Laboratory medical refrigerator-freezer
By introducing a miniature vortex drain pump and a self-regulating PTC heating wire into the refrigeration and freezing box, combined with a photoelectric water level sensor and a bypass backup pipe, the problems of poor condensate drainage and ice blockage are solved, achieving a stable and efficient drainage effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI GENETRON MEDICAL LABORATORY CO LTD
- Filing Date
- 2025-09-18
- Publication Date
- 2026-07-31
AI Technical Summary
The drain pipes of existing refrigerated and frozen containers are prone to clogging, resulting in poor drainage, which affects equipment use and ambient humidity, and poses a risk of equipment damage.
The drainage mechanism, consisting of a miniature vortex drainage pump and a self-limiting PTC heating wire, combined with a photoelectric water level sensor and a bypass backup pipe, achieves positive pressure drainage and ice blockage melting, ensuring smooth drainage.
It effectively overcomes pipeline resistance, prevents drainage failure, avoids ice blockage, and improves equipment reliability and operational stability.
Smart Images
Figure CN224580529U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of refrigeration and freezing box technology, and in particular to a laboratory medical refrigeration and freezing box. Background Technology
[0002] The field of medical equipment is a technology related to human life, so society has put forward higher requirements for medical equipment. Medical refrigerators are an important piece of equipment in the medical field. In the current medical field, medical refrigerators are professional refrigerators used to preserve tissue samples such as medicines, samples, vaccines, enzymes, hormones, stem cells, and platelets. When preserving biological tissue samples, laboratories need to store various related items in refrigerators with relatively stable temperatures in order to ensure the activity of the samples.
[0003] Condensation often condenses on the back of the refrigerator compartment of a freezer. Currently, most solutions for condensation in the refrigerator compartment are to install drain holes and drain pipes at the bottom of the back, allowing the condensation to drain through the drain holes and drain pipes to the water collection tray of the refrigeration unit, and then evaporate it using the waste heat of the compressor.
[0004] The existing exhaust structure of refrigerated and frozen containers has the following drawbacks in practical use:
[0005] Existing drain pipes rely solely on gravity for drainage. If the drain pipes are long or have complex routes, drainage can easily become obstructed. Furthermore, drain pipes near the freezer compartment are prone to freezing and blockage. Poor drainage of condensate can lead to equipment damage or a humid environment, thus affecting the use of the refrigerator / freezer. Utility Model Content
[0006] In view of the technical problems in the existing technology, the existing drain pipe relies solely on gravity for drainage. If the drain pipe is long or the path is complex, it is easy to cause poor drainage. In addition, the drain pipe near the freezer compartment is prone to freezing and blockage. Poor drainage of condensate may lead to equipment damage or a humid environment, thus affecting the use of the refrigeration and freezer. Therefore, this utility model provides a laboratory medical refrigeration and freezer.
[0007] The technical solution adopted by this utility model is as follows: a laboratory medical refrigerator / freezer, including a cabinet and a refrigeration mechanism. Two storage chambers are provided on the front side of the cabinet, and a back cavity is provided inside the rear side of the cabinet. A drainage mechanism is provided between the storage chambers and the back cavity. The drainage mechanism includes a first water supply pipe, a micro vortex drainage pump, and a second water supply pipe. A V-shaped water collection trough is provided on one side of the inner wall of the storage chamber. The first water supply pipe is located between the V-shaped water collection trough and the back cavity. The micro vortex drainage pump is fixedly installed on one side of the inner wall of the back cavity. The input end of the micro vortex drainage pump is fixedly connected to one end of the first water supply pipe. A fixing bracket is fixedly installed on one side of the inner wall of the back cavity. The second water supply pipe is fixedly installed between the fixing brackets. The upper end of the second water supply pipe is fixedly connected to the output end of the micro vortex drainage pump. A self-limiting temperature PTC heating wire is provided around the second water supply pipe.
[0008] Furthermore, a photoelectric water level sensor is installed on one side of the inner wall of the storage chamber. The photoelectric water level sensor is located on the upper side of the V-shaped water collection tank and corresponds to the middle of the V-shaped water collection tank. A control module is installed on the upper side of the tank.
