Storage device

Abstract

The invention relates to the technical field of refrigeration, in particular to storage equipment, and aims to solve the problems that an existing refrigerator is low in refrigeration efficiency and poor in uniformity. In order to achieve the purpose, the storage equipment comprises a shell and a heat pump type refrigeration device, a partition plate is arranged in the shell and divides the interior of the shell into a machine bin chamber and a storage chamber, an air inlet and an air return port are formed in the partition plate, and a first movable unpowered air door and a second movable unpowered air door are arranged at the air inlet and the air return port correspondingly; an evaporator and a draught fan of the heat pump type refrigerating device are installed in the machine bin chamber, and the draught fan is configured to drive airflow to force the first unpowered air door and the second unpowered air door to be opened during operation so that a refrigerating circulation air channel can be formed between the machine bin chamber and the storage chamber. Therefore, the fan is used for driving airflow to form a forced circulation air duct, the heat exchange efficiency is improved, the refrigeration efficiency is greatly improved, cold air uniformly flows in the whole storage chamber through the circulation air duct, and the temperature uniformity is improved.

Description

Technical Field

[0001] This invention relates to the field of refrigeration technology, and specifically provides a storage device. Background Technology

[0002] Currently, ultra-low temperature freezers generally use direct cooling technology. The typical working method is as follows: the evaporator pipes are directly wrapped around or attached to the outer wall of the freezer's inner liner. Cooling is achieved by the evaporator absorbing heat from the inner liner, and then the cooling energy is transferred to the interior space via the thermal conductivity of the inner liner material itself.

[0003] However, the aforementioned traditional solutions have significant drawbacks. First, the refrigeration process relies entirely on passive cooling through the inner liner, resulting in a long and inefficient heat exchange path, leading to a slow temperature drop inside the chamber. This results in prolonged temperature recovery after placing a large number of samples or frequent door openings. Second, the uneven transfer of cold energy from the inner liner wall to the center of the chamber easily creates significant temperature gradients across different areas, leading to poor temperature uniformity and making it difficult to meet the precise storage requirements for temperature-sensitive items (such as biological samples and reagents). Furthermore, existing direct-cooling ultra-low temperature freezers typically lack effective active dehumidification or drainage channels. When the user opens the door, moisture from the outside air enters the freezer and quickly condenses into frost on the inner liner surface and stored items. This frost buildup not only erodes valuable storage space and reduces the convenience of accessing items, but the thick frost layer also forms an additional insulation layer, further deteriorating refrigeration efficiency and temperature uniformity. Users must frequently perform time-consuming and laborious manual defrosting, affecting the continuous and stable operation of the equipment.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problems of low cooling efficiency and poor uniformity in existing refrigerators.

[0006] This invention provides a storage device, including a housing and a heat pump refrigeration unit. A partition is provided in the housing, dividing the interior of the housing into a machine compartment and a storage compartment. An air inlet and an air return outlet are provided on the partition. A movable first non-powered damper and a second non-powered damper are respectively provided at the air inlet and the air return outlet. The evaporator and a fan of the heat pump refrigeration unit are installed in the machine compartment. The fan is configured to drive airflow during operation to force the first and second non-powered dampers to open, thereby forming a refrigeration circulation duct between the machine compartment and the storage compartment.

[0007] In the preferred embodiment of the above-mentioned storage device, the machine compartment and the storage compartment are arranged vertically. The first non-powered air door includes a first door body that blocks the air inlet, a first rotating shaft disposed on the partition, and a counterweight. The first door body and the counterweight are respectively connected to both sides of the first rotating shaft and maintain initial balance so that the first door body blocks the air inlet. When the wind pressure generated by the fan during operation acts on the first door body, it can disrupt the initial balance and drive the first door body to rotate around the first rotating shaft in the direction of the storage compartment to open.

[0008] In the preferred embodiment of the above-mentioned storage device, the first non-powered air door includes a first door body that blocks the air inlet, a first rotating shaft for connecting the first door body and the partition, and an elastic reset member; the wind pressure generated when the fan is running can drive the first door body to rotate around the first rotating shaft to open in the direction of the storage chamber, overcoming the elastic force of the elastic reset member; when the fan stops running, the elastic reset member can drive the first door body to rotate in the opposite direction so that the first door body blocks the air inlet.

