Temperature-controlled goods sales equipment

Abstract

The present invention provides a temperature-controlled goods sales device, which includes a frame body and an air conditioning device forming a storage space; the air outlet of the air conditioning device is communicated with at least one air duct opening of the storage space, and also includes at least one air duct opening adjustment plate that is movably matched with the frame body, so that when the position of the air duct opening adjustment plate relative to the frame body is adjusted, the air duct opening adjustment plate at least partially blocks the air duct opening. The temperature-controlled goods sales device can not only better control the temperature of the storage space, but also change the temperature of the storage space according to the stored goods and the surrounding environment, and has stronger adaptability.

Description

Technical Field

[0001] The present invention relates to cargo storage technology, and in particular to a temperature-controlled cargo sales device whose storage space temperature needs to be controlled. Background Art

[0002] Currently, temperature-controlled goods sales equipment such as freezers, vending machines, and goods display cabinets are usually equipped with air-conditioning devices to control or maintain the temperature of the storage space. Even if the air outlet of the air-conditioning device is connected to the storage space, the temperature of the storage space can be adjusted by the output wind, thereby increasing the storage time of goods and keeping the goods in a suitable sales state for a longer period of time.

[0003] In order to control the temperature of the storage space, air duct openings are usually set at corresponding positions of the storage space. The cold air (or air of a predetermined temperature) output by the air-conditioning device through the air outlet enters the cargo storage space through the air duct opening to control the ambient temperature of the storage space.

[0004] At present, in order to ensure that the temperature of the storage space is controllable, the distribution design of the air duct openings and the temperature of the cold air output by the air conditioner are generally used. The existing methods cannot adjust the cooling effect according to the different types of stored goods and the different environments around the goods storage equipment. Either the temperature of the storage space cannot be controlled, resulting in too high or too low temperature; or the air conditioner needs to be adjusted frequently, resulting in excessive power consumption; or the control process is cumbersome and the temperature control reliability is low.

[0005] How to further control the temperature of the cargo storage space more conveniently and reliably and improve adaptability while ensuring the temperature control of the storage space is a technical problem that technicians in this field need to solve. Summary of the invention

[0006] The purpose of the present invention is to provide a temperature-controlled goods sales device, which can not only better control the temperature of the storage space, but also change the temperature of the storage space according to the stored goods and the surrounding environment, and has stronger adaptability.

[0007] The temperature-controlled goods sales equipment provided by the present invention includes a frame forming a storage space and an air-conditioning device; the air outlet of the air-conditioning device is connected to at least one air duct opening of the storage space to output wind of a predetermined temperature, and also includes at least one air duct opening adjustment plate that is movably coordinated with the frame, so that when the position of the air duct opening adjustment plate relative to the frame is adjusted, the air duct opening adjustment plate at least partially blocks the air duct opening.

[0008] In this way, according to the needs of the stored goods and the surrounding environment, the position of the air duct adjustment plate relative to the frame can be changed to keep the air duct adjustment plate at a predetermined position or a predetermined normal initial position, and the air volume entering the storage space can be changed, so that the temperature of the storage space can be controlled within a predetermined range, so that the temperature-controlled goods sales equipment can be suitable for storing different stored goods and different temperature environments, thereby improving the adaptability of the temperature-controlled goods sales equipment. By changing the position of the air duct adjustment plate relative to the frame, the cooling effect is changed, and the structure is simple and the reliability is high; at the same time, by changing the air volume entering the storage space, there is no need to change the operating state of the air conditioning device, which can simplify the operation process and reduce the energy consumption of temperature control adjustment.

[0009] In a further technical solution, the temperature-controlled goods sales device further includes a driving mechanism mounted on the frame, and a driving end of the driving mechanism is connected to the air duct opening adjustment plate to drive the air duct opening adjustment plate to move relative to the frame. This can more accurately control the temperature of the storage space, which can ensure the quality of the stored goods and better reduce energy consumption.

