Medicine storage cabinet

Abstract

The utility model discloses a medicine storage cabinet. The medicine storage cabinet comprises a cabinet body, a semiconductor chilling plate and a control part, a cold end radiator matched with the cabinet body is arranged at the cold end of the semiconductor chilling plate, and a hot end radiator matched with the cabinet body is arranged at the hot end of the semiconductor chilling plate; the control part is connected with the semiconductor chilling plate and is used for switching the direction of current flowing through the semiconductor chilling plate and controlling gas extracted from the cabinet body to flow through the combination of the cold-end radiator and the hot-end radiator or the cold-end radiator and then return to the cabinet body; compared with the prior art, the cabinet body can operate in the refrigeration mode, the constant-temperature dehumidification mode and the temperature rising mode through control and adjustment, medicine under different storage conditions can be stored, and the application range is widened.

Description

Technical Field

[0001] This utility model relates to the field of medical technology, specifically to a medicine storage cabinet. Background Technology

[0002] Some medicines require storage under specific conditions. CN214841901U discloses a semiconductor-cooled medicine storage box, comprising a foamed box body, a semiconductor cooling system installed in the foamed box body, and a humidity sensor for detecting the internal humidity of the foamed box body. The foamed box body is equipped with a control system and an internal circulation dehumidification system. The control system compares the internal humidity of the foamed box body with the storage humidity, and triggers the internal circulation dehumidification system to open or close based on the comparison result. The internal circulation dehumidification system includes an internal circulation duct. An intake fan is provided at the air inlet of the internal circulation duct, and a return fan is provided at the air outlet of the internal circulation duct. Both the air inlet and outlet are connected to the foamed box body. A dehumidification component is installed in the internal circulation duct, and the condenser fins of the dehumidification component are embedded in the internal circulation duct. A water nozzle is provided in the internal circulation duct, and the water nozzle is connected to a drain pipe.

[0003] The aforementioned semiconductor-cooled drug storage box uses a semiconductor cooling system to cool the foam box and an internal circulation dehumidification system to dehumidify the foam box, ensuring that the drugs are stored in a low-temperature and dry environment inside the foam box.

[0004] However, the aforementioned semiconductor-cooled drug storage box is only applicable to this type of drug that needs to be stored under low-temperature and dry conditions, and its application scope is relatively limited. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a medicine storage cabinet to solve the problem that the application scope of existing semiconductor refrigeration medicine storage boxes is relatively limited.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a medicine storage cabinet, comprising:

[0007] Cabinet;

[0008] A semiconductor refrigeration chip, wherein the cold end of the semiconductor refrigeration chip is provided with a cold end heat sink that cooperates with the cabinet, and the hot end of the semiconductor refrigeration chip is provided with a hot end heat sink that cooperates with the cabinet.

[0009] The control unit is connected to the thermoelectric cooler and is used to switch the direction of the current flowing through the thermoelectric cooler and to control the flow of gas extracted from the cabinet through a combination of cold end heat sink and hot end heat sink or back into the cabinet after the cold end heat sink.

[0010] Technical principle:

[0011] This medicine storage cabinet has three modes: cooling mode, constant temperature and dehumidification mode, and heating mode, as detailed below:

[0012] 1. In cooling mode: The control unit controls the circuit along the positive direction to pass through the semiconductor cooling chip and controls the cold end heat sink to act on the cabinet. The gas drawn from the cabinet enters the cold end heat sink. The cold end of the semiconductor cooling chip cools the gas in the cold end heat sink. The cooled gas returns to the cabinet to lower the temperature inside the cabinet to the preset temperature for use.

[0013] 2. In constant temperature and dehumidification mode: The control unit controls the circuit along the positive direction to pass through the semiconductor cooling chip and controls the combination of cold end heat sink and hot end heat sink to act on the cabinet. The gas drawn from the cabinet enters the cold end heat sink. The cold end of the semiconductor cooling chip cools the gas in the cold end heat sink. The moisture in the gas condenses to form condensate and is then separated, completing the dehumidification of the gas. The dehumidified gas then enters the hot end heat sink. The hot end of the semiconductor cooling chip heats the gas in the hot end heat sink and returns to the cabinet to keep the temperature in the cabinet constant at a certain temperature (such as the original temperature).