[0009] In the preferred embodiment of the above-mentioned storage device, the machine compartment and the storage compartment are arranged vertically. The second non-powered air door includes a second door body that blocks the return air inlet and a second rotating shaft for connecting the second door body and the partition. The second door body is configured to block the return air inlet under its own weight, and under the drive of the fan, the airflow in the storage compartment can generate wind pressure on the second door body to drive the second door body to rotate around the second rotating shaft in the direction of the machine compartment to open.

[0010] In a preferred embodiment of the above-mentioned storage device, the storage device further includes a drainage system, which includes an inner water tray disposed at the bottom of the evaporator, a water storage container disposed outside the housing, and a drainage assembly connecting the inner water tray and the water storage container.

[0011] In a preferred embodiment of the above-mentioned storage device, the drainage assembly includes a drain pipe and a water seal structure connected between the drain pipe and the water storage container. The water seal structure is configured to allow water from the inner water tray to flow unidirectionally into the water storage container and to prevent external gas from flowing back into the water storage container.

[0012] In the preferred embodiment of the above-mentioned storage device, the water seal structure includes a variable diameter pipe, wherein the diameter of the variable diameter pipe at the end near the water storage container is larger than the diameter at the end near the drain pipe, and a movable sealing element is provided at the variable diameter section of the variable diameter pipe; the sealing element is configured such that when water flows through, the sealing element is pressed down by the water flow to allow water to pass through, and when there is no water flow, the sealing element floats up and seals the variable diameter section to form a seal.

[0013] In the preferred embodiment of the above-mentioned storage device, the water storage container is an external water tray located below the storage chamber.

[0014] In the preferred embodiment of the above-mentioned storage device, the inner water tray and / or the drain pipe are provided with heating components to prevent water from freezing.

[0015] In the preferred embodiment of the above-mentioned storage device, the elastic reset member is a torsion spring sleeved on the first rotating shaft, or The elastic reset component is a tension spring or compression spring connected between the first door and the partition.

[0016] Those skilled in the art will understand that the technical solution of the present invention provides a storage device, including a housing and a heat pump refrigeration device. A partition is provided within the housing, dividing the interior of the housing into a cooling compartment and a storage compartment. An air inlet and an air return outlet are provided on the partition. A movable first non-powered damper and a second non-powered damper are respectively provided at the air inlet and the air return outlet. The evaporator and a fan of the heat pump refrigeration device are installed in the cooling compartment. The fan is configured to drive airflow during operation, forcing the first and second non-powered dampers to open, thereby forming a refrigeration circulation airflow channel between the cooling compartment and the storage compartment. By adopting the above technical solution, the present invention can solve the problems of low refrigeration efficiency and poor uniformity in existing refrigerators. Specifically, the present invention uses a fan to drive airflow to form a forced circulation airflow channel, allowing cold air to quickly and evenly enter the storage compartment, fully contact the items, and rapidly absorb heat, before quickly returning to the cooling compartment for cooling. This highly efficient heat exchange process significantly accelerates the cooling speed and greatly improves cooling efficiency. By setting up a first non-powered damper and a second non-powered damper, the heat impact and increased power consumption caused by motor operation are avoided, further improving the performance and energy efficiency of the equipment.

[0017] Furthermore, in this invention, the engine compartment and storage compartment are arranged vertically. The first non-powered damper includes a first door body that blocks the air inlet, a first rotating shaft mounted on a partition, and a counterweight. The first door body and the counterweight are respectively connected to both sides of the first rotating shaft and maintain initial balance, so that the first door body blocks the air inlet. When the fan operates, the wind pressure generated by it acts on the first door body, which can disrupt the initial balance and drive the first door body to rotate around the first rotating shaft towards the storage compartment to open. With this configuration, no additional power source is needed to control the damper's movement, reducing the number of components used, reducing structural complexity, avoiding the impact of heat generated by the operation of the electric damper on the temperature, and reducing the overall energy consumption of the equipment.

[0018] Furthermore, the first non-powered damper of the present invention includes a first door body that blocks the air inlet, a first rotating shaft for connecting the first door body and the partition, and an elastic reset member; the air pressure generated when the fan is running can drive the first door body to rotate around the first rotating shaft towards the storage compartment to open, overcoming the elastic force of the elastic reset member; when the fan stops running, the elastic reset member can drive the first door body to rotate in the opposite direction to block the air inlet. With this configuration, no additional motor is needed to drive the opening and closing of the first non-powered damper, avoiding the electrical energy consumed by the motor and the impact of heat generated on the temperature.

