Energy-saving air heat pump

Abstract

The invention relates to the technical field of air heat pumps, in particular to an energy-saving air heat pump which comprises a mounting box, and a supporting plate is fixedly connected to the inner wall of the mounting box; the circulating mechanism is arranged in the mounting box, the circulating mechanism is used for circulating a refrigerant, and the circulating mechanism comprises an evaporation assembly used for the refrigerant to absorb heat, a compression assembly used for compressing the gas refrigerant, a condenser used for releasing the heat of the refrigerant, and an expansion valve used for controlling the flow and the pressure of the refrigerant; when the refrigerant is transmitted to the detection box, the water absorption sponge adsorbs the liquid refrigerant which is not completely vaporized, the water absorption sponge moves downwards after adsorbing the liquid refrigerant, the L-shaped conducting strip is driven to slide on the resistance plate to change the current, and after the PLC detects the current change, measures can be taken to prevent frost from being formed, and normal vaporization of the liquid refrigerant is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of air heat pumps, and in particular to an energy-saving air heat pump. Background Art

[0002] A heat pump is a device that can absorb heat from low-temperature heat sources such as air, water or soil in nature, and transfer the heat to a high-temperature heat source through an electrically driven compressor. It uses the reverse Carnot cycle as a principle to achieve "transportation" of heat, and can be used for heating, cooling, and domestic hot water supply. It has the advantages of high efficiency, energy saving, and environmental protection, and is widely used in household, commercial, and industrial fields. However, heat pumps are also affected by ambient temperature. For example, an air source heat pump for low-temperature environments disclosed in application number CN202410225017.0 is a heat pump that is improved to address the impact of ambient temperature on heat pumps.

[0003] And heat pumps are characterized by low-potential heat sources. The reasons are as follows: air, water or soil in nature are all low-potential heat sources. They contain a lot of thermal energy, but this thermal energy is at a relatively low temperature and energy grade. The uniqueness of heat pumps lies in the ability to extract heat from these low-potential heat sources through specific technical means, and raise it to a usable high temperature level, thereby realizing the transfer of heat from low temperature to high temperature. This is an important feature that distinguishes heat pumps from other traditional heating or cooling equipment.

[0004] In some cold regions, the evaporator temperature of the existing air source heat pump is close to the outside air temperature. When the outside temperature is low, the refrigerant is not completely vaporized in the evaporator tube. Since the vaporization process of the refrigerant is the key link in absorbing heat, incomplete vaporization will lead to a reduction in the absorbed heat. When the refrigerant is not completely vaporized, the refrigerant entering the compressor may contain liquid components. It is very unfavorable for liquid refrigerant to enter the compressor because the compressor is mainly used to compress gaseous refrigerant. Liquid refrigerant entering the compressor may cause liquid hammer, resulting in damage to the compressor.

[0005] At low temperatures, the evaporation temperature of the air source heat pump decreases, the specific volume of the refrigerant increases, the suction mass flow rate decreases, and the compressor compresses at a constant power, which will result in insufficient heating capacity and make it difficult to meet indoor heating needs. Secondly, the lower evaporation temperature increases the compression ratio and the compressor exhaust temperature increases, which may cause the compressor performance to decline and the efficiency to decrease. Being in this state for a long time will shorten the service life of the compressor. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides an energy-saving air heat pump, which can effectively solve the problems in the prior art that the outside temperature is too cold, resulting in incomplete vaporization of the refrigerant liquid, and the compression ratio of the compressor cannot be adaptively adjusted according to the outside temperature.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides an energy-saving air heat pump, comprising:

[0009] An installation box, wherein the inner wall of the installation box is fixedly connected with a support plate;

[0010] A circulation mechanism, which is arranged inside the installation box and is used to circulate the refrigerant. The circulation mechanism includes an evaporation component for the refrigerant to absorb heat, a compression component for compressing the gas refrigerant, a condenser for releasing the heat of the refrigerant, and an expansion valve for controlling the flow and pressure of the refrigerant;

[0011] The compression assembly is arranged on the top of the support plate, and the compression assembly includes a compression block, the inner wall of the compression block is provided with a cylindrical extrusion cavity, the inner circumferential wall of the extrusion cavity near the bottom end is fixedly connected with a sealing ring, the inner wall of the extrusion cavity is airtightly slidably connected with a piston, the interior of the compression block is provided with a power cavity communicated with the extrusion cavity, a power structure is arranged in the power cavity, and the compression assembly also includes a processing structure, and the processing structure is used to process the refrigerant that is not completely vaporized.

[0012] Preferably, the evaporation component includes a vent opened on the outer wall of the installation box, the inner wall of the vent is fixedly connected to a fixing frame, the inner wall of the fixing frame is fixedly connected to a plurality of linear array inclined fins, and the inclined fins are inclined downward, and the outer wall of the inclined fins inside the installation box is fixedly connected to an evaporation copper tube.

