Anti-freezing device of solar water heater

Abstract

The utility model belongs to the technical field of anti-freezing devices, and particularly relates to a solar water heater anti-freezing device which comprises a solar water heater body and an external liquid storage barrel, a temperature sensor is installed in a water tank of the solar water heater body, and the top of the external liquid storage barrel is fixedly connected with an external discharging pipeline. The external liquid storage cylinder is located on the side lower portion of the water tank of the solar water heater body, the other end of the discharging pipeline is fixedly connected to the bottom of the water tank of the solar water heater body, and a first control valve is installed on the discharging pipeline. According to the solar water heater, when the temperature sensor detects that the water temperature in the water tank of the solar water heater body is too low, the temperature sensor transmits a signal to the PLC, then the first control valve is controlled to be opened, and then water in the water tank of the solar water heater body flows into the external liquid storage barrel through the discharging pipe, so that the purpose of emptying the water in the water tank is achieved; therefore, the solar water heater is prevented from being frozen.

Description

Technical Field

[0001] The utility model relates to an antifreeze device, in particular to an antifreeze device for a solar water heater. Background Art

[0002] Solar water heaters heat water from low temperature to high temperature to meet people's hot water needs in life and production. Solar water heaters are divided into vacuum tube solar water heaters and flat plate solar water heaters according to their structural form, with vacuum tube solar water heaters being the main type.

[0003] When an existing solar water heater is turned off, there will be hot water in its water tank that cannot flow. When the temperature reaches below zero, this hot water will gradually cool down and form ice, making it impossible for the solar water heater to discharge water. To this end, the solution is usually to drain all the water in the solar water heater the day before, or to wrap the hot water pipe with a thermal insulation layer. However, both methods have some problems: first, after draining the hot water, the solar water heater cannot be used the next day; second, the outlet pipe is connected to the shower head pipe in the bathroom, so the outlet pipe is long, which makes it more difficult to wrap the outlet pipe with a thermal insulation layer.

[0004] In view of this, the present application designs a solar water heater antifreeze device. Utility Model Content

[0005] The main purpose of the present disclosure is to provide a solar water heater antifreeze device to effectively solve the problems raised by the inventor in the above background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0007] A solar water heater antifreeze device includes a solar water heater main body and an external liquid storage cylinder, a temperature sensor is installed inside the water tank of the solar water heater main body, the top of the external liquid storage cylinder is fixedly connected to an external discharge pipe, and the external liquid storage cylinder is located at the side and lower part of the water tank of the solar water heater main body, the other end of the external discharge pipe is fixedly connected to the bottom of the water tank of the solar water heater main body, and a first control valve is installed on the external discharge pipe, and a liquid flow mechanism is provided between the external liquid storage cylinder and the water tank of the solar water heater main body.

[0008] Preferably, a PLC controller is fixedly installed on the outside of the water tank of the solar water heater body, and the temperature sensor and the first control valve are both electrically connected to the PLC controller.

[0009] Preferably, the liquid flow mechanism includes an external mounting plate, a circulating liquid pump, a first circulating pipe and a second circulating pipe. The external mounting plate is fixedly mounted on the outside of the water tank of the solar water heater body, the circulating liquid pump is fixedly mounted on the external mounting plate, and the input end of the circulating liquid pump is fixedly connected to the first circulating pipe, the other end of the first circulating pipe is fixedly connected to the lower end of the side of the external liquid storage cylinder, the output end of the circulating liquid pump is fixedly connected to the second circulating pipe, and the other end of the second circulating pipe is fixedly connected to the upper end of the water tank of the solar water heater body.

[0010] Preferably, a second control valve is installed on the first circulation pipe, and the second control valve is electrically connected to the PLC controller.

[0011] Preferably, a liquid level sensor is installed in the water tank of the solar water heater body, and the liquid level sensor and the circulating liquid pump are both electrically connected to the PLC controller.

[0012] Preferably, the liquid level sensor is located at one fifth of the depth of the water tank of the solar water heater body, and the volume of the external liquid storage cylinder is half of the volume of the water tank of the solar water heater body.

[0013] In view of this, compared with the prior art, the beneficial effects of the present invention are:

[0014] (1) In the present application, when the temperature sensor detects that the water temperature in the water tank of the solar water heater body is too low, it transmits a signal to the PLC controller, which then controls the first control valve to open, and then the water in the water tank of the solar water heater body flows into the external liquid storage cylinder through the external discharge pipe to achieve the purpose of emptying the water in the water tank, thereby avoiding the solar water heater from freezing and being damaged.

[0015] (2) In the present application, the liquid level sensor monitors the water level in the water tank. If the water level is lower than one-fifth, the water in the water tank can be drained. If the water level is higher than one-fifth, the first control valve and the second control valve are opened, and the circulating liquid pump is operated to make the water in the water tank flow into the external liquid storage cylinder, and then transported to the water tank of the solar water heater through the circulating liquid pump, so that the water in the water tank is in a flowing state, thereby reducing the occurrence of freezing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure shows a top view of the structure of the antifreeze device for solar water heater provided by the utility model;

[0017] Figure 2 Shown Figure 1 Schematic diagram of the local structure in;

[0018] Figure 3 Shown is a working flow chart of the solar water heater antifreeze device provided by the utility model.

