Pipeline cleaning device for air source heat pump water heater

Abstract

A pipeline cleaning device for an air source heat pump water heater comprises a storage box, a circulating box, a recycling box and a controller. The storage box is used for storing high-concentration cleaning liquid, a liquid outlet is formed in the bottom of the storage box, and a first valve used for controlling the liquid outlet to be opened or closed is fixedly arranged in the liquid outlet; the circulating box is communicated with the liquid outlet, the circulating box is used for receiving the high-concentration cleaning liquid and diluting the high-concentration cleaning liquid to obtain low-concentration cleaning liquid, the circulating box is connected with the air source heat pump water heater through a circulating pump, and a PH tester used for detecting the PH of the low-concentration cleaning liquid is connected to the circulating box; the recycling box is used for recycling waste liquid flowing out of the air source heat pump water heater, a filtering assembly is detachably arranged in the recycling box and used for filtering scale in the waste liquid, the recycling box is communicated with the circulating box, a second valve is arranged at the communication position, and the effect of removing the scale in the air source heat pump water heater is improved.

Description

Technical Field

[0001] This utility model relates to the field of air source heat pump water heater cleaning technology, specifically a pipe cleaning device for air source heat pump water heaters. Background Technology

[0002] The applicant currently uses an air source heat pump water heater to provide hot water for employees' bathing. Due to water quality issues, a large amount of scale easily accumulates inside the air source heat pump water heater, severely clogging the pipes and causing the air source heat pump water heater to malfunction, thus affecting the normal water supply in the mine's bathhouse.

[0003] To remove limescale from the air source heat pump water heater, the applicant prepared a weakly acidic solution by mixing edible citric acid with clean water. A circulation pump was then used to circulate this acidic solution through the pipes of the air source heat pump water heater for cleaning and descaling. However, as the acidic solution circulated, its descaling effect on the air source heat pump water heater gradually decreased. There are two main reasons for this:

[0004] 1) The acidity of weak acid water gradually decreases, and its ability to corrode scale weakens;

[0005] 2) The scale that accumulates in the weak acid water gradually increases, which can easily clog the pipes and cause the weak acid water to flow poorly. Utility Model Content

[0006] To address the problem that existing technologies suffer from reduced descaling efficiency due to the circulation of weak acidic water, this invention provides a pipe cleaning device for air source heat pump water heaters, which improves the removal of scale from air source heat pump water heaters.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a pipe cleaning device for an air source heat pump water heater, comprising a storage tank, a circulation tank, a recycling tank and a controller;

[0008] The storage tank is used to store high-concentration cleaning solution. The bottom of the storage tank has a liquid outlet, and a first valve is fixedly installed in the liquid outlet to control the opening or closing of the liquid outlet.

[0009] The circulation tank is connected to the liquid outlet. The circulation tank is used to receive high-concentration cleaning solution and dilute the high-concentration cleaning solution to obtain low-concentration cleaning solution. The circulation tank is connected to the air source heat pump water heater through the circulation pump. A pH meter for detecting the pH of the low-concentration cleaning solution is connected to the circulation tank.

[0010] The recycling tank is used to recycle waste liquid flowing out of the air source heat pump water heater. The recycling tank is equipped with a detachable filter assembly, which is used to filter out scale in the waste liquid. The recycling tank is connected to the circulation tank, and a second valve is provided at the connection point.

[0011] The first valve, circulating pump, pH meter, and second valve are all connected to the controller.

[0012] As a further optimization of the pipe cleaning device for an air source heat pump water heater, the filter assembly includes a frame and a filter screen fixedly disposed inside the frame. The filter screen is configured as a V-shape with the tip pointing downwards, and a receiving area for receiving the scale is formed between the two sides of the filter screen.

[0013] As a further optimization of the pipe cleaning device for an air source heat pump water heater, the following features: both sides of the frame are fixedly provided with locking blocks, each locking block including a contact part and an anti-detachment part that are perpendicular to each other; the top of the recycling box has two receiving slots for accommodating the anti-detachment parts, which extend into the receiving slots.

