CN115479296A - Water supply device and gas water heating equipment - Google Patents

Abstract

The invention provides a water supply device and a gas water heating device, wherein the water supply device comprises: a water heating unit having a water inlet end and a water outlet end; an ozone supply unit for making the water output by the water supply device contain ozone; a circulation control mechanism cooperating with the ozone supply unit, the circulation control mechanism being configured to cause a portion of the ozone-containing water flowing out of the ozone supply unit to flow into the ozone supply unit again. The water supply device and the gas water heating equipment of the invention recycle part of water containing ozone generated by the ozone supply unit in the ozone supply unit through the circulation control mechanism so as to achieve the purpose of improving the concentration of ozone in the water containing ozone.

Description

Water supply device and gas water heating equipment

Technical Field

The invention relates to the technical field of water heaters, in particular to a water supply device and gas water heating equipment.

Background

Along with the improvement of living standard of people, people pay more and more attention to the health washing function of water equipment. Because ozone has strong oxidizability, the ozone has obvious effects on the aspects of degerming, disinfection, pesticide residue removal and the like. Therefore, the integration of ozone sterilization function into hot water supply devices is one of the new trends in the future.

Therefore, the invention provides a water supply device provided with an ozone generator and a gas water heating device.

Disclosure of Invention

The invention aims to provide a water supply device to improve the concentration of ozone in outlet water of the water supply device.

The invention also aims to provide the gas water heating equipment which has the functions of water heating and sterilization, has no single function any more, has strong adaptability and can be suitable for the water use conditions of the gas water heating equipment in different working modes.

The above object of the present invention can be achieved by the following technical solutions:

the present invention provides a water supply device, comprising:

a water heating unit having a water inlet end and a water outlet end;

an ozone supply unit for making the water output by the water supply device contain ozone;

a circulation control mechanism cooperating with the ozone supply unit, the circulation control mechanism being configured to cause a portion of the ozone-containing water that exits the ozone supply unit to again flow into the ozone supply unit.

In an embodiment of the present invention, a bypass branch capable of communicating with the water inlet end and the water outlet end is included, the bypass branch is connected in parallel with the water heating unit, and the ozone supply unit is capable of supplying ozone into the bypass branch.

In an embodiment of the present invention, the water supply device is a gas hot water supply device, the water heating unit includes a heat exchanger, the gas hot water supply device has a water inlet pipe and a water outlet pipe, a water inlet end of the heat exchanger is connected with the water inlet pipe, and a water outlet end of the heat exchanger is connected with the water outlet pipe; the bypass branch is arranged in parallel with the heat exchanger.

In an embodiment of the present invention, the circulation control means is a circulation pump provided in parallel with the ozone supply unit, and the part of the ozone-containing water flowing out of the ozone supply unit is caused to flow back to the ozone supply unit by the circulation pump.

In an embodiment of the present invention, the circulation control means includes a return water path provided in parallel with the ozone supply unit, and a first flow rate distribution means that causes a part of the ozone-containing water flowing out of the ozone supply unit to return to the ozone supply unit through the return water path.

In an embodiment of the present invention, the circulation control mechanism is a circulation pump disposed in parallel with the ozone supply unit, the bypass branch includes a bypass water path in which the ozone supply unit is disposed, and a return water path in parallel with the ozone supply unit, and the circulation pump is disposed on the return water path.

In an embodiment of the present invention, the bypass branch further includes a first flow rate distribution mechanism capable of regulating a flow rate of the ozone-containing water flowing into the return water path.

In an embodiment of the present invention, the bypass branch includes a bypass water path provided with the ozone supply unit, a return water path connected in parallel to the ozone supply unit, and a first flow distribution mechanism, and the circulation control mechanism includes the return water path and the first flow distribution mechanism, and the first flow distribution mechanism enables a part of the ozone-containing water flowing out of the ozone supply unit to flow back to the ozone supply unit through the return water path.

In an embodiment of the present invention, the first flow distributing mechanism is a flow control valve disposed on the backflow waterway, or the first flow distributing mechanism is a three-way flow valve, the three-way flow valve is connected to a junction between a water inlet end of the backflow waterway and a water outlet end of the bypass waterway, a first end of the three-way flow valve is communicated with the water inlet end of the backflow waterway, a second end of the three-way flow valve is communicated with the water outlet end of the bypass waterway, and a third end of the three-way flow valve is communicated with the water outlet end of the bypass branch.

