阅读说明：本技术 排冷水结构 (Cold water discharging structure ) 是由 林泓鑫 于 2021-10-13 设计创作，主要内容包括：本发明提供了排冷水结构,属于淋浴设备技术领域。它解决了现有控制阀中排冷水功能使用不便的问题。本排冷水结构,包括具有进水口和出水口的壳体,所述壳体内设置有感温组件以及弹性件,壳体侧部还具有能与所述进水口相连通的排水孔,所述感温组件在上述弹性件的弹力作用下移动能将所述进水口和出水口之间阻断并使所述进水口和排水孔之间相连通,所述感温组件能在感应到壳体内介质温度升高后克服弹性件的弹力作用移动以使进水口和排水孔之间被阻断并使进水口重新与所述出水口连通。本排冷水结构具有使用方便的优点。(The invention provides a cold water discharging structure, and belongs to the technical field of shower equipment. It has solved the inconvenient problem of row cold water function in the current control valve. The cold water discharging structure comprises a shell with a water inlet and a water outlet, wherein a temperature sensing assembly and an elastic piece are arranged in the shell, a water discharging hole which can be communicated with the water inlet is further formed in the side portion of the shell, the temperature sensing assembly moves under the elastic action of the elastic piece to block the water inlet and the water outlet and enable the water inlet and the water discharging hole to be communicated, and the temperature sensing assembly can overcome the elastic action of the elastic piece to move after sensing the temperature of a medium in the shell to rise so as to enable the water inlet and the water discharging hole to be blocked and enable the water inlet to be communicated with the water outlet again. This row of cold water structure has convenient to use's advantage.)

1. The cold water discharging structure comprises a shell (1) with a water inlet (11) and a water outlet (12), wherein a temperature sensing assembly and an elastic element (4) are arranged in the shell (1), and the cold water discharging structure is characterized in that a drain hole (13) capable of being communicated with the water inlet (11) is further formed in the side portion of the shell (1), the temperature sensing assembly moves under the elastic action of the elastic element (4) to block the space between the water inlet (11) and the water outlet (12) and enable the water inlet (11) and the drain hole (13) to be communicated, and the temperature sensing assembly can overcome the elastic action of the elastic element (4) to move after sensing the temperature of a medium in the shell (1) to be raised so that the space between the water inlet (11) and the drain hole (13) is blocked and the water inlet (11) is communicated with the water outlet (12) again.

2. The structure of claim 1, wherein the outer side of the temperature sensing component is sealed with the inner wall of the housing (1) through a first annular sealing member (6), the housing (1) is further provided with an annular sealing part (7), the drainage hole (13) is arranged between the first annular sealing member (6) and the sealing part (7), and the temperature sensing component can abut against the sealing part (7) after sensing the temperature rise of the medium in the housing (1) so as to block the water inlet (11) and the drainage hole (13).

3. A cold water discharging structure according to claim 1 or 2, wherein the housing (1) is cylindrical, the water inlet (11) and the water outlet (12) are respectively located at two ends of the housing (1), the water discharging hole (13) is obliquely formed relative to the axis of the housing (1), and the water outlet end of the water discharging hole (13) is closer to the water inlet (11) than the water inlet end.

4. The structure of discharging cold water according to claim 2, wherein the temperature sensing assembly comprises a temperature sensing element (2) and a switch member (3) which is cylindrical and is sleeved on the outer side of the temperature sensing element (2), the switch member (3) is fixed with the temperature sensing element (2), the first sealing member (6) is arranged between the outer side of one end of the switch member (3) facing the water outlet (12) and the inner wall of the housing (1), and the other end of the switch member (3) can be driven by the temperature sensing element (2) to approach and abut against the sealing portion (7) to form a seal.

5. A cold water discharging structure according to claim 4, wherein a limiting seat (8) is arranged in the shell (1) and close to the water outlet (12), a water passing hole (9) through which water can flow is formed between the outer side of the limiting seat (8) and the inner wall of the shell (1), and the switch member (3) can be close to the limiting seat (8) under the elastic force of the elastic member (4) and form a seal with the limiting seat (8).

6. A cold water discharge structure according to claim 5, wherein a concave limiting hole (81) is formed on one side of the limiting seat (8) facing the water inlet (11), a rod-shaped expansion part (21) is protruded from the temperature sensing element (2), and the end of the expansion part (21) is abutted against the bottom of the limiting hole (81) under the elastic force of the elastic part (4).

