CN113758118B

CN113758118B - Commercial refrigerator and sealing mechanism of unit thereof

Info

Publication number: CN113758118B
Application number: CN202110984176.5A
Authority: CN
Inventors: 黄甘霖; 肖海峰; 陶旭
Original assignee: Hefei Zhongxue Refrigeration Equipment Co ltd
Current assignee: Hefei Zhongxue Refrigeration Equipment Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2023-09-22
Anticipated expiration: 2041-08-25
Also published as: CN113758118A

Abstract

The application relates to the technical field of commercial refrigerator units, and discloses a sealing mechanism of a commercial refrigerator and a commercial refrigerator unit, which comprises a refrigerator air duct, wherein the refrigerator air duct is arranged outside a refrigerator body of the commercial refrigerator and comprises: the bottom plate is arranged at the top of the box body; the air duct is arranged above the bottom plate and communicated with the inside of the box body, comprises a water storage tank and is arranged at the bottom of the inner side of the air duct; the first sealing hole is formed in the side wall of the air duct, one end of the first sealing hole is communicated with the bottom of the water storage tank, and the other end of the first sealing hole is communicated to the outside of the air duct; according to the sealing mechanism of the commercial refrigerator and the unit thereof, the water receiving box is matched with the groove to form the water storage space, and according to the principle of the communicating vessel, the water level of defrosting water in the water storage space is controlled to be stabilized in a state capable of sealing the first sealing hole, so that no air flows between the air duct and the outside, the refrigerating effect of the refrigerator is improved, the compressor can work normally, and the service life of the refrigerator is prolonged.

Description

Commercial refrigerator and sealing mechanism of unit thereof

Technical Field

The application relates to the technical field of commercial refrigerator units, in particular to a commercial refrigerator and a sealing mechanism of the commercial refrigerator unit.

Background

The refrigerator is a common household appliance in the life of people and is often used for preserving foods, fruits, vegetables and the like, and becomes an irreplaceable part in the life of people, and meanwhile, the variety of the refrigerator is also increasing. The common refrigerating module of the refrigerator is arranged in the refrigerator, and the internal use space of the refrigerator is reduced due to the influence of the volume of the refrigerating module. In the prior art, a refrigerating module of a commercial refrigerator is arranged outside a refrigerator body, and the space inside the commercial refrigerator can be greatly utilized.

For the commercial refrigerator, an evaporator in a refrigerating module is arranged inside an air duct, other components in the refrigerating module are arranged outside the air duct, and a liquid inlet pipe, an air return pipe, a temperature control line and a defrosting water channel share the same channel to enter and exit the air duct. However, defrosting water only exists when the refrigerator automatically frosts or does not work, so that cold air in the air channel of the unit sinks to form negative pressure when the commercial refrigerator works normally, external air can enter the air channel of the unit along gaps among the liquid inlet pipe, the air return pipe and the temperature control line, the refrigerating effect in the air channel of the unit is further reduced, and the running power consumption of the compressor is increased.

Disclosure of Invention

The application aims to solve the problem that the refrigerating effect is poor due to the fact that an air duct of a unit is not tightly sealed in the prior art, and provides a sealing mechanism of a commercial refrigerator and the unit thereof.

In order to achieve the above object, an aspect of the present application provides a sealing mechanism of a commercial refrigerator unit, comprising:

refrigerator wind channel sets up in the outside of the box of commercial refrigerator, includes:

the bottom plate is arranged at the top of the box body;

the wind channel, install the top of bottom plate with the inside intercommunication of box includes:

the water storage tank is arranged at the bottom of the inner side of the air duct;

the first sealing hole is formed in the side wall of the air duct, one end of the first sealing hole is communicated with the bottom of the water storage tank, and the other end of the first sealing hole is communicated to the outside of the air duct;

the evaporator is arranged in the air duct and used for starting to reduce the temperature of the air in the air duct;

the condenser is arranged above the bottom plate and used for being started to realize heat exchange between the refrigerant in the condenser and the outside;

the fan is arranged on one side of the condenser and used for accelerating the flow of air around the condenser;

the groove is formed at the bottom of the air duct;

the water receiving box is arranged above the bottom plate to form a water storage space, one end of the water storage box is arranged outside the air duct, the other end of the water storage box extends to the inside of the groove and is matched with the groove, and the water storage groove and the first sealing hole extend to the inside of the water receiving box.

Optionally, the water receiving box further comprises a saw cut arranged at the top of the water receiving box, and the height of the saw cut is larger than that of the first sealing hole.

Optionally, the air duct is composed of two foams which are matched up and down.