In an embodiment of the present invention, a flow rate of the water containing ozone returned to the ozone supply unit by the circulation control mechanism is smaller than a flow rate of the intake water supplied into the bypass water path.

In an embodiment of the present invention, the ozone supply unit is an electrolyzed water ozone generator provided on the bypass water path.

In an embodiment of the present invention, the ozone supply unit includes an electrolytic air ozone generator capable of supplying ozone to a venturi structure provided on the bypass water path, and a venturi structure.

In an embodiment of the present invention, the venturi structure has a water pipe and a vent pipe communicating with each other, the water pipe is connected to the bypass water passage, and the vent pipe is connected to the electrolytic air ozone generator.

In an embodiment of the invention, the water supply device further comprises a second flow distribution means capable of regulating the water supplied into the water supply device into the water heating unit and/or into the bypass branch.

In an embodiment of the invention, the flow rate of the inlet water supplied into the bypass branch by the second flow distributing mechanism is smaller than the flow rate of the inlet water supplied into the water heating unit.

In an embodiment of the present invention, a ratio of a flow rate of the inlet water in the bypass branch to a total amount of the inlet water supplied to the water supply device is 0.15 to 0.4.

In an embodiment of the present invention, the second flow distributing mechanism is a flow three-way valve, a first end of the flow three-way valve is communicated with the water inlet end of the bypass branch, a second end of the flow three-way valve is communicated with the water inlet end of the water supplying device, and a third end of the flow three-way valve is communicated with the water inlet end of the water heating unit; or, the second flow distribution mechanism is a flow control valve arranged on the water inlet end of the bypass branch.

The invention also provides gas-fired water heating equipment comprising the water supply device.

In an embodiment of the invention, the gas-fired water heating apparatus has at least two operating states, wherein,

the first working state is as follows: the gas-fired hot water apparatus is used to supply hot water to a user in a state where the ozone supply unit is turned off;

the second working state is as follows: in a state where the ozone supply unit is activated, the gas-fired hot water apparatus is used to supply hot water containing ozone to a user.

The water supply device and the gas water heating equipment have the characteristics and advantages that:

1. according to the water supply device, water is supplied into the water inlet end of the water heating unit, the inlet water flows to the water heating unit and flows out of the water outlet end of the water heating unit after being heated in the water heating unit, and meanwhile, ozone is supplied to the water supply device through the ozone supply unit, so that the water output from each water outlet point of the water supply device contains ozone, and the effects of removing bacteria, sterilizing, removing pesticide residues, removing odor in pipelines and the like are achieved; in addition, the invention improves the concentration of ozone contained in water output from each water outlet point of the water supply device by arranging the circulation control mechanism to recycle part of water containing ozone supplied by the ozone supply unit in the ozone supply unit.

2. The invention enables the water containing ozone provided by the ozone supply unit to flow out through the bypass branch by the design of the bypass branch, and to be discharged from each water outlet point of the water supply device after being converged with the water flow heated by the water heating unit.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a first example of a circulation control mechanism according to a first embodiment of a water supply apparatus of the present invention.

Fig. 2 is a schematic structural view of a second example of the circulation control mechanism of the first embodiment of the water supply apparatus according to the present invention.

Fig. 3 is a schematic structural view of a third example of the circulation control mechanism of the first embodiment of the water supply apparatus of the present invention.

Fig. 4 is a schematic structural view of a first example of a circulation control mechanism of a second embodiment of a water supply apparatus according to the present invention.

Fig. 5 is a schematic structural view of a second example of the circulation control mechanism of the second embodiment of the water supply apparatus according to the present invention.

Fig. 6 is a schematic structural view of a third example of the circulation control mechanism of the second embodiment of the water supply apparatus according to the present invention.

Fig. 7 is a schematic structural view of a fourth example of the circulation control mechanism of the second embodiment of the water supply apparatus according to the present invention.

Fig. 8 is a schematic structural view of a fifth example of the circulation control mechanism of the second embodiment of the water supply apparatus according to the present invention.

