Self-cleaning environment-friendly heat-exchange air source heat pump

Abstract

The application relates to the technical field of heat pumps, in particular to a self-cleaning environment-friendly heat-exchange air source heat pump which comprises a heat pump device, the heat pump device comprises a shell, mounting racks are fixedly connected to the lower ends of the two sides of the shell, a protective net is fixedly connected to the opening at the front left side of the shell, and a fan blade is fixedly connected to the inner left front end of the shell. The ice is rapidly melted at the contact surface between the ice and the evaporator fins through the temperature rise of the evaporator fins, the scraping plate is moved up and down by the refrigerant airflow, the refrigerant airflow in the scraping plate is circulated, the ice and frost are more easily scraped off, the scraping-off assembly is not damaged, the alternate heating and ice-removing mode does not cause the temperature of the evaporator fins to be too high during the ice-removing and frost-removing process, the heat exchange from the air cannot be completed, the temperature of the evaporator fins is close to normal temperature after the ice is removed, the evaporator fins can still complete the heat exchange with the air during the ice-removing and frost-removing process, and the energy-saving effect is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat pumps, in particular to a self-cleaning environmentally friendly heat exchange air source heat pump. BACKGROUND

[0002] In today's heating and refrigeration field, air source heat pump as a kind of efficient and environmentally friendly equipment has been widely used. However, the existing air source heat pump in the running process is faced with many problems, especially the frosting and icing phenomenon of evaporator. Especially in the central coastal areas of China, the winter environmental temperature is low and the humidity is high, the evaporator surface is easy to frost and even ice, which not only hinders the air circulation and reduces the heat exchange efficiency, but also greatly increases the energy consumption.

[0003] The current common deicing and defrosting methods, such as hot gas electric heating defrosting, have obvious defects. Although hot gas electric heating defrosting can solve the defrosting problem to some extent, the energy consumption is very high, the operation cost is high, and it does not conform to the development trend of energy saving and environmental protection. In the process of hot gas electric heating, the evaporator is overheated, which leads to the fact that the evaporator cannot carry heat from the air during the period of cooling to the outdoor temperature. The heat carried is only the residual heat of hot gas electric heating, which cannot achieve the effect of energy saving. There are also methods of setting broom or scraper, setting motor and other connecting devices or using flowing refrigerant as driving source to drive the broom or scraper to move to remove ice or frost. However, the effect of directly sweeping and scraping ice and frost is limited, and the speed of the broom or scraper cannot be adjusted according to the environmental temperature, which further causes energy waste or damage to the broom and scraper. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a self-cleaning environmentally friendly heat exchange air source heat pump to solve the problems in the background art.

[0005] In order to achieve the above object, the present application is realized by the following technical scheme: A self-cleaning environment-friendly heat exchange air source heat pump, comprising a heat pump device, the heat pump device comprises a shell, the lower end of the shell is fixedly connected with a mounting frame on both sides, the front left side opening of the shell is fixedly connected with a protective net, the inner left side front end of the shell is fixedly connected with a fan blade, the inner left side rear end of the shell is fixedly connected with an evaporator, the middle part of the shell is fixedly connected with a partition plate, the left side middle part of the partition plate is fixedly connected with a flow control assembly, the inner right side front end of the shell is fixedly connected with a compressor, the upper end of the compressor is fixedly connected with a four-way valve, the inner right side rear end of the shell is fixedly connected with a condenser, the rear end of the compressor is fixedly connected with a three-way valve one, the inner top right side of the shell is fixedly connected with an expansion valve, the upper end of the condenser is fixedly connected with a connecting pipe, the lower end of the heat exchange pipe of the evaporator is fixedly connected with the left end of the four-way valve, the right end of the partition plate is fixedly connected with a mounting plate, the middle part of the mounting plate is fixedly connected with a flow direction control assembly, the rear end of the evaporator is provided with a scraping assembly, the inside of the evaporator is fixedly connected with a temperature rising pipe, and the lower end of the temperature rising pipe is fixedly connected with a liquid discharge pipe.

[0006] Preferably, the rear end opening of the condenser is fixedly connected with the front end liquid inlet of the condenser, the upper end of the connecting pipe is fixedly connected with the right end opening of the expansion valve, the left end of the expansion valve is fixedly connected with the outer periphery of the upper end of the heat exchange pipe of the evaporator, the right end of the liquid discharge pipe is fixedly connected with the lower end opening of the four-way valve, the lower end of the heat exchange pipe of the evaporator is fixedly connected with a liquid return pipe, and the right end of the liquid return pipe is fixedly connected with the left end opening of the four-way valve.

