Straight-in sewage source heat pump unit and system thereof

Straight-in sewage source heat pump unit and system thereof

  • CN 106,288,508 B
  • Filed: 09/23/2016
  • Issued: 11/24/2020
  • Est. Priority Date: 09/23/2016
  • Status: Active Grant
First Claim
Patent Images

1. The utility model provides a straight advancing formula sewage source heat pump set, its characterized in that by compressor (1), oil separator (2), sewage heat exchanger (3), clear water heat exchanger (4), electronic expansion valve A (5), electronic expansion valve B (6), economic ware (7), change-over valve A (8), change-over valve B (9), change-over valve C (10), change-over valve D (11), change-over valve E (12), change-over valve F (13), change-over valve G (14), change-over valve H (15), dry filter (16), economic ware gaseous state pipeline (17), governing valve (18), sewage water inlet (19), gear motor (20), sewage delivery port (21), filter screen (22), right side baffle (23), logical axle (24), rotating partition board A (25), end plate (26), flange (27), filtration water inlet and outlet A (28), filtration water inlet and outlet B (29), The rotary partition plate B (30), the outer cylinder (31), the partition plate (32), the heat exchange tube (33), the rubber ball (34), the rear header (35), the water inlet area (36), the filtered water A area (37), the filtered water B area (38) and the water outlet area (39) are formed, during heating, the switching valve B (9), the switching valve C (10), the switching valve F (13) and the switching valve G (14) are opened, the switching valve A (8), the switching valve D (11), the switching valve E (12) and the switching valve H (15) are closed, the compressor (1) compresses low-pressure gaseous refrigerants containing a small amount of lubricating oil into high-temperature high-pressure gas to be discharged into the oil separator (2), the lubricating oil is separated by the oil separator (2), the gas enters the clear water heat exchanger (4) through the switching valve C (10) to exchange heat with clear water for condensation, the lubricating oil passes through the switching valve G (14, one path of refrigerant is changed into low-pressure and low-temperature liquid refrigerant after being throttled by an electronic expansion valve A (5) and enters an economizer (7) to exchange heat with the other path of high-pressure and high-temperature liquid refrigerant entering the economizer (7) to be evaporated, the evaporated refrigerant enters a compressor (1) through an economizer gas pipeline (17) to be secondarily compressed, meanwhile, the high-pressure and high-temperature liquid refrigerant entering the economizer (7) is subjected to heat absorption and supercooling and is mixed with the refrigerant passing through an adjusting valve (18), the refrigerant is throttled by an electronic expansion valve B (6), enters a sewage heat exchanger (3) through a change-over valve F (13) to exchange heat with sewage to be evaporated, and the evaporated refrigerant enters the compressor through a change-over valve;

  • during refrigeration, the conversion valve B (9), the conversion valve C (10), the conversion valve F (13) and the conversion valve G (14) are closed, the conversion valve A (8), the conversion valve D (11), the conversion valve E (12) and the conversion valve H (15) are opened, the compressor (1) compresses a gaseous refrigerant containing a small amount of lubricating oil into high-temperature high-pressure gas to be discharged into the oil separator (2), the lubricating oil is separated by the oil separator (2), the gas enters the sewage heat exchanger (3) through the conversion valve A (8) to exchange heat with sewage and be condensed, the condensed gas passes through the conversion valve E (12) and the drying filter (16) and is divided into three paths before the economizer (7), one path of the gas is throttled by the electronic expansion valve A (5) to become low-pressure low-temperature liquid refrigerant, the low-temperature liquid refrigerant enters the economizer (7) to exchange heat with the other path of high-pressure high-temperature liquid refrigerant entering the economizer (, meanwhile, high-pressure high-temperature liquid refrigerant entering the economizer (7) is subjected to heat absorption and supercooling and is mixed with the refrigerant passing through the regulating valve (18), the refrigerant passes through an electronic expansion valve B (6) for throttling, enters a clear water heat exchanger (4) through a change-over valve H (15) for heat exchange and evaporation with clear water, enters a compressor for compression and circulation through a change-over valve D (11) after evaporation, a right side clapboard (23) is welded on the inner wall of an outer cylinder (31), a right side clapboard (23) and a filter screen (22) are in an intersected circular area, the right side clapboard (23) is provided with a filter water inlet and outlet A (28) and a filter water inlet and outlet B (29), a rotary clapboard A (25), the right side clapboard (23) and the inner wall of the outer cylinder (31) enclose a closed space, and the rotary clapboard B (30) and the filter screen (22) divide the space enclosed by, a water inlet area (36) is connected with the sewage inlet (19), a water outlet area (39) is connected with the sewage outlet (21), a filtered water A area (37) is connected with the filtered water inlet and outlet A (28), a filtered water B area (38) is connected with the filtered water inlet and outlet B (29), the filter screen (22), the rotary clapboard A (25), the rotary clapboard B (30) and the through shaft (24) form a whole and are driven to rotate by the speed reducing motor (20), the circumference of the rotary clapboard A (25) is tightly contacted with the inner wall of the outer barrel (31) to form dynamic sealing in the rotating process, the intersection of the filter screen (22) and the right side clapboard (23) is tightly contacted to form dynamic sealing, the intersection of the rotary clapboard B (30) and the inner wall of the outer barrel (31) is tightly contacted with the intersection of the right side clapboard (23) to form dynamic sealing, sewage enters the water inlet area (36) in the outer barrel (31) from the sewage inlet (19), after being filtered by the filter screen (22), the dirt and impurities are intercepted on the outer surface of the filter screen (22), filtered water enters a filtered water area A (37), enters a heat exchange pipe (33) through a filtered water inlet and outlet A (28) for heat exchange, returns to a filtered water area B (38) on the inner side of the filter screen (22) through a filtered water inlet and outlet B (29) after heat exchange, washes the dirt and impurities on the outer surface of the filter screen (22) and is discharged from a sewage outlet (21);

    after running for N minutes, when the dirt and sundries accumulated on the outer surface of the filter screen (22) of the water inlet area (36) reach a certain amount, the filter screen (22), the rotary clapboard A (25), the rotary clapboard B (30) and the through shaft (24) are driven by the speed reducing motor (20) to rotate clockwise, the rotation angle is 90 degrees, the water inlet area (36) containing more dirt and sundries is rotated to be connected with the sewage outlet (21) to become a water outlet area (39), the filter screen (22) washes the cleaner water outlet area (39) and then is connected with the sewage inlet (19) to become the water inlet area (36), the sewage enters the water inlet area (36) in the outer barrel (31) from the sewage inlet (19), after being filtered by the filter screen (22), the dirt and sundries are intercepted on the outer surface of the filter screen (22), the filtered water enters the filtered water B area (38) and enters the heat exchange tube (33) from the filtered, after heat exchange, the filtered water returns to a filtered water area A (37) on the inner side of the filter screen (22) through the filtered water inlet and outlet A (28), then dirt and impurities on the outer surface of the filter screen (22) are washed and discharged through the sewage outlet (21), the water path is reversed once when the filtered water entering the heat exchange tube (33) rotates once, and the dirt and impurities accumulated at the water outlet of the heat exchange tube (33) are washed and circulated repeatedly.

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