CN212203238U - Double-source hot water faucet capable of automatically switching - Google Patents

Abstract

The utility model discloses a but two source hot water automatic switch-over tap, which comprises a valve body, the cold water subassembly of intaking, solar hot water subassembly and delivery port of intaking, be provided with the case subassembly that can be linked together with the delivery port on the valve body, the valve body embeds there is the hot runner, one side of valve body is provided with the gas heater inlet opening that can be linked together with gas heater, the gas heater inlet opening is linked together and forms gas hot water inlet passage through hot runner and case subassembly, solar hot water subassembly of intaking is linked together and forms solar hot water inlet passage through hot runner and case subassembly, the hot runner embeds there is the temperature sensing shutoff piece that can realize carrying out the alternative to gas hot water inlet passage or solar hot water inlet passage and cut off. The utility model has the advantages of it is following and effect: the tap can realize automatic switching of the solar water heater and the standby water heater so as to provide hot water supply of double heat sources.

Description

Double-source hot water faucet capable of automatically switching

Technical Field

The utility model relates to a tap, in particular to but two source hot water automatic switch-over tap.

Background

Solar energy is in great demand in China, wide application range and obvious economic benefit, and the popularization and the use of the solar water heater can not only save a great deal of fossil energy, but also lighten the increasing environmental pressure at present. The solar energy received by the earth surface is unstable due to the influence of various aspects such as weather, sunshine, environment and the like, so that the hot water supply of a single solar water heater in a family is difficult to meet the water consumption requirement of a common family.

In order to meet the requirements of a family on reasonable energy conservation and no influence on use, an effective alternative scheme is to install a common water storage type solar water heater as a main part and install another instant heating type water heater as an auxiliary spare part, but the scheme can cause the situation that the water heaters need to be switched at any time in use.

If the hot water in the solar water heater is used up, if the standby water heater needs to be manually switched each time, the operation is troublesome on one hand, and on the other hand, the experience is poor in the switching time interval process. In addition, no faucet capable of automatically switching the solar water heater and the standby water heater exists in the market, so that improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a but two source hot water automatic switch-over tap, this kind of tap can realize automatic switch-over solar water heater and reserve water heater to the hot water supply who provides two heat sources.

The above technical purpose of the present invention can be achieved by the following technical solutions: the solar hot water system comprises a valve body, a cold water inlet assembly, a solar hot water inlet assembly and a water outlet, wherein the valve body is provided with a valve core assembly which can be communicated with the water outlet, the valve core assembly is connected with a handle, a partition plate which can divide a valve inner cavity into a hot runner and a cold runner is arranged in the valve body, and one side of the valve body is provided with a gas water heater water inlet hole which can be communicated with a gas water heater;

the valve body is internally provided with a first functional hole and a second functional hole which are coaxially arranged in the hot runner, a gap is formed between the first functional hole and the second functional hole, and the second functional hole is respectively communicated with the solar hot water inlet assembly and the gas water heater inlet hole;

a first spring is arranged in the first functional hole, a second spring is arranged in the second functional hole, a plugging mechanism capable of performing thermal extension or cold shortening according to different water temperatures is arranged between the first spring and the second spring, the stiffness coefficient of the second spring is smaller than that of the first spring, a supporting piece capable of abutting against the first spring is arranged at one end, far away from the plugging mechanism, of the first spring, and a limiting step capable of abutting against the second spring is arranged at one end, far away from the plugging mechanism, of the second functional hole;

the plugging mechanism extends to open the gap when meeting hot water, so that solar hot water is communicated with the valve core assembly through the second functional hole and the gap in sequence, and the plugging mechanism plugs the water inlet hole of the gas water heater; the blocking mechanism is shortened when meeting cold water to block the gap, a passage between the second functional hole and the valve core assembly is cut off, and at the moment, the water inlet hole of the gas water heater is communicated with the gap and the valve core assembly.

The utility model discloses a further set up to: the blocking mechanism comprises a closure shell positioned in the second functional hole, a first sealing groove, a communicating groove and a second sealing groove are sequentially arranged on the shell of the closure shell, the communicating groove is communicated with the water inlet hole of the gas water heater, sealing rings are respectively arranged in the first sealing groove and the second sealing groove, the two sealing rings are respectively positioned at two sides of the water inlet hole of the gas water heater, each sealing ring is in sealing butt joint with the inner wall of the second functional hole,

one side of the intercepting shell is abutted against the second spring, a temperature sensing element which can extend or shorten according to different water temperatures is arranged in the intercepting shell in a penetrating mode, one end of the temperature sensing element is abutted against the first spring, a shunting pad which can enable water flowing out of the solar hot water inlet assembly to flow to a gap is further sleeved on the temperature sensing element, and a limiting block which can be abutted against the shunting pad is arranged at one end, far away from the first function hole, of the intercepting shell;

when cold water flows out of the solar hot water inlet assembly, the temperature sensing element is in a natural state, the cut-off shell cuts off the communication between the gap and the valve core assembly, and the water inlet hole of the gas water heater is communicated with the gap and the valve core assembly through the communication groove; when the solar hot water inlet assembly flows out hot water, the temperature sensing element is heated and extends and drives the intercepting shell to move towards the direction far away from the first function hole, at the moment, the solar hot water is conducted with the valve core assembly through the second function hole and the gap in sequence, and the intercepting shell cuts off the communication between the communication groove and the gap.