[0007] Preferably, the flow control assembly comprises a flow valve body, temperature sensors and humidity sensors are fixedly connected with the left side front end of the flow valve body, starters are fixedly connected with the left end rear side of the flow valve body, a cylinder is fixedly connected with the left side upper end of the flow valve body, an L-shaped rack is fixedly connected with the front end driving end of the cylinder, the middle part is fixedly connected with a valve rod one, a valve flap is fixedly connected with the lower end of the valve rod one, an inlet pipe one is fixedly connected with the front end opening of the flow valve body, and an outlet pipe one is fixedly connected with the rear end opening of the flow valve body.

[0008] Preferably, the starters are electrically connected with the temperature sensors, the humidity sensors and the cylinder through control lines, the right end of the flow valve body is fixedly connected with the left side middle part of the partition plate, the lower end of the cylinder is slidingly connected with the upper end of the flow valve body, the outer periphery of the valve flap is rotatably connected with the inside of the flow valve body, and the right end of the inlet pipe one is fixedly connected with the left end opening of the three-way valve one.

[0009] Preferably, the flow direction control assembly comprises the water tank one, the speed reducer, the control valve one and the control valve two, the inside of the water tank one is rotationally connected with the impeller one, the middle of the impeller one is fixedly connected with the rotating shaft one, the upper end of the rotating shaft one is fixedly connected with the gear one, the gear one is meshingly connected with the gear two, the middle of the gear two is fixedly connected on the upper part of the input end of the speed reducer, the upper part of the output end of the speed reducer is fixedly connected with the gear three, the gear three is meshingly connected with the gear four, the middle of the gear four is fixedly connected with the valve rod two, the middle of the valve rod two is fixedly connected with the valve element one, the outer periphery of the valve element one is rotationally connected in the inside of the control valve one, the right end opening of the control valve one is fixedly connected with the liquid outlet pipe two, the rear end of the liquid outlet pipe two is fixedly connected with the three-way valve two, the rear end of the three-way valve two is fixedly connected with the liquid inlet pipe two, the left end of the control valve one is fixedly connected with the liquid outlet pipe three.

[0010] Preferably, the lower ends of the water tank one, the speed reducer and the three-way valve two are fixedly connected on the upper end of the mounting plate, the upper end of the control valve one is fixedly connected on the lower end of the mounting plate, the right end of the liquid outlet pipe one is fixedly connected in the left end opening of the water tank one.

[0011] Preferably, the right end opening of the control valve two is fixedly connected with the liquid inlet pipe three, the inside of the control valve two is fixedly connected with the valve element two, the lower end of the valve element two is fixedly connected with the valve rod three, the lower end of the valve rod three is fixedly connected with the belt pulley one, the belt pulley one is connected with the belt pulley two through the transmission belt, the middle of the belt pulley two is fixedly connected on the lower end of the valve rod two, the left end opening of the control valve two is fixedly connected with the liquid outlet pipe four, the upper end outer periphery of the liquid outlet pipe four is fixedly connected on the upper end outer periphery of the temperature rising pipe.

[0012] Preferably, the front end of the rotating shaft one is fixedly connected in the right end opening of the three-way valve two, the upper end of the control valve two is fixedly connected on the lower end of the rear side of the mounting plate.

[0013] Preferably, the scraping assembly comprises the water tank two and the scraper, the water tank two is two and is fixedly connected on the inner top front side left end and the inner top rear side rear end of the shell respectively, the inside of the water tank two is fixedly connected with the impeller two, the middle of the impeller two is fixedly connected with the reciprocating lead screw, the lower end of the reciprocating lead screw is threadedly connected with the driving block, the end of the driving block close to the evaporator is fixedly connected on the two ends of the scraper, the upper end of the scraper is uniformly provided with the water guide groove, the two end openings of the water guide groove are fixedly connected with the drainage tube, the one end opening of the left water tank two is fixedly connected with the backflow pipe, the one end opening outer periphery of the right water tank two is fixedly connected on the upper end outer periphery of the liquid outlet pipe three.

[0014] Preferably, the upper ends of the drainage pipes are fixedly connected in the other end openings of the water sump two, the lower ends of the return pipes are fixedly connected in the upper end openings of the four-way valve, and the lower ends of the reciprocating wire rods are rotatably connected to the inner lower side of the shell through bearings.

[0015] The application provides a self-cleaning environment-friendly heat-exchange air source heat pump.

[0016] The temperature sensor can sense the change of temperature and humidity in real time, and transmit an electric signal to the starter, the starter can control the opening size of the valve disc through the air cylinder, and then control the amount of high-temperature and high-pressure refrigerant entering the control valve one and the control valve two, so that the temperature of the heating evaporator fin, the heating and scraping switching frequency and the scraping speed can be adjusted according to the outdoor temperature and humidity, the effect of deicing and defrosting can be maintained all the time, and the temperature of the evaporator fin is close to the outdoor temperature after deicing and defrosting, so that the evaporator can exchange heat in the air, and the energy-saving effect is achieved.

