A water heater and a water heater control method

Abstract

The application discloses a water heater and a water heater control method, and the water heater comprises a shell, a condensation heat exchanger and a main heat exchanger in the shell, the condensation heat exchanger is provided with a primary heat exchange water outlet unit and a condensate water outlet unit, the main heat exchanger is provided with a secondary heat exchange water inlet unit, the primary heat exchange water outlet unit is communicated with the secondary heat exchange water inlet unit, one end of the condensate water outlet unit is used for collecting condensate water of the condensation heat exchanger, and the other end of the condensate water outlet unit is communicated with the primary heat exchange water outlet unit; that is to say, the condensate water generated by the condensation heat exchanger is mixed with water in the primary heat exchange water outlet unit, and then enters the main heat exchanger through the secondary heat exchange water inlet unit, and is utilized again in the main heat exchanger; the setting mode saves water resources, realizes recycling of the water resources, does not need to additionally set a pipeline for discharging the condensate water, avoids pollution of the environment by the condensate water, and also avoids that the condensate water pipeline affects the appearance of the water heater.

Description

Technical Field

[0001] This invention belongs to the field of water heater technology and relates to a water heater and a water heater control method. Background Technology

[0002] A gas water heater, also known as a gas water boiler, is a gas appliance that uses gas as fuel and heats water by burning it. The heat is then transferred to cold water flowing through a heat exchanger to produce hot water.

[0003] Among gas water heaters, condensing gas water heaters are favored by the market due to their high heat exchange efficiency. Currently, the condensate drainage method for condensing water heaters on the market is as follows: condensate drips to the bottom of the condenser and is then discharged to the outside of the unit through a condensate drain pipe. On the one hand, the condensate drain pipe is located on the outside of the water heater, affecting the overall appearance of the water heater and resulting in a poor visual effect. On the other hand, directly discharging condensate to the outside will cause environmental pollution. Summary of the Invention

[0004] In view of this, the present invention provides a water heater and a water heater control method, which solves the technical problems of traditional water heaters requiring additional pipes to discharge condensate when handling condensate, thus affecting the appearance, and the direct discharge of condensate to the outside causing environmental pollution.

[0005] To address the aforementioned problems, according to one aspect of this application, an embodiment of the present invention provides a water heater, the water heater comprising a shell and a condensing heat exchanger and a main heat exchanger located within the shell, the condensing heat exchanger having a primary heat exchange outlet unit and a condensate outlet unit, the main heat exchanger having a secondary heat exchange inlet unit, the primary heat exchange outlet unit being connected to the secondary heat exchange inlet unit, one end of the condensate outlet unit being used to collect condensate from the condensing heat exchanger, and the other end of the condensate outlet unit being connected to the primary heat exchange outlet unit.

[0006] In some embodiments, a one-way flow regulating valve is provided between the other end of the condensate outlet unit and the primary heat exchange outlet unit.

[0007] In some embodiments, the water heater further includes an inlet component and an outlet component, the inlet component being connected to the primary inlet unit of the condensing heat exchanger, and the outlet component being connected to the secondary outlet unit of the main heat exchanger.

[0008] In some embodiments, the water heater further includes a neutralization component located within the housing, the neutralization component being connected to the inlet water component, the outlet water component, and the condensate outlet water unit, respectively, for controlling the pH value of the water at the outlet water component.

[0009] In some embodiments, the neutralization component includes a first water quality pH acquisition unit, a second water quality pH acquisition unit, and a third water quality pH acquisition unit. The first water quality pH acquisition unit is disposed at the inlet component to detect the pH value of the inlet water, the second water quality pH acquisition unit is disposed at the outlet component to detect the pH value of the outlet water, and the third water quality pH acquisition unit is disposed at the condensate outlet unit to detect the pH value of the condensate.