7. The structure of discharging cold water according to claim 4, 5 or 6, wherein the outer side of the temperature sensing element (2) near one end of the water inlet (11) is provided with a convex limit stop shoulder (22), the outer side of the temperature sensing element (2) near one end of the water outlet (12) is connected with a limit ring (10) in a threaded manner, the inner wall of the switch member (3) is provided with a convex ring (31) which is convex and annular, and the convex ring (31) extends between the limit ring (10) and the limit stop shoulder (22).

8. A cold water discharge structure according to claim 4, 5 or 6, wherein said temperature sensing element (2) comprises a paraffin bulb or an SMA bulb.

9. A cold water discharge structure according to claim 4, 5 or 6, wherein said temperature sensing element (2) comprises a body fixed to said housing (1) and a rod-like moving part at one end of the body, the outer end of said moving part abutting against one end of said switch member (3), said elastic member (4) abutting against the other end of said switch member (3).

10. The cold water discharging structure according to claim 1 or 2, wherein a water outlet seat (20) is further fixed in the water outlet (12) of the housing (1), the outer side of the water outlet seat (20) abuts against and seals the inner wall of the housing (1), a water outlet hole (201) is formed in the water outlet seat (20) in a penetrating manner, a convex protrusion (202) is further arranged in the middle of one side of the water outlet seat (20), an annular non-return membrane (30) capable of shielding the water outlet hole (201) is further arranged on the side of the water outlet seat (20), the outer edge of the non-return membrane (30) is fixed to the water outlet seat (20), the inner edge of the non-return membrane (30) abuts against the outer side of the protrusion (202), and the non-return membrane (30) can deform under the hydraulic pressure effect at the water outlet hole (201) and leave the protrusion (202).

11. The cold water discharge structure according to claim 10, wherein a ring-shaped water discharge seat (40) is further fixed in the housing (1), the water discharge seat (40) comprises an inner cylinder (401) and an outer cylinder (402) which are connected into a whole and are both cylindrical, the outer edge of the check diaphragm (30) is tightly pressed between the end of the outer cylinder (402) and the water outlet seat (20), a gap (50) is arranged between the outer side of one end of the outer cylinder (402) far away from the check diaphragm (30) and the inner wall of the housing (1), the gap (50) is communicated with the port of the water outlet (12) of the housing (1), a drain hole (403) communicating the inside of the outer cylinder (402) with the gap (50) is arranged on the side wall of the outer cylinder (402) in a penetrating way, one end of the inner cylinder (401) facing the check diaphragm (30) is closer to the check diaphragm (30) than the drain hole (403), the check diaphragm (30) can deform under the action of water pressure at the water outlet hole (201) to leave the bulge (202) and abut against the end of the inner cylinder (401).

Technical Field

The invention belongs to the technical field of shower equipment, and relates to a cold water discharging structure.

Background

The shower is the most common shower equipment in people's daily life, and along with the continuous improvement of people's standard of living, to the travelling comfort of shower process and convenience demand higher and higher. For example, in winter, although most of users have water heaters in their homes, a large amount of cold water is left in a pipeline from the water heater to a shower, and people often need to drain the water in advance before taking a shower, drain the cold water left in the pipeline, and judge whether the shower is suitable or not by continuously and manually trying the temperature of the discharged water, which is inconvenient to use. And some users may be in the cold water, because of the wrong water route of water outlet choose and lead to cold water to drench on user's body directly, use convenience and travelling comfort are relatively poor.

Therefore, people have designed a control valve and a switching valve device with cold water discharging function, and have applied for Chinese patent, the application number of which is: 201510022883.0, respectively; the bulletin number is: CN 105840908B; the control valve and switching valve device with the cold water discharging function comprises a valve body part, a valve body part and a control valve, wherein the valve body part is provided with a water inlet and a water outlet; the piston can be connected in the valve body part in a sliding mode, and the sliding direction is the X direction; the sliding pipe is connected in the valve body part in a sealing and sliding mode along the X direction; the temperature sensing part can sense the temperature of water flowing through the valve body part to generate deformation, and the temperature sensing part can prop against the piston through the deformation to generate propping force for opening the on-off channel; the handle mechanism is movably connected to the valve body part and is in transmission connection with the sliding pipe so as to be capable of driving the sliding pipe to slide through the handle mechanism. In the control valve and the switching valve device with the cold water discharging function, the temperature sensing part senses the temperature of water flow to control the on-off of water discharging through deformation, and when the cold water is discharged, the water temperature rises, the water discharging is stopped, and a more visual prompt is provided for a user.

