Commercial low-temperature freezer

Abstract

The invention discloses a commercial low-temperature freezer which comprises a freezer body, a freezer chamber is arranged at the bottom end of the freezer body, a freezer is arranged in the freezer chamber and comprises a condenser and a compressor, and the condenser and the compressor are connected through a condensation pipeline. A first detection assembly used for automatically starting detection is arranged at the bottom end of the condensation pipeline, and the condensation pipeline is further connected with a detection loop. According to the technical scheme, by arranging the first detection assembly, the second detection assembly and the detection loop, when condensed water is attached to the outer wall of the condensation pipeline due to invasion of warm air, the first detection assembly can collect the condensed water and send a signal to control the second detection assembly to be matched with the detection loop; the flow velocity in the condensation pipeline is detected, so that whether ice blockage occurs in the condensation pipeline or not is detected in time, the service life of the freezer is prolonged, and the working efficiency of the freezer is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and particularly to a commercial low-temperature freezer. Background Art

[0002] Commercial freezers are refrigeration equipment designed specifically for commercial scenarios and are widely used in places such as supermarkets, restaurants, and food processing plants for long-term storage of fresh food, frozen food, and other items that require low-temperature preservation. Their operating temperature is usually below 0°C, and some ultra-low temperature freezers can reach -40°C. Their core operation depends on the freezer system, which consists of four major components: a compressor, a condenser, an expansion valve, and an evaporator. Heat transfer is achieved through the vapor compression refrigeration cycle: the compressor compresses the low-temperature and low-pressure refrigerant gas into a high-temperature and high-pressure gas, which is condensed into a liquid by heat dissipation in the condenser, then depressurized through the expansion valve, and finally absorbs heat and evaporates into a gas in the evaporator, and is inhaled by the compressor again. This cycle repeats. Commercial freezers ensure stable temperature inside the box through the efficient refrigeration of the freezer, combined with a precise temperature control system and a sealed design, meeting the stringent requirements of commercial storage for a low-temperature environment. At the same time, some high-end products also have characteristics such as intelligent monitoring and energy conservation and consumption reduction to meet the modern commercial demand for efficient, environmentally friendly, and reliable equipment.

[0003] Existing commercial freezers usually have the characteristic of a large volume, so that they can store more items. However, correspondingly, commercial freezers are often equipped with large door covers, so that it is convenient to find the target item from among many stored items. This also results in a large amount of warm air entering when the freezer is opened each time, causing a large change in the temperature inside the freezer, uneven temperature distribution, and particularly having a greater impact on the condensation pipes at the condenser end: the warm air has a high temperature and a large moisture content (a lot of water vapor). After entering the commercial freezer, it will quickly cool down when it meets the cold air inside the box, and the water vapor in it will condense into condensate. If the condensate contacts the condensation pipes (especially the surface of the pipes with a lower temperature), long-term accumulation may cause condensation and dripping on the outside of the pipes, making the humidity around the pipes abnormal, accelerating the corrosion of the pipe surface (such as the oxidation of copper pipes). And after long-term use, the condensate will also corrode the connection ports of the condensation pipes, damage their sealing performance and seep into them, freeze when encountering cold, and form an ice blockage. The ice blockage will block the condensation pipes or the refrigerant circuit, resulting in the refrigerant being unable to circulate normally, the refrigeration capacity of the freezer dropping sharply, and even causing a shutdown failure.

[0004] In the prior art, the staff only conducts periodic inspections, or performs maintenance only after a large-scale ice blockage occurs in the condensation pipes, seriously affecting the work efficiency, and the operation of the freezer needs to be stopped for inspection, which has an impact on the normal operation and work efficiency of the freezer. Summary of the Invention

[0005] The main object of the present invention is to propose a commercial low-temperature freezer, aiming to solve the problems in existing commercial low-temperature freezers that the staff only conducts periodic inspections, or maintenance is carried out only after a large-scale ice blockage occurs in the condensation pipeline, seriously affecting the work efficiency, and the operation of the freezer needs to be stopped for inspection, which affects the normal operation and work efficiency of the freezer.

[0006] To solve the above problems, the present invention proposes a commercial low-temperature freezer, including a freezer body. A freezer machine room is provided at the bottom end of the freezer body. A freezer machine is provided inside the freezer machine room. The freezer machine includes a condenser and a compressor. The condenser and the compressor are connected by a condensation pipeline. A first detection component for automatically starting detection is provided at the bottom end of the condensation pipeline. The condensation pipeline is also connected to a detection circuit.