Optionally, two inclined planes which are symmetrical and connected with each other about the water storage groove are arranged inside the foam positioned below, and the low-level ends of the two inclined planes are communicated with the water storage groove.

Optionally, two opposite sides of the inclined plane are provided with inclined grooves, and the low-level ends of the inclined grooves extend into the water storage groove.

Optionally, the foam further comprises a second sealing hole, wherein the second sealing hole is formed in the side wall of the foam.

Optionally, the height of the second sealing hole is greater than the height of the first sealing hole.

Optionally, a sealing assembly is disposed inside the second sealing hole, and the sealing assembly comprises sealant or sponge.

Optionally, a water baffle is convexly arranged on the periphery of the bottom plate.

In another aspect, the application provides a commercial refrigerator comprising the cabinet and a sealing mechanism as described in any of the above.

Through the technical scheme, the sealing mechanism of the commercial refrigerator and the unit thereof provided by the application forms the water storage space by matching the water receiving box with the groove, and according to the principle of the communicating vessel, the water level of defrosting water in the water storage space is controlled to be stabilized in a state capable of sealing the first sealing hole, so that no air flows between the air duct and the outside, the refrigerating effect of the refrigerator is improved, the compressor can work normally, and the service life of the refrigerator is prolonged.

Drawings

Fig. 1 is a schematic structural view of a sealing mechanism of a commercial refrigerator group according to an embodiment of the present application;

FIG. 2 is an enlarged schematic view according to area A of FIG. 1;

FIG. 3 is a schematic view of the location of a water receiving box in a sealing mechanism of a commercial refrigerator unit according to one embodiment of the present application;

FIG. 4 is a schematic view of the structure of the inside of an air duct in a sealing mechanism of a commercial refrigerator group according to an embodiment of the present application;

fig. 5 is a schematic view showing a structure of a water receiving box in a sealing mechanism of a commercial refrigerator group according to an embodiment of the present application.

Description of the reference numerals

1. Condenser 2 and evaporator

3. Air duct 4 and bottom plate

5. Inclined plane 6, inclined slot

7. Reservoir 8, first seal hole

9. Water receiving box 10, saw cut

11. Blower 12, second seal hole

13. Water baffle

Detailed Description

The following describes specific embodiments of the present application in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the application, are not intended to limit the application.

Fig. 1 is a schematic structural view of a sealing mechanism of a commercial refrigerator group according to an embodiment of the present application; fig. 2 is an enlarged schematic view according to region a in fig. 1. In fig. 1 and 2, the sealing mechanism of the commercial refrigerator group may include a refrigerator duct. Specifically, the refrigerator duct may include a bottom plate 4, a duct 3, an evaporator 2, a condenser 1, a blower 11, a groove, and a water receiving box 9. In particular, the air duct 3 may comprise a water reservoir 7 and a first sealing hole 8.

The refrigerator wind channel sets up in the box outside of commercial refrigerator, and bottom plate 4 installs at the top of box, and wind channel 3 installs in the top of bottom plate 4, and communicates with the box inside. The water storage tank 7 is arranged at the bottom of the inner side of the air duct 3, the first sealing hole 8 is arranged on the side wall of the air duct 3, one end of the first sealing hole 8 is communicated with the water storage tank 7, and the other end of the first sealing hole 8 is communicated with the outside of the air duct 3. The evaporator 2 is installed inside the air duct 3 for starting to lower the temperature of the gas inside the air duct 3. The condenser 1 is installed above the bottom plate 4 for starting up to achieve heat exchange of the refrigerant inside the condenser 1 with the outside. A blower 11 is installed at one side of the condenser 1 for accelerating the flow of air around the condenser 1. The water receiving box 9 is arranged above the bottom plate 4 to form a water storage space, and one end of the water receiving box 9 is arranged outside the air duct 3. The bottom of wind channel 3 has seted up the recess, and the other end of water receiving box 9 extends to the recess inside and cooperates with the recess, and catch basin 7 and first sealed hole 8 all extend to the inside of water receiving box 9.

Among them, the relative positions of the condenser 1 and the water receiving box 9 as shown in fig. 1 and 2 are only one example for supplementing and explaining the technical solution of the present application. In fact, the relative position between the condenser 1 and the water receiving box 9 can be adjusted in any manner known to the person skilled in the art, provided that a thermal conduction between the two is achieved.

