CN111396598A - Double-source hot water faucet capable of automatically switching - Google Patents

Abstract

The invention discloses a double-source hot water automatic switching faucet which 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, a hot runner is arranged in the valve body, 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 gas water heater water inlet hole is communicated with the valve core assembly through the hot runner and forms a gas hot water inlet passage, the solar hot water inlet assembly is communicated with the valve core assembly through the hot runner and forms a solar hot water inlet passage, and the hot runner is internally provided with a temperature sensing blocking piece which can realize the alternative cutting of the gas hot water inlet passage or the. The invention has the following advantages and effects: 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

A dual-source hot water faucet that can be automatically switched

technical field

The invention relates to a faucet, in particular to a dual-source hot water faucet that can be automatically switched.

Background technique

Solar energy is in great demand in my country, has a wide range of applications, and has obvious economic benefits. The promotion of solar water heaters can not only save a lot of fossil energy, but also reduce the current growing environmental pressure. Affected by various aspects such as climate, sunshine, environment, etc., the solar energy received by the surface is very unstable, so it is difficult for the hot water supply of a single solar water heater to meet the water demand of ordinary households.

In order to meet the family's demand for reasonable energy saving without affecting the use, an effective alternative is to install a common water storage type solar water heater as the main, and then install another instant water heater as an auxiliary, but this solution will lead to It may be necessary to switch the water heater at any time during use.

If the hot water in the solar water heater is used up, if it needs to be manually switched to the standby water heater every time, it will be troublesome, and the experience will be poor during the switching time interval. In addition, there is no faucet on the market that can automatically switch between solar water heaters and backup water heaters, so it needs to be improved.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a dual-source hot water faucet that can be automatically switched, which can realize automatic switching of the solar water heater and the standby water heater to provide hot water supply with dual heat sources.

The above technical purpose of the present invention is achieved through the following technical solutions: including a valve body, a cold water inlet assembly, a solar hot water inlet assembly and a water outlet, and the valve body is provided with a valve core that can communicate with the water outlet The valve core assembly is connected with a handle, the valve body has a built-in partition that can divide the inner cavity of the valve into a hot runner and a cold runner, and one side of the valve body is provided with a gas water heater that can communicate with it. The gas water heater inlet hole;

The valve body is provided with a first functional hole and a second functional hole coaxially arranged in the hot runner, there is a gap between the first functional hole and the second functional hole, and the second functional hole is respectively connected with the solar thermal energy. The water inlet component and the water inlet hole of the gas water heater are connected;

The first functional hole has a built-in first spring, the second functional hole has a built-in second spring, and between the first spring and the second spring, a thermal expansion or cold contraction can occur according to different water temperatures. The blocking mechanism, the stiffness coefficient of the second spring is smaller than the stiffness coefficient of the first spring, the end of the first spring away from the blocking mechanism is provided with a support member that can abut against the first spring, the second spring One end of the functional hole away from the blocking mechanism is provided with a limit step that can be abutted against the second spring;

The blocking mechanism stretches when encountering hot water to open the gap, so that the solar hot water is connected to the valve core assembly through the second functional hole and the gap in turn. At this time, the blocking mechanism blocks the water inlet hole of the gas water heater; the The blocking mechanism shortens when encountering cold water to block the gap, and cuts off the passage between the second functional hole and the valve core assembly. At this time, the gas water heater water inlet hole is connected to the gap and the valve core assembly.

The present invention is further provided as follows: the blocking mechanism includes a shut-off casing located in the second functional hole, and the casing of the shut-off casing is provided with a first sealing groove, a communication groove and a second sealing groove in sequence. The groove is communicated with the water inlet hole of the gas water heater, the first sealing groove and the second sealing groove are respectively built with sealing rings, and the two sealing rings are respectively located on both sides of the water inlet hole of the gas water heater. The rings are in sealing contact with the inner wall of the second functional hole,

One side of the shut-off shell is in contact with the second spring, and the inside of the shut-off casing is provided with a temperature sensing element that can be elongated or shortened according to different water temperatures, and one end of the temperature sensing element is connected to the first spring. In contact with each other, the temperature sensing element is also sleeved with a diverter pad for the water flowing out of the solar hot water inlet assembly to flow to the gap, and the end of the cut-off shell away from the first functional hole is provided with a diverter pad that can be connected to the gap. offset limit block;

When the outflow of the solar hot water inlet assembly is cold water, the temperature sensing element is in a natural state. At this time, the shut-off shell cuts off the communication between the gap and the valve core assembly, and the gas water heater inlet hole It is connected with the gap and the valve core assembly through the communication groove; when the hot water from the solar hot water inlet assembly is hot water, the temperature sensing element is heated and elongated and drives the shut-off shell to move away from the first functional hole. At this time, the solar hot water is successively connected to the valve core assembly through the second functional hole and the gap, and the shut-off shell cuts off the communication between the communication groove and the gap.

