CN111829182B - Water inlet connector and gas water heater with same - Google Patents
Water inlet connector and gas water heater with same Download PDFInfo
- Publication number
- CN111829182B CN111829182B CN201910312032.8A CN201910312032A CN111829182B CN 111829182 B CN111829182 B CN 111829182B CN 201910312032 A CN201910312032 A CN 201910312032A CN 111829182 B CN111829182 B CN 111829182B
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- China
- Prior art keywords
- water inlet
- pipe body
- valve rod
- valve
- wall
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- 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.)
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Classifications
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- 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
- F24H9/12—Arrangements for connecting heaters to circulation pipes
- F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
- F24H9/139—Continuous flow heaters
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- 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
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- 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
A water inlet joint is characterized by comprising a pipe body, a valve core, a positioning ring, a first spring, a second spring, a sealing pin and a first reset piece, wherein the pipe body is axially hollow and is provided with a water drainage hole on the side wall; the valve core is axially arranged in the pipe body and can axially move, the valve core comprises a valve rod, a valve block and an extension part, the rear end of the valve rod is provided with a first limiting hole or a first limiting groove, the valve block is arranged in the middle of the valve rod and can be matched with the inner wall of the pipe body to open and close water inlet, and the extension part is positioned at the periphery of the valve block and is connected with the valve rod; the sealing pin is arranged in the drainage hole of the pipe body in a sealing way. The invention also discloses a gas water heater. Under the condition of forgetting to electrify, the water inlet joint can drain part of water, thereby effectively improving the expansion space and reducing the occurrence of frost cracking.
Description
Technical Field
The invention relates to an assembly fitting of a gas water heater, in particular to an anti-freezing water inlet joint and the gas water heater with the water inlet joint.
Background
More and more strong cold air phenomena occur, so that the condition that the gas water heater is frozen and cracked also happens occasionally. Although the common gas water heater is internally provided with the anti-freezing structure, most anti-freezing mechanisms can play a role under the condition of power-on, and when a power supply is forgotten to be plugged, the water heater is frozen and cracked, if the water heater is not found and treated in time, the water leakage of the whole machine can be caused, and the conditions of water soaking on a bottom plate, electrical leakage and the like which harm property and safety can be caused, so that great loss is caused.
Disclosure of Invention
The invention aims to solve the technical problem of providing a water inlet joint which can reduce the frost crack probability of a gas water heater under the condition of forgetting to electrify aiming at the technical current situation.
The invention aims to solve the other technical problem of providing a gas water heater which can prevent frost cracking to a certain extent under the condition of forgetting to electrify.
The technical scheme adopted by the invention for solving the technical problems is as follows: a water inlet joint is characterized by comprising
The pipe body is hollow in the axial direction, and a drain hole is formed in the side wall of the pipe body;
the valve core is axially arranged in the pipe body and can axially move, the valve core comprises a valve rod, a valve block and an extension part, the rear end of the valve rod is provided with a first limiting hole or a first limiting groove, the valve block is arranged in the middle of the valve rod and can be matched with the inner wall of the pipe body to open and close water inlet, and the extension part is positioned at the periphery of the valve block and is connected with the valve rod;
the positioning ring is arranged on the inner wall of the front end opening of the pipe body;
the first spring is arranged between the positioning ring and the front side wall of the extension part;
the second spring is arranged between the inner wall of the tube body and the rear side wall of the extension part, and the second spring has the characteristic that the elasticity is improved along with the temperature rise due to the adoption of the memory alloy;
the sealing pin is hermetically arranged in the drainage hole of the pipe body, and in the state that the valve rod moves backwards, the sealing pin moves inwards in the radial direction and is matched in the first limiting hole or the first limiting groove, and the drainage hole is in an open state; and
the first reset piece acts on the seal pin and always forces the seal pin to move radially inwards.
The outer side wall of the outer extension portion is provided with a second limiting hole or a second limiting groove, the side wall of the pipe body is provided with a mounting hole, a positioning pin is arranged in the mounting hole in a sealing mode and can move back and forth, a second reset piece is further arranged in the mounting hole and forces the positioning pin to move radially inwards, and the positioning pin moves radially inwards and is adapted to the second limiting hole or the second limiting groove when the valve rod moves backwards. The locating pin can further fix a position the valve rod with the cooperation of the second spacing hole or the second spacing groove, and the valve rod is ensured not to move forward, so that the water sealing stability is realized.
