CN201652829U - Anti-freezing valve for gas water heater - Google Patents
Anti-freezing valve for gas water heater Download PDFInfo
- Publication number
- CN201652829U CN201652829U CN2010201402790U CN201020140279U CN201652829U CN 201652829 U CN201652829 U CN 201652829U CN 2010201402790 U CN2010201402790 U CN 2010201402790U CN 201020140279 U CN201020140279 U CN 201020140279U CN 201652829 U CN201652829 U CN 201652829U
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- straight tube
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Abstract
An anti-freezing valve for gas water heater comprises a sealing cover, a spring, a piston, an outer sealing ring and a pressure release pipe, wherein a water inlet is formed at the top end of the pressure release pipe, the piston is provided with an outer sealing groove, the outer sealing ring is sleeved on the outer sealing groove, a through hole is formed in the sealing cover, and the sealing cover is connected with the tail end of the pressure release pipe; the anti-freezing valve is mainly technically characterized in that the a water through straight pipe and an inner sealing ring are included as well, an inner sealing groove is formed on the piston, the inner sealing ring is sleeved on the inner sealing groove, a boss is arranged on the outer wall of the top part of the water through straight pipe, the piston is mounted on the outer wall below the boss in the water through straight pipe, the spring is sleeved on the outer wall between the piston in the water through straight pipe and the bottom of the water through straight pipe, the water through straight pipe passes out of the through hole of the sealing cover, and the front end of the pressure release pipe is connected with the heat exchange channel in the water heater through a water inlet. The utility model has the advantages that the firmness of the welding between a heat exchange pipe and the pressure release pipe is ensured, so as to avoid ice blocks from expanding and breaking the elbows after the water is frozen, and the like.
Description
Technical field: the utility model relates to a kind of gas heater frost valve, and it is applicable in the gas heaters such as chimney flue type gas heater, balanced type gas heater, forced exhaust formula gas heater, pressure supply and exhaust formula gas heater.
Background technology: existing gas heater, when preventing that environment temperature is low in the gas heater water pipe in the heat exchanger because of the water freezing spalling in managing, usually adopt a kind of frost valve of pipe bent position welding in heat exchanger with spring and piston, thereby to press to piston in pipe bent position antifreeze in volumetric expansion behind the water freezing in the heat exchanger tube, but the weld between original frost valve manufacture process heat exchanger tube and the frost valve splits easily, causes to exist not prison welding between heat exchanger tube and the frost valve, icing back ice cube easily defectives such as bend pipe spallings.In order to overcome these defectives, gas heater is developed with frost valve.
Summary of the invention: technical problem to be solved in the utility model is that a kind of gas heater frost valve will be provided, and it can make firm welding between heat exchanger tube and the frost valve effectively, the back ice cube spalling bend pipe of avoiding freezing.
The technical scheme that its technical problem that solves the utility model adopts is: it comprises seal cover, spring, piston, exterior seal ring, relief tube, described relief tube top is provided with water inlet, piston is provided with the external seal groove, exterior seal ring is enclosed within on the external seal groove, be provided with through hole in the seal cover, seal cover is connected with the end of relief tube, it also comprises the water flowing straight tube, inner seal ring, described piston is provided with interior seal groove, inner seal ring is enclosed within on the interior seal groove, the top exterior walls of water flowing straight tube is provided with boss, piston is installed on the outer wall of boss below in the water flowing straight tube, on the outer wall between the bottom of spring housing piston and water flowing straight tube in the water flowing straight tube, the water flowing straight tube passes the through hole in the seal cover, and the front end of relief tube is connected with heat exchanger channels in the water heater by water inlet.
The bottom outer wall of water flowing straight tube is provided with back-up ring, on the outer wall between the bottom guide ring of spring housing piston and water flowing straight tube in the water flowing straight tube.
Described water flowing cavity wall is provided with step, and piston is installed on the top exterior walls of water flowing straight tube and by step and locatees.
The front inner wall of described relief tube is provided with the water flowing chamber, and the front end of water flowing straight tube is communicated with heat exchanger channels by the water flowing chamber.
The front inner wall of described relief tube is provided with the water flowing chamber, and the front end of water flowing straight tube is communicated with heat exchanger channels by the water flowing chamber.
The front end of described relief tube is connected with the water inlet end of heat exchanger channels in the water heater by water inlet.
The front end of described relief tube is connected with the water side of heat exchanger channels in the water heater by water inlet.