[0007] The first detection component includes a first diversion channel provided at the bottom end of the condensation pipeline. A diversion groove is provided inside the first diversion channel. A water collecting pipe is provided at the midpoint of the diversion groove. A pressure sensing component is provided at the bottom end of the water collecting pipe.

[0008] The detection circuit includes a direct current pipeline and a detection pipeline. Control components for starting or closing the detection circuit are provided on the outer walls of the direct current pipeline and the detection pipeline. A second detection component for detecting the flow velocity condition inside the condensation pipeline is provided on the inner wall of the detection pipeline.

[0009] Preferably, the cross-section of the diversion groove is set to be inclined from both ends of the first diversion channel towards the water collecting pipe.

[0010] Preferably, the control components include ball valve housings provided on the outer walls of the direct current pipeline and the detection pipeline. Ball valve bodies are rotatably installed on the inner walls of the ball valve housings. Flow through grooves are provided on the inner walls of the ball valve bodies. Flow through holes are provided on both sides of the ball valve housings. Control rods are fixedly installed at the top ends of the ball valve bodies. Control gears are fixedly installed at the top ends of the control rods. The control gears mesh with each other. An electric motor is provided at the top end of one of the control gears. The electric motor is connected to an external power supply through a wire.

[0011] The orientations of the two flow through grooves are set to be the same.

[0012] Preferably, the shapes of the flow through holes are all set to be linear. Buffer cavities are provided on one side of each flow through hole. The buffer cavities are fixedly installed on the outer walls of the direct current pipeline or the detection pipeline.

[0013] Preferably, the distance between the two ends of the buffer cavity provided on the outer wall of the direct current pipeline is greater than the distance between the two ends of the buffer cavity provided on the outer wall of the detection pipeline.

[0014] Preferably, the second detection component includes a detection device disposed on the inner wall of the detection pipeline. A pulling rope is connected to the bottom end of the detection device, and the other end of the pulling rope is connected to a floating ball. The floating ball is slidably installed inside a guiding chute, and the guiding chute is fixedly installed on the inner wall of the detection pipeline.

[0015] Preferably, through holes are formed at both the top end and the bottom end of the guiding chute.

[0016] Preferably, a limiting block is fixedly installed between the inner walls of the guiding chute.

[0017] Preferably, a limiting groove is formed on one side of the limiting block, and the pulling rope passes through the inner wall of the limiting groove.

[0018] Beneficial effects: Through the provision of the first detection component, the second detection component and the detection circuit, the technical solution of the present invention can, when condensate adheres to the outer wall of the condensation pipeline due to the intrusion of warm air, enable the first detection component to collect the condensate and send a signal to control the cooperation of the second detection component and the detection circuit to detect the flow rate inside the condensation pipeline, so as to timely detect whether an ice blockage phenomenon occurs inside the condensation pipeline, thereby improving the service life and working efficiency of the freezer. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0020] Figure 1 is the overall structural schematic diagram of the freezer of the present invention;

[0021] Figure 2 is the cross-sectional structural schematic diagram of the freezer compartment of the present invention;

[0022] Figure 3 is the cross-sectional structural schematic diagram of the detection circuit of the present invention;

[0023] Figure 4 is the present invention Figure 3 the enlarged view at A in;

[0024] Figure 5 is the cross-sectional structural schematic diagram of the first detection component of the present invention;

[0025] Figure 6 is the present invention Figure 5 the enlarged view at B in;

[0026] Figure 7It is a schematic cross-sectional structure diagram of another perspective of the first detection component of the present invention;

[0027] Figure 8 It is a schematic cross-sectional structure diagram of the extrusion component of the present invention;

[0028] Figure 9 It is the present invention Figure 8 An enlarged view of part C in;

[0029] Figure 10 It is the present invention Figure 8 An enlarged view of part D in.