The specific structure of the positioning pin is preferably set as follows: the mounting hole in be equipped with the stop collar, be equipped with the supporting part in the port of this stop collar, the front end of locating pin is formed with the plush copper portion with the adaptation of second spacing hole or second spacing groove, the locating pin is located the rear end of plush copper portion and is formed with the cushion portion with the sealed complex of stop collar inner wall, the second resets and is located the stop collar and one end offsets with the supporting part, and the other end offsets with the cushion portion.
The specific mounting structure of the seal pin is preferably set as follows: the drain hole is internally provided with a fixed sleeve, the middle part of the seal pin is provided with a radial raised sealing part, the sealing part is in sealing fit with the inner wall of the fixed sleeve, the seal pin moves radially inwards and is adapted to the first limit hole or the first limit groove, the sealing part is separated from the inner wall of the fixed sleeve to enable the drain hole to be in an open state, the first reset piece is positioned in the fixed sleeve, one end of the first reset piece is abutted against the support ring, and the other end of the first reset piece is abutted against the sealing part.
For the lateral shifting that guarantees the valve rod can be stable, ensure the location accuracy, the middle part of holding ring has the confession the preceding guide ring that the valve rod front end set up, the body inner wall has the back guide ring that supplies the valve rod rear end to set up.
The inner wall of the pipe body is provided with a supporting seat for the arrangement of the second spring, a hollow cavity is formed in the middle of the supporting seat and matched with the valve block to realize the opening and closing of water inlet, and the rear guide ring is arranged in the hollow cavity of the supporting seat.
The mounting structure of the valve block and the valve stem is preferably as follows: the middle part of the valve rod is provided with a positioning part, the valve block is sleeved on the valve rod, one side surface of the valve block is abutted against the positioning part, and the other side surface of the valve block is provided with a buckle to realize positioning. Of course, the valve block and the valve stem may be a single piece.
And an electric heating rod capable of heating water flow in the tube body is arranged on one side of the tube body. The gas water heater can automatically heat when the temperature is lower than the set temperature, and frost cracking is prevented.
A gas water heater comprises a water heater body and a water inlet connector, wherein the water heater body is provided with a water inlet port and a water outlet port, and the rear end of the water inlet connector is arranged on the water inlet port.
Compared with the prior art, the invention has the advantages that: under the condition that the temperature is too low, the elasticity of the second spring is reduced, the valve rod is enabled to move inwards, the valve block closes the pipe body, the sealing pin positions the valve rod to limit the movement of the valve rod, meanwhile, the drain hole is opened, partial water in the gas water heater can be discharged through the drain hole, the improvement of an internal expansion space is facilitated, and the occurrence of frost cracking is relieved to a certain extent.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment.
Fig. 2 is an enlarged schematic view of the water inlet joint in fig. 1.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is an enlarged view of a portion B in fig. 2.
Fig. 5 is an enlarged view of the valve cartridge of fig. 2.
FIG. 6 is a schematic view of the water intake fitting in a drainage state.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1, the gas water heater in this embodiment includes a water heater body 100 and a water inlet connector 10, the water heater body 100 has a water inlet and a water outlet, and the rear end of the water inlet connector 10 is disposed on the water inlet.
As shown in fig. 2, 3 and 4, the water inlet joint 10 in the present embodiment includes a pipe body 1, a valve core 2, a positioning ring 3, a first spring 41, a second spring 42, a seal pin 5, a first restoring member 54, a positioning pin 6 and a second restoring member 65.
The pipe body 1 is hollow in the axial direction, and a drain hole and a mounting hole are formed in the side wall of the pipe body; an electric heating rod 7 which can heat the water flow in the tube body 1 is arranged on one side of the tube body 1.