However, the control valve and the switching valve device with the cold water discharging function need to be matched with a piston, a sliding pipe, a handle, an eccentric pin, a deep groove, a shallow groove and other structures, so that the whole structure is complex, and when the control valve and the switching valve device are used, the pre-discharged cold water still flows out from an original water outlet, namely when the control valve and the switching valve device are used in a shower, the cold water is discharged from a shower head or a top shower, the possibility of directly wetting a user still exists, and after the cold water is discharged, the user needs to manually operate the handle again to discharge hot water, and the control valve and the switching valve device are not convenient to use.

Disclosure of Invention

The invention aims to provide a cold water discharging structure aiming at the problems in the prior art, and solves the problem that the cold water discharging function in the existing control valve is inconvenient to use.

The purpose of the invention can be realized by the following technical scheme:

the cold water discharging structure comprises a shell with a water inlet and a water outlet, wherein a temperature sensing assembly and an elastic element are arranged in the shell, and the cold water discharging structure is characterized in that a water discharging hole communicated with the water inlet is further formed in the side portion of the shell, the temperature sensing assembly moves under the elastic action of the elastic element to block the space between the water inlet and the water outlet and enable the water inlet and the water discharging hole to be communicated with each other, and the temperature sensing assembly can overcome the elastic action of the elastic element to move after sensing the temperature of a medium in the shell to rise so as to block the space between the water inlet and the water discharging hole and enable the water inlet to be communicated with the water outlet again.

The cold water discharging structure can be applied to water outlet mechanisms such as a handheld shower head and a top shower in shower equipment. When the shower apparatus is not used for a long time, the temperature of the water remaining in the water supply line is gradually lowered. When the shower equipment is restarted for use, cold water in a water supply pipeline can firstly enter the cold water discharging structure through the water inlet, and under the default condition, the temperature in the shell is lower, the temperature sensing assembly keeps a low-temperature contraction state and moves under the elastic action of the elastic piece, so that the water inlet and the water outlet are blocked, the water inlet is only communicated with the water discharging hole, and the cold water entering the shell can be discharged from the water discharging hole; when cold water is drained completely and hot water enters the shell, the temperature of the medium sensed by the temperature sensing assembly rises rapidly, the temperature sensing assembly overcomes the elastic force action of the elastic piece to move, the drain hole is closed, the water outlet is opened, and the hot water can flow out from the water outlet and then is sprayed out through the handheld shower head and the top.

In the working process, under the matching of the temperature sensing assembly and the elastic piece, the waterway switching of the drain hole and the water outlet can be automatically realized according to the change of the temperature of water flowing into the shell, the manual operation is not needed, and the use is more convenient.

The drainage channel provided by the drainage hole arranged on the side part of the shell is independent relative to the water outlet, water can be drained independently, the channels for draining cold water and hot water are separated, when the shower device is actually used, the drained cold water cannot flow out from the handheld shower head or the water outlet panel for top spraying, the condition that the shower device is wetted when being opened can be effectively avoided, meanwhile, when a user sees the handheld shower head or the water sprayed from the top, the water begins to flow out for the hot water, the result is more visual, and the shower device is convenient for the user to use.

In the above cold water discharging structure, a seal is formed between the outer side of the temperature sensing assembly and the inner wall of the shell through a first annular sealing element, an annular sealing part is further arranged in the shell, the drain hole is formed between the first sealing element and the sealing part, and the temperature sensing assembly can abut against the sealing part after sensing the temperature rise of a medium in the shell so as to block the space between the water inlet and the drain hole. The drain hole is formed in the side portion of the shell, and the drain hole is sealed by the sealing piece I and the sealing portion on the two sides, so that the drain hole can be formed to be large enough, quick drainage is facilitated, drainage time is shortened, and the use of a user is facilitated.

In the above cold water discharging structure, the housing is cylindrical, the water inlet and the water outlet are respectively located at two ends of the housing, the drain hole is obliquely formed relative to the axis of the housing, and the water outlet end of the drain hole is closer to the water inlet than the water inlet end. In the process of the practical use of the cold water discharging structure, after the shell is installed, the water inlet is often positioned at the lower part of the shell, the water discharging hole is obliquely arranged towards the water inlet, and the cold water discharging structure is more beneficial to discharging of cold water and connection of a water discharging pipeline.