[0030] The description of the reference numerals is as follows:

[0031] 1. Freezing box; 2. Freezer room; 3. Condenser; 4. Compressor; 5. Condensing pipe; 6. First diversion channel; 7. Diversion groove; 8. Water collecting pipe; 9. DC pipe; 10. Detection pipe; 11. Ball valve housing; 12. Ball valve body; 13. Flow through groove; 14. Flow through hole; 15. Control rod; 16. Control gear; 17. Motor; 18. Buffer cavity; 19. Detection device; 20. Pull rope; 21. Floating ball; 22. Guide chute; 23. Limit block; 24. Limit groove; 25. First driving gear; 26. First bevel gear; 27. Second bevel gear; 28. Synchronous rod; 29. Half tooth gear; 30. Second driving gear; 31. First driving rod; 32. Driving block; 33. Water removing block; 34. Positioning rod; 35. Positioning block; 37. Second driving rod; 38. Connecting rod; 39. Extrusion rod; 40. Connecting block; 41. Second diversion channel; 42. Water storage tank. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0033] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a certain specific posture (as shown in the accompanying drawings). If this specific posture changes, the directional indications will also change accordingly.

[0034] In the present invention, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] The present invention provides a commercial low-temperature freezer. By providing a first detection component, a second detection component, and a detection circuit, when condensate adheres to the outer wall of the condensation pipe 5 due to the intrusion of warm air, the first detection component can collect the condensate and send a signal to control the second detection component to cooperate with the detection circuit to detect the flow rate inside the condensation pipe 5, so as to timely detect whether an ice blockage occurs inside the condensation pipe 5, improving the service life and working efficiency of the freezer.

[0037] Embodiment 1

[0038] In this embodiment, the structure of the freezer is as Figure 1 and Figure 2 shown, where Figure 2 only a part of the freezer is shown, mainly showing the parts related to the present invention. A commercial low-temperature freezer of the present invention includes a freezer body 1. A freezer machine room 2 is provided at the bottom end of the freezer body 1. A freezer machine is provided inside the freezer machine room 2. The freezer machine includes a condenser 3 and a compressor 4. The condenser 3 and the compressor 4 are connected through a condensation pipe 5. A first detection component for automatically starting detection is provided at the bottom end of the condensation pipe 5. The condensation pipe 5 is also connected to a detection circuit, as Figure 2 , Figure 3 and Figure 5As shown, the first detection component includes a first diversion channel 6 provided at the bottom end of the condensation pipe 5. A diversion groove 7 is formed inside the first diversion channel 6. A water collecting pipe 8 is provided at the midpoint of the diversion groove 7. A pressure sensing component (not shown in the figure, composed of a pressure plate and a first pressure sensor) is provided at the bottom end of the water collecting pipe 8. When the staff opens the freezer, since the freezer door is large in volume, a large amount of warm air is easily brought in, resulting in the production of condensed water on the outer wall of the condensation pipe 5. After a certain amount of condensed water is generated, it falls into the first diversion channel 6 under the action of gravity. Among them, as Figure 7 shown, the cross-section of the diversion groove 7 is designed to be inclined from both ends of the first diversion channel 6 towards the water collecting pipe 8. Such a design can guide the condensed water to flow towards the water collecting pipe 8, improving the collection efficiency of the first detection component for the condensed water, thereby improving the timeliness of detecting the ice blockage phenomenon in the condensation pipe 5. The condensed water flows into the pressure sensing component through the diversion groove 7 and the water collecting pipe 8. When the first pressure sensor detects a certain pressure, it sends a signal to control the operation of the detection circuit;