[0014] As a further optimization of the pipe cleaning device for an air source heat pump water heater, the following features: a guide tube is fixedly installed inside the recycling tank, a buoyancy ball is installed inside the guide tube, and an induction switch for sensing the position of the buoyancy ball is also embedded on the recycling tank. The induction switch is connected to the controller, and the controller controls the second valve to open or close according to the state of the induction switch.

[0015] As a further optimization of the pipe cleaning device for an air source heat pump water heater, the buoyancy ball is connected to the inner wall of the guide tube by a connecting rope.

[0016] As a further optimization of the pipeline cleaning device for an air source heat pump water heater, the recovery box is fixedly equipped with a protective cover, and a heating pipe for heating the waste liquid is fixedly installed inside the protective cover.

[0017] As a further optimization of the pipe cleaning device for an air source heat pump water heater, the storage box is fixedly installed on the top of the circulation box, and the circulation box has an outlet channel communicating with the outlet, and the inner diameter of the outlet channel is larger than the diameter of the outlet.

[0018] As a further optimization of the pipeline cleaning device for an air source heat pump water heater, the recovery box and the circulation box are fixedly connected, and both the recovery box and the circulation box are equipped with wheels for rotation.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1) By detachably installing the filter assembly in the recycling bin, the filter assembly can retain the scale in the waste liquid on the filter assembly, thus avoiding the poor cleaning effect of low-concentration cleaning solution mixed with scale.

[0021] 2) This utility model sets up a storage box for storing high-concentration cleaning solution. The bottom of the storage box has an outlet, and a first valve is fixedly installed in the outlet to control the opening or closing of the outlet. The circulation box is connected to the outlet. When the pH value of the low-concentration cleaning solution in the circulation box is higher than the predetermined value, the first valve is opened to allow the high-concentration cleaning solution to enter the circulation box so that the pH value of the low-concentration cleaning solution meets the requirements and ensures the cleaning effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a magnified view of a portion of point A;

[0024] Figure 3 This is a magnified view of part B.

[0025] The markings in the diagram are: 1. Recycling bin, 2. Circulation bin, 3. Storage bin, 4. Air source heat pump water heater, 5. Drain pipe, 6. Inlet pipe, 7. pH meter, 8. Water pressure gauge, 9. Circulation pump, 10. First valve, 11. Liquid outlet channel, 12. Filter assembly, 13. Locking block, 1301. Contact part, 1302. Anti-detachment part, 14. Heating element, 15. Induction switch, 16. Buoyancy ball, 17. Connecting rope, 18. Guide tube, 19. Second valve, 20. Wheel, 21. Receiving area, 22. Protective cover. Detailed Implementation

[0026] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. Parts not described or disclosed in detail in the following embodiments of this utility model should be understood as prior art known or should be known by those skilled in the art, such as the model of air source heat pump water heater 4, the model of drain pipe 5 and water inlet pipe 6, how drain pipe 5 and water inlet pipe 6 are connected, the model and working principle of pH tester 7, the model of water pressure gauge 8, the model and working principle of circulating pump 9, the model of first valve 10, the model of heating tube 14 and how heating tube 14 heats, the model of induction switch 15, the model of second valve 19, etc.

[0027] Example 1

[0028] A pipe cleaning device for an air source heat pump water heater, such as Figures 1-3As shown, the system includes a storage tank 3, a circulation tank 2, a recovery tank 1, and a controller. The storage tank 3 stores a high-concentration cleaning solution, which is a highly concentrated acidic solution. The storage tank 3 is made of a corrosion-resistant material, which is a conventional technology in this field and will not be described in detail here. The bottom of the storage tank 3 has an outlet, and a first valve 10 is fixedly installed in the outlet to control its opening and closing. The circulation tank 2 is connected to the outlet and is used to receive the high-concentration cleaning solution and dilute it to obtain a low-concentration cleaning solution. The circulation tank 2 is connected to the air source heat pump water heater 4 via a circulation pump 9, which is connected to the inlet pipe 6 of the air source heat pump water heater 4. A pH meter 7 is connected to the circulation tank 2 to detect the pH of the low-concentration cleaning solution. The preset pH value of the low-concentration cleaning solution is set according to actual needs. The recovery tank 1 is used to recover the waste liquid flowing out of the air source heat pump water heater 4. The drain pipe 5 of the air source heat pump water heater 4 sends the waste liquid into the recovery tank 1. A filter assembly 12 is detachably installed in the recovery tank 1. The filter assembly 12 is used to filter scale in the waste liquid, and the scale remains on the filter assembly 12. The recovery tank 1 is connected to the circulation tank 2, and a second valve 19 is installed at the connection point. When the appropriate time is reached, the controller controls the second valve 19 to start. At this time, the waste liquid enters the circulation tank 2 for the next circulation. The first valve 10, the circulation pump 9, the pH meter 7, and the second valve 19 are all connected to the controller. How the controller controls the first valve 10, the circulation pump 9, the pH meter 7, and the second valve 19, as well as the model of the controller, are conventional existing technologies in the field and will not be described in detail here. When the pH meter 7 tests the pH value of the low-concentration cleaning solution and it reaches the required value, the controller controls the first valve 10 to close.

[0029] The above are the basic embodiments of this utility model. Further improvements, optimizations, and limitations can be made based on the above to obtain the following embodiments:

[0030] Example 2

[0031] This embodiment is an improvement on Embodiment 1. Its main structure is the same as Embodiment 1, but the improvement lies in the following: the filter assembly 12 includes a frame and a filter screen fixedly disposed inside the frame. The filter screen is V-shaped with its tip pointing downwards, and a receiving area 21 for collecting scale is formed between the two sides of the filter screen. Scale accumulates in the receiving area 21, allowing workers to directly remove the filter assembly 12 and pour the scale out. To facilitate the installation of the filter assembly 12, locking blocks 13 are fixedly disposed on both sides of the frame. Each locking block 13 includes a perpendicular contact portion 1301 and an anti-detachment portion 1302. The top of the recycling bin 1 has two receiving grooves for accommodating the anti-detachment portions 1302, which extend into the receiving grooves. When scale removal is needed, the frame can be simply locked onto the top of the recycling bin 1.

[0032] Example 3

[0033] This embodiment is an improvement on Embodiment 1. Its main structure is the same as Embodiment 1, but the improvement lies in the following: Since it is an acidic solution, a protective cover 22 is fixedly installed inside the recovery tank 1 to protect the heating tube 14. The heating tube 14, used for heating the waste liquid, is fixedly installed inside the protective cover 22. The heating tube 14 heats the waste liquid, increasing the temperature of the liquid flowing into the circulation tank 2, thereby improving the scale removal effect of the low-concentration cleaning solution. To ensure the heating effect of the heating tube 14 on the waste liquid, a guide tube 18 is fixedly installed inside the recovery tank 1. A buoyancy ball 16 is installed inside the guide tube 18. A sensor switch 15 for sensing the position of the buoyancy ball 16 is also embedded in the recovery tank 1. The sensor switch 15 is connected to the controller, and the controller controls the second valve 19 to open or close according to the state of the sensor switch 15. The water level of the waste liquid in the recovery tank 1 rises continuously until the buoyancy ball 16 reaches the sensor switch 15. At this point, with the cooperation of the sensor switch 15, the buoyancy ball 16, and the controller, the second valve 19 opens, allowing the waste liquid, which has been heated for a certain period of time, to flow into the circulation tank 2. It should be noted that initially, the circulation tank 2 contains unused, low-concentration cleaning fluid, but after circulation, the low-concentration cleaning fluid in the circulation tank 2 comes from the waste liquid in the recovery tank 1. The second valve 19 opens to allow the waste liquid to flow into the circulation tank 2 for the next cycle. When the buoyancy ball 16 is no longer in contact with the sensor switch 15, the controller closes the second valve 19. To prevent instability in the position of the buoyancy ball 16, the buoyancy ball 16 is connected to the inner wall of the guide tube 18 by a connecting rope 17.

