Low-temperature fluctuation ice cream cabinet with self-adaptive air curtain

Abstract

The invention relates to the technical field of refrigeration equipment, and discloses a low-temperature fluctuation ice cream cabinet with a self-adaptive air curtain, which comprises an air source for providing air flow, a cooling coil arranged on an objective table, a plurality of air nozzles and a plurality of trigger switch devices for controlling on-off of an air delivery pipe, one end of the cooling coil pipe is communicated with the air supply pipe, and the other end of the cooling coil pipe is communicated with an air delivery pipe; the multiple air nozzles are arranged on the transverse frame or the longitudinal frame at intervals in the push-pull direction parallel to the sliding door, and the air spraying directions of the air nozzles are opposite. The trigger switch devices are in one-to-one correspondence with the air nozzles; when the sliding door is opened, the switch device is triggered to conduct the air delivery pipe, air flow provided by the air source is sprayed out through the air nozzle after being sequentially supplied to the air delivery pipe, the cooling coil and the air delivery pipe, an air curtain is formed in the opening area of the sliding door, and the effects of reducing temperature fluctuation of the display area and blocking external pollution are achieved. When the sliding door is closed, the switch device is triggered to block the air delivery pipe, and the air nozzle stops spraying air.

Description

Technical Field

[0001] The present invention belongs to the technical field of refrigeration equipment, and particularly relates to an ice cream cabinet with an adaptive air curtain and low temperature fluctuation. Background Art

[0002] An ice cream cabinet is used for the display and sale of foods such as ice cream. It includes a base and a display area arranged on the base. The lower part of the display area is a food storage area, the front of which is an arc-shaped glass, and the two side surfaces thereof are side glass plates with the same shape fixedly installed, which can facilitate consumers to observe the displayed foods such as ice cream from multiple angles; a frame is provided at the rear thereof and double doors are installed, which can be pushed and pulled open to take and place foods.

[0003] Ice cream and the like need to be stored at a low temperature, and the temperature in the cabinet is generally lower than the external environmental temperature. Therefore, the temperature difference between the inside and outside of the display area is very large. At the same time, due to the need for sales, it is necessary to open the door irregularly to take and place ice cream products. Therefore, ice cream cabinets mostly have the following problems: In hot and humid weather, the temperature difference between the inside and outside of the display area is likely to cause condensation on its outer surface, thus affecting the display effect; when opening the door to take and place ice cream products, the external high-temperature air enters the display area, causing fluctuations in the temperature and humidity in the display area and affecting the quality stability of the placed ice cream products.

[0004] In the related art, CN104997342A discloses a new type of refrigerated display cabinet, which includes a display area. A food storage area, an air outlet and a return air outlet are arranged in the display area. An air outlet plate is arranged at the air outlet, and a wind guiding device is arranged at the return air outlet. The air outlet plate is arranged to be inclined downward. Cold air enters the display area along the direction of the air outlet plate from the air outlet, and is guided by the wind guiding device and discharged from the return air outlet to form a closed air curtain circulating in the food storage area; thus, the temperature difference between other parts of the display cabinet and the environmental temperature is not large, blocking the heat exchange between it and the environment, and solving the condensation problem to a certain extent. However, it does not solve the problem of temperature fluctuation in the display area caused by opening and closing the door. At the same time, the circulating closed air curtain in the display area is easy to dry out the moisture of the products, and the quality of the ice cream products may decline to varying degrees as the storage time prolongs.

[0005] Therefore, developing an ice cream cabinet that has little impact on ice cream products and can weaken the temperature fluctuation caused by opening and closing the door is a problem to be solved in this field. Summary of the Invention

[0006] The purpose of the present invention is to solve the problem of temperature fluctuation in the display area of the ice cream cabinet caused by opening and closing the door.

[0007] To achieve the above purpose, the specific technical solutions provided by the present invention are as follows:

[0008] A low-temperature fluctuation ice cream cabinet with an adaptive air curtain, comprising a display area and a loading platform arranged in the display area for placing products; a frame with a pair of horizontal frames and a pair of vertical frames is provided behind the display area, and a sliding door is installed on the frame; further comprising:

[0009] An air source for providing air flow, and the air source is connected with an air supply pipe;

[0010] A cooling coil arranged on the loading platform, one end of the cooling coil is connected with the air supply pipe, and the other end is connected with an air delivery pipe;

[0011] A plurality of air nozzles connected with the air delivery pipe, and the plurality of air nozzles are arranged on the horizontal frame or the vertical frame at intervals along the sliding direction of the sliding door, and the jet directions of the air nozzles on the upper and lower horizontal frames or the left and right vertical frames are arranged oppositely;

[0012] And a plurality of trigger switch devices for controlling the on-off of the air delivery pipe, and the trigger switch devices are arranged in one-to-one correspondence with the air nozzles; when the sliding door is opened, the trigger switch device conducts the air delivery pipe, and the air flow provided by the air source, after passing through the air supply pipe, the cooling coil and the air delivery pipe in sequence, is ejected from the air nozzle to form an air curtain in the area where the sliding door is opened; when the sliding door is closed, the trigger switch device blocks the air delivery pipe, and the air nozzle stops jetting.