[0019] Furthermore, in this invention, the engine compartment and storage compartment are arranged vertically. The second non-powered damper includes a second door body that blocks the return air inlet and a second rotating shaft for connecting the second door body and the partition. The second door body is configured to block the return air inlet under its own weight, and under the drive of a fan, the airflow in the storage compartment can generate wind pressure on the second door body, thereby driving the second door body to rotate around the second rotating shaft towards the engine compartment to open. With this configuration, no additional power source is needed to drive its opening and closing; the action is achieved entirely by its own weight and the wind pressure generated by the fan. This avoids the electrical energy consumed by the operation of power devices such as motors and the impact of heat generated on the temperature. Attached Figure Description

[0020] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of the storage device of the present invention; Figure 2 This is a cross-sectional view of the storage device of the present invention; Figure 3 This is a schematic diagram of the structure of the first and second unpowered dampers of the present invention. Figure 4 This is a schematic diagram of the drainage system of the present invention; Figure 5 This is a cross-sectional view of the drainage system of the present invention.

[0021] List of reference numerals in the attached diagram: 1. Shell; 11. Partition; 111. Air inlet; 112. Air return outlet; 12. Cabin; 13. Storage compartment; 2. First non-powered damper; 21. First damper body; 22. First pivot; 23. Counterweight; 3. Second non-powered damper; 31. Second door body; 32. Second pivot; 4. Evaporator; 5. Fan; 6. Drainage system; 61. Internal water tray; 62. Water storage container; 63. Drainage components; 631. Drainage pipe; 632. Water seal structure; 6321. Reducing pipe; 6322. Sealing component. Detailed Implementation

[0022] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the invention and are not intended to limit the scope of protection of the invention. For example, although the following embodiments are described in conjunction with a refrigerator, the storage device provided by the present invention is equally applicable to other products that need to solve problems such as low cooling efficiency and poor uniformity.

[0023] It should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] Based on the problems of low cooling efficiency and poor uniformity in existing refrigerators pointed out in the background art, this invention provides a storage device that aims to effectively solve the problems of low cooling efficiency and poor uniformity in existing refrigerators by setting up a non-powered damper and circulating air.

[0025] like Figures 1 to 3 As shown, the present invention provides a storage device, including a housing 1 and a heat pump refrigeration device (not shown in the figure). A partition 11 is provided in the housing 1, which divides the interior of the housing 1 into a machine compartment 12 and a storage compartment 13. An air inlet 111 and an air return outlet 112 are provided on the partition 11. A first non-powered damper 2 and a second non-powered damper 3 are respectively provided at the air inlet 111 and the air return outlet 112. An evaporator 4 and a fan 5 of the heat pump refrigeration device are installed in the machine compartment 12. The fan 5 is configured to drive the airflow during operation to force the first non-powered damper 2 and the second non-powered damper 3 to open, so as to form a refrigeration circulation air duct between the machine compartment 12 and the storage compartment 13.

[0026] The storage device provided by this invention, when the fan 5 is started, a powerful airflow begins to flow. The force of the airflow overcomes the gravity or resistance of the first and second unpowered dampers 2 and 3, forcing them to open. Thus, the airflow smoothly enters the storage chamber 13 from the machine compartment 12 through the air inlet 111, where it fully exchanges heat with the stored items, absorbing the heat emitted by the items, and then returns to the machine compartment 12 through the return air inlet 112. The airflow returning to the machine compartment 12 is cooled again by the evaporator 4, and this cycle repeats, forming a refrigeration circulation air duct.

[0027] Traditional refrigerators may suffer from poor airflow circulation, resulting in slow cooling speeds. This invention, however, utilizes a fan 5 to drive airflow, creating a forced circulation duct. Cold air can quickly and evenly enter the storage compartment 13, making full contact with the items and rapidly absorbing heat before quickly returning to the cooling chamber 12 for further cooling. This highly efficient heat exchange process significantly accelerates the cooling speed and greatly improves cooling efficiency.

[0028] Furthermore, existing refrigerators often exhibit significant temperature differences in different locations within the storage compartment 13, resulting in poor cooling uniformity. The cooling circulation duct formed by this invention allows cold air to flow evenly throughout the entire storage compartment 13, preventing excessively high or low temperatures in localized areas. This ensures that the temperature in all locations within the storage compartment 13 remains at a relatively uniform level, providing a more stable and suitable storage environment for items and effectively improving the uniformity of cooling.

