Cold water residue-free gas water heater

Abstract

The utility model belongs to the technical field of water heaters, and particularly relates to a cold-water-residue-free gas water heater which comprises a water heater body, the bottom of the water heater body is connected with a gas inlet pipe, a water inlet pipe and a water outlet pipe, the bottom of the gas inlet pipe is connected with a gas inlet valve, the bottom of the water inlet pipe is connected with a water inlet valve, and the bottom of the water outlet pipe is connected with a water outlet valve. The rear end of the water outlet valve is connected with a three-way pipe, a one-way air inlet check valve is installed at the top of the three-way pipe, the rear side of the three-way pipe is connected with a hot water pipe, and the other two ends of the hot water pipe are connected with a faucet and a shower faucet respectively. Meanwhile, due to the fact that the process of discharging cold water firstly is omitted, the process that the water heater body needs to be additionally heated for the same time is omitted, hot water at the tail section can be discharged from the hot water pipe without residues, the hot water heating time of the water heater body is shortened, and therefore energy consumption is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of water heaters, and in particular relates to a gas water heater without cold water residue. Background Art

[0002] A gas water heater, also known as a gas water boiler, is a gas appliance that uses gas as fuel and transfers heat to cold water flowing through a heat exchanger through combustion heating to prepare hot water. It is often installed in bathrooms to provide hot water for residents' bathing, washing, laundry and other activities. However, the current gas water heaters have a long pipe between the water heater body and the faucet. Therefore, after turning off the faucet, although the water heater will stop running, a certain amount of hot water will remain in this part of the pipe. This part of the hot water cannot be used and gradually cools down to cold water, which not only wastes the gas needed to heat this part of the water, but also causes this part of the cold water to be drained first when the hot water is used next time, which prolongs the heating time and wastes a certain amount of water resources. Utility Model Content

[0003] In view of the above problems, the purpose of the utility model is to provide a gas water heater without cold water residue, which avoids the problem of water waste caused by the water remaining in the hot water pipe after cooling and needing to be discharged before the hot water arrives. At the same time, since the process of discharging the cold water first is eliminated, the water heater body is not required to be heated for the same amount of time, and the hot water at the tail end can be discharged from the hot water pipe without residue, which reduces the time for the water heater body to heat the hot water, thereby saving energy consumption.

[0004] To achieve the above objectives, the utility model provides the following technical solutions: a gas water heater with no cold water residue, comprising a water heater body, the bottom of the water heater body is connected to an air inlet pipe, a water inlet pipe, and a water outlet pipe, the bottom of the air inlet pipe is connected to an air inlet valve, the bottom of the water inlet pipe is connected to the water inlet valve, the bottom of the water outlet pipe is connected to the water outlet valve, the rear end of the water outlet valve is connected to a three-way pipe, a one-way air inlet check valve is installed on the top of the three-way pipe, the rear side of the three-way pipe is connected to a hot water pipe, the other two ends of the hot water pipe are respectively connected to a faucet and a shower faucet, the one-way air inlet check valve comprises a valve body, a valve cavity is provided inside the valve body, an upper arc-shaped through groove is penetrated between the valve cavity and the top of the valve body, a lower arc-shaped through groove is penetrated between the valve cavity and the bottom of the valve body, a valve core is provided inside the valve body, and an upper valve seat and a lower valve seat are provided inside the valve cavity.