[0013] By adopting the above technical solutions, when the sliding door is opened, the trigger switch device conducts the air delivery pipe, and the air flow provided by the air source, after passing through the air supply pipe, the cooling coil and the air delivery pipe in sequence, is ejected from the air nozzle to form an opposing air curtain in the area where the sliding door is opened, which can play a blocking role between the display area and the external space. On the one hand, it weakens the influence of external high-temperature air on the temperature of the display area and reduces the temperature fluctuation of the display area. On the other hand, it can reduce the entry of pollutants in the external air into the display area and reduce the possibility of polluting products such as ice cream in the display area. At the same time, compared with the related technology of circulating and closing the air curtain in the display area, the air curtain of the present invention is only formed after the door is opened and only in the opened area of the door, and the problem of moisture drying of ice cream products caused by gas flow in the low-temperature environment is inhibited to a certain extent, and the quality of the stored ice cream products is less affected.

[0014] Further, the trigger switch device includes an air valve and a trigger switch that can be triggered by the movement of the sliding door.

[0015] Further, the trigger switch is a reflected light change trigger switch, a distance change trigger switch, a capacitance change trigger switch, an infrared light change trigger switch or a laser beam change trigger switch. These several trigger switches are suitable for detecting various moving objects and can conduct or block the air flow supply of the air delivery pipe with the movement of the sliding door. In addition, an air valve integrated with the trigger switch function is also applicable to the present invention.

[0016] Further, the cooling coil is wound around the outer wall of the loading table. The temperature in the display area is low. By means of the cooling coil, the flow time of the air flow in the low-temperature display area can be increased. Finally, the formed jet is a low-temperature air curtain, and the effect of reducing the temperature fluctuation in the display area is better.

[0017] Further, the jet nozzles on the upper and lower horizontal side frames or the jet nozzles on the left and right vertical side frames are distributed in pairs, which is beneficial to reducing the dead zone of the air curtain, and the effects of reducing temperature fluctuation and isolating external pollution are better.

[0018] Further, the paired jet nozzles are arranged opposite to each other, or are staggered in the length direction of the horizontal side frame / vertical side frame, which is beneficial to reducing the dead zone of the air curtain, and the effects of reducing temperature fluctuation and isolating external pollution are better.

[0019] Further, the jet direction of the jet nozzle is parallel to the sliding door, or is inclined with respect to the sliding door, which is more beneficial to reducing the entry of external air into the display area, and the effects of reducing temperature fluctuation and isolating external pollution are better. Preferably, the jet direction is inclined towards the outside of the display area, which is more beneficial to reducing the introduction of external pollutants when the door is opened.

[0020] Further, the jet direction of the jet nozzle installed on at least one side vertical side frame or horizontal side frame is inclined with respect to the sliding door, and the included angle between the jet direction and the sliding door is ≤5°. When the cabinet size is large (the distance between the side frames is large), an excessive jet inclination angle of the jet nozzle may cause the air flow in the central area of the frame to be weak, which is not conducive to the exertion of the effects of reducing temperature fluctuation and isolating external pollution. Therefore, it is best to control the included angle between the jet direction and the sliding door to be ≤5°.

[0021] Further, the jet direction of the jet nozzle can be adjusted, and the inclination angle of the jet nozzle can be adjusted as needed, with better adaptability.

[0022] Further, the jet nozzle has a flat opening, and the jet coverage is wider, which is beneficial to reducing the jet dead zone. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram (one) of the low-temperature fluctuation ice cream cabinet with an adaptive air curtain in the embodiment of the present invention;

[0024] Figure 2 is Figure 1 the enlarged view of part A in;

[0025] Figure 3 It is a schematic structural diagram (two) of the low-temperature fluctuation ice cream cabinet with an adaptive air curtain in the embodiment of the present invention;

[0026] Figure 4A It is a schematic diagram A of the jet nozzle arrangement mode of the low-temperature fluctuation ice cream cabinet with an adaptive air curtain in the embodiment of the present invention;

[0027] Figure 4B Schematic diagram B of the jet nozzle arrangement of the low-temperature fluctuation ice cream cabinet with an adaptive air curtain in the embodiment of the present invention;