The utility model discloses a further set up to: support piece including with first function hole threaded connection's fixed cover, the one end of fixed cover orientation damming shell is provided with can with the sealed complex of damming shell seal flow face, fixed cover embeds there is adjustable inner core, adjustable inner core and fixed cover threaded connection, first spring is located the inside of adjustable inner core, just the one end of first spring and the inner wall looks butt of adjustable inner core.

The utility model discloses a further set up to: a gasket is arranged between the first spring and the temperature sensing element, a clamping groove is formed in the inner wall of one end, far away from the adjusting position, of the adjustable inner core, and a clamping spring used for limiting the gasket is arranged in the clamping groove.

The utility model discloses a further set up to: the second function hole is internally provided with a positioning step for abutting against the closure shell, and the closure shell can move between the positioning step and the fixed sleeve.

The utility model discloses a further set up to: one end of the shunting pad is provided with a counter bore, a plurality of circumferentially distributed shunting grooves are arranged on the outer ring of the shunting pad, and each shunting groove is communicated with the counter bore.

The utility model discloses a further set up to: the partition plate is provided with a connecting hole, a check valve is arranged in the connecting hole, and the check valve allows fluid to flow into the cold runner from the hot runner;

still separate in the hot runner to be equipped with the cavity that is used for carrying solar hot water inlet assembly to remain cold water, the one end and the check valve of cavity are linked together, one side in second function hole is run through and is provided with the hole of stepping down that can be linked together with the cavity, the cavity accessible hole of stepping down communicates with second function hole, works as when the one end of intercepting shell is contradicted the location step on the second function hole, the shell of intercepting shell can block up the hole of stepping down in order to cut off the intercommunication between second function hole and the cavity.

The utility model discloses a further set up to: the cold water inlet assembly is connected with the valve body through a flow limiting check valve, and the maximum flow preset value of the flow limiting check valve is smaller than that of the check valve under the same water pressure.

The utility model discloses a further set up to: one side of the fixed sleeve is provided with an inner hexagonal through hole which can be matched with an inner hexagonal wrench in a penetrating mode, and one side, facing the inner hexagonal through hole, of the adjustable inner core is provided with an adjusting position which can be matched with a screwdriver.

The utility model discloses a further set up to: the valve body still is provided with the third function hole in the hot runner, the third function hole just is with the axle center setting with second function hole intercommunication, second function hole and third function hole are located the both ends of solar hot water inlet respectively, the downthehole threaded connection of third function hole has the end cap that can cut off second function hole and the axial intercommunication of third function hole, the one end butt check valve of end cap, the basin has been seted up to one side of end cap, the cavity switches on mutually with the check valve through crossing the basin.

To sum up, the utility model discloses following beneficial effect has: by applying the principle that the temperature sensing element expands with heat and contracts with cold along with the temperature change and adopting a special structure, the automatic switching function of the water faucet supply source between the common water heater and the standby water heater is realized. The faucet is applicable to being mainly provided with a solar water heater and being assisted by other instant heating type water heaters (taking a gas water heater as an example in the application), so that the product characteristics of not only reasonably saving energy but also not influencing the experience effect are achieved. The principles of the present invention are not limited to conventional shower faucets, and may be used in addition to other faucets, such as basin faucets, kitchen faucets, and other water terminals.

Drawings

FIG. 1 is a schematic structural diagram of an automatic switching faucet according to a first embodiment;

FIG. 2 is an exploded schematic view of the structure of FIG. 1;

FIG. 3 is a cross-sectional view of the structure of FIG. 1;

FIG. 4 is a sectional view of the structure in another direction of FIG. 1;

FIG. 5 is a cross-sectional structural view of the valve body of FIG. 2;

fig. 6 is a schematic view of the pouch of fig. 4;

FIG. 7 is a cross-sectional view of the structure of FIG. 6;

FIG. 8 is a schematic diagram of the construction of the adjustable core of FIG. 4;

FIG. 9 is a cross-sectional view of the structure of FIG. 8;

fig. 10 is a schematic structural view of the closure shell of fig. 4;

FIG. 11 is a cross-sectional view of the structure of FIG. 10;

FIG. 12 is a schematic structural view of the temperature sensing element of FIG. 4;

FIG. 13 is a schematic view of the configuration of the diverter pad of FIG. 4;

FIG. 14 is a schematic view of the plug of FIG. 4;

FIG. 15 is a schematic view of another plug according to the second embodiment;

FIG. 16 is a schematic diagram of the solar hot water flow direction of water circuit J;

FIG. 17 is a schematic view of the flow of cold water in the water paths M and K;

FIG. 18 is a schematic view of the hot water flow direction of the water circuit L;

fig. 19 is a schematic view of the flow direction of the mixed water in the water passage N.

