CN210051380U - Water flow sensor and gas water heater - Google Patents
Water flow sensor and gas water heater Download PDFInfo
- Publication number
- CN210051380U CN210051380U CN201921257273.9U CN201921257273U CN210051380U CN 210051380 U CN210051380 U CN 210051380U CN 201921257273 U CN201921257273 U CN 201921257273U CN 210051380 U CN210051380 U CN 210051380U
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- shell
- piston
- water
- flow sensor
- water flow
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Abstract
The utility model discloses a water flow sensor and a gas water heater, wherein the water flow sensor comprises a shell, and a Hall flowmeter assembly is arranged on the shell; the shell is provided with a pressure relief channel, the pressure relief channel is provided with a left section and a right section, a piston is arranged in the pressure relief channel and is arranged between the left section and the right section, the left section is communicated with an inner cavity of the shell, and an elastic component is arranged in the right section; the right side of the right section is provided with an end cover, the end cover is detachably connected with the shell, and the end cover is provided with a ventilation opening. When water in the water channel of the gas water heater freezes and expands outwards, the ice blocks can be extruded towards the piston due to the fact that the freezing process is a slow process, the extruded piston moves rightwards, air in the right section is discharged into external air through the ventilation port, enough space is released for the expanded ice blocks, and therefore the shell is prevented from being frozen or the Hall flow meter assembly is prevented from being damaged, and the protection effect can be achieved under the condition that the water heater is powered off.
Description
Technical Field
The utility model relates to a gas heater technical field, in particular to water flow sensor and gas heater.
Background
In winter, due to the extremely rapid reduction of the temperature, when water in a water channel of the gas water heater is frozen, ice blocks can expand outwards to damage parts of the water channel, and the parts of the water channel can be frozen and cracked seriously; most of the gas water heaters on the market at present do not have a frost crack prevention structure, usually, the gas water heaters play a role in protection through artificial drainage, and the gas water heaters with frost crack prevention usually adopt that an anti-freezing heating body is added on a water pipeline or the internal water flow is circulated under the action of a water pump through program control. These solutions still have many leaks and deficiencies in actual operation, such as freezing and cracking of the water heater tank or the parts of the waterway due to user power failure, forgetting to drain, etc., and the water flow sensor is particularly vulnerable to damage due to freezing of water in the waterway because of the presence of the plurality of delicate parts in the water flow sensor.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: provided is a water flow sensor which is not easily damaged by freezing of water in a water channel.
The utility model provides a solution of its technical problem is:
a water flow sensor comprises a shell, wherein the shell is provided with a water inlet and a water outlet, a Hall flow meter assembly is arranged on the shell, and the Hall flow meter assembly is arranged between the water inlet and the water outlet; the shell is provided with a pressure relief channel, the pressure relief channel is provided with a left section and a right section, a piston is arranged in the pressure relief channel and is arranged between the left section and the right section, the left section is communicated with an inner cavity of the shell, and an elastic component is arranged in the right section; the right side of the right section is provided with an end cover, the end cover is detachably connected with the shell, the elastic component is arranged between the end cover and the piston, two ends of the elastic component are respectively connected with the piston and the end cover, and the end cover is provided with a ventilation opening.
As a further improvement of the above technical solution, the inner diameter of the left section is smaller than the inner diameter of the right section, and the piston is abutted to the left section from right to left; a rubber pad is arranged between the piston and the left section and fixedly connected with the piston, and the rubber pad covers the left section.
As a further improvement of the technical scheme, a sealing ring is sleeved on the outer side of the piston and arranged between the piston and the inner wall of the right section.
As a further improvement of the technical scheme, the end cover is provided with a through hole, a bolt is arranged in the through hole, the shell is provided with an internal threaded hole, the bolt is in threaded connection with the shell, and the end cover is connected with the shell through the bolt.
As a further improvement of the above technical solution, the elastic member is a spring.
As a further improvement of the technical scheme, a temperature sensor is arranged in the left section, a main body of the temperature sensor is fixedly connected with the piston, a terminal line of the temperature sensor penetrates through the piston, the right section and the ventilation port, and the main body or the terminal line of the temperature sensor is hermetically connected with the piston, so that the left section is not communicated with the right section.