[0028] Figure 5 Schematic diagram of the relative position relationship between the jet nozzle and the sliding door in the embodiment of the present invention;

[0029] Figure 6 Schematic diagram of the structure of the jet nozzle and its accessory structure in the embodiment of the present invention;

[0030] Figure 7A Schematic diagram (I) of the installation method of the flat-mouth jet nozzle in the embodiment of the present invention;

[0031] Figure 7B Schematic diagram (II) of the installation method of the flat-mouth jet nozzle in the embodiment of the present invention;

[0032] Figure 8 Schematic diagram of the installation method of the position-adjustable jet nozzle in the embodiment of the present invention.

[0033] Explanation of reference numerals:

[0034] 1. Base; 2. Display area; 21. Loading platform; 22. Frame; 221. Horizontal frame; 222. Vertical frame; 223. Sliding door; 224. Long strip-shaped installation groove; 23. Arc-shaped glass plate; 24. Side glass plate; 3. Air source; 31. Air supply pipe; 4. Cooling coil; 41. Gas transmission pipe; 411. Hard pipe section; 4111. Movable part; 4112. Limiting part; 4113. Compression spring; 412. Flexible pipe section; 5. Mounting seat; 51. Air valve; 52. Trigger switch; 53. Jet nozzle; 531. Air nozzle opening. Detailed implementation manners

[0035] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will further elaborate on the present application in conjunction with the accompanying drawings.

[0036] Embodiment 1

[0037] A low-temperature fluctuation ice cream cabinet with an adaptive air curtain, referring to Figure 1 , which includes a base 1 and a display area 2 arranged on the base 1. The lower part of the display area 2 is a food storage area, provided with a loading platform 21 having a number of concave portions for placing ice cream products; in front of it is an arc-shaped glass plate 23, and on both sides are side glass plates 24 with the same shape fixedly installed, which can facilitate consumers to observe the displayed ice cream products from multiple angles; behind it is provided with a frame 22 and a double-opening sliding door 223 is installed, and the ice cream can be taken and placed by pushing and pulling the sliding door open.

[0038] Referring toFigure 1 , the frame 22 is rectangular, including a pair of horizontal side frames 221 and a pair of vertical side frames 222. In this embodiment, the sliding door 223 is a double-opening horizontal sliding glass door. When it is necessary to take and place ice cream products, any one of the glass doors can be pushed and pulled along the length direction of the horizontal side frame 221. In other embodiments, a glass door that can be pushed and pulled longitudinally to open can also be provided at the frame 22.

[0039] Refer to Figure 1 , Figure 2 and Figure 3 , to solve the problem of temperature fluctuation in the display area 2 caused by opening the door to take and place products and to prevent external pollutants from entering the display area 2 to a certain extent, in this embodiment, a number of air nozzles 53 are provided on a pair of horizontal side frames 221 or vertical side frames 222 of the frame 22. In this embodiment, the air nozzles 53 are arranged at equal intervals along the length direction of the horizontal side frame 221, and the air nozzles 53 are all located outside the sliding door 223. The air nozzles 53 on the upper horizontal side frame 221 and the lower horizontal side frame 221 are arranged in pairs, and the jet direction of the air nozzles 53 is parallel to the sliding door 223.

[0040] Refer to Figure 3 , an air source 3 is arranged inside the base 1 (cabinet body) of the ice cream cabinet to generate air flow. Specifically, common air sources 3 such as an air compressor, a blower, and a vacuum pump can be selected. In this embodiment, an air compressor is selected as the air source 3. The air source 3 is connected to an air supply pipe 31, and the air supply pipe 31 is connected to a cooling coil 4; the cooling coil 4 is wound around the outer wall of the concave part of the loading platform 21 to increase the air flow channel length as much as possible and reduce the air flow temperature. The other end of the cooling coil 4 is connected to an air delivery pipe 41, and the end of the air delivery pipe 41 is connected to the air nozzle 53. Specifically, pipelines such as the air supply pipe 31 and the air delivery pipe 41 can be arranged along the hollow inner cavities of the base 1 and the frame 22. The air delivery pipe 41 is divided into two paths, one path is used to supply air to the air nozzles 53 arranged on the upper horizontal side frame 221, and the other path is used to supply air to the air nozzles 53 arranged on the lower horizontal side frame 221. Independent branches are branched from the end of the air delivery pipe 41 to be connected to each air nozzle 53.

