A three-glass two-chamber glass door with self-cleaning function for a vertical refrigerated display cabinet

Abstract

The utility model relates to the technical field of freezer glass doors, and in particular to a three-glass two-cavity glass door body with a self-cleaning function for a vertical freezer display cabinet, comprising a door frame, an inner wall of the door frame being provided with a glass door body, the glass door body comprising a middle layer of glass, an outer layer of glass and an inner layer of glass being provided at the top and bottom of the middle layer of glass respectively, a first chamber being formed between the middle layer of glass and the outer layer of glass, a second chamber being formed between the middle layer of glass and the inner layer of glass, and a cleaning device being provided at one end of the door frame. In the utility model, by using a three-glass two-cavity hollow glass design, an effective heat insulation barrier is formed in the hollow air layer, which effectively reduces the transfer of heat, and ultra-low emissivity LOW‑E coated glass is used to significantly reduce the heat transfer coefficient of the glass, thereby reducing the condensation problem caused by the temperature difference between the inside and the outside, and a heating film is provided on the outside of the glass door to increase the temperature of the inner surface of the glass to prevent condensation.

Description

Technical Field

[0001] The utility model relates to the technical field of freezer glass doors, in particular to a three-glass two-cavity glass door body with a self-cleaning function for a vertical freezer display cabinet. Background Art

[0002] With the widespread use of frozen display cabinets in the retail and catering industries, the performance requirements for their door materials are becoming increasingly higher. Especially in subtropical and tropical regions, high temperature and high humidity environmental conditions pose severe challenges to the thermal insulation performance and condensation performance of frozen display cabinets.

[0003] The existing horizontal ice cream display cabinet sliding glass door is mainly made of 4mm single-layer LOW-E coated glass. The thermal insulation effect of the glass door is usually evaluated by the square resistance of the LOW-E film. The better LOW-E film square resistance is usually in the range of (6-8)Ω, and the corresponding emissivity E is about 0.089 and the thermal conductivity K is 3.43.

[0004] Although this type of glass door has good thermal insulation performance under normal environmental conditions, its performance is not good enough in the high temperature and high humidity environment of subtropical and tropical regions. Especially under the conditions of 35℃ ambient temperature and 75% humidity, the condensation phenomenon of this type of glass door is serious, which not only affects the display effect of the goods, but also may have a potential impact on the quality and safety of the goods. Utility Model Content

[0005] The utility model aims to provide a three-glass two-chamber glass door body with a self-cleaning function for a vertical refrigerated display cabinet, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A three-glass two-chamber glass door body with a self-cleaning function for a vertical refrigerated display cabinet comprises a door frame, an inner wall of the door frame is provided with a glass door body, the glass door body comprises a middle layer of glass, the top and bottom of the middle layer of glass are respectively provided with an outer layer of glass and an inner layer of glass, a first chamber is formed between the middle layer of glass and the outer layer of glass, a second chamber is formed between the middle layer of glass and the inner layer of glass, a cleaning device is provided at one end of the door frame, the cleaning device comprises a stepping motor, a main sprocket is fixedly connected to the output end of the stepping motor, a chain is provided on the outer side of the main sprocket, a secondary sprocket is provided at one end of the inner wall of the chain, a scraper is respectively provided on the outer side of the top and bottom of the chain, and one side of the two scrapers is respectively in contact with the outer layer of glass and the inner layer of glass.

[0008] Preferably, an elastic sealing member is provided on the inner wall of the door frame, and a plurality of peristaltic pumps are provided inside the door frame, wherein the peristaltic pump comprises a peristaltic chamber and a servo motor, wherein the output end of the servo motor is fixedly connected with a rotating shaft, an extrusion block is provided on the outer side of the top end of the rotating shaft, and a hose is provided on the inner wall of the peristaltic chamber, and the outer side of the extrusion block is transitionally matched with the inner wall of the peristaltic chamber.

[0009] Preferably, a heating film for heating the middle glass is arranged on the outer side of the middle glass, and a temperature sensor is arranged inside the middle glass.

[0010] Preferably, an air suction hole is opened on one side of the door frame, and one end of the hose is located in the inner cavity of the air suction hole.