[0005] The beneficial effects of the utility model are as follows: when using the device, before finishing water use, close the water outlet valve, because the installation height of the one-way air inlet check valve is higher than the installation height of the faucet and the shower faucet, the hot water remaining in the hot water pipe continues to flow out under the action of gravity, and at the same time, the valve core that loses the water pressure force moves downward under the action of the spring rebound force and gravity until it contacts the lower valve seat, at which time the one-way air inlet check valve is in an open state, and outside air can enter the hot water pipe through the channel formed by the upper arc-shaped through groove, the valve cavity, and the lower arc-shaped through groove to balance the pressure, so that the water in the hot water pipe can flow out completely, so that no water will remain in the hot water pipe, and all the water in the hot water pipe is discharged The faucet and shower faucet can be closed after that. When hot water is needed again, the faucet and shower faucet can be opened after the water outlet valve is reopened. The water in the water heater body directly enters the hot water pipe after being heated and is discharged through the faucet and shower faucet. The discharged water is directly hot water, thus avoiding the problem of water waste caused by the water remaining in the hot water pipe needing to be discharged before the hot water arrives after cooling. At the same time, since the process of draining the cold water first is eliminated, the process of the water heater body needing to be heated for the same amount of time is eliminated, and the hot water at the tail end can be discharged from the hot water pipe without residue, reducing the time for the water heater body to heat the hot water, thereby saving energy consumption.

[0006] To remove the smoke generated during heating:

[0007] As a further improvement of the above technical solution: the top of the water heater body is connected to the smoke exhaust pipe.

[0008] The smoke exhaust pipe is used to exhaust the smoke generated during heating.

[0009] To prevent dust from entering the one-way air intake check valve:

[0010] As a further improvement of the above technical solution: a dust cover is installed on the top of the one-way air intake check valve, and a dust net is provided on the inner side of the dust cover.

[0011] The beneficial effect of this improvement is that the dustproof net is used to prevent dust from entering the one-way air intake check valve.

[0012] In order to ensure that all the hot water in the hot water pipe can be discharged after the outlet valve is closed:

[0013] As a further improvement of the above technical solution: the installation height of the one-way air inlet check valve is higher than the installation height of the faucet and the shower faucet.

[0014] The beneficial effect of this improvement is that the installation height of the one-way air inlet check valve is higher than the installation height of the faucet and the shower faucet, thereby ensuring that all the hot water in the hot water pipe can be discharged after the water outlet valve is closed.

[0015] To assist in pushing the valve core downward:

[0016] As a further improvement of the above technical solution: the inner top wall of the valve cavity is provided with a first groove, the top of the valve core is provided with a second groove, and a spring is connected between the first groove and the second groove.

[0017] The beneficial effect of this improvement is that the spring plays a role in assisting the valve core to be pushed downward.

[0018] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the right front axonometric structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the installation of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the one-way air intake check valve of the utility model when it is opened;

[0022] Figure 4 It is a structural schematic diagram of the one-way air intake check valve of the utility model when it is closed;

[0023] Figure 5 It is a schematic diagram of the top view of the one-way air intake check valve in the utility model;

[0024] Figure 6 It is a schematic diagram of the bottom structure of the one-way air intake check valve in the utility model;

[0025] In the figure: 1. water heater body; 2. smoke exhaust pipe; 3. air inlet pipe; 4. water inlet pipe; 5. water outlet pipe; 6. air inlet valve; 7. water inlet valve; 8. water outlet valve; 9. three-way pipe; 10. one-way air inlet check valve; 11. dust cover; 12. dust net; 13. hot water pipe; 14. faucet; 15. shower faucet; 16. valve body; 17. valve cavity; 18. upper arc-shaped through groove; 19. lower arc-shaped through groove; 20. valve core; 21. first groove; 22. second groove; 23. spring; 24. upper valve seat; 25. lower valve seat. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0027] like Figure 1-6As shown, a gas water heater without cold water residue comprises a water heater body 1, the bottom of the water heater body 1 is connected to an air inlet pipe 3, a water inlet pipe 4, and a water outlet pipe 5, the bottom of the air inlet pipe 3 is connected to an air inlet valve 6, the bottom of the water inlet pipe 4 is connected to a water inlet valve 7, the bottom of the water outlet pipe 5 is connected to a water outlet valve 8, the water outlet pipe 5 can be as short as possible while meeting the connection requirements, the rear end of the water outlet valve 8 is connected to a three-way pipe 9, a one-way air inlet check valve 10 is installed on the top of the three-way pipe 9, and the three-way pipe 9 is provided with a one-way air inlet check valve 10. The rear side is connected to a hot water pipe 13, and the other two ends of the hot water pipe 13 are respectively connected to a faucet 14 and a shower faucet 15. The one-way air inlet check valve 10 includes a valve body 16, and a valve cavity 17 is provided inside the valve body 16. An upper arc-shaped through groove 18 is penetrated between the valve cavity 17 and the top of the valve body 16, and a lower arc-shaped through groove 19 is penetrated between the valve cavity 17 and the bottom of the valve body 16. A valve core 20 is provided inside the valve body 16, and an upper valve seat 24 and a lower valve seat 25 are provided inside the valve cavity 17.