[0013] Preferably, the circulation mechanism also includes a first gas-liquid mixed pump fixedly connected to the top of the support plate, the water pumping end of the first gas-liquid mixed pump is fixedly connected to the water outlet end of the evaporation copper tube, the output end of the first gas-liquid mixed pump is fixedly connected to a detection box, the bottom end of the support plate is fixedly connected to a second gas-liquid mixed pump, the air pumping end of the second gas-liquid mixed pump is fixedly connected to an air pumping copper tube, the air pumping copper tube is fixedly connected to an extrusion chamber, the drainage end of the second gas-liquid mixed pump is fixedly connected to a drainage copper tube, the other end of the drainage copper tube is fixedly connected to an expansion valve, the other end of the expansion valve is fixedly connected to a connecting copper tube, the connecting copper tube passes through the outer wall of the installation box and is fixedly connected to the water inlet end of the condenser, the water inlet end of the evaporation copper tube is fixedly connected to the water outlet end of the condenser, and an electromagnetic pressure valve is provided at the position where the air pumping copper tube is connected to the extrusion chamber, and the expansion valve, the first gas-liquid mixed pump, the second gas-liquid mixed pump, and the electromagnetic pressure valve are electrically connected to a PLC controller to form a circulation loop.

[0014] Preferably, the power structure includes a moving rod fixedly connected to the bottom end of the piston and connected to the sealing ring in an airtight sliding manner, a first motor fixedly connected to the inner bottom wall of the power chamber, a rotating shaft fixedly connected to the output end of the first motor, an eccentric wheel fixedly connected to the outer wall of the rotating shaft, a rotating rod rotatably connected to the inner wall of the power chamber, a lever fixedly connected to the outer wall of the rotating rod, a connecting frame fixedly connected to one end of the lever close to the rotating rod, a connecting rod rotatably connected between the connecting frame and the moving rod, and a C-shaped frame fixedly connected to the other end of the lever, and the inner wall of the C-shaped frame is in contact with the outer wall of the eccentric wheel.

[0015] Preferably, the processing structure includes a moving groove formed on the inner top wall of the detection box, the inner top wall of the moving groove is fixedly connected to two symmetrical springs, the bottom ends of the two springs are fixedly connected to a moving block, the top end of the moving block is fixedly connected to an L-shaped conductive sheet, the inner top wall of the moving groove is fixedly connected to a resistor plate that is in sliding contact with the L-shaped conductive sheet, the L-shaped conductive sheet and the resistor plate constitute a sliding rheostat, the inner bottom wall of the detection box is formed with an extrusion groove that communicates with the outside, the inner wall of the extrusion groove is slidably connected to a sliding plate, and the sliding plate is connected to the moving block A water-absorbing sponge is fixedly connected between the detection box, an inclined water storage tank is opened on the inner wall of the detection box, a water outlet is opened on the inner bottom wall of the inclined water storage tank, a solenoid valve is arranged inside the water outlet, an air intake copper tube is fixedly connected between the detection box and the extrusion chamber, a one-way valve is arranged at the position where the air intake copper tube is connected to the extrusion chamber, the L-shaped conductive sheet, the resistor plate, the first motor, the solenoid valve and the PLC controller are electrically connected to form a first processing loop, and the resistance in the first processing loop gradually decreases during the sliding of the L-shaped conductive sheet on the resistor plate toward the bottom.

[0016] Preferably, a first sliding groove is provided on the inner wall of the extrusion chamber, a C-shaped magnetic block is slidably connected to the inner wall of the first sliding groove, the inner wall of the C-shaped magnetic block is in contact with the outer wall of the eccentric wheel, a second sliding groove is provided on the outer wall of the compression block, an electromagnetic block that is magnetically attracted to the C-shaped magnetic block is slidably connected to the inner wall of the second sliding groove, an L-shaped support rod is fixedly connected to the outer wall of the electromagnetic block, and a water squeezing block that is airtightly slidably connected to the extrusion groove is fixedly connected to the top end of the L-shaped support rod.

[0017] Preferably, a processing chamber is opened on the inner wall of the compression block, and the processing chamber is located outside the extrusion chamber. The inner wall of the processing chamber is fixedly connected with a transfer copper tube, and the outer wall of the compression block is fixedly connected with a water pump. The drainage end of the water pump is fixedly connected with a connecting pipe, and the connecting pipe is fixedly connected with the water inlet of the transfer copper tube. The drainage end of the water pump is fixedly connected with the water inlet of the transfer copper tube, and the other end of the transfer copper tube is fixedly connected with a gas transmission copper tube. A one-way valve is provided in the gas transmission copper tube, and the gas transmission copper tube is fixedly connected with the gas intake copper tube. The PLC controller is fixedly connected with the electromagnetic block and the water pump to form a second processing loop.

[0018] Preferably, a cleaning shell is fixedly connected to the outer wall of the installation box on one side close to the air inlet, a connecting groove is opened at the bottom end of the cleaning shell, a reciprocating screw is rotatably connected to the inner wall of the cleaning shell, the outer wall of the cleaning shell is fixedly connected to the second motor that drives the reciprocating screw, a reciprocating block is sleeved on the outer wall of the reciprocating block, a cleaning rod slidably connected to the connecting groove is fixedly connected to the outer wall of the cleaning rod, a plurality of cleaning plates are fixedly connected to the outer wall of the cleaning rod, the upper and lower ends of the inclined fins are in sliding contact with the cleaning plates, a heating plate is arranged inside the cleaning plates, a solar panel and a power storage block are fixedly connected to the outer wall of the installation box on one side close to the cleaning shell, the solar panel, the power storage block, the heating plate, the second motor are electrically signal-connected to the PLC controller to form a cleaning circuit.