Reference numerals: 1. a valve body; 2. a cold water intake assembly; 3. a solar hot water inlet assembly; 4. a water outlet; 5. a valve core assembly; 6. a handle; 7. a hot runner; 8. a cold runner; 9. a partition plate; 10. a water inlet of the gas water heater; 11. a temperature-sensitive plugging member; 12. a first functional hole; 13. a second functional hole; 14. a gap; 15. a first spring; 16. a support member; 17. a gasket; 18. a closure shell; 19. a first seal groove; 20. a communicating groove; 21. a second seal groove; 22. a seal ring; 23. a limiting step; 24. a second spring; 25. a temperature sensing element; 26. a shunt pad; 27. a limiting block; 28. fixing a sleeve; 29. sealing the flow surface; 30. an adjustable inner core; 31. a hexagonal through hole; 32. adjusting the position; 33. a card slot; 34. a clamp spring; 35. a telescopic section; 36. a temperature sensing section; 37. positioning the bump; 38. positioning a step; 39. a counter bore; 40. a shunt slot; 41. a third functional hole; 42. connecting holes; 43. a check valve; 44. a plug; 45. a hexagonal blind hole; 46. a convex column; 47. passing through a water tank; 48. a trench; 49. a cavity; 50. a hole of abdication; 51. a flow-restricting check valve; 52. a cold water inlet hole; 53. a hot water inlet hole; 54. a water mixing and water outlet hole; 55. a cylinder.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows:

as shown in fig. 1-6, the double-source hot water automatic switching faucet comprises a valve body 1, wherein a cold water inlet assembly 2, a solar hot water inlet assembly 3 and a water outlet 4 are arranged on the valve body 1, a valve core assembly 5 is further arranged on the valve body 1, the cold water inlet assembly 2 and the solar hot water inlet assembly 3 are communicated to the valve core assembly 5, one side of the valve core assembly 5 is further communicated with the water outlet 4, and a handle 6 is connected to the valve core assembly 5.

The above structure and connection method are prior art and will not be described in detail herein. For details, reference may be made to the chinese patent publication No. CN202867920U and the chinese patent publication No. CN 109323014A. For the sake of understanding, the present principles are briefly explained as follows: the cold water flowing into the cold water inlet assembly 2 and the water flowing into the solar water heating assembly flow into the valve core assembly 5 and flow out from the valve core assembly 5 to the water outlet 4. The valve core component 5 can be controlled to be communicated with the cold water inlet component 2 independently or communicated with the hot water inlet component independently or communicated with the cold water inlet component 2 and the hot water inlet component simultaneously so as to control the cold water inlet flow and the hot water inlet flow and the mixing proportion thereof, thereby controlling the outlet water temperature of the water outlet 4. The handle 6 drives the valve core assembly 5 to realize the water switching function in a front-back opening and closing angle mode, and drives the valve core assembly 5 to realize the cold-hot mixed water temperature adjusting function in a left-right rotation angle mode.

As shown in fig. 2, the valve body 1 has a partition plate 9 built therein, which partitions the valve inner chamber into a hot runner 7 and a cold runner 8. One side of the valve body 1 is provided with a gas water heater water inlet hole 10 which can be communicated with a gas water heater, the gas water heater water inlet hole 10 is communicated with the valve core component 5 through a hot runner 7 to form a gas hot water inlet passage, and the solar hot water inlet component 3 is communicated with the valve core component 5 through the hot runner 7 to form a solar hot water inlet passage. The cold water inlet assembly 2 is communicated with the valve core assembly 5 through a cold runner 8. The hot runner 7 is internally provided with a temperature sensing plugging piece 11 which can realize the alternative cutting of a fuel gas hot water inlet passage or a solar hot water inlet passage.

Further, the valve body 1 is provided with a first functional hole 12 and a second functional hole 13 coaxially provided in the hot runner 7, and a gap 14 is provided between the first functional hole 12 and the second functional hole 13. The second functional hole 13 is respectively communicated with the solar hot water inlet component 3 and the gas water heater inlet hole 10.

The temperature-sensitive plugging piece 11 comprises a first spring 15 positioned in the first functional hole 12, a second spring 24 positioned in the second functional hole 13 and a plugging mechanism positioned between the first spring 15 and the second spring 24, wherein the plugging mechanism can expand with heat and contract with cold so as to extend or shorten according to different water temperatures, the stiffness coefficient of the second spring 24 is smaller than that of the first spring 15, a supporting piece 16 capable of abutting against the first spring 15 is arranged at one end, away from the plugging mechanism, of the first spring 15, and a limiting step 23 capable of abutting against the second spring 24 is arranged at one end, away from the plugging mechanism, of the second functional hole 13;

the plugging mechanism stretches when meeting hot water to open the gap 14, so that solar hot water is communicated with the valve core assembly 5 through the second functional hole 13 and the gap 14 in sequence, and the plugging mechanism plugs the water inlet hole 10 of the gas water heater; the blocking mechanism is shortened when meeting cold water to block the gap 14, a passage between the second functional hole 13 and the valve core assembly 5 is cut off, and at the moment, the water inlet hole 10 of the gas water heater is communicated with the gap 14 and the valve core assembly 5.

