Household refrigerator small-pipe-diameter condenser fan control device

Abstract

The invention belongs to the technical field of refrigerator refrigeration, and particularly relates to a household refrigerator small-pipe-diameter condenser fan control device which comprises a condensation cavity, the condensation cavity comprises a fan mechanism and a condensation mechanism, and the condensation mechanism comprises two end plates, a coil pipe, a plurality of fins and a circulating pump. The fan mechanism comprises a motor, an output shaft, fan blades and a fanning part; the circulating pump is fixedly installed at the bottom of the inner wall of the condensation cavity, a supporting plate is fixed to the upper portion of the circulating pump, the two end plates are fixedly installed at the left end and the right end of the upper portion of the supporting plate respectively, the coil pipe is inserted between the two end plates in a penetrating mode and fixed through a plurality of fins, and the two ends of the coil pipe are provided with a liquid outlet and a liquid inlet respectively. According to the device, the problems that when a current household refrigerator conducts refrigeration through a condenser, the refrigeration effect cannot be guaranteed to the maximum extent, and meanwhile the poor food storage effect caused by the too low temperature cannot be avoided are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of refrigerator refrigeration, and in particular relates to a fan control device for a small-diameter condenser of a household refrigerator. Background Art

[0002] Household refrigerators are used to store food, and a condenser is provided inside the refrigerator for refrigeration. During the use of current household refrigerators, the temperature inside the refrigerator is often too low for storing food. In particular, when storing vegetables, too low a storage temperature will cause frostbite to the vegetables, affecting their taste and nutritional value. The refrigeration effect cannot be accurately controlled, and the quality of food storage is poor. This phenomenon has become a problem that needs to be solved urgently by people in this field. Summary of the invention

[0003] The object of the present invention is to provide a small-diameter condenser fan control device for a household refrigerator to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a small-diameter condenser fan control device for a household refrigerator, comprising a condensing chamber, the condensing chamber comprising a fan mechanism and a condensing mechanism, the condensing mechanism comprising two end plates, a coil, a plurality of fins and a circulating pump, the fan mechanism comprising a motor, an output shaft, a fan blade and a fan part; the circulating pump is fixedly installed at the bottom of the inner wall of the condensing chamber, and a support plate is fixed above the circulating pump, the two end plates are respectively fixedly installed at the left and right ends above the support plate, the coil is inserted between the two end plates, and the coil is fixed by a plurality of fins, the two ends of the coil are respectively a liquid outlet and a liquid inlet, and both are connected to the circulating pump pipeline, the motor is fixedly installed on the right side of the inner wall of the condensing chamber, the output shaft is fixedly connected to the output end of the motor, the fan blade is fixedly installed at the left end of the output shaft and faces the condensing mechanism, and a plurality of heat dissipation grooves are opened on the left side of the condensing chamber.

[0005] The present invention further illustrates that the fan part includes a guide frame, a sliding frame, two elastic expansion joints, two connecting blocks, two pins and two fan plates; a fan tooth is fixedly installed on the outer side of the output shaft, and a plurality of tooth blocks are fixedly installed on the upper and lower inner sides of the sliding frame. After the fan tooth rotates, it first meshes with the upper tooth block and then meshes with the lower tooth block. The guide frame is fixedly installed on the inner wall of the condensation chamber, and the sliding frame is slidably connected to the inner wall of the guide frame. The two elastic expansion joints are respectively fixedly installed on the front and rear sides of the sliding frame, and the two connecting blocks are respectively fixedly installed on one end of the two elastic expansion joints, and conical grooves are opened inside the two connecting blocks. The two fan plates are respectively connected to the conical grooves of the connecting blocks through two pins.

[0006] The present invention further describes that a pneumatic cavity and a pressure cavity are fixed on both the front and rear sides of the inner wall of the guide frame, a pneumatic plate is slidably connected to the inner wall of the pneumatic cavity, and pneumatic rods are fixed on both the left and right sides of the sliding frame, and are fixedly connected to the pneumatic plates.

[0007] The present invention further illustrates that the front side of the air pressure chamber is connected to an external pipeline, and a one-way valve 1 is arranged in the pipeline, the front side of the air pressure chamber is connected to a pipeline between the pressure chamber, and a one-way valve 2 is arranged in the pipeline, the pressure chamber is connected to an elastic expansion joint hose, and an electrically controlled pressure valve is arranged in the hose, the elastic expansion joint is connected to an external control valve pipeline, and the air pressure plate is connected to the inner wall of the air pressure chamber by a spring.

[0008] The present invention further illustrates that a temperature sensor is fixed to the inner wall of the condensing chamber, a temperature sensing module is arranged inside the temperature sensor, a pressure regulating module is arranged inside the electric-controlled pressure valve, a time control module is arranged inside the external control valve, and the temperature sensing module is electrically connected to the pressure regulating module and the time control module respectively; the temperature sensing module is used to sense the temperature emitted by the condensing mechanism in real time, the pressure regulating module is used to control the maximum pressure bearing value of the electric-controlled pressure valve according to the temperature of the condensing mechanism, and the time control module is used to control the time between the gas entering the elastic expansion joint and the opening of the external control valve according to the temperature of the condensing mechanism after the gas enters the elastic expansion joint.

[0009] The present invention further illustrates that the pressure regulating module is regulated in such a manner that the higher the temperature of the condensing mechanism, the lower the maximum pressure bearing value of the electric-controlled pressure valve.

[0010] The present invention further illustrates that the control method of the time control module is: the higher the temperature of the condensing mechanism, the longer the time between the gas entering the elastic expansion joint and the external control valve opening.

[0011] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: when the refrigerator is refrigerating, the output shaft drives the fan blades to rotate through the operation of the motor, and the fan blades rotate at a high speed, and the cold air generated by condensation is blown out into the refrigerator through the heat dissipation slots, so as to improve the condensation effect and the temperature transfer efficiency. At the same time, the fan plate can continuously swing back and forth through the pin shaft to fan out the cold air, further speed up the dissipation speed of the cold air, and further improve the condensation effect;

[0012] And by controlling the extension of the elastic expansion joint, the fan plate is extended, and the distance between the fan plate and the coil is shortened, the wind dispersion effect is further improved. After that, the external control valve is opened, and the air pressure in the elastic expansion joint returns to normal, so that the fan plate is reset through elastic reset. On the one hand, it can greatly improve the fanning effect and increase the fanning intensity. On the other hand, it can avoid long-term close-range fanning that may cause the refrigerator temperature to be too low and damage the food stored inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the internal structure of the condensation chamber of the present invention;

[0016] Figure 3 It is a structural schematic diagram of the condensation mechanism of the present invention;

[0017] Figure 4 is a structural schematic diagram of the fan mechanism of the present invention;

[0018] Figure 5 It is a schematic diagram of the installation position of the fan teeth of the present invention;

[0019] Figure 6 It is a schematic diagram of the positional relationship between the fan plate, the pin shaft and the connecting block of the present invention;

[0020] Figure 7 It is a plane view of the swinging process of the fan plate of the present invention;

[0021] Figure 8 It is a schematic diagram of the pipe connection between the air pressure chamber, the pressure chamber and the elastic expansion joint of the present invention;

[0022] Fig. 9 It is a schematic diagram of the module connection relationship of the present invention;

[0023] In the figure: 1. condensing chamber; 11. end plate; 12. coil; 13. fin; 14. circulating pump; 141. support plate; 15. motor; 151. output shaft; 152. fan blade; 153. fan tooth; 16. guide frame; 161. slide frame; 162. elastic expansion joint; 163. connecting block; 164. pin shaft; 165. fan plate; 166. tooth block; 17. air pressure chamber; 171. air pressure plate; 172. air pressure rod; 18. pressure chamber; 19. electric control pressure valve; 2. heat sink. DETAILED DESCRIPTION

[0024] The following is a further non-limiting detailed description of the technical solution of the present invention in conjunction with the preferred embodiments and the accompanying drawings. 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.

[0025] See also Figure 1-Figure 9 The present invention provides a technical solution: a fan control device for a small-diameter condenser of a household refrigerator, comprising a condensing chamber 1, the condensing chamber 1 comprising a fan mechanism and a condensing mechanism, the condensing mechanism comprising two end plates 11, a coil 12, a plurality of fins 13 and a circulating pump 14, the fan mechanism comprising a motor 15, an output shaft 151, a fan blade 152 and a fan part;

[0026] The circulation pump 14 is fixedly installed at the bottom of the inner wall of the condensing chamber 1, and a support plate 141 is fixed above the circulation pump 14. Two end plates 11 are fixedly installed at the left and right ends of the upper side of the support plate 141, respectively. The coil 12 is inserted between the two end plates 11, and the coil 12 is fixed by a plurality of fins 13. The two ends of the coil 12 are respectively a liquid outlet and a liquid inlet, and both are connected to the circulation pump 14 pipeline. The motor 15 is fixedly installed on the right side of the inner wall of the condensing chamber 1, and the output shaft 151 is fixedly connected to the output end of the motor 15. The fan blade 152 is fixedly installed on the left end of the output shaft 151 and faces the condensing mechanism. A plurality of heat dissipation slots 2 are opened on the left side of the condensing chamber 1.

[0027] When the refrigerator is running, the condenser is running, and the circulating pump 14 is running to inject the coolant into the coil 12 through the pipeline, and then the injected coolant is circulated into the circulating pump 14 through the liquid outlet, the coolant is circulated, and the temperature of the coil 12 is transmitted to the refrigerator, thereby playing a condensation role. During the operation of the condensing mechanism, the motor 15 is running, and the fan blades 152 are driven to rotate through the output shaft 151. The fan blades 152 rotate at a high speed to blow the cold air generated by the condensation into the refrigerator through the heat dissipation groove 2 to improve the condensation effect and improve the temperature transfer efficiency.

[0028] The fan part includes a guide frame 16, a sliding frame 161, two elastic expansion joints 162, two connecting blocks 163, two pins 164 and two fan plates 165;

[0029] The outer side of the output shaft 151 is fixedly mounted with a fan tooth 153, and the inner side of the sliding frame 161 is fixed with a plurality of tooth blocks 166 on the upper and lower sides. After the fan tooth 153 rotates, it first meshes with the upper tooth block 166 and then meshes with the lower tooth block 166. The guide frame 16 is fixedly mounted on the inner wall of the condensing chamber 1, and the sliding frame 161 is slidably connected to the inner wall of the guide frame 16. Two elastic expansion joints 162 are respectively fixedly mounted on the front and rear sides of the sliding frame 161, and two connecting blocks 163 are respectively fixedly mounted on one end of the two elastic expansion joints 162. Conical grooves are provided inside the two connecting blocks 163, and two fan plates 165 are respectively connected to the conical grooves of the connecting blocks 163 through two pin shafts 164.

[0030] When the output shaft 151 rotates, the fan teeth 153 are driven to rotate. The fan teeth 153 first mesh with the upper tooth block 166, thereby driving the slide frame 161 to slide rearward along the inner wall of the guide frame 16, and then the fan teeth 153 rotate to mesh with the lower tooth block 166 and disengage from the upper tooth block 166, thereby driving the slide frame 161 to move forward. When the fan blades 152 blow cold air, the slide frame 161 moves back and forth, and drives the connecting block 163 to move back and forth through the elastic expansion joint 162. When the connecting block 163 moves back and forth, inertia is generated, so that the fan plate 165 continuously swings back and forth through the pin shaft 164, which can fan out the cold air, further speed up the dissipation of the cold air, and further improve the condensation effect.

[0031] A gas pressure chamber 17 and a pressure chamber 18 are fixed to both the front and rear sides of the inner wall of the guide frame 16. A gas pressure plate 171 is slidably connected to the inner wall of the gas pressure chamber 17. Gas pressure rods 172 are fixed to both the left and right sides of the slide frame 161 and are fixedly connected to the gas pressure plate 171.

[0032] When the sliding frame 161 moves forward and backward, the air pressure plate 171 is driven by the air pressure rod 172 to slide forward and backward along the inner wall of the air pressure chamber 17, so that the sliding frame 161 can be stabilized, the operation stability is improved, and the sliding frame 161 is prevented from being separated from the guide frame 16, thereby ensuring the stability of the fan, enhancing the guiding ability, and improving the stability.

[0033] The front side of the air pressure chamber 17 is connected to the external pipeline, and a one-way valve 1 is arranged in the pipeline. The front side of the air pressure chamber 17 is connected to the pressure chamber 18 through a pipeline, and a one-way valve 2 is arranged in the pipeline. The pressure chamber 18 is connected to the elastic expansion joint 162 hose, and an electric-controlled pressure valve 19 is arranged in the hose. The elastic expansion joint 162 is connected to the external control valve pipeline, and the air pressure plate 171 is connected to the inner wall of the air pressure chamber 17 through a spring.

[0034] When the air pressure plate 171 slides back and forth along the inner wall of the air pressure chamber 17, the spring is deformed by force, and when the fan teeth 153 are disengaged from the tooth block 166 above, the reaction force generated by the spring pushes the slide frame 161 to quickly reset, so that the fan plate 165 moves quickly, improving the fanning strength, and generating high-intensity shaking, which can relatively shake off the dust on the fan plate 165, and avoid the fan plate 165 generating load to affect the fanning effect;

[0035] When the air pressure plate 171 slides back and forth along the inner wall of the air pressure chamber 17, it continuously draws external air through the pipeline and injects it into the pressure chamber 18. After the output shaft 151 rotates several times, the gas pressure entering the pressure chamber 18 reaches the pressure limit of the electric control pressure valve 19, thereby causing the electric control pressure valve 19 to open, and the gas quickly enters the elastic expansion joint 162 through the pipeline to stretch it, thereby extending the fan plate 165 and shortening the distance between it and the coil 12, further improving the effect of dispersing wind. After that, the external control valve is opened, and the air pressure in the elastic expansion joint 162 returns to normal, thereby resetting the fan plate 165 through elastic reset. On the one hand, it can greatly improve the fanning effect and the fanning intensity, and on the other hand, it can avoid long-term close-range fanning that causes the refrigerator temperature to be too low and damage the food stored inside.

[0036] A temperature sensor is fixed to the inner wall of the condensing chamber 1, a temperature sensing module is arranged inside the temperature sensor, a pressure regulating module is arranged inside the electric control pressure valve 19, a time control module is arranged inside the external control valve, and the temperature sensing module is electrically connected to the pressure regulating module and the time control module respectively;

[0037] The temperature sensing module is used to sense the temperature emitted by the condensing mechanism in real time, the pressure regulating module is used to control the maximum pressure bearing value of the electric control pressure valve 19 according to the temperature of the condensing mechanism, and the time control module is used to control the time between the gas entering the elastic expansion joint 162 and the opening of the external control valve according to the temperature of the condensing mechanism after the gas enters the elastic expansion joint 162.

[0038] The pressure regulating module is regulated in such a way that: the higher the temperature of the condensing mechanism, the lower the maximum pressure bearing value of the electric-controlled pressure valve 19;

[0039] After the maximum pressure value of the electric-controlled pressure valve 19 changes, the amount of gas that can be stored in the pressure chamber 18 changes, thereby changing the frequency of the elastic expansion joint 162 extending and retracting. When the temperature of the condensing mechanism is high, the frequency of the elastic expansion joint 162 extending and retracting is higher, and vice versa. On the one hand, the fan intensity can be reduced to the greatest extent in a low temperature environment, thereby ensuring the storage effect of food. On the other hand, when the temperature is high, the condensation efficiency is accelerated, so that the temperature remains constant and overcooling or overheating does not occur.

[0040] The control mode of the time control module is: the higher the temperature of the condensing mechanism, the longer the time between the gas entering the elastic expansion joint 162 and the opening of the external control valve;

[0041] When the opening time of the external control valve is changed, the residence time of the elastic expansion joint 162 after being extended changes. The higher the temperature, the longer the residence time, and continuous high-intensity fanning is performed to improve the storage effect of food. Conversely, the residence time is reduced to avoid damage to the refrigerator due to excessively low temperature, thereby protecting the refrigerator.