[0014] 3. In heating mode: The control unit controls the circuit in the opposite direction to pass through the semiconductor cooling chip and control the cold end heat sink to act on the cabinet. The gas drawn from the cabinet enters the cold end heat sink. The cold end of the semiconductor cooling chip heats the gas in the cold end heat sink. The heated gas returns to the cabinet to increase the temperature inside the cabinet to the preset temperature for use.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This medicine storage cabinet mainly consists of a cabinet body, a semiconductor cooling chip, a cold end heat sink, a hot end heat sink, and a control unit. Through control and adjustment, the cabinet can operate in three modes: cooling mode, constant temperature and dehumidification mode, and heating mode, which can meet the storage needs of medicines under different storage conditions and expand its application range. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of local structure Figure 1 ;

[0019] Figure 3 for Figure 1 Schematic diagram of local structure Figure 2 ;

[0020] Figure 4 for Figure 1 The process flow diagram.

[0021] The reference numerals in the accompanying drawings include: cabinet 1, cabinet shell 101, support mesh plate 102, semiconductor cooling chip 2, cold end heat sink 3, hot end heat sink 4, hot end heating air duct 401, hot end cooling air duct 402, cooling fan 403, first three-way valve 5, circulating fan 6, bypass pipe 7, second three-way valve 8, external temperature and humidity sensor 9, water tray 10, controller 11, and heat recovery unit 12. Detailed Implementation

[0022] The present invention will be further described in detail below through specific embodiments:

[0023] like Figure 1 and Figure 4 As shown in the figure, this utility model embodiment proposes a medicine storage cabinet, including a cabinet body 1, a semiconductor cooling chip 2, and a control unit; the cold end of the semiconductor cooling chip 2 is provided with a cold end heat sink 3 that cooperates with the cabinet body 1, and its hot end is provided with a hot end heat sink 4 that cooperates with the cabinet body 1; the control unit is connected to the semiconductor cooling chip 2 and is used to switch the direction of the current flowing through the semiconductor cooling chip 2 and control the gas extracted from the cabinet body 1 to flow through the combination of the cold end heat sink 3 and the hot end heat sink 4 or to return to the cabinet body 1 after the cold end heat sink 3.

[0024] This medicine storage cabinet has three modes: cooling mode, constant temperature and dehumidification mode, and heating mode, as detailed below:

[0025] 1. In cooling mode: The control unit controls the circuit along the positive direction to pass through the semiconductor cooling chip 2 and controls the cold end heat sink 3 to act on the cabinet 1. The gas drawn from the cabinet 1 enters the cold end heat sink 3. The cold end of the semiconductor cooling chip 2 cools the gas in the cold end heat sink 3. The cooled gas returns to the cabinet 1 to lower the temperature inside the cabinet 1 to the preset temperature for use.

[0026] 2. In constant temperature and dehumidification mode: The control unit controls the circuit along the positive direction to pass through the semiconductor cooling chip 2 and controls the combination of cold end heat sink 3 and hot end heat sink 4 to act on the cabinet 1. The gas drawn from the cabinet 1 enters the cold end heat sink 3. The cold end of the semiconductor cooling chip 2 cools the gas in the cold end heat sink 3. The moisture in the gas condenses to form condensate and is then separated, completing the dehumidification of the gas. The dehumidified gas then enters the hot end heat sink 4. The hot end of the semiconductor cooling chip 2 heats the gas in the hot end heat sink 4 and returns to the cabinet 1 to keep the temperature and humidity in the cabinet 1 constant.

[0027] 3. In heating mode: The control unit controls the circuit in the opposite direction to pass through the semiconductor cooling chip 2 and controls the cold end heat sink 3 to act on the cabinet 1. The gas drawn from the cabinet 1 enters the cold end heat sink 3. The cold end of the semiconductor cooling chip 2 heats the gas in the cold end heat sink 3. The heated gas returns to the cabinet 1 to increase the temperature inside the cabinet 1 to the preset temperature for use.