[0009] Furthermore, a bypass backup pipe is provided on one side of the first water supply pipe and the second water supply pipe, and a one-way duckbill valve is provided between the input end of the bypass backup pipe and the first water supply pipe.
[0010] Furthermore, the refrigeration mechanism is disposed within the back cavity and corresponds to the two storage chambers, with the lower end of the second water supply pipe corresponding to the refrigeration mechanism.
[0011] Furthermore, several support strips are fixedly installed on both sides of the inner wall of the storage room, and a partition is provided on the upper side of two corresponding support strips.
[0012] Furthermore, a base plate is fixedly installed on the lower side of the box, and four casters are provided on the lower side of the base plate. Fixing mechanisms are provided on both sides of the base plate, and the fixing mechanisms include a fixed shell, a threaded rod, a lifting rod, and a rubber plate.
[0013] Furthermore, the fixed shell is fixedly installed on one side of the base plate, and a mounting groove is provided on the lower side of the fixed shell. The threaded rod is rotatably installed in the mounting groove, and the lifting rod is slidably installed in the mounting groove. The lifting rod is threadedly connected to the threaded rod. The rubber plate is fixedly installed at the lower end of the lifting rod, and a rotating knob is fixedly installed at the upper end of the threaded rod. The rotating knob is located on the upper side of the fixed shell.
[0014] The beneficial effects of this utility model are:
[0015] 1. This utility model, through its drainage mechanism, can generate positive pressure discharge when discharging condensate, forcefully transporting the condensate through the first and second water supply pipes to the upper side of the compressor's water receiving pan, and can melt any ice blockage that may occur in the pipes, thereby effectively overcoming pipe resistance and avoiding drainage failure due to long pipes or ice blockage in the drain pipe.
[0016] 2. Furthermore, this utility model, through a one-way duckbill valve and a bypass backup pipe, allows condensate to flow out naturally by gravity through the first water supply pipe, the bypass backup pipe, and the second water supply pipe when the micro vortex drainage pump fails to start, thereby improving the reliability of the drainage mechanism during use. Attached Figure Description
[0017] Figure 1 This is a three-dimensional view of the entire utility model;
[0018] Figure 2 This is a structural diagram of the storage chamber of this utility model;
[0019] Figure 3 This is a diagram of the internal structure of the back cavity of this utility model;
[0020] Figure 4 This is a perspective view of the drainage mechanism of this utility model;
[0021] Figure 5 This is a cross-sectional view of the fixing mechanism of this utility model.
[0022] The following components are marked in the diagram: 1. Housing; 2. Control module; 3. Base plate; 4. Casters; 5. Fixing mechanism; 6. Storage compartment; 7. Placement partition; 8. V-shaped water collection tank; 9. Photoelectric water level sensor; 10. Back cavity; 11. Drainage mechanism; 12. Cooling mechanism; 13. First water supply pipe; 14. Miniature vortex drainage pump; 15. Second water supply pipe; 16. Fixing bracket; 17. Bypass spare pipe; 18. Self-limiting PTC heating wire; 19. Fixing shell; 20. Mounting slot; 21. Threaded rod; 22. Lifting rod; 23. Rubber plate; 24. Rotating knob. Detailed Implementation
[0023] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] The following is in conjunction with the appendix Figures 1-5 The present invention will be further described below.
[0026] In order to solve the problems existing in the background art, this application proposes the following technical solution: a laboratory medical refrigerator / freezer.