[0019] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0020] 1. When the refrigerant is transmitted to the detection box, the water-absorbing sponge will absorb the liquid refrigerant that has not been completely vaporized. After absorbing the liquid refrigerant, the water-absorbing sponge will move downward, driving the L-shaped conductive sheet to slide on the resistor plate to change the current. After the PLC controller detects the current change, it can take measures to prevent the formation of frost to ensure the normal vaporization of the liquid refrigerant. When the water absorption of the water-absorbing sponge is about to reach the threshold, the L-shaped conductive sheet separates from the resistor plate, and the PLC controller energizes the electromagnetic block, which drives the squeezing block to squeeze the water-absorbing sponge upward, squeezing the liquid refrigerant into the inclined water storage tank, and then the liquid refrigerant is pumped out and discharged into the transfer copper tube through a water pump. The liquid refrigerant is vaporized by the heat generated by the movement of the piston, and then the vaporized refrigerant is transferred to the intake copper tube for normal circulation, thereby preventing the liquid refrigerant from entering the compressor.

[0021] 2. When the outside temperature is too cold, the heating plate in the cleaning plate can only assist in defrosting but cannot assist in the vaporization of liquid refrigerant. The absorbent sponge will absorb more liquid refrigerant, causing the current passing through the sliding rheostat to change more. After the PLC controller detects this, it will reduce the speed of the first motor, thereby reducing the compression ratio of the compression component. After reducing the compression ratio, the compression component can use more energy to process the refrigerant that can be vaporized normally, avoiding the compressor from doing useless work and improving the energy efficiency of the system. At the same time, reducing the compression ratio helps to improve the circulation state of the refrigerant. When the outside temperature is too low and the vaporization process of the refrigerant is inhibited, the refrigerant can flow more smoothly in the system, avoiding the problem of excessive or low local pressure due to poor refrigerant circulation, further improving the energy efficiency of the system.

[0022] 3. The reciprocating screw is driven by the second motor, and the reciprocating block on the reciprocating screw drives the cleaning rod and the cleaning plate. A heating plate is arranged inside the cleaning plate. When the PLC controller detects that the outside temperature is low and the refrigerant vaporization is incomplete, it will control the second motor to start and the heating plate to heat. The cleaning rod drives the cleaning plate to clean the inclined fins to prevent frost or remove frost after frost. The heating plate heats the inclined fins, and the heat can also be transferred to the evaporating copper tube to assist the vaporization of the liquid refrigerant, thereby ensuring normal heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0025] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention;

[0026] Figure 3 It is a schematic diagram of a cross-sectional three-dimensional structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the internal three-dimensional structure of the present invention;

[0028] Figure 5 It is a partial three-dimensional structural schematic diagram of the present invention;

[0029] Figure 6 The cross-sectional three-dimensional structure diagram of the detection box of the present invention is shown in FIG. Figure 1 ;

[0030] Figure 7 The cross-sectional three-dimensional structure diagram of the detection box of the present invention is shown in FIG. Figure 2 ;

[0031] Figure 8 It is a schematic diagram of the cross-sectional three-dimensional structure of the compression block of the present invention;

[0032] Fig. 9 It is a schematic diagram of a partial cross-sectional three-dimensional structure of a compression block of the present invention.

[0033] Figure numerals: 1, installation box; 2, support plate; 3, circulation mechanism; 31, evaporation assembly; 311, vent; 312, fixed frame; 313, inclined fin; 314, evaporation copper tube; 32, compression assembly; 321, compression block; 322, extrusion chamber; 323, sealing ring; 324, piston; 325, power chamber; 326, power structure; 3261, moving rod; 3262, first motor; 3263, eccentric wheel; 3264, rotating rod; 3265, lever; 3266, connecting frame; 3267, C-shaped frame; 327, processing structure; 3271, moving groove; 3272, spring; 3273, L-shaped conductive sheet; 3274, resistor plate; 3275, extrusion groove; 3276, sliding plate; 3277, water-absorbing sponge; 3278, inclined water storage tank; 3279, water outlet; 32710, air inlet copper pipe; 32711, first sliding groove; 32712, second sliding groove; 32713, electromagnetic block; 32714, L-shaped support rod; 32715, water squeezing block; 32716, processing chamber; 32717, transfer copper pipe; 32718, water pump; 32719, connecting pipe; 32720, air delivery copper pipe; 32721, transfer Moving block; 32722, C-shaped magnetic block; 33, condenser; 34, expansion valve; 35, first gas-liquid mixed pump; 36, detection box; 37, second gas-liquid mixed pump; 38, exhaust copper pipe; 39, drainage copper pipe; 310, connecting copper pipe; 4, cleaning shell; 5, connecting groove; 6, reciprocating screw rod; 7, second motor; 8, cleaning rod; 9, cleaning plate; 10, solar panel; 11, power storage block. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present invention will be further described below in conjunction with the embodiments.

