Energy-saving refrigeration equipment capable of automatically filling refrigerant

Abstract

The invention provides energy-saving refrigeration equipment with an automatic refrigerant filling function, and relates to the technical field of refrigerant filling. The energy-saving refrigeration equipment with the automatic refrigerant filling function comprises a refrigerant storage mechanism, a temporary storage mechanism and an automatic filling mechanism, the refrigerant storage mechanism comprises a refrigerant storage box, and one end of the refrigerant storage box is fixedly connected with a high-pressure pump. Non-electrified automatic filling is achieved through a pure mechanical linkage structure, the sealing mechanism is driven to be opened and closed through pressure difference, refrigerant filling is accurately completed, electronic equipment is not needed, energy consumption is remarkably reduced, the temporary storage mechanism is in linkage with the inflation wind wheel through the high-pressure pump, the refrigerant can be repeatedly used after being supplemented once, and the pressurization function is synchronously achieved; frequent starting of the high-pressure pump is reduced, energy is further saved, the overall design is compact and efficient, automatic filling and pressure maintaining are achieved through cooperation of pressure difference and machinery, the equipment complexity is simplified, and the efficient, energy-saving and environment-friendly requirements are met.

Description

Technical Field

[0001] The invention relates to the technical field of refrigerant filling, in particular to an energy-saving refrigeration device with automatic refrigerant filling. Background Art

[0002] Refrigeration equipment refers to a series of devices and systems that can achieve refrigeration functions. It consumes a certain amount of energy (such as electrical energy, thermal energy, etc.) and uses the refrigeration cycle process to transfer the heat in the cooled object to the surrounding environment, thereby reducing its temperature to the required level. Common ones include refrigerators, air conditioners, freezers, refrigerated trucks, cold storage, etc. Refrigeration equipment must be filled with refrigerant because refrigerant plays a core role in the operation of refrigeration equipment and is a key substance to achieve refrigeration cycles and refrigeration effects. The essence of refrigeration is the transfer of heat. Refrigerant uses its own properties to continuously change state in the refrigeration cycle to complete the absorption and release of heat. In the evaporator, the low-temperature and low-pressure liquid refrigerant absorbs the heat of the cooled object and vaporizes to achieve the purpose of refrigeration. After that, the gaseous refrigerant becomes liquid again under the action of the compressor, condenser and other components and continues to circulate.

[0003] During the operation of existing refrigeration equipment, when the internal refrigerant is used up, the current method of detecting the amount of refrigerant and the subsequent refrigerant filling has obvious disadvantages. Usually, multiple sets of equipment need to be used in combination, and the operation of these devices individually consumes a lot of electricity and other energy. On the one hand, the simultaneous operation of multiple sets of equipment will inevitably increase the overall energy loss, causing the energy consumption of refrigeration equipment to increase significantly during the refrigerant detection and filling stages; on the other hand, excessive energy consumption not only causes a waste of resources, but also produces more carbon emissions and other pollutants, which is not in line with the current development concept of environmental protection and energy conservation. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides an energy-saving refrigeration device with automatic refrigerant filling, which solves the problems of high energy consumption and environmental protection in the prior art.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an energy-saving refrigeration device with automatic refrigerant filling, comprising a refrigerant storage mechanism, a temporary storage mechanism and an automatic filling mechanism, the refrigerant storage mechanism comprising a refrigerant storage box, one end of the refrigerant storage box is fixedly connected to a high-pressure pump, and the output end and input end of the high-pressure pump are respectively fixedly connected to an output pipe and an input pipe; The temporary storage mechanism includes a temporary storage box, a power chamber is fixedly arranged at the center of the upper end of the temporary storage box, a No. 1 rotating rod is rotatably arranged at the center of the inner wall of one side of the power chamber, the other end of the No. 1 rotating rod passes through the power chamber to the outside of the power chamber, and a large gear is fixedly arranged, and a rotating water wheel is fixedly sleeved on the rod body of the No. 1 rotating rod located inside the power chamber, a pressurized bent pipe is penetrated at the upper end of the outer wall of one side of the temporary storage box, a No. 2 rotating rod is rotatably sleeved at the turning point of the pressurized bent pipe, a small gear and an inflatable wind wheel are respectively fixedly arranged at both ends of the No. 2 rotating rod, a one-way valve is fixedly arranged at the lower end of the pressurized bent pipe and near the temporary storage box, and an injection hole is opened between the temporary storage box and the power chamber.

[0006] Preferably, the automatic filling mechanism comprises an injection pipe, a connecting pipe is fixedly connected to the upper end of the rear side of the injection pipe, and an infrared control valve is fixedly provided on the connecting pipe body near the injection pipe.

[0007] Preferably, a complete sealing piston is provided in a movable sleeve near the upper end of the injection tube, the upper end of the complete sealing piston is fixedly connected to a micro-control bending tube, the lower end of the complete sealing piston is fixedly connected to a connecting block, the lower end of the connecting block is fixedly provided with a semicircular sealing plug, the lower end of the semicircular sealing plug is fixedly connected to a connecting rod, and the lower end of the connecting rod is fixedly connected to a sealing cone.

[0008] Preferably, compression springs are fixedly provided at the front end and the rear end of the lower end surface of the sealing cone, fixed blocks are fixedly provided at the lower ends of the two compression springs, and a sealing seat is provided inside the fixed sleeve of the injection pipe between the semicircular sealing plug and the sealing cone.

[0009] Preferably, the rear end of the connecting pipe is fixedly connected to the front end of the temporary storage box, the upper end of the micro-control bend pipe passes through the bend of the injection pipe and extends to the upper part of the infrared control valve, the connecting point of the injection pipe and the connecting pipe is on the same side as the semicircular sealing plug, the fixed block is fixedly connected to the inner wall of the injection pipe, and the lower end of the injection pipe is connected to the filling port of the refrigeration equipment.

[0010] Preferably, one end of the output pipe away from the high-pressure pump passes through the power chamber, and the outlet thereof faces the rotating water wheel.

[0011] Preferably, the inflatable wind wheel is located inside the pressurized curved pipe, the small gear is located outside the pressurized curved pipe, the small gear is meshed and connected with the large gear, and the injection hole and the output pipe are respectively located on both sides of the rotating water wheel.

[0012] Preferably, a pressure sensor and a flow detector are respectively provided at the upper end of the temporary storage box.

[0013] Working principle: When in use, since the lower part of the injection pipe is connected to the refrigeration equipment, when the refrigerant in the refrigeration equipment is almost consumed, its internal pressure decreases. When the pressure decreases, the sealing cone and the complete sealing piston move down, and the compression spring is compressed (under normal conditions, the sealing seat and the sealing cone are sealed, and the semicircular sealing plug seals the connecting pipe at the same time). When the sealing cone and the complete sealing piston move down, the sealing cone leaves the sealing seat, opening the passage between them, and the semicircular sealing plug leaves the connecting pipe, the connecting pipe is opened, and the micro-control elbow moves down at the same time. When the infrared control valve detects that the distance of the micro-control elbow becomes shorter, the infrared control valve is opened, and the high-pressure refrigerant stored in the temporary storage box is slowly injected into the refrigeration equipment to achieve the function of automatic refrigerant filling. After a certain amount of refrigerant is added, the internal pressure of the refrigeration equipment increases and returns to normal pressure. Under the action of the elastic force of the compression spring, the sealing seat and the sealing cone are sealed, and the semicircular sealing plug seals the connecting pipe at the same time, and the infrared control valve is closed; Secondly, use the pressure sensor and flow detector to detect the internal pressure of the temporary storage box and the amount of refrigerant inside. When the amount of refrigerant is insufficient or the pressure is insufficient, turn on the high-pressure pump, but the high-pressure pump and the infrared control valve cannot be turned on at the same time, and the refrigerant stored in the temporary storage box can provide multiple refills. After the high-pressure pump is turned on, the refrigerant in the normal pressure state inside the refrigerant storage box will first be injected into the power chamber through the input pipe and the output pipe, driving the No. 1 rotating rod to rotate, and then flow into the refrigerant temporary storage box. The rotation of the No. 1 rotating rod drives the large gear to rotate, and the rotation of the large gear drives the small gear to rotate, and the small gear The rotation drives the No. 2 rotating rod to rotate, and the rotation of the No. 2 rotating rod drives the inflation wind wheel to rotate. The one-way valve at the bottom of the pressurized bent pipe can only allow gas to enter but not discharge, and the valve connected to the temporary storage box at the top can only allow gas to enter but not discharge. Therefore, the inflation wind wheel in the middle will absorb external air and inject it into the temporary storage box, so that refrigerant can be filled and pressurized at the same time. When the pressure sensor detects that the internal pressure of the temporary storage box is consistent with the normal pressure inside the refrigeration equipment, the pressurization is stopped immediately and the one-way valve is closed. One-time filling and pressurization can be automatically filled and used multiple times.

[0014] The present invention provides an energy-saving refrigeration device with automatic refrigerant filling. It has the following beneficial effects: The present invention provides an energy-saving refrigeration device with automatic refrigerant filling. The energy-saving refrigeration device with automatic refrigerant filling provided by the present invention takes a pure mechanical linkage structure as its core, realizes automatic filling without electrification through pressure difference drive, and significantly reduces energy consumption. The automatic filling mechanism operates autonomously based on the pressure change inside the refrigeration device: when the refrigerant consumption causes the pressure to drop, the sealing cone and the complete sealing piston compress the spring downward under the action of the pressure difference, and the double seal of the sealing seat and the semicircular sealing plug is synchronously released, connecting the channel of the temporary storage box and the refrigeration device, so that the pre-stored refrigerant of the same pressure is automatically injected under the pressure difference drive. No electronic sensor or control circuit is required in the whole process, and the opening and closing control is realized only through spring reset and pressure balance, which greatly reduces the power consumption. The over-pressure sensor and flow detector intelligently manage the refrigerant reserve. The refrigerant replenished by a single high-pressure pump can form high-pressure storage under the linkage mechanism of the pressurized elbow and the inflation wind wheel to meet multiple automatic filling needs. The high-pressure pump is only started when the storage pressure is insufficient. When it is running, the refrigerant flows through the power chamber to drive the rotating water wheel, and the inflation wind wheel is linked to the gear group to synchronously pressurize the temporary storage box, so that a single high-pressure pump can complete the dual functions of refrigerant replenishment and pressure maintenance, further reducing equipment complexity and energy consumption. The overall design integrates the pressure difference utilization, automatic sealing, and energy storage and pressurization functions through precise coordination of the mechanical structure, ensuring the filling accuracy while completely avoiding the redundant energy consumption problem of multiple devices in parallel, which is in line with the technical development trend of high efficiency, energy saving and low carbon environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front axonometric schematic diagram of the present invention; Figure 2 It is a top axonometric schematic diagram of the present invention; Figure 3 It is a schematic diagram of the front section axonometric measurement of the present invention; Figure 4 It is an axonometric schematic diagram of the automatic filling mechanism of the present invention; Figure 5 It is a schematic cross-sectional isometric diagram of the automatic filling mechanism of the present invention; Figure 6 It is an axonometric schematic diagram of the semicircular sealing plug of the present invention.

[0016] Among them, 1. refrigerant storage mechanism; 2. temporary storage mechanism; 3. automatic filling mechanism; 101. refrigerant storage box; 102. high-pressure pump; 103. output pipe; 104. input pipe; 201. temporary storage box; 202. injection hole; 203. power chamber; 204. No. 1 rotating rod; 205. rotating water wheel; 206. one-way valve; 207. large gear; 208. inflatable wind wheel; 209. small gear; 2010. No. 2 rotating rod; 2011. pressurized elbow; 301. injection pipe; 302. micro-control elbow; 303. connecting pipe; 304. infrared control valve; 305. connecting rod; 306. fixing block; 307. compression spring; 308. sealing cone; 309. semicircular sealing plug; 3010. connecting block; 3011. complete sealing piston; 3012. sealing seat. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0018] Example 1 Figure 1-Figure 6 As shown, an embodiment of the present invention provides an energy-saving refrigeration device with automatic refrigerant filling, comprising a refrigerant storage mechanism 1, a temporary storage mechanism 2 and an automatic filling mechanism 3, wherein the refrigerant storage mechanism 1 comprises a refrigerant storage box 101, one end of the refrigerant storage box 101 is fixedly connected to a high-pressure pump 102, and the output end and the input end of the high-pressure pump 102 are respectively fixedly connected to an output pipe 103 and an input pipe 104;

[0019] The temporary storage mechanism 2 includes a temporary storage box 201, a power chamber 203 is fixedly arranged at the center of the upper end of the temporary storage box 201, a No. 1 rotating rod 204 is rotatably arranged at the center of the inner wall of one side of the power chamber 203, the other end of the No. 1 rotating rod 204 passes through the power chamber 203 and leads to the outside of the power chamber 203, and a large gear 207 is fixedly arranged, and a rotating water wheel 205 is fixedly sleeved on the rod body of the No. 1 rotating rod 204 located inside the power chamber 203, a pressurized bent pipe 2011 is penetrated at the upper end of the outer wall of one side of the temporary storage box 201, and a No. 2 rotating rod 2010 is rotatably sleeved at the turning point of the pressurized bent pipe 2011, and a small gear 209 and an inflatable wind wheel 208 are respectively fixedly arranged at both ends of the No. 2 rotating rod 2010, a one-way valve 206 is fixedly arranged at the lower end of the pressurized bent pipe 2011 and near the temporary storage box 201, and an injection hole 202 is opened between the temporary storage box 201 and the power chamber 203.

[0020] The automatic filling mechanism 3 includes an injection pipe 301, a connecting pipe 303 is fixedly connected to the upper end of the rear side of the injection pipe 301, and an infrared control valve 304 is fixedly arranged on the connecting pipe 303 near the injection pipe 301. A complete sealing piston 3011 is movably sleeved at the upper end of the injection pipe 301, a micro-control elbow 302 is fixedly connected to the upper end of the complete sealing piston 3011, a connecting block 3010 is fixedly connected to the lower end of the connecting block 3010, a semicircular sealing plug 309 is fixedly arranged at the lower end of the semicircular sealing plug 309, a connecting rod 305 is fixedly connected to the lower end of the semicircular sealing plug 309, and a sealing cone 308 is fixedly connected to the lower end of the connecting rod 305. Compression springs 307 are fixedly arranged at the front and rear ends of the lower end surface of the sealing cone 308, and fixing blocks 306 are fixedly arranged at the lower ends of the two compression springs 307. A sealing seat 3012 is fixedly sleeved inside the injection pipe 301 located between the semicircular sealing plug 309 and the sealing cone 308. The rear end of the connecting pipe 303 is fixedly connected to the front end of the temporary storage box 201, and the upper end of the micro-control elbow 302 passes through the injection pipe 301 and bends to extend to the upper part of the infrared control valve 304. The connection between the injection pipe 301 and the connecting pipe 303 is on the same side as the semicircular sealing plug 309, and the fixing block 306 is fixedly connected to the inner wall of the injection pipe 301. The lower end of the injection pipe 301 is connected to the filling port of the refrigeration equipment.

[0021] The end of the output pipe 103 away from the high-pressure pump 102 passes through the power chamber 203, and its outlet faces the rotating water wheel 205. The inflatable wind wheel 208 is located inside the pressurized elbow 2011, the small gear 209 is located outside the pressurized elbow 2011, the small gear 209 is meshed and connected with the large gear 207, and the injection hole 202 and the output pipe 103 are respectively located on both sides of the rotating water wheel 205. The upper end of the temporary storage box 201 is respectively provided with a pressure sensor and a flow detector.

[0022] Specifically: The automatic filling mechanism 3 operates autonomously based on the internal pressure change of the refrigeration equipment: when the refrigerant consumption causes the pressure to decrease, the sealing cone 308 and the complete sealing piston 3011 compress the spring 307 downward under the action of the pressure difference, and release the double seal of the sealing seat 3012 and the semicircular sealing plug 309, connecting the temporary storage box 201 and the refrigeration equipment channel, and the refrigerant is automatically injected through the injection pipe 301. No electronic sensors or circuits are required throughout the process, and the opening and closing control is achieved only by relying on mechanical pressure balance and spring reset, which significantly reduces energy consumption.

[0023] When the temporary storage mechanism 2 is replenished with refrigerant through the high-pressure pump 102, the refrigerant flows through the power chamber 203 to drive the rotating water wheel 205 to drive the first rotating rod 204 and the large gear 207, and the small gear 209 and the inflatable wind wheel 208 to make the pressurized elbow 2011 suck in external air to pressurize the temporary storage box 201, forming a high-pressure reserve. A single replenishment can support multiple automatic fillings, reduce the frequent startup of the high-pressure pump 102, and reduce energy consumption.

[0024] When the high-pressure pump 102 is running, the refrigerant flow drives the rotating water wheel 205, the small gear 209 and the large gear 207, driving the inflatable wind wheel 208 to pressurize the temporary storage box 201 synchronously, and the pressure is maintained by the two-way check valve 206 of the pressurized elbow 2011. The single high-pressure pump 102 simultaneously completes the refrigerant replenishment and pressure increase, reducing additional energy consumption. The sealing cone 308, the sealing seat 3012, and the semicircular sealing plug 309 form a double mechanical seal, combined with the infrared control valve 304 to accurately control the filling time, effectively prevent refrigerant leakage, reduce environmental pollution, and meet environmental protection requirements. The automatic filling mechanism 3, the temporary storage mechanism 2 and the refrigerant storage mechanism 1 adopt a modular mechanical linkage design, without complex circuits or vulnerable electronic components, with a compact structure and low failure rate, and significantly reduced maintenance costs.

[0025] Example 2 Figure 1-Figure 6 As shown, the embodiment of the present invention provides a specific implementation of an energy-saving refrigeration device with automatic refrigerant filling: Pressure Threshold Response Test Laboratory simulation shows that when the pressure of the refrigeration equipment drops to 85% of the standard value (about 0.85 MPa), the sealing cone 308 drives the complete sealing piston 3011 downward under the action of the pressure difference, the compression stroke of the compression spring 307 reaches 5.2 mm, and the gap between the sealing seat 3012 and the semicircular sealing plug 309 is open for ≤0.3 seconds, achieving rapid replenishment of the refrigerant flow rate ≥0.8 L / min, and the pressure difference driving efficiency reaches 92% (87% reduction in energy consumption compared to traditional solenoid valves).

[0026] Transmission efficiency and pressure capacity When the refrigerant flow rate is 2.5 L / s, the rotating water wheel 205 rotates at 120 rpm, and the speed of the inflation impeller 208 is increased to 600 rpm through the gear set (the gear ratio of the large gear 207 to the small gear 209 is 5:1), and the air pressurization efficiency is 0.15 MPa / minute. A single high-pressure pump 102 can increase the pressure of the temporary storage tank 201 to 2.5 MPa in 10 minutes, meeting the requirement of ≥8 automatic fillings (each filling consumes 0.3 MPa of pressure).

[0027] Table 1 Energy consumption data index Traditional electronic control system The technology of the present invention Energy consumption per filling (kW) 0.35 0.05 Annual operating energy consumption (kWh) 12,600 1,800 High pressure pump starting frequency 8 times a day 2 times a week Leak rate test In the pressure cycle test (0.5-2.5 MPa, 100,000 cycles), the leakage rate of the double sealing structure (sealing cone 308 + sealing seat 3012) is ≤0.001 g / h, which is better than the Class AH requirement of the international standard ISO 15848-1 (allowable leakage rate ≤0.01 g / h).

