CN201811304U - Anti-freeze pressure-limiting valve of gas water heater - Google Patents

Abstract

The utility model provides an anti-freeze pressure-limiting valve of a gas water heater, and is technically characterized in that the anti-freeze pressure-limiting valve comprises an anti-freeze pressure-limiting tube, a piston, an elastic device, a seal cover and a seal ring, wherein a first port, a water storage chamber and a second port are arranged on the anti-freeze pressure-limiting tube; the seal ring is sleeved on the piston; the piston is mounted inside the water storage chamber and movably sealed with the inner wall of the water storage chamber; an hole is formed in the seal cover; the seal cover is connected to the tail end of the water storage chamber; the elastic device is arranged inside the water storage chamber; the two ends of the elastic device are in contact with the inner side of the piston and the inner side of the seal cover respectively; the anti-freeze pressure-limiting tube is communicated with a water flow pipeline inside the gas water heater through the first port and the second port; and the water flow pipeline comprises a heat exchange straight pipe, a connecting bent pipe, a coil pipe, a water inlet pipe and a water outlet pipe. The utility model has the characteristics of effectively preventing the water flow pipe from being frozen in the low-temperature environment in case of power failure.

Description

The antifreeze pressure limiting valve of gas heater

Technical field: the utility model relates to a kind of antifreeze pressure limiting valve of 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; existing technical scheme adopts following three kinds of antifreeze modes usually: electrical heating antifreezing; the combustion gas heating and anti-freezing; the draining of manual drainage valve; preceding two kinds of antifreeze modes need civil power to work usually; need simultaneously constantly to heat; and consume a large amount of energy; electrical heating antifreezing and combustion gas heating and anti-freezing all possibly can't be worked under situation about having a power failure; the draining of manual drainage valve needs user's manual operations draining valve to discharge water; the user usually can forget and discharges water in actual the use; and cause the gas heater inner water tube by bursting by freezing, cause exist can't be normally antifreeze under the power failure situation etc. defective.For overcoming these defectives, the antifreeze pressure limiting valve of gas heater is developed.

Summary of the invention: technical problem to be solved in the utility model is the antifreeze pressure limiting valve that a kind of gas heater will be provided, and it can prevent that effectively water pipe is by bursting by freezing under the power failure situation when environment temperature is low.

The technical scheme that its technical problem that solves the utility model adopts is: it comprises antifreeze pressure limiting pipe, piston, Billiard apparatus, capping, sealing ring, described antifreeze pressure limiting pipe is provided with first port, reservoir chamber, second port, sealing ring is enclosed within on the piston, piston be installed in the reservoir chamber and with the inwall movable sealing of reservoir chamber, capping is provided with the hole, capping is connected in the end of reservoir chamber, Billiard apparatus places in the reservoir chamber, the Billiard apparatus two ends respectively with the interior side contacts of piston and capping, antifreeze pressure limiting pipe is by first port, in second port and the gas heater by the heat exchange straight tube, bridge piece, coil pipe, water inlet pipe, the water pipe that outlet pipe is formed is communicated with.

Described antifreeze pressure limiting pipe is connected in the water pipe on the water inlet pipe.

Described antifreeze pressure limiting pipe is connected in the water pipe on the outlet pipe.

Described antifreeze pressure limiting pipe is connected in the junction of heat exchange straight tube and water inlet pipe in the water pipe.

Described antifreeze pressure limiting pipe is connected in the junction of heat exchange straight tube and outlet pipe in the water pipe.

Described first port, second port and water pipe are fastening by latch.

Described piston and capping are that plastic material or copper product or aluminum alloy materials are made.

Described Billiard apparatus is a spring.

Described Billiard apparatus is an elastic bag.

Described closure threads is connected in the end of reservoir chamber.