[0041] Refer to Figure 1 , Figure 2 and Figure Figure 3, a mounting seat 5 is provided on the frame 22. The mounting seat 5 is in the shape of a circular plate and is fixedly connected to the frame 22 by a plurality of bolts. In other embodiments, other fixed connection methods can also be used. A trigger switch device for controlling the on-off of the gas pipeline 41 is provided on the mounting seat 5. In this embodiment, the trigger switch device includes a gas valve 51 and a trigger switch 52 provided on the gas valve 51. The jet nozzle 53 is communicated with the gas valve 51. The trigger switch 52 faces the sliding door 223 and can be a reflected light change trigger switch, a distance change trigger switch, a capacitance change trigger switch, an infrared light change trigger switch or a laser beam change trigger switch. In this embodiment, the distance change trigger switch 52 is specifically selected. When the sliding door 223 blocks the trigger switch 52, the gas valve 51 is in a closed state; when the sliding door 223 is pushed and opened, the corresponding trigger switch 52 is opened, the gas valve 51 is opened, and the jet nozzle 53 is communicated with the gas pipeline 41. The airflow generated by the gas source 3 is ejected from the jet nozzle 53 to form a low-temperature air curtain in the door-opening area of the frame 22. The air curtain does not prevent the taking and placing of ice cream products and can block the influence of external high-temperature air on the temperature of the display area 2, thereby minimizing the temperature fluctuation of the display area 2; at the same time, the air curtain has the function of blocking external pollutants from entering the display area 2, which is beneficial to maintaining the quality of ice cream products in the display area 2. In this embodiment, the gas source 3 can be set to be linked with the trigger switch device. When any trigger switch device corresponding to the jet nozzle 53 is in an open state, the gas source 3 starts to work and outputs airflow. This kind of linkage method is known or easily thought of by those skilled in the art based on conventional technical knowledge and will not be elaborated here.

[0042] Referring to Figure 4A and Figure 4B , the jet nozzles 53 on the upper horizontal frame 221 and the lower horizontal frame 221 are distributed in pairs. They can be arranged facing each other or staggered by a certain distance in the length direction of the horizontal frame 221. In this way, a uniform and stable air curtain can be formed, reducing the jet dead angle and giving full play to the functions of reducing temperature fluctuation and isolating external pollutants. In this embodiment, the jet nozzles 53 adopt the Figure 4B staggered layout shown. In other embodiments, multiple rows of jet nozzles 53 arranged in parallel or staggered can also be provided on each horizontal frame 221. As the sliding door 223 is opened, the corresponding jet nozzles 53 automatically jet or close, so that an air curtain adaptable to the opening size of the sliding door 223 can be formed.

[0043] Embodiment 2

[0044] Embodiment 2 is based on Embodiment 1, and the difference from Embodiment 1 is only that: referring to Figure 5 , the jet direction of the jet nozzle 53 is inclined with respect to the sliding door 223, inclined toward the outside of the display area 2 and the inclination angle (α) ≤ 5°. The jet nozzles 53 arranged in an inclined manner have a better effect of blocking external high-temperature air and pollutants from entering the display area 2.

[0045] Example 3

[0046] Example 3 is based on Example 2, and the difference from Example 2 is only that: in Example 2, the air jet nozzle 53 has a circular air port. Refer to Figure 6 , in Example 3, the air jet nozzle 53 has a flat air port, and the ejected air flow can cover a larger range, which is beneficial to reducing dead angles, and has a better effect of reducing temperature fluctuations and isolating external pollution. Refer to Figure 7A and Figure 7B , the air nozzle opening 531 can be inclined in the same direction or staggered and inclined in different directions to further reduce the dead angle of air jet. In this embodiment, the staggered and inclined setting method shown in Figure 7B is adopted.

[0047] Example 4

[0048] Example 4 is based on Example 3, and the difference from Example 3 is only that:

[0049] Refer to Figure 8 , in this embodiment, the air jet nozzle 53 is an air jet nozzle 53 with an adjustable inclination direction, and the jet direction can be adjusted as needed.