[0010] In some embodiments, the neutralization component further includes a controller, which is connected to the first water quality pH acquisition unit, the second water quality pH acquisition unit, the third water quality pH acquisition unit, and the one-way flow regulating valve, respectively; and the controller can control the opening of the one-way flow regulating valve according to the pH value of the effluent, thereby adjusting the pH value of the effluent obtained by neutralizing the pH value of the condensate and the pH value of the influent.

[0011] In some embodiments, the water heater further includes a fan disposed within the housing, the fan being located between the condensing heat exchanger and the main heat exchanger, for allowing flue gas generated by the main heat exchanger to enter the condensing heat exchanger.

[0012] In some embodiments, the water heater further includes a burner for heating the main heat exchanger, the burner being disposed within the housing.

[0013] According to another aspect of this application, an embodiment of the present invention provides a water heater control method, the water heater control method being used to control the aforementioned water heater, wherein a one-way flow regulating valve is provided between the condensate outlet unit and the primary heat exchange outlet unit of the water heater, and the water heater control method includes:

[0014] S1, Real-time acquisition of the pH value of the water outlet from the water heater. 出 ;

[0015] S2, determine pH 出 pH value relative to the preset standard pH value 标准 The relationship between them;

[0016] S3, when the pH 出 With the pH 标准 When the amounts are not equal, adjust the opening of the one-way flow regulating valve to control the mixing amount of condensate from the condensing heat exchanger and the primary heat exchange outlet water from the condensing heat exchanger.

[0017] In some embodiments, in S3 when the pH 出 With the pH 标准 When the values ​​are unequal, the opening of the one-way flow regulating valve is controlled as follows:

[0018] S31, real-time acquisition of the pH value of the water entering the water heater. 进 And the pH value of the condensate discharged from the condensate outlet unit. 凝 ;

[0019] S32, based on the pH of S31 进 and pH 凝 Adjust the opening of the one-way flow control valve to adjust the pH. 进 and pH 凝 pH obtained after neutralization 出 With the pH 标准 equal.

[0020] Compared with the prior art, the water heater of the present invention has at least the following beneficial effects:

[0021] The water heater provided by this invention includes a shell, a condensing heat exchanger, and a main heat exchanger located within the shell. The condensing heat exchanger has a primary heat exchange outlet unit and a condensate outlet unit, and the main heat exchanger has a secondary heat exchange inlet unit. The primary heat exchange outlet unit is connected to the secondary heat exchange inlet unit. One end of the condensate outlet unit is used to collect the condensate from the condensing heat exchanger, and the other end is connected to the primary heat exchange outlet unit. In other words, the condensate generated by the condensing heat exchanger in this invention mixes with the water in the primary heat exchange outlet unit and then enters the main heat exchanger through the secondary heat exchange inlet unit for reuse. This arrangement saves water resources and achieves water recycling. Furthermore, it eliminates the need for additional pipes to discharge condensate, avoiding environmental pollution and preventing condensate pipes from affecting the appearance of the water heater.

[0022] The water heater control method provided by this invention is designed based on the above-mentioned water heater, and its beneficial effects are the same as those of the above-mentioned water heater, which will not be repeated here.

[0023] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a water heater provided in an embodiment of the present invention;

[0026] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0027] Figure 3 yes Figure 1 A magnified view of a section at point B in the middle;

[0028] Figure 4 yes Figure 1 A magnified view of a section at point C;

[0029] Figure 5 This is a control block diagram of a neutralization component in a water heater provided by an embodiment of the present invention;

[0030] Figure 6 This is a control block diagram of a water heater provided in an embodiment of the present invention;

[0031] Figure 7 This is a flowchart of a water heater control method provided by an embodiment of the present invention.