[0010] In a further technical solution, the driving mechanism includes a gear mounted on a frame and a rack matched with the gear, and one end of the rack is connected to the air duct opening adjustment plate, that is, the driving mechanism includes a gear and rack mechanism.

[0011] Alternatively, it comprises a threaded rod mounted on a frame and a threaded sleeve matched with the threaded rod, wherein the threaded sleeve is mounted on the air duct opening adjustment plate, that is, the driving mechanism comprises a threaded transmission mechanism.

[0012] Alternatively, it comprises a cylinder, wherein the cylinder body of the cylinder is mounted on a frame body, and the protruding end of the rod body of the cylinder is connected to the air duct opening adjustment plate.

[0013] In a further technical solution, the driving mechanism includes a crank and a connecting rod, that is, the driving mechanism includes a crank rocker mechanism; the crank is rotatably mounted on the frame to form a first rotation center, and is rotatably connected to the connecting rod to form a second rotation center; the connecting rod is rotatably connected to the air duct opening adjustment plate to form a third rotation center.

[0014] In a further technical solution, the driving mechanism further includes an intermediate rod, which is rotatably connected to the connecting rod to form a fourth rotation center, and the fourth rotation center is located between the second rotation center and the third rotation center; the intermediate rod is also rotatably connected to another air duct opening adjustment plate to form a fifth rotation center. In this way, through the combination of the driving mechanism and the connecting rod mechanism, multiple air duct opening adjustment plates can be driven to move by one power component, simplifying the control structure.

[0015] In a further technical solution, the driving mechanism includes a cam mechanism formed by a cam and a matching follower rod, and the cam is mounted on the frame; the outer end of the follower rod is rotatably connected to the air duct opening adjustment plate.

[0016] In a further technical solution, the temperature-controlled goods sales equipment includes a plurality of air duct openings; the air duct opening adjustment plate blocks different numbers of air duct openings at different positions; or the temperature-controlled goods sales equipment includes a plurality of air duct openings of different sizes; the air duct opening adjustment plate blocks air duct openings of different sizes at different positions. By blocking air duct openings of different numbers or sizes, the air volume can be controlled more accurately, thereby more accurately controlling the temperature of the storage space.

[0017] The driving mechanism also includes a power component and an electric control device with an electric control end to control the movement of the driving mechanism through the power component. The electric control device can be set accordingly according to different power components. When the driving mechanism includes a gear rack structure, a threaded transmission mechanism, and a crank rocker mechanism, it can also include power components such as a motor and an electric control end for controlling the operation of the motor. The output shaft of the power component such as the motor can be connected to the rotating actuators such as gears, threaded rods, cranks, etc. in the driving mechanism to output rotational motion, and the corresponding driving mechanism converts the rotational motion into linear motion to drive the air duct opening adjustment plate to move. When the driving mechanism includes a cylinder, an electric control valve with an electric control end can be set to control the extension or retraction of the cylinder.

[0018] In a further technical solution, the temperature-controlled goods sales equipment also includes a controller and at least one temperature sensor for detecting the temperature of a predetermined position of the storage space; the temperature sensor is connected to the signal input end of the controller; the output end of the controller is connected to the electric control end of the drive mechanism. In this way, the controller can determine the temperature of the predetermined position of the storage space according to the temperature signal taken by the temperature sensor, and then automatically control the action of the drive mechanism through the drive mechanism according to the predetermined strategy, adjust the position of the air duct opening adjustment plate, and then achieve the purpose of automatically adjusting the air volume of the corresponding air duct opening. In this way, the temperature of the storage space can be controlled, and the timeliness of temperature control can be improved.

[0019] In a further technical solution, the storage space includes at least two storage areas, and at least one temperature sensor and at least one adjustment system are arranged corresponding to the storage areas, and the adjustment system includes at least one driving mechanism and the air duct opening adjustment plate driven by the driving mechanism; that is, temperature sensors and adjustment systems are arranged corresponding to different storage areas, so that different storage areas can be controlled separately through the controller, so that different storage areas can be kept within the corresponding temperature range, which provides a prerequisite for accurately controlling the temperature at different positions of the storage space, and also provides conditions for energy saving and consumption reduction.