[0039] The detection circuit includes a DC pipeline 9 and a detection pipeline 10. Control components for starting or closing the detection circuit are provided on the outer walls of the DC pipeline 9 and the detection pipeline 10. A second detection component for detecting the flow rate condition in the condensation pipeline 5 is provided on the inner wall of the detection pipeline 10. The control components include ball valve housings 11 provided on the outer walls of the DC pipeline 9 and the detection pipeline 10. Ball valve bodies 12 are rotatably installed on the inner walls of the ball valve housings 11. Flow channels 13 are provided in the inner walls of the ball valve bodies 12. Flow holes 14 are provided on both sides of the ball valve housings 11. Control rods 15 are fixedly installed at the tops of the ball valve bodies 12. Control gears 16 are fixedly installed at the tops of the control rods 15. The control gears 16 mesh with each other. A motor 17 is provided at the top of one of the control gears 16. The motor 17 is connected to an external power supply through a wire (in this embodiment, the model of the motor 17 is selected as LW100, and since the motor 17 is a mature existing technology, its internal structure and working principle will not be described in detail). The orientations of two of the flow channels 13 are the same. When the freezer is operating normally, the direction of the flow channel 13 on the inner wall of the DC pipeline 9 is the same as the water flow direction in the DC pipeline 9, and the direction of the flow channel 13 on the inner wall of the detection pipeline 10 is perpendicular to the water flow direction in the detection pipeline 10. At this time, the detection circuit is closed. When the first detection component collects a certain amount of condensed water, the first detection component sends a signal to control the motor 17 to start, so that the motor 17 drives the control gear 16 to rotate 90 degrees. At this time, the direction of the flow channel 13 on the inner wall of the DC pipeline 9 is perpendicular to the water flow direction in the DC pipeline 9, and the direction of the flow channel 13 on the inner wall of the detection pipeline 10 is the same as the water flow direction in the detection pipeline 10, so that the water flow in the condensation pipeline 5 flows through the detection pipeline 10 into the compressor 4, and thus whether ice blockage occurs in the condensation pipeline 5 is detected by the second detection component provided in the detection pipeline 10. With this design, compared with directly providing the second detection component in the condensation pipeline 5, when the freezer is operating normally, it can avoid the problem that the second detection component obstructs the water flow in the condensation pipeline 5, thereby affecting the working efficiency of the freezer. And when it is necessary to detect the condensation pipeline 5, by switching the water flow channel from the DC pipeline 9 to the detection pipeline 10, the detection can be carried out without shutting down, improving the working efficiency of the freezer. It is worth mentioning that the shapes of the flow holes 14 are all set as straight slots. The purpose is to make the distance between both sides of the flow hole 14 greater than the distance between both sides of the flow channel 13. If the distance between both sides of the flow hole 14 is not greater than the distance between both sides of the flow channel 13, when the ball valve body 12 rotates to open or close, it will cause the condensation pipeline 5 and the detection circuit to be in a closed state for a period of time at the same time, thereby affecting the working efficiency of the freezer. And with this design, when the flow channel 13 changes from a position parallel to the water flow direction in the DC pipeline 9 or the detection pipeline 10, it can also make the water flow through the flow channel 13 for a period of time, so that before the other ball valve body 12 rotates to a position where the water flow can pass through,The ball valve body 12 that is closed can still maintain the fluidity of the condensation pipeline 5, thereby reducing the impact on the chiller when the detection circuit is opened and improving the working efficiency of the chiller. Buffer cavities 18 are provided on one side of the through holes 14, and the buffer cavities 18 are fixedly installed on the outer walls of the DC pipeline 9 or the detection pipeline 10. One end cross-sectional shape of the buffer cavity 18 matches the cross-sectional shape of the condensation pipeline 5, and the other end cross-sectional shape of the buffer cavity 18 matches the cross-sectional shape of the through hole 14. When the ball valve body 12 rotates, the buffer cavity 18 can adapt to the shape of the water flow channel, assist in maintaining the short-term flow of water, make the closing process smoother, avoid the problem of the impact on the operation of the chiller caused by the instantaneous truncation of the water flow, ensure the stability of the system when the detection circuit is opened, and improve the working efficiency of the chiller. Further, the distance between the two ends of the buffer cavity 18 provided on the outer wall of the DC pipeline 9 is greater than the distance between the two ends of the buffer cavity 18 provided on the outer wall of the detection pipeline 10. With this design, due to the buffering of the water flow at one end of the buffer cavity 18 on the outer wall of the detection pipeline 10 through the turning part, the water flow velocity is relatively slow, so that the shorter length of the buffer cavity 18 can reduce the influence of the buffer cavity 18 on the water flow velocity during the normal passage of the water flow, while the water flow velocity inside the buffer cavity 18 on the outer wall of the DC pipeline 9 is relatively fast, and the longer buffer cavity 18 can improve the buffering effect of the buffer cavity 18;