[0032] in:

[0033] 1. Shell;

[0034] 2. Condensing heat exchanger; 21. Primary heat exchange outlet water unit; 22. Condensate outlet water unit; 23. One-way flow regulating valve; 24. Primary water inlet unit; 221. Condensate outlet water connector; 222. Condensate outlet water pipe;

[0035] 3. Main heat exchanger; 31. Secondary heat exchange inlet water unit; 32. Secondary outlet water unit;

[0036] 4. Water inlet assembly; 41. Water inlet connector; 42. Water inlet pipe;

[0037] 5. Water outlet assembly; 51. Water outlet connector; 52. Water outlet pipe;

[0038] 6. Neutralization component; 61. First water pH acquisition unit; 62. Second water pH acquisition unit; 63. Third water pH acquisition unit; 64. Controller;

[0039] 7. Fan;

[0040] 8. Burner. Detailed Implementation

[0041] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the specific embodiments, structures, features, and effects according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0042] In the description of this invention, it should be clearly stated that the terms "first," "second," etc., in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; the terms "vertical," "lateral," "longitudinal," "front," "rear," "left," "right," "up," "down," "horizontal," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are merely for the convenience of describing this invention, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this invention.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] Example 1

[0045] This embodiment provides a water heater, such as Figure 1-6 As shown, the water heater includes a shell 1, a condenser heat exchanger 2 and a main heat exchanger 3 located inside the shell 1. The condenser heat exchanger 2 has a primary heat exchange water outlet unit 21 and a condensate water outlet unit 22. The main heat exchanger 3 has a secondary heat exchange water inlet unit 31. The primary heat exchange water outlet unit 21 is connected to the secondary heat exchange water inlet unit 31. One end of the condensate water outlet unit 22 is used to collect the condensate water from the condenser heat exchanger 2, and the other end of the condensate water outlet unit 22 is connected to the primary heat exchange water outlet unit 21.

[0046] Specifically, the working principle of the water heater is as follows: when cold water enters the water heater, the burner turns on and starts ignition, and the fan works; during operation, the fan draws the high-temperature flue gas from the main heat exchanger 3 into the condensing heat exchanger 2 to heat it, thereby the condensing heat exchanger 2 is initially heated, which greatly reduces the use of gas and thus improves thermal efficiency.

[0047] In actual operation, the high-temperature flue gas generated by the main heat exchanger 3 forms liquid water after passing through the condenser heat exchanger 2, which is the condensate. Traditionally, condensate is discharged through an external condensate pipe. However, in this embodiment, the condensate generated by the condenser heat exchanger 2 mixes with the water in the primary heat exchange outlet unit 21 and enters the main heat exchanger 3 through the secondary heat exchange inlet unit 31, where it is reused. This arrangement saves water resources and realizes the recycling of water resources. On the other hand, it eliminates the need for additional pipes to discharge condensate, avoiding environmental pollution from condensate and preventing condensate pipes from affecting the appearance of the water heater.

[0048] In a specific embodiment, such as Figure 2 As shown, the other end of the condensate outlet unit 22 is connected to the primary heat exchange outlet unit 21 by a one-way flow regulating valve 23.

[0049] Specifically, the one-way flow regulating valve, also known as a check valve, only allows fluid to flow in one direction and does not allow backflow, i.e., it has the ability to conduct in one direction and cut off in the reverse direction. In this embodiment, the condensate flowing out of the condensate outlet unit 22 can flow to the pipeline of the primary heat exchange outlet unit 21 through the one-way flow regulating valve 23, but the water in the pipeline of the primary heat exchange outlet unit 21 cannot flow to the pipeline of the condensate outlet unit 22 through the one-way flow regulating valve 23; in this way, the condensate generated by the condenser heat exchanger 2 mixes with the water in the primary heat exchange outlet unit 21 and enters the main heat exchanger 3 together through the secondary heat exchange inlet unit 31, and there is no backflow.