[0027] The specific technical solution includes a housing 1 and a refrigeration mechanism 12. Two storage chambers 6 are provided on the front side of the housing 1, and a back cavity 10 is provided inside the rear side of the housing 1. A drainage mechanism 11 is provided between the storage chambers 6 and the back cavity 10. The drainage mechanism 11 includes a first water supply pipe 13, a micro vortex drainage pump 14, and a second water supply pipe 15. A V-shaped water collection trough 8 is provided on one side of the inner wall of the storage chamber 6. The first water supply pipe 13 is located between the V-shaped water collection trough 8 and the back cavity 10. A drain outlet is provided on the lower side of the inner wall in the middle of the V-shaped water collection trough 8, and the drain outlet is aligned with one end of the first water supply pipe 13. The drain outlet is equipped with a filter screen to intercept impurities. A miniature vortex drain pump 14 is fixedly installed on one side of the inner wall of the back cavity 10. The input end of the miniature vortex drain pump 14 is fixedly connected to one end of the first water supply pipe 13. A fixing bracket 16 is fixedly installed on one side of the inner wall of the back cavity 10. A second water supply pipe 15 is fixedly installed between the fixing brackets 16. The upper end of the second water supply pipe 15 is fixedly connected to the output end of the miniature vortex drain pump 14. A self-limiting temperature PTC heating wire 18 is provided around the second water supply pipe 15. A photoelectric water level sensor is provided on one side of the inner wall of the storage chamber 6. Device 9, through non-contact detection by photoelectric water level sensor 9, can avoid the influence of dirt on detection accuracy. The photoelectric water level sensor 9 is wrapped with a waterproof shell. The photoelectric water level sensor 9 is located on the upper side of V-shaped water collection tank 8, and the photoelectric water level sensor 9 corresponds to the middle of V-shaped water collection tank 8. The control module 2 is set on the upper side of the cabinet 1. The control module 2 is used to control the entire refrigerator-freezer. The refrigeration mechanism 12 is set in the back cavity 10, and the refrigeration mechanism 12 corresponds to the two storage compartments 6. The lower end of the second water supply pipe 15 corresponds to the refrigeration mechanism 12. The storage compartments 6 are a freezer compartment and a refrigerator compartment, with the upper storage compartment 6 being the refrigerator compartment and the lower storage compartment 6 being the freezer compartment. The miniature vortex drain pump 14, the photoelectric water level sensor 9, and the self-limiting PTC heating wire 18 are all electrically connected to the control module 2. The control module 2 is externally connected to a display screen, which allows users to easily view the overall operation status of the refrigerator and freezer, as well as alarms in case of problems. The refrigeration mechanism 12 consists of a compressor, evaporator, expansion valve, capillary tube, and condenser. A water collection tray is provided on the compressor, which is existing technology and will not be described in detail here.
[0028] Reference Figure 4 As shown, a bypass backup pipe 17 is provided on one side of the first water supply pipe 13 and the second water supply pipe 15. A one-way duckbill valve is provided between the input end of the bypass backup pipe 17 and the first water supply pipe 13. Through the one-way duckbill valve and the bypass backup pipe 17, when the micro vortex drainage pump 14 fails to start, the water level in the V-shaped water collection tank 8 gradually rises, generating static water pressure. When the pressure exceeds the opening pressure of the one-way duckbill valve (such as 1-2 cm water column), the valve is opened, and the condensate can flow out naturally by gravity through the first water supply pipe 13, the bypass backup pipe 17 and the second water supply pipe 15.
[0029] Reference Figure 1 and Figure 2 As shown, several support strips are fixedly installed on both sides of the inner wall of the storage room 6. A partition 7 is installed on the upper side of two corresponding support strips. The partition 7 is used for classifying and placing items. A base plate 3 is fixedly installed on the lower side of the box body 1. Four casters 4 are installed on the lower side of the base plate 3. The casters 4 are omnidirectional casters in the prior art. Fixing mechanisms 5 are installed on both sides of the base plate 3. The fixing mechanism 5 includes a fixing shell 19, a threaded rod 21, a lifting rod 22, and a rubber plate 23. The fixing shell 19 is fixedly installed on one side of the base plate 3, and a mounting groove 20 is provided on the lower side of the fixing shell 19. The threaded rod 21 is rotatably installed in the mounting groove 20, and the lifting rod 22 is slidably installed in the mounting groove 20. The lifting rod 22 is threadedly connected to the threaded rod 21. The rubber plate 23 is fixedly installed at the lower end of the lifting rod 22. A rotating knob 24 is fixedly installed at the upper end of the threaded rod 21. The rotating knob 24 is located on the upper side of the fixed shell 19. The refrigerator / freezer can be easily moved by the moving wheel 4. By rotating the threaded rod 21 by rotating the knob 24, the lifting rod 22 and the rubber plate 23 are driven to descend and touch the ground, thus fixing the refrigerator / freezer.
