Waterway anti-freezing control method and device and computer equipment

Abstract

The invention relates to a waterway anti-freezing control method and device and computer equipment. The control method is applied to the gas water heater, and the gas water heater comprises a fan and an anti-backflow air sheet. The control method comprises the following steps: acquiring a wind pressure value above the anti-backflow wind blade in real time; when the air pressure value above the anti-backflow air sheet is positive, the internal temperature below the anti-backflow air sheet and the temperature of the environment where the gas water heater is located are obtained; and when the internal temperature is smaller than or equal to the first set value and the environment temperature is larger than or equal to the second set value, the fan is started for freezing prevention. According to the waterway anti-freezing control method, under the conditions that the air pressure above the anti-backflow air sheet is positive, the internal temperature below the anti-backflow air sheet is too low, and the temperature difference between the internal temperature and the environment temperature where the gas water heater is located is large, the draught fan is started for anti-freezing, and the air pressure value above the anti-backflow air sheet is kept in a non-positive state; the phenomenon that outdoor cold air continues to enter the gas water heater, and consequently an internal water path is frozen can be eradicated.

Description

Technical Field

[0001] The invention relates to the field of gas water heaters, and in particular to a control method and a control device for preventing water circuits from freezing, and a computer device. 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 achieve the purpose of preparing hot water.

[0003] In the cold winter in the north, there is a large temperature difference between indoors and outdoors. The cold air outside enters the gas water heater through the exhaust port, which can easily freeze the pipes of the gas water heater.

[0004] In order to solve the above problem, the patent document with patent number 201911244475.4 discloses an antifreeze gas water heater and a control method using the same. The control method controls the start of the heating component according to the temperature outside the exhaust pipe, and uses the heating component to heat the inside of the exhaust pipe to prevent cold air from entering the gas water heater from the exhaust pipe. This control method has hysteresis. When the external wind pressure is too high, the heat of the heating element at the smoke pipe is limited, and the air entering from the exhaust port is still cold, and the antifreeze effect is unstable.

[0005] Patent document No. 202410492007.3 discloses an antifreeze control method and control device thereof, and a gas water heater. The control method controls the operation of the internal circulation water circuit according to the water temperature detection results and the ambient temperature detection results of the internal circulation water circuit, thereby achieving antifreeze. In this control method, when detecting the water circuit temperature, the antifreeze start time is related to the detection temperature position. The temperature difference at each position of the water circuit is large. When the water tank begins to freeze, the temperature at the detection point does not reach the antifreeze action temperature, and the antifreeze effect is unstable.

[0006] In view of this, it is indeed necessary to provide a technical solution to the above problems. Summary of the invention

[0007] The embodiments of the present invention provide a control method and a control device for antifreezing a water circuit, and a computer device, aiming to solve the technical problem in the prior art that the antifreezing effect of a water circuit of a gas water heater in cold climates is unstable.

[0008] In a first aspect, an embodiment of the present invention provides a water channel antifreeze control method, which is applied to a gas water heater, wherein the gas water heater includes a fan and an anti-backflow air blade; the anti-backflow air blade is arranged at a smoke outlet of the fan; the control method includes:

[0009] Obtain the wind pressure value above the anti-backflow air blade in real time;

[0010] When the wind pressure value above the backflow prevention air piece is positive, the internal temperature below the backflow prevention air piece and the ambient temperature of the gas water heater are obtained;

[0011] When the internal temperature is less than or equal to the first set value A, and the ambient temperature is greater than or equal to the second set value B, the fan is started for antifreeze, so that the wind pressure value is maintained in a non-positive state.

[0012] In some embodiments, after the step of starting the fan for antifreeze, the step further includes:

[0013] periodically obtaining the internal temperature;

[0014] When the internal temperature is greater than or equal to the third set value C, the fan is controlled to stop running.

[0015] In some embodiments, the step of periodically acquiring the internal temperature further includes:

[0016] When the internal temperature is lower than the third set value C, the fan is controlled to maintain the current speed.