In the above cold water discharging structure, the temperature sensing assembly includes a temperature sensing element and a switch member that is cylindrical and sleeved on the outer side of the temperature sensing element, the switch member is fixed to the temperature sensing element, the first sealing member is disposed between the outer side of one end of the switch member facing the water outlet and the inner wall of the housing, and the other end of the switch member can be driven by the temperature sensing element to approach and abut against the sealing portion to form a seal. The cylindrical switch piece is arranged, so that the blocking of water flow in the shell can be reduced, and the smoothness and the sealing stability of water passing are ensured.

In the cold water discharging structure, a limiting seat is arranged in the shell and close to the water outlet, a water passing port through which water can flow is formed between the outer side of the limiting seat and the inner wall of the shell, and the switch piece can be close to the limiting seat under the elastic action of the elastic piece and form sealing with the limiting seat. Rely on the sealing member between the sealed cooperation switch spare of switch spare tip and spacing seat and the shells inner wall to realize the shutoff to crossing the mouth of a river, can guarantee equally to cross the mouth of a river and can have enough big water area, guarantee the water yield, avoid the influence to actual water outlet when realizing the switching of row cold water route, made things convenient for user's use.

In the cold water discharging structure, a concave limiting hole is formed in one side, facing the water inlet, of the limiting seat, a protruding rod-shaped telescopic part is arranged on the temperature sensing element, and the end part of the telescopic part abuts against the bottom of the limiting hole under the elastic action of the elastic part.

In the cold water discharging structure, the outer side of the temperature sensing element close to one end of the water inlet is provided with a convex limiting blocking shoulder, the outer side of the temperature sensing element close to one end of the water outlet is in threaded connection with a limiting ring, the inner wall of the switch piece is provided with a convex ring which protrudes in an annular shape, and the convex ring extends into the space between the limiting ring and the limiting blocking shoulder. The limiting ring matched with the limiting blocking shoulder through threaded connection fixes the switch piece, machining errors can be effectively avoided, the stability of fixing the temperature sensing element and the switch piece is guaranteed, meanwhile, the temperature sensing element or the switch piece is convenient to disassemble, maintain and replace, and the application range is wide.

In the above cold water discharging structure, the temperature sensing element includes a paraffin wax temperature sensing bulb or an SMA temperature sensing bulb. The temperature sensing element can select different existing temperature sensing bags according to different actual use places.

As another aspect, in the above cold water discharge structure, the temperature sensing element includes a main body and a rod-shaped moving portion located at one end of the main body, the main body is fixed to the housing, an outer end of the moving portion abuts against one end of the switch, and the elastic member abuts against the other end of the switch. Although the temperature sensing element is arranged outside the switch piece, the volume of the whole structure is increased, the internal pore space can be enlarged, the water passing amount is ensured, and the temperature sensing element can be applied according to different use places.

In foretell cold water structure of row, still be fixed with out the water stand in the delivery port of casing, the outside and the shells inner wall of play water stand support and lean on and seal, it has seted up the apopore to run through on the water stand, one side middle part that goes out water stand water still has convex arch, this side of going out the water stand still is provided with and shelters from the apopore be annular non return diaphragm, the outer edge of non return diaphragm with it is fixed mutually to go out the water stand, the interior edge of non return diaphragm is pasted and is being in the bellied outside, and non return diaphragm can be out of shape and leave under the hydraulic pressure effect of delivery port department the arch. The non-return diaphragm is arranged in the water outlet of the shell and plays a role of anti-backflow, when water in the shell flows towards the direction of the water outlet, the non-return diaphragm is pushed open under the action of water pressure and leaves the bulge, and the water flow can flow out of an inner hole of the annular non-return diaphragm; on the contrary, after the water outlet in the shell is stopped, the non-return membrane is reset under the action of self elasticity and is attached to the outer side of the bulge, the inner hole of the non-return membrane is blocked by the bulge, and the water flow in the direction of the port of the water outlet cannot flow back.