The present invention is further provided as follows: the support member includes a fixing sleeve that is threadedly connected to the first functional hole, and an end of the fixing sleeve facing the shut-off casing is provided with a flow-sealing surface that can be sealingly matched with the shut-off casing, and the fixing casing An adjustable inner core is built in, the adjustable inner core is threadedly connected with the fixed sleeve, the first spring is located inside the adjustable inner core, and one end of the first spring is in contact with the inner wall of the adjustable inner core.

The present invention is further provided as follows: a gasket is arranged between the first spring and the temperature sensing element, a clamping groove is formed on the inner wall of the end of the adjustable inner core away from the adjustment position, and a clamping groove is arranged in the clamping groove. Circlips that limit the spacers.

According to a further arrangement of the present invention, the second functional hole is provided with a positioning step for resisting the shut-off casing, and the shut-off casing can move between the positioning step and the fixing sleeve.

The present invention is further provided as follows: one end of the flow distribution pad is provided with a counterbore, an outer ring of the flow distribution pad is provided with a plurality of circumferentially distributed flow distribution grooves, and each of the flow distribution grooves is communicated with the counterbore.

The present invention is further provided as follows: a connecting hole is formed on the partition, and a check valve is built in the connecting hole, and the check valve allows fluid to flow from the hot runner to the cold runner;

The hot runner is also separated with a cavity for conveying the residual cold water of the solar hot water inlet assembly, one end of the cavity is connected with the check valve, and one side of the second functional hole is provided with a cavity that can be connected to the cavity. The cavity can be communicated with the second functional hole through the escape hole. When one end of the shut-off shell touches the positioning step on the second functional hole, the outer shell of the shut-off shell can be connected to the second functional hole. The bypass hole is blocked to cut off the communication between the second functional hole and the cavity.

The present invention is further provided as follows: a limited flow check valve is arranged at the connection between the cold water inlet component and the valve body, and under the same water pressure, the maximum flow preset value of the flow limited check valve is smaller than the maximum flow of the check valve. default value.

The present invention is further provided as follows: one side of the fixing sleeve is provided with a hexagonal through hole which can be matched with an inner hexagonal wrench, and the side of the adjustable inner core facing the inner hexagonal through hole is provided with a hexagonal inner hole that can be matched with a screwdriver. Matching adjustment bits.

The present invention is further provided as follows: the valve body is further provided with a third functional hole in the hot runner, the third functional hole is communicated with the second functional hole and is arranged coaxially, the second functional hole and the first functional hole are arranged coaxially. The three functional holes are respectively located at both ends of the solar hot water inlet. The third functional hole is internally threaded with a plug that can cut off the axial communication between the second functional hole and the third functional hole. A check valve is connected, a water passage is provided on one side of the plug, and the cavity is connected to the check valve through the water passage.

In summary, the present invention has the following beneficial effects: by using the principle that the temperature sensing element expands and contracts with temperature, and then adopts a special structure, the automatic switching of the supply source of the faucet between the common water heater and the standby water heater is realized. Function. The faucet described in this application can be applied mainly to solar water heaters, supplemented by other instantaneous water heaters (gas water heaters are used as an example in this application), so as to achieve the product characteristics of reasonable energy saving without affecting the experience effect. The principles of the present invention are not limited to conventional shower faucets, and can be additionally applied to other various faucets, such as basin faucets, kitchen faucets and other water terminals.

