WO2016173334A1

WO2016173334A1 - Separation system for recycling cold water

Info

Publication number: WO2016173334A1
Application number: PCT/CN2016/076815
Authority: WO
Inventors: 张良寅
Original assignee: 张良寅
Priority date: 2015-04-27
Filing date: 2016-03-18
Publication date: 2016-11-03
Also published as: CN107636368A; CN107636368B; WO2016173333A1

Abstract

A separation system for recycling cold water and a separation valve. The separation valve comprises a valve body, left and right ends being sealed by means of end covers. A water passing channel (19) is provided in the middle of the valve body. The left and right ends of the valve body are a separation cavity (16) communicated with a hot water inlet pipe and a backflow cavity (21) communicated with a cold water inlet pipe, respectively. A hot water cavity communicated with a hot water outlet (9) is provided on the left side of the separation cavity (16). A hollow piston (15) is disposed in the separation cavity (16), a water passing hole being provided in the side wall of the piston (15). The left end of the piston (15) is provided with a piston end cover (6) with a water passing hole (5). A temperature sensing element (2) is mounted in a hollow body of the piston (15). A sealing disc (3) is mounted on the temperature sensing element (2). The sealing disc (3) axially seals the water passing hole (5) of the piston end cover (6) by means of a supporting spring (17) mounted at the right end of the temperature sensing element (2). A one-way valve (1) is disposed between the backflow cavity (21) and the water passing channel (19). The temperature sensing element (2) does not drive the piston (15) to slide, a backflow channel of cold water cannot be mistakenly opened so as not to cause that a cycle cannot stop, and the piston (15) will not move back and forth in the separation cavity (16) so as not to generate vibration and noise.

Description

Shunt system for recycling cold water

Technical field

The invention relates to a pipe valve system, in particular to a shunt system for recycling cold water to a water supply line of a water heater, and to a diverter valve for recovering cold water.

Background technique

In the prior art hot water supply system, there is often a case where the water point is far from the hot water supply point. Since the water supply pipe has a certain length, when using the hot water, a certain amount of remaining cold water is required to be supplied each time. Hot water is produced, causing waste of water resources.

In response to the above problem, CN201520261006.4 discloses a shunting structure for recovering cold water, which can avoid waste caused by discharging cold water by establishing a cold water circulation loop in which cold water is connected to the water inlet end of the water heater. However, this patented product often has a major failure. After the water is hot, the circulation cannot be stopped. The hot water will flow through the cold water pipe through the circulation pipeline. The cold water pipe also becomes a hot water pipe, which not only wastes energy, but also fails. Adjust the water temperature of the faucet. This is because the ejector pin is placed on the end cap of the valve body at the left end. When the piston moves left and right, the gap between the sealing disc and the piston end cap is changed. When the water is hot, the ejector rod of the temperature sensing element protrudes, and the sealing disc and the piston The end cover creates a gap, the piston moves to the right while the clearance is also reduced, the water flow in the gap between the sealing disc and the piston end cover is always smaller than the flow rate of the water outlet hole, the left chamber pressure of the piston is smaller than the right chamber pressure, and the spring cannot overcome the pressure difference, so that the piston cannot be Close the return channel of the cold water so that the cycle cannot be stopped. Vibration and noise are generated as the piston moves back and forth in the splitter chamber.

Summary of the invention

In order to overcome the deficiencies of the above techniques, the object of the present invention is to provide a reliable operation. A high-flow diverting system for recovering cold water and a diverter valve for recovering cold water. When the temperature sensing element is operated, the gap of the water-passing hole on the end cap of the piston is not changed by the movement of the piston, and the cold water is returned. The rear piston can effectively block the return passage.

