CN2575563Y

CN2575563Y - Evaporator

Info

Publication number: CN2575563Y
Application number: CN02261021U
Authority: CN
Inventors: 沈永明
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-10-22
Filing date: 2002-10-22
Publication date: 2003-09-24
Anticipated expiration: 2012-10-22

Abstract

The utility model discloses an automatic water inlet valve of a solar water heater, which comprises a valve body, a valve cover, a water inlet, a water outlet, a valve core, a rubber diaphragm, a supporting piece, a spring, a sealing ring, etc. A valve cavity which is formed between the valve cover and the valve body is divided by the rubber diaphragm into an upper chamber and a lower chamber. The upper chamber and the lower chamber are sealed and separated. The supporting piece and the spring are arranged in the upper cavity chamber of the valve cavity. The edge of the rubber diaphragm is compacted between the valve body and the valve cover. The valve cover and the valve body are fixed together in a screw mode by threads which are mutually matched. The middle of the rubber diaphragm is provided with a perforation. The middle of the supporting piece is externally convex. A convex portion is sheathed in the perforation on the rubber diaphragm in a tight matching mode. The valve core and the convex portion of the supporting piece are fixed together after the valve core is penetrated through a water inlet mouth in the water inlet. The utility model has the advantages of compact and simple structure, very fast assembly speed, good sealing performance, no water leakage phenomenon occurrence and no water seepage phenomenon occurrence.

Description

The solar water heater automatic water inlet valve

Technical field the utility model relates to a kind of automatic water inlet valve that can control automatically the water inlet of solar water heater.

Background technology is to save the many defectives that exist in the manual water inlet control mode, and present most of solar water heaters have all adopted automatic water inlet control mode.Automatically the water inlet control mode needs to realize with automatic water inlet valve.The patent No. is that 00258974.5 utility model patent " automatic loading water control valve " is a kind of automatic water inlet valve, though it can realize control automatically to the water inlet of solar water heater water tank, but in actual application, also exist following defective: the one, be anti-bursting by freezing, valve gap and valve body generally all are to make with more pliable and tougher nylon or plastic material, utilize six screws to be fixed together between valve gap and valve body, bonding tightness between screw fixed position place's valve gap and valve is better like this, then relatively poor at other position bonding tightness, easily leak; The 2nd, link together by control lever, nut between diaphragm of rubber and support chip, the junction sealing between diaphragm of rubber and control lever is relatively poor, easily infiltration; The 3rd, structure is complicated, and needs to regulate with screw press, assembles up trouble.In addition, the inner water tank diameter of Jue Daduoshuo solar water heater all about 30cm, just can be met the need of market as long as produce unified automatic water inlet valve in the market, and the real genus of screw press is unnecessary.

The summary of the invention technical problem to be solved in the utility model be to propose a kind of simple and compact for structure, assembling speed is very fast, the solar water heater automatic water inlet valve of good seal performance.

For solving the problems of the technologies described above, the utility model solar water heater automatic water inlet valve comprises valve body, valve gap, water inlet, delivery port, spool, diaphragm of rubber, support chip, spring and sealing ring etc., diaphragm of rubber is separated into airtight upper and lower two Room that separate with the valve pocket that forms between valve gap and valve body, support chip and spring are positioned at the upper chamber of valve pocket, the edge of diaphragm of rubber is pressed in the middle of valve body and the valve gap, is tightened together by the screw thread that cooperatively interacts between valve gap and valve body.

Above-mentioned solar water heater automatic water inlet valve, offer a perforation in the middle of the described diaphragm of rubber, evagination in the middle of the described support chip, evagination part tight fit is set in the perforation on the described diaphragm of rubber, and the evagination that described spool passes behind the water inlet tap in the water inlet with described support chip partly is fixed together.

Above-mentioned solar water heater automatic water inlet valve, the sealing ring that is arranged between described spool and water inlet tap is a recess shape sealing ring, convexes with spool retaining muscle on the inwall of this recess shape sealing ring.

