Water heater

Abstract

The utility model discloses a water heater which comprises a heating structure which comprises a gas heat exchanger and an electric heater. The water pipe assembly comprises a first water pipe and a second water pipe, the first water pipe is connected with the gas heat exchanger, the second water pipe is connected with the electric heater, the water inlet end of the first water pipe and the water inlet end of the second water pipe both communicate with a water supply pipeline outside the gas water heater, and the water outlet end of the first water pipe and the water outlet end of the second water pipe both communicate with a water using pipeline; the first water quantity server is mounted at the water inlet end of the first water pipe and used for controlling the flow of water entering the first water pipe; the second water quantity server is mounted at the water inlet end of the second water pipe and used for controlling the water flow entering the second water pipe; the first flow sensor is mounted at the water inlet end of the first water pipe and used for detecting the flow of water flowing into the first water pipe through the water inlet part; the second flow sensor is mounted at the joint of the first water pipe, the second water pipe and the water supply pipeline.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of home appliance, especially relates to a water heater. BACKGROUND

[0002] With the continuous progress of society, the continuous improvement of people's living standards, the user's demand for good experience in the bathing process is also more and more strong, how to make the user's bathing experience can be improved, at present has become one of the research directions of the bathing technology of the fuel heating industry. The current gas water heater has the following problems that affect the user's bathing comfort:

[0003] 1. When the water inlet temperature is too high in summer, the minimum temperature rise cannot meet the bathing comfort requirement;

[0004] 2. When the water inlet temperature is too low in winter, the maximum temperature rise cannot meet the bathing comfort requirement;

[0005] 3. When the water heater is restarted, a high-temperature hot water will be discharged first, and the water stop temperature rise affects the bathing comfort;

[0006] 4. When the water heater starts, a cold water will appear in the process due to the need to start ignition, and the hot water discharge time is slow, which affects the bathing comfort.

[0007] Therefore, a water heater is needed to solve the above problems. INVENTION CONTENTS

[0008] The utility model aims at at least in a certain extent solves one of the problems existing in prior art related, for this, the utility model provides a kind of water heater, can avoid that user is scalded by the excessively high outlet temperature, still can be supplemented by the heating water amount of water heater by the electric heater of increasing.

[0009] The above-mentioned purpose is realized by the following technical solutions:

[0010] A water heater, comprising:

[0011] A heating structure comprising a gas heat exchanger and an electric heater;

[0012] A water pipe assembly comprising a first water pipe and a second water pipe, the first water pipe is connected with the gas heat exchanger, the second water pipe is connected with the electric heater, the water inlet end of the first water pipe and the water inlet end of the second water pipe are communicated with the water supply pipeline outside the gas water heater, and the water outlet end of the first water pipe and the water outlet end of the second water pipe are communicated with the water pipe;

[0013] A first water quantity servo, installed at the water inlet end of the first water pipe, for controlling the water flow entering the first water pipe;

[0014] a second water flow servo installed at the water inlet end of the second water pipe for controlling the water flow into the second water pipe;

[0015] a first flow sensor installed at the water inlet end of the first water pipe for detecting the water flow into the first water pipe via the water inlet end;

[0016] a second flow sensor installed at the joint of the first water pipe, the second water pipe and the water supply pipeline for detecting the water flow into the first water pipe and the second water pipe.

[0017] Optionally, the water pipe assembly further comprises a tee, the water inlet end of the first water pipe and the water inlet end of the second water pipe are both communicated with the water supply pipeline through the tee, and the second flow sensor is installed at the port where the tee is connected with the water supply pipeline.

[0018] Optionally, the first water pipe comprises a first water inlet section and a first water outlet section, the water inlet end of the gas heat exchanger is communicated with the water outlet end of the first water inlet section, the water outlet end of the gas heat exchanger is communicated with the water inlet end of the first water outlet section, the water inlet end of the first water inlet section is communicated with the first water outlet end of the tee, the second water pipe comprises a second water inlet section and a second water outlet section, the water inlet end of the electric heater is communicated with the water outlet end of the second water inlet section, the water outlet end of the electric heater is communicated with the water inlet end of the second water outlet section, the water inlet end of the first water inlet section is communicated with the first water outlet end of the tee, the water inlet end of the second water inlet section is communicated with the second water outlet end of the tee, the water inlet end of the tee is communicated with the water supply pipeline, and the water outlet end of the first water outlet section and the water outlet end of the second water outlet section are both communicated with the water using pipeline.

