Medical medicine refrigerating box suitable for household use

Abstract

The invention provides a medical medicine refrigerated container suitable for household use, which comprises a container body, a refrigerator door and a refrigerator door, the opening and closing door is mounted on the box body; the refrigerating system is mounted in the box body and is used for refrigerating; the cold accumulation agent is stored in the box body, can be cooled by the refrigerating system and can accumulate and release cold energy; the ventilation device is used for feeding the cold energy produced by the refrigerating system and / or the cold energy accumulated by the cold accumulation agent into the storage space; and the control switch system can control the refrigerating system to be in a closed state in a specific time period and control the temperature of the storage space to be in a target range by controlling the ventilation device when the refrigerating system is in the closed state. According to the medical medicine cold closet, the cold storage agent and the ventilation device are additionally arranged, so that the medicine cold closet can operate in a mute state during sleep at night, noise is not generated, and the rest of a patient at night is not affected, and therefore the sleep quality of the patient is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of household medical equipment, and in particular to a medical refrigerator suitable for household use. Background Art

[0002] Medical drug refrigerators are used to store drugs with special temperature requirements. They are mainly composed of a box, door, display, control panel, refrigeration system, etc. With the development of science and technology, there are more and more types of medical drug refrigerators; with the improvement of people's living standards, the requirements for medical drug refrigerators are also getting higher and higher.

[0003] Traditional medical medicine refrigerators are large medicine cabinets used in hospitals or pharmacies. They are large and not suitable for home use. With the aging of the population, the number of chronic patients is increasing, and home treatment and rehabilitation is currently a common way of recuperation. In this case, the storage of drugs requires a suitable container. At present, during home rehabilitation, the majority of the scenarios are that the drugs are placed at room temperature or directly in the refrigerator of a household refrigerator. Due to the large temperature changes in the refrigerator of a household refrigerator, the efficacy of the drugs may be adversely affected, especially for some active drugs, which require a strict and stable temperature range for storage (such as insulin for the treatment of diabetes, active drugs such as biologics for the treatment of ankylosing spondylitis, rheumatoid arthritis, psoriasis, etc.), otherwise it will lead to the loss of drug activity. In addition, mixing drugs with food also increases the possibility of bacterial contamination. Therefore, now there is a need for a container that is suitable for home use and can meet the temperature conditions for independent storage of drugs, so that medical drug refrigerator products suitable for home use have come into being.

[0004] Taking into account the convenience of taking medicines for people who are bedridden for a long time or have difficulty in moving, it is necessary to place this medicine refrigerator in a location that is convenient for patients to take, such as a bedside table or dressing table in the bedroom. In addition, the refrigeration system of the medicine refrigerator produces a lot of noise when running, and the physical condition of patients is generally poor. In order to ensure that patients have enough sleep time at night, it is particularly important to reduce the noise of the product, especially the noise during sleep. Therefore, how to design a medical medicine refrigerator that does not produce noise during a specific time period and is suitable for home use has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the technical defects of the prior art that the refrigeration system of the household medical refrigerator produces large noise during operation and easily affects the patient's sleep when operating at night, thereby providing a medical refrigerator that does not generate noise during a specific time period and is suitable for home use.

[0006] To this end, the present invention provides a medical medicine refrigerator suitable for home use, comprising: A box body with a storage space; A switch door installed on the box body for opening or closing the storage space; A refrigeration system installed inside the box body for refrigeration; A cold storage agent stored inside the box body, which can be cooled by the refrigeration system and can accumulate and release cold; A ventilation device for sending the cold generated by the refrigeration system and / or the cold accumulated by the cold storage agent into the storage space; A control switch system that can control the refrigeration system to be in a closed state during a specific time period, and can control the temperature of the storage space to be within a target range by controlling the ventilation device when the refrigeration system is in a closed state.

[0007] As a preferred solution, the ventilation device includes: At least one fan installed in the fan passage; A first air duct communicating with the air outlet of the fan passage, passing through the refrigeration system and / or the cold storage agent to be cooled; An air outlet passage provided inside the box body, having a plurality of air outlets communicating with the storage space; A first passage, one end of which communicates with the first air duct and the other end of which communicates with the air outlet passage; A return air passage provided inside the box body, having a plurality of return air inlets communicating with the storage space; A second air duct, one end of which communicates with the bottom of the return air passage and the other end of which communicates with the air inlet of the fan passage.

[0008] As a preferred solution, there is at least one return air passage, which is arranged near the switch door, and the return air inlets are opened on the inner side wall near the switch door; there is at least one air outlet passage, which is arranged away from the switch door, and the air inlets are opened on the inner side wall away from the switch door; The cross-sectional area of the air outlet passage is larger than that of the return air passage; and / or, the opening area of all the air outlets is larger than that of all the return air inlets.

[0009] As a preferred solution, it further includes: A second passage, one end of which communicates with the first air duct and the other end of which communicates with the top of the return air passage; A switch linkage structure, when the switch door is closed, the switch linkage structure closes the second passage; when the switch door is opened, the switch linkage structure opens the second passage.

[0010] As a preferred solution, the first air duct extends upward from the back of the box body to the top and then extends forward; The first channels are located at the top of the box body, there are two of them, one end is communicated with the first air duct, and the other end is communicated with the top opening of the air outlet channel; The second channels are located at the top of the box body, there are two of them, one end is communicated with the first air duct, and the other end is communicated with the top opening of the return air channel.