Above-mentioned solar water heater automatic water inlet valve is provided with a check-valves in described water inlet.

Owing to adopted above-mentioned technical pattern, during assembling, earlier support chip is set on the diaphragm of rubber, be spirally connected fixing with support chip after spool being passed the water inlet that sealing ring is set, with spring housing on support chip, then valve gap and valve body directly being tightened gets final product, very convenient, has improved assembling speed greatly.After the water inlet, when the water in the water tank reached high water level, the hydraulic pressure in the valve pocket was very big, and diaphragm of rubber is up pushed away, and propped up sealing ring thereby move on the pulling spool, thereby closed the effect that water inlet tap plays valve-off.And when the water level in the water tank was low, because the hydraulic pressure in this moment valve pocket is less, spring was subjected to the effect of restoring force, promoted diaphragm of rubber and spool to move down, and water flows into water tank after can entering valve pocket in the water inlet tap again.Like this, the utility model valve just can play the effect of automatic control water inlet.Owing to save parts such as screw press in the existing valve, valve rod, made the structure of whole valve become simple compact.Directly wear good seal performance between support chip and diaphragm of rubber by the tight fit mode.Be tightened together between valve gap and valve body, not only be convenient to assembling, and drainage can not take place all in conjunction with closely in the use in its joint each several part.After being convexly equipped with the retaining muscle on the inwall of recess shape sealing ring, can play the centering effect to spool, when preventing water into because the influence of the active force of water makes spool produce bad vibration, thereby can therefore not cause the too early effect of attrition of sealing ring to arrive its sealing property.The check-valves that is provided with in water inlet can prevent to run off through water inlet pipe owing to negative pressure of vacuum makes the hot water in the water-heater water tank under running water is cut off the water supply situation, and helps the health in the cold water pipe.

Description of drawings is described in further detail the utility model below in conjunction with the drawings and specific embodiments.

Fig. 1 is the structural representation of the temperature automatically controlled water intaking valve of solar water heater;

Fig. 2 is the planar structure schematic diagram of the plastics valve body of check-valves among Fig. 1;

Figure 3 shows that the structural representation of another embodiment of the utility model.

The specific embodiment

The solar water heater automatic water inlet valve comprises valve body 1, valve gap 2, water inlet 3, delivery port 4, spool 5, diaphragm of rubber 6, support chip 7, spring 8, recess shape sealing ring 9 and O-ring seals 10, valve body 1, valve gap 2 and support chip 7 all adopt the PA66 nylon material to make, and can overcome the easy bursting by freezing of metal material, corrosion-prone defective.Diaphragm of rubber 6 is separated into airtight upper and lower two Room that separate with the valve pocket of valve gap 2 and 1 formation of valve body, support chip 7 and spring 8 are positioned at the upper chamber of valve pocket, spring 8 is enclosed within on the support chip 7,1 of valve gap 2 and valve body are tightened together by the screw thread that cooperatively interacts, not only be convenient to assembling, and drainage can not take place.Offer groove on the upper end wall surface of valve body 1, the edge of diaphragm of rubber 6 is inserted in this groove and is pressed in valve body 1 and valve gap 2 centres.The centre of diaphragm of rubber 6 offers a perforation, the middle evagination of support chip 7, evagination part tight fit is set in the perforation on the diaphragm of rubber 6, spool 5 is a stainless steel countersunk raised head tapping screw, and the evaginations that spool 5 passes water inlet tap 11 backs and support chip 7 in the water inlet 3 partly are spirally connected and are fixed together.On the inwall of recess shape sealing ring 9, convex with four spool retaining muscle 12.Be provided with a check-valves 13 in the water inlet 3.This check-valves 13 directly is embedded in the water inlet 3, and liner one O-ring seals 10 backs are pushed against by water inlet pipe 14.Check-valves 13 comprises a plastics valve body 15 and rubber non-return body 16, the centre of plastics valve body 15 offers a non-return body dog hole 17, circumference offers six inlet openings 18 in the recess platform upper edge of non-return body dog hole 17 peripheries, rubber non-return body 16 barbs are fixed on the plastics valve body 15, and the periphery of rubber non-return body 16 covers inlet opening 18.Among the figure, 19 express water pipe, 21 expression passages.