[0011] Preferably, the middle layer glass, outer layer glass and inner layer glass are all made of LOW-E glass with ultra-low reflectivity.

[0012] Preferably, the middle layer glass, outer layer glass and inner layer glass are all made of glass material with ultra-low emissivity E=0.035 and thermal conductivity K=3.24.

[0013] Preferably, an air pressure sensor connected to the servo motor is provided inside the elastic sealing component, and the air pressure sensor is used to detect the air pressure inside the elastic sealing component.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. In the present invention, by using a three-glass two-cavity hollow glass design, the hollow air layer forms an effective heat insulation barrier, effectively reducing the transfer of heat, and using ultra-low emissivity LOW-E coated glass to significantly reduce the heat transfer coefficient of the glass, thereby reducing the condensation problem caused by the temperature difference between the inside and the outside, and a heating film is arranged on the outside of the glass door to increase the temperature of the inner surface of the glass to be higher than the dew point temperature of the indoor air, thereby preventing condensation;

[0016] 2. In the utility model, the sealing frame is inflated by a peristaltic pump, which effectively enhances the sealing between the glass and the door frame. This design can not only ensure a good sealing effect during the initial installation, but also quickly fill the gap by inflation when the door frame is slightly deformed or damaged during long-term use, maintain lasting sealing performance, effectively avoid the problem of increased air humidity in the hollow layer due to poor sealing, ensure the dryness and stability of the air in the hollow layer, and further reduce the occurrence of condensation;

[0017] 3. In the utility model, by means of the scraper design on both sides of the glass door, water droplets can be quickly removed when condensation occurs on the glass, thereby restoring the cleanliness of the glass and keeping the glass door tidy. The generation of condensation can be further reduced, while ensuring the display effect of the frozen display cabinet. There is no need to manually wipe off the condensation beads, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is an exploded schematic diagram of the overall structure of the utility model;

[0020] Figure 3 For this utility model Figure 2 Exploded diagram of the overall structure of the middle glass door body;

[0021] Figure 4 For this utility model Figure 2 A magnified explosion diagram of area A in the middle;

[0022] Figure 5 For this utility model Figure 2 The overall structural diagram of the cleaning device;

[0023] In the figure: 1. door frame; 11. elastic seal; 12. air intake hole; 2. glass door body; 21. middle glass; 22. outer glass; 23. inner glass; 24. heating film; 25. temperature sensor; 3. cleaning device; 31. stepper motor; 32. main sprocket; 33. chain; 34. secondary sprocket; 35. scraper; 4. peristaltic pump; 41. peristaltic chamber; 42. servo motor; 43. rotating shaft; 44. hose; 45. extrusion block. DETAILED DESCRIPTION

[0024] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0025] See also Figure 1-5 , the utility model provides a technical solution:

[0026] A three-glass two-chamber glass door body with a self-cleaning function for a vertical refrigerated display cabinet comprises a door frame 1, an inner wall of the door frame 1 is provided with a glass door body 2, the glass door body 2 comprises a middle glass 21, an outer glass 22 and an inner glass 23 are respectively provided at the top and bottom of the middle glass 21, a first chamber is formed between the middle glass 21 and the outer glass 22, and a second chamber is formed between the middle glass 21 and the inner glass 23, a cleaning device 3 is provided at one end of the door frame 1, the cleaning device 3 comprises a stepping motor 31, an output end of the stepping motor 31 is fixedly connected to a main sprocket 32, a chain 33 is provided on the outer side of the main sprocket 32, a secondary sprocket 34 is provided at one end of the inner wall of the chain 33, a scraper 35 is respectively provided at the outer side of the top and bottom of the chain 33, and one side of the two scrapers 35 is in contact with the outer glass 22 and the inner glass 23 respectively.