[0030] To ensure that those skilled in the art can fully understand the technical solution, this application provides the following overall overview:
[0031] During use, the condensate that condenses at the back of the refrigerator compartment slides down the back of the refrigerator compartment to the V-shaped water collection tank 8. Then, the condensate is gathered in the center of the V-shaped water collection tank 8. The water level in the V-shaped water collection tank 8 is detected by a photoelectric water level sensor 9. When the water level of the condensate accumulates to the preset level, the photoelectric water level sensor 9 can send a signal to the control module 2. After receiving the signal, the control module 2 can start the micro vortex drain pump 14, so that the micro vortex drain pump 14 generates positive pressure and powerfully delivers the condensate through the first water supply pipe 13 and the second water supply pipe 15 to the upper side of the water receiving pan of the refrigeration unit 12. This effectively overcomes the pipe resistance and avoids drainage failure due to long pipes or slight blockage. At the same time, the self-limiting temperature PTC heating wire 18 is activated, so that the self-limiting temperature PTC heating wire 18 can melt the ice blockage that may occur in the pipe, completely solving the stubborn problem of ice blockage in the freezer compartment drain pipe.
[0032] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.
[0033] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.
Claims
1. A laboratory medical refrigeration freezer characterized in that, The container includes a housing (1) and a refrigeration mechanism (12). Two storage chambers (6) are located on the front side of the housing (1), and a back cavity (10) is located inside the rear side of the housing (1). A drainage mechanism (11) is located between the storage chambers (6) and the back cavity (10). The drainage mechanism (11) includes a first water pipe (13), a micro vortex drainage pump (14), and a second water pipe (15). A V-shaped water collection trough (8) is located on one side of the inner wall of the storage chambers (6). The first water pipe (13) is located between the V-shaped water collection trough (8) and the back cavity (10). Between the two, the micro vortex drainage pump (14) is fixedly installed on one side of the inner wall of the back cavity (10). The input end of the micro vortex drainage pump (14) is fixedly connected to one end of the first water supply pipe (13). A fixed bracket (16) is fixedly installed on one side of the inner wall of the back cavity (10). The second water supply pipe (15) is fixedly installed between the fixed brackets (16). The upper end of the second water supply pipe (15) is fixedly connected to the output end of the micro vortex drainage pump (14). A self-limiting temperature PTC heating wire (18) is provided around the second water supply pipe (15).
2. A laboratory medical refrigerator according to claim 1, characterized in that A photoelectric water level sensor (9) is installed on one side of the inner wall of the storage room (6). The photoelectric water level sensor (9) is located on the upper side of the V-shaped water collection tank (8) and corresponds to the middle of the V-shaped water collection tank (8). A control module (2) is installed on the upper side of the box body (1).
3. A laboratory medical refrigerator according to claim 2, characterized in that A bypass backup pipe (17) is provided on one side of the first water supply pipe (13) and the second water supply pipe (15), and a one-way duckbill valve is provided between the input end of the bypass backup pipe (17) and the first water supply pipe (13).
4. A laboratory medical refrigerator according to claim 1, characterized in that, The refrigeration mechanism (12) is located in the back cavity (10) and corresponds to the two storage chambers (6). The lower end of the second water pipe (15) corresponds to the refrigeration mechanism (12).
5. A laboratory medical refrigerator according to claim 4, characterized in that Several support strips are fixedly installed on both sides of the inner wall of the storage room (6), and a partition (7) is provided on the upper side of the corresponding two support strips.
6. A laboratory medical refrigerator according to claim 5, characterized in that The box (1) is fixedly installed with a base plate (3) on the lower side. Four moving wheels (4) are provided on the lower side of the base plate (3). Fixing mechanisms (5) are provided on both sides of the base plate (3). The fixing mechanism (5) includes a fixed shell (19), a threaded rod (21), a lifting rod (22), and a rubber plate (23).
7. A laboratory medical refrigerator according to claim 6, characterized in that The fixed shell (19) is fixedly installed on one side of the base plate (3). The fixed shell (19) has a mounting groove (20) on its lower side. The threaded rod (21) is rotatably installed in the mounting groove (20). The lifting rod (22) is slidably installed in the mounting groove (20). The lifting rod (22) is threadedly connected to the threaded rod (21). The rubber plate (23) is fixedly installed at the lower end of the lifting rod (22). A rotating knob (24) is fixedly installed at the upper end of the threaded rod (21). The rotating knob (24) is located on the upper side of the fixed shell (19).