Further, normal-temperature water is arranged between the cold water and the hot water, and the range of the normal-temperature water is 20-25 ℃.

The solar hot water inlet passage is characterized in that hot water flowing out of the solar hot water inlet assembly 3 is communicated with the valve core assembly 5 through the second functional hole 13 and the gap 14 in sequence;

the hot water inlet passage of the gas water heater is characterized in that hot water flowing out of the water inlet hole 10 of the gas water heater is communicated with the valve core assembly 5 through the communicating groove 20 and the gap 14 in sequence.

Further, the blocking mechanism comprises a blocking shell 18 positioned in the second functional hole 13, a first sealing groove 19, a communicating groove 20 and a second sealing groove 21 are sequentially formed in the shell of the blocking shell 18, the communicating groove 20 is communicated with the water inlet hole 10 of the gas water heater, sealing rings 22 are respectively arranged in the first sealing groove 19 and the second sealing groove 21, the two sealing rings 22 are respectively positioned on two sides of the water inlet hole 10 of the gas water heater, each sealing ring 22 is in sealing butt joint with the inner wall of the second functional hole 13,

one side of the intercepting shell 18 is abutted against a second spring 24, a temperature sensing element 25 which can extend or shorten according to different water temperatures is arranged in the intercepting shell 18 in a penetrating manner, one end of the temperature sensing element 25 is abutted against a first spring 15, a flow dividing pad 26 which can enable water flowing out of the solar hot water inlet assembly 3 to flow to the gap 14 is further sleeved on the temperature sensing element 25, and a limiting block 27 which can be abutted against the flow dividing pad 26 is arranged at one end, far away from the first function hole 12, of the intercepting shell 18;

when cold water flows out of the solar hot water inlet assembly 3, the temperature sensing element 25 is in a natural state, at the moment, the cut-off shell 18 cuts off the communication between the gap 14 and the valve core assembly 5, and the water inlet hole 10 of the gas water heater is communicated with the gap 14 and the valve core assembly 5 through the communication groove 20; when hot water flows out of the solar hot water inlet assembly 3, the temperature sensing element 25 is heated and extends and drives the intercepting shell 18 to move towards the direction far away from the first functional hole 12, at the moment, the solar hot water is conducted with the valve core assembly 5 through the second functional hole 13 and the gap 14 in sequence, and the intercepting shell 18 cuts off the communication between the communication groove 20 and the gap 14.

Further, the temperature sensing element 25 is a conventional one, such as that disclosed in chinese patent No. CN209246207U, and will not be described in detail herein.

The specific working process is as follows:

when hot water flows out of the solar hot water inlet assembly 3, the temperature sensing element 25 is heated to expand internally, and further causes axial extension. Since one end of the temperature sensing element 25 abuts against the first spring 15 and the other end of the temperature sensing element 25 abuts against the intercepting shell 18 through the flow dividing pad 26, one end of the intercepting shell 18 abuts against the second spring 24. As the temperature sensing element 25 is heated and extended, one end of the temperature sensing element applies a force to the first spring 15, and the first spring 15 is compressed by an external force. In addition, because the stiffness coefficient of the first spring 15 is greater than that of the second spring 24, the second spring 24 is more easily compressed than the first spring 15, so that the temperature sensing element 25 drives the flow dividing pad 26 and the intercepting shell 18 to move toward the direction of the second spring 24, at this time, the gap 14 and the valve core assembly 5 are in a conduction state, and hot water flowing out of the solar hot water inlet assembly 3 sequentially passes through the second functional hole 13 and the gap 14 and is conducted with the valve core assembly 5. In this state, the first seal ring 22 and the second seal ring 22 located on the outer wall of the closure shell 18 are in sealing contact with the inner wall of the second functional hole 13. Therefore, hot water flowing out of the water inlet hole 10 of the gas water heater can be blocked by the sealing rings 22 in the first sealing groove 19 and the second sealing groove 21, so that the water inlet hole 10 of the gas water heater can be blocked.

When the temperature of the water flowing out of the solar hot water inlet assembly 3 gradually decreases to normal temperature, the temperature sensing element 25 will gradually decrease to an initial length, which is a fixed natural length of the temperature sensing element 25 in a cold water state, and the process of shortening and recovering is opposite to the process of extending, and will not be described in detail herein.

When the temperature sensing element 25 is restored to a fixed length, the shutoff housing 18 cuts off the communication between the gap 14 and the spool assembly 5 under the driving of the second spring 24. Due to the movement of the closure shell 18, the sealing rings 22 in the first sealing groove 19 and the second sealing groove 21 on the outer rings of the closure shell are driven to move synchronously. When the cut-off shell 18 cuts off the communication between the gap 14 and the valve core assembly 5, the sealing ring 22 in the first sealing groove 19 is separated from the matching with the second functional hole 13 and is spaced from the second functional hole 13 by a certain distance, and at the moment, the water inlet hole 10 of the gas water heater is communicated with the gap 14 through the communication groove 20, so that the water inlet of the gas water heater is completed.