[0019] Optionally, the first flow sensor is installed on the tee, and the first flow sensor is located between the first water outlet end of the tee and the second water outlet end of the tee.

[0020] Optionally, the second flow sensor is installed on the tee, and the second flow sensor is located between the second water outlet end of the tee and the water inlet end of the tee.

[0021] Optionally, the electric heater comprises a heating body and a coil pipe wound around the lateral side of the heating body, the heating body is connected with electricity, one end of the coil pipe is provided with a water inlet portion, and the other end of the coil pipe is provided with a water outlet portion, the water inlet portion is communicated with the water outlet end of the second water inlet section, and the water outlet portion is communicated with the water inlet end of the second water outlet section.

[0022] Optionally, the water heater further comprises a first temperature sensor and a second temperature sensor, the first temperature sensor is installed at the connection between the first water pipe, the second water pipe and the water supply pipe, and is used for detecting the temperature of the water before heating, and the second temperature sensor is installed at the connection between the first water pipe, the second water pipe and the water supply pipe, and is used for detecting the temperature of the water after heating.

[0023] Optionally, the water heater further comprises a control display, the control display comprises buttons and a display screen, a user controls the operation program and the preset temperature of the water heater through the buttons, and the display screen is used for displaying the real-time temperature, the preset temperature and the operation mode of the water heater.

[0024] Compared with the prior art, the water heater has at least the following beneficial effects:

[0025] The water heater has the advantages that on one hand, the second water amount servo device is used to deliver cold water into the electric heater for heating, so that the hot water is supplemented, and the power of the water heater is improved; on the other hand, the second water amount servo device is used to provide cold water for the water heater, so that the hot water in the water heater is neutralized, the water temperature in the water heater is reduced, and the user is prevented from being scalded by the excessively high water outlet temperature. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic view of the water heater provided by the utility model;

[0027] Figure 2 is a structural schematic view of the electric heater of the water heater provided by the utility model;

[0028] Figure 3 is one of the operation step diagrams of the water heater provided by the utility model;

[0029] Figure 4 is the second operation step diagram of the water heater provided by the utility model;

[0030] Figure 5 is the third operation step diagram of the water heater provided by the utility model.

[0031] In the drawings:

[0032] 11, gas heat exchanger; 12, electric heater; 121, heating body; 122, coil pipe; 1221, water inlet part; 1222, water outlet part;

[0033] 2, water pipe assembly; 21, first water pipe; 211, first water inlet section; 212, first water outlet section; 22, second water pipe; 221, second water inlet section; 222, second water outlet section; 23, tee joint;

[0034] 31, first water amount servo device; 32, second water amount servo device;

[0035] 41, first flow sensor; 42, second flow sensor;

[0036] 51, first temperature meter; 52, second temperature meter. DETAILED DESCRIPTION

[0037] The following examples are used to illustrate the present application, but the present application is not limited by these examples. Modifications or equivalent replacements of the specific implementation manners of the present application or partial technical features are made without departing from the spirit of the present application, which should be covered in the technical solution range claimed by the present application.

[0038] Please refer to Figures 1-2 The present application provides a water heater, comprising a heating structure, a water pipe assembly 2, a first water quantity servo 31, a second water quantity servo 32, a first flow sensor 41 and a second flow sensor 42. The heating structure comprises a gas heat exchanger 11 and an electric heater 12. The water pipe assembly 2 comprises a first water pipe 21 and a second water pipe 22, the first water pipe 21 is connected with the gas heat exchanger 11, the second water pipe 22 is connected with the electric heater 12, the water inlet end of the first water pipe 21 and the water inlet end of the second water pipe 22 are both communicated with the water supply pipeline outside the gas water heater, the water outlet end of the first water pipe 21 and the water outlet end of the second water pipe 22 are both communicated with the water using pipeline. The first water quantity servo 31 is installed at the water inlet end of the first water pipe 21, for controlling the water flow entering the first water pipe 21. The second water quantity servo 32 is installed at the water inlet end of the second water pipe 22, for controlling the water flow entering the second water pipe 22. The first flow sensor 41 is installed at the water inlet end of the first water pipe 21, for detecting the water flow flowing into the first water pipe 21 through the water inlet end. The second flow sensor 42 is installed at the connection between the first water pipe 21, the second water pipe 22 and the water supply pipeline, for detecting the water flow flowing into the first water pipe 21 and the second water pipe 22.