One of the technical solutions adopted for achieving the object of the present invention is: a flow dividing system for recovering cold water, comprising a diverter valve and a circulation pump, the diverter valve comprising a valve body sealed by left and right ends of the end cap, the valve The middle section of the body is a water passage, and the left and right ends of the water passage are respectively a diversion chamber communicating with the hot water inlet pipe, and a return chamber communicating with the cold water inlet pipe, and a heat connected to the hot water outlet is disposed on the left side of the diversion chamber. a water chamber; a hollow piston with a water passage hole in the side wall is disposed in the split chamber; a left end end of the piston has a piston end cover with a water hole, and a temperature sensing element is installed in the hollow body of the piston, and the temperature sensing element is A sealing disc is mounted thereon, and the sealing disc is axially blocked by a spring supported by a right end of the temperature sensing element; a check valve is arranged between the return chamber and the water passage; When the water passage and the mixing chamber are connected, the one-way valve is connected to the return chamber, and the circulation pump is installed in the cold water inlet pipe that communicates with the water inlet end of the water heater, so that the split chamber-water passage-return chamber-cold water inlet water The pipeline constitutes the return channel of cold water The utility model is characterized in that: the left end of the piston end cover of the piston is screwed with the right end of the temperature regulating bolt, and the other end of the temperature regulating bolt is connected with a bolt sleeve mounted on the left end cover of the valve body, and the temperature sensing element ejector is heated and extended. The top is placed on the temperature regulating bolt, and the temperature sensing element is moved to the right of the sealing plate to open the water passage hole of the piston end cover, and the top spring installed in the bolt sleeve is pushed to the right side of the piston by the bolt when the pressure is balanced in the left and right chambers of the piston. Block the water passage.

In the above technical solution, the shunt system for recovering cold water further includes a water heater. The water heater is a rapid heat or a heat storage type water heater.

As a technical solution, the present invention also relates to a diverter valve for recovering cold water, The diverter valve comprises a valve body sealed by left and right ends of the end cover, a middle section of the valve body is a water passage, and left and right ends of the water passage are respectively a diversion chamber communicating with the hot water inlet pipe, and are connected with the cold water inlet pipe a recirculation chamber, a hot water chamber connected to the hot water outlet is disposed on the left side of the diversion chamber; a hollow piston with a water passage hole through the side wall is disposed in the diversion chamber, and the left end of the piston has a water passage hole The piston end cover is provided with a temperature sensing element in the hollow body of the piston, and the temperature sensing element is mounted with a sealing disk, and the sealing disk is axially inserted into the water passage hole of the piston end cover by the action of the spring mounted on the right end of the temperature sensing element. Blocking; a check valve is arranged between the return chamber and the water passage, and when the water passage and the mixing chamber are connected, the check valve is electrically connected to the return chamber; and the piston end cap of the piston is left The threaded bolt is connected to the right end of the temperature regulating bolt, and the other end of the temperature regulating bolt is connected with a bolt sleeve mounted on the left end cover of the valve body. When the temperature sensing element rod is extended by heat, it is placed on the temperature regulating bolt to make the temperature sensing element Opening the sealing disc to the right and opening the piston end cap Water holes, bolt by a spring mounted on the top of sleeve piston is pushed by the bolt blocking the right over the water passage around the piston chamber pressure equalization.

Further, in the above-described splitting system for recovering cold water or a diverter valve for recovering cold water, the return chamber is in communication with a cold water outlet; the hot water outlet and the cold water outlet are connected to a mixing valve, or they are respectively associated with a hot water valve Connected to the cold water valve.

Further, the left end of the temperature regulating bolt sleeve is connected with a temperature adjustment knob, and the temperature adjustment knob is rotated counterclockwise or clockwise to change the stroke of the left rod when the plunger is heated and extended.

Further, the piston divides the splitting chamber into a left chamber and a right chamber, wherein the piston end cover is at a maximum diameter of the piston, and a gap is formed between the outer side wall and the inner wall of the splitting chamber; the left chamber and the hot water chamber Connected, the right chamber communicates with the water inlet pipe, and the left and right chambers communicate through the gap, or through the water passing hole II of the piston side wall and the water passing hole I on the piston end cover.

The advantages and benefits of the present invention are as follows:

1. When the hot water outlet leaks, due to the gap between the piston and the splitting chamber, the water flow can be quickly moved from the water inlet into the splitting chamber and the hot water chamber to maintain a new pressure balance. It can avoid the misjudgment of the piston under such circumstances and unexpectedly start the diverting work.

2. When the hot water tap is turned on, the pressure change generated by the cold water flowing out from the hot water outlet can be turned on to turn on the circulating water pump or the booster pump working switch, so that the water flows into the water inlet pipe 14. At the same time, due to the decrease of the pressure of the left chamber, the piston can be quickly moved to the left, the left chamber disappears, and the piston blocks the hot water chamber, so that the remaining cold water in the hot water outlet pipe can be returned to the cold water inlet pipe.

3. Since the one-way valve 1 is disposed before the water passing pipe 19 and the returning chamber, when hot water is used, the cold water does not flow back through the water pipe 19 into the splitting chamber.