Further, the support member 16 includes a retaining sleeve 28 threadedly coupled to the first functional hole 12, and an end of the retaining sleeve 28 facing the intercepting shell 18 is provided with a sealing surface 29 sealingly engageable with the intercepting shell 18. An adjustable inner core 30 is arranged in the fixing sleeve 28, and the adjustable inner core 30 is in threaded connection with the fixing sleeve 28. An inner hexagonal through hole 31 which can be matched with an inner hexagonal wrench is arranged at one side of the fixed sleeve 28 in a penetrating way, and an adjusting position 32 which can be matched with a screwdriver is arranged at one side of the adjustable inner core 30 facing the inner hexagonal through hole 31. The first spring 15 is located inside the adjustable inner core 30, and one end of the first spring 15 abuts against the inner wall of the adjustable inner core 30.

In actual use, an operator can fit the sleeve 28 to the first functional hole 12 with a socket wrench. And a screwdriver can penetrate through the inner hexagonal through hole 31 to be matched with the adjusting position 32 on the adjustable inner core 30 so as to adjust different depths of the adjustable inner core 30 in the fixing sleeve 28, and further adjust the position of the first spring 15 to change the compression amount of the first spring.

Further, a gasket 17 is arranged between the first spring 15 and the temperature sensing element 25, a clamping groove 33 is formed in an inner wall of one end, away from the adjusting position 32, of the adjustable inner core 30, and a clamping spring 34 used for limiting the gasket 17 is arranged in the clamping groove 33. In addition, because the middle part of jump ring 34 is the fretwork form setting for the one end of temperature-sensing element 25 can pass jump ring 34 and carry out the butt to gasket 17. Through the arrangement of the clamp spring 34, the gasket 17 cannot be ejected out of the adjustable inner core 30 under the elastic force of the first spring 15, but the gasket 17 can compress the first spring 15 inwards under the action of the temperature sensing element 25.

It should be noted that: the temperature sensing element 25 does not apply a force to the pad 17 without thermal elongation, and the pad 17 is restricted to the circlip 34 by the first spring 15.

Further, the adjustable inner core 30 is externally fitted with a first O-ring (not shown in the drawings), one side of which is in sealing abutment with the inner wall of the fixed sleeve 28. The external sleeve of the fixing sleeve 28 is fitted with a second O-ring (not shown in the drawings) having one side in sealing abutment against the internal wall of the first functional hole 12. Through the arrangement of the first O-shaped ring and the second O-shaped ring, the problem of sealing assembly of the end of the first functional hole 12 is solved.

Further, the temperature sensing element 25 includes a telescopic section 35 and a temperature sensing section 36, one end of the telescopic section 35 abuts against the gasket 17, the other end of the telescopic section 35 is integrally connected or assembled with the temperature sensing section 36, and the temperature sensing section 36 is arranged in the direction of solar hot water inlet. The temperature sensing section 36 is integrally provided with a positioning bump 37, the shunt pad 26 is sleeved on the temperature sensing section 36, one side of the shunt pad 26 is abutted against the positioning bump 37, and the other side of the shunt pad 26 is abutted against the limiting block 27.

In the cold water state, the temperature sensing element 25 is at a fixed natural length, and one end of the intercepting shell 18 is pressed by the second spring 24, so that the other end of the intercepting shell 18 is pressed and sealed on the flow sealing surface 29 on the fixed sleeve 28. At this time, the expansion section of the temperature sensing element 25 is close to or just abutted against the gasket 17, but does not generate pressure on the gasket 17. When the temperature rises, the temperature sensing section 36 is heated and expands inside, so that the expansion section extends, one end of the expansion section presses the gasket 17, and the expansion is transmitted to the first spring 15. On the basis of the principle that the force transmissibility and the force and reaction forces thereof are equal, the pressure transmitted by the telescopic section of the temperature-sensitive element 25 to the first spring 15 via the spacer 17 will at the same time result in the positioning cam 37 exerting an equal pressure on the splitter pad 26 and being transmitted via the closure shell 18 to the second spring 24. In addition, since the second spring 24 is compressed before the first spring 15, the temperature sensing element 25 moves toward the second spring 24 with the flow dividing pad 26 and the cut-off housing 18, and at this time, the solar hot water inlet passage (J) is opened, and the cut-off housing 18 cuts off the communication between the communication groove 20 and the gap 14 by the sealing rings in the first and second sealing grooves.

Further, a positioning step 38 for abutting against the closure shell 18 is provided in the second functional hole 13, and the closure shell 18 is movable between the positioning step 38 and the retaining sleeve 28. When the temperature sensing element 25 is heated, the intercepting shell 18 is driven to move towards the second spring 24 until one end of the intercepting shell 18 abuts against the positioning step 38 and stops moving. At this time, the water temperature is close to the upper limit of the water temperature which can be supplied by the solar water heater. If the water temperature still slightly rises to the upper limit of the water temperature which can be supplied by the solar water heater, the expansion section 35 on the temperature sensing element 25 is continuously extended, at this time, the temperature sensing element 25 cannot continuously move towards the second spring 24, and the expansion section 35 reversely presses the gasket 17 to move towards the first spring 15, so as to compress the first spring 15. Therefore, the temperature sensing element 25 and its related parts are not damaged by heat elongation, and when the water temperature is gradually reduced to normal temperature, the temperature sensing element 25 is gradually shortened to the initial fixed length.