[0027] In this embodiment, please refer to Figure 2 , Figure 4 An elastic sealing member 11 is provided on the inner wall of the door frame 1, and a plurality of peristaltic pumps 4 are provided inside the door frame 1. The peristaltic pump 4 includes a peristaltic bin 41 and a servo motor 42. A rotating shaft 43 is fixedly connected to the output end of the servo motor 42. An extrusion block 45 is provided on the outer side of the top end of the rotating shaft 43. A hose 44 is provided on the inner wall of the peristaltic bin 41. The outer side of the extrusion block 45 is transitionally matched with the inner wall of the peristaltic bin 41. In this embodiment, the rotating shaft 43 is controlled to rotate by controlling the servo motor 42, so that one side of the extrusion block 45 continuously squeezes one side of the hose 44, so that the hose 44 continuously deforms and then returns to its original state, so that one end of the hose 44 generates positive pressure to discharge air, and the other end generates negative pressure to inhale air.

[0028] In this embodiment, please refer to Figure 3 A heating film 24 for heating the middle glass 21 is arranged on the outer side of the middle glass 21, and a temperature sensor 25 is arranged inside the middle glass 21. In this embodiment, the temperature of the glass door body 2 is detected in real time by the temperature sensor 25. When the temperature is too low, the middle glass 21 can be heated by the heating film 24, so that the heat is diffused to the whole glass door body 2. After the temperature of the glass door body 2 is increased, condensation can be effectively prevented.

[0029] In this embodiment, please refer to Figure 4 An air intake hole 12 is provided on one side of the door frame 1, and one end of the hose 44 is located in the inner cavity of the air intake hole 12. In this embodiment, one end of the hose 44 can absorb external air through the air intake hole 12 and transmit it to the inner cavity of the elastic seal 11, thereby enhancing the airtightness between the elastic seal 11 and the glass door body 2.

[0030] In this embodiment, please refer to Figure 3The middle glass 21, the outer glass 22, and the inner glass 23 are all made of LOW-E glass with ultra-low reflectivity. In this embodiment, the LOW-E glass is composed of a LOW-E film, which can effectively reflect infrared radiation, reduce thermal conductivity, and further avoid condensation through its special film layer structure.

[0031] In this embodiment, please refer to Figure 3 The middle glass 21, the outer glass 22, and the inner glass 23 are all made of glass material with ultra-low emissivity E=0.035 and thermal conductivity K=3.24. In this embodiment, by adopting this glass material, the thermal conductivity K of the finished glass door can be reduced to about 1.0, thereby reducing the power consumption of the whole machine by about 5%. In addition, the glass door remains condensation-free under the conditions of an ambient temperature of 35°C and a humidity of 75%.

[0032] In this embodiment, please refer to Figure 2 , Figure 4 A pressure sensor connected to a servo motor 42 is provided inside the elastic seal 11. The pressure sensor is used to detect the air pressure inside the elastic seal 11. In this embodiment, the air pressure inside the elastic seal 11 is detected by the pressure sensor. When the air pressure inside the elastic seal 11 leaks, the internal air pressure decreases, and the servo motor 42 is started to make the hose 44 inflate the elastic seal 11.

[0033] Working principle of this utility model:

[0034] Step 1: By using a three-glass two-cavity insulating glass design, the hollow air layer forms an effective heat insulation barrier, which effectively reduces the transfer of heat. At the same time, the glass is made of LOW-E glass. The LOW-E film effectively reflects infrared radiation and reduces thermal conductivity through its special film layer structure. At the same time, a heating film 24 is provided to heat the periphery of the glass door body 2 through the heating film 24, so that the overall temperature of the glass door body 2 rises to be higher than the dew point temperature of the indoor air, effectively preventing the generation of condensation water. At the same time, the temperature of the glass door body 2 can be detected in real time through the temperature sensor 25. When the temperature is low, condensation water may be generated, and the glass door body 2 is heated;

[0035] Step 2, the servo motor 42 is used to give power to control the rotation of the rotating shaft 43, and the rotation of the rotating shaft 43 drives the squeezing block 45 to rotate in the inner cavity of the peristaltic chamber 41. Since the inner wall of the peristaltic chamber 41 is provided with a hose 44, when the squeezing block 45 rotates at a high speed, one side of the squeezing block 45 continuously squeezes the surface of the hose 44, causing the hose 44 to deform, and then restores to its original state due to its own elastic force, so that one end of the hose 44 generates positive pressure to discharge air, and the other end of the hose 44 generates negative pressure to inhale air, so that the hose 44 inhales air through the air suction hole 12, and injects air into the inner cavity of the elastic seal 11 through the other end, so that the elastic seal 11 is inflated and expanded, filling the gap between the door frame 1 and the glass door body 2, thereby enhancing the sealing effect of the door body;