[0036] Example: Refer to Figures 1 to 9 , an energy-saving air heat pump, comprising:

[0037] An installation box 1, the inner wall of which is fixedly connected with a support plate 2;

[0038] The refrigerant is circulated through the circulation mechanism 3 to complete the heat absorption and heat release process. Figure 1 , Figures 3 to 9 The circulation mechanism 3 is arranged inside the installation box 1. The circulation mechanism 3 is used to circulate the refrigerant. The circulation mechanism 3 includes an evaporation component 31 for the refrigerant to absorb heat, a compression component 32 for compressing the gas refrigerant, a condenser 33 for releasing the heat of the refrigerant, and an expansion valve 34 for controlling the flow and pressure of the refrigerant. The expansion valve 34 is used to throttle, depressurize and cool the high-temperature and high-pressure liquid refrigerant coming out of the condenser 33. This is because the refrigerant entering the evaporator needs to be in a low-temperature and low-pressure state so that it can absorb heat. After being processed by the expansion valve 34, the pressure and temperature of the liquid refrigerant are reduced to become a low-temperature and low-pressure liquid refrigerant;

[0039] The circulation mechanism 3 further includes a first gas-liquid mixed pump 35 fixedly connected to the top of the support plate 2, the water pumping end of the first gas-liquid mixed pump 35 is fixedly connected to the water outlet end of the evaporation copper tube 314, the output end of the first gas-liquid mixed pump 35 is fixedly connected to a detection box 36, the bottom end of the support plate 2 is fixedly connected to a second gas-liquid mixed pump 37, the gas pumping end of the second gas-liquid mixed pump 37 is fixedly connected to a gas pumping copper tube 38, the gas pumping copper tube 38 is fixedly connected to the extrusion chamber 322, the drainage end of the second gas-liquid mixed pump 37 is fixedly connected to a drainage copper tube 39, and the other end of the drainage copper tube 39 is connected to the expansion valve 34 is fixedly connected, and the other end of the expansion valve 34 is fixedly connected with a connecting copper tube 310, which passes through the outer wall of the installation box 1 and is fixedly connected with the water inlet end of the condenser 33, and the water inlet end of the evaporation copper tube 314 is fixedly connected with the water outlet end of the condenser 33. The part where the exhaust copper tube 38 is connected with the extrusion chamber 322 is provided with an electromagnetic pressure valve, and the expansion valve 34, the first gas-liquid mixed pump 35, the second gas-liquid mixed pump 37, and the electromagnetic pressure valve are electrically connected with a PLC controller to form a circulation loop. The above two gas-liquid mixed pumps are a kind of pumps that can extract gas and liquid at the same time. Its working principle is based on a special impeller design or internal structure, and can transport gas-liquid mixture at the same time.

[0040] The refrigerant absorbs heat and vaporizes through the evaporation component 31. Figure 3 , Figure 4The evaporation component 31 includes a vent 311 opened on the outer wall of the installation box 1, and the inner wall of the vent 311 is fixedly connected to a fixing frame 312, and the inner wall of the fixing frame 312 is fixedly connected to a plurality of linear array inclined fins 313, and the inclined fins 313 are inclined downward, and the outer wall of the inclined fins 313 inside the installation box 1 is fixedly connected to an evaporation copper tube 314, and the inclined fins 313 are used to collect conduction heat.

[0041] The vaporized refrigerant is compressed by the compression assembly 32. Figures 5 to 9 The compression assembly 32 is arranged on the top of the support plate 2, and the compression assembly 32 includes a compression block 321. The inner wall of the compression block 321 is provided with a cylindrical extrusion chamber 322. The inner circumferential wall of the extrusion chamber 322 near the bottom end is fixedly connected with a sealing ring 323. The inner wall of the extrusion chamber 322 is airtightly slidably connected with a piston 324. The interior of the compression block 321 is provided with a power chamber 325 that communicates with the extrusion chamber 322. A power structure 326 is arranged in the power chamber 325. The compression assembly 32 also includes a processing structure 327, and the processing structure 327 is used to process the refrigerant that is not completely vaporized.

[0042] The power structure 326 provides compression power to the compression assembly, see Fig. 9 The power structure 326 includes a moving rod 3261 fixedly connected to the bottom end of the piston 324 and connected to the sealing ring 323 in an airtight sliding manner, a first motor 3262 fixedly connected to the inner bottom wall of the power chamber 325, a rotating shaft fixedly connected to the output end of the first motor 3262, an eccentric wheel 3263 fixedly connected to the outer wall of the rotating shaft, a rotating rod 3264 rotatably connected to the inner wall of the power chamber 325, a lever 3265 fixedly connected to the outer wall of the rotating rod 3264, a connecting frame 3266 fixedly connected to one end of the lever 3265 close to the rotating rod 3264, a connecting rod rotatably connected between the connecting frame 3266 and the moving rod 3261, a C-shaped frame 3267 fixedly connected to the other end of the lever 3265, and the inner wall of the C-shaped frame 3267 contacts the outer wall of the eccentric wheel 3263.

[0043] The incompletely vaporized refrigerant is re-evaporated by the processing structure 327, referring to Figures 5 to 8The processing structure 327 includes a moving groove 3271 provided on the inner top wall of the detection box 36, two symmetrical springs 3272 are fixedly connected to the inner top wall of the moving groove 3271, a moving block 32721 is fixedly connected to the bottom ends of the two springs 3272, an L-shaped conductive sheet 3273 is fixedly connected to the top of the moving block 32721, a resistor plate 3274 that is in sliding contact with the L-shaped conductive sheet 3273 is fixedly connected to the inner top wall of the moving groove 3271, the L-shaped conductive sheet 3273 and the resistor plate 3274 constitute a sliding rheostat, an extrusion groove 3275 that communicates with the outside is provided on the inner bottom wall of the detection box 36, a sliding plate 3276 is slidably connected to the inner wall of the extrusion groove 3275, and the sliding plate 3276 and the moving block A water-absorbing sponge 3277 is fixedly connected between 32721, an inner wall of the detection box 36 is provided with an inclined water storage tank 3278, an inner bottom wall of the inclined water storage tank 3278 is provided with a water outlet 3279, and a solenoid valve is arranged inside the water outlet 3279, an air intake copper tube 32710 is fixedly connected between the detection box 36 and the extrusion chamber 322, a one-way valve is arranged at the portion where the air intake copper tube 32710 is connected to the extrusion chamber 322, the L-shaped conductive sheet 3273, the resistor plate 3274, the first motor 3262, the solenoid valve and the PLC controller are electrically connected to form a first processing loop, and the resistance in the first processing loop gradually decreases during the sliding of the L-shaped conductive sheet 3273 downward on the resistor plate 3274.