[0011] As a preferred solution, the switch linkage structure includes: Blocking switches, there are two of them, which are respectively rotatably installed inside the two second channels; Connecting bent rods, there are two of them, which have a rotating shaft section rotatably installed on the second channel, and a connecting section connected to the rotating shaft section and forming an angle of 80-100°. A connecting hole is provided at the end of the connecting section, and a connecting rod is rotatably installed in the connecting hole. The two ends of the connecting cross bar are respectively fixedly connected to the connecting rod; An elastic reset structure is arranged at one end of the top of the box body for pulling the connecting section close to it so that the blocking switch keeps the second channel open; A first rotating member is rotatably installed at the other end of the top of the box body, and is movably connected to one of the connecting rods close to the first rotating member through a first rotating arm and a movable rod; and is movably connected to the switch shaft through a second rotating arm; When the switch door is closed, the switch shaft is pressed, the switch shaft drives the first rotating member to rotate through the second rotating arm, and the first rotating member drives the connecting section of the two connecting bent rods to rotate through the first rotating arm, the movable rod, the connecting rod and the connecting cross bar, and then drives the rotating shaft section to rotate, so that the blocking switch rotates to a state of keeping the second channel closed; When the switch door is opened, the switch shaft is no longer pressed, the elastic reset structure pushes the connecting section through the connecting cross bar, and then pushes the rotating shaft section to rotate, so that the blocking switch rotates to a state of keeping the second channel open; at this time, the elastic reset structure pushes the first rotating arm to rotate through the connecting cross bar, the connecting rod and the movable rod, and the second rotating arm rotates to push the switch shaft to extend out a certain length.

[0012] As a preferred solution, it further includes: A condensate collection pipe is arranged at the bottom of the first air duct; A condensate drying tray is arranged below the condensate collection pipe; Condensate linkage switch structure. When the switch door is closed, the condensate linkage switch structure closes the condensate collection pipe; when the switch door is opened, the condensate linkage switch structure opens the condensate collection pipe.

[0013] As a preferred solution, the condensate linkage switch structure includes: A condensate switch for opening or closing the condensate collection pipe; A first linkage rod, including a first section of the first linkage rod rotatably installed on the condensate collection pipe, and the condensate switch is rotatably installed inside the condensate collection pipe through the first section of the first linkage rod; a second section of the first linkage rod integrally connected to one end of the first section of the first linkage rod and forming an angle of 80 - 100°, and a third section of the first linkage rod integrally connected to the other end of the second section of the first linkage rod and forming an angle of 80 - 100°; A second linkage rod, the bottom end of which is rotatably connected through a second linkage rod rotating shaft to a through hole provided at the tail end of the third section of the first linkage rod; A second rotating member rotatably installed on the top of the box body, having a fourth rotating arm and a fifth rotating arm, the fourth rotating arm is movably connected to the third rotating arm of the first rotating member through a connecting longitudinal rod, and the fifth rotating arm is movably connected to the top end of the second linkage rod; When the switch door is closed, the condensate switch closes the condensate collection pipe; When the switch door is opened, under the elastic force of the elastic reset structure, the first rotating member rotates, drives the second rotating member to rotate through the connecting longitudinal rod, and then drives the first linkage rod to rotate through the second linkage rod, driving the condensate switch to the open state.

[0014] As a preferred solution, it further includes: A makeup air channel communicated with a position of the second air duct close to the fan channel; A makeup air switch rotatably installed inside the makeup air channel for opening or closing the makeup air channel; A makeup air rotating shaft rotatably installed on the makeup air channel, and the makeup air switch is rotatably installed inside the makeup air channel through the makeup air rotating shaft; A makeup air connecting shaft, one end of which is fixedly connected to the makeup air rotating shaft at an angle of 80 - 100°, and the other end is a free end; A makeup air connecting rod, one end of which is movably connected to the free end of the makeup air connecting shaft through a makeup air connecting rod rotating shaft, and the other end is installed on the second linkage rod; When the switch door is closed, the second linkage rod controls the makeup air switch to rotate to the state of closing the makeup air channel through the makeup air connecting rod, the makeup air connecting shaft and the makeup air rotating shaft; When the door is opened, the second linkage rod controls the air make-up switch to rotate to a state of opening the air make-up channel through the air make-up connecting rod, the air make-up connecting shaft and the air make-up rotating shaft.

[0015] As a preferred solution, the refrigeration system includes a compressor, a condenser and an evaporator, and the condensate drying tray is arranged above the condenser; It further includes a cold storage space, through which the first air duct passes through the middle. A plurality of heat exchange fins are arranged in the middle of the part of the first air duct located in the cold storage space; The pipeline of the evaporator is arranged around the outer wall of the cold storage space; a heat insulation layer is arranged on the outer side surface of the cold storage space.

[0016] The technical solution provided by the present invention has the following advantages: 1. The medical drug refrigerator suitable for household use according to the present invention includes a box body, a door, a refrigeration system, a cold storage agent, a ventilation device and a control switch system; the box body has a storage space for storing drugs, and the door is installed on the box body to open or close the storage space for convenient access to drugs; the refrigeration system is installed inside the box body for refrigeration; the cold storage agent is stored inside the box body, which can be cooled by the refrigeration system to store cold energy and can release cold energy when the refrigeration system stops; the ventilation device is used to send the cold energy generated by the refrigeration device and / or the cold energy stored by the cold storage agent into the storage space; the control switch system can control the refrigeration system to be in a closed state during a specific time period (such as night sleep time), and can control the temperature of the storage space to be within the target range by controlling the ventilation device; The medical drug refrigerator of the present invention adds a cold storage agent and a ventilation device on the basis of the existing refrigerator, and adjusts the refrigeration system and the control switch system; during normal operation during the day, the refrigeration system is normally started for refrigeration, and the control switch system controls the ventilation device to blow cold air into the storage space of the box body according to the temperature inside the box body to keep the temperature in the storage space of the box body within the target range; during silent operation at night, the refrigeration system is turned off, and the control switch system controls the ventilation device to absorb the cold energy released by the cold storage agent and blow it into the storage space of the box body according to the temperature inside the box body; the medical drug refrigerator of the present invention adds a cold storage agent and a ventilation device, which can make the medical drug refrigerator operate in a silent state during night sleep time, without generating noise and not affecting the patient's rest at night, thus being beneficial to improving the patient's sleep quality.