[0040] Further, in this embodiment, as Figure 4 and Figure 6As shown, the second detection component includes a detection device 19 disposed on the inner wall of the detection pipeline 10. A second pressure sensor (not shown in the figure, and since both the second pressure sensor and the above-mentioned first pressure sensor are mature prior arts, their internal structures and working principles will not be elaborated) is provided inside the detection device 19. A pull rope 20 is connected to the bottom end of the detection device 19, and the other end of the pull rope 20 is connected to a floating ball 21. The floating ball 21 is slidably installed inside a guiding chute 22, and the guiding chute 22 is fixedly installed on the inner wall of the detection pipeline 10. When the detection circuit is switched to the detection state, the water flow drives the floating ball 21 to slide along the guiding chute 22. At this time, the floating ball 21 applies a pulling force to the detection device 19 through the pull rope 20. After the detection pipeline 10 is opened for a period of time, when the second pressure sensor detects that the pulling force exceeds a preset threshold, it indicates that the flow rate in the condensation pipeline 5 is normal and there is no ice blockage phenomenon. If, after the detection pipeline 10 is opened for a period of time, the second pressure sensor does not detect that the pulling force exceeds the preset threshold, it indicates that the flow rate in the condensation pipeline 5 is slow and there may be an ice blockage phenomenon. At this time, the detection device 19 will send a signal to remind the staff to stop the machine for maintenance. Both the top end and the bottom end of the guiding chute 22 are provided with through holes. Such a design can make the fluid enter the guiding chute 22 more smoothly, reduce the fluid disturbance or retention caused by the wall surface of the guiding chute 22, reduce the obstruction of the second detection component to the water flow, and the through holes can also disperse the fluid pressure between the detection pipeline 10 and the guiding chute 22, preventing the floating ball 21 from jamming or abnormally shifting due to local high pressure, and improving the reliability of the detection result. Further, a limiting block 23 is fixedly installed between the inner walls of the guiding chute 22 to limit the floating ball 21 through the limiting block 23 to prevent the floating ball 21 from moving out of the guiding chute 22 and affecting the subsequent detection operation. A limiting groove 24 is provided on one side of the limiting block 23, and the pull rope 20 passes through the inner wall of the limiting groove 24. Such a design can provide a limiting and guiding effect on the pull rope 20 through the limiting groove 24, thereby guiding the movement trajectory of the floating ball 21, reducing the friction force caused by the biasing pressure between the floating ball 21 and the inner wall of the guiding chute 22, and further improving the accuracy of the detection result.

[0041] In summary, in this embodiment, by providing the first detection component, the second detection component and the detection circuit, when condensate adheres to the outer wall of the condensation pipe 5 due to the intrusion of warm air, the first detection component can collect the condensate and send a signal to control the second detection component to cooperate with the detection circuit to detect the flow rate in the condensation pipe 5. In the prior art, the staff only performs periodic inspections, or maintenance is carried out only after a large-scale ice blockage in the condensation pipe 5 seriously affects the work efficiency. The ice blockage will also damage important components such as the compressor 4. Moreover, even when the staff timely discovers abnormal phenomena such as the generation of condensate, whether there is an ice blockage in the condensation pipe 5 or not, the operation of the freezer needs to be stopped for inspection, which affects the normal operation and work efficiency of the freezer. However, by using the first detection component, the second detection component and the detection circuit in this embodiment, it is possible to timely detect the generation of condensate on the outer wall of the condensation pipe 5, thereby judging that an ice blockage may occur in the condensation pipe 5, and at the same time, it is possible to detect whether there is an ice blockage in the condensation pipe 5 without shutting down the machine, improving the service life and work efficiency of the freezer.

[0042] Embodiment 2

[0043] For further explanation on the basis of Embodiment 1, in this embodiment, as Figure 2 , Figure 8 and Figure 9As shown, a driving component and a water removing component are arranged on one side of a control gear 16. The driving component includes a first driving gear 25 arranged on one side of the control gear 16. A first bevel gear 26 is fixedly installed at the bottom end of the first driving gear 25. A second bevel gear 27 is meshed and installed on one side of the first bevel gear 26. A synchronizing rod 28 is fixedly installed on one side of the second bevel gear 27. The other end of the synchronizing rod 28 is fixedly installed with a semi-toothed gear 29. A second driving gear 30 is meshed and installed on one side of the semi-toothed gear 29. A water removing component is arranged on one side of the second driving gear 30. The water removing component includes a first driving rod 31 arranged on one side of the second driving gear 30. Driving blocks 32 are symmetrically installed on one side of the first driving rod 31. Water removing blocks 33 are fixedly installed on one side of each driving block 32. A water absorbent cotton is arranged on the concave surface of the water removing block 33. The water absorbent cotton is connected to the concave surface of the water removing block 33 through a magic tape, which is convenient for disassembly and cleaning. With such a design, when the control component controls the detection circuit to be turned on, the control gear 16 can drive the first driving gear 25 to rotate, so that the first driving gear 25 drives the water removing block 33 to rotate to the top of the condensation pipeline 5 through the first bevel gear 26, the second bevel gear 27, the synchronizing rod 28, the semi-toothed gear 29, the second driving gear 30, the first driving rod 31 and the driving blocks 32, so that the water absorbent cotton arranged on the concave surface of the water removing block 33 covers the top of the condensation pipeline 5, absorbs the condensed water generated at the top of the condensation pipeline 5, and avoids the problem that the condensed water generated at the top of the condensation pipeline 5 is likely to stay at the top of the condensation pipeline 5, corrode the condensation pipeline 5, and shorten the service life of the condensation pipeline 5.