Fig. 9 is a schematic structural view of a sixth example of the circulation control mechanism of the second embodiment of the water supply apparatus according to the present invention.

Fig. 10 is a schematic structural view of a first example of a circulation control mechanism according to a third embodiment of the water supply apparatus of the present invention.

Fig. 11 is a schematic structural view of a second example of the circulation control mechanism of the third embodiment of the water supply apparatus according to the present invention.

Fig. 12 is a schematic structural view of a third example of the circulation control mechanism of the third embodiment of the water supply apparatus according to the present invention.

Fig. 13 is a schematic structural view of a fourth example of the circulation control mechanism of the third embodiment of the water supply apparatus according to the present invention.

Fig. 14 is a schematic structural view of a fifth example of the circulation control mechanism of the third embodiment of the water supply apparatus according to the present invention.

Fig. 15 is a schematic structural view of a sixth example of the circulation control mechanism of the third embodiment of the water supply apparatus according to the present invention.

Fig. 16 is a schematic structural view of an embodiment of an ozone supply unit of a water supply device according to the present invention in combination with a circulation control mechanism according to the first embodiment.

Fig. 17a and 17b are schematic structural views of an embodiment of an ozone supply unit of a water supply device of the present invention in combination with a circulation control mechanism of a second embodiment.

Fig. 18a and 18b are schematic structural views of an embodiment of an ozone supply unit of a water supply device of the present invention in combination with a circulation control mechanism of a third embodiment.

Fig. 19 is a schematic structural view of an embodiment of the water supply device of the present invention having a second flow rate distribution mechanism.

Fig. 20 is a schematic structural view of another embodiment of the water supply device of the present invention having a second flow rate distribution mechanism.

Reference numerals and description:

1. a water heating unit; 11. a water inlet end; 12. a water outlet end; 13. a bypass branch; 131. a bypass waterway; 132. a return water path; 133. a first flow distributing mechanism; 14. a water inlet connecting pipe; 15. a water outlet connecting pipe; 2. an ozone supply unit; 21. an electrolytic air ozone generator; 22. a venturi structure; 221. a water pipe; 222. a breather pipe; 3. a circulation control mechanism; 31. a circulation pump; 4. a second flow distributing mechanism; 10. a water supply device; 101. a water outlet point; 102. a water inlet pipe; 103. and (5) discharging a water pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is considered as indicating or implying relative importance. In addition, in the description of the present invention, "at least one" means one or more than one, and "a plurality" means two or more than two, unless otherwise specified. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.

Implementation mode one

As shown in fig. 1 to 15, the present invention provides a water supply apparatus 10, including: a water heating unit 1 having a water inlet end 11 and a water outlet end 12; an ozone supply unit 2 for containing ozone in the water outputted from the water supply device 10; a circulation control mechanism 3 cooperating with the ozone supply unit 2, the circulation control mechanism 3 being configured to cause a part of the ozone-containing water flowing out of the ozone supply unit 2 to flow into the ozone supply unit 2 again.

In the present invention, the water supply device 10 has an inlet pipe 102 and an outlet pipe 103, the water inlet end 11 of the water heating unit 1 can be communicated with the inlet pipe 102 through an inlet connecting pipe 14, and the water outlet end of the water heating unit 1 can be communicated with the outlet pipe 103 through an outlet connecting pipe 15.

The water supply device 10 of the present invention supplies water into the water inlet end 11 of the water heating unit 1, the inlet water flows to the water heating unit 1 and flows out from the water outlet end 12 thereof after the heating treatment is completed in the water heating unit 1, as shown by arrows in fig. 1 to 15, and simultaneously supplies ozone to the water supply device 10 through the ozone supply unit 2, so that the water output from each water outlet point 101 of the water supply device 10 contains ozone, thereby achieving the effects of degerming, sterilizing, removing pesticide residues, removing odor in pipes, etc.; in addition, the present invention improves the concentration of ozone contained in water outputted from each water outlet point 101 of the water supply device 10 by providing the circulation control means 3 so that a part of the water containing ozone supplied from the ozone supply unit 2 is recycled in the ozone supply unit 2. In the present invention, the water outlet 101 may be a water outlet tap or other water outlet device.