Referring to fig. 5, the valve element 2 is axially disposed in the tube 1 and can axially move, the valve element 2 includes a valve rod 21, a valve block 22 and an outer extension portion 23, the rear end of the valve rod 21 has a limiting hole, the valve block 22 is disposed in the middle of the valve rod 21 and can be matched with the inner wall of the tube 1 to open and close water inlet, and the outer extension portion 23 is located at the periphery of the valve block 22 and connected with the valve rod 21; the outer side wall of the extension portion 23 is provided with a limiting groove 231, the middle portion of the valve rod 21 is provided with a positioning portion 24, the valve block 22 is sleeved on the valve rod 21, one side surface of the valve block abuts against the positioning portion 24, and the other side surface of the valve block is provided with a buckle 25 to realize positioning.
The positioning ring 3 is arranged on the inner wall of the front end opening of the pipe body 1, and the middle part of the positioning ring 3 is provided with a front guide ring 31 for arranging the front end of the valve rod 21.
The first spring 41 is arranged between the positioning ring 3 and the front side wall of the extension part 23; the second spring 42 is disposed between the inner wall of the tube 1 and the rear wall of the extension portion 23, and the second spring 42 has a property that elasticity is improved as temperature rises due to the memory alloy.
The seal pin 5 is hermetically arranged in the drain hole of the pipe body 1, and under the condition that the valve rod 21 moves backwards, the seal pin 5 moves radially inwards and is matched with the limiting hole, and the drain hole is in an open state.
The first restoring element 54 acts on the seal pin 5 and always forces the seal pin 5 radially inward. The positioning pin 6 is sealingly arranged in the mounting hole and can move back and forth, the second reset piece 65 is arranged in the mounting hole, the second reset piece 65 forces the positioning pin 6 to move radially inwards, and the positioning pin 6 moves radially inwards and is adapted in the limiting groove 231 in the state that the valve rod 21 moves backwards.
The first reset piece and the second reset piece in the embodiment both adopt reset springs.
As shown in fig. 4, the positioning pin 6 and the second returning member 65 are specifically mounted as follows: the mounting hole is internally provided with a limit sleeve 64, a support part 641 is arranged in a port of the limit sleeve 64, the front end of the positioning pin 6 is provided with a raised head part 61 matched with the limit groove 231, the rear end of the positioning pin 6, which is positioned at the raised head part 61, is provided with a cushion block part 62 in sealing fit with the inner wall of the limit sleeve 64, and the periphery of the cushion block part 62 is provided with a first sealing ring 63. The second reset piece 65 is located in the position-limiting sleeve 64, and one end of the second reset piece abuts against the supporting portion 641, and the other end abuts against the pad block portion 62.
Referring to fig. 3, the specific mounting structure of the seal pin and the first restoring member adopts the following arrangement: a fixed sleeve 53 is arranged in the drain hole, a support ring 531 is arranged in the fixed sleeve 53, and a gap 532 for discharging water flow is formed between the support ring 531 and the inner wall of the fixed sleeve.
The middle part of the seal pin 5 is provided with a radially raised seal part 51, the periphery of the seal part 51 is provided with a second seal ring 52, the seal part 51 is in sealing fit with the inner wall of the fixed sleeve 53, the seal pin 5 moves radially inwards and is adapted to the limiting hole, the seal part 51 is separated from the inner wall of the fixed sleeve 53 to enable the drain hole to be in an open state, the first reset piece 54 is positioned in the fixed sleeve 53, one end of the first reset piece is abutted against the support ring 531, and the other end of the first reset piece is abutted against the seal part. The outer end of the fixed sleeve 53 is provided with a drainage joint 55, and the inner wall of the drainage joint 55 is provided with a gasket 56.
The inner wall of the pipe body 1 is provided with a supporting seat 11 for the second spring 42 to be arranged, a hollow cavity formed in the middle of the supporting seat 11 is matched with the valve block 22 to realize the opening and closing of water inlet, and a rear guide ring 12 for the rear end of the valve rod 21 to be arranged is arranged in the hollow cavity of the supporting seat 11.
Under normal conditions, when the temperature of the inflow water is lower than 5 ℃, the heating rod 7 is started, the temperature of the inflow water joint end is not lower than 0 ℃ due to the action of the heating rod 7, and the risk of frost cracking of the whole machine is avoided.