[0028] This medicine storage cabinet mainly consists of a cabinet body 1, a semiconductor cooling chip 2, a cold end heat sink 3, a hot end heat sink 4, and a control unit. Through control and adjustment, the cabinet body 1 can operate in three modes: cooling mode, constant temperature and dehumidification mode, and heating mode, which can meet the storage needs of medicines under different storage conditions and enrich the scope of use.

[0029] like Figure 4 As shown, according to another embodiment of the present invention, in a medicine storage cabinet, the inlet of the cold end radiator 3 is connected to the air outlet of the cabinet body 1, the air inlet of the cabinet body 1 is connected to a return air pipe, the outlet of the hot end radiator 4 is connected to the return air pipe, and the end of the return air pipe away from the air inlet of the cabinet body 1, the outlet of the cold end radiator 3 and the inlet of the hot end radiator 4 are connected by a first three-way valve, the first three-way valve being controlled by a control unit to control the conduction path.

[0030] 1. In cooling mode: The control unit controls the circuit along the positive direction to pass through the semiconductor cooling chip 2 and controls the first three-way valve to disconnect between the outlet of the cold end heat sink 3 and the inlet of the hot end heat sink 4. At this time, only the cold end heat sink 3 acts on the cabinet 1. The gas in the cabinet 1 is drawn out from its outlet and then enters the cold end heat sink 3. The cold end of the semiconductor cooling chip 2 cools the gas in the cold end heat sink 3. The cooled gas is guided to the inlet of the cabinet 1 through the return gas pipe to return to the cabinet 1 and lower the temperature inside the cabinet 1 to the preset temperature for use.

[0031] 2. In constant temperature dehumidification mode: The control unit controls the circuit along the positive direction through the semiconductor cooling chip 2 and controls the first three-way valve to connect between the outlet of the cold end heat sink 3 and the inlet of the hot end heat sink 4. At this time, the combination of the cold end heat sink 3 and the hot end heat sink 4 acts on the cabinet 1. The gas in the cabinet 1 is drawn out from its outlet and then enters the cold end heat sink 3. The cold end of the semiconductor cooling chip 2 cools the gas in the cold end heat sink 3. The moisture in the gas condenses to form condensate and is then separated, completing the dehumidification of the gas. The dehumidified gas then enters the hot end heat sink 4, and the hot end of the semiconductor cooling chip 2 cools the gas in the hot end heat sink 4. The gas inside the radiator 4 is heated, and the heated gas is guided through the return gas pipe to the air inlet of the cabinet 1 to return to the cabinet 1, so as to keep the temperature and humidity in the cabinet 1 constant. In this mode, the first three-way valve can also be controlled to connect the end of the return gas pipe away from the air inlet of the cabinet 1, the outlet of the cold end radiator 3 and the inlet of the hot end radiator 4. Then, the opening of the first three-way valve and the return gas pipe and the hot end radiator 4 can be adjusted to regulate the flow rate of the dehumidified gas directly discharged from the return gas pipe and entering the hot end radiator 4 for heating, so as to meet the requirement of keeping the temperature and humidity constant after regulation.

[0032] 3. In heating mode: The control unit controls the circuit in the opposite direction to pass through the semiconductor cooling chip 2 and controls the first three-way valve to disconnect between the outlet of the cold end heat sink 3 and the inlet of the hot end heat sink 4. At this time, only the cold end heat sink 3 acts on the cabinet 1. The gas in the cabinet 1 is drawn out from its outlet and then enters the cold end heat sink 3. The cold end of the semiconductor cooling chip 2 heats the gas in the cold end heat sink 3. The heated gas is guided through the return gas pipe to the air inlet of the cabinet 1 to return to the cabinet 1 and heat the temperature inside the cabinet 1 to the preset temperature for use.

[0033] A circulating fan 6 is provided between the inlet of the cold end heat sink 3 and the air outlet of the cabinet 1. The circulating fan 6 operates to provide power to draw the gas in the cabinet 1 out of its air outlet and back into the cabinet 1.