[0017] In some embodiments, the step of starting the fan for antifreeze and keeping the wind pressure value in a non-positive state specifically includes:

[0018] Step S1, start the fan and run it at an initial speed for a first set time;

[0019] Step S2, determining whether the wind pressure value is positive; if so, proceeding to step S3; if not, controlling the fan to maintain the current speed;

[0020] Step S3, running at a speed one gear higher than that of the previous step for a second set time;

[0021] Step S4, determine whether the wind pressure value is positive; if so, return to step S3; if not, control the fan to maintain the current speed.

[0022] In some embodiments, after the step of obtaining the wind pressure value above the anti-backflow wind sheet in real time, the step further includes:

[0023] When the wind pressure value above the backflow prevention air piece is non-positive, the gas water heater is controlled to enter the standby state.

[0024] In some embodiments, after the step of obtaining the internal temperature below the anti-backflow air piece and the ambient temperature of the gas water heater, the step further includes:

[0025] When the internal temperature is less than or equal to the first set value A, and the ambient temperature is less than the second set value B, the heating element of the gas water heater is started to heat and prevent freezing.

[0026] In some embodiments, the value range of the first setting value A is 0°C to 5°C; the value range of the second setting value B is 10°C to 25°C; the value range of the third setting value C is C=B-3°C.

[0027] In a second aspect, an embodiment of the present invention further provides a water channel antifreeze control device, which is applied to a gas water heater, wherein the gas water heater comprises a fan and an anti-backflow wind blade; the anti-backflow wind blade is arranged at a smoke outlet of the fan; the control device comprises:

[0028] The wind pressure acquisition module is used to obtain the wind pressure value above the anti-backflow wind blade in real time;

[0029] A temperature acquisition module, used to acquire the internal temperature below the anti-backflow air piece and the ambient temperature of the gas water heater when the wind pressure value above the anti-backflow air piece is positive;

[0030] The fan control module starts the fan for antifreeze when the internal temperature is less than or equal to the first set value A and the ambient temperature is greater than or equal to the second set value B, so that the wind pressure value remains in a non-positive state.

[0031] In a third aspect, an embodiment of the present invention further provides a computer device, which includes a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the above-mentioned water channel antifreeze control method is implemented.

[0032] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, wherein the storage medium stores a computer program, and the computer program, when executed by a processor, can implement the above-mentioned water channel antifreeze control method.

[0033] The embodiment of the present invention provides a control method for antifreeze of water channels and a control device and computer equipment thereof. The control method includes: obtaining the wind pressure value above the anti-backflow wind blade in real time; when the wind pressure value above the anti-backflow wind blade is positive, obtaining the internal temperature below the anti-backflow wind blade and the ambient temperature of the gas water heater; when the internal temperature is less than or equal to the first setting value A, and the ambient temperature is greater than or equal to the second setting value B, the fan is started for antifreeze. In the embodiment of the present invention, when the wind pressure above the anti-backflow wind blade is positive, the internal temperature below the anti-backflow wind blade is too low (less than or equal to the first setting value A), and the ambient temperature of the gas water heater is greater than or equal to the second setting value B, that is, when the temperature difference between the internal temperature and the ambient temperature is large, the fan is started for antifreeze, and the wind pressure value above the anti-backflow wind blade is kept in a non-positive state, so that the phenomenon of freezing of the internal water channel of the gas water heater caused by the cold air outside continuing to enter the gas water heater can be effectively prevented, and the antifreeze effect of the water channel is stable, which is suitable for scenes with large temperature difference between indoor and outdoor in cold winter. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0036] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0037] Figure 1 A schematic diagram of the structure of a gas water heater to which the water circuit antifreeze control method provided in an embodiment of the present invention is applied;

[0038] Figure 2 A schematic flow chart of a method for controlling waterway antifreeze provided in one embodiment of the present invention;

[0039] Figure 3 A schematic flow chart of a waterway antifreeze control method provided by another embodiment of the present invention;

[0040] Figure 4 A schematic diagram of a sub-flow chart of a waterway antifreeze control method provided by another embodiment of the present invention;

[0041] Figure 5 A schematic flow chart of a waterway antifreeze control method provided by another embodiment of the present invention;

[0042] Figure 6 A schematic flow chart of a waterway antifreeze control method provided by another embodiment of the present invention;

[0043] Figure 7 A schematic flow chart of a waterway antifreeze control method provided by another embodiment of the present invention;

[0044] Figure 8 A schematic block diagram of a control device for preventing water circuits from freezing provided in one embodiment of the present invention.