[0020] In a further technical solution, the control strategy of the controller includes: according to the detection signal of the temperature sensor, when the temperature difference between different storage areas is greater than a predetermined value, sending an adjustment signal to the electric control end of the drive mechanism corresponding to the predetermined storage area, controlling the drive mechanism to change the position of the air duct opening adjustment plate relative to the frame, so that the air duct opening adjustment plate blocks the air duct opening flow opening to increase or decrease. In this way, the controller can control the temperature of the storage area with high or low temperature, so as to keep the entire storage space within the predetermined temperature range, providing a prerequisite for accurately controlling the temperature of different positions in the storage space, and also providing conditions for energy saving and consumption reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the temperature control principle of a vending machine;

[0022] Figure 2 yes Figure 1 The rear view structural diagram of the air duct plate (101) of the vending machine shown in FIG. only illustrates the situation of one air duct opening adjustment plate (120);

[0023] Figure 3 The structure of an embodiment in which the driving mechanism includes a threaded transmission mechanism is illustrated;

[0024] Figure 4 The structure of an embodiment in which the driving mechanism includes a cylinder (133) is illustrated;

[0025] Figure 5 The structure of an embodiment in which the driving mechanism includes a connecting rod mechanism is illustrated;

[0026] Figure 6 The structure of an embodiment in which the driving mechanism includes a cam mechanism is illustrated. DETAILED DESCRIPTION

[0027] In this section, a specific implementation method provided by the present invention is described by taking an automatic vending machine as an example. Of course, the technical solution provided by the present invention is not limited to automatic vending machines, but can also be used in other temperature-controlled goods sales equipment such as freezers and goods display cabinets.

[0028] The following describes the embodiments of the present invention in conjunction with the accompanying drawings. In this document, the meanings of the directional words such as "upper", "back", "front", and "front" used are mainly determined with reference to the use status of the vending machine.

[0029] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the temperature control principle of a vending machine; Figure 2 yes Figure 1The rear view structure diagram of the air duct plate 101 of the vending machine is shown in the figure, which only illustrates the situation of an air duct opening adjustment plate 120. The frame 100 of the vending machine forms a storage space, and the storage space is provided with 5 cargo storage racks arranged up and down. The rear wall of the frame 100 forming the storage space is the air duct plate 101, and a plurality of air duct openings 110 are arranged on the air duct plate 101. In this embodiment, the air duct plate 101 has a total of four rows of air duct openings 110 arranged up and down, and each row of air duct openings 110 is basically located in the middle of two cargo storage racks, and there are 7 air duct openings in each row.

[0030] The vending machine is also provided with an air conditioning device; the air conditioning device may be an existing air conditioning system, which may include a compressor, a condenser and an evaporator (only the evaporator 210 is shown schematically in the figure), and connected in an existing manner. In this embodiment, the evaporator 210 is located in the bottom area of ​​the storage space, and the fan of the evaporator 210 moves the cooled air upward near the back of the air duct plate 101, and enters the air duct port 110 and the storage space through an appropriate guide mechanism, and then sinks to the front side of the storage space, and then returns to the evaporator 210 for cooling, forming an air circulation path.

[0031] Please refer to Figure 2 The vending machine further includes an air duct opening adjustment plate 120, which is located behind the air duct plate 101 of the frame 100 and slides with the air duct plate 101 in the up-down direction. As shown in the figure, the air duct plate 101 forms a plurality of card edges that define the air duct opening adjustment plate 120, forming a slideway that defines the air duct opening adjustment plate 120. A corresponding plurality of flow holes are arranged on the air duct opening adjustment plate 120, and when the air duct opening adjustment plate 120 slides relative to the air duct plate 101 of the frame 100, the relative positions of the corresponding number of flow holes and the air duct opening 110 also change; when the two are exactly opposite to each other (the air duct opening 110 is not blocked), the corresponding air duct opening 110 is opened to the maximum, and the maximum amount of cold air can be sent to the storage space in front of the air duct plate 101 through the air duct opening 110; when the two are partially opposite to each other (the air duct opening 110 is partially blocked), the corresponding air duct opening 110 is in a half-open state, and an appropriate amount of cold air can be sent to the storage space in front of the air duct plate 101 through the air duct opening 110; when the two are staggered (the air duct opening 110 is completely blocked), the corresponding air duct opening 110 is in a closed state, and the cold air cannot reach the storage space in front of the air duct plate 101 through the air duct opening 110.