[0050] More specifically, such as Figure 2 As shown, the primary heat exchange water outlet unit 21 includes a primary water outlet pipe, the condensate water outlet unit 22 includes a condensate water outlet connector 221 and a condensate water outlet pipe 222, the condensate water outlet connector 221 and the condensate water outlet pipe 222 are connected, and the secondary heat exchange water inlet unit 31 includes a secondary heat exchange water inlet pipe; one end of the condensate water outlet pipe 222 is connected to the condensate water outlet connector 221, and the other end of the condensate water outlet pipe 222 is connected to the secondary heat exchange water inlet pipe. A one-way flow regulating valve 23 is installed on the condensate water outlet pipe 222 to prevent water discharged from the primary water outlet pipe from flowing back into the condensate water outlet pipe 222.

[0051] In a specific embodiment, such as Figure 1 As shown, the water heater also includes an inlet assembly 4 and an outlet assembly 5. The inlet assembly 4 is connected to the primary inlet unit 24 of the condensing heat exchanger 2, and the outlet assembly 5 is connected to the secondary outlet unit 32 of the main heat exchanger 3.

[0052] More specifically, such as Figure 3As shown, the water inlet assembly 4 includes a water inlet connector 41 and a water inlet pipe 42. The water inlet connector 41 is fixed on the housing 1. The water inlet pipe 42 is disposed inside the housing 1 and connected to one end of the water inlet connector 41. The other end of the water inlet connector 42 is connected to the primary water inlet unit 24 disposed at the bottom of the condenser heat exchanger 2.

[0053] like Figure 4 As shown, the water outlet assembly 5 includes a water outlet connector 51 and a water outlet pipe 52. The water outlet connector 51 is fixed on the housing 1, and the water outlet pipe 52 is disposed inside the housing 1 and connected to one end of the water outlet connector 51. The other end of the water outlet connector 51 is connected to the main heat exchanger 3.

[0054] In a specific embodiment, such as Figure 5 As shown, the water heater also includes a neutralization component 6 located inside the housing 1. The neutralization component is connected to the water inlet component 4, the water outlet component 5, and the condensate outlet unit 22, respectively, and is used to control the pH value of the water at the water outlet component 5.

[0055] pH value refers to acidity or alkalinity, which is the concentration of hydrogen ions. When the concentration of hydrogen ions is greater than the concentration of hydroxide ions, it is acidic; when the concentration of hydrogen ions is equal to the concentration of hydroxide ions, it is neutral; and when the concentration of hydrogen ions is less than the concentration of hydroxide ions, it is alkaline.

[0056] The pH value chart for water uses numbers to indicate that a pH value of 7 indicates a neutral solution, a pH value of 7 indicates an acidic solution, and a pH value greater than 7 indicates an alkaline solution. The normal pH range for water is between 6.5 and 8.5, with an optimal pH value of 7.5. Studies have shown that if water is too acidic, drinking it may lead to poor blood circulation, thus affecting the normal function of the visual system; if water is too alkaline, drinking it may lead to decreased immunity and increase the risk of diseases such as kidney stones. In this embodiment, the neutralization component 6 controls the pH value of the water at the outlet component 5, ensuring that the pH value of the outlet water meets the requirements and preventing harm to the human body from unsuitable pH levels.

[0057] In a specific embodiment, such as Figure 5 and Figure 6 As shown, the neutralization component 6 includes a first water pH acquisition unit 61, a second water pH acquisition unit 62, and a third water pH acquisition unit 63. The first water pH acquisition unit 61 is located at the inlet component 4 to detect the pH value of the inlet water, the second water pH acquisition unit 62 is located at the outlet component 5 to detect the pH value of the outlet water, and the third water pH acquisition unit 63 is located at the condensate outlet unit 22 to detect the pH value of the condensate.

[0058] The first water quality pH acquisition unit 61, the second water quality pH acquisition unit 62, and the third water quality pH acquisition unit 63 are all pH detectors, which can directly detect the pH of the water at the corresponding location.

