Anti-freezing water heater and control method thereof

Abstract

The invention discloses an anti-freezing water heater which comprises a heating assembly, a controller, a water inlet pipe, a smoke exhaust pipe, a temperature sensing piece and a heating body, the temperature sensing piece and the heating body are arranged on the smoke exhaust pipe and / or the water inlet pipe, and temperature information detected by the temperature sensing piece is transmitted to the controller; and the controller is used for controlling the heating piece to heat. Compared with the prior art, the anti-freezing water heater has the advantages that the internal temperature of the water heater can be effectively guaranteed, frost cracking is avoided, the controller controls the heating body to heat the smoke exhaust pipe opening and the water inlet pipe in a targeted mode, and electricity is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas water heater control, and in particular to an antifreeze water heater and a control method thereof. Background Art

[0002] At present, the exhaust of gas water heaters is equipped with anti-backflow devices, but it cannot guarantee complete sealing. In the cold winter, when the cold wind from the outside flows back into the water heater, since the heating element and the antifreeze thermostat are installed on the water tank, there are the following shortcomings:

[0003] 1. The thermostat senses temperature with a lag, and its action condition is that the temperature at the location drops to a certain action temperature, at which time the cold air has passed through the fan to the inside of the water heater.

[0004] 2. Due to cost issues, antifreeze heaters are usually installed in front of or behind the coil and cannot take into account all hot water pipes. If all water heaters need to be taken into account, a very high-power heater is required.

[0005] Therefore, based on the above problems, it is necessary to improve the existing water heater to solve the above problems. Summary of the invention

[0006] In view of the problems existing in the above-mentioned prior art, the present invention provides an antifreeze water heater and a control method thereof, which can effectively ensure the internal temperature of the water heater and avoid freezing and cracking. The controller controls the heating body to heat the smoke exhaust pipe opening and the water inlet pipe in a targeted manner to save electricity.

[0007] In order to solve the above technical problems, the technical solution of the present invention is:

[0008] A freeze-proof water heater comprises a heating component, a controller, a water inlet pipe, a smoke exhaust pipe, a temperature sensing element and a heating body. The temperature sensing element and the heating body are arranged on the smoke exhaust pipe and / or the water inlet pipe, and the temperature information detected by the temperature sensing element is transmitted to the controller, and the heating element is controlled by the controller to perform heating.

[0009] Preferably, the heating assembly comprises a burner, a water tank and a fan which are arranged in sequence, the fan is connected to the smoke exhaust pipe, and the water tank is connected to the water inlet pipe.

[0010] Preferably, the temperature sensing element comprises a first temperature sensing element and a second temperature sensing element, and the heating body comprises a first heating body and a second heating body;

[0011] The first temperature sensing element and the first heating body are arranged at the smoke exhaust port of the smoke exhaust pipe, and the second temperature sensing element and the second heating body are arranged at the water inlet of the water inlet pipe.

[0012] Preferably, the distance between the temperature sensing element and the heating body is greater than 30 mm.

[0013] A control method for the antifreeze water heater, comprising:

[0014] S1. Set the smoke pipe outlet detection temperature and water inlet detection temperature through the controller;

[0015] S2, the controller determines whether to start the first heating element and the second heating element according to the first temperature sensing element and the second temperature sensing element detecting the temperature of the smoke pipe port and the temperature of the water inlet;

[0016] S3, when it is detected that the smoke pipe outlet detection temperature is less than or equal to the smoke pipe outlet operating temperature and / or the water inlet detection temperature is less than or equal to the water inlet operating temperature, the first heating element and the second heating element at the corresponding position are started to heat;

[0017] S4. When the heated temperature is met, turn off the first heating element and the second heating element.