Description of drawings

Fig. 1 is the structural representation of the automatic switching faucet of the first embodiment;

Fig. 2 is the structural explosion schematic diagram of Fig. 1;

Fig. 3 is the structural sectional view of Fig. 1;

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

Fig. 5 is the structural sectional view of the valve body in Fig. 2;

Fig. 6 is the structural representation of the fixed sleeve in Fig. 4;

Fig. 7 is the structural sectional view of Fig. 6;

Fig. 8 is the structural representation of the adjustable inner core in Fig. 4;

Fig. 9 is the structural sectional view of Fig. 8;

Fig. 10 is the structural representation of the shut-off shell in Fig. 4;

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

Fig. 12 is the structural schematic diagram of the temperature sensing element in Fig. 4;

Fig. 13 is the structural representation of the shunt pad in Fig. 4;

Fig. 14 is the structural representation of the plug in Fig. 4;

Fig. 15 is another kind of plug structure schematic diagram in the second embodiment;

16 is a schematic diagram of the flow of solar hot water in waterway J;

17 is a schematic diagram of the flow of cold water of waterway M and waterway K;

18 is a schematic diagram of the flow of gas hot water in the water channel L;

FIG. 19 is a schematic diagram of the flow of mixed water in the water channel N. FIG.

Reference signs: 1. Valve body; 2. Cold water inlet assembly; 3. Solar hot water inlet assembly; 4. Water outlet; 5. Valve core assembly; 6. Handle; 7. Hot runner; 8. Cold runner ; 9. Partition plate; 10. Water inlet hole of gas water heater; 11. Temperature sensing plug; 12. First functional hole; 13. Second functional hole; 14. Clearance; 15. First spring; 16. Support piece ; 17, gasket; 18, shut-off shell; 19, first sealing groove; 20, communicating groove; 21, second sealing groove; 22, sealing ring; 23, limit step; 24, second spring; 25, sense Temperature element; 26, shunt pad; 27, limit block; 28, fixed sleeve; 29, sealing surface; 30, adjustable inner core; 31, hexagon socket through hole; 32, adjustment position; 33, card slot; 34 , circlip; 35, telescopic section; 36, temperature sensing section; 37, positioning bump; 38, positioning step; 39, countersunk hole; 40, shunt slot; 41, third function hole; 42, connecting hole; 43, Check valve; 44, plug; 45, hexagon socket blind hole; 46, convex column; 47, water tank; 48, groove; 49, cavity; 50, give way hole; 51, restrictive check valve; 52, cold water inlet hole; 53, hot water inlet hole; 54, mixed water outlet hole; 55, cylinder.

Detailed ways

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

Example 1:

As shown in Figures 1-6, a dual-source hot water faucet that can be automatically switched includes a valve body 1, and the valve body 1 is provided with a cold water inlet assembly 2, a solar hot water inlet assembly 3 and a water outlet 4. The valve The body 1 is also provided with a valve core assembly 5, the cold water inlet assembly 2 and the solar hot water intake assembly 3 are both connected to the valve core assembly 5, and one side of the valve core assembly 5 is also communicated with the water outlet 4, and the valve core assembly A handle 6 is connected to 5 .

The above structures and connection methods are all in the prior art, and will not be described in detail here. For details, please refer to the Chinese Patent Publication No. CN202867920U and the Chinese Patent Publication No. CN109323014A. In order to facilitate understanding, the existing principle is briefly explained as follows: the cold water flowing into the cold water inlet assembly 2 and the water flowing into the solar hot water assembly both flow into the valve core assembly 5, and the valve core assembly 5 flows to the water outlet. 4 outflows. The valve core assembly 5 can be controlled to be communicated with the cold water inlet assembly 2 alone, or with the hot water inlet assembly alone, or with the cold water inlet assembly 2 and the hot water inlet assembly at the same time, so as to control the cold and hot water inlets. The water flow and its mixing ratio can control the water temperature of the water outlet 4. The handle 6 drives the valve core assembly 5 through the front and rear opening and closing angles to realize the function of opening and closing the water, and drives the valve core assembly 5 through the left and right rotation angle to realize the cold and hot mixed water temperature adjustment function.

As shown in FIG. 2 , the valve body 1 has a built-in partition 9 that can divide the inner cavity of the valve 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 that can be communicated with the gas water heater. The gas water heater water inlet hole 10 communicates with the valve core assembly 5 through the hot runner 7 and forms a gas hot water inlet channel. The water inlet assembly 3 communicates with the valve core assembly 5 through the hot runner 7 and forms a solar hot water inlet passage. The cold water inlet assembly 2 communicates with the valve core assembly 5 through the cold flow channel 8 . The hot runner 7 has a built-in temperature-sensing blocking member 11 that can selectively cut off the gas hot water inlet passage or the 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 disposed in the hot runner 7 , and a gap 14 is formed between the first functional hole 12 and the second functional hole 13 . The second functional holes 13 are respectively communicated with the solar hot water water inlet assembly 3 and the gas water heater water inlet hole 10 .