[0044] Among them, a first sliding groove 32711 is opened on the inner wall of the extrusion cavity 322, and the inner wall of the first sliding groove 32711 is slidably connected with a C-shaped magnetic block 32722, and the inner wall of the C-shaped magnetic block 32722 contacts the outer wall of the eccentric wheel 3263. A second sliding groove 32712 is opened on the outer wall of the compression block 321, and the inner wall of the second sliding groove 32712 is slidably connected with an electromagnetic block 32713 that is magnetically attracted to the C-shaped magnetic block 32722, and the outer wall of the electromagnetic block 32713 is fixedly connected with an L-shaped support rod 32714, and the top of the L-shaped support rod 32714 is fixedly connected with a water squeezing block 32715 that is airtightly slidably connected to the extrusion groove 3275.

[0045] The inner wall of the compression block 321 is provided with a processing chamber 32716, the processing chamber 32716 is located outside the extrusion chamber 322, the inner wall of the processing chamber 32716 is fixedly connected with a transfer copper tube 32717, the outer wall of the compression block 321 is fixedly connected with a water pump 32718, the drainage end of the water pump 32718 is fixedly connected with a connecting pipe 32719, the connecting pipe 32719 is fixedly connected with the water inlet of the transfer copper tube 32717, and the drainage end of the water pump 32718 is fixedly connected with a connecting pipe 32719. The water end is fixedly connected to the water inlet of the transfer copper tube 32717, the other end of the transfer copper tube 32717 is fixedly connected to the gas transmission copper tube 32720, a one-way valve is provided in the gas transmission copper tube 32720, the gas transmission copper tube 32720 is fixedly connected to the gas intake copper tube 32710, the PLC controller is fixedly connected to the electromagnetic block 32713 and the water pump 32718 to form a second processing loop, wherein the PLC controller is a programmable logic controller (Programmab le Logic Controltro ll er).

[0046] The following specific structure is used to defrost and de-ice the inclined fins 313 in cold weather. Figure 2 A cleaning shell 4 is fixedly connected to the outer wall of the installation box 1 on one side near the air inlet, a connecting groove 5 is opened at the bottom end of the cleaning shell 4, the inner wall of the cleaning shell 4 is rotatably connected to a reciprocating screw 6, the outer wall of the cleaning shell 4 is fixedly connected to a second motor 7 that drives the reciprocating screw 6, a reciprocating block is sleeved on the outer wall of the reciprocating block, a cleaning rod 8 slidably connected to the connecting groove 5 is fixedly connected to the outer wall of the cleaning rod 8, a plurality of cleaning plates 9 are fixedly connected to the outer wall of the cleaning rod 8, the upper and lower ends of the inclined fins 313 are in sliding contact with the cleaning plates 9, a heating plate is arranged in the cleaning plates 9, a solar panel 10 and a power storage block 11 are fixedly connected to the outer wall of the installation box 1 on one side near the cleaning shell 4, the solar panel 10, the power storage block 11, the heating plate, the second motor 7 are electrically connected to the PLC controller by signal to form a cleaning circuit.

[0047] The working principle of the present invention is as follows:

[0048] First, when the heat pump needs to heat, first, start the first gas-liquid mixed pump 35 and the second gas-liquid mixed pump 37. The purpose of starting these two pumps is to promote the circulation of refrigerant in the system to achieve heat transfer. The first gas-liquid mixed pump 35 starts to work and extracts the refrigerant in the evaporation copper tube 314. This is because the refrigerant in the evaporation copper tube 314 is in a low temperature and low pressure state, and it needs to be transported to subsequent components for processing to increase the temperature and pressure. The extracted refrigerant is discharged into the detection box 36, and then the refrigerant is discharged from the detection box 36 into the extrusion chamber 322. In the extrusion chamber 322, the refrigerant will be compressed. Its purpose is to increase the temperature and pressure of the gas refrigerant to prepare for the subsequent release of heat. According to the principles of thermodynamics, compressing the gas will increase its internal energy, which is manifested as increased temperature and increased pressure.

[0049] Afterwards, the second gas-liquid mixed pump 37 starts to work. It extracts the gas refrigerant compressed by the compression component 32. Since the gas refrigerant compressed by the compression component 32 is in a high temperature and high pressure state, the second gas-liquid mixed pump 37 transfers the extracted high temperature and high pressure gas refrigerant to the condenser 33 through the drainage copper pipe 39. The function of the condenser 33 is to release heat. Here, the high temperature and high pressure gas refrigerant transfers heat to the surrounding medium. For example, in an air source heat pump, the heat is transferred to the air, thereby realizing the heating function. At the same time, in the condenser 33, the gas refrigerant gradually liquefies due to the release of heat.