[0034] In order to recover and utilize the waste heat generated during operation, such as Figure 4 As shown, according to another embodiment of the present invention, in a medicine storage cabinet, the circulating fan 6 is connected to the air outlet of the cabinet 1 through a first pipe, and the circulating fan 6 is connected to the inlet of the cold end radiator 3 through a second pipe.

[0035] A heat recovery device 12 for heat exchange is provided between the first pipe and the return gas pipe.

[0036] In this embodiment, the heat recovery unit 12 is used to recover and utilize the waste heat generated during the operation of the medicine storage cabinet, thereby reducing heat loss.

[0037] The first pipeline is divided by the heat recovery unit 12 into a first front pipe section connected between the heat recovery unit 12 and the air outlet of the cabinet 1, and a first rear pipe section connected between the heat recovery unit 12 and the circulating fan 6. A bypass pipe 7 is connected to the first front pipe section, and a second three-way valve 8 connected to the bypass pipe 7 away from the first front pipe section is provided in the middle of the first rear pipe section.

[0038] In practical use:

[0039] 1. In cooling mode: The control unit controls the circuit along the positive direction to pass through the semiconductor cooling chip 2 and controls the first three-way valve to disconnect between the outlet of the cold end heat sink 3 and the inlet of the hot end heat sink 4. At this time, only the cold end heat sink 3 acts on the cabinet 1. At the same time, the control unit controls the second three-way valve 8 to connect the pipeline between the air outlet of the cabinet 1 and the circulating fan 6. The heat recovery unit 12 is not used. The control unit controls the circulating fan 6 to run. The gas in the cabinet 1 is drawn out from its air outlet, passes through the bypass pipe 7 and the circulating fan 6 in sequence, and then enters the cold end heat sink 3. The cold end of the semiconductor cooling chip 2 cools the gas in the cold end heat sink 3. The cooled gas is guided to the air inlet of the cabinet 1 through the return gas pipe to return to the cabinet 1, and the temperature inside the cabinet 1 is reduced to the preset temperature for use.

[0040] 2. In constant temperature dehumidification mode: The control unit controls the circuit along the positive direction through the semiconductor cooling chip 2 and controls the first three-way valve to connect the end of the return air pipe away from the cabinet 1, the outlet of the cold end radiator 3, and the inlet of the hot end radiator 4. Then, the opening of the first three-way valve between the return air pipe and the hot end radiator 4 is adjusted. At this time, the combination of the cold end radiator 3 and the hot end radiator 4 acts on the cabinet 1. It also controls the second three-way valve 8 to disconnect from the bypass pipe 7. The second three-way valve 8 connects between the first front pipe section and the first rear pipe section. The circulating fan 6 runs, and the gas in the cabinet 1 is drawn out from its outlet, and then sequentially... After passing through the heat recovery unit 12 and the circulating fan 6, the gas enters the cold end radiator 3. The cold end of the semiconductor cooling chip 2 cools the gas in the cold end radiator 3, and the moisture in the gas condenses to form condensate and is then separated, thus completing the dehumidification of the gas. Part of the dehumidified gas is introduced into the hot end radiator 4 through the first three-way valve. The hot end of the semiconductor cooling chip 2 heats the gas in the hot end radiator 4, and another part is introduced into the heat recovery unit 12 through the return gas pipe for heat exchange. The latter two parts of the gas mix at the rear end of the return gas pipe and then return to the cabinet 1 from the air inlet of the cabinet 1 to keep the temperature and humidity in the cabinet 1 constant.

[0041] 3. In heating mode: The control unit controls the circuit in the opposite direction to pass through the semiconductor cooling chip 2 and controls the first three-way valve to disconnect between the outlet of the cold end heat sink 3 and the inlet of the hot end heat sink 4. At this time, only the cold end heat sink 3 acts on the cabinet 1. At the same time, the control unit controls the second three-way valve 8 to connect the pipeline between the air outlet of the cabinet 1 and the circulating fan 6. The heat recovery unit 12 is not used. The control unit controls the circulating fan 6 to run. The gas in the cabinet 1 is drawn out from its air outlet, passes through the bypass pipe 7 and the circulating fan 6 in sequence, and then enters the cold end heat sink 3. The cold end of the semiconductor cooling chip 2 heats the gas in the cold end heat sink 3. The heated gas is guided through the return gas pipe to the air inlet of the cabinet 1 to return to the cabinet 1 and heat the temperature inside the cabinet 1 to the preset temperature for use.