Described seal cover is a clamp nut, and seal cover is connected with the end thread of relief tube.
Described exterior seal ring, inner seal ring are the O RunddichtringO.
The utility model is compared the beneficial effect that is produced with background technology:
1, because the utility model adopts the water flowing straight tube, inner seal ring, described piston is provided with interior seal groove, inner seal ring is enclosed within on the interior seal groove, the top exterior walls of water flowing straight tube is provided with boss, piston is installed on the outer wall of boss below in the water flowing straight tube, on the outer wall between the bottom of spring housing piston and water flowing straight tube in the water flowing straight tube, the water flowing straight tube passes the through hole in the seal cover, the structure that the front end of relief tube is connected with heat exchanger channels in the water heater by water inlet, so it can make firm welding between heat exchanger tube and the relief tube effectively, the back ice cube spalling bend pipe of avoiding freezing.
Description of drawings: Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the axonometric drawing of Fig. 1.
Fig. 3 is the location diagram of frost valve in gas heater among Fig. 1.
Fig. 4 is the structural representation of heat exchanger channels 7 among Fig. 3.
The specific embodiment: shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, present embodiment comprises seal cover 1, spring 2, piston 3, exterior seal ring 4, inner seal ring 10, water flowing straight tube 5, relief tube 6, heat exchanger channels 7.Be clamp nut and be provided with through hole 8 in the seal cover 1, piston 3 is provided with external seal groove 11, interior seal groove 12, and exterior seal ring 4, inner seal ring 10 are the O RunddichtringO, and exterior seal ring 4 is enclosed within on the external seal groove 11, in inner seal ring 10 is enclosed within on the seal groove 12.The top inwall of relief tube 6 is provided with water flowing chamber 14, water flowing chamber 14 inwalls are provided with step 17, the top exterior walls of water flowing straight tube 5 is provided with boss 20, piston 3 is installed on the outer wall of boss 20 belows in the water flowing straight tube 5, by step 17 location, the front end of water flowing straight tube 5 is communicated with heat exchanger channels 7 by water flowing chamber 14.Spring 2 is enclosed within on the outer wall between the bottom of piston 3 and water flowing straight tube 5 in the water flowing straight tube 5, the bottom outer wall of water flowing straight tube 5 is provided with back-up ring 16 in the present embodiment, and the interior side contacts of the inboard of back-up ring 16 and seal cover 1, spring 2 is enclosed within on the outer wall between the bottom guide ring 16 of piston 3 and water flowing straight tube 5 in the water flowing straight tube 5, spring 2 two ends contact with the end face of piston 3 with back-up ring 16 respectively, and water flowing straight tube 5 passes the through hole 8 in the seal cover 1.Relief tube 6 tops are provided with water inlet 18, the top of relief tube 6 is connected with the water side or the water side of heat exchanger channels 7 in the water heater by water inlet 18, heat exchanger channels 7 is the pipeline that heat exchanger tube in the water heater and water inlet end thereof and water side constitute, and the end of relief tube 6 is threaded with seal cover 1.
Frost valve is installed on the water inlet pipe 18 of heat exchanger or on the outlet pipe 19 and fixing by welding.When the compression stress of spring 2 less than the expansive force that freezes, greater than the normal pressure that uses of running water, behind the water freezing of heat exchanger channels 7, because the compression stress of spring 2 is less than the expansive force of water freezing, freeze and expand by the inner chamber 9 of water flowing chamber 14 to relief tube 6, spring 2 compressions, piston 3 promotes to the end of relief tube 6.After adopting this structure, heat exchanger tube directly is communicated with water flowing chamber 14, avoids pipe bent position ice cube squeeze crack bend pipe, and can make firm welding between heat exchanger channels 7 and the relief tube, and the effect of pressure release is better.
Water heater is when normal the use, the pressure of running water acts on the end face of piston 3 in the heat exchanger channels 7 in the heat exchanger by water flowing chamber 14, promoting piston 3 moves to the direction of seal cover 1, compression spring 2 reaches the dynamic balance on piston 3 both sides, at this moment the normal pressure that uses of spring compression stress and running water is in poised state, the space that also has enough pistons 3 to move between piston 3 and close seal cover 1 in the relief tube 6.