In a possible embodiment of the first embodiment of the present invention, as shown in fig. 2, the ozone supply unit 2 can supply ozone to the water inlet end 11 of the water heating unit 1, that is, supply ozone to the water inlet connection pipe 14, after the water inlet pipe 102 of the water supply device 10 is fed with water flow, the ozone supplied by the ozone supply unit 2 will dissolve in the water inlet, and then flow into the water heating unit 1, the ozone content in the water inlet will inevitably decrease due to the heat effect of the water heating unit 1, and in order to ensure that the ozone concentration contained in the water outlet of the water supply device 10 does not change or increases, the present invention returns part of the water containing ozone supplied by the ozone supply unit 2 to the ozone supply unit 2 again through the effect of the circulation control mechanism 3, so as to increase the ozone content in the water inlet end 11 of the water heating unit 1, thereby avoiding the risk of ozone concentration decrease in the water outlet of the water supply device 10 due to the heat effect of the water heating unit 1.

In another possible embodiment of the first embodiment of the present invention, as shown in fig. 3, the ozone supply unit 2 can supply ozone to the water flowing out from the water outlet end 12 of the water heating unit 1, that is, supply ozone to the water outlet connecting pipe 15, the water flowing into the water inlet pipe 102 of the water supply device 10 flows into the water heating unit 1 through the water inlet connecting pipe 14 to be heated, the heated water flows out from the water outlet end 12, and the ozone provided by the ozone supply unit 2 is dissolved in the water flowing out from the water outlet connecting pipe 15, the present invention uses the action of the circulation control mechanism 3 to return the water provided by the ozone supply unit 2 and containing ozone to the ozone supply unit 2 again, so as to increase the ozone content in the water flowing out from the water outlet connecting pipe 15 by the ozone supply unit 2, thereby relatively increasing the ozone concentration in the water output from each water outlet point 101 of the water supply device 10.

In a preferred embodiment of the first embodiment of the present invention, as shown in fig. 1, the water supply device 10 further comprises a bypass branch 13 communicating with the water inlet end 11 and the water outlet end 12 of the water heating unit 1, and the ozone supply unit 2 can supply ozone into the bypass branch 13. In the present embodiment, the bypass branch 13 is provided, so that the ozone supply unit 2 supplies ozone to the bypass branch 13, and the water containing ozone flows into the water flowing out from the water outlet end 12 of the water heating unit 1 through the bypass branch 13, and is discharged from each water outlet point 101 of the water supply device 10 after being mixed, and the water containing ozone supplied by the ozone supply unit 2 does not pass through the water heating unit 1, thereby effectively avoiding the problem of the reduction of the ozone concentration in the water discharged from the water supply device 10 due to the heat effect.

In the present invention, the water supply device 10 may be a gas hot water supply device, the water heating unit 1 includes a heat exchanger, the gas hot water supply device has a water inlet pipe 102 and a water outlet pipe 103, the water inlet end of the heat exchanger is connected to the water inlet pipe 102, and the water outlet end of the heat exchanger is connected to the water outlet pipe 103; the bypass branch 13 is arranged in parallel with the heat exchanger.

When the temperature of the hot water supplied by the gas hot water supply device is usually 20-30 ℃, and the water containing ozone flows into the heat exchanger of the gas hot water supply device through the water inlet end 11, the ozone concentration in the water containing ozone is reduced due to the influence of the temperature, and the ozone concentration in the water discharged from each water outlet point 101 of the water supply device 10 is further reduced, so that the effects of sterilization, disinfection, pesticide residue removal and the like are influenced. The preferred embodiment utilizes the design of the bypass branch 13 to make the water containing ozone bypass the water heating unit 1, i.e. the water containing ozone does not flow through the heat exchanger, thereby effectively avoiding the risk of reducing the ozone content in the outlet water of the water supply device 10 due to the overhigh heating temperature of the heat exchanger; in addition, the risk of damage to the water tank of the heat exchanger caused by the ozone-containing water flowing through the heat exchanger for a long time is further avoided.