[0039] Specifically, please refer to Figure 3 The operation method of the water heater comprises the following steps:

[0040] S1: the gas water heater is in a hot standby mode;

[0041] S2: it is judged whether T 出 ≥ T 设 + T1, if yes, it indicates that the water outlet temperature of the water heater is too high, at this time the second water quantity servo 32 is adjusted to the first preset opening and S3 is entered, if no, S3 is directly entered;

[0042] S3: it is judged whether L 实 ≥ L 开机 , if yes, S4 is entered, if no, S1 is returned;

[0043] S4: judging whether T 出 ≥ T 设 + T1, if yes, entering S5, if no, entering S8;

[0044] S5: adjusting the second water quantity servo 32 to increase n% opening degree and entering S6;

[0045] S6: judging whether T 出 ≥ T 设 + T1, if yes, entering S6, if no, entering S8;

[0046] S7: judging whether the second water quantity servo 32 is opened to maximum, if yes, issuing a fault alarm, if no, returning to S5;

[0047] S8: starting the gas water heater;

[0048] Wherein, T 出 is the real-time water outlet temperature, T 设 is the preset water outlet temperature, T1 is the preset floating temperature, L 实 is the real-time water flow, L 开机 is the starting water flow of the gas heat exchanger 11.

[0049] The water heater provided by the utility model on one hand delivers cold water to the electric heater 12 through the second water quantity servo 32 to heat, realizes the supplement of hot water and improves the power of the water heater, on the other hand provides cold water for the water heater through the second water quantity servo 32 to neutralize the hot water in the water heater, reduce the water temperature in the water heater and avoid scalding the user by the high water outlet temperature, and has the advantages of simple and compact structure.

[0050] Optionally, T1 is 3°-7°.

[0051] Optionally, in the embodiment, n% is 10%. In other embodiments, n% can also be other values in 5%-20%.

[0052] Please refer to Figure 4 Optionally, S8 further comprises the following steps:

[0053] S9: judging whether Q 实 ≥ Q 额 , if yes, adjusting the second water quantity servo 32 to maximum opening degree and opening the first water quantity servo 31 to make the total water flow reach the preset flow L 设 , so that the actual total water flow reaches the starting water flow L 开机 , that is, L 设 = L 开机, and then the water heater can start smoothly, execute the electric auxiliary heating program and enter S10 (in this step, the electric heater starts and the gas heat exchanger 11 does not start), and if not, enter S12;

[0054] S10: execute the normal gas combustion heating program;

[0055] S11: judge whether L 实 ≥L 开机 , if yes, maintain the current working condition, and if not, return to S1;

[0056] S12: judge whether 0 实 ≤Q 设 , if yes, enter S13, and if not, enter S10;

[0057] S13: judge whether the electric auxiliary heating mode is selected, if yes, adjust the second water quantity servo 32 to the maximum opening, open the first water quantity servo 31, so that the total water flow reaches the preset flow L 设 , execute the electric auxiliary heating program and enter S11;

[0058] wherein Q 实 is the actual required power, Q 设 is the preset power, and Q 额 is the rated power of the gas heat exchanger 11.

[0059] Optionally, Q 设 is 3000KW.

[0060] Optionally, after S8, the following steps are further included:

[0061] S90: judge whether Q 实 ≥Q 额 , if yes, adjust the first water quantity servo 31 and the second water quantity servo 32, so that the total water flow is the minimum starting total flow L 启动 and enter S100, and if not, enter S130;

[0062] S100: adjust the first water quantity servo

[0063] 31, so that the water flow entering the gas heat exchanger 11 is L 开机 ;

[0064] S110: run the super-speed heating program to realize super-speed heating, so as to reduce the cold water generated after the water heater is paused and restarted;

[0065] S120: judge whether L 实 ≥L 开机 , if yes, maintain the current working condition, and if not, return to S1;

[0066] S130: Determine if 0 < Q 实 ≤Q 设 If yes, proceed to S140; otherwise, proceed to S100.

[0067] S140: Determine whether the electric auxiliary heating mode is selected. If so, adjust the second water flow servo 32 to its maximum opening and turn on the first water flow servo 31 so that the total water flow reaches the preset flow rate L. 设 If not, proceed to S120; otherwise, proceed to S100.