4. By means of the arrangement of the springs 17, the temperature sensing element can be supported such that the sealing disk blocks the water passing hole I 5 of the piston end cover 6, and since the ejector rod of the temperature sensing element expands and contracts in a constant space, it only changes the sealing The gap between the disc 3 and the piston end cover 6 through the water hole I 5 does not drive the piston to slide in the diverting chamber, and the balance of the left and right chambers cannot be established due to frequent movement of the piston, and the return passage cannot be blocked, so that the circulation cannot be stopped. In this case, the piston will not move back and forth in the splitting chamber to generate vibration and noise.

5. The piston movement is not directly affected by the operation of the temperature sensing element, and is only affected by the pressure change of the left and right chambers in the splitting chamber, and the reliability is high. There are three types: 1. The temperature sensing element does not work, and the pressure balance of the left and right chambers is ensured by the gap between the piston and the inner wall of the splitting chamber. Under the action of the top spring 12, the piston is moved to the right to block the return passage. 2. The pressure in the right chamber is greater than the left chamber and overcomes When the top spring resistance, the piston moves left to block the inlet of the hot water chamber. 3. The temperature sensing element works, remove the sealing disk, so that the water hole II of the piston side wall and the water hole I on the piston end cover communicate with the left chamber, and the pressure balance of the left and right chambers is re-established, in the top spring 12 Under the action of the piston, the piston is moved to the right to block the return channel.

6. The distance that the ejector rod 4 of the temperature sensing element moves to the temperature regulating bolt can be adjusted according to needs. When the water temperature is high, the distance is adjusted to be larger, and the distance can be adjusted smaller when the outlet water temperature is lower.

DRAWINGS

The above structure of the present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

The present invention gives the following figures:

Figure 1 is a schematic diagram of the structure of an embodiment of the system of the present invention

2 to 4 are structural cross-sectional views showing three operating states of the diverter valve of the present invention.

In the drawings: A, water heater; B, circulation pump; C, diverter valve; D, mixing valve; a, left chamber; b, right chamber; 1 check valve; 2, temperature sensing element; 4, ejector; 5, water hole I; 6, piston end cover; 7, temperature adjustment bolt; 8, water hole III; 9, hot water outlet; 10, left end cover; 11, temperature adjustment bolt sleeve; 12, top spring; 13, cold water outlet; 14, water inlet channel; 15, piston; 16 split cavity; 17 support spring; 18, water hole II; 19, water passage; 20 cold water inlet pipe; Cavity; 22, thermostat knob; 23, hot water chamber; 24, valve body.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings:

As shown in FIG. 1, the shunting system for recovering cold water of the present invention includes a water heater A, a diverter valve C, and a circulation pump B. Further, the hot and cold water outlet end of the diverter valve is connected to the mixing valve D, or the hot water valve and the cold water valve are respectively connected.

Referring to Figures 2-4, the diverter valve includes a valve body sealed by left and right ends of the end cap, the middle portion of the valve body is a water passage 19, and the left and right ends of the water passage are respectively a diversion chamber communicating with the hot water inlet pipe. 16 and a recirculation chamber 21 communicating with the cold water inlet pipe, a hot water chamber communicating with the hot water outlet 9 is disposed on the left side of the diversion chamber; and a hollow piston having a side wall with a water hole is disposed in the diversion chamber 15. The left end of the piston has a piston end cover 6 with a water hole 5, and a temperature sensing element 2 is mounted in the hollow body of the piston, and a sealing disk 3 is mounted on the temperature sensing element, and the sealing disk is mounted on the right end of the temperature sensing element. The action of the spring 17 axially blocks the water passage hole of the piston end cover; a check valve 1 is disposed between the return air chamber and the water passage 19, and when the water passage 19 is electrically connected to the mixing chamber, the one-way valve The valve 1 is electrically connected to the return chamber, and the circulation pump is installed in the cold water inlet pipe communicating with the water inlet end of the water heater, so that the splitting chamber 16 - the water passage 19 - the return chamber 21 - the cold water inlet pipe 20 constitute a return passage of cold water; The utility model is characterized in that: the left end of the piston end cover 6 of the piston 15 is screwed to the right end of the temperature regulating bolt 7 The other end of the temperature regulating bolt 7 is connected with a bolt sleeve 11 mounted on the left end cover 10 of the valve body, and the temperature sensing element top rod (4) is placed on the temperature regulating bolt when the heat is extended by the heat to seal the temperature sensing element. The disk is moved to the right to open the water hole of the piston end cover, and the top spring 12 installed in the bolt sleeve 11 is pushed by the bolt 7 to press the water passage 19 to the right when the pressure is balanced by the left and right chambers of the piston 15.