[0019] icon:

[0020] 1 - solar water heater body; 2 - external liquid storage cylinder; 3 - temperature sensor; 4 - external discharge pipeline; 5 - first control valve; 6 - PLC controller; 7 - liquid level sensor; 8 - external mounting plate; 9 - circulating liquid pump; 10 - first circulating pipe; 11 - second circulating pipe; 12 - second control valve. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] Please refer to Figure 1-3 The present application provides the following embodiments:

[0023] A solar water heater anti-freezing device, comprising a solar water heater body 1 and an external liquid storage cylinder 2, a temperature sensor 3 is installed inside the water tank of the solar water heater body 1, an external discharge pipeline 4 is fixedly connected to the top of the external liquid storage cylinder 2, and the external liquid storage cylinder 2 is located below the side of the water tank of the solar water heater body 1, the other end of the external discharge pipeline 4 is fixedly connected to the bottom of the water tank of the solar water heater body 1, and a first control valve 5 is installed on the external discharge pipeline 4, and a liquid flow mechanism is arranged between the external liquid storage cylinder 2 and the water tank of the solar water heater body 1.

[0024] Specifically, a PLC controller 6 is fixedly installed on the outside of the water tank of the solar water heater body 1, and the temperature sensor 3 and the first control valve 5 are electrically connected to the PLC controller 6.

[0025] Specifically, the liquid flow mechanism comprises an external mounting plate 8, a circulating liquid pump 9, a first circulating pipe 10 and a second circulating pipe 11, the external mounting plate 8 is fixedly installed on the outside of the water tank of the solar water heater body 1, the circulating liquid pump 9 is fixedly installed on the external mounting plate 8, the input end of the circulating liquid pump 9 is fixedly connected with the first circulating pipe 10, the other end of the first circulating pipe 10 is fixedly connected to the lower end of the side of the external liquid storage cylinder 2, the output end of the circulating liquid pump 9 is fixedly connected with the second circulating pipe 11, and the other end of the second circulating pipe 11 is fixedly connected to the upper end of the water tank of the solar water heater body 1, a second control valve 12 is installed on the first circulating pipe 10, and the second control valve 12 is electrically connected to the PLC controller 6.

[0026] Specifically, a liquid level sensor 7 is installed in the water tank of the solar water heater main body 1. The liquid level sensor 7 and the circulating liquid pump 9 are electrically connected to the PLC controller 6. The liquid level sensor 7 is located at one-fifth of the depth of the water tank of the solar water heater main body 1, and the volume of the external liquid storage cylinder 2 is half of the water tank volume of the solar water heater main body 1.

[0027] The specific implementation of this embodiment is as follows: when the temperature sensor 3 detects that the water temperature in the water tank of the solar water heater body 1 is too low, it transmits a signal to the PLC controller 6, which then controls the first control valve 5 to open, and then the water in the water tank of the solar water heater body 1 flows into the external liquid storage cylinder 2 through the external discharge pipe 4, so as to achieve the purpose of emptying the water in the water tank, thereby preventing the solar water heater from being frozen and damaged;

[0028] The liquid level sensor 7 monitors the water level in the water tank. If the water level is lower than one-fifth, the water in the water tank can be drained. If the water level is higher than one-fifth, the first control valve 5 and the second control valve 12 are opened, and the circulating liquid pump 9 works to make the water in the water tank flow into the external liquid storage cylinder 2, and then transported to the water tank of the solar water heater through the circulating liquid pump 9, so that the water in the water tank is in a flowing state, thereby reducing the occurrence of freezing.

[0029] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0030] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A solar water heater antifreeze device, characterized by: The solar water heater comprises a main body (1) and an external liquid storage cylinder (2), wherein a temperature sensor (3) is installed inside the water tank of the main body (1), an external discharge pipe (4) is fixedly connected to the top of the external liquid storage cylinder (2), and the external liquid storage cylinder (2) is located at the lower side of the water tank of the main body (1), the other end of the external discharge pipe (4) is fixedly connected to the bottom of the water tank of the main body (1), and a first control valve (5) is installed on the external discharge pipe (4), and a liquid flow mechanism is provided between the external liquid storage cylinder (2) and the water tank of the main body (1).

2. A solar water heater antifreeze device according to claim 1, characterized in that: A PLC controller (6) is fixedly installed on the outside of the water tank of the solar water heater body (1), and the temperature sensor (3) and the first control valve (5) are both electrically connected to the PLC controller (6).

3. The antifreeze device for a solar water heater according to claim 2, characterized in that: The liquid flow mechanism comprises an outer mounting plate (8), a circulating liquid pump (9), a first circulating pipe (10) and a second circulating pipe (11); the outer mounting plate (8) is fixedly mounted on the outside of a water tank of a solar water heater body (1); the circulating liquid pump (9) is fixedly mounted on the outer mounting plate (8); the input end of the circulating liquid pump (9) is fixedly connected to the first circulating pipe (10); the other end of the first circulating pipe (10) is fixedly connected to the lower end of the side of an external liquid storage cylinder (2); the output end of the circulating liquid pump (9) is fixedly connected to the second circulating pipe (11); and the other end of the second circulating pipe (11) is fixedly connected to the upper end of the water tank of the solar water heater body (1).

4. The antifreeze device for a solar water heater according to claim 3, characterized in that: A second control valve (12) is installed on the first circulation pipe (10), and the second control valve (12) is electrically connected to the PLC controller (6).

5. The antifreeze device for a solar water heater according to claim 4, characterized in that: A liquid level sensor (7) is installed in the water tank of the solar water heater body (1), and the liquid level sensor (7) and the circulating liquid pump (9) are both electrically connected to the PLC controller (6).

6. The antifreeze device for a solar water heater according to claim 5, characterized in that: The liquid level sensor (7) is located at one fifth of the depth of the water tank of the solar water heater body (1). The volume of the external liquid storage cylinder (2) is half the volume of the water tank of the solar water heater body (1).

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