The utility model is generally only done " double-tube type installation ": promptly have two from the indoor pipe that is connected to outside water box, one cooperates in the special feed-tank moisturizing of the utility model, another root then cooperate the applicant's " the floating type outlet pipe of solar water heater " often go out hot water, can realize fully automatic operation by such installation method: 24 hours hot water of weather uses with the opening usually, not advanced water influences, and also need not other any operation.

Do not adopting under the check-valves situation, for making control valve can become the valve that hot water flows out simultaneously, recess shape sealing ring 9 can be designed to the thin-walled sealing ring, and in the recess thin-walled of recess shape sealing ring 9 outside, on valve body wall, offer hot water and portalled for 20 (as shown in Figure 3).Like this, open indoor manual water intaking valve, when water tank water intake, be subjected to the pressuring action of hydraulic pressure, the recess thin-walled of recess shape sealing ring 9 portals hot water and 20 is adjacent to, and water can not portal from hot water and 20 flow to, thereby control valve still can play the effect of closing automatically.And the manual water intaking valve in close chamber, when opening indoor hot water tap, owing to produce negative pressure in the pipeline, the hot water that the hydraulic pressure in water tank and the valve pocket can make the recess thin-walled of recess shape sealing ring 9 throw off on the valve body wall portals 20, and the hot water in the water tank can portal by hot water and 20 flow out to the hot water tap.Therefore, the water tank from indoor to outdoor adopts that a water pipe can be realized intaking simultaneously, the purpose of water outlet, installs very conveniently, is suitable for the house and fits up, and a water pipe only has been installed, and is not easy to the user of " double-tube type installation ".

Claims

1, solar water heater automatic water inlet valve, comprise valve body, valve gap, water inlet, delivery port, spool, diaphragm of rubber, support chip, spring and sealing ring etc., described diaphragm of rubber is separated into airtight upper and lower two Room that separate with the valve pocket that forms between described valve gap and described valve body, described support chip and described spring are positioned at the upper chamber of valve pocket, the edge of described diaphragm of rubber is pressed in the middle of described valve body and the described valve gap, it is characterized in that, be tightened together by the screw thread that cooperatively interacts between described valve gap and described valve body.

2, solar water heater automatic water inlet valve as claimed in claim 1, it is characterized in that, offer a perforation in the middle of the described diaphragm of rubber, evagination in the middle of the described support chip, this evagination part tight fit is set in the perforation on the described diaphragm of rubber, and the evagination that described spool passes behind the water inlet tap in the water inlet with described support chip partly is fixed together.

3, solar water heater automatic water inlet valve as claimed in claim 1 or 2 is characterized in that, the sealing ring that is arranged between described spool and water inlet tap is a recess shape sealing ring, convexes with spool retaining muscle on the inwall of this recess shape sealing ring.

4, solar water heater automatic water inlet valve as claimed in claim 1 or 2 is characterized in that, is provided with a check-valves in described water inlet.

5, as solar water heater automatic water inlet valve as described in the claim 4, it is characterized in that, described check-valves comprises a plastics valve body and rubber non-return body, the centre of described plastics valve body offers a non-return body dog hole, recess platform upper edge circumference in described non-return body dog hole periphery offers six inlet openings, described rubber non-return body barb is fixed on the described plastics valve body, and the periphery of described rubber non-return body covers described inlet opening.

6, as solar water heater automatic water inlet valve as described in the claim 3, it is characterized in that described recess shape sealing ring is the thin-walled sealing ring, on the recess thin-walled outside of described recess shape sealing ring, described valve body wall, offer hot water and portal.