[0059] In the specific implementation process, the pH value of the water outlet from the water heater is acquired in real time through the second water quality pH acquisition unit 62. 出 When the pH 出 pH value relative to the preset standard pH value 标准 When the amounts are unequal, the opening of the one-way flow regulating valve 23 is adjusted to control the mixing amount of the condensate from the condenser heat exchanger 2 and the primary heat exchange outlet water from the condenser heat exchanger; specifically, the pH value of the water entering the water heater is acquired in real time through the first water quality pH acquisition unit 61. 进 And the pH value of the condensate discharged from the condensate outlet unit is detected by the third water quality pH acquisition unit 63. 凝 Then based on pH 进 and pH 凝 Adjust the opening of the one-way flow regulating valve 23 to make the pH 进 and pH 凝 pH obtained after neutralization 出 With the pH 标准 equal.

[0060] More specifically, for example, the preset standard pH value. 标准 The pH value ranges from 6.5 to 8.5. The second water quality pH acquisition unit 62 acquires the pH value of the water outlet from the water heater in real time. 出 When the pH is less than 6.5, the amount of condensate participating in the mixing is reduced by decreasing the opening of the one-way flow regulating valve 23; conversely, when the pH is increased, the second water quality pH acquisition unit 62 acquires the pH value of the water outlet from the water heater in real time. 出 When the value is greater than 8.5, the amount of condensate participating in the mixing is increased by increasing the opening of the one-way flow regulating valve 23.

[0061] In a specific embodiment, the neutralization component 6 further includes a controller 64, which is connected to the first water quality pH acquisition unit 61, the second water quality pH acquisition unit 62, the third water quality pH acquisition unit 63, and the one-way flow regulating valve 23, respectively. The controller 64 can control the opening of the one-way flow regulating valve 23 according to the pH value of the effluent, thereby adjusting the pH value of the effluent obtained by neutralizing the pH value of the condensate and the pH value of the influent.

[0062] The water from the water heater provided in this embodiment is primarily for bathing and not for drinking. Therefore, the pH value of the water from the water heater is... 出The pH value ranges from 6.5 to 8.5. The second water quality pH acquisition unit 62 acquires the pH value of the water outlet from the water heater in real time. 出 When the pH is less than 6.5, feedback will be sent to controller 64. Controller 64 will control the one-way flow regulating valve 23 to reduce or even close the water supply from the condensate outlet pipe 222 to the secondary heat exchange inlet water unit 31 until the pH reaches 6.5. 出 The pH value is between 6.5 and 8.5. The second water quality pH acquisition unit 62 acquires the pH value of the water outlet from the water heater in real time. 出 When the pH value is greater than 8.5, feedback will be sent to controller 64. Controller 64 will control one-way flow regulating valve 23 to increase the water supply from condensate outlet pipe 222 to secondary heat exchange inlet water unit 31 until the pH value is reached. 出 Between 6.5 and 8.5.

[0063] In a specific embodiment, such as Figure 1 As shown, the water heater also includes a fan 7 disposed inside the housing 1. The fan 7 is located between the condensing heat exchanger 2 and the main heat exchanger 3, and is used to allow the flue gas generated by the main heat exchanger 3 to enter the condensing heat exchanger 2.

[0064] In a specific embodiment, such as Figure 1 As shown, the water heater also includes a burner 8 for heating the main heat exchanger 3, and the burner 8 is disposed inside the housing 1.

[0065] Specifically, in actual operation, when cold water enters the water heater, the burner 8 is turned on and ignited, and the fan 7 is working. During operation, the high-temperature flue gas drawn out by the fan 7 enters the condenser heat exchanger 2, and the condensate produced by the condenser heat exchanger 2 enters the main heat exchanger 3 through the condensate outlet unit 22 to achieve recycling.

[0066] The water flow direction of the water heater provided in this embodiment is as follows:

[0067] Water inlet connector 41, water inlet pipe 42, primary water inlet unit 24, condenser heat exchanger 2, primary heat exchange outlet water unit 21, secondary heat exchange inlet water unit 31, main heat exchanger 3, secondary outlet water unit 32, outlet pipe 52, outlet connector 51, i.e., along Figure 1 The direction is A1--A2--B2.