[0029] This invention employs a non-powered damper design, eliminating the need for an additional power source to control the opening and closing of the damper. If a motor were used to control the damper, the motor would generate heat during operation. This heat would dissipate into the storage device, interfering with the temperature within the storage compartment 13, reducing temperature control accuracy, and affecting the storage quality of the items. Simultaneously, motor operation consumes additional electrical energy, increasing the overall power consumption of the device. This invention, using a non-powered damper, fundamentally avoids the heat impact and increased power consumption problems caused by motor operation, further improving the performance and energy efficiency of the device.

[0030] Furthermore, the adoption of a non-powered damper design significantly simplifies the overall structure and reduces the number of parts compared to dampers controlled by a motor. This not only lowers manufacturing costs but also reduces the probability of equipment failure, improving reliability and stability, while also reducing subsequent maintenance costs.

[0031] like Figure 2 and Figure 3As shown, in the first preferred embodiment of the first non-powered air door 2, the machine compartment 12 and the storage compartment 13 are arranged vertically. The first non-powered air door 2 includes a first door body 21 that blocks the air inlet 111, a first rotating shaft 22 disposed on the partition 11, and a counterweight 23. The first door body 21 and the counterweight 23 are respectively connected to both sides of the first rotating shaft 22 and maintain initial balance so that the first door body 21 blocks the air inlet 111. When the wind pressure generated by the fan 5 during operation acts on the first door body 21, it can disrupt the initial balance and drive the first door body 21 to rotate around the first rotating shaft 22 towards the storage compartment 13 to open.

[0032] The first door 21 of this invention seals the air inlet 111. Its shape and size are adapted to the air inlet 111, and it can fit tightly against the edge of the air inlet 111, thus providing a good sealing effect. In the initial state, the first door 21 completely seals the air inlet 111, preventing the airflow between the engine compartment 12 and the storage compartment 13 from flowing freely, and ensuring a relatively stable cooling environment in the engine compartment 12.

[0033] The first pivot 22 is disposed on the partition 11 and serves as the fulcrum for the rotation of the first door 21. Exemplarily, the first pivot 22 of the present invention is made of alloy material, which has sufficient strength and stability to withstand various forces generated by the first door 21 during rotation, ensuring that the first door 21 can rotate smoothly and steadily around it.

[0034] The counterweight 23 and the first door 21 are respectively connected to both sides of the first rotating shaft 22. In the initial state, the counterweight 23 and the first door 21 maintain balance through reasonable weight distribution, enabling the first door 21 to stably block the air inlet 111. It should be noted that the weight and position of the counterweight 23 can be adjusted according to the weight of the first door 21 to achieve the best balance effect; however, this invention does not impose specific limitations on these adjustments.

[0035] When the fan 5 is running, it generates a certain amount of wind pressure. This wind pressure acts on the first door 21, generating a force on the first door 21 towards the storage chamber 13. Due to this force, the initial balance between the first door 21 and the counterweight 23 is broken. At this time, driven by the wind pressure, the first door 21 rotates around the first pivot 22 towards the storage chamber 13, and the air inlet 111 is opened, allowing airflow from the machine compartment 12 to enter the storage chamber 13 through the air inlet 111. When the fan 5 stops running, the wind pressure disappears, and under the gravity of the counterweight 23, the first door 21 rotates in the opposite direction around the first pivot 22, resealing the air inlet 111 and returning to the initial sealed state.

[0036] The first non-powered damper 2 adopts a combination structure of the first door body 21, the first rotating shaft 22 and the counterweight 23 to realize the automatic sealing of the damper in the initial state and the automatic opening when the fan 5 is running. It does not require an additional power source to control the action of the damper, reduces the use of parts, reduces the complexity of the structure, avoids the impact of heat generated by the operation of the electric damper on the temperature, and reduces the overall energy consumption of the equipment.

[0037] In a second preferred embodiment of the first non-powered air door 2, the first non-powered air door 2 includes a first door body 21 that blocks the air inlet 111, a first rotating shaft 22 for connecting the first door body 21 and the partition 11, and an elastic reset member (not shown in the figure); the wind pressure generated by the fan 5 during operation can drive the first door body 21 to overcome the elastic force of the elastic reset member and rotate around the first rotating shaft 22 towards the storage chamber 13 to open; when the fan 5 stops running, the elastic reset member can drive the first door body 21 to rotate in the opposite direction so that the first door body 21 blocks the air inlet 111.