[0032] It can be understood that the air duct opening adjustment plate 120 and the air duct opening 110 can be set in other corresponding forms, so that when the position of the air duct opening adjustment plate 120 relative to the frame 100 is adjusted, the air duct opening adjustment plate 120 at least partially blocks the air duct opening 110. For example, when the temperature-controlled goods sales equipment includes a plurality of air duct openings 110, the air duct opening adjustment plate 120 can be at different positions to block different numbers of air duct openings 110. Alternatively, when the temperature-controlled goods sales equipment includes a plurality of air duct openings 110 of different sizes, the air duct opening adjustment plate 120 can be at different positions to block air duct openings 110 of different sizes. By blocking air duct openings 110 of different numbers or sizes, the air volume can be controlled more accurately, thereby more accurately controlling the temperature of the storage space.

[0033] It can be understood that the air duct adjustment plate 120 and the frame 100 are not limited to sliding fit, but can also be rotational fit or other movable fit, so that they can move relative to the frame 100, thereby changing the relative position of the two, so as to change the number of covered air duct openings 110 or the size of the flow area, and control the air volume entering the storage space.

[0034] In this way, according to the stored goods, the surrounding environment or other needs, the air volume entering the storage space can be changed by changing the position of the air duct adjustment plate 120 relative to the frame 100, so that the storage space can maintain the corresponding temperature, so that the temperature-controlled goods sales equipment can be suitable for storing different stored goods and different temperature environments, thereby improving the adaptability of the temperature-controlled goods sales equipment. For example, when the stored goods are ice cream or other goods that need to be kept at a low temperature, the location climate temperature is high, the heat dissipation is fast, and the ambient temperature is high (or during the day or in summer), the position of the air duct adjustment plate 120 relative to the frame 100 can be changed so that the air duct adjustment plate 120 blocks a smaller part of the air duct 110, allowing a larger amount of cold air to enter the storage space. On the contrary, when the stored goods are mineral water, instant noodles or other goods that need to be kept at a low temperature, the climate temperature is low, the heat loss is slow, and the ambient temperature is low (such as at night or in winter), the position of the air duct adjustment plate 120 relative to the frame 100 can be changed so that the air duct adjustment plate 120 blocks a larger part of the air duct 110, allowing a smaller amount of cold air to enter the storage space.

[0035] It can be understood that by changing the position of the air duct adjustment plate 120 relative to the frame 100, the cooling effect is changed, and the vending machine also has the characteristics of simple structure and high reliability. At the same time, by changing the air volume entering the storage space, there is no need to change the operating state of the air-conditioning device, which can simplify the operation process and reduce the energy consumption of temperature control.

[0036] In order to more accurately control the temperature of the storage space, the quality of the stored goods can be guaranteed and energy consumption can be reduced. The vending machine may further include a driving mechanism 130 mounted on the frame 100, and a driving end of the driving mechanism 130 is connected to the air duct adjustment plate 120 to drive the air duct adjustment plate 120 to move relative to the frame 100. Figure 2 As shown, in this embodiment, the driving mechanism 130 includes a gear 131a installed on the frame 100 and a rack 131b matched with the gear 131a, and one end of the rack 131b is connected to the air duct opening adjustment plate 120, that is, the driving mechanism 130 includes a gear rack mechanism. As shown in the figure, by rotating the gear 131a, the rack 131b can be driven to move up and down, thereby driving the air duct opening adjustment plate 120 to move relative to the air duct plate 101 of the frame 100 (in Figure 2 For reference, the air duct opening adjustment plate 120 can be moved in the up and down direction relative to the air duct plate 101 of the frame 100) to change the flow state of the corresponding air duct opening 110. Of course, the rotating gear 131a can be adjusted by manual rotation or by setting a corresponding motor to achieve automatic and precise adjustment; the motor can drive the gear 131a to rotate, and in order to facilitate automatic control, an electric control terminal can also be set to control the start, stop and rotation direction of the motor.