[0018] Preferably, in S3, when the smoke pipe outlet detection temperature is less than or equal to the smoke pipe outlet operating temperature, and the water inlet detection temperature is greater than the water inlet operating temperature, the first heating element heats the smoke exhaust pipe;

[0019] When the water inlet detection temperature is less than or equal to the water inlet operating temperature, and the smoke pipe outlet detection temperature is greater than the smoke pipe outlet operating temperature, the second heating element heats the water inlet pipe;

[0020] When the smoke pipe port detection temperature is less than or equal to the smoke pipe port operating temperature, and the water inlet detection temperature is less than or equal to the water inlet operating temperature, the first heating element and the second heating element heat the smoke exhaust pipe and the water inlet respectively.

[0021] Preferably, in S4, the first heating element heats the cold air flowing back into the smoke exhaust pipe, and stops heating when the first temperature sensing element detects that the temperature of the heated air reaches the reset temperature of the smoke exhaust pipe port;

[0022] The second heating element heats the cold water entering the water inlet pipe, and stops heating when the second temperature sensing element detects that the temperature of the heated water reaches the water inlet reset temperature.

[0023] Preferably, in S4, when the smoke pipe outlet detection temperature is greater than the smoke pipe outlet reset temperature, and the water inlet detection temperature is greater than the water inlet action temperature, the first heating element stops heating the smoke exhaust pipe;

[0024] When the water inlet detection temperature is greater than the water inlet reset temperature, and the smoke pipe outlet detection temperature is greater than the smoke pipe outlet action temperature, the second heating element stops heating the water inlet pipe;

[0025] When the smoke pipe port detection temperature is greater than the smoke pipe port reset temperature, and the water inlet detection temperature is greater than the water inlet action temperature, the first heating element and the second heating element stop heating.

[0026] Preferably, the set temperatures of the smoke pipe outlet reset temperature and the water inlet reset temperature are 3°C-5°C higher than the set temperatures of the water inlet action temperature and the smoke pipe outlet action temperature.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] It can effectively ensure the internal temperature of the water heater to avoid freezing and cracking, and the controller controls the heating body to heat the exhaust pipe and the water inlet pipe in a targeted manner to save electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the antifreeze water heater of the present application.

[0030] Figure 2 It is a flow chart of a control method of the present application.

[0031] Description of the accompanying drawings: 1. First temperature sensing element; 2. First heating element; 3. Fan; 4. Water tank; 5. Controller; 6. Second temperature sensing element; 7. Second heating element. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-2 , the specific implementation methods of the present invention are further described in detail to make the technical solution of the present invention easier to understand and grasp.

[0033] In this embodiment, it should be understood that the terms "middle", "upper", "lower", "top", "right side", "end", "front", "back", "middle", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, in this specific embodiment, if the connection or fixing method between components is not specifically described, the connection or fixing method can be through bolt fixing or pin fixing, or pin shaft connection and the like commonly used in the prior art, and therefore, it is not described in detail in this embodiment.

[0035] The following is combined with Figure 1-2This application is described in further detail.

[0036] like Figure 1 As shown, an antifreeze water heater includes a heating component, a controller 5, a water inlet pipe, a smoke exhaust pipe, a temperature sensing element and a heating body. The temperature sensing element and the heating body are arranged on the smoke exhaust pipe and / or the water inlet pipe, and the temperature information detected by the temperature sensing element is transmitted to the controller 5, and the heating element is controlled by the controller 5 to perform heating. The controller 5 controls the first heating body 2 and the second heating body 7 respectively, so that the smoke exhaust pipe and the water inlet pipe are heated more specifically, saving electricity and avoiding waste.

[0037] In this embodiment, the temperature sensing components are respectively arranged on the smoke exhaust pipe and the water inlet pipe.

[0038] In this embodiment, the heating assembly includes a burner, a water tank 4 and a fan 3 which are arranged in sequence. The fan 3 is connected to the smoke exhaust pipe, and the water tank 4 is connected to the water inlet pipe.