[0045] Fig. 9 A schematic block diagram of a waterway antifreeze control device provided by another embodiment of the present invention;

[0046] Fig.10A schematic block diagram of a waterway antifreeze control device provided by another embodiment of the present invention;

[0047] Fig.11 A schematic block diagram of a fan control unit of a waterway antifreeze control device provided by another embodiment of the present invention;

[0048] Fig.12 A schematic block diagram of a waterway antifreeze control device provided by another embodiment of the present invention;

[0049] Fig.13 A schematic block diagram of a waterway antifreeze control device provided by another embodiment of the present invention;

[0050] Fig.14 A schematic block diagram of a computer device provided by the present invention. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0053] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0054] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0055] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0056] As used in this specification and the appended claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0057] In order to solve the technical problem in the prior art that the antifreeze effect of the water circuit of an indoor gas water heater in cold climates is unstable, the present invention provides a control method for antifreeze of the water circuit, which can effectively prevent the phenomenon that the water circuit inside the gas water heater is frozen due to the entry of outdoor cold air into the gas water heater, and has a good antifreeze effect on the water circuit.

[0058] The embodiment of the present invention provides a water circuit antifreeze control method, which is applied to a gas water heater. Figure 1 , Figure 1 1 is a schematic diagram of the structure of the gas water heater provided by the present invention. The gas water heater 100 comprises a fan 101 and an anti-backflow air blade 102; the anti-backflow air blade 102 is arranged at the smoke outlet of the fan 101. Figure 2 , Figure 2 1 is a flow chart of a control method for waterway antifreeze provided by an embodiment of the present invention. The control method for waterway antifreeze includes:

[0059] Step S110, obtaining the wind pressure value above the anti-backflow air blade in real time.

[0060] The anti-backflow wind blade 102 of the gas water heater 100 provided in the present invention is installed at the smoke outlet of the fan 101, and the smoke is discharged normally from the smoke outlet during the operation of the fan 101. When the fan 101 stops running, the anti-backflow wind blade is closed under the action of gravity, that is, the smoke outlet is closed. Since there is a gap between the anti-backflow wind blade 102 and the smoke outlet, when the outdoor wind pressure is large, some outdoor air will enter the gas water heater 100 through the gap. The wind pressure value above the anti-backflow wind blade 102 is the outdoor wind pressure value. When the outdoor wind pressure value is greater than zero, the outdoor air will enter the gas water heater 100 through the gap between the anti-backflow wind blade 102 and the smoke outlet. When the outdoor wind pressure value is equal to or less than zero, the outdoor air will not enter the gas water heater 100 through the gap between the anti-backflow wind blade 102 and the smoke outlet. This step obtains the wind pressure value above the backflow wind blade 102 in real time to confirm whether the outdoor air has entered the gas water heater 100.

[0061] Step S120: When the wind pressure value above the backflow prevention air piece is positive, the internal temperature below the backflow prevention air piece and the ambient temperature of the gas water heater are obtained.

[0062] In this step, when the wind pressure value above the anti-backflow wind blade 102 is positive, it indicates that outdoor air is entering the gas water heater 100 through the gap between the anti-backflow wind blade 102 and the smoke outlet. At this time, it is necessary to confirm the internal temperature below the anti-backflow wind blade 102 and the ambient temperature of the gas water heater to confirm whether the water channel inside the gas water heater 100 will be frozen in the current and subsequent situations.

[0063] Step S130: When the internal temperature is less than or equal to the first set value A, and the ambient temperature is greater than or equal to the second set value B, the fan is started for anti-freezing, so that the wind pressure value is maintained in a non-positive state.

[0064] In this step, the value range of the first set value A is: 0℃~5℃, as known, set 0℃, 1℃, 2℃, 3℃, 4℃, or 5℃, preferably 5℃. The value range of the second set value B is: 10℃~25℃, as known, set 10℃, 12℃, 15℃, 18℃, 20℃, 23℃ or 5℃, preferably 15℃. The internal temperature is less than or equal to the first set value A, and the ambient temperature is greater than or equal to the second set value B. In this state, if the outdoor cold air continues to enter the gas water heater 100, the internal water channel of the gas water heater 100 is easy to be frozen; at this time, the fan 101 needs to be started immediately for antifreeze to ensure that the wind pressure value is in a non-positive state, that is, to ensure that the outdoor cold air does not enter the gas water heater 100.