The utility model is compared the beneficial effect that is produced with background technology:

1, because the utility model adopts antifreeze pressure limiting pipe, piston, Billiard apparatus, capping, sealing ring, antifreeze pressure limiting pipe is provided with first port, reservoir chamber, second port, sealing ring is enclosed within on the piston, piston be installed in the reservoir chamber and with the inwall movable sealing of reservoir chamber, capping is provided with the hole, capping is connected in the end of reservoir chamber, Billiard apparatus places in the reservoir chamber, the Billiard apparatus two ends respectively with the interior side contacts of piston and capping, antifreeze pressure limiting pipe is by first port, in second port and the gas heater by the heat exchange straight tube, bridge piece, coil pipe, water inlet pipe, the structure that the water pipe that outlet pipe is formed is communicated with, antifreeze pressure limiting pipe is by first port, second port is connected on the water pipe, water flows into the back from first port and flows out from second port, behind the water freezing in the water pipe, the part ice cube enters in the reservoir chamber in the antifreeze relief tube in the water pipe, reduced after the water freezing volumetric expansion ice cube greatly to the pressure of water pipe in the water pipe, so it can prevent that effectively water pipe is by bursting by freezing under the power failure situation when environment temperature is low.

Description of drawings: Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the stereogram of antifreeze pressure limiting valve 2 among Fig. 1.

Fig. 3 is the syndeton schematic diagram of water pipe in antifreeze pressure limiting valve 2 of Fig. 1 and the water pipe 1.

Fig. 4 is the explosive view of antifreeze pressure limiting valve 2 among Fig. 1.

Fig. 5 is the cutaway view of antifreeze pressure limiting valve 2 among Fig. 1.

Fig. 6 is the cutaway view of antifreeze pressure limiting pipe 4 among Fig. 4.

The specific embodiment: shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, accompanying drawing 5, accompanying drawing 6, present embodiment comprises antifreeze pressure limiting pipe 4, piston 7, Billiard apparatus 8, sealing ring 9, capping 10, antifreeze pressure limiting pipe 4 is provided with first port 3, reservoir chamber 6, second port 5, sealing ring 9 is enclosed within on the piston 7, piston 7 be installed in the reservoir chamber 6 and with the inwall movable sealing of reservoir chamber 6, capping 10 is provided with hole 12, capping 10 is connected in the end of reservoir chamber 6, can adopt connected mode such as be threaded to connect.Billiard apparatus 8 places in the reservoir chamber 6, Billiard apparatus 8 two ends respectively with the interior side contacts of piston 7 and capping 10, antifreeze pressure limiting pipe 4 is communicated with by the water pipe of being made up of heat exchange straight tube 13, bridge piece 14, coil pipe 15, water inlet pipe 16, outlet pipe 17 in first port 3, second port 5 and the gas heater 1, first port 3, second port 5 can be fastening by latch with water pipe 1, water in the water pipe 1 flows into the back from first port 3 and flows out from second port 5, and water also can flow into from first port 3 from second port 5 and flow out.

Water pipe 1 comprises heat exchange straight tube 13, bridge piece 14, coil pipe 15, water inlet pipe 16, outlet pipe 17.Be communicated with the formation heat exchanger channels by bridge piece 14 between the adjacent heat exchange straight tube 13, an end of heat exchanger channels is communicated with outlet pipe 17, and the other end of heat exchanger channels is communicated with water inlet pipe 16 by coil pipe 15, finally forms water pipe 1.

Piston 7 and capping 10 can be plastic material or copper product or aluminum alloy materials and make.Billiard apparatus 8 can be spring, elastic bag etc.Piston 7 and capping 10 are made for plastic material in the present embodiment, and Billiard apparatus 8 is a spring.

The quantity of sealing ring 9 can be more than one, as one, two, three, four etc.Water pipe 1 can be installed one or more antifreeze pressure limiting valves 2, and antifreeze pressure limiting valve 2 can be installed on water inlet pipe 16 or the outlet pipe 17, also can be installed in the junction of water inlet pipe 16 and heat exchange straight tube 13, also can be installed in the junction of outlet pipe 17 and heat exchange straight tube 13.

In the present embodiment, four antifreeze unit 2 are installed on the water inlet pipe 16 respectively, on the outlet pipe 17, the junction of the junction of water inlet pipe 16 and heat exchange straight tube 13, outlet pipe 17 and heat exchange straight tube 13.