[0042] Furthermore, external temperature and humidity sensors 9 connected to the control unit are installed at the air inlet of the cabinet 1, the inlet of the cold end radiator 3, the outlet of the hot end radiator 4, and the side of the return air pipe connected to the heat recovery unit 12. This facilitates the detection of the temperature and humidity of the gas at the corresponding locations, so as to adjust the temperature and humidity of the gas to the required temperature.

[0043] like Figure 4 As shown, according to another embodiment of the present invention, in a medicine storage cabinet, the bottom of the cold end radiator 3 is provided with a water receiving tray 10 and the bottom of the cold end radiator 3 has a condensate draining channel that is connected to the water receiving tray 10.

[0044] In this embodiment, the cold end radiator 3 includes a shell with an open bottom. The left and right ends of the shell have connection ports for connecting to corresponding pipes. Several heat sinks are arranged at intervals inside the shell. The gap between two adjacent heat sinks is used for gas flow to cool or heat, and also forms the condensate drain channel, so that the condensate generated after the gas condenses is introduced into the water receiving pan 10 and then discharged through the drain pipe connected to the water receiving pan 10.

[0045] like Figure 2 , Figure 3 as well as Figure 4 As shown, according to another embodiment of the present invention, the medicine storage cabinet includes a hot-end heat sink 4 comprising a hot-end heating air duct 401 and a hot-end cooling air duct 402. The hot-end heating air duct 401 is disposed on the hot end of the semiconductor cooling chip 2 and is connected between the return air pipe and the first three-way valve. The hot-end cooling air duct 402 and the semiconductor cooling chip 2 are distributed on different sides of the hot-end heating air duct 401, and a cooling fan 403 is disposed on the side of the hot-end cooling air duct 402 away from the hot-end heating air duct 401.

[0046] In this embodiment, the hot-end heating air duct 401 is disposed on the hot end of the semiconductor cooling chip 2 to allow gas to flow through for heating, the hot-end heat dissipation air duct 402 plays a role in dissipating heat from the hot-end heating air duct 401, and the heat dissipation fan 403 operates to improve the heat dissipation effect.

[0047] The hot end heat dissipation air duct 402 is formed by a number of heat dissipation fins arranged at intervals on the top of the hot end heating air duct 401.

[0048] like Figure 1 As shown, according to another embodiment of the present invention, the medicine storage cabinet includes a cabinet shell 101, the cabinet shell 101 having a cabinet door and a plurality of support mesh panels 102 arranged at intervals from bottom to top inside the shell.

[0049] In this embodiment, the support mesh plate 102 facilitates the support of medicines, and the mesh holes on the support mesh plate 102 allow gas to flow inside the cabinet shell 101, so that the temperature and humidity inside the cabinet shell 101 are evenly distributed; opening the cabinet door makes it easy to put medicines into or remove them from the cabinet shell 101.

[0050] The cabinet 101 is equipped with an internal temperature and humidity sensor connected to the control unit. The internal temperature and humidity sensor detects the temperature and humidity inside the cabinet 101 and works in conjunction with the external temperature and humidity sensor 9 to facilitate the adjustment of the temperature and humidity inside the cabinet 1 to the desired level.

[0051] Specifically, the cold end radiator 3, the hot end radiator 4, and the heat recovery unit 12 are all connected to the top of the cabinet 101. The air inlet and outlet of the cabinet 101 are connected to conduits extending to the bottom of the cabinet 101.

[0052] like Figure 4 As shown, according to another embodiment of the present invention, the medicine storage cabinet includes a control unit comprising a controller 11. The controller 11 is connected to a hot-end heat sink 4, a heat recovery unit 12, an external temperature and humidity sensor 9, an internal temperature and humidity sensor, a first three-way valve, a second three-way valve 8, a semiconductor cooling chip 2, and a circulating fan 6. The controller 11 can control the current flow direction of the semiconductor cooling chip 2 through an H-bridge structure composed of existing relays or MOSFETs. The controller 11 can be a microcontroller, which will not be described in detail here.