Further, in the above-described splitting system and the diverter valve, the return chamber 21 is in communication with the cold water outlet.

The left end of the temperature regulating bolt sleeve 11 is connected to the temperature adjustment knob 22, and the nut is rotated counterclockwise or clockwise to change the stroke of the left rod 4 when it is extended by the heat.

Further, the piston 15 divides the splitting chamber into a left chamber and a right chamber, the piston end cover 6 is at the maximum diameter of the piston, and a gap is formed between the outer side wall and the inner wall of the splitting chamber; the left chamber and the heat The water chamber is connected, the right chamber is connected to the water inlet pipe, and the left and right chambers are connected through the gap, or through the water hole II 18 of the piston side wall and the water passing hole I 5 on the piston end cover.

The working process of the present invention is as follows:

1. In the unworked state, the water in the pipeline and the valve body is kept at room temperature, and the temperature sensing element is in the original cold contraction state. At this time, the pressures of the left chamber a and the right chamber b in the split chamber are the same due to the gap communication. Under the action of the spring 17, the temperature sensing element 2 passes the water hole I 5 on the piston end cover through the sealing disk 3. The plug; the piston blocks the water passage 19 by the action of the top spring 12 (see Fig. 2).

2. When the hot water tap is turned on, the remaining cold water in the left chamber and the hot water chamber located in the split chamber rapidly flows out. The change in pressure caused by the remaining cold water flowing out of the hot water outlet 9 in the pipeline is sufficient to activate the circulation pump or the booster pump operating switch. Due to the release of the left chamber pressure, the cylinder is quickly moved to the left and the left chamber a disappears. The piston blocks the inlet of the hot water chamber 23 and opens the water passage 19 of the return passage, so that the retained cold water entering the water inlet conduit 14 and the split chamber 16 can pass through the water passage 19 - the check valve 1 - the return chamber 21 and the cold water inlet The pipe 20 will flow into the water heater for heating (see Figure 3).

3. When the water flowing from the water inlet pipe 14 into the splitting chamber 16 is hot water, the temperature sensing element undergoes thermal expansion deformation due to the change of the water temperature, and the ejector rod of the temperature sensing element protrudes, since the ejector rod is The top of the piston end cover, the gap between the sealing disc integrated with the temperature sensing element and the water passage hole I 5 of the piston end cover does not change with the sliding of the piston, and the flow of water flowing through the gap is greater than the flow of water. The water flow rate of the hole III 8 is at this time, the pressure balance of the left chamber and the right chamber of the splitting chamber 16 is re-established, the pressure of the front and rear chambers is rebalanced, and the piston closes the water passage 19 under the action of the top spring 12, and the hot water passes. The water passage hole of the piston side wall 18 - the water passage hole I - 5 - the left chamber - the hot water chamber on the piston end cover flows out from the hot water outlet 9 (see Fig. 4).