[0017] The application uses the heat of the refrigerant to heat the evaporator, in the deicing process, without additional large amount of energy input, effectively reduces the energy loss, compared with the traditional defrosting mode, greatly improves the energy-saving effect of the air source heat pump, and reduces the use cost of the user.

[0018] On the one hand, the heating of the evaporator fin melts the ice on the contact surface of the evaporator fin, on the other hand, the refrigerant gas flow drives the scraper to move up and down, and the refrigerant gas flow in the scraper circulates, so that the ice and frost are more easily scraped, and the scraping assembly is not damaged, on the other hand, by the alternating heating and deicing mode, the temperature of the evaporator fin is not too high in the deicing and defrosting process, the evaporator fin cannot exchange heat with the air, the temperature of the evaporator fin is close to normal temperature after deicing, the evaporator fin can still complete heat exchange with the air in the deicing and defrosting process, the energy-saving effect is achieved, the scraper continuously moves up and down under the driving of the refrigerant gas flow, not only can deice and defrost, but also can clean the dirt and impurities on the surface of the evaporator to a certain extent, and the self-cleaning function is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a front view schematic diagram of the application;

[0020] Figure 2 It is a rear view schematic diagram of the application;

[0021] Figure 3 It is a front view sectional schematic diagram of the application;

[0022] Figure 4 It is a front view sectional schematic diagram of the application;

[0023] Figure 5 Fig. 2 is a front view of the application;

[0024] Figure 6 Fig. 3 is a left view of the application;

[0025] Figure 7 Fig. 4 is a back view of the application;

[0026] Figure 8 Fig. 5 is a back view of the application;

[0027] Figure 9 Fig. 6 is a side view of the application;

[0028] Figure 10 Fig. 7 is a side view of the application.

[0029] 1, heat pump device; 101, shell; 102, mounting frame; 103, protective net; 104, fan blade; 105, evaporator; 106, compressor; 107, three-way valve one; 108, condenser; 109, connecting pipe; 1010, expansion valve; 1011, flow valve body; 1012, temperature sensor; 1013, humidity sensor; 1014, starter; 1015, cylinder; 1016, L-shaped rack; 1017, gear one; 1018, valve rod one; 1019, valve flap; 1020, liquid inlet pipe one; 1021, liquid outlet pipe one; 1022, water tank one; 1023, impeller one; 1024, rotating shaft one; 1025, gear one; 1026, gear two; 1027, speed reducer; 1028, gear three; 1029, gear four; 1030, valve rod two; 1031, valve core one; 1032, control valve one; 1033, liquid outlet pipe two; 1034, three-way valve two; 1035, liquid inlet pipe two; 1036, water tank two; 1037, impeller two; 1038, reciprocating screw rod; 1039, driving block; 1040, scraper; 1041, water guide groove; 1042, liquid inlet pipe three; 1043, control valve two; 1044, valve core two; 1045, valve rod three; 1046, pulley one; 1047, transmission belt; 1048, pulley two; 1049, liquid outlet pipe four; 1050, temperature rising pipe; 1051, liquid discharge pipe; 1052, mounting plate; 1053, return pipe; 1054, liquid return pipe; 1055, four-way valve; 1056, liquid outlet pipe three; 1057, drainage pipe. DETAILED DESCRIPTION

[0030] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of the present application.

[0031] As shown in Figures 1-10 The self-cleaning environment-friendly heat-exchange air source heat pump provided by the embodiment of the present application includes a heat pump device 1, the heat pump device 1 includes a shell 101, both sides of the lower end of the shell 101 are fixedly connected with mounting racks 102, the left opening of the front end of the shell 101 is fixedly connected with a protective net 103, the inner left side of the front end of the shell 101 is fixedly connected with a fan blade 104, the inner left side of the rear end of the shell 101 is fixedly connected with an evaporator 105, the middle part of the shell 101 is fixedly connected with a partition plate, the left middle part of the partition plate is fixedly connected with a flow control assembly, the inner right side of the front end of the shell 101 is fixedly connected with a compressor 106, the upper end liquid inlet of the compressor 106 is fixedly connected with a four-way valve 1055, the inner right side of the rear end of the shell 101 is fixedly connected with a condenser 108, the rear end liquid outlet of the compressor 106 is fixedly connected with a three-way valve one 107, the inner top right side of the shell 101 is fixedly connected with an expansion valve 1010, the upper end liquid outlet of the condenser 108 is fixedly connected with a connecting pipe 109, the outer periphery of the lower end of the heat exchange pipe of the evaporator 105 is fixedly connected to the inner left end of the four-way valve 1055, the right middle part of the partition plate is fixedly connected with a mounting plate 1052, the middle part of the mounting plate 1052 is fixedly connected with a flow direction control assembly, the rear end of the evaporator 105 is provided with a scraping assembly, the inner part of the evaporator 105 is fixedly connected with a temperature rising pipe 1050, and the lower end of the temperature rising pipe 1050 is fixedly connected with a liquid discharge pipe 1051.