[0053] The following example will be used to illustrate this medicine storage cabinet.

[0054] Cooling mode:

[0055] For example, when the ambient temperature is 30℃ and the temperature and humidity sensor inside the cabinet detects a temperature of 12℃, it is necessary to...

[0056] When the temperature inside cabinet 1 is adjusted to 8℃, controller 11 controls the operation of semiconductor cooling chip 2 and circulating fan 6. The cold end of semiconductor cooling chip 2 generates cooling, which is introduced into cold end radiator 3, and the heat is introduced into hot end radiator 4. Controller 11 adjusts the second three-way valve 8 to open the bypass pipe 7, so that the gas bypasses the heat recovery unit 12 and is introduced into the circulating fan 6 through the bypass pipe 7. The circulating fan 6 sends the gas into the cold end radiator 3 to cool the gas. The first three-way valve is adjusted so that all the cooled gas is returned to cabinet 1 after being processed by the heat recovery unit 12, thereby reducing the temperature of cabinet 1. When the temperature difference between the temperature detected by the temperature and humidity sensor inside the cabinet and the set temperature is less than 2℃, the current output by controller 11 to semiconductor cooling chip 2 and the voltage of circulating fan 6 decrease linearly according to the temperature difference. Finally, the cooling input into cabinet 1 is balanced with the heat conducted into cabinet 1 from the external environment, thereby achieving the purpose of maintaining a constant low temperature inside cabinet 1.

[0057] Constant temperature dehumidification mode:

[0058] For example, when the temperature and humidity sensor inside the cabinet detects a temperature of 28°C and a relative humidity of 80%, and it is necessary to adjust the temperature inside cabinet 1 to 20°C and the relative humidity to 40%, the controller 11 controls the semiconductor cooling chip 2 and the circulating fan 6 to work at full load. The cold end of the semiconductor cooling chip 2 generates cooling, which is introduced into the cold end radiator 3, and the heat is introduced into the hot end radiator 4. The controller 11 controls the second three-way valve 8 to disconnect the bypass pipe 7 and allow the gas to pass through the heat recovery unit 12, and then enter the circulating fan 6. The circulating fan 6 sends the gas into the cold end radiator 3 to cool and dehumidify the gas. The condensate generated by the cold end radiator 3 flows into the water collection tray 10 and flows out through the pipes set in the water collection tray 10. The first three-way valve is adjusted so that all the cooled and dehumidified gas enters the heat recovery unit 12 for heat exchange and is then sent back to the cabinet. 1. When the temperature and humidity sensor inside the cabinet detects a temperature of 20°C, the controller 11 controls the first three-way valve to open in all three directions. Part of the cooled and dehumidified gas enters the hot-end heating air duct 401 to be heated, while another part of the gas enters the heat recovery unit 12 to exchange heat with the incoming air. After the latter two parts of gas are mixed, they are sent back into the cabinet 1 to maintain the temperature inside the cabinet 1 at a constant 20°C and reduce the relative humidity. Then, when the temperature and humidity sensor inside the cabinet detects a relative humidity greater than 40% and less than 50%, the controller 11 controls the current of the semiconductor cooling chip 2 and the voltage of the circulating fan 6 to decrease linearly according to the relative humidity difference. When the set target value is reached, the current of the semiconductor cooling chip 2 is reduced and the opening of the first three-way valve is adjusted to ensure that the temperature and humidity inside the cabinet 1 remain constant at the target value.