[0038] In terms of the overall layout of this storage device, the server compartment 12 and the storage compartment 13 are rationally arranged according to actual design requirements. A common arrangement is vertical, as described above. Other layouts, such as side-by-side arrangement, can also be adopted depending on space and functional requirements. This diverse layout allows the device to adapt to different installation environments and usage scenarios, improving its versatility.

[0039] The first door 21 is tightly sealed at the air inlet 111, and its shape and size are precisely matched with the air inlet 111 to ensure good sealing performance. In the initial state, the first door 21 completely blocks the airflow through the air inlet 111, maintaining the relative independence between the engine compartment 12 and the storage compartment 13, preventing the cold energy in the engine compartment 12 from being lost to the storage compartment 13 for no reason or the external environment from interfering with the cooling environment in the engine compartment 12.

[0040] The first pivot 22 serves as the hub connecting the first door body 21 and the partition 11, acting as a support and rotation shaft. The first pivot 22 is firmly mounted on the partition 11, possessing sufficient strength and rigidity to withstand various stresses generated during the rotation of the first door body 21. This ensures that the first door body 21 can rotate smoothly and steadily around the partition without wobbling or jamming, thus guaranteeing the reliability of the damper's opening and closing actions.

[0041] The elastic reset component is connected between the first door 21 and the partition 11 or other suitable fixed parts. The elastic reset component can undergo elastic deformation within a certain range and store elastic potential energy. It should be noted that its elastic force needs to be adjusted to ensure that it can reliably drive the first door 21 to block the air inlet 111 when the fan 5 is not running, and also to allow the first door 21 to overcome the elastic force and open under the action of wind pressure when the fan 5 is running.

[0042] When the fan 5 starts running, it generates wind pressure of a specific direction and magnitude. This wind pressure acts on the first door 21, generating a force on the first door 21 towards the storage chamber 13. As the wind pressure gradually increases, when this force exceeds the elastic force of the elastic reset member, the first door 21 will overcome the resistance of the elastic reset member and rotate around the first rotating shaft 22 towards the storage chamber 13. The air inlet 111 is gradually opened, allowing airflow to enter the storage chamber 13 from the machine compartment 12 through the air inlet 111.

[0043] When the fan 5 stops running, the air pressure disappears, and the elastic potential energy stored in the elastic reset component due to previous stretching or compression begins to be released. The elastic reset component generates a force on the first door 21 opposite to the opening direction, driving the first door 21 to rotate in the opposite direction around the first pivot 22 until the first door 21 re-seals the air inlet 111, restoring the initial sealed state and preventing airflow between the machine compartment 12 and the storage compartment 13.

[0044] The first unpowered damper 2 adopts a combined structure of a first door body 21, a first rotating shaft 22, and an elastic reset component. Compared with some structures that require complex motor control systems to drive the damper, the number of parts is greatly reduced, and the structure is simpler. This not only reduces the manufacturing cost of the equipment, but also reduces the potential failure points caused by numerous parts, improving the reliability and stability of the equipment. No additional motor is needed to drive the opening and closing of the first unpowered damper 2, avoiding the electrical energy consumed by motor operation.

[0045] Preferably, the elastic reset component is a torsion spring sleeved on the first rotating shaft 22, or the elastic reset component is a tension spring or compression spring connected between the first door body 21 and the partition 11.

[0046] Preferably, such as Figure 2 and Figure 3 As shown, the engine compartment 12 and the storage compartment 13 are arranged vertically. The second non-powered air door 3 includes a second door body 31 that blocks the return air inlet 112 and a second rotating shaft 32 for connecting the second door body 31 and the partition 11. The second door body 31 is configured to block the return air inlet 112 under its own weight. Under the drive of the fan 5, the airflow in the storage compartment 13 can generate wind pressure on the second door body 31 to drive the second door body 31 to rotate around the second rotating shaft 32 towards the engine compartment 12 to open.