[0037] Of course, the driving mechanism 130 may also be other existing structures, such as Figure 3 In the embodiment of the drive mechanism including the threaded transmission mechanism shown, the drive mechanism 130 can be installed on the frame 100, including a threaded rod 132a and a threaded sleeve 132b matched with the threaded rod 132a, and the threaded sleeve 132b is installed on the air duct opening adjustment plate 120, i.e., a threaded transmission mechanism. By rotating the threaded rod 132a, the threaded sleeve 132b can be driven to move up and down, thereby driving the air duct opening adjustment plate 120 to move relative to the air duct plate 101 of the frame 100, thereby changing the flow state of the corresponding air duct opening 110. Of course, the rotating threaded rod 132a can be adjusted by manual rotation, or by setting a corresponding motor for rotation adjustment, so as to realize automation and precision of adjustment. The output shaft of the motor can be connected to the threaded rod 132a, and an electric control terminal for controlling the start, stop and rotation direction of the motor can be set.

[0038] like Figure 4The driving mechanism 130 shown includes an embodiment of a cylinder 133. The cylinder body of the cylinder 133 of the driving mechanism 130 is mounted on the frame 100, and the extended end of the rod body of the cylinder 133 is connected to the air duct opening adjustment plate 120; through pneumatic power, the rod body of the cylinder 133 can be extended or retracted, thereby driving the air duct opening adjustment plate 120 to move relative to the air duct plate 101 of the frame 100, and changing the flow state of the corresponding air duct opening 110. It can be understood that the control of pneumatic power can achieve precise control of the extension, retraction and telescopic length of the cylinder 133 through an air pump or an electric control valve with an electric control end.

[0039] The driving mechanism 130 can also be implemented by an appropriate connecting rod mechanism. Figure 5 The driving mechanism 130 shown includes a schematic diagram of an embodiment of a connecting rod mechanism. The driving mechanism 130 includes a crank 134a and a connecting rod 134b, that is, the two form a crank rocker mechanism; the crank 134a is rotatably mounted on the frame 100 to form a first rotation center A (the center line is shown in the figure, indicating the rotation center line, the same below), and is rotatably connected to the connecting rod 134b to form a second rotation center B; the connecting rod 134b is rotatably connected to an air duct opening adjustment plate 120a to form a third rotation center C. The crank 134a rotates around the first rotation center A, thereby driving the connecting rod 134b to move, so that the air duct opening adjustment plate 120a moves in the left and right directions, thereby achieving the purpose of changing the flow state of the corresponding air duct opening 110.

[0040] Of course, the driving mechanism 130 may also include a motor, and the output shaft of the motor is coaxial with the first rotation center A, so as to drive the crank 134a to rotate around the first rotation center A, drive the connecting rod 134b, and achieve the purpose of changing the flow state of the corresponding air duct opening 110. As shown in the figure, in this embodiment, the driving mechanism 130 also includes an intermediate rod 134c, which is rotatably connected to the connecting rod 134b to form a fourth rotation center D, and the fourth rotation center D is located between the second rotation center B and the third rotation center C; the intermediate rod 134c is also rotatably connected to the other air duct opening adjustment plate 120b to form a fifth rotation center E. In this way, when the motor drives the crank 134a to rotate, the air duct opening adjustment plates 120a and 120b can be driven to move at the same time, thereby achieving the purpose of changing the flow state of the corresponding air duct opening 110.