[0065] This embodiment starts the fan 101 for anti-freezing when the wind pressure value above the anti-backflow wind blade 102 is positive, the internal temperature is less than or equal to the first set value A, and the ambient temperature is greater than or equal to the second set value B, so that the wind pressure value is maintained in a non-positive state. This can effectively prevent the phenomenon of freezing of the internal water channel of the gas water heater 100 due to the continued entry of outdoor cold air into the gas water heater. The water channel antifreeze effect is stable, and the embodiment is suitable for scenes with large indoor and outdoor temperature differences in cold winter.

[0066] In one embodiment, if Figure 3 As shown, the step S130 may include steps S131-

[0067] S134.

[0068] Step S131, start the fan and run it at the initial speed for a first set time;

[0069] Step S132, determine whether the wind pressure value is positive; if so, proceed to step S133; if not, control the fan to maintain the current speed.

[0070] In this step, when the fan 101 is started, it runs at the initial gear speed for the first set time, wherein the first set time ranges from 20 seconds to 60 seconds, such as 20 seconds, 25 seconds, 30 seconds, 35 seconds, 40 seconds, 45 seconds, 50 seconds, 55 seconds, and 60 seconds, and can be set according to actual needs. If the wind pressure value is positive after the fan 101 is started and runs at the initial gear speed for the first set time, it indicates that there is still outdoor cold air entering the gas water heater 100 at this time, which means that the speed of the fan 101 is too low at this time, and the speed gear of the fan 101 needs to be increased. When the wind pressure value is non-positive, that is, the wind pressure value is zero or negative, it indicates that no outdoor cold air enters the gas water heater 100 at this time, which means that the speed of the fan 101 is moderate at this time, and the fan 101 can be kept running at the current speed gear.

[0071] Step S133, running at a speed one gear higher than that of the previous step for a second set time.

[0072] Step S134, determine whether the wind pressure value is positive; if so, return to step S133; if not, control the fan to maintain the current speed.

[0073] When the wind pressure value obtained in the previous step is positive and the speed gear of the fan 101 needs to be increased, it is necessary to control the gas water heater 100 to increase one gear on the basis of the previous step, that is, to run at a speed one gear higher than the previous step. The second setting time ranges from 20 seconds to 60 seconds, such as 20 seconds, 25 seconds, 30 seconds, 35 seconds, 40 seconds, 45 seconds, 50 seconds, 55 seconds, and 60 seconds, and can be set according to actual needs. If the wind pressure value is not positive after running the second setting time by increasing one speed gear, it indicates that the cold air outside will not enter the gas water heater 100 at this time, and the fan 100 can be controlled to maintain the current speed and continue to run. If the wind pressure value is still positive after running for the second set time by increasing the speed level, it indicates that the outdoor air will still enter the gas water heater 100. At this time, it is necessary to return to execute S133, that is, to increase the speed level of the fan 101 again until the wind pressure value is non-positive, and then control the fan 101 to maintain the current speed.

[0074] See also Figure 4 In some embodiments, the step S130 further includes:

[0075] Step S140: periodically obtain the internal temperature.

[0076] Step S150: When the internal temperature is greater than or equal to a third set value C, the fan is controlled to stop running.

[0077] The value of the third set value C in this step needs to be determined according to the value of the second set value B. The third set value C should be slightly smaller than the second set value B. In this embodiment, the third set value C=B-3°C. In this step, when the internal temperature is greater than or equal to the third set value C, the fan 101 is controlled to stop running, which can reduce energy loss while ensuring that the internal water path of the gas water heater 100 is not frozen.

[0078] In some implementations, see Figure 5 , after step S140, the following processing is also included:

[0079] Step S160: When the internal temperature is less than a third set value C, the fan is controlled to maintain the current speed.

[0080] In this step, when the internal temperature is less than the third set value C, the fan is controlled to maintain the current speed, which can ensure that the outdoor cold air is prevented from entering the gas water heater 100 to prevent the water channel from freezing.

[0081] See also Figure 6 In some embodiments, the step S110 further includes:

[0082] Step S170: When the wind pressure value above the backflow prevention air blade is non-positive, the gas water heater is controlled to enter a standby state.