[0047] The second door 31 is tightly sealed at the return air vent 112, and its shape and size are precisely matched to the return air vent 112 to ensure good sealing performance. In the initial state, that is, when the fan 5 is not running, the second door 31 relies on its own gravity to tightly adhere to the edge of the return air vent 112, effectively preventing the airflow between the machine compartment 12 and the storage compartment 13 from naturally circulating through the return air vent 112, maintaining a stable cooling environment in the machine compartment 12, and reducing the unnecessary loss of cooling capacity.

[0048] The second pivot 32, as the connecting component between the second door body 31 and the partition 11, plays a crucial role in supporting and rotating the pivot. It is firmly installed on the partition 11 and has sufficient strength and rigidity to withstand various stresses generated by the second door body 31 during rotation, ensuring that the second door body 31 can rotate smoothly and steadily around it without shaking or jamming, thereby ensuring the reliability of the opening and closing action of the damper.

[0049] When the fan 5 is not running, the second door 31 is only subject to its own gravity. Since the direction of gravity is vertically downward, and the design of the second door 31 and the return air vent 112 allows gravity to stably block the return air vent 112, the airflow channel between the machine compartment 12 and the storage compartment 13 is blocked, maintaining their relatively independent environments.

[0050] When the fan 5 starts running, the airflow in the storage compartment 13 begins to flow under the suction force generated by the fan 5. The airflow generates a wind pressure on the second door 31 towards the refrigeration compartment 12. As the wind pressure gradually increases, when the torque generated by this wind pressure exceeds the stabilizing torque generated by the weight of the second door 31, the second door 31 will rotate around the second pivot 32 towards the refrigeration compartment 12, and the return air vent 112 will be gradually opened, allowing the airflow in the storage compartment 13 to enter the refrigeration compartment 12 through the return air vent 112 and participate in the refrigeration cycle.

[0051] The second non-powered damper 3 consists only of the second door body 31 and the second rotating shaft 32, with an extremely simple structure. Compared to damper structures that use electric valves or complex mechanical controls, the number of parts is significantly reduced, which not only lowers the manufacturing cost of the equipment but also reduces potential failure points caused by numerous parts, improving the overall reliability and stability of the equipment. It requires no additional power source to drive its opening and closing, relying entirely on its own gravity and the air pressure generated by the fan 5. This avoids the electrical energy consumed by motors and other power devices, greatly reducing the overall energy consumption of the equipment.

[0052] Preferably, such as Figure 1 and Figure 4As shown, the storage device also includes a drainage system 6, which includes an inner water tray 61 disposed at the bottom of the evaporator 4, a water storage container 62 disposed outside the housing 1, and a drainage assembly 63 connecting the inner water tray 61 and the water storage container 62.

[0053] An internal water tray 61 is located at the bottom of the evaporator 4. During the refrigeration process, the surface temperature of the evaporator 4 is lower than the dew point temperature of the surrounding air, causing water vapor in the air to condense onto the surface of the evaporator 4. The function of the internal water tray 61 is to collect this condensate dripping from the surface of the evaporator 4, preventing it from flowing freely and damaging other components inside the equipment. For example, the shape of the internal water tray 61 is designed according to the shape and size of the evaporator 4; it can be a shallow tray with a certain volume to hold a certain amount of condensate.

[0054] The water storage container 62 is disposed outside the shell 1. It should be noted that the water storage container 62 is typically made of corrosion-resistant and well-sealing materials, such as plastic, to ensure its long-term stable storage of condensate without leakage. Furthermore, the volume of the water storage container 62 can be rationally designed according to the equipment's usage scenario and the expected amount of condensate to meet the water storage needs for a certain period.

[0055] When the evaporator 4 is running, water vapor in the air condenses on its surface, forming condensate. This condensate drips into the inner water tray 61 located at the bottom of the evaporator 4. As the condensate accumulates in the inner water tray 61, when the water level reaches a certain height, the condensate flows through the drain assembly 63 to the water storage container 62 located outside the housing 1. When the condensate in the water storage container 62 reaches a certain amount, the user can empty it in a timely manner to ensure the continuous normal operation of the drainage system 6.

[0056] By incorporating an internal water tray 61, condensate dripping from the surface of the evaporator 4 can be collected promptly, preventing it from flowing freely inside the equipment. If condensate accumulates inside, it can lead to excessive humidity, promoting the growth of bacteria and mold, which not only affects the hygiene of the equipment but may also contaminate stored items. Furthermore, accumulated water can damage internal electrical components, causing short circuits and other malfunctions, thus affecting the normal operation of the equipment. The drainage system 6 effectively solves these problems, ensuring the dryness and cleanliness of the equipment's interior.