In the cold water discharging structure, an annular water discharging seat is further fixed in the shell and comprises an inner barrel and an outer barrel, the inner barrel is connected into a whole, the inner barrel is cylindrical, the outer edge of the non-return membrane is tightly pressed between the end portion of the outer barrel and the water outlet seat, a gap is formed between the outer side of one end, away from the non-return membrane, of the outer barrel and the inner wall of the shell, the gap is communicated to a port of a water outlet of the shell, a water draining hole communicated with the inside of the outer barrel and the gap is formed in the side wall of the outer barrel in a penetrating mode, one end, facing the non-return membrane, of the inner barrel is closer to the non-return membrane than the water draining hole, and the non-return membrane can deform under the hydraulic pressure effect of the water outlet hole to leave the protrusion and abut against the end portion of the inner barrel. When water normally flows out, the non-return diaphragm deforms under the action of water pressure in the shell and is far away from the bulge, and meanwhile, the non-return diaphragm abuts against the end part of the inner cylinder, so that the flowing water flow directly flows into the inner cylinder and does not flow between the inner cylinder and the outer cylinder; on the contrary, after the water outlet is stopped, the non-return diaphragm resets, residual water in the water using equipment communicated with the water outlet of the shell body can flow back under the action of self gravity, and the water outlet is blocked by the non-return diaphragm, so that water flows to the position between the inner barrel and the outer barrel, flows to the port of the water outlet of the shell body through the water drainage hole, flows out from a gap formed by connecting the shell body and the water using equipment, and the residual water is discharged.

Compared with the prior art, the cold water discharging structure has the following advantages:

1. through the cooperation of the temperature sensing element and the elastic piece, the gating automatic control of the drain hole and the water outlet can be realized, the manual operation is not needed, and the use is more convenient.

2. Set up a wash port in addition alone at the casing lateral part and carry out the drainage for cold water can not follow outlet port department outflow, avoids drenching user's the condition, simultaneously, cold water arranges the back to the greatest extent, and hot water can flow to shower bath from the outlet port, and is more directly perceived to the result of whether hot water goes out water, and it is more convenient to use.

Drawings

Fig. 1 is a schematic sectional view of a first embodiment of the cold water discharge structure.

Fig. 2 is a schematic sectional view of the switch member after moving according to the first embodiment of the cold water discharging structure.

Fig. 3 is a schematic sectional view of a water outlet in the third embodiment of the cold water discharge structure.

In the figure, 1, a housing; 11. a water inlet; 12. a water outlet; 13. a drain hole; 14. a drainage channel; 15. a water passage; 2. a temperature sensing element; 21. a telescopic part; 22. a limiting shoulder; 3. a switch member; 31. a convex ring; 4. an elastic member; 5. a water outlet part; 6. a first sealing element; 7. a sealing part; 8. a limiting seat; 81. a limiting hole; 9. a water outlet; 10. a limiting ring; 101. a second sealing element; 20. a water outlet base; 201. a water outlet hole; 202. a protrusion; 30. a non-return diaphragm; 40. a drain base; 401. an inner barrel; 402. an outer cylinder; 403. a water drain hole; 50. a gap.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1, the cold water discharging structure includes a cylindrical housing 1, two ports of the housing 1 are a water inlet 11 and a water outlet 12, respectively, and a water passage 15 communicating the water inlet 11 with the water outlet 12 is provided in the housing 1. The lateral part of the shell 1 is also provided with a drain hole 13 communicated with the water passing channel 15 in a penetrating way, the drain hole 13 is communicated to the outer side of the shell 1 through a drain channel 14 independent of the water passing channel 15, and the outlet of the drain channel 14 is provided with a water outlet part 5 for connecting a pipeline. In the present embodiment, the drainage hole 13 is formed obliquely with respect to the axis of the housing 1, and the water outlet end of the drainage hole 13 is closer to the water inlet 11 than the water inlet end.

A limiting seat 8 fixed with the shell 1, a temperature sensing element 2 provided with a rod-shaped projecting telescopic part 21, a cylindrical switch part 3 arranged coaxially with the shell 1, an elastic part 4 acting on the switch part 3 and a sealing part 7 are sequentially arranged in the shell 1 from the water outlet 12 to the water inlet 11. The water passage 15 includes a water passage opening 9 formed between the outer side of the limiting seat 8 and the inner wall of the housing 1 for water to flow through. One end of the limiting seat 8 facing the switch piece 3 is provided with a second annular sealing piece 101, and when the switch piece 3 moves towards the water outlet 12 under the action of the elastic force of the elastic piece 4, the end part of the switch piece 3 can abut against the second annular sealing piece 101 and seal between the switch piece 3 and the limiting seat 8. Meanwhile, a first annular sealing element 6 is fixed on the outer side of one end, close to the water outlet 12, of the switch element 3, and the first annular sealing element 6 enables the outer side of the switch element 3 and the inner wall of the shell 1 to form sealing, so that when the switch element 3 abuts against the second sealing element 101 under the elastic action of the elastic element 4, the first sealing element 6 and the second sealing element 101 are sealed, the water passing port 9 of the water passing channel 15 is blocked, and the water inlet 11 cannot be communicated with the water outlet 12. A water gap is arranged between the inner side of the switch member 3 and the temperature sensing element 2 for water flow to flow through.