[0050] Next, the liquid refrigerant is transmitted from the condenser 33 to the expansion valve 34. The role of the expansion valve 34 is crucial. It throttles, reduces the pressure and cools the high-temperature and high-pressure liquid refrigerant coming out of the condenser 33. This is because the refrigerant entering the evaporator needs to be in a low-temperature and low-pressure state so that it can absorb heat. After being processed by the expansion valve 34, the pressure and temperature of the liquid refrigerant are reduced to become a low-temperature and low-pressure liquid refrigerant. Finally, the reduced-pressure and cooled liquid refrigerant is transmitted to the evaporation copper tube 314 through the connecting copper tube 310. In the evaporation copper tube 314, the liquid refrigerant absorbs heat from the surrounding environment (absorbs heat through the inclined fins 313 and transfers it to the evaporation copper tube 314), and vaporizes into a gaseous refrigerant again, thereby completing the entire heating cycle and continuously providing power for the heat pump heating.

[0051] When the external environment is low, the liquid refrigerant in the evaporating copper tube 314 cannot be completely vaporized. The reason is that in the heat pump system, the vaporization of the liquid refrigerant in the evaporating copper tube 314 is an endothermic process, which is constrained by the Clausius-Clapeyron equation and is closely related to temperature and pressure. When the external environment temperature is low, the temperature difference between the liquid refrigerant and the outside becomes smaller, the heat absorption is insufficient, and the saturated vapor pressure decreases with the decrease in temperature, making it difficult to meet the vaporization conditions, resulting in incomplete vaporization. In addition, different refrigerants have different boiling points and critical temperatures. For the refrigerant R134A (existing refrigerant, no further explanation here), this situation is prone to occur when the external temperature is lower than about -10°C.

[0052] The process of the compression assembly 32 compressing the refrigerant gas is as follows:

[0053] By starting the first motor 3262, the first motor 3262 is driven to rotate, and the eccentric wheel 3263 is driven to rotate through the rotating shaft, and the C-shaped frame 3267 is moved up and down through the rotation of the eccentric wheel 3263, and then the other end of the lever 3265 is used to drive the moving rod 3261 to move up and down through the lever principle. Since the rotating point of the lever 3265 is close to the C-shaped frame 3267, even if the up and down movement range of the C-shaped frame 3267 is small, the moving rod 3261 is used to drive the piston 324 to move up and down in a large range through the lever 3265 principle. The piston 324 moves downward, and the gas refrigerant in the intake copper tube 32710 is drawn into the extrusion chamber 322 through the one-way valve. The piston 324 moves upward to squeeze the gas refrigerant. When the gas pressure reaches the preset value of the electromagnetic pressure valve, the high-temperature and high-pressure gas refrigerant will be squeezed into the exhaust copper tube 38, and then circulated.

[0054] Therefore, after the refrigerant is transmitted to the detection box 36, the liquid refrigerant that is not completely vaporized will be absorbed by the water-absorbing sponge 3277. Since the water-absorbing sponge 3277 absorbs the liquid refrigerant, the water-absorbing sponge 3277 will move downward, thereby driving the moving block 32721 to move downward synchronously, thereby driving the L-shaped conductive sheet to slide downward on the resistor plate 3274, thereby changing the current passing through the sliding rheostat. The current passing through the sliding rheostat is detected by the current detection module in the PLC controller. When it is detected that the current of the sliding rheostat changes, it means that the refrigerant is not completely vaporized due to the low external temperature. Therefore, it is necessary to control the second motor 7 to start through the PLC controller, and control the heating sheet to start heating;

[0055] The second motor 7 is started to start, which in turn drives the reciprocating screw 6 to rotate. The connecting groove 5 limits the cleaning rod 8, so that the cleaning rod 8 moves back and forth in the connecting groove 5, and then the cleaning rod 8 drives the cleaning plate 9 to clean the inclined fins 313 to prevent frost, or remove frost if frost has formed. In this process, the inclined fins 313 are heated by the heating plate. When frost is present, the heating of the heating plate can assist the cleaning plate 9 to remove frost, and the heat can also be transferred to the evaporation copper tube 314 through the inclined fins 313 to assist the vaporization of the liquid refrigerant (because the heating capacity of the heating plate is not very large, it can only slightly assist the vaporization of the liquid refrigerant. The reason is that the electricity of the heating plate is stored in the power storage block 11 through the current generated by the solar panel 10 to power the heating plate). By removing the frost or preventing frost, the normal vaporization of the liquid refrigerant can be ensured.

[0056] However, if the outside temperature is too cold, the heating plate in the cleaning plate 9 can only assist in defrosting, but cannot assist in vaporizing the liquid refrigerant. Therefore, more liquid refrigerant cannot be vaporized, so the water-absorbing sponge 3277 will absorb more liquid refrigerant (the temperature is proportional to the amount of liquid refrigerant absorbed by the water-absorbing sponge 3277), making the current passing through the sliding rheostat change more. Therefore, the speed of the first motor 3262 needs to be reduced through the PLC controller (the temperature is proportional to the speed of the first motor 3262) to reduce the compression ratio of the compression assembly 32. When the outside temperature is too cold, reducing the compression ratio can make the heat pump system operate under more reasonable working conditions. Since liquid refrigerant is difficult to completely vaporize, maintaining a high compression ratio will cause the compressor to do useless work, because the compression component 32 needs to consume energy to compress the liquid refrigerant that cannot effectively participate in the circulation. After reducing the compression ratio, the compression component 32 can use more energy to process the refrigerant that can be vaporized normally, thereby improving the energy efficiency of the system. Reducing the compression ratio helps to improve the circulation state of the refrigerant. When the outside temperature is too low, the vaporization process of the refrigerant is inhibited. By reducing the compression ratio, the flow of the refrigerant in the system can be smoother, which can avoid the problem of excessive or low local pressure caused by poor refrigerant circulation.

[0057] When the water absorption of the water-absorbing sponge 3277 is about to reach the threshold, the L-shaped conductive sheet 3273 will separate from the resistor plate 3274 and no longer contact each other. When the PLC controller detects that there is no current passing through the sliding rheostat, the electromagnetic block 32713 is energized through the PLC controller. Therefore, when the C-shaped magnetic block 32722 is driven up and down by the eccentric wheel 3263, the electromagnetic block 32713 is driven to move up and down synchronously (the power-on time is the minimum time that the electromagnetic block 32713 can follow the reciprocating movement of the C-shaped magnetic block 32722 on one side). The electromagnetic block 32713 drives the L-shaped support rod 32714 to move up and down synchronously, thereby driving the squeezing block 32715 to squeeze the water-absorbing sponge 3277 upward, thereby The liquid refrigerant absorbed by the water-absorbing sponge 3277 is squeezed out and then flows into the inclined water storage tank 3278. At the same time, the water pump 32718 is started and the solenoid valve is opened through the PLC controller. The liquid refrigerant in the inclined water storage tank 3278 is pumped out by the water pump 32718 and then discharged into the transfer copper tube 32717. The transfer copper tube 32717 is in close contact with the processing chamber 32716. Therefore, the heat generated when the piston 324 moves will be transferred to the transfer copper tube 32717, and then the liquid refrigerant in the transfer copper tube 32717 will be vaporized, and then the vaporized liquid refrigerant will be transferred to the gas transmission copper tube 32720, and then gathered to the air intake copper tube 32710, and then it will operate normally.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An energy-saving air heat pump, characterized in that: include: An installation box (1), wherein the inner wall of the installation box (1) is fixedly connected to a support plate (2); A circulation mechanism (3), the circulation mechanism (3) being arranged inside the installation box (1), the circulation mechanism (3) being used to circulate the refrigerant, the circulation mechanism (3) comprising an evaporation component (31) for the refrigerant to absorb heat, a compression component (32) for compressing the gas refrigerant, a condenser (33) for releasing heat from the refrigerant, and an expansion valve (34) for controlling the flow rate and pressure of the refrigerant; The compression assembly (32) is arranged on the top of the support plate (2), and the compression assembly (32) comprises a compression block (321). The inner wall of the compression block (321) is provided with a cylindrical extrusion cavity (322), and the inner peripheral wall of the extrusion cavity (322) near the bottom end is fixedly connected with a sealing ring (323). The inner wall of the extrusion cavity (322) is airtightly slidably connected with a piston (324). The interior of the compression block (321) is provided with a power cavity (325) which is in communication with the extrusion cavity (322), and a power structure (326) is arranged in the power cavity (325). The compression assembly (32) further comprises a processing structure (327), and the processing structure (327) is used to process the refrigerant which is not completely vaporized.

2. An energy-saving air heat pump according to claim 1, characterized in that: The evaporation component (31) comprises a vent (311) opened on the outer wall of the installation box (1); the inner wall of the vent (311) is fixedly connected to a fixing frame (312); the inner wall of the fixing frame (312) is fixedly connected to a plurality of linear array inclined fins (313), and the inclined fins (313) are inclined downward; the outer wall of the inclined fins (313) inside the installation box (1) is fixedly connected to an evaporation copper tube (314).

3. An energy-saving air heat pump according to claim 1, characterized in that: The circulation mechanism (3) further comprises a first gas-liquid mixed pump (35) fixedly connected to the top of the support plate (2); a water pumping end of the first gas-liquid mixed pump (35) is fixedly connected to a water outlet end of the evaporation copper tube (314); an output end of the first gas-liquid mixed pump (35) is fixedly connected to a detection box (36); a second gas-liquid mixed pump (37) is fixedly connected to the bottom end of the support plate (2); a gas pumping end of the second gas-liquid mixed pump (37) is fixedly connected to a gas pumping copper tube (38); the gas pumping copper tube (38) is fixedly connected to the extrusion chamber (322); a drainage end of the second gas-liquid mixed pump (37) is fixedly connected to a drainage copper tube ( 39), the other end of the drainage copper tube (39) is fixedly connected to the water inlet end of the condenser (33), the water outlet end of the condenser (33) is fixedly connected to an expansion valve (34), the other end of the expansion valve (34) is fixedly connected to a connecting copper tube (310), the other end of the connecting copper tube (310) is fixedly connected to the water inlet end of the evaporation copper tube (314), the portion where the exhaust copper tube (38) is connected to the extrusion chamber (322) is provided with an electromagnetic pressure valve, the expansion valve (34), the first gas-liquid mixed extraction pump (35), the second gas-liquid mixed extraction pump (37), and the electromagnetic pressure valve are electrically connected to a PLC controller to form a circulation loop.