As a further improvement of the above technical solution, the main body or the terminal wire of the temperature sensor is connected to the piston by an adhesive.
As a further improvement of the technical scheme, the shell and the side wall of the pressure relief channel are integrally formed by engineering plastics.
As a further improvement of the above technical solution, the hall flowmeter assembly includes a draft tube, a magnetic rotor and a hall sensor, the draft tube is disposed in the housing, an impeller is fixedly disposed at a water inlet of the draft tube corresponding to the housing, a rotor support is fixedly disposed at a water outlet of the draft tube corresponding to the housing, one end of the magnetic rotor is inserted into the rotor support, and the other end of the magnetic rotor is inserted into the impeller; the Hall sensor is arranged on the outer side of the shell and corresponds to the position of the magnetic rotor.
The gas water heater comprises the water flow sensor, a water channel inlet, a heat exchanger, a water channel outlet and a main controller, wherein the water flow sensor and the heat exchanger are sequentially connected in series between the water channel inlet and the water channel outlet; the Hall flowmeter assembly is electrically connected with the main controller, and the temperature sensor is electrically connected with the main controller through the terminal line.
The utility model has the advantages that: when water in a water channel of the gas water heater is frozen and expands outwards, the ice blocks are extruded towards the piston because the freezing process is a slow process, the extruded piston moves rightwards, and air in the right section is discharged into external air through the ventilation port to release enough space for the expanded ice blocks, so that the shell is prevented from frost cracking or the Hall flow meter assembly is prevented from being damaged, and the protection effect can be realized under the condition that the water heater is powered off; for a water heater with a water return pipeline, when the circulating pipeline is blocked, the water flow sensor can also play a role in buffering water pressure; the gas heater is through setting up water flow sensor between heat exchanger and water route entry, and rivers can give main control unit with the size of discharge and the temperature transmission of rivers in real time when water flow sensor, then rivers heat through the heat exchanger, and the hot water after the heating flows from the export of water route.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.
Fig. 1 is a front view of a water flow sensor structure according to an embodiment of the present invention;
FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;
fig. 3 is a schematic structural view of an end cap according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a gas water heater according to an embodiment of the present invention.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The utility model provides an each technical feature can the interactive combination under the prerequisite of conflict each other.
Referring to fig. 1 to 3, this is an embodiment of the present invention, specifically:
a water flow sensor comprises a shell 03, wherein the shell 03 is provided with a water inlet 01 and a water outlet 02, a Hall flow meter assembly is arranged on the shell 03 and is arranged between the water inlet 01 and the water outlet 02; the shell 03 is provided with a pressure relief channel, the pressure relief channel is provided with a left section and a right section, a piston 21 is arranged in the pressure relief channel, the piston 21 is arranged between the left section and the right section, the left section is communicated with an inner cavity of the shell 03, and an elastic member 22 is arranged in the right section; an end cover 23 is arranged on the right side of the right section, the end cover 23 is detachably connected with the shell 03, the elastic component 22 is arranged between the end cover 23 and the piston 21, two ends of the elastic component 22 are respectively connected with the piston 21 and the end cover 23, and the end cover 23 is provided with a ventilation opening 29. When water in a water channel of the gas water heater is frozen and expands outwards, the ice blocks can be extruded to the piston 21 because the freezing process is a slow process, the extruded piston 21 moves rightwards, and air in the right section is discharged to the external air through the air vent 29 to release enough space for the expanded ice blocks, so that the shell 03 is prevented from being frozen or the Hall flow meter assembly is prevented from being damaged, and the protection effect can be realized under the condition that the water heater is powered off; for a water heater with a water return pipeline, when the circulating pipeline is blocked, the water flow sensor can also play a role in buffering water pressure; piston 21 uses for a long time, leaks easily after ageing, through setting up end cover 23 and casing 03 detachable connections for piston 21 can be changed, and water flow sensor's life is longer.