[0068] The working principle of the water heater provided in this embodiment is as follows:

[0069] Tap water enters the main heat exchanger 3 through the condenser heat exchanger 2 via the inlet connector 41. The air inlet valve opens, and the burner 8 is ignited. The tap water entering the main heat exchanger 3 is heated and flows out through the outlet pipe 52. The high-temperature flue gas generated by the burner 8 heating the main heat exchanger 3 flows into the condenser heat exchanger 2 and heats the condenser tubes. Thus, the tap water flowing through the condenser tubes is preheated. The preheated tap water requires less heat to be heated by the main heat exchanger 3, thereby improving thermal efficiency. During use, condensate generated by the temperature difference between the inside and outside of the heat exchange tubes in the condenser heat exchanger 2 will settle at the bottom. In this embodiment, the condensate outlet pipe 222 and the primary heat exchange outlet unit 21 of the condenser heat exchanger are connected unidirectionally, with the condensate flowing from B1 to A2. Figure 1 As shown, the condensate generated by the condenser heat exchanger 2 is mixed with the water in the primary heat exchange outlet water unit 21 and then enters the main heat exchanger 3 through the secondary heat exchange inlet water unit 31, where it is recycled and reused.

[0070] The water heater provided in this embodiment can automatically clean up condensate, greatly improve thermal efficiency, recycle condensate, reduce pollution, and increase water utilization.

[0071] Example 2

[0072] This embodiment provides a water heater control method, such as... Figure 7 As shown, the water heater control method is used to control the water heater described in Embodiment 1. The water heater has a one-way flow regulating valve between its condensate outlet unit and primary heat exchange outlet unit. The water heater control method includes:

[0073] S1, Real-time acquisition of the pH value of the water outlet from the water heater. 出 ;

[0074] S2, determine pH 出 pH value relative to the preset standard pH value 标准 The relationship between them;

[0075] S3, when the pH 出 With the pH 标准 When the amounts are not equal, adjust the opening of the one-way flow regulating valve to control the mixing amount of condensate from the condensing heat exchanger and the primary heat exchange outlet water from the condensing heat exchanger.

[0076] Specifically, the pH value of the water outlet from the water heater is acquired in real time through the second water quality pH acquisition unit. 出 When the pH 出 pH value relative to the preset standard pH value 标准 When the pH values ​​are unequal, adjust the opening of the one-way flow regulating valve to control the mixing amount of condensate from the condenser heat exchanger and the primary heat exchange outlet water from the condenser heat exchanger; when the pH value is...出 pH value relative to the preset standard pH value 标准 When the values ​​are equal, the current opening degree of the one-way flow regulating valve remains unchanged.

[0077] In a specific embodiment, in step S3, when the pH 出 With the pH 标准 When the values ​​are unequal, the opening of the one-way flow regulating valve is controlled as follows:

[0078] S31, real-time acquisition of the pH value of the water entering the water heater. 进 And the pH value of the condensate discharged from the condensate outlet unit. 凝 ;

[0079] S32, based on the pH of S31 进 and pH 凝 Adjust the opening of the one-way flow control valve to adjust the pH. 进 and pH 凝 pH obtained after neutralization 出 With the pH 标准 equal.

[0080] Specifically, the pH value of the water entering the water heater is acquired in real time through the first water quality pH acquisition unit. 进 The pH value of the condensate discharged from the condensate outlet unit is detected by the third water quality pH acquisition unit. 凝 Then based on pH 进 and pH 凝 Adjust the opening of the one-way flow control valve to adjust the pH. 进 and pH 凝 pH obtained after neutralization 出 With the pH 标准 Equal. For example: when the pH value of the water outlet from the water heater is obtained in real time. 出 When the pH is less than 6.5, the amount of condensate participating in the mixing is reduced by decreasing the opening of the one-way flow regulating valve; conversely, the amount of condensate participating in the mixing is reduced by real-time acquisition of the pH value of the water outlet from the water heater. 出 When the value is greater than 8.5, the amount of condensate participating in the mixing can be increased by increasing the opening of the one-way flow regulating valve.