Furthermore, a counter bore 39 is arranged at one end of the diversion pad 26 away from the positioning bump 37, a plurality of circumferentially distributed diversion grooves 40 are arranged on the outer ring of the diversion pad 26, and each diversion groove 40 is communicated with the counter bore 39. When solar hot water passes through the diversion pad 26, the solar hot water can enter the interior of the closure shell 18 through the counter bore 39 and the diversion channel 40 in sequence, and then is communicated with the valve core assembly 5 through the gap 14. In addition, water on both sides of the diverter pad 26 can be communicated in both directions through the diverter channel 40 and the counterbore 39.

Furthermore, the valve body 1 is further provided with a third functional hole 41 in the hot runner 7, wherein the third functional hole 41 can be communicated with the solar hot water inlet assembly 3, and the third functional hole 41 is communicated with the second functional hole 13 and coaxially arranged. The second functional hole 13 and the third functional hole 41 are respectively located at two ends of the solar hot water inlet. The partition plate 9 is provided with a connection hole 42 communicating with the third functional hole 41, one end of the connection hole 42 is also communicated with the cold runner 8, and a check valve 43 is provided in the connection hole 42, and the check valve 43 allows fluid to flow from the hot runner 7 into the cold runner 8 and prevents backflow. Specifically, the following are mentioned: the connection hole 42 is embodied as a counterbore close to the third function hole 41, in which the check valve 43 is placed, so that the check valve 43 cannot enter the cold runner 8 through the partition.

The third functional hole 41 is internally threaded with a plug 44 capable of axially communicating and cutting off the second functional hole and the third functional hole, one end of the plug 44 is provided with a hexagonal blind hole 45 as a wrench position, the other end of the plug 44 is provided with a plurality of convex columns 46 which are uniformly distributed along the circumferential direction, a water passing groove 47 is arranged between any two convex columns 46, and the plug 44 is further provided with a groove 48 for assembling an O-shaped ring so as to realize the sealing between the plug 44 and the third functional hole 41 through the O-shaped ring. One end of each boss 46 abuts against the check valve 43 to prevent the check valve 43 from moving in the reverse direction when the water outlet end is pressed, and the check function of the check valve 43 is ensured to exist for a long time.

A cavity 49 for conveying residual cold water of the solar hot water inlet assembly 3 is further arranged in the hot runner 7 in an isolated mode, and one end of the cavity 49 is communicated with the water passing groove 47 on the plug 44. One side of the second functional hole 13 is provided with a yielding hole 50 which can be communicated with the cavity 49 in a penetrating way, and the other end of the cavity 49 can be communicated with the second functional hole 13 through the yielding hole 50. When one end of the closure shell 18 abuts against the positioning step 38 on the second functional hole 13, the outer shell of the closure shell 18 may block the relief hole 50 to cut off communication between the second functional hole 13 and the cavity 49.

When the shower faucet is started to be used, if cold water exists in the pipeline of the solar hot water inlet assembly 3, hot water of a gas water heater is started at first, and meanwhile, the cold water existing in the pipeline of the solar hot water inlet assembly 3 is discharged into the cold runner 8 to be mixed with common tap water. Because warm water is used and hot water and cold water are consumed at the same time, after cold water in a pipeline of the solar hot water inlet assembly 3 is gradually used up, solar hot water enters the faucet to automatically replace hot water supply of the gas water heater, and then enters a normal use state of mixing the solar hot water and common tap water, when the solar hot water is used up for a long time and the temperature is gradually reduced, the cut-off shell 18 blocks the gap 14, namely the water channel J is automatically closed, the water channel M is communicated, and meanwhile, the water inlet of the gas water heater (namely the water channel L) is automatically opened.

In addition, the use process will be described in detail below:

when the water flowing out of the solar hot water inlet assembly 3 is cold water, one end of the intercepting shell 18 abuts against the fixed sleeve 28 at the moment, and the other end of the intercepting shell 18 does not block the abdicating hole 50, so that the cold water flowing out of the solar hot water inlet assembly 3 can only flow into the cavity 49 from the abdicating hole 50 and then sequentially enters the cold runner 8 through the water passing groove 47 and the check valve 43.

When the water flowing out of the solar hot water inlet assembly 3 is hot water, one end of the cut-off casing 18 abuts against the positioning step 38 on the second functional hole 13 at this time, so as to block the abdicating hole 50. The movement mode of the intercepting shell 18 for plugging the abdicating hole 50 is consistent with the water inlet mode of the intercepting shell 18 for plugging the gas water heater, and the operation is finished synchronously. At the moment, the solar hot water inlet passage is communicated.

Further, the intercepting shell 18 is made of a material with a small thermal conductivity coefficient, and has the characteristic of small thermal conductivity, so that the water temperature of the second functional hole 13 on one side isolated by the intercepting shell 18 is not affected by the change of the water temperature of the communicating groove 20 on the other side.