[0036] Step three, power is given by the stepper motor 31 to control the main sprocket 32 ​​to rotate. Since the outer edge of the main sprocket 32 ​​and the inner wall of the chain 33 are adapted to each other, the main sprocket 32 ​​drives the chain 33 to rotate. The rotation of the chain 33 can drive the two scrapers 35 on the outer side to move. Since the two scrapers 35 are respectively in contact with one side of the outer glass 22 and the inner glass 23, by repeatedly controlling the rotation of the chain 33, the two scrapers 35 can continuously wipe the glass door to remove condensation or dust on the glass door.

[0037] The above shows and describes the basic principle, main features and advantages of the utility model. The utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A three-glass two-chamber glass door with self-cleaning function for a vertical refrigerated display cabinet, comprising a door frame (1), characterized in that: The inner wall of the door frame (1) is provided with a glass door body (2), the glass door body (2) comprises a middle layer of glass (21), the top and bottom of the middle layer of glass (21) are respectively provided with an outer layer of glass (22) and an inner layer of glass (23), a first chamber is formed between the middle layer of glass (21) and the outer layer of glass (22), and a second chamber is formed between the middle layer of glass (21) and the inner layer of glass (23); A cleaning device (3) is provided at one end of the door frame (1), and the cleaning device (3) comprises a stepping motor (31). The output end of the stepping motor (31) is fixedly connected to a main sprocket (32). A chain (33) is provided on the outer side of the main sprocket (32). A secondary sprocket (34) is provided on one end of the inner wall of the chain (33). A scraper (35) is provided on the outer side of the top and bottom of the chain (33), respectively. One side of the two scrapers (35) is in contact with the outer layer of glass (22) and the inner layer of glass (23), respectively.

2. The three-glass two-chamber glass door with self-cleaning function for a vertical refrigerated display cabinet according to claim 1, characterized in that: The inner wall of the door frame (1) is provided with an elastic sealing member (11), and a plurality of peristaltic pumps (4) are provided inside the door frame (1). The peristaltic pump (4) comprises a peristaltic chamber (41) and a servo motor (42). The output end of the servo motor (42) is fixedly connected to a rotating shaft (43), and an extrusion block (45) is provided on the outer side of the top end of the rotating shaft (43). The inner wall of the peristaltic chamber (41) is provided with a hose (44), and the outer side of the extrusion block (45) is transitionally matched with the inner wall of the peristaltic chamber (41).

3. The three-glass two-chamber glass door with self-cleaning function for a vertical refrigerated display cabinet according to claim 1, characterized in that: A heating film (24) for heating the middle glass (21) is arranged on the outside of the middle glass (21), and a temperature sensor (25) is arranged inside the middle glass (21).

4. The three-glass two-chamber glass door with self-cleaning function for a vertical refrigerated display cabinet according to claim 2, characterized in that: An air suction hole (12) is provided on one side of the door frame (1), and one end of the hose (44) is located in the inner cavity of the air suction hole (12).

5. The three-glass two-chamber glass door with self-cleaning function for a vertical refrigerated display cabinet according to claim 1, characterized in that: The middle layer glass (21), the outer layer glass (22) and the inner layer glass (23) are all made of LOW-E glass with ultra-low reflectivity.

6. The three-glass two-chamber glass door with self-cleaning function for a vertical refrigerated display cabinet according to claim 1, characterized in that: The middle layer glass (21), the outer layer glass (22) and the inner layer glass (23) are all made of glass material with an ultra-low emissivity E=0.035 and a thermal conductivity coefficient K=3.

24.

7. The three-glass two-chamber glass door with self-cleaning function for a vertical refrigerated display cabinet according to claim 2, characterized in that: An air pressure sensor connected to a servo motor (42) is arranged inside the elastic sealing member (11), and the air pressure sensor is used to detect the air pressure inside the elastic sealing member (11).

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