In the present invention, the temperature of the water supplied from the water heating unit 1 may be greater than or equal to the temperature of the ozone-containing water supplied from the ozone supply unit 2. In the preferred embodiment of fig. 1, since the ozone supply unit 2 supplies ozone into the bypass branch 13, and the bypass branch 13 is arranged in parallel with the water heating unit 1, the concentration of ozone in the water discharged from each water outlet point 101 of the water supply device 10 is not affected regardless of the change of the heating temperature of the water heating unit 1. The water supply apparatus 10 of the present invention, using the preferred embodiment of fig. 1, not only can achieve the effect of avoiding the problem of the ozone concentration in the outlet water from decreasing, but also can achieve the effect of increasing the ozone concentration in the outlet water by the circulation control mechanism 3.

According to one embodiment of the present invention, as shown in fig. 1 to 9, the circulation control mechanism 3 is a circulation pump 31 disposed in parallel with the ozone supply unit 2, so that part of the ozone-containing water flowing out of the ozone supply unit 2 is returned to the ozone supply unit 2 through the circulation pump 31. By arranging the circulating pump 31, the invention can make part of the water containing ozone supplied by the ozone supply unit 2 to the water inlet connecting pipe 14, the water outlet connecting pipe 15 or the bypass branch 13 flow back to the ozone supply unit 2 and flow into the water inlet end 11, the water outlet end 12 or the water inlet end of the bypass branch 13 of the water heating unit 1 after flowing through the ozone supply unit 2 again, so as to improve the solubility and the ozone concentration of the ozone in the water containing ozone.

According to another embodiment of the present invention, as shown in fig. 10 to 15, the circulation control means 3 includes a return water path 132 provided in parallel with the ozone supply unit, and a first flow distribution means 133, and the first flow distribution means 133 causes a portion of the ozone-containing water flowing out of the ozone supply unit 2 to return to the ozone supply unit 2 through the return water path 132. By providing the return water path 132 and the first flow distribution mechanism 133, the ozone-containing water supplied from the ozone supply unit 2 to the water inlet connection pipe 14, the water outlet connection pipe 15, or the bypass branch 13 partially returns to the ozone supply unit 2, and flows into the water inlet end 11, the water outlet end 12, or the water inlet end of the bypass branch 13 of the water heating unit 1 after flowing through the ozone supply unit 2 again, so as to improve the solubility and the ozone concentration of ozone in the ozone-containing water.

The ozone supply unit 2 will be described in detail below as an example of supplying ozone to the bypass branch 13.

As shown in fig. 1, the bypass branch 13 includes a bypass water path 131 provided with the ozone supply unit 2, and a return water path 132 connected in parallel with the ozone supply unit 2, and the circulation pump 31 is provided on the return water path 132. In the present invention, the purpose of adjusting the circulation flow rate can be achieved by adjusting the voltage of the circulation pump 31.

Further, as shown in fig. 4, the bypass branch 13 further includes a first flow distribution mechanism 133, and the first flow distribution mechanism 133 can regulate the flow rate of the ozone-containing water flowing into the return water path 132. The invention adopts the way that the first flow distribution mechanism 133 is arranged at the joint of the water outlet end of the ozone supply unit 2 and the return water channel 132, the purpose of regulating the circulating flow is achieved through the first flow distribution mechanism 133, and/or the purpose of regulating the circulating flow is achieved through the cooperation of the first flow distribution mechanism 133 and the circulating pump 31.

According to another embodiment of the present invention, as shown in fig. 10 to 15, the bypass branch 13 includes a bypass water path 131 provided with the ozone supply unit 2, a return water path 132 connected in parallel with the ozone supply unit 2, and a first flow distribution mechanism 133, the circulation control mechanism 3 includes the return water path 132 and the first flow distribution mechanism 133, and the first flow distribution mechanism 133 enables a part of the water containing ozone flowing out of the ozone supply unit 2 to return to the ozone supply unit 2 through the return water path 132.

In a possible embodiment of the first flow distributing mechanism 133 of the present invention, as shown in fig. 7 to 9 and 13 to 15, the first flow distributing mechanism 133 is a flow control valve disposed on the return water path 132.