[0017] 2. For the household - applicable medical drug refrigerator of the present invention, the ventilation device includes a fan, a first air duct, a first channel, an air - outlet channel, a return - air channel, and a second air duct. There are multiple fans provided, and the control switch system can control one or more fans to start according to needs to control the wind speed. The first air duct passes through the refrigeration system and / or the cold - storage agent. When the air passes through the first air duct, it can absorb cold to carry the cold to the storage space inside the box body, cooling the storage space. The air - outlet channel is connected to the first air duct through the first channel, receives the cold air from the first air duct, and sends the cold air into the storage space of the box body through a number of air outlets provided. After the air pressure in the storage space of the box body rises, it enters the air - return opening and is transported back to the fan channel through the return - air channel and the second air duct to complete a cycle.

[0018] 3. For the household - applicable medical drug refrigerator of the present invention, the cross - sectional area of the air - outlet channel is larger than that of the return - air channel, so that the air volume transported by the fan through the air - outlet channel to the storage space is slightly larger than the air volume returning from the return - air channel. This can keep the storage space at a positive pressure, prevent external hot air from entering the storage space, and reduce the refrigeration efficiency; and / or, the opening area of all air outlets is larger than the opening area of all air - return openings, also aiming to make the air volume input into the storage space slightly larger than the air volume returning from the storage space to keep the storage space at a positive pressure and avoid the reduction of refrigeration efficiency caused by the entry of external hot air.

[0019] 4. For the household - applicable medical drug refrigerator of the present invention, the return - air channel is arranged near the opening and closing door, and the air - outlet channel is arranged far from the opening and closing door. The cold is released from the inside out, which can improve the refrigeration efficiency. Moreover, when the opening and closing door is opened, part of the external hot air near the opening of the storage space will be sucked away by the return - air channel, which can reduce the influence of opening and closing the door on the internal temperature of the refrigerator.

[0020] 5. The medical drug refrigerator suitable for household use according to the present invention further includes a second channel and a switch linkage structure. One end of the second channel is communicated with the first air duct, and the other end is communicated with the top of the return air channel. When the switch door is closed, the switch linkage structure closes the second channel. The air generated by the blower enters the air outlet channel through the first air duct and the first channel, and is input into the interior of the box body through the air outlet. The air inside the box body is returned to the air inlet side of the blower channel through the air return port, the return air channel, and the second air duct. When the switch door is opened, the switch linkage structure opens the second channel. At this time, after the air generated by the blower enters the first air duct, a part of it enters the air outlet channel through the first channel, and the other part enters the return air duct through the second channel. The air entering the air outlet channel is transported to the storage space through the air outlet. A part of the air entering the return air duct is blown outwards through some of the air return ports, and the other part enters the second air duct downward to accelerate circulation. After the second channel is opened, the total amount of air transported into the storage space is more, and the cold air output from the air return port near the switch door position can prevent internal and external heat exchange. Since the internal space of the refrigerator is small, the temperature inside the refrigerator is likely to change rapidly when taking and placing drugs. The above settings can avoid the rapid change of the temperature inside the refrigerator caused by taking and placing drugs.

[0021] 6. The medical drug refrigerator suitable for household use according to the present invention further includes a condensate collection pipe, a condensate drying tray, and a condensate linkage switch structure. The condensate collection pipe is arranged at the bottom of the first air duct. When the air passing through the first air duct is cooled by the refrigeration device or the cold storage agent, condensate is easily precipitated, and the condensate slides down along the first air duct to the condensate collection pipe for collection. The condensate drying tray is arranged above the refrigeration device. When the switch door is closed, the condensate linkage switch structure closes the condensate collection pipe and maintains the closed state. When the switch door is opened, the condensate linkage switch structure opens the condensate collection pipe and releases the condensate onto the condensate drying tray.

[0022] 7. The medical drug refrigerator suitable for household use according to the present invention further includes a structure for supplementing air, including a makeup air channel, a makeup air switch, a makeup air rotating shaft, a makeup air connecting shaft, and a makeup air connecting rod. When the switch door is closed, the air is in internal circulation at this time, and the second linkage rod controls the makeup air switch to close the makeup air channel through the makeup air connecting rod, the makeup air connecting shaft, and the makeup air rotating shaft. When the switch door is opened, it is necessary to increase the air supply volume to avoid the temperature inside the box rising too fast. At this time, the second linkage rod controls the makeup air switch to open the makeup air channel through the makeup air connecting rod, the makeup air connecting shaft, and the makeup air rotating shaft, so that the blower can suck more air volume and blow it into the box body. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the prior art or the specific embodiments of the present invention, the following briefly introduces the drawings used in the description of the prior art or the specific embodiments.

[0024] Figure 1It is a schematic diagram of the overall structure of a medical drug refrigerator suitable for household use in the present invention.

[0025] Figure 2 It is Figure 1 A three-dimensional view after removing the outer shell.

[0026] Figure 3 It is Figure 2 An enlarged schematic diagram of the structure of part A in

[0027] Figure 4 It is Figure 2 A longitudinal section diagram of

[0028] Figure 5 It is Figure 2 A top cross-section diagram.