Further, a flow-limiting check valve 51 is arranged at the joint of the cold water inlet assembly 2 and the valve body 1. The flow-limiting check valve 51 may not only allow the water to pass in one direction but not in reverse, but also have a flow-limiting function. The preset maximum flow value for the flow-restricting check valve 51 is less than the preset maximum flow value for the check valve 43 for the same water pressure.

When the tap is used for the first time, the tap handle 6 is opened, and the cold water is simultaneously supplied by the water outlet pipeline of the solar water heater and the common tap water. By setting the maximum flow preset value of the check valve 43 greater than the maximum flow preset value of the flow-limiting check valve 51, the cold water from the outlet conduit of the solar water heater is consumed at a faster rate, and thus the hot water from the solar water heater is used more quickly.

Further, the valve core assembly 5 comprises a cold water inlet hole 52, a hot water inlet hole 53 and a water mixing outlet hole 54, the cold runner 8 is communicated with the cold water inlet hole 52 on the valve core assembly 5, the hot runner 7 is communicated with the hot water inlet hole 53 on the valve core assembly 5, and both the cold water inlet hole 52 and the hot water inlet hole 53 are communicated with the water mixing outlet hole 54. The valve core assembly 5 is conventional and will not be described in detail herein.

For ease of understanding, reference may be made to a waterway as described with reference to fig. 16-19.

A water path J: hot water from the solar water heater flows through the second function hole 13 and the gap 14 and is communicated with the valve core assembly 5.

A water path M: the cold water from the solar water heater flows through the second function hole 13, the abdicating hole 50, the cavity 49, the check valve 43, the cold runner 8 and the valve core component 5.

A water path L: the hot water flowing out from the water inlet hole 10 of the gas water heater is communicated with the valve core component 5 through the communicating groove 20 and the gap 14 in sequence.

A water path K: cold water flowing out of the cold water inlet assembly 2 (namely water coming out of common tap water) is communicated with the valve core assembly 5 through the cold runner 8.

A water path N: and a line from the water mixing water outlet hole 54 on the valve core assembly 5 to the water outlet 4.

Example two:

the difference from the first embodiment is that the structure of the plug is different.

As shown in fig. 15, a cylinder 55 is provided at one end of the plug 44 facing the check valve 43, one end of the cylinder 55 is in contact with the check valve 43, a water passing groove 47 is provided through one side of the cylinder 55, and the cavity 49 is communicated with the check valve 43 through the water passing groove 47.

The specific embodiments are only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a but double-source hot water automatic switch-over tap, includes valve body (1), cold water subassembly (2), solar hot water subassembly (3) and delivery port (4) of intaking, be provided with case subassembly (5) that can be linked together with delivery port (4) on valve body (1), be connected with handle (6), its characterized in that on case subassembly (5): a partition plate (9) capable of dividing the valve inner cavity into a hot runner (7) and a cold runner (8) is arranged in the valve body (1), and a gas water heater water inlet hole (10) capable of being communicated with a gas water heater is formed in one side of the valve body (1);

a first function hole (12) and a second function hole (13) which are coaxially arranged are arranged in the hot runner (7) of the valve body (1), a gap (14) is formed between the first function hole (12) and the second function hole (13), and the second function hole (13) is respectively communicated with the solar hot water inlet assembly (3) and the gas water heater inlet hole (10);

a first spring (15) is arranged in the first functional hole (12), a second spring (24) is arranged in the second functional hole (13), a plugging mechanism capable of performing thermal extension or cold shortening according to different water temperatures is arranged between the first spring (15) and the second spring (24), the stiffness coefficient of the second spring (24) is smaller than that of the first spring (15), a supporting piece (16) capable of abutting against the first spring (15) is arranged at one end, far away from the plugging mechanism, of the first spring (15), and a limiting step (23) capable of abutting against the second spring (24) is arranged at one end, far away from the plugging mechanism, of the second functional hole (13);

the plugging mechanism stretches when meeting hot water to open the gap (14), so that solar water is communicated with the valve core assembly (5) through the second functional hole (13) and the gap (14) in sequence, and the plugging mechanism plugs the water inlet hole (10) of the gas water heater; the blocking mechanism is shortened when meeting cold water to block the gap (14), a passage between the second functional hole (13) and the valve core assembly (5) is cut off, and at the moment, the water inlet hole (10) of the gas water heater is communicated with the gap (14) and the valve core assembly (5).