[0083] When the wind pressure value above the anti-backflow wind blade 102 is non-positive, it indicates that the outdoor cold air will not enter the gas water heater 100. At this time, the water channel will not be frozen due to the outdoor cold air entering the gas water heater 100. Therefore, the gas water heater 100 can be controlled to enter the standby state.

[0084] From the above, it can be seen that in the water channel antifreeze control method provided by the present invention, when the internal temperature is less than or equal to the first set value A, and the ambient temperature is greater than or equal to the second set value B, the fan is started for antifreeze, and the wind pressure value is kept in a non-positive state. This method is suitable for scenes with a large indoor and outdoor temperature difference in cold winter, that is, it is suitable for scenes with low internal temperature and a large temperature difference between the internal temperature and the ambient temperature. For example, it is suitable for scenes where a gas water heater is installed in an indoor environment with heating measures in the cold winter in the north.

[0085] See also Figure 7 In some embodiments, the step S120 further includes:

[0086] Step S180: When the internal temperature is less than or equal to the set value A, and the ambient temperature is less than the second set value B, the heating element of the gas water heater is started to heat and prevent freezing.

[0087] The starting of the heating element of the gas water heater 100 for antifreeze protection specifically includes the following processing: starting the heating element to heat and stopping the heating element to heat; when the internal temperature is lower than the first set value A, controlling the heating element to start heating.

[0088] In the waterway antifreeze control method provided by the present invention, when the internal temperature is less than or equal to the set value A, and the ambient temperature is less than the second set value B, the heating element of the gas water heater is started to heat and prevent freezing. This method is suitable for the gas water heater to be installed outdoors, such as on a balcony, or installed in an indoor environment without heating; that is, it is suitable for the scene where the internal temperature is low and the temperature difference between the internal temperature and the ambient temperature is not large. For example, it is suitable for the scene where the gas water heater is installed in an indoor environment without heating measures in the cold winter in the north, and the scene where the gas water heater is installed in an outdoor environment such as a balcony in the cold winter in the north.

[0089] Figure 8 is a schematic block diagram of a waterway antifreeze control device provided by an embodiment of the present invention. Figure 8 As shown, corresponding to the above water circuit antifreeze control method, the water circuit antifreeze control device includes a unit for executing the above water circuit antifreeze control method, and the control device can be configured in a desktop computer, a tablet computer, a laptop computer, and other terminals. Specifically, the water circuit antifreeze control device is applied to the gas water heater 100, see Figure 1 The gas water heater 100 includes a fan 101 and an anti-backflow fan 102; the anti-backflow fan 102 is arranged at the smoke outlet of the fan 101. Figure 5 The control device 200 for water channel antifreeze includes: a wind pressure acquisition unit 210, a temperature acquisition unit 220, and a fan control unit 230. The wind pressure acquisition unit 210 is used to obtain the wind pressure value above the anti-backflow wind blade 102 in real time. The temperature acquisition unit 220 is used to obtain the internal temperature below the anti-backflow wind blade 102 and the ambient temperature of the gas water heater 100 when the wind pressure value above the anti-backflow wind blade 102 is positive. The fan control unit 230 starts the fan 101 for antifreeze when the internal temperature is less than or equal to the first set value A, and the ambient temperature is greater than or equal to the second set value B, so that the wind pressure value remains in a non-positive state.

[0090] The control device 200 for preventing the water circuit from freezing in this embodiment starts the fan 101 for preventing freezing when the wind pressure value above the anti-backflow wind blade 102 is positive, the internal temperature is less than or equal to the first set value A, and the ambient temperature is greater than or equal to the second set value B, so as to keep the wind pressure value in a non-positive state. This can effectively prevent the freezing of the water circuit inside the gas water heater 100 due to the continued entry of cold outdoor air into the gas water heater. The water circuit antifreeze effect is stable and is suitable for scenes with large temperature differences between indoor and outdoor in cold winter.

[0091] Fig. 9 FIG. 1 is a schematic block diagram of a waterway antifreeze control device provided by another embodiment of the present invention. Fig. 9 As shown, the waterway antifreeze control device 200 of this embodiment is based on the above embodiment and adds a first temperature acquisition unit 240 and a first fan control unit 250. The first temperature acquisition unit 240 is used to periodically acquire the internal temperature after the fan control unit 130 starts the fan 101 for antifreeze. The first fan control unit 250 is used to control the fan 101 to stop running when the internal temperature is greater than or equal to the third set value C.