[0028] Table 2 Comparison of failure rates part Traditional system failure rate (times / year) Failure rate of the present invention (times / year) Electronic Control Unit 4.2 0 (no electronic components) Sealing mechanism 1.8 0.3 Pressure drive components 2.5 0.7 Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving refrigeration device with automatic refrigerant filling, comprising a refrigerant storage mechanism (1), a temporary storage mechanism (2) and an automatic filling mechanism (3), characterized in that: The refrigerant storage mechanism (1) comprises a refrigerant storage box (101), one end of the refrigerant storage box (101) is fixedly connected to a high-pressure pump (102), and the output end and input end of the high-pressure pump (102) are respectively fixedly connected to an output pipe (103) and an input pipe (104); The temporary storage mechanism (2) comprises a temporary storage box (201), a power chamber (203) is fixedly arranged at the center of the upper end of the temporary storage box (201), a first rotating rod (204) is rotatably arranged at the center of the inner wall of one side of the power chamber (203), the other end of the first rotating rod (204) passes through the power chamber (203) and leads to the outside of the power chamber (203), and a large gear (207) is fixedly arranged thereon, and a rotating water wheel (205) is fixedly sleeved on the body of the first rotating rod (204) located inside the power chamber (203), A pressurized curved pipe (2011) is provided through the outer wall of one side of the temporary storage box (201) near the upper end, a second rotating rod (2010) is rotatably sleeved at the turning point of the pressurized curved pipe (2011), a small gear (209) and an inflatable wind wheel (208) are fixedly provided at both ends of the second rotating rod (2010), a one-way valve (206) is fixedly provided at the lower end of the pressurized curved pipe (2011) and near the temporary storage box (201), and an injection hole (202) is provided between the temporary storage box (201) and the power chamber (203).

2. The energy-saving refrigeration equipment with automatic refrigerant filling according to claim 1 is characterized in that: The automatic filling mechanism (3) comprises an injection pipe (301), a connecting pipe (303) is fixedly connected to the upper end of the rear side of the injection pipe (301), and an infrared control valve (304) is fixedly provided on the body of the connecting pipe (303) near the injection pipe (301).

3. The energy-saving refrigeration equipment with automatic refrigerant filling according to claim 2 is characterized in that: A complete sealing piston (3011) is movably sleeved at the upper end of the injection pipe (301); the upper end of the complete sealing piston (3011) is fixedly connected to a micro-control bending pipe (302); the lower end of the complete sealing piston (3011) is fixedly connected to a connecting block (3010); the lower end of the connecting block (3010) is fixedly provided with a semicircular sealing plug (309); the lower end of the semicircular sealing plug (309) is fixedly connected to a connecting rod (305); and the lower end of the connecting rod (305) is fixedly connected to a sealing cone (308).

4. The energy-saving refrigeration equipment with automatic refrigerant filling according to claim 3 is characterized in that: Compression springs (307) are fixedly provided at the front end and the rear end of the lower end surface of the sealing cone (308), and fixing blocks (306) are fixedly provided at the lower ends of the two compression springs (307). A sealing seat (3012) is fixedly provided inside the injection pipe (301) between the semicircular sealing plug (309) and the sealing cone (308).

5. The energy-saving refrigeration equipment with automatic refrigerant filling according to claim 4 is characterized in that: The rear end of the connecting pipe (303) is fixedly connected to the front end of the temporary storage box (201); the upper end of the micro-control bend pipe (302) passes through the injection pipe (301) and is bent to extend to the upper part of the infrared control valve (304); the connection point between the injection pipe (301) and the connecting pipe (303) is on the same side as the semicircular sealing plug (309); the fixing block (306) is fixedly connected to the inner wall of the injection pipe (301); and the lower end of the injection pipe (301) is connected to the filling port of the refrigeration equipment.

6. The energy-saving refrigeration equipment with automatic refrigerant filling according to claim 1 is characterized in that: One end of the output pipe (103) away from the high-pressure pump (102) passes through the power chamber (203), and its outlet faces the rotating water wheel (205).

7. The energy-saving refrigeration equipment with automatic refrigerant filling according to claim 1 is characterized in that: The inflatable wind wheel (208) is located inside the pressurized curved pipe (2011), the small gear (209) is located outside the pressurized curved pipe (2011), the small gear (209) and the large gear (207) are meshingly connected, and the injection hole (202) and the output pipe (103) are respectively located on both sides of the rotating water wheel (205).

8. The energy-saving refrigeration equipment with automatic refrigerant filling according to claim 1, characterized in that: A pressure sensor and a flow detector are respectively provided at the upper end of the temporary storage box (201).

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