[0057] Preferably, the water storage container 62 in this invention is an external water tray located below the storage chamber 13.

[0058] Preferably, the drainage assembly 63 includes a drain pipe 631 and a water seal structure 632 connected between the drain pipe 631 and the water storage container 62. The water seal structure 632 is configured to allow water from the inner water tray 61 to flow unidirectionally into the water storage container 62 and to prevent external gas from flowing back into the water storage container 62.

[0059] If humid external air flows back into the equipment, it will increase the internal humidity. This can not only breed bacteria and mold, affecting the hygiene of the equipment, but also damage the internal electrical components and metal parts, reducing the equipment's lifespan. This invention effectively prevents the entry of humid external air by incorporating a water seal structure 632, helping to maintain a dry environment inside the equipment, protecting the various internal components, and extending the equipment's lifespan.

[0060] Furthermore, in some usage scenarios, the water storage container 62 may be placed in a relatively enclosed or odorous environment. Without the water seal structure 632, external odorous gases could easily enter the device through the drain pipe 631, affecting the freshness of the air inside and potentially contaminating the stored items. The water seal structure 632, through its unique design, prevents the backflow of external odorous gases, ensuring clean air inside the device and providing a good environment for the stored items.

[0061] Preferably, such as Figure 4 and Figure 5 As shown, the water seal structure 632 includes a reducing pipe 6321. The diameter of the reducing pipe 6321 at the end near the water storage container 62 is larger than the diameter at the end near the drain pipe 631. A movable sealing element 6322 is provided at the reducing pipe 6321. The sealing element 6322 is configured such that when water flows through, the sealing element 6322 is pressed down by the water flow to allow water to pass through. When there is no water flow, the sealing element 6322 floats up and seals the reducing pipe to form a seal.

[0062] The sealing element 6322 is located at the diameter change point of the reducing pipe 6321 and is the core component for the water seal structure 632 to achieve its function. It can move up and down within the reducing pipe 6321. It should be noted that the shape and size of the sealing element 6322 are adapted to the structure of the diameter change point to ensure effective sealing and opening of the diameter change point. The material of the sealing element 6322 can be a material with moderate density, certain elasticity and wear resistance, such as rubber or silicone, which can ensure its flexible movement under the action of water flow and provide a good sealing effect.

[0063] When condensate in the inner water tray 61 flows into the reducer pipe 6321 through the drain pipe 631, the water flow exerts downward pressure on the sealing member 6322. Since the sealing member 6322 is movable, it will be pressed down under the impact of the water flow, causing the reducer to open and allowing the condensate to flow smoothly into the water storage container 62 through the reducer pipe 6321.

[0064] When the condensate in the inner water pan 61 is drained and no water flows through the reducing pipe 6321, the sealing element 6322 is no longer under water pressure. At this time, the sealing element 6322 will float up under its own buoyancy, tightly sealing the reducing section and forming a seal. This seal effectively prevents external gases (such as odorous gases or humid air around the water storage container 62) from flowing back into the equipment through the reducing pipe 6321, maintaining the air quality and dry environment inside the equipment.

[0065] Preferably, the inner water tray 61 and the drain pipe 631 are equipped with heating components (not shown in the figure) to prevent water from freezing. The heating components effectively prevent water from freezing, ensuring that the drainage system 6 can still flow smoothly in low-temperature environments, thus improving the reliability and stability of the equipment.

[0066] Exemplarily, the heating component of the present invention is closely fitted or embedded in the bottom or side wall of the inner water tray 61, and can take the form of an electric heating wire, a heating film, or a heating tube. The electric heating wire is flexible and easy to arrange, and can be bent and installed according to the shape of the inner water tray 61; the heating film has the advantages of uniform heating and thinness, and does not occupy too much space in the inner water tray 61; the heating tube has the characteristics of high heating power and high thermal efficiency, and is suitable for applications requiring high heating speed. The present invention does not specifically limit the specific form or arrangement of the heating component on the inner water tray 61.

[0067] Exemplarily, the heating element on the drain pipe 631 of the present invention takes the form of a heating belt or a heating sleeve. The heating belt can be wrapped around the outer wall of the drain pipe 631, increasing its temperature through its own heat generation; the heating sleeve completely encloses the drain pipe 631, providing a more uniform heating effect. Both the heating belt and the heating sleeve are connected to a power source via wires and can be controlled in sections according to actual needs to achieve precise heating of different parts of the drain pipe 631. The present invention does not specifically limit the form or arrangement of the heating element on the drain pipe 631.