[0059] Heating mode:

[0060] For example, when the ambient temperature is 5℃, the temperature detected by the temperature and humidity sensor inside the cabinet is 12℃, and the required set temperature inside cabinet 1 is 20℃, the controller 11 controls the operation of the thermoelectric cooler 2 and the circulating fan 6. The thermoelectric cooler 2 is supplied with a reverse current, generating heat at its cold end, which is then transferred to the cold end radiator 3. The controller 11 adjusts the second three-way valve 8 to open the bypass pipe 7, allowing gas to bypass the heat recovery unit 12 and be introduced into the circulating fan 6 through the bypass pipe 7. The circulating fan 6 then sends the gas into the cold end radiator 3 to raise its temperature. The first three-way valve is adjusted so that all the heated gas is returned to cabinet 1 after being transferred to the heat recovery unit 12, thus raising the temperature of cabinet 1. When the temperature difference between the temperature detected by the temperature and humidity sensor inside the cabinet and the set temperature is less than 2℃, the current output by the controller 11 to the thermoelectric cooler 2 and the voltage output by the circulating fan 6 decrease linearly according to the temperature difference. Ultimately, the cooling energy input into cabinet 1 balances with the heat conducted into cabinet 1 from the external environment, thereby achieving a constant temperature inside cabinet 1.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A medicine storage cabinet, characterized by, The application relates to a cabinet, which comprises the following parts: a cabinet body; a semiconductor refrigerating sheet, the cold end of the semiconductor refrigerating sheet is provided with a cold end radiator matched with the cabinet body, and the hot end of the semiconductor refrigerating sheet is provided with a hot end radiator matched with the cabinet body; a control unit connected with the semiconductor refrigerating sheet and used for switching the current direction flowing through the semiconductor refrigerating sheet and controlling the gas drawn from the cabinet body to flow through the combination of the cold end radiator and the hot end radiator or flow back to the cabinet body after flowing through the cold end radiator.

2. The medicine storage cabinet according to claim 1, characterized in that, The inlet of the cold end radiator is communicated with the gas outlet of the cabinet body, the gas return pipeline is communicated with the gas inlet of the cabinet body, the outlet of the hot end radiator is communicated with the gas return pipeline, and the end of the gas return pipeline far from the gas inlet of the cabinet body, the outlet of the cold end radiator and the inlet of the hot end radiator are communicated through a first three-way valve, and the first three-way valve is controlled by the control unit to guide the path.

3. The medicine storage cabinet according to claim 2, characterized in that, A circulating fan is arranged between the inlet of the cold end radiator and the gas outlet of the cabinet body.

4. The medicine storage cabinet according to claim 3, characterized in that, The circulating fan is connected with the gas outlet of the cabinet body through a first pipeline, and the circulating fan is connected with the inlet of the cold end radiator through a second pipeline. A heat energy recovery device for heat exchange is arranged between the first pipeline and the gas return pipeline.

5. The medicine storage cabinet according to claim 4, wherein The first pipeline is divided into a first front pipeline section connected between the heat energy recovery device and the gas outlet of the cabinet body and a first rear pipeline section connected between the heat energy recovery device and the circulating fan through the heat energy recovery device, a bypass pipeline is connected to the first front pipeline section, and a second three-way valve connected with the bypass pipeline far from the first front pipeline section is arranged in the first rear pipeline section.

6. The medicine storage cabinet according to claim 5, wherein A cabinet external temperature and humidity sensor connected with the control unit is arranged on the gas inlet of the cabinet body, the inlet of the cold end radiator, the outlet of the hot end radiator and the side of the gas return pipeline connected with the heat energy recovery device.

7. A medicine storage cabinet according to any one of claims 1-6, characterized in that A water pan is arranged at the bottom of the cold end radiator, and the bottom of the cold end radiator is provided with a condensate discharge channel communicated with the water pan.

8. A medicine storage cabinet according to any one of claims 2-6, characterized in that The hot end radiator comprises: a hot end heating air duct arranged on the hot end of the semiconductor refrigerating sheet and communicated between the gas return pipeline and the first three-way valve; hot end heat dissipation air ducts arranged on different sides of the hot end heating air duct and provided with a heat dissipation fan on the side far from the hot end heating air duct.

9. The medicine storage cabinet according to any one of claims 1-6, characterized in that, The cabinet body comprises: a cabinet shell provided with a cabinet door and a plurality of support net plates arranged in the cabinet shell from bottom to top.

10. The medicine storage cabinet according to claim 9, characterized in that, A cabinet internal temperature and humidity sensor connected with the control unit is arranged in the cabinet shell.

Images