[0041] By utilizing the above-mentioned connecting rod mechanism and appropriately setting the position of the rotation center, when the crank 134a is rotated to different angles, the air duct adjustment plates 120a and 120b are in different positions, thereby more accurately adjusting the flow state of the corresponding air duct opening 110 and improving the accuracy of temperature control of the corresponding storage space.

[0042] like Figure 6The driving mechanism shown includes an embodiment of a cam mechanism. The cam mechanism 135 is formed by a cam and a matching follower rod, and the cam is mounted on the frame 100; the outer end of the follower rod is rotatably connected to the air duct opening adjustment plate 120. In this embodiment, the inner end of the follower rod is kept in contact with the outer periphery of the cam by a spring action. It can be understood by those skilled in the art that a predetermined shaped and closed slide groove can also be set in the cam, and the slide groove can be used to extend or retract the follower rod. It can be understood that the specific structure of the cam mechanism 135 is not limited to the structure shown in the figure, and can also be other disc cam structures, or a moving cam structure or a cylindrical cam structure, etc.

[0043] For the above-mentioned driving mechanisms 130, corresponding electronic control devices can be provided. The electronic control devices are provided with control signal access terminals, i.e., electronic control terminals, so as to control the motor outputting rotational power or the cylinder outputting linear power by inputting electronic control signals, thereby providing convenience for automatic control.

[0044] In a further technical solution, the vending machine may further include a controller and at least one temperature sensor for detecting the temperature of the predetermined position of the storage space; the temperature sensor is connected to the signal input end of the controller; the output end of the controller is connected to the electric control end of the drive mechanism 130. In this way, the controller can determine the temperature of the predetermined position of the storage space according to the temperature signal taken by the temperature sensor, and then automatically control the action of the drive mechanism 130 according to the predetermined strategy, adjust the position of the air duct opening adjustment plate 120, and then achieve the purpose of automatically adjusting the air volume of the corresponding air duct opening 110. In this way, the temperature of the storage space can be controlled, providing a premise for reducing energy consumption and improving the timeliness of temperature control.

[0045] The specific control strategy of the controller can be selected according to actual needs. For example, after the detected temperature exceeds the predetermined range, the position of the air duct opening regulating plate 120 can be adjusted to reduce or increase the air volume entering through the air duct opening 110; for example, when the temperature is higher than 7.2 degrees, the air volume is increased; when the temperature is lower than 2.2 degrees, the air volume is reduced. It is also possible to adjust the position of the air duct opening regulating plate 120 to increase the air volume entering through the air duct opening 110 when the detected temperature enters the predetermined range (lower than 3.8 degrees). It can also be automatically adjusted according to the time period, for example, a larger flow rate is maintained from 10:00 to 16:00, and a smaller flow rate is maintained from 23:00 to 06:00.

[0046] It can also be adjusted according to the temperature difference at different locations. Figure 1The storage space of the vending machine is divided into three storage areas S1, S2, and S3. A temperature sensor and a regulating system are set corresponding to the storage areas S1 and S2. The regulating system includes a driving mechanism 130 and the air duct adjustment plate 120 driven by the driving mechanism 130. The temperature sensor is also set corresponding to the storage area S3. The temperature sensors are all connected to the signal input end of the controller, and the output end of the controller is connected to the electric control end of the driving mechanism 130 corresponding to the storage areas S1 and S2. In this way, the controller can control the storage areas S1 and S2 separately, so that different storage areas can maintain the corresponding temperature range, which provides the premise for accurately controlling the temperature of different positions in the storage space, and also provides conditions for energy saving and consumption reduction. It is also possible to detect whether the temperature difference in different storage areas is greater than a predetermined value based on the temperature sensor detection signal; when the temperature difference is greater than the predetermined value (such as 4 degrees), an adjustment signal is sent to the electric control end of the drive mechanism 130 corresponding to the storage areas S1 and S2 to control the drive mechanism 130 to change the position of the air duct opening adjustment plate 120 relative to the frame 100, so that the air duct opening adjustment plate 120 blocks the air duct opening 110 flow opening to increase or decrease. The controller controls the temperature of storage areas with different high or low temperatures, thereby keeping the temperature of the entire storage space within a predetermined range, providing a prerequisite for accurately controlling the temperature of different positions in the storage space, and also providing conditions for energy saving and consumption reduction. In this embodiment, the storage area S3 is not provided with a regulating system, and the temperature of the storage area can be used as a basis for judgment. When the temperature difference between the storage area S1 and the storage area S3 is greater than 4 degrees, the air volume entering the storage area S1 is adjusted; similarly, when the temperature difference between the storage area S2 and the storage area S3 is greater than 4 degrees, the air volume entering the storage area S2 is adjusted; in this way, the temperature difference of the entire storage space can be kept within a smaller range, such as within a 4-degree range.