[0029] Figure 6 It is Figure 5 An enlarged schematic diagram of the structure of part B in

[0030] Figure 7 It is Figure 2 A longitudinal section diagram of the side connected to the switch door of

[0031] Figure 8 It is Figure 7 A longitudinal section diagram after the cut surface is adjusted outward by a certain distance of

[0032] Figure 9 It is Figure 1 Another angle view.

[0033] Figure 10 It is Figure 9 An enlarged schematic diagram of the structure of part C in

[0034] Reference numerals: 1, box body; 11, switch door; 21, fan; 22, fan channel; 23, first air duct; 24, air outlet channel; 241, air outlet; 25, first channel; 26, return air channel; 261, return air inlet; 27, second air duct; 28, second channel; 31, plugging switch; 32, connecting bent rod; 321, rotating shaft section; 322, connecting section; 323, connecting hole; 33, connecting rod; 34, connecting cross bar; 41, first rotating member; 411, first rotating arm; 412, second rotating arm; 413, third rotating arm; 42, movable rod; 43, switch shaft; 51, condensate collection pipe; 52, condensate drying tray; 53, condensate switch; 54, first linkage rod; 541, first section of the first linkage rod; 542, second section of the first linkage rod; 543, third section of the first linkage rod; 55, second linkage rod; 551, rotating shaft of the second linkage rod; 61. Second rotating member; 611. Fourth rotating arm; 612. Fifth rotating arm; 62. Connecting longitudinal rod; 71. Compressor; 72. Condenser; 73. Evaporator; 74. Cold storage space; 75. Heat exchange fin; 81. Makeup air passage; 82. Makeup air switch; 83. Makeup air rotating shaft; 84. Makeup air connecting shaft; 85. Makeup air connecting rod; 851. Makeup air connecting rod rotating shaft. Detailed implementation manners

[0035] To enable those skilled in the art to better understand this solution, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0036] It should be noted that the terms "first", "second", etc. in the claims and the specification of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the clearly listed steps or units, but may also include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0037] In the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation. And, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present application can be understood according to specific circumstances. In addition, the meaning of the term "plurality" should be two or more. It should be noted that, without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other.

[0038] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. Embodiment

[0039] This embodiment provides a medical drug refrigerator suitable for household use, such as Figure 1 shown, which includes a box body 1 and a switch door 11, as well as a refrigeration system, a cold storage agent, and a ventilation device installed inside the box body 1, and also includes a control switch system for controlling the working state of the drug refrigerator.

[0040] Among them, the box body 1 has a storage space for storing drugs; the switch door 11 is installed on the box body 1 for opening or closing the storage space to pick up and place drugs. The refrigeration system is installed inside the box body 1 for refrigeration; the cold storage agent is stored inside the box body 1, which can be cooled by the refrigeration system and can accumulate and release cold; the ventilation device is used to send the cold generated by the refrigeration system and / or the cold accumulated by the cold storage agent into the storage space; the control switch system can control the refrigeration system to be in a closed state during a specific time period, and when the refrigeration system is in a closed state, control the temperature of the storage space to be within the target range by controlling the ventilation device.

[0041] The medical drug refrigerator of this embodiment adds a cold storage agent and a ventilation device on the basis of the existing refrigerator, and adjusts the refrigeration system and the control switch system.

[0042] The medical refrigerator of this embodiment has at least two working states, one is the normal working state and the other is the silent working state; when in the normal working state (usually during the day), the refrigeration system starts refrigerating normally, and the control switch system controls the ventilation device to blow cold air into the storage space of the box body 1 according to the temperature inside the box body 1 (a temperature sensor is provided at the top of the box body 1 and is in signal connection with the control switch system), so that the temperature in the storage space of the box body 1 is maintained within the target range; when in the silent working state (usually at night), the refrigeration system is turned off, and the control switch system controls the air supply speed of the ventilation device according to the temperature inside the box body 1, and the air blows into the storage space of the box body 1 after absorbing the cold released by the cold storage agent, and uses the cold accumulated by the cold storage agent itself to cool the storage space of the box body 1.

[0043] The medical drug refrigerator of the present invention adds a cold storage agent and a ventilation device, and can make the medical drug refrigerator operate in a silent state during the night sleep time, without generating noise and not affecting the patient's rest at night, thus being beneficial to improving the patient's sleep quality.

[0044] In addition, in the silent working state, if the control switch system has adjusted the rotational speed of the fan to the maximum, but the temperature inside the box body 1 still cannot be maintained within the required temperature range, the control switch system can automatically adjust the silent working state to the normal working state; the starting periods of the normal working state and the silent working state can also be set to achieve regular automatic switching. The above-mentioned control switch system can be implemented by a PLC, which belongs to the prior art and will not be specifically described herein.

[0045] Specifically, as Figure 4 、 5 shown in Figures 6 and 8, the ventilation device includes a fan 21, a fan passage 22, a first air duct 23, an air outlet passage 24, a first passage 25, a return air passage 26, and a second air duct 27. At least one fan 21 is provided and installed in the fan passage 22; the first air duct 23 is communicated with the air outlet of the fan passage 22 and passes through the refrigeration system and / or the refrigerant so as to be cooled; the air outlet passage 24 is arranged inside the box body 1 and has a plurality of air outlets 241 communicated with the storage space; one end of the first passage 25 is communicated with the first air duct 23, and the other end is communicated with the air outlet passage 24; the return air passage 26 is arranged inside the box body 1 and has a plurality of return air inlets 261 communicated with the storage space; one end of the second air duct 27 is communicated with the bottom of the return air passage 26, and the other end is communicated with the air inlet of the fan passage 22.