[0028] When using the device, before finishing water use, close the water outlet valve 8. Since the installation height of the one-way air inlet check valve 10 is higher than the installation height of the faucet 14 and the shower faucet 15, the hot water remaining in the hot water pipe 13 continues to flow out under the action of gravity. At the same time, the valve core 20, which has lost the water pressure force, moves downward under the action of the rebound force of the spring 23 and the action of gravity until it contacts the lower valve seat 25. At this time, the one-way air inlet check valve 10 is in an open state, and the outside air can enter the hot water pipe 13 through the channel formed by the upper arc-shaped through groove 18, the valve cavity 17, and the lower arc-shaped through groove 19 to balance the pressure, so that the water in the hot water pipe 13 can flow out completely, so that no water will remain in the hot water pipe 13. After the water in the hot water pipe 13 is completely discharged The faucet 14 and the shower faucet 15 can be closed. When hot water is needed again, the water outlet valve 8 can be reopened, and the faucet 14 and the shower faucet 15 can be opened. The water in the water heater body 1 directly enters the hot water pipe 13 after being heated and is discharged through the faucet 14 and the shower faucet 15. The discharged water is directly hot water, thereby avoiding the problem of water waste caused by the need to discharge the remaining water in the hot water pipe 13 before the hot water arrives after cooling. At the same time, since the process of discharging the cold water first is avoided, the water heater body 1 is not required to be heated for the same amount of time, and the hot water at the tail end can be discharged from the hot water pipe 13 without residue, which reduces the time for the water heater body 1 to heat the hot water, thereby saving energy consumption.

[0029] The top of the water heater body 1 is connected to the smoke exhaust pipe 2 .

[0030] The smoke exhaust pipe 2 is used to exhaust the smoke generated during heating.

[0031] A dust cover 11 is installed on the top of the one-way air intake check valve 10 , and a dust net 12 is provided on the inner side of the dust cover 11 .

[0032] The function of the dustproof net 12 is to prevent dust from entering the one-way air intake check valve 10 .

[0033] The installation height of the one-way air inlet check valve 10 is higher than the installation height of the faucet 14 and the shower faucet 15 .

[0034] The installation height of the one-way air inlet check valve 10 is higher than the installation height of the faucet 14 and the shower faucet 15, thereby ensuring that the hot water in the hot water pipe 13 can be completely discharged after the water outlet valve 8 is closed.

[0035] The inner top wall of the valve cavity 17 is provided with a first groove 21 , the top of the valve core 20 is provided with a second groove 22 , and a spring 23 is connected between the first groove 21 and the second groove 22 .

[0036] The spring 23 assists in pushing the valve core 20 downward.