2. The dual-source hot-water automatically-switchable faucet of claim 1, wherein: the plugging mechanism comprises a closure shell (18) positioned in a second functional hole (13), a first sealing groove (19), a communicating groove (20) and a second sealing groove (21) are sequentially formed in the shell of the closure shell (18), the communicating groove (20) is communicated with a water inlet hole (10) of the gas water heater, sealing rings (22) are respectively arranged in the first sealing groove (19) and the second sealing groove (21), the two sealing rings (22) are respectively positioned on two sides of the water inlet hole (10) of the gas water heater, and each sealing ring (22) is in sealing butt joint with the inner wall of the second functional hole (13),

one side of the intercepting shell (18) is abutted against a second spring (24), a temperature sensing element (25) with the characteristic of extending or shortening according to different water temperatures is arranged in the intercepting shell (18) in a penetrating mode, one end of the temperature sensing element (25) is abutted against a first spring (15), a shunting pad (26) for water flowing out of the solar hot water inlet assembly (3) to flow to the gap (14) is further sleeved on the temperature sensing element (25), and a limiting block (27) capable of abutting against the shunting pad (26) is arranged at one end, far away from the first functional hole (12), of the intercepting shell (18);

when cold water flows out of the solar hot water inlet assembly (3), the temperature sensing element (25) is in a natural state, the cut-off shell (18) cuts off the communication between the gap (14) and the valve core assembly (5), and the gas water heater water inlet hole (10) is communicated with the gap (14) and the valve core assembly (5) through the communicating groove (20); when the solar hot water inlet assembly (3) flows out hot water, the temperature sensing element (25) is heated and extends and drives the intercepting shell (18) to move towards the direction far away from the first functional hole (12), at the moment, the solar hot water is conducted with the valve core assembly (5) sequentially through the second functional hole (13) and the gap (14), and the intercepting shell (18) cuts off the communication between the communication groove (20) and the gap (14).

3. The dual-source hot-water automatically-switchable faucet of claim 2, wherein: support piece (16) including with first function hole (12) threaded connection's fixed cover (28), fixed cover (28) orientation damps the one end of shell (18) and is provided with can with damps shell (18) seal-up flow face (29), fixed cover (28) embeds there is adjustable inner core (30), adjustable inner core (30) and fixed cover (28) threaded connection, first spring (15) are located the inside of adjustable inner core (30), just the one end of first spring (15) and the inner wall looks butt of adjustable inner core (30).

4. The dual-source hot-water automatically-switchable faucet of claim 3, wherein: a gasket (17) is arranged between the first spring (15) and the temperature sensing element (25), a clamping groove (33) is formed in the inner wall of the adjustable inner core (30), and a clamping spring (34) used for limiting the gasket (17) is arranged in the clamping groove (33).

5. The dual-source hot-water automatically-switchable faucet of claim 3, wherein: a positioning step (38) used for abutting against the interception shell (18) is arranged in the second functional hole (13), and the interception shell (18) can move between the positioning step (38) and the fixed sleeve (28).

6. The dual-source hot-water automatically-switchable faucet of claim 5, wherein: one end of the shunting pad (26) is provided with a counter bore (39), a plurality of circumferentially distributed shunting grooves (40) are arranged on the outer ring of the shunting pad (26), and each shunting groove (40) is communicated with the counter bore (39).

7. The dual-source hot-water automatically-switchable faucet of claim 2, wherein: a connecting hole (42) is formed in the partition plate (9), a check valve (43) is arranged in the connecting hole (42), and the check valve (43) allows fluid to flow into the cold runner (8) from the hot runner (7);

still separate in hot runner (7) and be equipped with cavity (49) that are used for carrying solar hot water inlet assembly (3) to remain cold water, the one end and check valve (43) of cavity (49) are linked together, one side of second function hole (13) is run through and is provided with hole of stepping down (50) that can be linked together with cavity (49), cavity (49) accessible hole of stepping down (50) is linked together with second function hole (13), works as when the one end of damming shell (18) is contradicted location step (38) on second function hole (13), but the shell shutoff of damming shell (18) hole of stepping down (50) in order to cut off the intercommunication between second function hole (13) and cavity (49).

8. The dual-source hot-water automatically-switchable faucet of claim 7, wherein: the cold water inlet assembly (2) is provided with a flow-limiting check valve (51) at the joint with the valve body (1), and under the same water pressure, the maximum flow preset value of the flow-limiting check valve (51) is smaller than that of the check valve (43).

9. The dual-source hot-water automatically-switchable faucet of claim 7, wherein: the hot runner type solar water heater is characterized in that a third functional hole (41) is further formed in the hot runner (7) of the valve body (1), the third functional hole (41) is communicated with the second functional hole (13) and is coaxially arranged, the second functional hole (13) and the third functional hole (41) are respectively located at two ends of a solar hot water inlet, a plug (44) capable of axially communicating and cutting off the second functional hole and the third functional hole is connected to the third functional hole in an inner thread mode, one end of the plug (44) is abutted to a check valve (43), a water passing groove (47) is formed in one side of the plug (44), and the cavity (49) is communicated with the check valve (43) through the water passing groove (47).

10. The dual-source hot-water automatically-switchable faucet of claim 4, wherein: if cold water exists in the pipeline of the solar hot water inlet assembly (3), starting hot water of a gas water heater, and discharging the cold water existing in the pipeline of the solar hot water inlet assembly (3) into a cold runner (8) to be mixed with common tap water; after cold water in the pipeline of the solar hot water inlet assembly (3) is gradually used up, solar hot water enters the faucet to automatically replace hot water supply of the gas water heater, and then enters a use state of mixing solar hot water with common tap water, when the solar hot water is used up for a long time, the temperature is gradually reduced, the solar water inlet is gradually and automatically closed, and meanwhile, the gas water heater water inlet is automatically opened.

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