[0046] At least one fan 21 is provided and all are arranged in the fan passage 22. The control switch system mainly adjusts the air circulation speed by controlling the number of fans 21 started, the rotational speed, etc., adjusts the cooling capacity supplied to the box body 1, and further cools the box body 1; arranging all the fans 21 in the fan passage 22 is convenient for unified air intake and air outlet.

[0047] After the equipment is started, the air generated by the rotation of the fan 21 is sent into the first air duct 23 through the air outlet of the fan passage 22. The first air duct 23 passes through the refrigeration system and / or the refrigerant, and the air absorbs cold and cools down when passing through the first air duct 23. After passing through the first passage 25 and the air outlet passage 24, it is sent into the storage space of the box body 1 through the air outlets 241 opened on the air outlet passage 24 to cool the storage space inside the box body 1; the air inside the box body 1 enters the return air passage 26 through the return air inlets 261, and further passes through the second air duct 27 to be communicated with the air inlet of the fan passage 22, thus completing a cycle.

[0048] In this embodiment, there are two return air channels 26, which are arranged at both side wall positions close to the switch door 11. The return air openings 261 are opened on the inner side wall close to the switch door 11 and communicate with the return air channels 26. There is at least one air outlet channel 24, which is arranged at a position far from the switch door 11. The air inlet 241 is opened on the inner side wall far from the switch door 11. The return air channels 26 are arranged close to the switch door 11, and the air outlet channels 24 are arranged far from the switch door 11. The cooling capacity is released from the inside to the outside, which can improve the refrigeration efficiency. Moreover, when the switch door 11 is opened, part of the external hot air close to the opening of the storage space will be sucked away by the return air channels 26, which can reduce the influence of the opening and closing of the switch door 11 on the internal temperature of the refrigerator box.

[0049] The cross-sectional area of the air outlet channel 24 is larger than that of the return air channel 26; and / or, the opening area of all the air inlets 241 is larger than the opening area of all the return air openings 261. With the above settings, the air volume delivered by the fan 21 to the storage space through the air outlet channel 24 can be slightly larger than the air volume returned from the return air channel 26, so that the storage space can maintain a positive pressure, avoiding the entry of external hot air into the storage space and reducing the refrigeration efficiency.

[0050] Preferably, as Figures 5 - 6 shown, it further includes a second channel 28 and a switch linkage structure. One end of the second channel 28 communicates with the first air duct 23, and the other end communicates with the top of the return air channel 26. The function of the switch linkage structure is that when the switch door 11 is closed, the switch linkage structure closes the second channel 28; when the switch door 11 is opened, the switch linkage structure opens the second channel 28.

[0051] In this embodiment, the first air duct 23 extends upward from the back of the box body 1 to the top and then extends forward; the first channels 25 are located at the top of the box body 1, there are two of them, one end communicates with the first air duct 23, and the other end communicates with the top opening of the air outlet channel 24; the second channels 28 are located at the top of the box body 1, there are two of them, one end communicates with the first air duct 23, and the other end communicates with the top opening of the return air channel 26.

[0052] Specifically, as Figures 2 - 3As shown in the figure, the switch linkage structure includes: a plugging switch 31, a connecting bent rod 32, an elastic reset structure, and a first rotating member 41; where: there are two plugging switches 31, which are respectively rotatably installed inside the two second channels 27; there are two connecting bent rods 32, which have a rotating shaft section 321 rotatably installed on the second channel 27, and a connecting section 322 connected to the rotating shaft section 321 at an angle of about 90°. A connecting hole 323 is provided at the end of the connecting section 322, and a connecting rod 33 is rotatably installed in the connecting hole 323. Both ends of the connecting cross bar 34 are fixedly connected to the connecting rod 33; the elastic reset structure is arranged at one end of the top of the box body 1 and is used to pull the connecting section 322 close to it, so that the plugging switch 31 maintains the state of opening the second channel 28; the first rotating member 41 is rotatably installed at the other end of the top of the box body 1 and is movably connected to one connecting rod 33 close to the first rotating member 41 through a first rotating arm 411 and a movable rod 42; and is movably connected to the switch shaft 43 through a second rotating arm 412.

[0053] When the switch door 11 is closed, the switch shaft 43 is pressed. The switch shaft 43 drives the first rotating member 41 to rotate through the second rotating arm 412. The first rotating member 41 drives the connecting section 322 of the two connecting bent rods 32 to rotate through the first rotating arm 411, the movable rod 42, the connecting rod 33, and the connecting cross bar 34, and then drives the rotating shaft section 321 to rotate, so that the plugging switch 31 rotates to maintain the state of closing the second channel 28.

[0054] When the switch door 11 is opened, the switch shaft 43 is no longer pressed. The elastic reset structure pushes the connecting section 322 through the connecting cross bar 34, and then pushes the rotating shaft section 321 to rotate, so that the plugging switch 31 rotates to maintain the state of opening the second channel 28; at this time, the elastic reset structure pushes the first rotating arm 411 to rotate through the connecting cross bar 34, the connecting rod 33, and the movable rod 42, and the second rotating arm 412 rotates to push the switch shaft 43 to extend out a certain length.

[0055] Preferably, as Figures 7 - 10 shown in the figure, this embodiment further includes a condensate collection pipe 51, a condensate drying tray 52, and a condensate linkage switch structure; where the condensate collection pipe 51 is arranged at the bottom of the first air duct 23; the condensate drying tray 52 is arranged below the condensate collection pipe 51; the function of the condensate linkage switch structure is that when the switch door 11 is closed, the condensate linkage switch structure closes the condensate collection pipe 51; when the switch door 11 is opened, the condensate linkage switch structure opens the condensate collection pipe 51.