In another possible embodiment of the first flow distributing mechanism 133 of the present invention, as shown in fig. 4 to 6 and 10 to 12, the first flow distributing mechanism 133 is a three-way valve, which is connected to the junction of the water inlet end of the return water path 132 and the water outlet end of the bypass water path 131, the first end of the three-way valve is communicated with the water inlet end of the return water path 132, the second end of the three-way valve is communicated with the water outlet end of the bypass water path 131, and the third end of the three-way valve is communicated with the water outlet end of the bypass branch 13, taking fig. 4 and 10 as an example.

After the water flow is introduced into the water inlet pipe 102 of the water supply device 10, a part of the inlet water flows into the water inlet end 11 of the water heating unit 1, and flows out from the water outlet end 12 after being heated by the water heating unit 1, and another part of the inlet water flows into the bypass branch 13, and forms water containing ozone after passing through the ozone supply unit 2 (such as an electrolyzed water ozone generator), and when the water containing ozone passes through the first flow distribution mechanism 133, a part of the water containing ozone is regulated to the return water path 132 and then flows back to the water inlet end of the bypass water path 131. In this embodiment, by providing the first flow distribution mechanism 133, the portion of the water containing ozone supplied from the ozone supply unit 2 to the bypass branch 13 can be returned to the water inlet end of the bypass water channel 131, so as to improve the solubility and concentration of ozone in the water containing ozone.

Further, in the present invention, the flow rate of the water containing ozone flowing back to the ozone supply unit 2 through the circulation control mechanism 3 is smaller than the flow rate of the inlet water supplied into the bypass water channel 131, so as to adjust the flow rate of the water containing ozone flowing back to the ozone supply unit 2, thereby achieving the purpose of optimal ozone production.

In a possible embodiment of the present invention, as shown in fig. 1, 4, 7, 10 and 13, the ozone supply unit 2 is an electrolyzed water ozone generator disposed on the bypass water path 131. After the water flow is introduced into the water inlet pipe 102 of the water supply device 10, a part of the inlet water flows into the water inlet end 11 of the water heating unit 1, flows out from the water outlet end 12 after being heated by the water heating unit 1, and the other part of the inlet water flows into the bypass branch 13, and forms water containing ozone after passing through the electrolyzed water ozone generator, wherein a part of the water containing ozone flows back to the water inlet end of the bypass water path 131 through the circulation control mechanism 3 (for example, the circulation pump 31) and flows into the electrolyzed water ozone generator again, so that the water flow passing through the electrolyzed water ozone generator is increased, on one hand, the problem of reduction of the ozone production amount caused by the heating of the electrolyzed water ozone generator is reduced, on the other hand, the water flow passing through the electrolyzed water ozone generator is increased, the solubility of the ozone dissolved in the water is relatively increased, and therefore, the ozone concentration in the water flowing out from each water outlet point 101 of the water supply device 10 is increased. Of course, the electrolyzed water ozone generator of this embodiment may be provided on the water inlet connection pipe 14 or the water outlet connection pipe 15 as shown in fig. 2 to 3, fig. 5 to 6, fig. 8 to 9, fig. 11 to 12, and fig. 14 to 15.

In another possible embodiment of the present invention, as shown in fig. 16, 17a, 17b, 18a, and 18b, the ozone supply unit 2 includes an electrolytic air ozone generator 21 and a venturi structure 22, the electrolytic air ozone generator 21 being capable of supplying ozone to the venturi structure 22, the venturi structure 22 being provided on the bypass water path 131. Of course, the venturi structure 22 of the ozone supply unit 2 according to this embodiment may be provided in the water inlet connection pipe 14 or the water outlet connection pipe 15, and the venturi structure 22 will be described below as being provided in the bypass water channel 131 as an example.

Specifically, the venturi structure 22 has a water pipe 221 and a vent pipe 222 communicating with each other, the water pipe 221 is connected to the bypass water passage 131, and the vent pipe 222 is connected to the electrolytic air ozone generator 21. The water pipe 221 is of a structure with a diameter reduced along the flowing direction of the inlet water, after the inlet water is introduced into the bypass water channel 131, the dynamic pressure of the inlet water reaches the maximum value at the narrowest part of the water pipe 221, the static pressure reaches the minimum value, the speed of the inlet water rises due to the reduction of the cross-sectional area of the water pipe 221, so that a pressure difference is generated, an external suction force is provided for the ozone gas conveyed in the vent pipe 222, the rapid mixing of the ozone and the water is realized, and the water containing the ozone is further generated and flows out from the water outlet end of the bypass water channel 131.