[0032] In the embodiment, the rear end opening of the condenser 108 is fixedly connected to the front end liquid inlet of the condenser 108, the upper end of the connecting pipe 109 is fixedly connected to the right end opening of the expansion valve 1010, the inner left end of the expansion valve 1010 is fixedly connected to the outer periphery of the upper end of the heat exchange pipe of the evaporator 105, the right end of the liquid discharge pipe 1051 is fixedly connected to the lower end opening of the four-way valve 1055, the lower end of the heat exchange pipe of the evaporator 105 is fixedly connected with a liquid return pipe 1054, and the right end of the liquid return pipe 1054 is fixedly connected to the left end opening of the four-way valve 1055.

[0033] Among them, 1 how to complete heat exchange in the air is prior art, which will not be repeated here.

[0034] In the embodiment, the flow control assembly comprises a flow valve body 1011, a temperature sensor 1012 and a humidity sensor 1013 are fixedly connected to the front left end of the flow valve body 1011, a starter 1014 is fixedly connected to the left end of the flow valve body 1011, a gas cylinder 1015 is fixedly connected to the upper left end of the flow valve body 1011, an L-shaped rack 1016 is fixedly connected to the front end driving end of the gas cylinder 1015, the L-shaped rack 1016 is meshingly connected with 1017, the middle part of 1017 is fixedly connected with a valve rod one 1018, the lower end of the valve rod one 1018 is fixedly connected with a valve clack 1019, an inlet pipe one 1020 is fixedly connected in the front end opening of the flow valve body 1011, and an outlet pipe one 1021 is fixedly connected in the rear end opening of the flow valve body 1011.

[0035] In the embodiment, the starter 1014 is electrically connected with the temperature sensor 1012, the humidity sensor 1013 and the gas cylinder 1015 through control lines, the right end of the flow valve body 1011 is fixedly connected to the left middle part of the partition plate, the lower end of the gas cylinder 1015 is slidingly connected to the upper end of the flow valve body 1011, the outer periphery of the valve clack 1019 is rotatably connected to the inside of the flow valve body 1011, and the right end of the inlet pipe one 1020 is fixedly connected in the left end opening of the three-way valve one 107.

[0036] The temperature sensor 1012 and the humidity sensor 1013 transmit electric signals to the starter 1014, the starter 1014 controls the gas cylinder 1015 to start, pulls the L-shaped rack 1016 to move backward, at this time, the valve clack 1019 is driven to rotate in the flow valve body 1011 through 1017 and the valve rod one 1018, and the passage in the flow valve body 1011 is opened, the temperature sensor 1012 can sense the change of temperature and humidity in real time, transmit electric signals to the starter 1014, the starter 1014 can control the opening size of the valve clack 1019 through the gas cylinder 1015, and then the amount of high-temperature and high-pressure refrigerant entering the control valve one 1032 and the control valve two 1043 can be controlled, so that the temperature of the heating evaporator 105 fin, the frequency of heating and scraping switching and the scraping speed can be adjusted according to the outdoor temperature and humidity, the effect of deicing and defrosting can be maintained all the time, and the temperature of the evaporator 105 fin is close to the outdoor temperature after deicing and defrosting, so that the evaporator 105 can exchange heat in the air to achieve the effect of energy saving.

[0037] In the embodiment, the flow direction control assembly comprises the water tank 1022, the speed reducer 1027, the control valve 1 1032 and the control valve 2 1043, the inside of the water tank 1022 is rotationally connected with the impeller 1 1023, the middle of the impeller 1 1023 is fixedly connected with the rotating shaft 1 1024, the upper end of the rotating shaft 1 1024 is fixedly connected with the gear 1 1025, the gear 1 1025 is meshingly connected with the gear 2 1026, the middle of the gear 2 1026 is fixedly connected on the upper part of the input end of the speed reducer 1027, the upper part of the output end of the speed reducer 1027 is fixedly connected with the gear 3 1028, the gear 3 1028 is meshingly connected with the gear 4 1029, the middle of the gear 4 1029 is fixedly connected with the valve rod 2 1030, the middle of the valve rod 2 1030 is fixedly connected with the valve core 1 1031, the outer periphery of the valve core 1 1031 is rotationally connected in the inside of the control valve 1 1032, the right end opening of the control valve 1 1032 is fixedly connected with the liquid outlet pipe 2 1033, the rear end of the liquid outlet pipe 2 1033 is fixedly connected with the three-way valve 2 1034, the rear end of the three-way valve 2 1034 is fixedly connected with the liquid inlet pipe 2 1035, the left end of the control valve 1 1032 is fixedly connected with the liquid outlet pipe 3 1056.