[0056] Specifically, asFigures 9 - 10 As shown, the condensate interlocking switch structure includes: a condensate switch 53, a first linkage rod 54, a second linkage rod 55, and a second rotating member 61.

[0057] Among them, the condensate switch 53 is used to open or close the condensate collection pipe 51. The structure of the condensate switch is a flip-type switch, and its structure is similar to that of the plugging switch 31. The first linkage rod 54 includes a first section 541 of the first linkage rod rotatably installed on the condensate collection pipe 51. The condensate switch 53 is rotatably installed inside the condensate collection pipe 51 through the first section 541 of the first linkage rod. A second section 542 of the first linkage rod integrally connected to one end of the first section 541 at an angle of about 90°, and a third section 543 of the first linkage rod integrally connected to the other end of the second section 542 at an angle of about 90°. The bottom end of the second linkage rod 55 is rotatably connected to a through hole provided at the end of the third section 543 of the first linkage rod through a second linkage rod rotating shaft 551. The second rotating member 61 is rotatably installed on the top of the box body 1 and has a fourth rotating arm 611 and a fifth rotating arm 612. The fourth rotating arm 611 is movably connected to the third rotating arm 413 of the first rotating member 41 through a connecting vertical rod 62, and the fifth rotating arm 612 is movably connected to the top end of the second linkage rod 55.

[0058] When the switch door 11 is closed, the condensate switch 53 closes the condensate collection pipe 51. When the switch door 11 is opened, under the elastic force of the elastic reset structure, the first rotating member 41 rotates, drives the second rotating member 61 to rotate through the connecting vertical rod 62, and then drives the first linkage rod 51 to rotate through the second linkage rod 55, driving the condensate switch 53 to the open state.

[0059] As an improved technical solution, it further includes a makeup air structure, as Figures 9 - 10 shown, which specifically includes a makeup air channel 81, a makeup air switch 82, a makeup air rotating shaft 83, a makeup air connecting shaft 84, and a makeup air connecting rod 85. Among them, the makeup air channel 81 communicates with a position of the second air duct 27 close to the fan channel 22. The makeup air switch 82 is rotatably installed inside the makeup air channel 81 and is used to open or close the makeup air channel 81. The makeup air rotating shaft 83 is rotatably installed on the makeup air channel 81, and the makeup air switch 82 is rotatably installed inside the makeup air channel 81 through the makeup air rotating shaft 83. One end of the makeup air connecting shaft 84 is fixedly connected to the makeup air rotating shaft 83 at an angle of 80-100°, and the other end is a free end. One end of the makeup air connecting rod 85 is movably connected to the free end of the makeup air connecting shaft 84 through a makeup air connecting rod rotating shaft 851, and the other end is installed on the second linkage rod 55.

[0060] When the door 11 is closed, the second linkage rod 55 controls the air make-up switch 82 to rotate to a state of closing the air make-up passage 81 through the air make-up connecting rod 85, the air make-up connecting shaft 84 and the air make-up rotating shaft 83; when the door 11 is opened, the second linkage rod 55 controls the air make-up switch 82 to rotate to a state of opening the air make-up passage 81 through the air make-up connecting rod 85, the air make-up connecting shaft 84 and the air make-up rotating shaft 83.

[0061] In this embodiment, as Figure 2 , 4 , as shown in FIGS. 7, the refrigeration system includes a compressor 71, a condenser 72 and an evaporator 73, and the condensate drying tray 52 is arranged above the condenser 72. It further includes a cold storage space 74, through which the first air duct 23 passes through the middle. A plurality of heat exchange fins 75 are arranged in the middle of the part of the first air duct 23 located in the cold storage space 74. The pipeline of the evaporator 73 is arranged around the outer wall of the cold storage space 74; a heat preservation layer is arranged on the outer side surface of the cold storage space 74.

[0062] The working process of the medical drug refrigerator suitable for household use in this embodiment is as follows: When in a normal working state, the control switch system controls the refrigeration system to start, and devices such as the compressor 71, the condenser 72, and the evaporator 73 work normally. The pipeline of the evaporator 73 cools the cold storage space 74, and the cold storage agent is placed inside the cold storage space 74. At this time, the cold storage agent absorbs heat and stores cold; According to the temperature in the storage space of the box body 1, the control switch system controls the starting quantity and rotation speed of the fan 21. After the wind generated by the fan 21 is output from the air outlet of the fan passage 22, it enters the first air duct 23. The first air duct 23 passes through the cold storage space 74. Therefore, the wind entering the first air duct 23 is cooled, enters the air outlet passage 24 after passing through the first passage 25, and is further input into the storage space of the box body 1 through a plurality of air outlets 241 opened, so as to cool the storage space of the box body 1; the air in the storage space of the box body 1 enters the return air passage 26 through the air return port 261, and then is communicated with the air inlet of the fan passage 22 through the second air duct 27, thus forming a cycle; The above cycle is the wind circulation state when the door 11 is closed. When the door 11 is closed, the switch shaft 43 is pressed. The switch shaft 43 drives the first rotating member 41 to rotate through the second rotating arm of the first rotating member 41. The first rotating member 41 drives the connecting section 322 of the two connecting bent rods 32 to rotate through the first rotating arm 411, the movable rod 42, the connecting rod 33 and the connecting cross bar 34, and further drives the rotating shaft section 321 to rotate, so that the blocking switch 31 rotates to a state of keeping the second passage 28 closed.