[0050] Refer to Figure 8 , the installation position of the mounting seat 5 on the horizontal frame 221 is adjustable. Specifically, a long strip-shaped installation groove 224 communicating with the inner cavity is opened along the length direction on the horizontal frame 221, and the mounting seat 5 abuts against the horizontal frame 221 instead of being connected by bolts; the air delivery pipe 41 includes a hose section 412 and a hard pipe section 411, wherein one end of the hard pipe section 411 is communicated with the air jet nozzle 53 and the other end is inserted into the long strip-shaped installation groove 224; an annular movable member 4111 is sleeved on the hard pipe section 411, a ring-shaped limiting member 4112 is fixedly arranged at one end far away from the mounting seat 5, and a compression spring 4113 is sleeved on the hard pipe section 411 and located between the movable member 4111 and the limiting member 4112; the hose section 412 is communicated with the end of the hard pipe section 411 and has a certain margin to adapt to the adjustment of the position of the air jet nozzle 53. In the normal state, under the pushing action of the compression spring 4113, the movable member 4111 cooperates with the mounting seat 5 to fix the position of the air jet nozzle 53. When the position of the air jet nozzle 53 needs to be adjusted, the mounting seat 5 is pulled to make the movable member 4111 push the compression spring 4113, and after moving the air jet nozzle 53 along the long strip-shaped installation groove 224 to a suitable position, the mounting seat 5 is released. This installation method can flexibly increase the number of air jet nozzles 53 and adjust the distribution density of the air jet nozzles 53 according to actual needs.

[0051] The above are all the preferred embodiments of this application. The protection scope of this application is not limited hereby. Therefore, all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.

Claims

1. A low-temperature fluctuation ice cream cabinet with an adaptive air curtain, comprising a display area (2) and a loading platform (21) arranged in the display area (2) for placing products; a frame (22) with a pair of horizontal side frames (221) and a pair of vertical side frames (222) is provided behind the display area (2), and a sliding door (223) is installed on the frame (22), characterized in that, It further includes: An air source (3) for providing an air flow, and an air supply pipe (31) is connected to the air source (3); A cooling coil pipe (4) arranged on the loading platform (21), one end of the cooling coil pipe (4) is connected to the air supply pipe (31), and the other end is connected to an air delivery pipe (41); A plurality of air jet nozzles (53) connected to the air delivery pipe (41), and the plurality of air jet nozzles (53) are arranged at intervals along the pushing and pulling direction of the sliding door (223) on the horizontal side frame (221) or the vertical side frame (222), and the jetting directions of the air jet nozzles (53) on the upper and lower horizontal side frames (221) or the left and right vertical side frames (222) are arranged oppositely; And a plurality of trigger switch devices for controlling the on-off of the air delivery pipe (41), and the trigger switch devices are arranged in one-to-one correspondence with the air jet nozzles (53); when the sliding door (223) is opened, the trigger switch device conducts the air delivery pipe (41), and the air flow provided by the air source (3), after passing through the air supply pipe (31), the cooling coil pipe (4) and the air delivery pipe (41) in sequence, is ejected from the air jet nozzles (53) to form an air curtain in the opening area of the sliding door (223); when the sliding door (223) is closed, the trigger switch device blocks the air delivery pipe (41), and the air jet nozzles (53) stop jetting.

2. The low-temperature fluctuation ice cream cabinet with an adaptive air curtain according to claim 1, characterized in that: The trigger switch device includes an air valve (51) and a trigger switch (52) that can be triggered by the movement of the sliding door (223).

3. The low-temperature fluctuation ice cream cabinet with an adaptive air curtain according to claim 2, wherein: The trigger switch (52) is a reflected light change trigger switch, a distance change trigger switch, a capacitance change trigger switch, an infrared light change trigger switch or a laser beam change trigger switch.

4. A low-temperature fluctuation ice cream cabinet with an adaptive air curtain according to claim 1, characterized in that: The cooling coil pipe (4) is wound around the outside of the loading platform (21).

5. The low-temperature fluctuation ice cream cabinet with an adaptive air curtain according to claim 1, wherein: The air jet nozzles (53) on the upper and lower horizontal side frames (221) or the left and right vertical side frames (222) are distributed in pairs.

6. A low-temperature fluctuation ice cream cabinet with an adaptive air curtain according to claim 5, characterized in that: The paired air jet nozzles (53) are arranged oppositely, or are staggered in the length direction of the horizontal side frame (221) / vertical side frame (222).

7. A low-temperature fluctuation ice cream cabinet with an adaptive air curtain according to claim 5, characterized in that: The jetting direction of the air jet nozzle (53) is parallel to the pushing direction of the door, or is inclined with respect to the sliding door (223).

8. A low-temperature fluctuation ice cream cabinet with an adaptive air curtain according to claim 7, characterized in that: The jetting direction of the air jet nozzles (53) installed on at least one side vertical side frame (222) or horizontal side frame (221) is inclined with respect to the sliding door (223), and the included angle between the jetting direction and the sliding door (223) is ≤5°.

9. A low-temperature fluctuation ice cream cabinet with an adaptive air curtain according to claim 7, characterized in that: The jetting direction of the air jet nozzle (53) can be adjusted.

10. A low-temperature fluctuation ice cream cabinet with an adaptive air curtain according to claim 5, characterized in that: The air jet nozzle (53) has a flat opening.

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