[0038] In the embodiment, the lower ends of the water tank 1022, the speed reducer 1027 and the three-way valve 2 1034 are fixedly connected with the upper end of the mounting plate 1052, the upper end of the control valve 1 1032 is fixedly connected with the lower end of the front part of the mounting plate 1052, the right end of the liquid outlet pipe 1 1021 is fixedly connected in the left end opening of the water tank 1022.

[0039] In the embodiment, the right end opening of the control valve 2 1043 is fixedly connected with the liquid inlet pipe 3 1042, the inside of the control valve 2 1043 is fixedly connected with the valve core 2 1044, the lower end of the valve core 2 1044 is fixedly connected with the valve rod 3 1045, the lower end of the valve rod 3 1045 is fixedly connected with the belt pulley 1 1046, the belt pulley 1 1046 is connected with the belt pulley 2 1048 through the transmission belt 1047, the middle of the belt pulley 2 1048 is fixedly connected with the lower end of the valve rod 2 1030, the left end opening of the control valve 2 1043 is fixedly connected with the liquid outlet pipe 4 1049, the upper end of the liquid outlet pipe 4 1049 is fixedly connected with the upper end of the outer periphery of the temperature rising pipe 1050.

[0040] In the embodiment, the front end of the rotating shaft 1 1024 is fixedly connected in the right end opening of the three-way valve 2 1034, the upper end of the control valve 2 1043 is fixedly connected with the lower end of the rear side of the mounting plate 1052.

[0041] In the embodiment, the scraping assembly comprises two water tanks 1036, which are fixedly connected to the inner top front left end and the inner top rear rear end of the shell 101, respectively. The interiors of the water tanks 1036 are fixedly connected with impellers 1037. The middle parts of the impellers 1037 are fixedly connected with reciprocating lead screws 1038. The lower ends of the reciprocating lead screws 1038 are threadedly connected with driving blocks 1039. The ends of the driving blocks 1039 close to the evaporator 105 are fixedly connected to the two ends of a scraper 1040. The upper end of the scraper 1040 is uniformly provided with water guide grooves 1041. The two end openings of the water guide grooves 1041 are fixedly connected with drainage tubes 1057. One end opening of the left water tank 1036 is fixedly connected with a reflux tube 1053. The other end opening of the right water tank 1036 is fixedly connected with the upper end of a liquid outlet tube 1056.

[0042] In the embodiment, the upper ends of the drainage tubes 1057 are fixedly connected to the other end openings of the water tanks 1036. The lower end of the reflux tube 1053 is fixedly connected to the upper end opening of the four-way valve 1055. The lower ends of the reciprocating lead screws 1038 are rotatably connected to the inner lower side of the shell 101 through bearings.

[0043] Wherein, the compressor 106 high temperature and high pressure refrigerant part by the inlet pipe one 1020 and outlet pipe one 1021 into the water tank one 1022, and then by the impeller one 1023 and the shaft one 1024 drive gear one 1025 rotation, by gear two 1026 and reducer 1027 and gear three 1028 drive gear four 1029 rotation, and then by the valve stem two 1030 drive valve core one 1031 in the control valve one 1032 inside rotation, at the same time through the pulley two 1048, transmission belt 1047 and pulley one 1046 drive valve stem three 1045 rotation, make the valve core two 1044 and control valve one 1032 synchronous rotation, and then make the control valve one 1032 and control valve two 1043 inside the passage is alternately opened, high temperature and high pressure refrigerant through the outlet pipe two 1033, three way valve two 1034, inlet pipe three 1042, outlet pipe four 1049 and outlet pipe three 1056 alternately into the heating pipe 1050 and scraping assembly, in the deicing start stage, high temperature and high pressure refrigerant into the heating pipe 1050, preliminary evaporator 105 fin outside heating, so that the frost and evaporator 105 fin contact surface melting, the refrigerant again through the drain pipe 1051 and four way valve 1055 backflow to the compressor 106 reheat, when the frost and evaporator 105 fin contact surface preliminary melting, high temperature and high pressure refrigerant will not enter the heating pipe 1050, instead will enter the right water tank two 1036 through the outlet pipe three 1056, at the same time, through the right drainage pipe 1057 into the scraper 1040, and then through the left drainage pipe 1057 into the left water tank two 1036, at the same time through the impeller two 1037 drive both sides of the reciprocating screw rod 1038 rotation, and then through the drive block 1039 drive the scraper 1040 up and down reciprocating movement once, in the process of the scraper 1040 moving down, the high temperature and high pressure refrigerant in the scraper 1040 will heat the frost on the upper end of the evaporator 105 fin, and then make the frost more easily scraped from the evaporator 105 fin, and cold water can flow out of the evaporator 105 fin through the evenly distributed water guide groove 1041 on the scraper 1040, avoid the secondary frozen ice, the refrigerant again through the return pipe 1053 and four way valve 1055 backflow to the compressor 106 reheat, by using the heat of the refrigerant itself to make the evaporator temperature rise, in the deicing process, without additional large amount of energy input, effectively reduces the energy loss, compared with the traditional defrosting way, greatly improves the energy saving effect of air source heat pump, reduces the user's use cost, on the one hand, the evaporator temperature rise makes the ice and evaporator 105 fin contact surface quickly melt, on the other hand, the refrigerant gas flow drive the scraper 1040 up and down, the scraper inside has the refrigerant gas flow circulation again, make the ice and frost more easily scraped, will not damage the scraping assembly, again, by alternating heating deicing way, will not cause in the deicing defrosting process, the evaporator 105 fin temperature rise too high, cause can't heat exchange from the air,The evaporator 105 fin temperature is also close to normal temperature after ice removal, which does not cause the evaporator 105 fin to complete heat exchange with air during the defrosting and ice removal process, realizes energy saving effect, and the scraper 1040 continuously moves up and down under the driving of the refrigerant gas flow, which can not only remove ice and defrost, but also clean the dirt and impurities on the surface of the evaporator to a certain extent, realizing self-cleaning function.