According to one embodiment of the invention, as shown in fig. 19 and 20, the water supply device 10 further comprises a second flow distribution means 4, the second flow distribution means 4 being capable of regulating the water supplied into the water supply device 10 into the water heating unit 1 and/or the bypass branch 13. According to the invention, the second flow distribution mechanism 4 is arranged, so that the water introduced into the water inlet pipe 102 of the water supply device 10 is adjusted into the water heating unit 1 and/or the bypass branch 13 as required, and the water inflow flowing through the ozone supply unit 2 can be effectively controlled under the condition that the water inflow of the water supply device 10 is constant, so that the ozone production amount of the ozone supply unit 2 and the ozone content in the water containing ozone are improved to the maximum extent.

In the present invention, only the schematic diagram of the second flow distributing mechanism 4 on the water supply device of the circulation control mechanism of the first embodiment is shown, and those skilled in the art can understand that the second flow distributing mechanism 4 can also be provided on the water supply devices shown in fig. 4, 7, 10 and 13, and the drawings are not provided herein.

In the present invention, the flow rate of the intake water supplied into the bypass branch 13 through the second flow distribution mechanism 4 is smaller than the flow rate of the intake water supplied into the water heating unit 1. Since the ozone concentration is relatively higher as the ratio of the inflow rate of water in the bypass branch 13 is higher when the flow rate of water flowing into the inlet pipe 102 of the water supply device 10 is constant, but the lifetime of the water heating unit 1 is reduced as the temperature in the water heating unit 1 is higher, the ratio of the inflow rate of water in the bypass branch 13 to the total inflow rate of water supplied to the water supply device 10 is 0.15 to 0.4 in order to ensure the maximum ozone generation amount of the ozone supply unit 2 and maintain the normal operation of the water heating unit 1.

In a possible embodiment of the second flow distributing means 4, as shown in fig. 19, the second flow distributing means is a three-way flow valve, a first end of which communicates with the water inlet of the bypass branch 13, a second end of which communicates with the water inlet pipe 102 of the water supply device, and a third end of which communicates with the water inlet 11 of the water heating unit 1.

In another possible embodiment of the second flow distributing mechanism 4, as shown in fig. 20, the second flow distributing mechanism 4 is a flow control valve arranged on the water inlet end of the bypass branch 13. The flow control valve is arranged to regulate the flow rate of water flowing into the bypass branch 13, thereby controlling the ozone production amount and ozone solubility of the ozone supply unit 2.

Second embodiment

As shown in fig. 1 to 20, the present invention further provides a gas-fired water heating apparatus including the water supply device according to the first embodiment. The detailed structure, operation principle and beneficial effects of the water supply device are not described in detail herein.

The invention relates to a gas water heating device, which makes part of water containing ozone supplied by an ozone supply unit 2 circulate in the ozone supply unit 2 through a circulation control mechanism 3 so as to achieve the purpose of improving the concentration of ozone in the water containing ozone.

The above are only a few embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the disclosure of the application document without departing from the spirit and scope of the present invention.

Claims (19)

1. A water supply device, comprising:

a water heating unit having a water inlet end and a water outlet end;

an ozone supply unit for making the water output by the water supply device contain ozone;

a circulation control mechanism cooperating with the ozone supply unit, the circulation control mechanism being configured to cause a portion of the ozone-containing water flowing out of the ozone supply unit to flow into the ozone supply unit again.

2. The water supply apparatus as claimed in claim 1, comprising a bypass branch communicable with the water inlet end and the water outlet end, the bypass branch being disposed in parallel with the water heating unit, the ozone supply unit being capable of supplying ozone into the bypass branch.

3. The water supply apparatus as claimed in claim 2, wherein the water supply apparatus is a gas-fired hot water supply apparatus, the water heating unit includes a heat exchanger, the gas-fired hot water supply apparatus has a water inlet pipe and a water outlet pipe, a water inlet end of the heat exchanger is connected to the water inlet pipe, and a water outlet end of the heat exchanger is connected to the water outlet pipe; the bypass branch is arranged in parallel with the heat exchanger.