[0044] Further, in this embodiment, positioning rods 34 are fixedly installed on the inner sides of the driving blocks 32. Positioning blocks 35 are abutted against one side of each positioning rod 34. The positioning blocks 35 are fixedly installed at the bottom end of the inner wall of the freezer compartment 2. An elastic clamping groove is arranged at one end of the positioning block 35 close to the positioning rod 34. The clamping groove is made of a high-elastic engineering plastic, which has both good flexibility and high strength. With such a design, when the water removing block 33 moves to a position perpendicular to the bottom end of the freezer compartment 2, the positioning rod 34 will accurately embed into the elastic clamping groove, and the fastening force generated by the elastic deformation of the clamping groove is used to firmly fix the water removing component.

[0045] Embodiment Three

[0046] Further, on the basis of Embodiment Two, it is further supplemented and explained that in this embodiment, as Figure 8 、 Figure 9 and Figure 10As shown in the figure, an extrusion assembly is further provided on one side of the semi-toothed gear 29. The extrusion assembly includes a second driving rod 37 disposed on one side of the semi-toothed gear 29. Connecting rods 38 are fixedly installed at both ends of the second driving rod 37. Extrusion rods 39 are fixedly installed between the ends of the connecting rods 38 away from the second driving rod 37. By allowing the extrusion rods 39 to abut against and extrude the absorbent cotton provided on the concave surface of the water removal block 33, the residual moisture in the absorbent cotton can be squeezed out, improving the next use effect of the absorbent cotton.

[0047] In addition, it should be explained that in this embodiment, in combination with the above-mentioned Embodiment 2, half of the outer wall of the semi-toothed gear 29 is set as a smooth straight part, and the other half of the outer wall of the semi-toothed gear 29 is set as a toothed block part. And the toothed block part of the semi-toothed gear 29 is usually set not to mesh with the second driving gear 30. Such a design can make the control assembly drive the detection circuit to open. First, the semi-toothed gear 29 drives the extrusion rod 39 to leave one side of the water removal block 33, and then meshes with the second driving gear 30 and drives the second driving gear 30 to rotate, so that the second driving gear 30 drives the water removal block 33 to rotate to the top of the condensation pipeline 5, thus avoiding when the semi-toothed gear 29 drives the extrusion rod 39 and the water removal block 33 to rotate simultaneously through the second driving gear 30, it is easy for the extrusion rod 39 and the water removal block 33 to abut against each other and cause problems of motion interference, improving the stability and reliability of the device. Further, the number of tooth blocks on the outer wall of the first driving gear 25 is set to be half of the number of tooth blocks on the outer wall of the control gear 16, so that when the control gear 16 rotates 90 degrees, it can drive the first driving gear 25 to rotate 180 degrees, ensuring that the first driving gear 25 can drive the semi-toothed gear 29 to rotate 180 degrees through the first bevel gear 26, the second bevel gear 27 and the synchronizing rod 28, so that the semi-toothed gear 29 can drive the extrusion rod 39 to move away from the water removal block 33 first, and then drive the water removal block 33 to move, and can drive the extrusion rod 39 and the water removal block 33 to reset simultaneously during reset. After the water removal block 33 is reset and positioned by the positioning rod 34 and the positioning block 35, the semi-toothed gear 29 stops meshing with the second driving gear 30. At this time, the semi-toothed gear 29 continues to rotate, driving the extrusion rod 39 to move to the inside of the water removal block 33 and squeeze the absorbent cotton.