[0044] Working principle: first, when the outdoor temperature below zero degrees, and humidity in the environment above 60% using heat pump equipment 1 to heat the water in the water tank, temperature sensor 1012 and humidity sensor 1013 will transmit electrical signal to the starter 1014, the starter 1014 control cylinder 1015 start, pull L rack 1016 back, at this time, through 1017 and valve rod 1018 driven valve 1019 in the flow valve body 1011 inside rotation, thereby making the passage inside the flow valve body 1011 is opened, compressor 106 high temperature and high pressure refrigerant part through the inlet pipe 1020 and outlet pipe 1021 into the water warehouse 1022, in turn through the impeller 1023 and shaft 1024 driven gear 1025 rotation, through gear 1026 and reducer 1027 and gear 1028 driven gear 1029 rotation, in turn through the valve rod 1030 driven valve core 1031 in the control valve 1032 inside rotation, at the same time through the pulley 1048, transmission belt 1047 and pulley 1046 driven valve rod 1045 rotation, so that the valve core 1044 and control valve 1032 synchronous rotation, in turn makes the control valve 1032 and control valve 1043 inside the passage is alternately opened, high temperature and high pressure refrigerant through the outlet pipe 1033, three way valve 1034, inlet pipe 1042, outlet pipe 1049 and outlet pipe 1056 alternately into the heating pipe 1050 and scraping assembly, in the deicing stage, high temperature and high pressure refrigerant into the heating pipe 1050, preliminary evaporator 105 fin outside heating, so that the frost and evaporator 105 fin contact surface melting, the refrigerant is back through the drain pipe 1051 and four way valve 1055 to the compressor 106 again heated, when the frost and evaporator 105 fin contact surface preliminary melting, high temperature and high pressure refrigerant will not enter the heating pipe 1050, instead will enter the water warehouse 1036 on the right through the outlet pipe 1056, at the same time, through the right side of the drainage pipe 1057 into the scraper 1040, again through the left side of the drainage pipe 1057 into the water warehouse 1036 on the left, at the same time through the impeller 1023 driven both sides of the reciprocating wire rod 1038 rotation, in turn through the drive block 1039 driven scraper 1040 up and down reciprocating movement, in the process of scraper 1040 down, the high temperature and high pressure refrigerant in the scraper 1040 will heat the frost on the evaporator 105 fin on the end, in turn makes the frost more easily scraped from the evaporator 105 fin, and cold water can flow out of the evaporator 105 fin through the evenly distributed water guide groove 1041 on the scraper 1040, avoid the secondary frozen ice, the refrigerant is back through the return pipe 1053 and four way valve 1055 to the compressor 106 again heated, through the use of refrigerant heat makes the evaporator heating, in the deicing process, without additional large amount of energy input, effectively reduces the energy loss, compared with the traditional defrosting way,The air source heat pump greatly improves the energy saving effect, reduces the use cost of the user, on the one hand, the evaporator temperature rise makes the ice and evaporator 105 fin contact surface melt quickly, on the other hand, the refrigerant gas flow drives the scraper 1040 to move up and down, and the internal reflux of the scraper also has the circulation of the refrigerant gas flow, so that the ice and frost are more easily scraped off, and the scraping assembly is not damaged, and on the other hand, through the alternating heating and deicing mode, the evaporator 105 fin cannot be heated too high in the process of deicing and defrosting, which causes the heat exchange from the air, and the evaporator 105 fin temperature is also close to normal temperature after deicing, which cannot cause the evaporator 105 fin to complete the heat exchange with the air in the process of defrosting and deicing, realize the energy saving effect, the scraper 1040 continuously moves up and down under the driving of the refrigerant gas flow, which can not only deice and defrost, but also clean the dirt and impurities on the surface of the evaporator to a certain extent, realize the self-cleaning function, and the temperature sensor 1012 can sense the change of temperature and humidity in real time, transmit the electric signal to the starter 1014, the starter 1014 can control the opening size of the valve 1019 through the air cylinder 1015, and then realize the control of the amount of high temperature and high pressure refrigerant entering the control valve one 1032 and the control valve two 1043, so that the temperature of the evaporator 105 fin can be adjusted according to the outdoor temperature and humidity, the heating and scraping switching frequency and the scraping speed, the effect of deicing and defrosting can be realized, and the temperature of the evaporator 105 fin can be kept close to the outdoor temperature after deicing and defrosting, so that the evaporator 105 can realize heat exchange in the air, and the energy saving effect is realized.