[0039] In this embodiment, the temperature sensing element includes a first temperature sensing element 1 and a second temperature sensing element 6, and the heating body includes a first heating body 2 and a second heating body 7;

[0040] The first temperature sensing element 1 and the first heating element 2 are arranged at the smoke outlet of the smoke exhaust pipe, and the second temperature sensing element 6 and the second heating element 7 are arranged at the water inlet of the water inlet pipe. Since the smoke exhaust pipe and the water inlet pipe are the places where the cold source passes first, the technical solution of the present invention heats the place where the cold source passes first, which can effectively ensure the internal temperature of the water heater and avoid freezing and cracking.

[0041] In order to ensure the accuracy of the temperature detected by the temperature sensing element, it is necessary to ensure that a certain distance is maintained between the temperature sensing element and the heating body. Therefore, the distance between the temperature sensing element and the heating body in this embodiment is greater than 30 mm.

[0042] The present invention also relates to a control method for an antifreeze water heater, the main purpose of which is to ensure that the water heater can work normally in a low temperature environment and to prevent ice from forming inside the water heater due to excessively low temperature, thereby affecting the normal use and life of the water heater.

[0043] like Figure 2 As shown, a control method for an antifreeze water heater comprises:

[0044] S1. Set the smoke pipe outlet detection temperature and water inlet detection temperature through the controller;

[0045] S2, the controller determines whether to start the first heating element and the second heating element according to the temperature detected by the first temperature sensing element and the second temperature sensing element at the smoke pipe outlet and the water inlet;

[0046] S3, when it is detected that the smoke pipe outlet detection temperature is ≤ the smoke pipe outlet operating temperature and / or the water inlet detection temperature is ≤ the water inlet operating temperature, the first heating element and the second heating element at the corresponding position are started to heat;

[0047] S4. When the heated temperature is reached, the first heating element and the second heating element are turned off.

[0048] Specifically, in step S3, when the smoke pipe outlet detection temperature is less than or equal to the smoke pipe outlet operating temperature, and the water inlet detection temperature is greater than the water inlet operating temperature, the first heating element heats the smoke exhaust pipe;

[0049] When the water inlet detection temperature is less than or equal to the water inlet operating temperature, and the smoke pipe outlet detection temperature is greater than the smoke pipe outlet operating temperature, the second heating element heats the water inlet pipe;

[0050] When the smoke pipe outlet detection temperature is ≤ the smoke pipe outlet operating temperature, and the water inlet detection temperature is ≤ the water inlet operating temperature, the first heating element and the second heating element heat the smoke exhaust pipe and the water inlet respectively.

[0051] In step S4, when the first heating element heats the cold air flowing back into the smoke exhaust pipe, the first temperature sensing element detects the temperature of the heated air. Once the temperature reaches the reset temperature of the smoke exhaust pipe, the controller stops the heating of the first heating element.

[0052] Similarly, after the second heating element heats the cold water entering the water inlet pipe, the second temperature sensing element will detect the temperature of the heated water. Once the water inlet reset temperature is reached, the controller will stop the heating of the second heating element.

[0053] In order to ensure that the first heating body can fully heat the cold air and to ensure that the second heating body can fully heat the water, in this embodiment, the smoke pipe mouth reset temperature and the water inlet reset temperature are set to be 3°C-5°C higher than the water inlet action temperature and the smoke pipe mouth action temperature.

[0054] Step S4 is described in detail. When the smoke pipe port detection temperature is greater than the smoke pipe port reset temperature, and the water inlet detection temperature is greater than the water inlet action temperature, the controller instructs the first heating element to stop heating the smoke exhaust pipe.

[0055] When the water inlet detection temperature is greater than the water inlet reset temperature, and the smoke pipe outlet detection temperature is greater than the smoke pipe outlet action temperature, the controller will instruct the second heating element to stop heating the water inlet pipe;

[0056] When the smoke pipe port detection temperature is greater than the smoke pipe port reset temperature, and the water inlet detection temperature is greater than the water inlet action temperature, the controller will instruct the first heating element and the second heating element to stop heating at the same time.

[0057] The technical effects of the present invention are mainly reflected in the following aspects:

[0058] It can effectively ensure the internal temperature of the water heater to avoid freezing and cracking, and the controller controls the heating body to heat the exhaust pipe and the water inlet pipe in a targeted manner to save electricity.