As shown in fig. 6, when the power supply is forgotten to be turned on or damaged, the heating rod 7 does not work, when the temperature is about 0 ℃, the position of the second spring 42 is contracted to a certain position, at this time, the valve rod 21 moves backwards, the valve block 22 on the valve rod 21 is in contact with the cavity in the support seat 11 to realize sealing, at this time, the positioning pin 6 is just matched with the limiting groove 231 under the action of the first resetting piece 65, meanwhile, the sealing pin 5 moves downwards through the acting force of the second resetting piece 54 to penetrate through the limiting hole 211, the drain hole is opened, water flows to a sewer through the drain connector 55, so that the internal pipeline of the gas water heater generates a certain space, when water freezes, the gas water heater has a certain expansion space, and can also relieve the occurrence of frost cracking to a certain extent.
The second spring 42 in this embodiment is made of a memory alloy, and the memory alloy has the characteristics that the rigidity is higher (the elastic force is larger) when the temperature is higher, and when the temperature is lower, the rigidity is lower, and the relative position of the valve rod is moved to the left along with the temperature reduction.
The positioning pin 6 and the sealing pin 5 can realize the limiting at the same time before and after, block the inflow and the drainage of partial running water, and can avoid the greater loss caused by the temperature back warming after the gas water heater is frozen.
When the gas water heater with the anti-freezing device is powered on, the temperature of the water inlet joint end is not lower than 0 ℃, and the water inlet joint cannot work.
After the water inlet connector blocks water, if the normal use function is to be started, the positioning pin 6 needs to be pulled out, and meanwhile, the drainage connector 55 is disassembled, and the sealing pin 5 is pulled out, so that the initial state is recovered.
Claims (9)
1. A water inlet joint is characterized by comprising
The pipe body (1) is hollow in the axial direction, and a drain hole is formed in the side wall of the pipe body;
the valve core (2) is axially arranged in the pipe body (1) and can axially move, the valve core (2) comprises a valve rod (21), a valve block (22) and an outer extension part (23), a first limiting hole or a first limiting groove is formed in the rear end of the valve rod (21), the valve block (22) is arranged in the middle of the valve rod (21) and can be matched with the inner wall of the pipe body (1) to open and close water inlet, and the outer extension part (23) is located on the outer periphery of the valve block (22) and is connected with the valve rod (21);
the positioning ring (3) is arranged on the inner wall of the front end opening of the pipe body (1);
a first spring (41) provided between the positioning ring (3) and the front side wall of the extension portion (23);
a second spring (42) arranged between the inner wall of the tube body (1) and the rear side wall of the extension part (23), wherein the second spring (42) has the characteristic that the elasticity is improved along with the temperature rise due to the adoption of memory alloy;
the sealing pin (5) is arranged in the drainage hole of the pipe body (1) in a sealing mode, the sealing pin (5) moves inwards in the radial direction and is matched with the first limiting hole or the first limiting groove when the valve rod (21) moves backwards, and the drainage hole is in an open state; and
a first return element (54) acting on said sealing pin (5) and always forcing said sealing pin (5) radially inwards.
2. The water inlet joint according to claim 1, wherein the outer side wall of the outer extension portion (23) has a second limiting hole or a second limiting groove, the side wall of the pipe body (1) is provided with a mounting hole, a positioning pin (6) is sealingly disposed in the mounting hole and can move back and forth, a second reset member (65) is further disposed in the mounting hole, the second reset member (65) forces the positioning pin (6) to move radially inward, and the positioning pin (6) moves radially inward and is adapted to the second limiting hole or the second limiting groove when the valve rod (21) moves backward.
3. The water inlet joint according to claim 2, wherein a limit sleeve (64) is arranged in the mounting hole, a support part (641) is arranged in a port of the limit sleeve (64), a protruding head part (61) matched with the second limit hole or the second limit groove is formed at the front end of the positioning pin (6), a cushion block part (62) in sealing fit with the inner wall of the limit sleeve (64) is formed at the rear end of the positioning pin (6) positioned at the protruding head part (61), the second reset piece (65) is positioned in the limit sleeve (64), one end of the second reset piece is abutted against the support part (641), and the other end of the second reset piece is abutted against the cushion block part (62).