[0047] The embodiments provided by the present invention are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention, and the description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A temperature-controlled goods sales device, comprising a frame (100) forming a storage space and an air conditioning device; the air outlet of the air conditioning device is in communication with at least one air duct opening (110) of the storage space, characterized in that: It also comprises at least one air duct opening adjustment plate (120) movably matched with the frame (100), so that when the position of the air duct opening adjustment plate (120) relative to the frame (100) is adjusted, the air duct opening adjustment plate (120) at least partially covers the air duct opening (110); It also includes a driving mechanism (130) mounted on the frame (100), wherein a driving end of the driving mechanism is connected to the air duct opening adjustment plate (120) to drive the air duct opening adjustment plate (120) to move relative to the frame (100); The driving mechanism (130) comprises a crank (134a) and a connecting rod (134b); the crank (134a) is rotatably mounted on the frame (100) to form a first rotation center (A), and is rotatably connected to the connecting rod (134b) to form a second rotation center (B); the connecting rod (134b) is rotatably connected to the air duct opening adjustment plate (120) to form a third rotation center (C); the driving mechanism (130) further comprises an intermediate rod (134c), the intermediate rod (134c) is rotatably connected to the connecting rod (134b) to form a fourth rotation center (D), and the fourth rotation center (D) is located between the second rotation center (B) and the third rotation center (C); the intermediate rod (134c) is simultaneously rotatably connected to another air duct opening adjustment plate (120) to form a fifth rotation center (E).

2. The temperature-controlled goods sales equipment according to claim 1, characterized in that: It comprises a plurality of air duct openings (110); the air duct opening adjustment plate (120) is located at different positions to block different numbers of air duct openings (110); Alternatively, it comprises a plurality of air duct openings (110) of different sizes; the air duct opening adjustment plates (120) are located at different positions to shield air duct openings (110) of different sizes.

3. The temperature-controlled goods sales equipment according to claim 1 or 2, characterized in that: It also includes a controller and at least one temperature sensor for detecting the temperature of a predetermined position of the storage space; the temperature sensor is connected to a signal input end of the controller; and the output end of the controller is connected to an electrical control end of the drive mechanism (130) to control the drive mechanism (130).

4. The temperature-controlled goods sales equipment according to claim 3, characterized in that: The storage space comprises at least two storage areas (S1, S2), at least one temperature sensor and at least one adjustment system are arranged corresponding to the storage areas, and the adjustment system comprises at least one driving mechanism (130) and the air duct opening adjustment plate (120) driven by the driving mechanism (130).

5. The temperature-controlled goods sales equipment according to claim 4, characterized in that: The control strategy of the controller comprises: according to the detection signal of the temperature sensor, when the temperature difference between different storage areas is greater than a predetermined value, sending an adjustment signal to the electric control end of the drive mechanism (130) corresponding to the predetermined storage area (S1, S2), controlling the drive mechanism (130) to change the position of the air duct opening adjustment plate (120) relative to the frame (100), so that the flow opening of the air duct opening (110) blocked by the air duct opening adjustment plate (120) increases or decreases.

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