One side of the limiting seat 8 facing the water inlet 11 is provided with a concave limiting hole 81, the end part of the telescopic part 21 extends into the limiting hole 81, and the end part of the telescopic part 21 is supported against the bottom of the limiting hole 81 under the elastic action of the elastic part 4. Temperature-sensing element 2 wears to establish in switch 3, the outside that temperature-sensing element 2 is close to water inlet 11 one end has the protrusion to be the annular spacing fender shoulder 22 of circle, the outside threaded connection that temperature-sensing element 2 is close to 12 one ends of delivery port has and is annular spacing ring 10, the inner wall of switch 3 has the protrusion to be the annular bulge loop 31 of circle, this bulge loop 31 stretches into between spacing ring 10 and the spacing fender shoulder 22, and thereby can sticis the bulge loop 31 on spacing fender shoulder 22 when the bulge loop 10 advances along the screw thread soon and make switch 3 and temperature-sensing element 2 fixed. When the temperature sensing element 2 senses that the temperature of a medium in the water passing channel 15 rises to a set value, the telescopic part 21 of the temperature sensing element 2 is pushed out, the limiting seat 8 is fixed in the shell 1, the temperature sensing element 2 drives the switch piece 3 to move towards the sealing part 7 until the end part of the switch piece 3 abuts against the sealing part 7 to form sealing, and the drain hole 13 is arranged between the sealing part 7 and the first sealing part 6 at the axial opening position of the shell 1, so that the drain hole 13 can be plugged through the sealing formed by the first sealing part 6 and the sealing part 7 at the moment. In this embodiment, the elastic member 4 is a tower spring, and two ends of the elastic member respectively abut against the housing 1 and the temperature sensing element 2; the temperature sensing element 2 can be a paraffin temperature sensing bulb or an SMA temperature sensing bulb; the sealing part 7 comprises a circular sealing seat fixed with the shell 1 and a circular sealing ring fixed on the sealing seat, and the tower spring is arranged in the sealing seat in a penetrating way.

The cold water discharging structure can be applied to water outlet mechanisms such as handheld shower heads and top shower heads in shower equipment, and can be used as a joint structure to connect the threaded connection structures at the two ends of the shell 1 into a conveying pipeline or the water inlet end of the handheld shower head or the top shower head. And the water outlet part 5 of the drainage channel 14 can be directly connected to floor drain drainage or connected to a cold water pipe for recycling through a pipeline.

When the shower apparatus is not used for a long time, the temperature of the water remaining in the water supply line is gradually lowered. Temperature sensing element 2 senses the temperature reduction in the casing 1, and flexible portion 21 retracts, and sensing element and switch 3 move to delivery port 12 direction under the elastic force effect of elastic component 4, and 3 tip supports and leans on two sealing members 101 of spacing seat 8, will cross water channel 15's water outlet 9 department shutoff, and water inlet 11 and delivery port 12 can't communicate. At this time, because the axial distance between the limiting seat 8 and the sealing part 7 is greater than the axial length of the switch piece 3, the other end of the switch piece 3 is away from the sealing part 7, and the water inlet 11 is communicated with the drain hole 13 through the distance between the limiting seat and the sealing part.

When the shower apparatus is turned on again for use, cold water in the water supply line enters the housing 1 through the water inlet 11 and is discharged through the water discharge hole 13, the water discharge passage 14 and the water discharge portion 5 in this order.

After cold water is drained completely, when hot water in the water heater enters the shell 1, the temperature of a medium sensed by the temperature sensing element 2 rises rapidly, the telescopic part 21 is pushed out to drive the switch piece 3 to move towards the water inlet 11 by overcoming the elastic action of the elastic piece 4, the end part of the switch piece 3 abuts against the sealing part 7 to block the drain hole 13, meanwhile, the end part of the other end of the switch piece 3 leaves the limiting seat 8, the water passing hole 9 is opened, the water passing channel 15 is communicated with the water inlet 11 and the water outlet 12, water drainage is stopped, and the hot water flows out of the water outlet 12 and is sprayed out through the handheld shower head and the top.