[0037] Working principle and use process of the utility model: when the device is used, after opening the water outlet valve 8, the faucet 14 or the shower faucet 15 can be opened. At this time, the water heater body 1 heats the water and then outputs hot water from the water outlet pipe 5. The hot water flows through the water outlet valve 8, the three-way pipe 9, and the hot water pipe 13 to the faucet 14 and the shower faucet 15 and flows out. Under the pressure of the water, the valve core 20 is pushed up and tightly sealed with the upper valve seat 24 to prevent the hot water from flowing out from the upper arc-shaped groove 18 at the top of the one-way air inlet check valve 10. When the water use is about to end, the water outlet valve 8 is closed. Since the installation height of the one-way air inlet check valve 10 is higher than the installation height of the faucet 14 and the shower faucet 15, the hot water remaining in the hot water pipe 13 continues to flow out under the action of gravity. At the same time, the valve core 20 that has lost the water pressure force moves downward under the action of the rebound force of the spring 23 and the action of gravity to contact with the lower valve seat 25. At this time, the one-way air inlet check valve 10 is in an open state, and the outside air can pass through the upper arc-shaped groove 18. The channel formed by the groove 18, the valve cavity 17, and the lower arc-shaped through groove 19 enters the hot water pipe 13 to balance the pressure, so that the water in the hot water pipe 13 can flow out completely, so that no water will remain in the hot water pipe 13. After all the water in the hot water pipe 13 is discharged, the faucet 14 and the shower faucet 15 can be closed. When hot water is needed again, the water outlet valve 8 is reopened, and the faucet 14 and the shower faucet 15 can be opened. The water in the water heater body 1 directly enters the hot water pipe 13 after being heated and is discharged through the faucet 14 and the shower faucet 15. The discharged water is directly hot water, thereby avoiding the problem of water waste caused by the water remaining in the hot water pipe 13 needing to be discharged before the hot water arrives after cooling. At the same time, since the process of discharging cold water first is eliminated, the process of the water heater body 1 needing to heat the water for the same time is eliminated, and the hot water in the tail section can be discharged from the hot water pipe 13 without residue, reducing the time for the water heater body 1 to heat the hot water, thereby saving energy consumption.

[0038] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0039] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only the preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principle of the utility model, they can make several improvements, embellishments or changes, and can also combine the above technical features in an appropriate manner; these improvements, embellishments, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A gas water heater without cold water residue, characterized in that: The invention comprises a water heater body (1), wherein the bottom of the water heater body (1) is connected to an air inlet pipe (3), a water inlet pipe (4), and a water outlet pipe (5), the bottom of the air inlet pipe (3) is connected to an air inlet valve (6), the bottom of the water inlet pipe (4) is connected to a water inlet valve (7), the bottom of the water outlet pipe (5) is connected to a water outlet valve (8), the rear end of the water outlet valve (8) is connected to a three-way pipe (9), a one-way air inlet check valve (10) is installed on the top of the three-way pipe (9), the rear side of the three-way pipe (9) is connected to a hot water pipe (13), and the hot water pipe (13) is connected to the hot water pipe (13). 3) are respectively connected to a faucet (14) and a shower faucet (15). The one-way air inlet check valve (10) comprises a valve body (16). A valve cavity (17) is provided inside the valve body (16). An upper arc-shaped through groove (18) is provided between the valve cavity (17) and the top of the valve body (16). A lower arc-shaped through groove (19) is provided between the valve cavity (17) and the bottom of the valve body (16). A valve core (20) is provided inside the valve body (16). An upper valve seat (24) and a lower valve seat (25) are provided inside the valve cavity (17).

2. A gas water heater without cold water residue according to claim 1, characterized in that: The top of the water heater body (1) is connected to a smoke exhaust pipe (2).

3. A gas water heater without cold water residue according to claim 1, characterized in that: A dust cover (11) is installed on the top of the one-way air intake check valve (10), and a dust net (12) is provided on the inner side of the dust cover (11).

4. A gas water heater without cold water residue according to claim 1, characterized in that: The installation height of the one-way air inlet check valve (10) is higher than the installation height of the faucet (14) and the shower faucet (15).

5. A gas water heater without cold water residue according to claim 1, characterized in that: The inner top wall of the valve cavity (17) is provided with a first groove (21), the top of the valve core (20) is provided with a second groove (22), and a spring (23) is connected between the first groove (21) and the second groove (22).

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