The temperature-sensing blocking member 11 includes a first spring 15 located in the first functional hole 12 , a second spring 24 located in the second functional hole 13 , and a block located between the first spring 15 and the second spring 24 . The sealing mechanism can expand or contract according to the temperature of the water. The stiffness coefficient of the second spring 24 is smaller than the stiffness coefficient of the first spring 15, and the first spring 15 is far away from One end of the blocking mechanism is provided with a support member 16 that can abut against the first spring 15, and one end of the second functional hole 13 away from the blocking mechanism is provided with a limit step 23 that can counteract the second spring 24;

The blocking mechanism stretches when encountering hot water to open the gap 14, so that the solar hot water is connected to the valve core assembly 5 through the second functional hole 13 and the gap 14 in turn. Blocking; the blocking mechanism is shortened in the presence of cold water to block the gap 14, and the passage between the second functional hole 13 and the valve core assembly 5 is cut off. At this time, the gas water heater water inlet hole 10 and the gap 14, the valve core assembly 5 Phase conduction.

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

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

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

Further, the blocking mechanism includes a shut-off casing 18 located in the second functional hole 13, and the casing of the shut-off casing 18 is provided with a first sealing groove 19, a communication groove 20 and a second sealing groove 21 in sequence, so The communication groove 20 is communicated with the water inlet hole 10 of the gas water heater, the first sealing groove 19 and the second sealing groove 21 are respectively built with sealing rings 22, and the two sealing rings 22 are respectively located at the water inlet hole 10 of the gas water heater. Each of the sealing rings 22 is in sealing contact with the inner wall of the second functional hole 13,

One side of the shut-off shell 18 is in contact with the second spring 24, and a temperature-sensing element 25 that can be elongated or shortened according to different water temperatures is drilled inside the shut-off shell 18. One end is in contact with the first spring 15, the temperature sensing element 25 is also sleeved with a diverter pad 26 for the water flowing out of the solar hot water inlet assembly 3 to flow to the gap 14, and the shut-off shell 18 is far away from the first spring 15. One end of the functional hole 12 is provided with a limiting block 27 that can be abutted against the shunt pad 26;

When the outflow of the solar hot water inlet assembly 3 is cold water, the temperature sensing element 25 is in a natural state. The water inlet hole 10 of the gas water heater communicates with the gap 14 and the valve core assembly 5 through the communication groove 20; when the hot water flows out of the solar hot water water inlet assembly 3, the temperature sensing element 25 is heated and elongated and driven The shut-off shell 18 moves away from the first functional hole 12 . At this time, the solar hot water is connected to the valve core assembly 5 through the second functional hole 13 and the gap 14 in turn, and the shut-off casing 18 cuts off the communication groove 20 and the gap 14 connection between.

Further, the temperature sensing element 25 is in the prior art, for example, it has been disclosed in the Chinese Patent Publication No. CN209246207U, which will not be described in detail here.

The specific working process is as follows:

When the hot water flows out of the solar hot water water inlet assembly 3, the temperature sensing element 25 is heated and undergoes internal expansion, thereby causing axial elongation. 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 shut-off casing 18 through the diverter pad 26 , and one end of the shut-off casing 18 abuts against the second spring 24 . As the temperature sensing element 25 is heated and elongated, one end of the temperature sensing element 25 exerts a force on the first spring 15 , and at this time, 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 will drive the shunt pad 26 and the shut-off shell 18 Move toward the direction of the second spring 24, at this time, the gap 14 and the valve core assembly 5 are in a conductive state, and the hot water flowing out of the solar hot water inlet assembly 3 passes through the second functional hole 13, the gap 14 and the valve core assembly in turn. 5-phase conduction. In this state, the first sealing ring 22 and the second sealing ring 22 located on the outer wall of the shut-off casing 18 are in sealing contact with the inner wall of the second functional hole 13 . The hot water flowing out of the water inlet hole 10 of the gas water heater can be blocked by the sealing ring 22 in the first sealing groove 19 and the second sealing groove 21, so as to realize the blocking of the water inlet hole 10 of the gas water heater.