Further, in a preferred embodiment, the inner diameter of the left section is smaller than the inner diameter of the right section, and the piston 21 abuts against the left section from right to left; a rubber pad 28 is arranged between the piston 21 and the left section, the rubber pad 28 is fixedly connected with the piston 21, and the rubber pad 28 covers the left section. Therefore, when water in the water channel of the gas water heater normally flows, the piston 21 and the rubber pad 28 abut against the left section and the rubber pad 28 blocks the left section under the action of the elastic component 22, most of water pressure acts on the rubber pad 28, and only a small part of water pressure acts between the piston 21 and the inner wall of the right section, so that the sealing effect is good.
In order to improve the sealing effect of the piston 21, a sealing ring 26 is sleeved on the outer side of the piston 21, the sealing ring 26 is arranged between the piston 21 and the inner wall of the right section, and the sealing ring 26 is an elastic rubber ring in this embodiment.
Further as a preferred embodiment, a through hole 20 is formed in the end cover 23, a bolt 25 is arranged in the through hole 20, an internal threaded hole is formed in the housing 03, the bolt 25 is in threaded connection with the housing 03, and the end cover 23 is connected with the housing 03 through the bolt 25. Thus, the structure is simple, the assembly and disassembly are easy, the piston 21 or the elastic member 22 can be replaced conveniently, and the bolt 25 can also be a self-tapping screw.
Further in a preferred embodiment, the elastic member 22 is a spring. Simple structure like this, the setting of being convenient for, the both ends of spring respectively with piston 21, end cover 23 butt in this embodiment.
In a further preferred embodiment, a temperature sensor 27 is disposed in the left section, a main body of the temperature sensor 27 is fixedly connected to the piston 21, a terminal wire 24 of the temperature sensor 27 passes through the piston 21, the right section and the ventilation port 29, and the main body of the temperature sensor 27 or the terminal wire 24 is hermetically connected to the piston 21 so that the left section is not communicated with the right section. Thus, for a common gas water heater, the water temperature can be detected by replacing one water flow sensor, and the effects of pressure relief and freeze prevention can be effectively achieved; meanwhile, since the piston 21 is detachable, the temperature sensor 27 can be detached with the piston 21 and then replaced.
In order to prevent water in the left section from flowing to the right section through the small hole of the piston 21 via the terminal wire 24, the body of the temperature sensor 27 or the terminal wire 24 is connected to the piston 21 by means of an adhesive, which can close the small hole.
Further as a preferred embodiment, the housing 03 and the side wall of the pressure relief channel are integrally formed by engineering plastics. The production assembly of the water flow sensor of being convenient for like this, the sealed effect of integrated into one piece is also better moreover, prevents that the water in the casing 03 from flowing out between casing 03 and the lateral wall of pressure release passageway.
As a further preferable embodiment, the hall flowmeter assembly includes a draft tube 14, a magnetic rotor 12 and a hall sensor 11, the draft tube 14 is disposed in the housing 03, an impeller 13 is fixedly disposed at a position of the draft tube 14 corresponding to a water inlet 01 of the housing 03, a rotor support 15 is fixedly disposed at a position of the draft tube 14 corresponding to a water outlet 02 of the housing 03, one end of the magnetic rotor 12 is inserted into the rotor support 15, and the other end is inserted into the impeller 13; the hall sensor 11 is disposed outside the housing 03 and corresponds to the position of the magnetic rotor 12. Therefore, when water flows through the guide shell 14, the water rotates under the action of the impeller 13, the magnetic rotor 12 is further pushed to rotate, and the hall sensor 11 can detect the rotating speed of the magnetic rotor 12, namely the water flow in the guide shell 14.
Referring to fig. 4, it is an embodiment of the gas water heater of the present invention, which includes the above-mentioned water flow sensor 33, and further includes a water path inlet, a heat exchanger 31, a water path outlet and a main controller 32, wherein the water flow sensor 33 and the heat exchanger 31 are sequentially connected in series between the water path inlet and the water path outlet; the hall flowmeter assembly is electrically connected with the main controller 32, and the temperature sensor 27 is electrically connected with the main controller 32 through the terminal line 24. Through setting up water flow sensor 33 between heat exchanger 31 and the water route entry, rivers are during through water flow sensor 33, can give main control unit 32 with the size of discharge and the temperature transmission of rivers in real time, then main control unit 32 heats according to real-time flow, temperature control heat exchanger 31 uses different power, prevent to intake the too low condition that leads to out the water temperature not enough or the water yield is not enough that leads to of temperature, it is more energy-conserving, high-efficient, hot water after the heating flows from the export of water route.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.