[0068] Among them, L 启动 The total water flow entering the first water pipe 21 and the second water pipe 22 is the total water flow, and the water flow allocated to the electric heater 12 and the gas heat exchanger 11 is the minimum water flow that can trigger the electric heater 12 and the gas heat exchanger 11 to start.

[0069] Optionally, in this embodiment, L 启动 The water flow rate L that triggers the gas heat exchanger 11 to start is 3L, and the water flow rate that triggers the electric heater 12 is 5L-3L=2L.

[0070] Please refer to Figure 5 Optionally, S110 includes the following steps:

[0071] S1101: Calculate Q 实 According to k1 times Q 实 The gas flow rate q of the gas valve of the gas heat exchanger 11 is calculated, and the opening of the gas valve is adjusted according to the gas flow rate q to achieve rapid heating.

[0072] S1102: Determine whether T_out = k2 × T_set. If yes, it means that the outlet water temperature is close to the preset temperature. Then proceed to S1103. If no, repeat S1102.

[0073] S1103: Increase the opening degree of the first water volume servo 31 by m%, according to Q. 实 Calculate the corresponding gas flow rate q1 of the gas valve, and adjust the opening of the gas valve according to the gas flow rate q1 to gradually increase the water flow rate;

[0074] S1104: Determine if Q is true 实 =Q 额 If yes, maintain the current operating condition; otherwise, proceed to S1105.

[0075] S1105: Determine whether the first water volume servo 31 is adjusted to the maximum opening. If yes, maintain the current working condition; otherwise, return to S1103.

[0076] Where 1 < k1 ≤ 1.5 and 0.8 ≤ k2 < 1.

[0077] Optionally, in the embodiment, m% is 10%. In other embodiments, m% can also be other values in the range of 5%-20%.

[0078] Optionally, the water pipe assembly 2 further comprises a tee joint 23, the water inlet end of the first water pipe 21 and the water inlet end of the second water pipe 22 are both communicated with the water supply pipeline through the tee joint 23, and the second flow sensor 42 is installed at the port where the tee joint 23 is connected with the water supply pipeline.

[0079] Optionally, the first water pipe 21 comprises a first water inlet section 211 and a first water outlet section 212, the water inlet end of the gas heat exchanger 11 is communicated with the water outlet end of the first water inlet section 211, the water outlet end of the gas heat exchanger 11 is communicated with the water inlet end of the first water outlet section 212, the water inlet end of the first water inlet section 211 is communicated with the first water outlet end of the tee joint 23, the second water pipe 22 comprises a second water inlet section 221 and a second water outlet section 222, the water inlet end of the electric heater 12 is communicated with the water outlet end of the second water inlet section 221, the water outlet end of the electric heater 12 is communicated with the water inlet end of the second water outlet section 222, the water inlet end of the first water inlet section 211 is communicated with the first water outlet end of the tee joint 23, the water inlet end of the second water inlet section 221 is communicated with the second water outlet end of the tee joint 23, the water inlet end of the tee joint 23 is communicated with the water supply pipeline, and the water outlet end of the first water outlet section 212 and the water outlet end of the second water outlet section 222 are both communicated with the water using pipeline.

[0080] Optionally, the first flow sensor 41 is installed on the tee joint 23, and the first flow sensor 41 is located between the first water outlet end of the tee joint 23 and the second water outlet end of the tee joint 23, so as to detect the water flow to the first water pipe 21.

[0081] Optionally, the second flow sensor 42 is installed on the tee joint 23, and the second flow sensor 42 is located between the second water outlet end of the tee joint 23 and the water inlet end of the tee joint 23, so as to detect the water flow to the first water pipe 21 and the second water pipe 22.

[0082] Optionally, the electric heater 12 comprises a heating body 121 and a coil pipe 122 wound around the side of the heating body 121, the heating body 121 is connected with electricity, one end of the coil pipe 122 is provided with a water inlet portion 1221, and the other end is provided with a water outlet portion 1222, the water inlet portion 1221 is communicated with the water outlet end of the second water inlet section 221, and the water outlet portion 1222 is communicated with the water inlet end of the second water outlet section 222.

[0083] Optionally, the first temperature meter 51 and the second temperature meter 52 are further included, the first temperature meter 51 is installed at the connection between the first water pipe 21, the second water pipe 22 and the water supply pipeline, for detecting the water temperature before heating, and the second temperature meter 52 is installed at the connection between the first water pipe 21, the second water pipe 22 and the water using pipeline, for detecting the water temperature after heating.