[0092] Fig.10 FIG. 1 is a schematic block diagram of a waterway antifreeze control device provided by another embodiment of the present invention. Fig.10 As shown, the waterway antifreeze control device 200 of this embodiment is based on the above embodiment and adds a second fan control unit 260. The second fan control unit 260 is used to control the fan 101 to maintain the current speed when the internal temperature is less than the third set value C.

[0093] In one embodiment, if Fig.11 As shown, the fan control unit 230 includes a fan start subunit 231, a wind pressure judgment subunit 232, and a speed adjustment subunit 233. Among them, the fan start subunit 231 is used to start the fan 101 to run at the initial gear speed for the first set time. The wind pressure judgment subunit 232 is used to judge the wind pressure value after the fan 101 runs at the initial gear speed for the first set time, and to judge the wind pressure value after the fan 101 runs at a speed one gear higher than the previous step for the second set time. The speed adjustment subunit 233 is used to control the fan 101 to maintain the current speed when the wind pressure value after the fan 101 runs at the initial gear speed for the first set time is non-positive, and to control the fan 101 to maintain the current speed when the wind pressure value after the fan 101 runs at a speed one gear higher than the previous step for the second set time is non-positive.

[0094] Fig.12 FIG. 1 is a schematic block diagram of a waterway antifreeze control device provided by another embodiment of the present invention. Fig.12As shown, the water channel antifreeze control device 200 of this embodiment is based on the above embodiment and adds a standby control unit 270. The standby control unit 270 is used to control the gas water heater to enter the standby state when the wind pressure value above the anti-backflow wind piece is non-positive after the wind pressure acquisition unit 210 acquires the wind pressure value above the anti-backflow wind piece in real time.

[0095] Fig.13 FIG. 1 is a schematic block diagram of a waterway antifreeze control device provided by another embodiment of the present invention. Fig.13 As shown, the water channel antifreeze control device 200 of this embodiment is based on the above embodiment and adds a heating antifreeze control unit 280. The heating antifreeze control unit 280 is used to start the heating element heating antifreeze of the gas water heater 100 after the temperature acquisition unit 220 acquires the internal temperature below the anti-backflow air blade 102 and the ambient temperature of the gas water heater 100, and the internal temperature is less than or equal to the first set value A, and the ambient temperature is less than the second set value B.

[0096] In one embodiment, the value range of the first setting value A is 0°C to 5°C; the value range of the second setting value B is 10°C to 25°C; the value range of the third setting value C is C=B-3°C.

[0097] The waterway antifreeze control device 200 provided by the present invention starts the heating and antifreeze mode of the heating element of the gas water heater 100 when the internal temperature is less than or equal to the set value A, and the ambient temperature is less than the second set value B. This mode is applicable to the scenario where the gas water heater 100 is installed outdoors, such as on a balcony, or installed in an indoor environment without heating; that is, it is applicable to the scenario where the internal temperature is low and the temperature difference between the internal temperature and the ambient temperature is not large. For example, it is applicable to the scenario where the gas water heater 100 is installed in an indoor environment without heating measures in the cold winter in the north, and the scenario where the gas water heater 100 is installed in an outdoor environment such as a balcony in the cold winter in the north.

[0098] It should be noted that technicians in the relevant field can clearly understand that the specific implementation process of the above-mentioned water channel antifreeze control device 200 and each unit can refer to the corresponding description in the aforementioned water channel antifreeze control method embodiment, and for the convenience and brevity of description, it will not be repeated here.

[0099] like Fig.14 As shown, an embodiment of the present invention provides a computer device, including a processor 111, a communication interface 112, a memory 113 and a communication bus 114, wherein the processor 111, the communication interface 112, and the memory 113 communicate with each other through the communication bus 114, and the memory 113 is used to store computer programs;

[0100] In one embodiment of the present invention, the processor 111 is used to implement the water channel antifreeze control method provided by any one of the aforementioned method embodiments when executing the program stored in the memory 113.