[0081] This embodiment uses a method of diluting and neutralizing condensate to recycle and reuse it, which not only effectively solves the pollution problem caused by condensate discharge but also saves water resources.

[0082] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous technical features can be freely combined and superimposed.

[0083] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A water heater, characterized in that, The water heater includes a shell and a condenser heat exchanger and a main heat exchanger located inside the shell. The condenser heat exchanger has a primary heat exchange outlet unit and a condensate outlet unit. The main heat exchanger has a secondary heat exchange inlet unit. The primary heat exchange outlet unit is connected to the secondary heat exchange inlet unit. One end of the condensate outlet unit is used to collect the condensate from the condenser heat exchanger, and the other end of the condensate outlet unit is connected to the primary heat exchange outlet unit. The other end of the condensate outlet unit is connected to the primary heat exchange outlet unit by a one-way flow regulating valve. The water heater also includes an inlet assembly and an outlet assembly. The inlet assembly is connected to the primary inlet unit of the condensing heat exchanger, and the outlet assembly is connected to the secondary outlet unit of the main heat exchanger. The water heater also includes a neutralization component located inside the housing. The neutralization component is connected to the inlet water component, the outlet water component, and the condensate outlet unit, respectively, and is used to control the pH value of the water at the outlet water component. The neutralization component includes a first water quality pH acquisition unit, a second water quality pH acquisition unit, and a third water quality pH acquisition unit. The first water quality pH acquisition unit is installed at the inlet component to detect the pH value of the inlet water. The second water quality pH acquisition unit is installed at the outlet component to detect the pH value of the outlet water. The third water quality pH acquisition unit is installed at the condensate outlet unit to detect the pH value of the condensate. The neutralization component also includes a controller, which is connected to the first water quality pH acquisition unit, the second water quality pH acquisition unit, the third water quality pH acquisition unit, and the one-way flow regulating valve, respectively. The controller can control the opening of the one-way flow regulating valve according to the pH value of the effluent, thereby adjusting the pH value of the effluent obtained by neutralizing the pH value of the condensate and the pH value of the influent.

2. The water heater according to claim 1, characterized in that, The water heater also includes a fan installed inside the casing. The fan is located between the condensing heat exchanger and the main heat exchanger, and is used to allow the flue gas generated by the main heat exchanger to enter the condensing heat exchanger.

3. The water heater according to claim 1, characterized in that, The water heater also includes a burner for heating the main heat exchanger, the burner being disposed within the housing.

4. A water heater control method, characterized in that, The water heater control method is used to control the water heater according to any one of claims 1-3, wherein the water heater has a one-way flow regulating valve between the condensate outlet unit and the primary heat exchange outlet unit, and the water heater control method includes: S1, Real-time acquisition of the pH value of the water outlet from the water heater. 出 ; S2, determine pH 出 pH value relative to the preset standard pH value 标准 The relationship between them; S3, when the pH 出 With the pH 标准 When the amounts are not equal, adjust the opening of the one-way flow regulating valve to control the mixing amount of condensate from the condensing heat exchanger and the primary heat exchange outlet water from the condensing heat exchanger.

5. The water heater control method according to claim 4, characterized in that, In S3, when the pH 出 With the pH 标准 When the values ​​are unequal, the opening of the one-way flow regulating valve is controlled as follows: S31, real-time acquisition of the pH value of the water entering the water heater. 进 And the pH value of the condensate discharged from the condensate outlet unit. 凝 ; S32, based on the pH of S31 进 and pH 凝 Adjust the opening of the one-way flow control valve to adjust the pH. 进 and pH 凝 pH obtained after neutralization 出 With the pH 标准 equal.

Images