[0042] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0043] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fan control device for a small-diameter condenser of a household refrigerator, comprising a condensing chamber (1), characterized in that: The condensation chamber (1) comprises a fan mechanism and a condensation mechanism, the condensation mechanism comprises two end plates (11), a coil (12), a plurality of fins (13) and a circulation pump (14), and the fan mechanism comprises a motor (15), an output shaft (151), fan blades (152) and a fan unit; The circulation pump (14) is fixedly mounted on the bottom of the inner wall of the condensing chamber (1), and a support plate (141) is fixed above the circulation pump (14). The two end plates (11) are respectively fixedly mounted on the left and right ends above the support plate (141). The coil (12) is inserted between the two end plates (11), and the coil (12) is fixed by a plurality of fins (13). The two ends of the coil (12) are respectively a liquid outlet and a liquid inlet, and both are connected to the circulation pump (14) pipeline. The motor (15) is fixedly mounted on the right side of the inner wall of the condensing chamber (1), and the output shaft (151) is fixedly connected to the output end of the motor (15). The fan blade (152) is fixedly mounted on the left end of the output shaft (151) and faces the condensing mechanism. A plurality of heat dissipation slots (2) are provided on the left side of the condensing chamber (1).

2. A household refrigerator small diameter condenser fan control device according to claim 1, characterized in that: The fan part comprises a guide frame (16), a sliding frame (161), two elastic expansion joints (162), two connecting blocks (163), two pin shafts (164) and two fan plates (165); The outer side of the output shaft (151) is fixedly mounted with a fan tooth (153), and the inner side of the sliding frame (161) is fixedly mounted with a plurality of tooth blocks (166) at the upper and lower sides. After the fan tooth (153) rotates, it first meshes with the upper tooth block (166) and then meshes with the lower tooth block (166). The guide frame (16) is fixedly mounted on the inner wall of the condensing chamber (1), and the sliding frame (161) is slidably connected to the inner wall of the guide frame (16). The two elastic expansion joints (162) are respectively fixedly mounted on the front and rear sides of the sliding frame (161), and the two connecting blocks (163) are respectively fixedly mounted on one end of the two elastic expansion joints (162). Conical grooves are provided inside the two connecting blocks (163), and the two fan plates (165) are respectively connected to the conical grooves of the connecting blocks (163) through two pin shafts (164).

3. A household refrigerator small diameter condenser fan control device according to claim 2, characterized in that: A pneumatic chamber (17) and a pressure chamber (18) are fixed on both the front and rear sides of the inner wall of the guide frame (16); a pneumatic plate (171) is slidably connected to the inner wall of the pneumatic chamber (17); pneumatic rods (172) are fixed on both the left and right sides of the sliding frame (161) and are fixedly connected to the pneumatic plate (171).

4. A household refrigerator small diameter condenser fan control device according to claim 3, characterized in that: The front side of the air pressure chamber (17) is connected to an external pipeline, and a one-way valve 1 is arranged in the pipeline. The front side of the air pressure chamber (17) is connected to a pipeline between a pressure chamber (18), and a one-way valve 2 is arranged in the pipeline. The pressure chamber (18) is connected to a flexible hose of an elastic expansion joint (162), and an electrically controlled pressure valve (19) is arranged in the hose. The elastic expansion joint (162) is connected to an external control valve pipeline. The air pressure plate (171) is connected to the inner wall of the air pressure chamber (17) by a spring.

5. A household refrigerator small diameter condenser fan control device according to claim 4, characterized in that: A temperature sensor is fixed on the inner wall of the condensing chamber (1), a temperature sensing module is arranged inside the temperature sensor, a pressure regulating module is arranged inside the electric-controlled pressure valve (19), a time control module is arranged inside the external control valve, and the temperature sensing module is electrically connected to the pressure regulating module and the time control module respectively; The temperature sensing module is used to sense the temperature emitted by the condensing mechanism in real time, the pressure regulating module is used to control the maximum pressure bearing value of the electric pressure valve (19) according to the temperature of the condensing mechanism, and the time control module is used to control the time between the time when the gas enters the elastic expansion joint (162) and the time when the external control valve opens according to the temperature of the condensing mechanism after the gas enters the elastic expansion joint (162).

6. A household refrigerator small diameter condenser fan control device according to claim 5, characterized in that: The pressure regulating module is regulated in such a manner that the higher the temperature of the condensing mechanism, the lower the maximum pressure bearing value of the electric-controlled pressure valve (19).

7. A household refrigerator small diameter condenser fan control device according to claim 6, characterized in that: The control method of the time control module is as follows: the higher the temperature of the condensing mechanism, the longer the time between the gas entering the elastic expansion joint (162) and the opening of the external control valve.

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