[0048] Further, in this embodiment, connecting blocks 40 are fixedly installed on one side of the extrusion rods 39. Second diversion channels 41 are fixedly installed at the bottom ends of the connecting blocks 40. A water storage tank 42 is provided at the bottom end of the second diversion channel 41. The water storage tank 42 is fixedly installed at the bottom end of the inner wall of the freezer room 2. A through groove is provided at the bottom end of the second diversion channel 41, which can allow the liquid to fall into the water storage tank 42 through the second diversion channel 41. Such a design can make the water squeezed out when the extrusion rod 39 abuts against and squeezes the absorbent cotton on the concave surface of the water removal block 33 fall into the second diversion channel 41 and fall into the water storage tank 42 along the second diversion channel 41 for collection, avoiding the problem that the condensed water falls into the freezer room 2 and corrodes and damages the parts.

[0049] Working principle: When the staff opens the commercial low-temperature freezer, the large cabinet door causes a large amount of warm air to enter, which easily causes condensed water to form on the surface of the condensation pipe 5, especially the condensation pipe 5 near the condenser 3. When the condensed water on the surface of the condensation pipe 5 accumulates to a certain amount, the condensed water will fall into the first diversion channel 6 under the action of gravity, and then flow along the diversion groove 7 to the water collecting pipe 8 and converge in the pressure sensing component. When the first pressure sensor detects a certain pressure, it sends a signal to control the start of the motor 17, so that the motor 17 drives the control gear 16 to rotate 90 degrees. The control gear 16 drives the control rod 15 to rotate, the control rod 15 drives the ball valve body 12 to rotate, and the ball valve body 12 drives the flow-through groove 13 to rotate, so that the flow-through groove 13 in the detection pipe 10 rotates to the same direction as the water flow direction in the detection pipe 10, thereby opening the detection circuit. At the same time, the control gear 16 drives another control gear 16 to rotate 90 degrees, so that the other control gear 16 drives the flow-through groove 13 in the DC pipe 9 to rotate perpendicular to the flowing water direction in the DC pipe 9 through the control rod 15 and the ball valve body 12, thereby closing the normal water flow channel. At this time, the water in the condensation pipe 5 flows through the detection pipe 10 into the compressor 4, so that the water flow drives the floating ball 21 to slide along the guiding chute 22. At this time, the floating ball 21 applies a pulling force to the detection device 19 through the pull rope 20. After the detection pipe 10 is opened for a period of time, when the second pressure sensor detects that the pulling force exceeds the preset threshold, it indicates that the flow rate in the condensation pipe 5 is normal and there is no ice blockage phenomenon. If the second pressure sensor does not detect that the pulling force exceeds the preset threshold after the detection pipe 10 is opened for a period of time, it indicates that the flow rate in the condensation pipe 5 is slow and there may be an ice blockage phenomenon. At this time, the detection device 19 will send a signal to remind the staff to stop the machine for maintenance;

[0050] When the detection circuit is turned on, the control gear 16 also drives the first driving gear 25 to rotate, so that the first driving gear 25 drives the first bevel gear 26 to rotate, the first bevel gear 26 drives the second bevel gear 27 to rotate, the second bevel gear 27 drives the synchronizing rod 28 to rotate, the synchronizing rod 28 drives the half-tooth gear 29 to rotate, the half-tooth gear 29 drives the second driving rod 37 to rotate, the second driving rod 37 drives the connecting rod 38 to rotate, so that the connecting rod 38 drives the extrusion rod 39 to move away from one side of the water removal block 33. When the half-tooth gear 29 rotates 90 degrees, the half-tooth gear 29 meshes with the second driving gear 30 and drives the second driving gear 30 to rotate. The second driving gear 30 drives the first driving rod 31 to rotate, and the rotation of the first driving rod 31 drives the driving block 32 to rotate, so that the driving block 32 drives the water removal block 33 to rotate to the top of the condensation pipe 5, so that the absorbent cotton arranged inside it covers the top of the condensation pipe 5, absorbs the condensed water generated at the top of the condensation pipe 5, and avoids the problem that the condensed water generated at the top of the condensation pipe 5 is likely to stay at the top of the condensation pipe 5, corrode the condensation pipe 5, and shorten the service life of the condensation pipe 5.