Claims (10)
1. A water flow sensor, characterized by: the water-saving device comprises a shell, wherein the shell is provided with a water inlet and a water outlet, and a Hall flow meter assembly is arranged on the shell and is arranged between the water inlet and the water outlet; the shell is provided with a pressure relief channel, the pressure relief channel is provided with a left section and a right section, a piston is arranged in the pressure relief channel and is arranged between the left section and the right section, the left section is communicated with an inner cavity of the shell, and an elastic component is arranged in the right section; the right side of the right section is provided with an end cover, the end cover is detachably connected with the shell, the elastic component is arranged between the end cover and the piston, two ends of the elastic component are respectively connected with the piston and the end cover, and the end cover is provided with a ventilation opening.
2. A water flow sensor according to claim 1, wherein: the inner diameter of the left section is smaller than that of the right section, and the piston is abutted with the left section from right to left; a rubber pad is arranged between the piston and the left section and fixedly connected with the piston, and the rubber pad covers the left section.
3. A water flow sensor according to claim 1, wherein: the outside cover of piston is equipped with the sealing washer, the sealing washer locate the piston with between the inner wall of right side section.
4. A water flow sensor according to claim 1, wherein: the end cover is provided with a through hole, a bolt is arranged in the through hole, the shell is provided with an internal thread hole, the bolt is in threaded connection with the shell, and the end cover is connected with the shell through the bolt.
5. A water flow sensor according to claim 1, wherein: the elastic member is a spring.
6. A water flow sensor according to claim 1, wherein: the temperature sensor is arranged in the left section, a main body of the temperature sensor is fixedly connected with the piston, a terminal line of the temperature sensor penetrates through the piston, the right section and the ventilation port, and the main body or the terminal line of the temperature sensor is hermetically connected with the piston, so that the left section is not communicated with the right section.
7. A water flow sensor according to claim 6, wherein: the main body or the terminal wire of the temperature sensor is connected with the piston through an adhesive.
8. A water flow sensor according to claim 1, wherein: the shell and the side wall of the pressure relief channel are integrally formed by engineering plastics.
9. A water flow sensor according to claim 1, wherein: the Hall flow meter assembly comprises a guide cylinder, a magnetic rotor and a Hall sensor, wherein the guide cylinder is arranged in the shell, an impeller is fixedly arranged at a water inlet corresponding to the shell of the guide cylinder, a rotor support is fixedly arranged at a water outlet corresponding to the shell of the guide cylinder, one end of the magnetic rotor is inserted on the rotor support, and the other end of the magnetic rotor is inserted on the impeller; the Hall sensor is arranged on the outer side of the shell and corresponds to the position of the magnetic rotor.
10. A gas water heater, its characterized in that: the water flow sensor comprises the water flow sensor as claimed in claim 6, and further comprises a waterway inlet, a heat exchanger, a waterway outlet and a main controller, wherein the water flow sensor and the heat exchanger are sequentially connected in series between the waterway inlet and the waterway outlet; the Hall flowmeter assembly is electrically connected with the main controller, and the temperature sensor is electrically connected with the main controller through the terminal line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921257273.9U CN210051380U (en) | 2019-08-05 | 2019-08-05 | Water flow sensor and gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921257273.9U CN210051380U (en) | 2019-08-05 | 2019-08-05 | Water flow sensor and gas water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210051380U true CN210051380U (en) | 2020-02-11 |
Family
ID=69399155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921257273.9U Expired - Fee Related CN210051380U (en) | 2019-08-05 | 2019-08-05 | Water flow sensor and gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210051380U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332965A (en) * | 2019-08-05 | 2019-10-15 | 广东万家乐燃气具有限公司 | A kind of water flow sensor and gas heater |
-
2019
- 2019-08-05 CN CN201921257273.9U patent/CN210051380U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332965A (en) * | 2019-08-05 | 2019-10-15 | 广东万家乐燃气具有限公司 | A kind of water flow sensor and gas heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200211 |