When environment temperature is low, the water freezing of heat exchanger channels 7 solidifies in the heat exchanger, volume becomes big behind the water freezing, promote piston 3 extrusion springs 2 by water flowing chamber 14, and move to the direction of seal cover 1, the through hole 8 of the air at inner chamber 9 places of relief tube 6 from seal cover 1 discharged, the part ice cube enters in the relief tube 6, reduced after the water freezing volumetric expansion ice cube greatly to the pressure of heat exchanger channels in the heat exchanger 7, water pipe when avoiding environment temperature low in the interior heat exchanger of gas heater is because of the water freezing spalling in managing, can play antifreeze effect effectively, the automaticity height.
Claims (10)
1. gas heater frost valve, it comprises seal cover (1), spring (2), piston (3), exterior seal ring (4), relief tube (6), described relief tube (6) top is provided with water inlet (18), piston (3) is provided with external seal groove (11), exterior seal ring (4) is enclosed within on the external seal groove (11), be provided with through hole (8) in the seal cover (1), seal cover (1) is connected with the end of relief tube (6), it is characterized in that it also comprises water flowing straight tube (5), inner seal ring (10), described piston (3) is provided with interior seal groove (12), inner seal ring (10) is enclosed within on the interior seal groove (12), the top exterior walls of water flowing straight tube (5) is provided with boss (20), piston (3) is installed on the outer wall of boss (20) below in the water flowing straight tube (5), spring (2) is enclosed within on the outer wall between the bottom of piston (3) and water flowing straight tube (5) in the water flowing straight tube (5), water flowing straight tube (5) passes the through hole (8) in the seal cover (1), and the front end of relief tube (6) is connected with heat exchanger channels (7) in the water heater by water inlet (18).
2. gas heater frost valve according to claim 1, the bottom outer wall that it is characterized in that described water flowing straight tube (5) is provided with back-up ring (16), and spring (2) is enclosed within on the outer wall between the bottom guide ring (16) of piston (3) and water flowing straight tube (5) in the water flowing straight tube (5).
3. gas heater frost valve according to claim 1 and 2 is characterized in that described water flowing chamber (14) inwall is provided with step (17), and piston (3) is installed on the top exterior walls of water flowing straight tube (5) and by step (17) location.
4. gas heater frost valve according to claim 1 and 2 is characterized in that the front inner wall of described relief tube (6) is provided with water flowing chamber (14), and the front end of water flowing straight tube (5) is communicated with heat exchanger channels (7) by water flowing chamber (14).
5. gas heater frost valve according to claim 3 is characterized in that the front inner wall of described relief tube (6) is provided with water flowing chamber (14), and the front end of water flowing straight tube (5) is communicated with heat exchanger channels (7) by water flowing chamber (14).
6. gas heater frost valve according to claim 4 is characterized in that the front end of described relief tube (6) is connected with the water inlet end of heat exchanger channels (7) in the water heater by water inlet (18).
7. gas heater frost valve according to claim 5 is characterized in that the front end of described relief tube (6) is connected with the water side of heat exchanger channels (7) in the water heater by water inlet (18).
8. gas heater frost valve according to claim 6 is characterized in that described seal cover (1) is a clamp nut, and seal cover (1) is connected with the end thread of relief tube (6).
9. gas heater frost valve according to claim 7 is characterized in that described seal cover (1) is a clamp nut, and seal cover (1) is connected with the end thread of relief tube (6).
10. gas heater frost valve according to claim 9 is characterized in that described exterior seal ring (4), inner seal ring (10) are the O RunddichtringO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201402790U CN201652829U (en) | 2010-03-23 | 2010-03-23 | Anti-freezing valve for gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201402790U CN201652829U (en) | 2010-03-23 | 2010-03-23 | Anti-freezing valve for gas water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201652829U true CN201652829U (en) | 2010-11-24 |
Family
ID=43118069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201402790U Expired - Lifetime CN201652829U (en) | 2010-03-23 | 2010-03-23 | Anti-freezing valve for gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201652829U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811145A (en) * | 2022-04-27 | 2022-07-29 | 宁波方太厨具有限公司 | Prevent frostbite and split valve body and contain its gas heater |
-
2010
- 2010-03-23 CN CN2010201402790U patent/CN201652829U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811145A (en) * | 2022-04-27 | 2022-07-29 | 宁波方太厨具有限公司 | Prevent frostbite and split valve body and contain its gas heater |
| CN114811145B (en) * | 2022-04-27 | 2023-03-10 | 宁波方太厨具有限公司 | Prevent frostbite and split valve body and contain its gas heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |