Pressure detection device for energy-saving transformation of central air conditioner

Abstract

The utility model relates to the technical field of water pressure detection, in particular to a pressure detection device for energy-saving transformation of a central air conditioner, which not only can prevent cold and hot water from influencing pressure detection and improve the pressure detection precision, but also can clean water scale and residual impurities generated in the device and further improve the detection precision. Comprising a connecting mechanism; the device further comprises a detection mechanism, an auxiliary mechanism and a cleaning mechanism, the detection mechanism is installed on the connecting mechanism and used for detecting the water pressure, the auxiliary mechanism is installed on the connecting mechanism and used for rechecking the water pressure through air pressure changes, and the cleaning mechanism is installed on the connecting mechanism and used for cleaning impurities and scale in the connecting mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of water pressure detection, in particular to a pressure detection device used for energy-saving transformation of a central air conditioner. Background Art

[0002] The central air conditioning system consists of one or more cold and heat source systems and multiple air conditioning systems. Unlike traditional refrigerant air conditioners, this system centrally processes air to meet comfort requirements and uses the principle of liquid vaporization refrigeration to provide the required cooling capacity for the air conditioning system.

[0003] An existing central air-conditioning pressure detection device, for example, a water pressure detection tool for a central air-conditioning disclosed in the utility model patent with application number 202221330301.7, has a main structure including a detection device, a precision gauge is fixedly installed on the surface of the detection device, a sliding groove is fixedly opened on one side of the precision gauge, a pressure indicator is movably connected inside the sliding groove, a pressure rod is fixedly connected to the bottom end of the pressure indicator, a pressure seat is fixedly connected to the bottom end of the pressure rod, and a spring is movably installed on the top of the pressure seat; when in use, the device is connected to the central air-conditioning with a threaded connecting block, so that after the water pressure of the central air-conditioning passes into the pressure pipe, the water pressure will lift the pressure seat and resist the pressure through the spring, so that the pressure indicator slides in the sliding groove and the pressure is accurately displayed on the precision gauge.

[0004] However, most of the existing pressure detection devices detect cold water pressure. When the air conditioner is heating in winter, the pressure detection may have a large deviation, and various impurities are easily present in the circulating water, affecting the detection accuracy. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a pressure detection device for energy-saving transformation of central air conditioners, which can not only prevent the influence of cold and hot water on pressure detection and improve the pressure detection accuracy, but also clean the scale and residual impurities generated in the device, thereby further improving the detection accuracy.

[0006] The utility model discloses a pressure detection device for energy-saving transformation of a central air conditioner, comprising a connecting mechanism; a detection mechanism, an auxiliary mechanism and a cleaning mechanism, wherein the detection mechanism is installed on the connecting mechanism and detects water pressure, the auxiliary mechanism is installed on the connecting mechanism and re-checks the water pressure through air pressure changes, and the cleaning mechanism is installed on the connecting mechanism and cleans impurities and scale in the connecting mechanism; the connecting mechanism is installed on the circulating water pipeline of the central air conditioner, the circulating water enters the connecting mechanism to lift up the detection mechanism, the detection mechanism detects the circulating water, and at the same time the auxiliary mechanism detects air pressure changes in the connecting mechanism, and assists in testing water pressure changes to improve detection accuracy. After long-term use, scale and residual impurities are easily generated in the connecting mechanism, which are cleaned by the cleaning mechanism.

[0007] Preferably, the connecting mechanism includes a support frame, a detection box, two groups of connecting pipes, two groups of valves and a filter screen, the bottom end of the support frame is connected to the working surface, the bottom end of the detection box is connected to the top end of the support frame, a cavity is provided inside the detection box, the two groups of connecting pipes are respectively installed on the left and right sides of the detection box and are both connected to the inside of the cavity of the detection box, the two groups of valves are respectively installed on the two groups of connecting pipes, and the filter screen is installed in the connecting pipe on the right; the two groups of connecting pipes are connected to the circulating water pipeline, and the circulating water enters the cavity of the detection box from the left connecting pipe, the detection mechanism detects the water pressure, and then the circulating water enters the right connecting pipe through the filter screen and circulates again, and the impurities are filtered and intercepted by setting the filter screen, and the two groups of valves are closed when maintenance and calibration are required.

[0008] Preferably, the detection mechanism includes a sealing cover, a pressure sensor, a display screen, four groups of force guiding rods, four groups of springs, a pressure plate and a sealing ring. The bottom end of the sealing cover is connected to the top end of the detection box, the bottom end of the pressure sensor is connected to the top end of the sealing cover, the display screen is installed on the pressure sensor, the top ends of the four groups of force guiding rods are connected to the bottom end of the sealing cover, the four groups of springs are respectively mounted on the four groups of force guiding rods, the top end of the pressure plate is connected to the bottom ends of the four groups of force guiding rods, and the pressure plate is tangent to the inner wall of the cavity of the detection box, and the top end of the sealing ring is connected to the bottom end of the pressure plate; circulating water enters the cavity of the detection box, and the circulating water pressure is greater than the air pressure to push the pressure plate upward. The sealing ring is set to prevent the circulating water from entering above the pressure plate, and the pressure plate pushes the pressure plate and the sealing ring to shrink. The pressure sensor converts the pressure into an electrical signal and displays it through the display screen. When the water pressure drops, the spring drives the pressure plate to rebound.

[0009] Preferably, the auxiliary mechanism includes a balancing pipe, an exhaust valve, an air pipe and a pressure gauge. The balancing pipe is connected to the interior of the cavity of the detection box and is located above the pressure plate. The exhaust valve is installed on the balancing pipe. The air pipe is connected to the interior of the cavity of the detection box and is located above the pressure plate. The pressure gauge is installed on the air pipe. The pressure plate compresses the air upward, and the air enters the pressure gauge through the air pipe. The pressure gauge detects the gas pressure, and the auxiliary pressure sensor detects the pressure. When maintenance is performed, the exhaust valve can be opened to balance the pressure inside and outside the cavity of the detection box through the balancing pipe.

[0010] Preferably, the barometer also has a temperature and pressure compensation function; in order to prevent the hot water from heating the air above the pressure plate and causing the barometer pressure to change, a barometer with a temperature and pressure compensation function is selected to improve the detection accuracy.

[0011] Preferably, the cleaning mechanism includes a motor, a reducer, a rotating shaft, a scraper, a drain pipe and a drain valve. The bottom end of the motor is connected to the bottom end of the detection box, the bottom end of the reducer is connected to the bottom end of the detection box, the rotating shaft is rotatably installed inside the cavity of the detection box and is longitudinally connected to the reducer, the scraper is installed on the rotating shaft, the top end of the drain pipe is connected to the bottom end of the detection box, and the drain valve is installed on the drain pipe; after long-term use, start the motor, the motor drives the rotating shaft to rotate through the reducer, the rotating shaft drives the scraper to rotate to scrape off the scale at the bottom end of the cavity of the detection box, and at the same time sweep the settled impurities into the drain pipe, open the drain valve and discharge the impurities and scale through the drain pipe.

[0012] Preferably, the scraper is made of silicone. The silicone scraper is soft and flexible, can effectively remove scale, is gentle on the surface, and is not easy to scratch. The silicone scraper is also easy to clean and can be used repeatedly.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the connecting mechanism is installed on the circulating water pipeline of the central air conditioner, and the circulating water enters the connecting mechanism to lift the detection mechanism, and the detection mechanism detects the circulating water. At the same time, the auxiliary mechanism detects the air pressure change in the connecting mechanism, and assists in testing the water pressure change to improve the detection accuracy. After long-term use, scale and residual impurities are easily generated in the connecting mechanism, which are cleaned by the cleaning mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the axonometric structure of the utility model;

[0015] Figure 2 It is a front view structural diagram of the connection mechanism of the utility model;

[0016] Figure 3 It is a schematic diagram of the cross-sectional axonometric structure of the detection mechanism and cleaning mechanism of the utility model;

[0017] Figure 4 It is a partially enlarged axonometric structural schematic diagram of the auxiliary mechanism of the utility model.

[0018] Markings in the attached drawings: 01, connecting mechanism; 11, supporting frame; 12, detection box; 13, connecting pipe; 14, valve; 15, filter; 02, detection mechanism; 21, sealing cover; 22, pressure sensor; 23, display screen; 24, force guide rod; 25, spring; 26, pressure plate; 27, sealing ring; 03, auxiliary mechanism; 31, balance pipe; 32, exhaust valve; 33, gas pipe; 34, pressure gauge; 04, cleaning mechanism; 41, motor; 42, reducer; 43, rotating shaft; 44, scraper; 45, sewage pipe; 46, sewage valve. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0020] Example 1

[0021] The utility model discloses a pressure detection device for energy-saving transformation of central air conditioner, comprising a connecting mechanism 01; a detection mechanism 02, an auxiliary mechanism 03 and a cleaning mechanism 04, wherein the detection mechanism 02 is mounted on the connecting mechanism 01 and detects water pressure, the auxiliary mechanism 03 is mounted on the connecting mechanism 01 and re-checks water pressure through air pressure change, and the cleaning mechanism 04 is mounted on the connecting mechanism 01 and cleans impurities and scale in the connecting mechanism 01; the connecting mechanism 01 comprises a support frame 11, a detection box 12, two groups of connecting pipes 13, two groups of valves 14 and a filter screen 15, the bottom end of the supporting frame 11 is connected to the working surface, the bottom end of the detection box 12 is connected to the top end of the supporting frame 11, a cavity is arranged inside the detection box 12, the two groups of connecting pipes 13 are respectively mounted on the left and right sides of the detection box 12 and are both connected to the cavity inside the detection box 12, the two groups of valves 14 are respectively mounted on the two groups of connecting pipes 13, and the filter screen 15 is mounted in the right connecting pipe 13; the detection mechanism 02 comprises a sealing cover 21, a pressure sensor 2 2. Display screen 23, four groups of force-guiding rods 24, four groups of springs 25, pressure-bearing plate 26 and sealing ring 27. The bottom end of the sealing cover 21 is connected to the top end of the detection box 12. The bottom end of the pressure sensor 22 is connected to the top end of the sealing cover 21. The display screen 23 is installed on the pressure sensor 22. The top ends of the four groups of force-guiding rods 24 are connected to the bottom end of the sealing cover 21. The four groups of springs 25 are respectively mounted on the four groups of force-guiding rods 24. The top end of the pressure-bearing plate 26 is connected to the bottom end of the four groups of force-guiding rods 24. The pressure-bearing plate 26 is connected to the detection box 12. The inner wall of the cavity of the detection box 12 is tangent, and the top of the sealing ring 27 is connected to the bottom end of the pressure plate 26; the auxiliary mechanism 03 includes a balance pipe 31, an exhaust valve 32, an air pipe 33 and a pressure gauge 34, the balance pipe 31 is connected to the inside of the cavity of the detection box 12 and is located above the pressure plate 26, the exhaust valve 32 is installed on the balance pipe 31, the air pipe 33 is connected to the inside of the cavity of the detection box 12 and is located above the pressure plate 26, and the pressure gauge 34 is installed on the air pipe 33; the pressure gauge 34 also includes a temperature and pressure compensation function;When it is working, first, both sets of connecting pipes 13 are connected to the circulating water pipeline, and the circulating water enters the cavity of the detection box 12 from the left connecting pipe 13. When the circulating water enters the cavity of the detection box 12, the circulating water pressure is greater than the air pressure, which pushes the pressure plate 26 upward. The sealing ring 27 is set to prevent the circulating water from entering the pressure plate 26. The pressure plate 26 pushes the pressure plate 26 and the sealing ring 27 to shrink. The pressure sensor 22 converts the pressure into an electrical signal and displays it on the display screen 23. When the water pressure drops, the spring 25 drives the pressure plate 26 to rebound. While the pressure plate 26 compresses the air upward, the air passes through The gas pipe 33 enters the barometer 34, which detects the gas pressure. The auxiliary pressure sensor 22 detects the pressure. In order to prevent the hot water from heating the air above the pressure plate 26 and causing the pressure of the barometer 34 to change, the barometer 34 with temperature and pressure compensation function is selected to improve the detection accuracy. Then the circulating water passes through the filter 15 and enters the right connecting pipe 13 for recirculation. The filter 15 is set to filter and intercept impurities. When maintenance and calibration are required, the two sets of valves 14 are closed, the exhaust valve 32 is opened, and the pressure inside and outside the cavity of the detection box 12 is balanced through the balance pipe 31. ;

[0022] Example 2

[0023] like Figures 1 to 4As shown, a pressure detection device for energy-saving transformation of central air conditioner of the utility model is based on Example 1; the cleaning mechanism 04 includes a motor 41, a reducer 42, a rotating shaft 43, a scraper 44, a drain pipe 45 and a drain valve 46, the bottom end of the motor 41 is connected to the bottom end of the detection box 12, the bottom end of the reducer 42 is connected to the bottom end of the detection box 12, the rotating shaft 43 is rotatably installed in the cavity of the detection box 12 and is longitudinally connected to the reducer 42, the scraper 44 is installed on the rotating shaft 43, the top end of the drain pipe 45 is connected to the bottom end of the detection box 12, and the drain valve 46 is installed On the sewage pipe 45; also includes a scraper 44 made of silicone; when it is working, first, both sets of connecting pipes 13 are connected to the circulating water pipeline, and the circulating water enters the cavity of the detection box 12 from the left connecting pipe 13, and the circulating water enters the cavity of the detection box 12. The circulating water pressure is greater than the air pressure to push the pressure plate 26 upward, and the sealing ring 27 is set to prevent the circulating water from entering the pressure plate 26. The pressure plate 26 pushes the pressure plate 26 and the sealing ring 27 to shrink, and the pressure sensor 22 converts the pressure into an electrical signal and displays it on the display screen 23. When the water pressure drops, the spring 25 drives the bearing plate 26 to move upward. The pressure plate 26 rebounds, and the pressure plate 26 compresses the air upward. At the same time, the air enters the barometer 34 through the air pipe 33. The barometer 34 detects the gas pressure, and the auxiliary pressure sensor 22 detects the pressure. In order to prevent the hot water from heating the air above the pressure plate 26 and causing the pressure of the barometer 34 to change, the barometer 34 with temperature and pressure compensation function is selected to improve the detection accuracy. Then the circulating water passes through the filter 15 and enters the connecting pipe 13 on the right side to circulate again. The impurities are filtered and intercepted by setting the filter 15. When maintenance and calibration are required, the two sets of valves 14 are closed. , open the exhaust valve 32, balance the pressure inside and outside the cavity of the detection box 12 through the balance pipe 31, after long-term use, start the motor 41, the motor 41 drives the shaft 43 to rotate through the reducer 42, the shaft 43 drives the scraper 44 to rotate to scrape off the scale at the bottom of the cavity of the detection box 12, and at the same time, clean the settled impurities into the drain pipe 45, open the drain valve 46, the impurities and scale are discharged through the drain pipe 45, the silicone scraper is soft and elastic, can effectively remove scale, and is relatively gentle to the surface, not easy to cause scratches, and the silicone scraper is also easy to clean and can be used repeatedly.

[0024] The electric motor 41 and the reducer 42 of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manuals, without the need for technicians in the field to make creative efforts.

[0025] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A pressure detection device for energy-saving transformation of a central air conditioner, comprising a connecting mechanism (01); characterized in that: The invention also comprises a detection mechanism (02), an auxiliary mechanism (03) and a cleaning mechanism (04); the detection mechanism (02) is installed on the connecting mechanism (01) and detects the water pressure; the auxiliary mechanism (03) is installed on the connecting mechanism (01) and rechecks the water pressure through the change of air pressure; the cleaning mechanism (04) is installed on the connecting mechanism (01) and cleans the impurities and scale in the connecting mechanism (01).

2. A pressure detection device for energy-saving transformation of central air conditioner according to claim 1, characterized in that: The connecting mechanism (01) comprises a support frame (11), a detection box (12), two groups of connecting pipes (13), two groups of valves (14) and a filter (15); the bottom end of the support frame (11) is connected to the working surface; the bottom end of the detection box (12) is connected to the top end of the support frame (11); a cavity is arranged inside the detection box (12); the two groups of connecting pipes (13) are respectively installed on the left and right sides of the detection box (12) and are both connected to the cavity inside the detection box (12); the two groups of valves (14) are respectively installed on the two groups of connecting pipes (13); and the filter (15) is installed in the connecting pipe (13) on the right side.

3. A pressure detection device for energy-saving transformation of central air conditioner as claimed in claim 2, characterized in that: The detection mechanism (02) comprises a sealing cover (21), a pressure sensor (22), a display screen (23), four groups of guide rods (24), four groups of springs (25), a pressure plate (26) and a sealing ring (27). The bottom end of the sealing cover (21) is connected to the top end of the detection box (12), the bottom end of the pressure sensor (22) is connected to the top end of the sealing cover (21), the display screen (23) is mounted on the pressure sensor (22), the top ends of the four groups of guide rods (24) are connected to the bottom end of the sealing cover (21), the four groups of springs (25) are respectively mounted on the four groups of guide rods (24), the top end of the pressure plate (26) is connected to the bottom ends of the four groups of guide rods (24), and the pressure plate (26) is tangent to the inner wall of the cavity of the detection box (12), and the top end of the sealing ring (27) is connected to the bottom end of the pressure plate (26).

4. A pressure detection device for energy-saving transformation of central air conditioner as claimed in claim 3, characterized in that: The auxiliary mechanism (03) comprises a balance pipe (31), an exhaust valve (32), an air supply pipe (33) and a pressure gauge (34); the balance pipe (31) is connected to the interior of the cavity of the detection box (12) and is located above the pressure plate (26); the exhaust valve (32) is installed on the balance pipe (31); the air supply pipe (33) is connected to the interior of the cavity of the detection box (12) and is located above the pressure plate (26); and the pressure gauge (34) is installed on the air supply pipe (33).

5. A pressure detection device for energy-saving transformation of central air conditioner as claimed in claim 4, characterized in that: It also includes a barometer (34) having a temperature and pressure compensation function.

6. A pressure detection device for energy-saving transformation of central air conditioner as claimed in claim 2, characterized in that: The cleaning mechanism (04) comprises a motor (41), a reducer (42), a rotating shaft (43), a scraper (44), a sewage pipe (45) and a sewage valve (46). The bottom end of the motor (41) is connected to the bottom end of the detection box (12), the bottom end of the reducer (42) is connected to the bottom end of the detection box (12), the rotating shaft (43) is rotatably mounted inside the cavity of the detection box (12) and is longitudinally connected to the reducer (42), the scraper (44) is mounted on the rotating shaft (43), the top end of the sewage pipe (45) is connected to the bottom end of the detection box (12), and the sewage valve (46) is mounted on the sewage pipe (45).

7. A pressure detection device for energy-saving transformation of central air conditioner according to claim 6, characterized in that: The scraper (44) is also made of silicone rubber.

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