[0101] It can be understood by those skilled in the art that all or part of the processes in the method for implementing the above embodiment can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a storage medium, which is a computer-readable storage medium. The computer program is executed by at least one processor in the computer system to implement the process steps of the embodiment of the water circuit antifreeze control method.

[0102] Therefore, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the water channel antifreeze control method provided in any of the aforementioned method embodiments are implemented.

[0103] The storage medium is a physical, non-transient storage medium, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a magnetic disk, or an optical disk, etc., which can store program codes. The computer-readable storage medium can be non-volatile or volatile.

[0104] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0105] In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of each unit is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0106] The steps in the method of the embodiment of the present invention can be adjusted in order, combined and deleted according to actual needs. The units in the device of the embodiment of the present invention can be combined, divided and deleted according to actual needs. In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0107] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, terminal, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention.

[0108] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0109] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0110] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A waterway antifreeze control method, characterized in that: Applied to a gas water heater, the gas water heater comprises a fan and an anti-backflow air blade; the anti-backflow air blade is arranged at the smoke outlet of the fan; the control method comprises: Obtain the wind pressure value above the anti-backflow air blade in real time; When the wind pressure value above the backflow prevention air piece is positive, the internal temperature below the backflow prevention air piece and the ambient temperature of the gas water heater are obtained; When the internal temperature is less than or equal to the first set value A, and the ambient temperature is greater than or equal to the second set value B, the fan is started for antifreeze, so that the wind pressure value is maintained in a non-positive state.

2. The waterway antifreeze control method according to claim 1, characterized in that: After the step of starting the fan for antifreeze, the following steps are further included: periodically obtaining the internal temperature; When the internal temperature is greater than or equal to the third set value C, the fan is controlled to stop running.

3. The waterway antifreeze control method according to claim 2, characterized in that: After the step of periodically acquiring the internal temperature, the following step is further included: When the internal temperature is lower than the third set value C, the fan is controlled to maintain the current speed.

4. The waterway antifreeze control method according to claim 1, characterized in that: The step of starting the fan for antifreeze and keeping the wind pressure value in a non-positive state specifically includes: Step S1, start the fan and run it at an initial speed for a first set time; Step S2, determining whether the wind pressure value is positive; if so, proceeding to step S3; if not, controlling the fan to maintain the current speed; Step S3, running at a speed one gear higher than that of the previous step for a second set time; Step S4, determine whether the wind pressure value is positive; if so, return to step S3; if not, control the fan to maintain the current speed.

5. The waterway antifreeze control method according to any one of claims 1 to 4, characterized in that: After the step of obtaining the wind pressure value above the anti-backflow air piece in real time, the method further includes: When the wind pressure value above the backflow prevention air piece is non-positive, the gas water heater is controlled to enter the standby state.

6. The waterway antifreeze control method according to any one of claims 1 to 4, characterized in that: After the step of obtaining the internal temperature below the anti-backflow air piece and the ambient temperature of the gas water heater, the method further includes: When the internal temperature is less than or equal to the first set value A, and the ambient temperature is less than the second set value B, the heating element of the gas water heater is started to heat and prevent freezing.

7. The waterway antifreeze control method according to claim 6, characterized in that: The value range of the first setting value A is 0°C to 5°C; the value range of the second setting value B is 10°C to 25°C; the value range of the third setting value C is C=B-3°C.

8. A waterway antifreeze control device, characterized in that: Applied to a gas water heater, the gas water heater comprises a fan and an anti-backflow air blade; the anti-backflow air blade is arranged at the smoke outlet of the fan; the control device comprises: The wind pressure acquisition module is used to obtain the wind pressure value above the anti-backflow wind blade in real time; A temperature acquisition module, used to acquire the internal temperature below the anti-backflow air piece and the ambient temperature of the gas water heater when the wind pressure value above the anti-backflow air piece is positive; The fan control module starts the fan for antifreeze when the internal temperature is less than or equal to the first set value A and the ambient temperature is greater than or equal to the second set value B, so that the wind pressure value remains in a non-positive state.

9. A computer device, characterized in that: The computer device includes a memory and a processor, the memory stores a computer program, and the processor implements the water channel antifreeze control method according to any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by the processor, the control method for water channel antifreezing according to any one of claims 1 to 7 can be implemented.

Images