[0045] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning environmentally friendly heat-exchanging air source heat pump comprising a heat pump device (1), characterized in that, The heat pump equipment (1) includes a shell (101), both sides of the lower end of the shell (101) are fixedly connected with mounting racks (102), the left opening of the front end of the shell (101) is fixedly connected with a protective net (103), the inner left side of the front end of the shell (101) is fixedly connected with a fan blade (104), the inner left side of the rear end of the shell (101) is fixedly connected with an evaporator (105), the middle part of the shell (101) is fixedly connected with a partition plate, the left middle part of the partition plate is fixedly connected with a flow control assembly, the inner right side of the front end of the shell (101) is fixedly connected with a compressor (106), the upper end liquid inlet end of the compressor (106) is fixedly connected with a four-way valve (1055), the inner right side of the rear end of the shell (101) is fixedly connected with a condenser (108), the rear end liquid outlet end of the compressor (106) is fixedly connected with a three-way valve one (107), the inner top right side of the shell (101) is fixedly connected with an expansion valve (1010), the upper end liquid outlet end of the condenser (108) is fixedly connected with a connecting pipe (109), the outer periphery of the lower end of the heat exchange pipe of the evaporator (105) is fixedly connected to the left end inside of the four-way valve (1055), the right end middle part of the partition plate is fixedly connected with a mounting plate (1052), the middle part of the mounting plate (1052) is fixedly connected with a flow direction control assembly, the rear end of the evaporator (105) is provided with a scraping assembly, the inside of the evaporator (105) is fixedly connected with a temperature rising pipe (1050), and the lower end of the temperature rising pipe (1050) is fixedly connected with a liquid discharge pipe (1051).

2. The self-cleaning environmentally friendly heat-exchange air source heat pump according to claim 1, characterized in that, The rear end opening of the condenser (108) is fixedly connected to the front end liquid inlet end of the condenser (108), the upper end of the connecting pipe (109) is fixedly connected in the right end opening of the expansion valve (1010), the left end inside of the expansion valve (1010) is fixedly connected to the outer periphery of the upper end of the heat exchange pipe of the evaporator (105), the right end of the liquid discharge pipe (1051) is fixedly connected in the lower end opening of the four-way valve (1055), the lower end of the heat exchange pipe of the evaporator (105) is fixedly connected with a liquid return pipe (1054), and the right end of the liquid return pipe (1054) is fixedly connected in the left end opening of the four-way valve (1055).

3. The self-cleaning environmentally friendly heat-exchange air source heat pump according to claim 1, characterized in that, The flow control assembly includes a flow valve body (1011), the left side of the front end of the flow valve body (1011) is fixedly connected with a temperature sensor (1012) and a humidity sensor (1013), the left end of the rear side of the flow valve body (1011) is fixedly connected with a starter (1014), the upper end of the left side of the flow valve body (1011) is fixedly connected with a cylinder (1015), the front end of the driving end of the cylinder (1015) is fixedly connected with an L-shaped rack (1016), the L-shaped rack (1016) is meshingly connected with (1017), the middle part of (1017) is fixedly connected with a valve rod one (1018), the lower end of the valve rod one (1018) is fixedly connected with a valve clack (1019), the front end opening of the flow valve body (1011) is fixedly connected with a liquid inlet pipe one (1020), and the rear end opening of the flow valve body (1011) is fixedly connected with a liquid outlet pipe one (1021).