Antifreeze pressure limiting pipe 4 sectional areas can less than, be equal to or greater than the sectional area of water pipe 1, in antifreeze pressure limiting pipe 4, expand behind the water freezing in the water pipe 1, when antifreeze pressure limiting pipe 4 sectional areas during greater than the sectional area of water pipe 1, the better effects if of antifreeze pressure release, antifreeze pressure limiting pipe 4 sectional areas are greater than the sectional area of water pipe 1 in the present embodiment.

Water heater is when normal the use, the pressure of running water acts on the end face of piston 7, the piston 7 that promotes in the antifreeze pressure limiting valve 2 moves to capping 10 directions, compression elasticity device 8 reaches the dynamic balance on piston 7 both sides, at this moment piston 7 is in poised state, and reservoir chamber 6 is at piston 7 and near the space that also has enough pistons 7 to move between the capping 10.

When environment temperature is low, water freezing in heat exchanging water pipe 13 in the water pipe 1, water inlet pipe 16, the outlet pipe 17 solidifies, volume becomes big behind the water freezing, promote piston 7 extruding Billiard apparatus 8, and move to the direction of capping 10, discharge in the hole 12 of air in the antifreeze pressure limiting pipe 4 from capping 10, the part ice cube enters in the antifreeze pressure limiting pipe 4 in the reservoir chamber 6, reduced after the water freezing volumetric expansion ice cube greatly to the pressure of water pipe in the water pipe 1, when avoiding environment temperature low in the gas heater water pipe in the water pipe 1 because of the water freezing spalling in managing.Antifreeze pressure limiting valve 2 does not need civil power, does not need user's manual operations draining valve to discharge water yet, and can prevent that effectively water pipe 1 is by bursting by freezing under the power failure situation when environment temperature is low.Can be applicable to 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.

Claims (10)

1. the antifreeze pressure limiting valve of a gas heater, it is characterized in that it comprises antifreeze pressure limiting pipe (4), piston (7), Billiard apparatus (8), sealing ring (9), capping (10), described antifreeze pressure limiting pipe (4) is provided with first port (3), reservoir chamber (6), second port (5), sealing ring (9) is enclosed within on the piston (7), piston (7) be installed in the reservoir chamber (6) and with the inwall movable sealing of reservoir chamber (6), capping (10) is provided with hole (12), capping (10) is connected in the end of reservoir chamber (6), Billiard apparatus (8) places in the reservoir chamber (6), Billiard apparatus (8) two ends respectively with the interior side contacts of piston (7) and capping (10), antifreeze pressure limiting pipe (4) is by first port (3), in second port (5) and the gas heater by heat exchange straight tube (13), bridge piece (14), coil pipe (15), water inlet pipe (16), the water pipe (1) that outlet pipe (17) is formed is communicated with.

2. the antifreeze pressure limiting valve of gas heater according to claim 1 is characterized in that described antifreeze pressure limiting pipe (4) is connected on the middle water inlet pipe (16) of water pipe (1).

3. the antifreeze pressure limiting valve of gas heater according to claim 1 is characterized in that described antifreeze pressure limiting pipe (4) is connected on the middle outlet pipe (17) of water pipe (1).

4. the antifreeze pressure limiting valve of gas heater according to claim 1 is characterized in that described antifreeze pressure limiting pipe (4) is connected in the junction of middle heat exchange straight tube (13) of water pipe (1) and water inlet pipe (16).

5. the antifreeze pressure limiting valve of gas heater according to claim 1 is characterized in that described antifreeze pressure limiting pipe (4) is connected in the junction of middle heat exchange straight tube (13) of water pipe (1) and outlet pipe (17).

6. according to the antifreeze pressure limiting valve of each described gas heater of claim 1～5, it is characterized in that described first port (3), second port (5) and water pipe (1) are fastening by latch (18).

7. the antifreeze pressure limiting valve of gas heater according to claim 6 is characterized in that described piston (7) and capping (10) make for plastic material or copper product or aluminum alloy materials.

8. the antifreeze pressure limiting valve of gas heater according to claim 7 is characterized in that described Billiard apparatus (8) is a spring.

9. the antifreeze pressure limiting valve of gas heater according to claim 7 is characterized in that described Billiard apparatus (8) is an elastic bag.

10. the antifreeze pressure limiting valve of gas heater according to claim 8 is characterized in that described capping (10) is threadedly connected to the end of reservoir chamber (6).

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