4. The water supply apparatus as claimed in claim 1, wherein the circulation control means is a circulation pump provided in parallel with the ozone supply unit, and the part of the ozone-containing water flowing out of the ozone supply unit is caused to flow back to the ozone supply unit by the circulation pump.

5. The water supply apparatus according to claim 1, wherein the circulation control means includes a return water path provided in parallel with the ozone supply unit, and a first flow distribution means that causes a portion of the ozone-containing water flowing out of the ozone supply unit to flow back to the ozone supply unit through the return water path.

6. The water supply apparatus as claimed in claim 2, wherein the circulation control means is a circulation pump provided in parallel with the ozone supply unit, the bypass branch includes a bypass water path provided with the ozone supply unit, a return water path provided in parallel with the ozone supply unit, and the circulation pump is provided on the return water path.

7. The water supply of claim 6 wherein the bypass branch further comprises a first flow distribution mechanism capable of regulating the flow of ozone-containing water into the return waterway.

8. The water supply apparatus according to claim 2, wherein the bypass branch comprises a bypass water path provided with the ozone supply unit, a return water path connected in parallel with the ozone supply unit, and a first flow distribution mechanism, and the circulation control mechanism comprises the return water path and the first flow distribution mechanism, and the first flow distribution mechanism enables the portion of the ozone-containing water flowing out of the ozone supply unit to flow back to the ozone supply unit through the return water path.

9. The water supply apparatus as claimed in claim 7 or 8, wherein the first flow distribution mechanism is a flow control valve disposed on the return waterway, or the first flow distribution mechanism is a three-way flow valve connected to a junction of the water inlet end of the return waterway and the water outlet end of the bypass waterway, a first end of the three-way flow valve is communicated with the water inlet end of the return waterway, a second end of the three-way flow valve is communicated with the water outlet end of the bypass waterway, and a third end of the three-way flow valve is communicated with the water outlet end of the bypass branch.

10. The water supply apparatus as claimed in any one of claims 6 to 8, wherein a flow rate of the ozone-containing water returned to the ozone supply unit by the circulation control mechanism is smaller than a flow rate of the intake water supplied into the bypass water path.

11. The water supply apparatus as claimed in any one of claims 6 to 8, wherein the ozone supply unit is an electrolyzed water ozone generator provided on the bypass water path.

12. The water supply apparatus according to any one of claims 6 to 8, wherein the ozone supply unit includes an electrolytic air ozone generator capable of supplying ozone to a venturi structure provided on the bypass water path, and a venturi structure.

13. The water supply of claim 12 wherein said venturi structure has a communicating water line connected to said bypass water path and a communicating air line connected to said electrolytic air ozone generator.

14. The water supply of claim 2 further comprising a second flow distribution mechanism capable of regulating the water supplied into the water supply into the water heating unit and/or the bypass branch.

15. The water supply of claim 14 wherein the flow of inlet water supplied into the bypass branch by the second flow divider mechanism is less than the flow of inlet water supplied into the water heating unit.

16. The water supply of claim 15 wherein the ratio of the flow rate of incoming water in said bypass branch to the total amount of incoming water supplied to said water supply is between 0.15 and 0.4.

17. The water supply apparatus as claimed in claim 14, wherein the second flow distributing mechanism is a flow three-way valve, a first end of the flow three-way valve is communicated with the water inlet end of the bypass branch, a second end of the flow three-way valve is communicated with the water inlet end of the water supply apparatus, and a third end of the flow three-way valve is communicated with the water inlet end of the water heating unit; or the second flow distribution mechanism is a flow control valve arranged on the water inlet end of the bypass branch.

18. A gas-fired water heating apparatus comprising a water supply device as claimed in any one of claims 1 to 17.

19. The gas-fired water heating apparatus according to claim 18, wherein said gas-fired water heating apparatus has at least two operating states, wherein,

the first working state is as follows: the gas-fired hot water apparatus is used to supply hot water to a user in a state where the ozone supply unit is turned off;

the second working state is as follows: in a state where the ozone supply unit is activated, the gas-fired hot water apparatus is used to supply hot water containing ozone to a user.

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