water outlet hole (724) is arranged in a tangential direction of an outer edge of the first small cavity (723) on the open end surface of the water pump housing (726), the water inlet hole (725) is arranged on the closed end surface of the water pump housing (726), the centrifugal impeller (733) is arranged in the small cavity (723).
10. A gas water heater according to claim 9, wherein the gap between the front cover (7331) and the inner wall surface of the small chamber (723) is smaller than the gap between the rear cover (7332) and the inner wall surface of the small chamber (723).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921138644.1U CN210718119U (en) | 2019-07-19 | 2019-07-19 | Gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921138644.1U CN210718119U (en) | 2019-07-19 | 2019-07-19 | Gas water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210718119U true CN210718119U (en) | 2020-06-09 |
Family
ID=70962366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921138644.1U Active CN210718119U (en) | 2019-07-19 | 2019-07-19 | Gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210718119U (en) |
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2019
- 2019-07-19 CN CN201921138644.1U patent/CN210718119U/en active Active
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