[0059] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. An antifreeze water heater, characterized in that: The invention comprises a heating component, a controller, a water inlet pipe, a smoke exhaust pipe, a temperature sensing element and a heating body. The temperature sensing element and the heating body are arranged on the smoke exhaust pipe and / or the water inlet pipe, and the temperature information detected by the temperature sensing element is transmitted to the controller, and the heating element is controlled by the controller to perform heating.

2. The antifreeze water heater according to claim 1, characterized in that: The heating component comprises a burner, a water tank and a fan which are arranged in sequence. The fan is connected to the smoke exhaust pipe, and the water tank is connected to the water inlet pipe.

3. The antifreeze water heater according to claim 1, characterized in that: The temperature sensing element includes a first temperature sensing element and a second temperature sensing element, and the heating body includes a first heating body and a second heating body; The first temperature sensing element and the first heating body are arranged at the smoke exhaust port of the smoke exhaust pipe, and the second temperature sensing element and the second heating body are arranged at the water inlet of the water inlet pipe.

4. The antifreeze water heater according to claim 1, characterized in that: The distance between the temperature sensing element and the heating body is greater than 30 mm.

5. A control method for an antifreeze water heater as claimed in claim 3, characterized in that: include: S1. Set the smoke pipe outlet detection temperature and water inlet detection temperature through the controller; S2, the controller determines whether to start the first heating element and the second heating element according to the first temperature sensing element and the second temperature sensing element detecting the temperature of the smoke pipe port and the temperature of the water inlet; S3, when it is detected that the smoke pipe outlet detection temperature is less than or equal to the smoke pipe outlet operating temperature and / or the water inlet detection temperature is less than or equal to the water inlet operating temperature, the first heating element and the second heating element at the corresponding position are started to heat; S4. When the heated temperature is met, turn off the first heating element and the second heating element.

6. The control method of the antifreeze water heater according to claim 5, characterized in that: In S3, when the smoke pipe outlet detection temperature is less than or equal to the smoke pipe outlet operating temperature, and the water inlet detection temperature is greater than the water inlet operating temperature, the first heating element heats the smoke exhaust pipe; When the water inlet detection temperature is less than or equal to the water inlet operating temperature, and the smoke pipe outlet detection temperature is greater than the smoke pipe outlet operating temperature, the second heating element heats the water inlet pipe; When the smoke pipe port detection temperature is less than or equal to the smoke pipe port operating temperature, and the water inlet detection temperature is less than or equal to the water inlet operating temperature, the first heating element and the second heating element heat the smoke exhaust pipe and the water inlet respectively.

7. The control method of the antifreeze water heater according to claim 5, characterized in that: In S4, the first heating element heats the cold air flowing back into the smoke exhaust pipe, and stops heating when the first temperature sensing element detects that the temperature of the heated air reaches the reset temperature of the smoke exhaust pipe outlet; The second heating element heats the cold water entering the water inlet pipe, and stops heating when the second temperature sensing element detects that the temperature of the heated water reaches the water inlet reset temperature.

8. The control method of the antifreeze water heater according to claim 7, characterized in that: In S4, when the smoke pipe outlet detection temperature is greater than the smoke pipe outlet reset temperature, and the water inlet detection temperature is greater than the water inlet action temperature, the first heating element stops heating the smoke exhaust pipe; When the water inlet detection temperature is greater than the water inlet reset temperature, and the smoke pipe outlet detection temperature is greater than the smoke pipe outlet action temperature, the second heating element stops heating the water inlet pipe; When the smoke pipe port detection temperature is greater than the smoke pipe port reset temperature, and the water inlet detection temperature is greater than the water inlet reset temperature, the first heating element and the second heating element stop heating.

9. The control method of the antifreeze water heater according to claim 7 or 8, characterized in that: The set temperatures of the smoke pipe port reset temperature and the water inlet reset temperature are 3°C-5°C higher than the set temperatures of the water inlet action temperature and the smoke pipe port action temperature.

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