When the temperature of the water flowing out of the solar hot water inlet assembly 3 is gradually reduced to normal temperature, the temperature sensing element 25 will gradually shorten to the initial length, which is the fixed natural length of the temperature sensing element 25 in the cold water state, which shortens the restored length. The process is opposite to the above-mentioned elongation process, and will not be described in detail here.

When the temperature sensing element 25 is restored to a fixed length, the shut-off shell 18 cuts off the communication between the gap 14 and the valve core assembly 5 under the driving of the second spring 24 . Due to the movement of the shut-off casing 18 , the sealing ring 22 located in the first sealing groove 19 and the second sealing groove 21 of the outer ring of the shut-off casing 18 is driven to move synchronously. When the shut-off shell 18 cuts off the communication between the gap 14 and the valve core assembly 5 , the sealing ring 22 located in the first sealing groove 19 is disengaged from the cooperation with the second functional hole 13 , and the sealing ring 22 is separated from the second functional hole 13 . At a certain distance, the water inlet hole 10 of the gas water heater is communicated with the gap 14 through the communication groove 20 to complete the water inlet of the gas water heater.

Further, the support member 16 includes a fixing sleeve 28 threadedly connected with the first functional hole 12 , and one end of the fixing sleeve 28 facing the shut-off casing 18 is provided with a flow-sealing surface 29 that can be sealingly matched with the shut-off casing 18 . The fixed sleeve 28 has a built-in adjustable inner core 30 , and the adjustable inner core 30 is threadedly connected with the fixed sleeve 28 . One side of the fixed sleeve 28 is provided with an inner hexagonal through hole 31 that can be matched with an inner hexagonal wrench, and the side of the adjustable inner core 30 facing the inner hexagonal through hole 31 is provided with an adjustment position 32 that can be matched with a screwdriver. The first spring 15 is located inside the adjustable inner core 30 , and one end of the first spring 15 is in contact with the inner wall of the adjustable inner core 30 .

In actual use, the operator can assemble the fixing sleeve 28 on the first functional hole 12 by using an Allen wrench. And the screwdriver can be passed through the hexagonal through hole 31 and matched with the adjustment position 32 on the adjustable inner core 30 to adjust the different depths of the adjustable inner core 30 in the fixed sleeve 28, and then adjust the position of the first spring 15 to Change its compression.

Further, a gasket 17 is arranged between the first spring 15 and the temperature sensing element 25, and a card slot 33 is formed on the inner wall of one end of the adjustable inner core 30 away from the adjustment position 32. The circlip 34 for the spacer 17 to limit the position. In addition, since the middle portion of the retaining spring 34 is hollow, one end of the temperature sensing element 25 can pass through the retaining spring 34 to abut the gasket 17 . Through the setting of the retaining spring 34 , the gasket 17 cannot be pushed 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 inwardly under the action of the temperature sensing element 25 . .

It should be noted that the temperature sensing element 25 does not exert force on the gasket 17 under the condition of not being heated and elongated, and at this time, the gasket 17 is restricted on the retaining spring 34 under the action of the first spring 15 .

Further, a first O-ring (not shown in the drawings) is sleeved on the outside of the adjustable inner core 30 , and one side of the first O-ring is in sealing contact with the inner wall of the fixing sleeve 28 . A second O-ring (not shown in the drawings) is sleeved outside the fixing sleeve 28 , and one side of the second O-ring is in sealing contact with the inner wall of the first functional hole 12 . Through the arrangement of the first O-ring and the second O-ring, the problem of sealing and assembling 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 is in contact with 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 Set in the direction of the 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 in contact with the positioning bump 37 , and the other side of the flow shunt 26 is connected with the limiting block 27 butted.

In the cold water state, the temperature sensing element 25 is at a fixed natural length. At this time, one end of the shut-off shell 18 is pressed by the second spring 24, so that the other end of the shut-off casing 18 is pressed and sealed against the sealing surface 29 on the fixed sleeve 28. . At this time, the telescopic section of the temperature sensing element 25 is close to or just abuts against the gasket 17 , but does not generate pressure on the gasket 17 . When the water temperature rises, the temperature-sensing section 36 is heated to cause internal expansion, which in turn causes the telescopic section to elongate, so that one end of the telescopic section presses the gasket 17 and transmits it to the first spring 15 . According to the principle of the transmittance of force and the principle that the action force and the reaction force are equal, the pressure transmitted from the telescopic section of the temperature sensing element 25 to the first spring 15 through the washer 17 will simultaneously cause the positioning bump 37 to The diverter pad 26 generates an equal pressure and transmits it to the second spring 24 through the shut-off shell 18 . In addition, since the second spring 24 will be compressed before the first spring 15, the temperature sensing element 25 will move towards the second spring 24 with the diverting pad 26 and the shut-off shell 18, and at this time the solar hot water inlet channel ( J) Conduction, the shut-off casing 18 cuts off the communication between the communication groove 20 and the gap 14 through the first sealing groove and the sealing ring in the second sealing groove.