4. The self-cleaning environmentally friendly heat-exchange air source heat pump according to claim 3, characterized in that, The starter (1014) is electrically connected with the temperature sensor (1012), the humidity sensor (1013) and the cylinder (1015) through control lines, the right end of the flow valve body (1011) is fixedly connected to the left side of the middle part of the partition plate, the lower end of the cylinder (1015) is slidingly connected to the upper end of the flow valve body (1011), the outer periphery of the valve clack (1019) is rotatably connected to the inside of the flow valve body (1011), and the right end of the liquid inlet pipe one (1020) is fixedly connected in the left end opening of the three-way valve one (107).

5. The self-cleaning environmentally friendly heat-exchange air source heat pump according to claim 3, characterized in that, The flow direction control assembly includes a water tank one (1022), a speed reducer (1027), a control valve one (1032) and a control valve two (1043), the inside of the water tank one (1022) is rotatably connected with an impeller one (1023), the middle part of the impeller one (1023) is fixedly connected with a rotating shaft one (1024), the upper end of the rotating shaft one (1024) is fixedly connected with a gear one (1025), the gear one (1025) is meshingly connected with a gear two (1026), the middle part of the gear two (1026) is fixedly connected to the upper part of the input end of the speed reducer (1027), the output end of the speed reducer (1027) is fixedly connected with a gear three (1028), the gear three (1028) is meshingly connected with a gear four (1029), the middle part of the gear four (1029) is fixedly connected with a valve rod two (1030), the middle part of the valve rod two (1030) is fixedly connected with a valve core one (1031), the outer periphery of the valve core one (1031) is rotatably connected to the inside of the control valve one (1032), the right end opening of the control valve one (1032) is fixedly connected with a liquid outlet pipe two (1033), the rear end of the liquid outlet pipe two (1033) is fixedly connected with a three-way valve two (1034), the rear end of the three-way valve two (1034) is fixedly connected with a liquid inlet pipe two (1035), and the left end of the control valve one (1032) is fixedly connected with a liquid outlet pipe three (1056).

6. The self-cleaning environmentally friendly heat-exchange air source heat pump according to claim 5, characterized in that, The lower end of the water sump one (1022), the reducer (1027) and the three-way valve two (1034) are fixedly connected to the upper end of the mounting plate (1052), the upper end of the control valve one (1032) is fixedly connected to the lower end of the mounting plate (1052) in front, and the right end of the liquid outlet pipe one (1021) is fixedly connected to the left end opening of the water sump one (1022).

7. The self-cleaning environmentally friendly heat-exchange air source heat pump according to claim 5, characterized in that, The right end opening of the control valve two (1043) is fixedly connected with the liquid inlet pipe three (1042), the inside of the control valve two (1043) is fixedly connected with the valve core two (1044), the lower end of the valve core two (1044) is fixedly connected with the valve rod three (1045), the lower end of the valve rod three (1045) is fixedly connected with the belt pulley one (1046), the belt pulley one (1046) is connected with the belt pulley two (1048) through the transmission belt (1047), the middle of the belt pulley two (1048) is fixedly connected to the lower end of the valve rod two (1030), and the left end opening of the control valve two (1043) is fixedly connected with the liquid outlet pipe four (1049), and the upper end of the liquid outlet pipe four (1049) is fixedly connected to the outer periphery of the upper end of the temperature rising pipe (1050).

8. The self-cleaning environmentally friendly heat-exchange air source heat pump according to claim 7, characterized in that, The front end of the rotating shaft one (1024) is fixedly connected to the right end opening of the three-way valve two (1034), and the upper end of the control valve two (1043) is fixedly connected to the lower end of the mounting plate (1052) on the rear side.

9. The self-cleaning environmentally friendly heat-exchange air source heat pump according to claim 5, characterized in that, The scraping assembly comprises two water sumps two (1036) and a scraper (1040), the water sumps two (1036) are fixedly connected to the left end of the inner top front side and the rear end of the inner top rear side of the shell (101) respectively, the inside of the water sumps two (1036) is fixedly connected with the impeller two (1037), the middle of the impeller two (1037) is fixedly connected with the reciprocating screw rod (1038), the lower end of the reciprocating screw rod (1038) is fixedly connected with the driving block (1039), one end of the driving block (1039) close to the evaporator (105) is fixedly connected to both ends of the scraper (1040), the upper end of the scraper (1040) is uniformly provided with the water guide groove (1041), and the both end openings of the water guide groove (1041) are fixedly connected with the drainage tube (1057).

10. The self-cleaning environmentally friendly heat-exchange air source heat pump according to claim 9, characterized in that, The upper end of the drainage tube (1057) is fixedly connected to the other end opening of the water sump two (1036), the lower end of the return tube (1053) is fixedly connected to the upper end opening of the four-way valve (1055), and the lower end of the reciprocating screw rod (1038) is rotatably connected to the inner lower side of the shell (101) through the bearing.

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