[0034] Example 4

[0035] This embodiment is an improvement on Embodiment 1. Its main structure is the same as Embodiment 1, but the improvement lies in the following: to facilitate the entry of high-concentration cleaning solution from the storage tank 3 into the circulation tank 2, the storage tank 3 is fixedly installed on the top of the circulation tank 2. The circulation tank 2 has an outlet channel 11 communicating with the outlet, and the inner diameter of the outlet channel 11 is larger than the diameter of the outlet, allowing the high-concentration acidic solution to flow smoothly through the outlet channel 11 when it exits the outlet.

[0036] Example 5

[0037] This embodiment is an improvement on embodiment 1. Its main structure is the same as that of embodiment 1. The improvement is that the recycling box 1 and the circulation box 2 are fixedly connected. Both the bottom of the recycling box 1 and the circulation box 2 are equipped with rotatable wheels 20. During cleaning, the recycling box 1 and the circulation box 2 can move together without additional handling.

[0038] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pipe cleaning device for an air source heat pump water heater, characterized in that: It includes a storage box (3), a circulation box (2), a recycling box (1), and a controller; The storage tank (3) is used to store high-concentration cleaning solution. The bottom of the storage tank (3) is provided with a liquid outlet, and a first valve (10) is fixedly installed in the liquid outlet to control the opening or closing of the liquid outlet. The circulation tank (2) is connected to the liquid outlet. The circulation tank (2) is used to receive high-concentration cleaning liquid and dilute the high-concentration cleaning liquid to obtain low-concentration cleaning liquid. The circulation tank (2) is connected to the air source heat pump water heater (4) through the circulation pump (9). A pH tester (7) for detecting the pH of low-concentration cleaning liquid is connected to the circulation tank (2). The recycling tank (1) is used to recycle the waste liquid flowing out of the air source heat pump water heater (4). A filter assembly (12) is detachably installed in the recycling tank (1). The filter assembly (12) is used to filter the scale in the waste liquid. The recycling tank (1) is connected to the circulation tank (2), and a second valve (19) is installed at the connection position. The first valve (10), the circulating pump (9), the pH meter (7), and the second valve (19) are all connected to the controller.

2. The pipe cleaning device for an air source heat pump water heater as described in claim 1, characterized in that: The filter assembly (12) includes a frame and a filter screen fixedly disposed inside the frame. The filter screen is configured as a V-shape with the tip pointing downwards, and a receiving area (21) for receiving the scale is formed between the two sides of the filter screen.

3. The pipe cleaning device for an air source heat pump water heater as described in claim 2, characterized in that: Both sides of the frame are fixedly provided with a locking block (13). The locking block (13) includes a contact part (1301) and an anti-detachment part (1302) that are perpendicular to each other. The top of the recycling box (1) has two receiving slots for accommodating the anti-detachment part (1302), and the anti-detachment part (1302) extends into the receiving slot.

4. The pipe cleaning device for an air source heat pump water heater as described in claim 1, characterized in that: A guide tube (18) is fixedly installed inside the recycling bin (1), and a buoyancy ball (16) is installed inside the guide tube (18). A sensor switch (15) for sensing the position of the buoyancy ball (16) is also embedded in the recycling bin (1). The sensor switch (15) is connected to the controller, and the controller controls the second valve (19) to open or close according to the state of the sensor switch (15).

5. The pipe cleaning device for an air source heat pump water heater as described in claim 4, characterized in that: The buoyancy ball (16) is connected to the inner wall of the guide tube (18) by a connecting rope (17).

6. The pipe cleaning device for an air source heat pump water heater as described in claim 1, characterized in that: The recycling bin (1) is fixedly equipped with a protective cover (22), and a heating pipe (14) for heating the waste liquid is fixedly installed inside the protective cover (22).

7. The pipe cleaning device for an air source heat pump water heater as described in claim 1, characterized in that: The storage box (3) is fixedly installed on the top of the circulation box (2). The circulation box (2) has an outlet channel (11) that communicates with the outlet, and the inner diameter of the outlet channel (11) is larger than the diameter of the outlet.

8. The pipe cleaning device for an air source heat pump water heater as described in claim 1, characterized in that: The recycling bin (1) and the circulation bin (2) are fixedly connected, and wheels (20) are rotatably provided at the bottom of both the recycling bin (1) and the circulation bin (2).

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