4. The water inlet joint as claimed in claim 1, wherein a fixed sleeve (53) is provided in the water discharge hole, a support ring (531) is provided in the fixed sleeve (53), a radially protruding sealing portion (51) is provided in the middle of the sealing pin (5), the sealing portion (51) is in sealing engagement with the inner wall of the fixed sleeve (53), the sealing pin (5) moves radially inward and is fitted into the first limit hole or the first limit groove, the sealing portion (51) is separated from the inner wall of the fixed sleeve (53) to open the water discharge hole, the first restoring member (54) is located in the fixed sleeve (53) and has one end abutting against the support ring (531) and the other end abutting against the sealing portion (51).
5. A water inlet joint according to claim 1, characterized in that the middle of the positioning ring (3) is provided with a front guide ring (31) for the front end of the valve rod (21), and the inner wall of the pipe body (1) is provided with a rear guide ring (12) for the rear end of the valve rod (21).
6. The water inlet joint according to claim 5, wherein the inner wall of the pipe body (1) is provided with a support seat (11) for the second spring (42) to be arranged, a hollow cavity is formed in the middle of the support seat and is matched with the valve block (22) to realize the opening and closing of the inlet water, and the rear guide ring (12) is arranged in the hollow cavity of the support seat (11).
7. The water inlet joint according to claim 1, wherein the valve rod (21) has a positioning portion (24) in the middle, the valve block (22) is sleeved on the valve rod (21) and one side surface of the valve block abuts against the positioning portion (24), and the other side surface of the valve block is provided with a buckle (25) to realize positioning.
8. A water inlet joint according to claim 1, characterized in that an electric heating rod (7) capable of heating the water flow in the pipe body (1) is arranged at one side of the pipe body (1).
9. A gas water heater with any one of the water inlet connectors of claims 1-8 comprises a water heater body (100) and a water inlet connector (10), wherein the water heater body (100) is provided with a water inlet port and a water outlet port, and the rear end of the water inlet connector (10) is arranged on the water inlet port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910312032.8A CN111829182B (en) | 2019-04-18 | 2019-04-18 | Water inlet connector and gas water heater with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910312032.8A CN111829182B (en) | 2019-04-18 | 2019-04-18 | Water inlet connector and gas water heater with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111829182A CN111829182A (en) | 2020-10-27 |
| CN111829182B true CN111829182B (en) | 2021-05-18 |
Family
ID=72915201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910312032.8A Active CN111829182B (en) | 2019-04-18 | 2019-04-18 | Water inlet connector and gas water heater with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111829182B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2454065A (en) * | 2007-10-25 | 2009-04-29 | Sasserath & Co Kg H | Valve assembly for water heaters |
| CN103954044A (en) * | 2014-04-30 | 2014-07-30 | 袁振华 | Pipeline frost-crack preventing automatic protective valve in water heater |
| CN205155325U (en) * | 2015-12-01 | 2016-04-13 | 浙江华地电子有限公司 | Water heater restriction valve |
| CN205780906U (en) * | 2016-06-16 | 2016-12-07 | 九牧厨卫股份有限公司 | A kind of frost crack proof device and tap |
| CN106641358A (en) * | 2017-02-20 | 2017-05-10 | 广东万家乐燃气具有限公司 | Safety valve with drainage function for rapid gas water heater |
-
2019
- 2019-04-18 CN CN201910312032.8A patent/CN111829182B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2454065A (en) * | 2007-10-25 | 2009-04-29 | Sasserath & Co Kg H | Valve assembly for water heaters |
| CN103954044A (en) * | 2014-04-30 | 2014-07-30 | 袁振华 | Pipeline frost-crack preventing automatic protective valve in water heater |
| CN205155325U (en) * | 2015-12-01 | 2016-04-13 | 浙江华地电子有限公司 | Water heater restriction valve |
| CN205780906U (en) * | 2016-06-16 | 2016-12-07 | 九牧厨卫股份有限公司 | A kind of frost crack proof device and tap |
| CN106641358A (en) * | 2017-02-20 | 2017-05-10 | 广东万家乐燃气具有限公司 | Safety valve with drainage function for rapid gas water heater |
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| Publication number | Publication date |
|---|---|
| CN111829182A (en) | 2020-10-27 |
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