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

A splitting system for recovering cold water, comprising a diverter valve (C) and a circulation pump (B), the diverter valve comprising a valve body (24) sealed by left and right ends of the end cap, a middle section of the valve body (24) For the water passage (19), the left and right ends of the water passage are respectively a split chamber (16) communicating with the hot water inlet pipe, and a return chamber (21) communicating with the cold water inlet pipe, and being disposed on the left side of the split chamber a hot water chamber (23) connected to the hot water outlet (9); a hollow piston (15) with a side wall with a water hole II (18) is disposed in the split chamber, and the left end of the piston has a water passing through a piston end cover (6) of the hole I (5) is mounted with a temperature sensing element (2) in the hollow body of the piston, and a sealing disk (3) is mounted on the temperature sensing element, and the sealing disk is mounted on the right end of the temperature sensing element. The spring (17) acts to axially block the water passage I (5) of the piston end cover; a check valve (1) is provided between the return chamber and the water passage (19), when the water passage ( 19) When the mixing chamber is turned on, the one-way valve (1) is connected to the return chamber, and the circulation pump is installed in the cold water inlet pipe that communicates with the water inlet end of the water heater, so that the splitting chamber (16)-water passage (19) -Return chamber (21) - cold water inlet pipe ( 20) a return passage constituting cold water; characterized in that: the left end of the piston end cover (6) of the piston (15) is screwed to the right end of the temperature regulating bolt (7), and the other end of the temperature regulating bolt (7) is mounted on The bolt sleeve (11) on the left end cover (10) of the valve body is connected by a key, and the temperature sensing element ejector (4) is placed on the temperature regulating bolt when the heat is extended, so that the temperature sensing element is moved to the right with the sealing disk to open the piston end. The water hole of the cover is closed by the top spring (12) installed in the bolt sleeve (11) through the bolt (7) when the pressure is balanced in the left and right chambers of the piston (15), and the piston is blocked by the right passage (19).
A diverter valve for recovering cold water, the diverter valve comprising a valve body sealed by left and right ends of the end cap, a middle section of the valve body being a water passage (19), and left and right ends of the water passage a diversion chamber (16) communicating with the hot water inlet pipe and a return chamber (21) communicating with the cold water inlet pipe, and a hot water chamber communicating with the hot water outlet (9) on the left side of the diversion chamber; The splitting chamber is provided with a hollow piston (15) with a side wall with a water hole II. The left end of the piston has a piston end cover (6) with a water passing hole I(5), and a feeling is installed in the hollow body of the piston. a temperature element (2) is mounted on the temperature sensing element with a sealing disc (3), and the sealing disc axially blocks the water passage hole of the piston end cover by the action of the spring (17) installed at the right end of the temperature sensing element; A check valve (1) is disposed between the return chamber and the water passage (19). When the water passage (19) is electrically connected to the mixing chamber, the check valve (1) is electrically connected to the return chamber; The left end of the piston end cover (6) of the piston (15) is screwed to the right end of the temperature regulating bolt (7), and the other end of the temperature regulating bolt (7) and the bolt sleeve mounted on the left end cover (10) of the valve body (11) Key connection, the temperature sensing element ejector (4) is placed on the temperature regulating bolt when the heat is extended, so that the temperature sensing element is moved to the right side of the piston end cover by the sealing plate, and is installed by the bolt. Set of tops in (11) The spring (12) pushes the piston to block the water passage (19) by the bolt (7) when the pressure is balanced by the left and right chambers of the piston (15).
The split system for recovering cold water according to claim 1, characterized in that the shunt system for recovering cold water further comprises a water heater (A), which is a rapid heat or a heat storage type water heater.
A splitting system for recovering cold water according to claim 1, wherein said return chamber (21) is in communication with a cold water outlet (13); said hot water chamber (23) passes through a water passage III (8) It is connected to the hot water outlet (9); the hot water outlet (9) and the cold water outlet (13) are connected to the mixing valve (D), or they are respectively connected to the hot water valve and the cold water valve.
A splitting system for recovering cold water according to claim 1, wherein: The left end of the temperature regulating bolt sleeve (11) is connected to the temperature adjustment knob (22), and the temperature adjustment knob is rotated counterclockwise or clockwise to change the stroke of the left rod (7) when it is extended by the heat.
A splitting system for recovering cold water according to claim 1, wherein the piston (15) divides the splitting chamber into a left chamber and a right chamber, the piston end cap (6) being the largest piston At the diameter, there is a certain gap between the outer side wall and the inner wall of the splitting chamber; the left chamber is in communication with the hot water chamber, the right chamber is in communication with the water inlet duct, the left and right chambers are connected through the gap, or the water passing through the side wall of the piston The hole II (18) and the water passing hole I (5) on the piston end cover are connected.
A diverter valve for recovering cold water according to claim 2, wherein said return chamber (21) is in communication with a cold water outlet (13); said hot water chamber (23) passes through a water passage III (8) Connected to the hot water outlet (9).
A diverter valve for recovering cold water according to claim 2, wherein the left end of the temperature regulating bolt sleeve (11) is connected to the temperature adjustment knob (22), and the temperature adjustment knob is rotated counterclockwise or clockwise. , changing the stroke of the ejector (4) to the left when heated.
A diverter valve for recovering cold water according to claim 2, wherein the piston (15) divides the diverting chamber into a left chamber and a right chamber, and the piston end cap (6) is the largest of the piston At the diameter, there is a certain gap between the outer side wall and the inner wall of the splitting chamber; the left chamber is in communication with the hot water chamber, the right chamber is in communication with the water inlet duct, the left and right chambers are connected through the gap, or the water passing through the side wall of the piston The hole II (18) and the water passing hole I (5) on the piston end cover are connected.