[0084] Optionally, a control display is further included, the control display comprises buttons and a display screen, a user controls an operation program, a preset temperature of the water heater through the buttons, and the display screen is used for displaying a real-time temperature, the preset temperature and an operation mode of the water heater.

[0085] Specifically, a user can select whether to open the electric auxiliary heating mode through the knob.

[0086] The above merely describes some embodiments of the present application. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A water heater, characterized by, The application relates to a gas water heater. The application comprises: a heating structure, including a gas heat exchanger (11) and an electric heater (12); a water pipe assembly (2), including a first water pipe (21) and a second water pipe (22), the first water pipe (21) being connected with the gas heat exchanger (11), the second water pipe (22) being connected with the electric heater (12), the water inlet end of the first water pipe (21) and the water inlet end of the second water pipe (22) being communicated with a water supply pipeline outside the gas water heater, the water outlet end of the first water pipe (21) and the water outlet end of the second water pipe (22) being communicated with a water using pipeline; a first water flow servo (31) installed at the water inlet end of the first water pipe (21) and used for controlling the water flow entering the first water pipe (21); a second water flow servo (32) installed at the water inlet end of the second water pipe (22) and used for controlling the water flow entering the second water pipe (22); a first flow sensor (41) installed at the water inlet end of the first water pipe (21) and used for detecting the water flow flowing into the first water pipe (21) through the water inlet end; 2. The water heater of claim 1, wherein a second flow sensor (42) installed at the connection between the first water pipe (21), the second water pipe (22) and the water supply pipeline and used for detecting the water flow flowing into the first water pipe (21) and the second water pipe (22).

3. The water heater of claim 2, wherein The water pipe assembly (2) further comprises a tee joint (23), the water inlet end of the first water pipe (21) and the water inlet end of the second water pipe (22) being communicated with the water supply pipeline through the tee joint (23), and the second flow sensor (42) being installed at the port where the tee joint (23) is connected with the water supply pipeline.

4. The water heater of claim 3, wherein The first water pipe (21) comprises a first water inlet section (211) and a first water outlet section (212), the water inlet end of the gas heat exchanger (11) being communicated with the water outlet end of the first water inlet section (211), the water outlet end of the gas heat exchanger (11) being communicated with the water inlet end of the first water outlet section (212), and the water inlet end of the first water inlet section (211) being communicated with the first water outlet end of the tee joint (23); the second water pipe (22) comprises a second water inlet section (221) and a second water outlet section (222), the water inlet end of the electric heater (12) being communicated with the water outlet end of the second water inlet section (221), the water outlet end of the electric heater (12) being communicated with the water inlet end of the second water outlet section (222), and the water inlet end of the second water inlet section (221) being communicated with the second water outlet end of the tee joint (23); the water inlet end of the tee joint (23) is communicated with the water supply pipeline, and the water outlet end of the first water outlet section (212) and the water outlet end of the second water outlet section (222) are communicated with the water using pipeline. The first flow sensor (41) is installed on the tee joint (23), and the first flow sensor (41) is located between the first water outlet end of the tee joint (23) and the second water outlet end of the tee joint (23).

5. The water heater of claim 3, wherein The second flow sensor (42) is installed on the tee joint (23), and is located between the second water outlet end of the tee joint (23) and the water inlet end of the tee joint (23).

6. The water heater of claim 3, wherein The electric heater (12) comprises a heating body (121) and a coil pipe (122) wound around the heating body (121), the heating body (121) is connected to electricity, one end of the coil pipe (122) is provided with a water inlet portion (1221), and the other end is provided with a water outlet portion (1222), the water inlet portion (1221) is communicated with the water outlet end of the second water inlet section (221), and the water outlet portion (1222) is communicated with the water inlet end of the second water outlet section (222).

7. The water heater of any one of claims 1-6, wherein the water heater is a tankless water heater. The first temperature meter (51) and the second temperature meter (52) are further included, the first temperature meter (51) is installed at the connection between the first water pipe (21), the second water pipe (22) and the water supply pipeline, and is used for detecting the water temperature before heating, and the second temperature meter (52) is installed at the connection between the first water pipe (21), the second water pipe (22) and the water use pipeline, and is used for detecting the water temperature after heating.

8. The water heater of any one of claims 1-6, wherein, The control display further comprises a button and a display screen, a user controls the operation program and the preset temperature of the water heater through the button, and the display screen is used for displaying the real-time temperature, the preset temperature and the operation mode of the water heater.

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