[0063] When the switch door 11 is opened, the switch shaft 43 is no longer pressed. The elastic reset structure pushes the two connecting segments 322 through the connecting cross bar 34, and then pushes the two rotating shaft segments 321 to rotate, so that the blocking switch rotates to the state of keeping the second channel 28 open. At this time, the elastic reset structure pushes the first rotating arm 411 to rotate through the connecting cross bar 34, the connecting rod 33 and the movable rod 42, and then pushes the second rotating arm 412 to rotate, so that the switch shaft 43 is pushed to extend outward by a certain length. At this time, the change in the wind circulation state is as follows: The wind generated by the fan 21 is output from the air outlet of the fan channel 22, enters the first air duct 23, and the first air duct 23 passes through the cold storage space 74. Therefore, the wind entering the first air duct 23 is cooled, enters the air outlet channel 24 after passing through the first channel 25, and is further input into the storage space inside the box body 1 through the plurality of air outlets 241 opened, so as to cool the storage space of the box body 1. The cold air in the first air duct 23 can also enter the return air duct 26 through the second channel 28, and is further input into the internal space of the box body 1 through some of the return air openings 261 opened. The air in the storage space of the box body 1 or the external air enters the return air duct 26 through some of the return air openings 261, and then is communicated with the air inlet of the fan channel 22 through the second air duct 27, thus forming a cycle.

[0064] When the preferred solution includes an air supply structure, after the switch door 11 is opened, the switch shaft 43 is no longer pressed. Driven by the elastic reset structure, the first rotating member 41 rotates, so that the switch shaft 43 protrudes outward by a certain length. At the same time, the rotation of the first rotating member 41 pulls the connecting vertical rod 62 to move, the connecting vertical rod 62 drives the second rotating member 61 to rotate, the rotation of the second rotating member 61 drives the second linkage rod 55 to move, the movement of the second linkage rod 55 acts through the air supply connecting rod, drives the air supply connecting shaft 84 through the air supply connecting rod rotating shaft 851, and finally drives the air supply rotating shaft 83 to drive the air supply switch 82 to rotate to open the air supply channel 81. After the air supply channel 81 is opened, more air enters the fan channel 22 through the air supply channel 81. At this time, the air sent by the fan 21 to the first air duct 23 can be blown out through all the return air openings 261 after blowing to the return air duct 26 through the second channel 28, so as to form an air curtain at the opening position of the storage space, prevent internal and external heat exchange, and maintain the temperature in the storage space from rising rapidly.

[0065] Obviously, the above embodiments are only examples given for clear illustration, and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of this innovative technical solution.

Claims

1. A medical drug refrigerator suitable for home use, characterized in that, Comprising: A box body (1) having a storage space; A switch door (11) installed on the box body (1) for opening or closing the storage space; A refrigeration system installed inside the box body (1) for refrigeration; A cold storage agent stored inside the box body (1), which can be cooled by the refrigeration system and can accumulate and release cold; A ventilation device for sending the cold generated by the refrigeration system and / or the cold accumulated by the cold storage agent into the storage space; A control switch system capable of controlling the refrigeration system to be in a closed state during a specific time period and controlling the temperature of the storage space to be within a target range by controlling the ventilation device when the refrigeration system is in a closed state.

2. The medical drug refrigerator suitable for household use according to claim 1, characterized in that, The ventilation device includes: At least one fan (21) installed inside a fan passage (22); A first air duct (23) communicating with the air outlet of the fan passage (22) and passing through the refrigeration system and / or the cold storage agent to be cooled; An air outlet passage (24) provided inside the box body (1) and having a plurality of air outlets (241) communicating with the storage space; A first passage (25) having one end communicating with the first air duct (23) and the other end communicating with the air outlet passage (24); A return air passage (26) provided inside the box body (1) and having a plurality of return air inlets (261) communicating with the storage space; A second air duct (27) having one end communicating with the bottom of the return air passage (26) and the other end communicating with the air inlet of the fan passage (22).

3. The medical drug refrigerator suitable for household use according to claim 2, characterized in that: There is at least one return air passage (26) provided at a position close to the switch door (11), and the return air inlets (261) are opened on the inner side wall at a position close to the switch door (11); there is at least one air outlet passage (24) provided at a position far from the switch door (11), and the air inlets (241) are opened on the inner side wall at a position far from the switch door (11); The cross-sectional area of the air outlet passage (24) is larger than the cross-sectional area of the return air passage (26); and / or, the opening area of all the air outlets (241) is larger than the opening area of all the return air inlets (261).

4. The medical drug refrigerator suitable for household use according to claim 3, wherein, It further includes: A second passage (28) having one end communicating with the first air duct (23) and the other end communicating with the top of the return air passage (26); A switch linkage structure that closes the second passage (28) when the switch door (11) is closed and opens the second passage (28) when the switch door (11) is opened.

5. The medical drug refrigerator suitable for household use according to claim 4, characterized in that: The first air duct (23) extends upward from the back of the box body (1) to the top and then extends forward; the first passage (25) is located at the top of the box body (1) and there are two of them, with one end communicating with the first air duct (23) and the other end communicating with the top opening of the air outlet passage (24); the second passage (28) is located at the top of the box body (1) and there are two of them, with one end communicating with the first air duct (23) and the other end communicating with the top opening of the return air passage (26).