Further, the second functional hole 13 is provided with a positioning step 38 for resisting the shut-off casing 18 , and the shut-off casing 18 can move between the positioning step 38 and the fixing sleeve 28 . When the temperature sensing element 25 is heated, it drives the shut-off casing 18 to move in the direction of the second spring 24 until one end of the shut-off casing 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 available for the solar water heater. If the water temperature still rises slightly to the upper limit of the water temperature available for the solar water heater, so that the telescopic section 35 on the temperature sensing element 25 continues to stretch, at this time the temperature sensing element 25 cannot continue to move in the direction of the second spring 24, and will reverse The washer 17 is forced to move in the direction of the first spring 15 by the telescopic section 35 , thereby compressing the first spring 15 . This ensures that the temperature sensing element 25 will not be damaged by pressure and its associated accessories during the process of heating and elongation. When the water temperature gradually decreases to normal temperature, the temperature sensing element 25 will gradually shorten to the initial fixed length.

Further, the end of the distribution pad 26 away from the positioning bump 37 is provided with a counterbore 39 , and the outer ring of the distribution pad 26 is provided with a number of circumferentially distributed distribution grooves 40 , each of which is communicated with the counterbore 39 . When the solar hot water passes through the diverter pad 26 , it can enter the interior of the shut-off casing 18 through the countersunk hole 39 and the diverter groove 40 in sequence, and then communicate with the valve core assembly 5 through the gap 14 . In addition, the water located on both sides of the distribution pad 26 can flow through the distribution groove 40 and the counterbore 39 in both directions.

Further, the valve body 1 is also provided with a third functional hole 41 in the hot runner 7 that can be communicated with the solar hot water inlet assembly 3. The third functional hole 41 communicates with the second functional hole 13 and is coaxial. set up. The second functional hole 13 and the third functional hole 41 are respectively located at both ends of the solar hot water inlet. The partition plate 9 is provided with a connecting hole 42 that communicates with the third functional hole 41. One end of the connecting hole 42 is also communicated with the cold runner 8. The connecting hole 42 has a built-in check valve 43. The check valve 43 Allowing fluid to flow from the hot runner 7 into the cold runner 8 has the effect of preventing backflow. It should be noted that the connecting hole 42 is a counterbore close to the third functional hole 41 , and the check valve 43 is placed in the counterbore so that the check valve 43 cannot enter the cold runner 8 through the baffle.

The third functional hole 41 is internally threaded with a plug 44 that can cut off the axial communication between the second functional hole and the third functional hole. One end of the plug 44 is provided with an inner hexagonal blind hole 45 as a wrench position. One end is provided with a plurality of protruding posts 46 evenly distributed along the circumferential direction, a water passage 47 is provided between any two protruding posts 46, and the plug 44 is also provided with a groove 48 for assembling an O-ring to pass the O-ring. A ring is used to achieve the sealing between the plug 44 and the third functional hole 41 . One end of each protruding post 46 abuts against the check valve 43 to prevent reverse movement of the check valve 43 under pressure at the water outlet end, so as to ensure that the check valve 43 has a long-term check function.

The hot runner 7 is also provided with a cavity 49 for conveying the remaining cold water of the solar hot water inlet assembly 3 . One side of the second functional hole 13 is provided with an escape hole 50 that can communicate with the cavity 49 , and the other end of the cavity 49 can communicate with the second functional hole 13 through the escape hole 50 . When one end of the shut-off casing 18 abuts against the positioning step 38 on the second functional hole 13 , the casing of the shut-off casing 18 can block the escape hole 50 to cut off the communication between the second functional hole 13 and the cavity 49 .