Here, although the expansion deformation of the temperature sensing element 2 has a certain travel time, since the temperature difference between the outlet water of the water heater and the temperature of the water remaining in the water pipe is a certain value, when the cold water is exhausted, the temperature of the water is rapidly increased, the deformation time of the temperature sensing element 2 is short, and in actual use, the temperature sensing element 2 with the largest change amount of the comfortable temperature area can be selected to further shorten the time, so that the time in the water path switching process can be ignored. For example, if it is considered that water temperature exceeding 35 degrees can be used as hot water, the temperature sensing element 2 having the largest deformation amount at 35 degrees can be used to sense the water temperature.

Example two

The scheme of this embodiment is substantially the same as that of the first embodiment, except that: the temperature sensing element 2 is inverted and can comprise a main body and a rod-shaped moving part positioned at one end of the main body, the main body and the shell 1 are fixed, and the outer end of the moving part faces the water inlet 11 and is abutted against one end of the switch piece 3. In the solution of this embodiment, although the temperature sensing element 2 is disposed outside the switch element 3, the volume of the whole structure is increased, but the internal pore space can be increased, the water passing amount is ensured, and the temperature sensing element can be specifically applied according to different use places.

EXAMPLE III

As shown in fig. 3, the solution of the present embodiment is substantially the same as the first embodiment, except that: the axial length of the water outlet 12 of the shell 1 is longer, a water outlet seat 20 and an annular water drainage seat 40 are further fixed in the water outlet 12 of the shell 1, and the water drainage seat 40 is closer to the port of the water outlet 12 of the shell 1 than the water outlet seat 20. The outer side of the water outlet seat 20 is abutted against and sealed with the inner wall of the shell 1, the water outlet seat 20 is provided with a plurality of water outlet holes 201 in a penetrating manner, the middle part of one side of the water outlet seat 20 close to the water drainage seat 40 is also provided with a convex bulge 202, the outer side surface of the bulge 202 is a curved surface, an annular check membrane 30 is further arranged between the water outlet seat 20 and the water drainage seat 40 and can shield all the water outlet holes 201, the outer edge of the check membrane 30 is tightly pressed between the water outlet seat 20 and the water drainage seat 40, and the inner edge of the check membrane 30 is abutted against the outer side of the bulge 202 to form sealing. The drainage seat 40 comprises an inner cylinder 401 and an outer cylinder 402, wherein the inner cylinder 401 and the outer cylinder 402 are connected into a whole and are in a cylindrical shape, the outer edge of the non-return diaphragm 30 is tightly pressed between the end part of the outer cylinder 402 and the water outlet seat 20, a gap 50 is formed between the outer side of one end, far away from the non-return diaphragm 30, of the outer cylinder 402 and the inner wall of the shell 1, the gap 50 is communicated with a port of the water outlet 12 of the shell 1, and a drainage hole 403 for communicating the inside of the outer cylinder 402 and the gap 50 is formed in the side wall of the outer cylinder 402 in a penetrating mode. The end of the inner barrel 401 facing the check diaphragm 30 is closer to the check diaphragm 30 than the bleed opening 403 and the check diaphragm 30 can deform under the water pressure at the outlet opening 201 to move away from the protrusion 202 and abut against the end of the inner barrel 401.

When water normally flows out, the check diaphragm 30 deforms under the action of the water pressure in the housing 1 and is far away from the protrusion 202, and abuts against the end of the inner cylinder 401, so that the flowing water directly flows into the inner cylinder 401 and does not flow between the inner cylinder 401 and the outer cylinder 402; on the contrary, after the water outlet is stopped, the non-return membrane 30 is reset, the water remained in the water consumption equipment communicated with the water outlet 12 of the shell 1 can flow back under the action of self gravity, and as the water outlet hole 201 is blocked by the non-return membrane 30, the water flow can flow between the inner cylinder 401 and the outer cylinder 402, flow to the port of the water outlet 12 of the shell 1 through the water drainage hole 403, and flow out from the gap between the shell 1 and the water consumption equipment, so that the function of discharging the remained water is realized.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.