4. The energy-saving air heat pump according to claim 1, characterized in that: The power structure (326) includes a moving rod (3261) fixedly connected to the bottom end of the piston (324) and connected to the sealing ring (323) in an airtight sliding manner, a first motor (3262) fixedly connected to the inner bottom wall of the power chamber (325), a rotating shaft fixedly connected to the output end of the first motor (3262), an eccentric wheel (3263) fixedly connected to the outer wall of the rotating shaft, and a rotating rod (3264) rotatably connected to the inner wall of the power chamber (325). The outer wall of the rotating rod (3264) is fixedly connected to a lever (3265), one end of the lever (3265) close to the rotating rod (3264) is fixedly connected to a connecting frame (3266), a connecting rod is rotatably connected between the connecting frame (3266) and the moving rod (3261), and the other end of the lever (3265) is fixedly connected to a C-shaped frame (3267), and the inner wall of the C-shaped frame (3267) is in contact with the outer wall of the eccentric wheel (3263).

5. An energy-saving air heat pump according to claim 4, characterized in that: The processing structure (327) includes a moving groove (3271) provided on the inner top wall of the detection box (36); two symmetrical springs (3272) are fixedly connected to the inner top wall of the moving groove (3271); the bottom ends of the two springs (3272) are fixedly connected to moving blocks (32721); the top ends of the moving blocks (32721) are fixedly connected to an L-shaped conductive sheet (3273); the inner top wall of the moving groove (3271) is fixedly connected to a resistor plate (3274) in sliding contact with the L-shaped conductive sheet (3273); the L-shaped conductive sheet (3273) and the resistor plate (3274) constitute a sliding rheostat; the inner bottom wall of the detection box (36) is provided with an extrusion groove (3275) communicating with the outside; the inner wall of the extrusion groove (3275) is slidably connected to a sliding plate (3276); the sliding plate (3276) is in sliding contact with the L-shaped conductive sheet (3273); A water-absorbing sponge (3277) is fixedly connected between the moving blocks (32721); an inclined water storage tank (3278) is provided on the inner wall of the detection box (36); a water outlet (3279) is provided on the inner bottom wall of the inclined water storage tank (3278); a solenoid valve is arranged inside the water outlet (3279); an air intake copper tube (32710) is fixedly connected between the detection box (36) and the extrusion chamber (322); a one-way valve is arranged at the portion where the air intake copper tube (32710) is connected to the extrusion chamber (322); the L-shaped conductive sheet (3273), the resistor plate (3274), the first motor (3262), the solenoid valve and the PLC controller are electrically connected to form a first processing loop; and the resistance in the first processing loop gradually decreases during the sliding of the L-shaped conductive sheet (3273) downward on the resistor plate (3274).

6. An energy-saving air heat pump according to claim 5, characterized in that: The inner wall of the extrusion chamber (322) is provided with a first sliding groove (32711), and the inner wall of the first sliding groove (32711) is slidably connected with a C-shaped magnetic block (32722), and the inner wall of the C-shaped magnetic block (32722) contacts the outer wall of the eccentric wheel (3263). The outer wall of the compression block (321) is provided with a second sliding groove (32712), and the inner wall of the second sliding groove (32712) is slidably connected with an electromagnetic block (32713) that is magnetically attracted to the C-shaped magnetic block (32722), and the outer wall of the electromagnetic block (32713) is fixedly connected with an L-shaped support rod (32714), and the top end of the L-shaped support rod (32714) is fixedly connected with a water squeezing block (32715) that is airtightly slidably connected to the extrusion groove (3275).

7. An energy-saving air heat pump according to claim 6, characterized in that: The inner wall of the compression block (321) is provided with a processing chamber (32716), the processing chamber (32716) is located outside the extrusion chamber (322), the inner wall of the processing chamber (32716) is fixedly connected with a transfer copper tube (32717), the outer wall of the compression block (321) is fixedly connected with a water pump (32718), the water pumping end of the water pump (32718) is fixedly connected with the water outlet (3279), and the water discharge end of the water pump (32718) is fixedly connected with a connecting pipe (32719), the connecting pipe (32719) is fixedly connected to the water inlet of the transfer copper pipe (32717), the other end of the transfer copper pipe (32717) is fixedly connected to the gas delivery copper pipe (32720), a one-way valve is provided in the gas delivery copper pipe (32720), the gas delivery copper pipe (32720) is fixedly connected to the air intake copper pipe (32710), the PLC controller is fixedly connected to the electromagnetic block (32713) and the water pump (32718) to form a second processing loop.

8. The energy-saving air heat pump according to claim 2, characterized in that: A cleaning shell (4) is fixedly connected to the outer wall of the installation box (1) on one side close to the air inlet, a connecting groove (5) is provided at the bottom end of the cleaning shell (4), a reciprocating screw (6) is rotatably connected to the inner wall of the cleaning shell (4), the outer wall of the cleaning shell (4) is fixedly connected to a second motor (7) driving the reciprocating screw (6), a reciprocating block is sleeved on the outer wall of the reciprocating screw (6), a cleaning rod (8) slidably connected to the bottom end of the reciprocating block is fixedly connected to the outer wall of the cleaning rod (8), a plurality of cleaning plates (9) are fixedly connected to the outer wall of the cleaning rod (8), the upper end and the lower end of the inclined fin (313) are both in sliding contact with the cleaning plate (9), a heating plate is arranged inside the cleaning plate (9), a solar panel (10) and a power storage block (11) are fixedly connected to the outer wall of the installation box (1) on one side close to the cleaning shell (4), the solar panel (10), the power storage block (11), the heating plate and the second motor (7) are electrically connected to the PLC controller to form a cleaning circuit.

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