6. The medical drug refrigerator suitable for household use according to claim 5, characterized in that, The switch linkage structure includes: Blocking switches (31), two of them, respectively rotatably installed inside the two second channels (27); Connecting bent rods (32), two of them, having a rotating shaft section (321) rotatably installed on the second channel (27), and a connecting section (322) connected to the rotating shaft section (321) and forming an angle of 80 - 100°. A connecting hole (323) is provided at the end of the connecting section (322), and a connecting rod (33) is rotatably installed in the connecting hole (323). The two ends of the connecting cross bar (34) are respectively fixedly connected to the connecting rod (33); An elastic reset structure, arranged at one end of the top of the box body (1), for pulling the connecting section (322) close to it, so that the blocking switch (31) maintains the state of opening the second channel (28); A first rotating member (41), rotatably installed at the other end of the top of the box body (1), is movably connected to one connecting rod (33) close to the first rotating member (41) through a first rotating arm (411) and a movable rod (42); and is movably connected to a switch shaft (43) through a second rotating arm (412); When the switch door (11) is closed, the switch shaft (43) is pressed. The switch shaft (43) drives the first rotating member (41) to rotate through the second rotating arm (412). The first rotating member (41) drives the connecting sections (322) of the two connecting bent rods (32) to rotate through the first rotating arm (411), the movable rod (42), the connecting rod (33) and the connecting cross bar (34), and then drives the rotating shaft section (321) to rotate, so that the blocking switch (31) rotates to the state of closing the second channel (28); When the switch door (11) is opened, the switch shaft (43) is no longer pressed. The elastic reset structure pushes the two connecting sections (322) through the connecting cross bar (34), and then pushes the two rotating shaft sections (321) to rotate, so that the blocking switch (31) rotates to the state of opening the second channel (28); At this time, the elastic reset structure pushes the first rotating arm (411) to rotate through the connecting cross bar (34), the connecting rod (33), and the movable rod (42), and the second rotating arm (412) rotates to push the switch shaft (43) to extend out a certain length.

7. The medical drug refrigerator suitable for household use according to claim 6, characterized in that, It further includes: A condensate collection pipe (51), arranged at the bottom of the first air duct (23); A condensate drying tray (52), arranged below the condensate collection pipe (51); A condensate linkage switch structure, when the switch door (11) is closed, the condensate linkage switch structure closes the condensate collection pipe (51); when the switch door (11) is opened, the condensate linkage switch structure opens the condensate collection pipe (51).

8. The medical drug refrigerator suitable for household use according to claim 7, characterized in that, The condensate linkage switch structure includes: A condensate switch (53), used to open or close the condensate collection pipe (51); The first linkage rod (54) includes a first section of the first linkage rod (541) rotatably mounted on the condensate collection pipe (51), and the condensate switch (53) is rotatably mounted inside the condensate collection pipe (51) through the first section of the first linkage rod (541); a second section of the first linkage rod (542) integrally connected to one end of the first section of the first linkage rod (541) and forming an angle of 80-100°, and a third section of the first linkage rod (543) integrally connected to the other end of the second section of the first linkage rod (542) and forming an angle of 80-100°; The second linkage rod (55), the bottom end of which is rotatably connected to a through hole provided at the tail end of the third section of the first linkage rod (543) through a second linkage rod rotating shaft (551); The second rotating member (61) is rotatably mounted on the top of the box body (1), and has a fourth rotating arm (611) and a fifth rotating arm (612). The fourth rotating arm (611) is movably connected to the third rotating arm (413) of the first rotating member (41) through a connecting longitudinal rod (62), and the fifth rotating arm (612) is movably connected to the top end of the second linkage rod (55); When the switch door (11) is closed, the condensate switch (53) closes the condensate collection pipe (51); When the switch door (11) is opened, under the elastic force of the elastic reset structure, the first rotating member (41) rotates, drives the second rotating member (61) to rotate through the connecting longitudinal rod (62), and then drives the first linkage rod (51) to rotate through the second linkage rod (55), driving the condensate switch (53) to the open state.

9. The medical drug refrigerator suitable for household use according to claim 8, characterized in that, It further includes: The air supply replenishment channel (81) is communicated with a position of the second air duct (27) close to the fan channel (22); The air supply replenishment switch (82) is rotatably mounted inside the air supply replenishment channel (81) for opening or closing the air supply replenishment channel (81); The air supply replenishment rotating shaft (83) is rotatably mounted on the air supply replenishment channel (81), and the air supply replenishment switch (82) is rotatably mounted inside the air supply replenishment channel (81) through the air supply replenishment rotating shaft (83); The air supply replenishment connecting shaft (84), one end of which is fixedly connected to the air supply replenishment rotating shaft (83) at an angle of 80-100°, and the other end is a free end; The air supply replenishment connecting rod (85), one end of which is movably connected to the free end of the air supply replenishment connecting shaft (84) through an air supply replenishment connecting rod rotating shaft (851), and the other end is mounted on the second linkage rod (55); When the switch door (11) is closed, the second linkage rod (55) controls the air supply replenishment switch (82) to rotate to the state of closing the air supply replenishment channel (81) through the air supply replenishment connecting rod (85), the air supply replenishment connecting shaft (84) and the air supply replenishment rotating shaft (83); When the switch door (11) is opened, the second linkage rod (55) controls the air supply replenishment switch (82) to rotate to the state of opening the air supply replenishment channel (81) through the air supply replenishment connecting rod (85), the air supply replenishment connecting shaft (84) and the air supply replenishment rotating shaft (83).

10. The medical drug refrigerator suitable for household use according to claim 9, characterized in that: The refrigeration system includes a compressor (71), a condenser (72) and an evaporator (73), and the condensate drying tray (52) is arranged above the condenser (72); It further includes a cold storage space (74) through which the middle part of the first air duct (23) passes, and a plurality of heat exchange fins (75) are arranged in the middle of the part of the first air duct (23) located in the cold storage space (74); The pipeline of the evaporator (73) is arranged around the outer wall of the cold storage space (74); a heat insulation layer is arranged on the outer side surface of the cold storage space (74).

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