[0051] After the second detection component completes the detection of the ice blockage phenomenon in the condensation pipe 5, the motor 17 rotates reversely 90 degrees to drive each component to reset. At this time, the half-tooth gear 29 drives the water removal block 33 and the extrusion rod 39 to reset at the same time. When the half-tooth gear 29 rotates 90 degrees, the water removal block 33 completes the reset. At this time, the half-tooth gear 29 continues to rotate 90 degrees to drive the extrusion rod 39 to move to one side of the water removal block 33 and squeeze the absorbent cotton arranged inside the water removal block 33, squeezing out the water inside it, so that the water flows into the water storage tank 42 through the second diversion channel 41, avoiding the condensed water falling into the freezer room 2 and corroding and damaging the parts.

[0052] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A commercial low-temperature freezer, comprising a freezer body (1), a freezer compartment (2) is provided at the bottom end of the freezer body (1), a freezer is provided inside the freezer compartment (2), the freezer includes a condenser (3) and a compressor (4), the condenser (3) and the compressor (4) are connected by a condensation pipeline (5), characterized in that, A first detection component for automatically starting detection is provided at the bottom end of the condensation pipeline (5), and the condensation pipeline (5) is also connected to a detection circuit; The first detection component includes a first diversion channel (6) provided at the bottom end of the condensation pipeline (5). A diversion groove (7) is formed inside the first diversion channel (6). A water collecting pipe (8) is provided at the midpoint of the diversion groove (7). A pressure sensing component is provided at the bottom end of the water collecting pipe (8); The detection circuit includes a direct current pipeline (9) and a detection pipeline (10). Control components for starting or closing the detection circuit are provided on the outer walls of the direct current pipeline (9) and the detection pipeline (10). A second detection component for detecting the flow velocity condition inside the condensation pipeline (5) is provided on the inner wall of the detection pipeline (10).

2. A commercial low-temperature freezer according to claim 1, characterized in that, The cross-section of the diversion groove (7) is set to be inclined from both ends of the first diversion channel (6) towards the water collecting pipe (8).

3. A commercial low-temperature freezer according to claim 1, characterized in that, The control component includes a ball valve housing (11) provided on the outer walls of the direct current pipeline (9) and the detection pipeline (10). A ball valve body (12) is rotatably installed on the inner walls of the ball valve housing (11). A flow through groove (13) is formed on the inner walls of the ball valve body (12). Flow through holes (14) are formed on both sides of the ball valve housing (11). A control rod (15) is fixedly installed at the top end of the ball valve body (12). A control gear (16) is fixedly installed at the top end of the control rod (15). The control gears (16) are meshed with each other. A motor (17) is provided at the top end of one of the control gears (16). The motor (17) is connected to an external power supply through a wire; The orientations of the two flow through grooves (13) are set to be the same.

4. A commercial low-temperature freezer according to claim 3, characterized in that, The shapes of the flow through holes (14) are all set to be in a shape of a straight line. A buffer cavity (18) is provided on one side of each of the flow through holes (14). The buffer cavities (18) are fixedly installed on the outer walls of the direct current pipeline (9) or the detection pipeline (10).

5. The commercial low-temperature freezer according to claim 4, wherein, The distance between the two ends of the buffer cavity (18) provided on the outer wall of the direct current pipeline (9) is greater than the distance between the two ends of the buffer cavity (18) provided on the outer wall of the detection pipeline (10).

6. A commercial low-temperature freezer according to claim 1, characterized in that, The second detection component includes a detection device (19) provided on the inner wall of the detection pipeline (10). A pull rope (20) is connected to the bottom end of the detection device (19). The other end of the pull rope (20) is connected to a floating ball (21). The floating ball (21) is slidably installed inside a guiding sliding groove (22). The guiding sliding groove (22) is fixedly installed on the inner wall of the detection pipeline (10).

7. A commercial low-temperature freezer according to claim 6, characterized in that, Hole grooves are formed at both the top end and the bottom end of the guiding sliding groove (22).

8. A commercial low-temperature freezer according to claim 6, characterized in that, A limiting block (23) is fixedly installed between the inner walls of the guiding sliding groove (22).

9. The commercial low-temperature freezer according to claim 8, characterized in that, A limiting groove (24) is formed on one side of the limiting block (23). The pull rope (20) passes through the inner wall of the limiting groove (24).

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