When the shower faucet is turned on, if there is cold water in the pipeline of the solar hot water inlet assembly 3, the hot water of the gas water heater will be activated first, and at the same time, the cold water in the pipeline of the solar hot water inlet assembly 3 will be discharged to the cold runner. 8 Mix with ordinary tap water. Because the use of warm water needs to consume both hot water and cold water, after the cold water in the pipeline of the solar hot water inlet component 3 is gradually used up, the hot water from the solar energy will enter the faucet to automatically replace the hot water supply of the gas water heater. In the normal use state of mixing water and ordinary tap water, when the solar hot water is consumed for a long time, the temperature gradually decreases. At this time, the interception shell 18 blocks the gap 14, that is, the waterway J is automatically closed, and the waterway M is connected, and the gas is automatically turned on. The water inlet of the water heater (ie, the connecting water channel L).

In addition, the following will describe the usage process in detail:

When the water flowing out of the solar hot water inlet assembly 3 is cold water, one end of the shut-off shell 18 is in contact with the fixing sleeve 28, and the other end of the shut-off casing 18 does not block the escape hole 50, so the solar hot water is fed into the water. The cold water flowing out of the assembly 3 can only flow into the cavity 49 from the escape hole 50 and enter the cold runner 8 through the water passage 47 and the check valve 43 in sequence.

When the water flowing out of the solar hot water inlet assembly 3 is hot water, one end of the shut-off shell 18 abuts the positioning step 38 on the second functional hole 13 to block the escape hole 50 . The above-mentioned movement mode of blocking the escape hole 50 by the shut-off shell 18 is the same as that of blocking the water inlet of the gas-fired water heater by the shut-off casing 18 , and is completed synchronously. At this time, the solar hot water inlet channel is turned on.

Further, the cut-off shell 18 is made of a material with a small thermal conductivity, which has the characteristics of less heat conduction, so that the water temperature of the second functional hole 13 on one side isolated by the cut-off shell 18 is not affected by the change of the water temperature of the communication groove 20 on the other side. influences.

Further, a limited flow check valve 51 is provided at the connection between the cold water inlet assembly 2 and the valve body 1 . The flow-limiting check valve 51 can not only allow the water flow to pass in one direction and cannot flow back, but also have the function of limiting the flow. Under the same water pressure, the preset maximum flow rate of the limiting check valve 51 is smaller than the preset maximum flow rate of the check valve 43 .

When the faucet is used for the first time, the handle 6 of the faucet is opened, and the cold water at this time is supplied by the water outlet pipe of the solar water heater and the ordinary tap water at the same time. By setting the maximum flow preset value of the check valve 43 to be greater than the maximum flow preset value of the limiting check valve 51, the cold water from the water outlet pipe of the solar water heater can be consumed at a faster rate, and the cold water from the solar water heater can be used more quickly. of hot water.

Further, the valve core assembly 5 includes a cold water inlet hole 52, a hot water inlet hole 53 and a mixed water outlet hole 54, the cold flow channel 8 is communicated with the cold water inlet hole 52 on the valve core assembly 5, and the hot flow channel 7 is communicated with the hot water inlet hole 53 on the valve core assembly 5 , and the cold water inlet hole 52 and the hot water inlet hole 53 are both communicated with the mixed water outlet hole 54 . The valve core assembly 5 is in the prior art and will not be described in detail here.

For ease of understanding, reference can be made to the waterways described in Figures 16-19.

Waterway J: The hot water from the solar water heater flows through the second functional hole 13 and the gap 14 and is connected to the valve core assembly 5 .

Water path M: The cold water from the solar water heater flows through the second functional hole 13 , the escape hole 50 , the cavity 49 , the check valve 43 , and the cold runner 8 and communicates with the valve core assembly 5 .

Water path L: The 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 communication groove 20 and the gap 14 in sequence.

Water path K: the cold water flowing out of the cold water inlet assembly 2 (ie, the water from ordinary tap water) is connected to the valve core assembly 5 through the cold flow channel 8 .

Water path N: the line for the water from the mixing water outlet hole 54 on the valve core assembly 5 to flow to the water outlet 4 .

Embodiment 2:

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

As shown in FIG. 15 , one end of the plug 44 facing the check valve 43 is provided with a cylinder 55 , one end of the cylinder 55 is in contact with the check valve 43 , and one side of the cylinder 55 is provided with a water passage 47 , so The cavity 49 communicates with the check valve 43 through the water passage 47 .

The specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications to the present embodiment without creative contribution as needed after reading this specification, but only in the claims of the present invention are protected by patent law.

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 2, 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.

Images