[0068] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A storage device, characterized in that, The device includes a housing (1) and a heat pump refrigeration unit. A partition (11) is provided in the housing (1), which divides the interior of the housing (1) into a machine compartment (12) and a storage compartment (13). An air inlet (111) and an air return outlet (112) are provided on the partition (11). A first non-powered damper (2) and a second non-powered damper (3) are respectively provided at the air inlet (111) and the air return outlet (112). The evaporator (4) and the fan (5) of the heat pump refrigeration unit are installed in the machine compartment (12). The fan (5) is configured to drive the airflow during operation to force the first non-powered damper (2) and the second non-powered damper (3) to open, so as to form a refrigeration circulation duct between the machine compartment (12) and the storage compartment (13).

2. The storage device according to claim 1, characterized in that, The machine compartment (12) and the storage compartment (13) are arranged vertically. The first non-powered air door (2) includes a first door body (21) that blocks the air inlet (111), a first rotating shaft (22) set on the partition (11), and a counterweight (23). The first door body (21) and the counterweight (23) are respectively connected to both sides of the first rotating shaft (22) and maintain initial balance so that the first door body (21) blocks the air inlet (111). When the wind pressure generated by the fan (5) during operation acts on the first door body (21), it can disrupt the initial balance and drive the first door body (21) to rotate around the first rotating shaft (22) towards the storage compartment (13) to open.

3. The storage device according to claim 1, characterized in that, The first non-powered damper (2) includes a first door body (21) that blocks the air inlet (111), a first rotating shaft (22) for connecting the first door body (21) and the partition (11), and an elastic reset member; the wind pressure generated by the fan (5) during operation can drive the first door body (21) to overcome the elastic force of the elastic reset member and rotate around the first rotating shaft (22) toward the storage room (13) to open; when the fan (5) stops running, the elastic reset member can drive the first door body (21) to rotate in the opposite direction so that the first door body (21) blocks the air inlet (111).

4. The storage device according to claim 1, characterized in that, The engine compartment (12) and the storage compartment (13) are arranged vertically. The second non-powered air door (3) includes a second door body (31) that blocks the return air inlet (112) and a second rotating shaft (32) for connecting the second door body (31) and the partition (11). The second door body (31) is configured to block the return air inlet (112) under its own weight. Under the drive of the fan (5), the airflow in the storage compartment (13) can generate wind pressure on the second door body (31) to drive the second door body (31) to rotate and open around the second rotating shaft (32) toward the engine compartment (12).

5. The storage device according to any one of claims 1 to 4, characterized in that, The storage device also includes a drainage system (6), which includes an inner water tray (61) disposed at the bottom of the evaporator (4), a water storage container (62) disposed outside the housing (1), and a drainage assembly (63) connecting the inner water tray (61) and the water storage container (62).

6. The storage device according to claim 5, characterized in that, The drainage assembly (63) includes a drain pipe (631) and a water seal structure (632) connected between the drain pipe (631) and the water storage container (62). The water seal structure (632) is configured to allow water from the inner water tray (61) to flow unidirectionally into the water storage container (62) and to prevent external gas from flowing back into the water storage container (62).

7. The storage device according to claim 6, characterized in that, The water seal structure (632) includes a variable diameter pipe (6321), the diameter of which is larger at the end near the water storage container (62) than at the end near the drain pipe (631), and a movable sealing element (6322) is provided at the variable diameter section of the variable diameter pipe (6321); the sealing element (6322) is configured such that when water flows through, the sealing element (6322) is pressed down by the water flow to allow water to pass through, and when there is no water flow, the sealing element (6322) floats up and seals the variable diameter section to form a seal.

8. The storage device according to claim 5, characterized in that, The water storage container (62) is an external water tray located below the storage room (13).

9. The storage device according to claim 6, characterized in that, The inner water tray (61) and / or the drain pipe (631) are provided with heating components to prevent water from freezing.

10. The storage device according to claim 3, characterized in that, The elastic reset component is a torsion spring sleeved on the first rotating shaft (22), or The elastic reset component is a tension spring or compression spring connected between the first door body (21) and the partition (11).

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