In the operation of the commercial refrigerator, the compressor can compress the low-temperature low-pressure gaseous refrigerant into the high-temperature gaseous refrigerant, and the high-temperature high-pressure gaseous refrigerant is changed into the medium-temperature high-pressure liquid refrigerant after heat dissipation through the condenser 1, so that the temperature around the condenser 1 is rapidly increased. The medium-temperature high-pressure liquid refrigerant is depressurized through the capillary tube to form a low-temperature low-pressure liquid refrigerant, and flows into the evaporator 2 to absorb heat and vaporize. The refrigerant absorbs heat and evaporates so that the temperature around the evaporator 2 drops sharply, and the temperature of the gas inside the air duct 3 drops. The vaporized refrigerant enters the compressor again, so that the continuous refrigeration of the refrigerator is realized. During the refrigeration of the evaporator 2, water vapor in the air duct 3 is condensed into frost on the fins of the evaporator 2. During the non-operation or automatic defrosting of the evaporator 2, frost on the fins of the evaporator 2 will melt into water and then collect at the bottom of the air duct 3. The collected water enters the water storage space along the water storage groove 7 and the first sealing hole 8, and the first sealing hole 8 is sealed by the communicating vessel principle. Under the normal operating condition of the commercial refrigerator, the high-temperature refrigerant in the condenser 1 dissipates heat through the fins, so that the temperature on the fins and around the fins are high, the fan 11 accelerates the heat dissipation around the condenser 1, the condenser 1 can better realize the heat dissipation function, and when the heat is transferred to the water receiving box 9, the evaporation of defrosting water can be accelerated. In case of insufficient defrosting water inside the water receiving box 9 or insufficient defrosting water due to too fast evaporation, the first sealing hole 8 is opened, resulting in the air duct 3 communicating with the outside air. Defrosting is performed regularly according to the evaporation efficiency of defrosting water inside the water receiving box 9, so that the condition that the air duct 3 is communicated with the outside air due to insufficient defrosting water is avoided. The air duct 3 is communicated with the outside air, so that the internal refrigeration effect of the refrigerator is poor, the refrigeration energy consumption of the refrigerator is increased, and the long-time communication can lead to high-load operation of the compressor, so that the service life of the compressor is shortened.

Because the evaporator 2 is installed inside the air duct 3, the condenser 1, the capillary tube and the compressor are all outside the air duct 3, so that the liquid inlet pipe connected with the evaporator 2 by the capillary tube needs to pass through the air duct 3, the air return pipe connected with the evaporator 2 by the compressor needs to pass through the air duct 3, and the temperature control line for monitoring the internal temperature of the air duct 3 also needs to pass through the air duct 3. In traditional this kind of commercial refrigerator, muffler, feed liquor pipe and control by temperature change line and the passageway sharing of defrosting water, consequently when there is not defrosting water to flow, the muffler, exist between feed liquor pipe and the control by temperature change line with the external air flow gap, because the wind channel 3 inside is negative pressure for external air gets into wind channel 3 inside, reduced the inside refrigeration effect in wind channel 3, also improved the energy consumption of compressor simultaneously. In this embodiment, the way that the channel of muffler, feed liquor pipe and control by temperature change line and defrosting water channel separate is adopted, and defrosting water channel forms the intercommunication ware structure through water receiving box 9 and wind channel 3 to this makes defrosting water maintain in the height that can seal first sealed hole 8, and then has realized the purpose to the inside seal of wind channel 3. The refrigerating capacity of the refrigerator is improved, and meanwhile, the running energy consumption of the compressor is reduced.

Fig. 1 is a schematic structural view of a sealing mechanism of a commercial refrigerator group according to an embodiment of the present application. In fig. 1, the refrigerator duct further includes a water baffle 13. The water baffle 13 is arranged at the periphery of the bottom plate 4 in a protruding manner. When the defrosting water is too much, the defrosting water in the water receiving box 9 is not evaporated, the excessive defrosting water overflows to the upper part of the bottom plate 4 from the inside of the water storage space, and the water baffle 13 can store the overflowed defrosting water, so that unnecessary trouble and loss caused by outflow of the defrosting water from the top of the bottom plate 4 are avoided.

Fig. 5 is a schematic view showing a structure of a water receiving box in a sealing mechanism of a commercial refrigerator group according to an embodiment of the present application. In fig. 5, the refrigerator tunnel may further include a saw cut 10. The saw cut 10 is arranged at the top of the water receiving box 9, and the height of the saw cut 10 is larger than that of the first sealing hole 8.

When the defrosting water in the water receiving box 9 is excessive, the defrosting water flows to the upper side of the bottom plate 4 along the saw cut 10. For defrosting water above the bottom plate 4, the fan 11 can drive the condenser 1 to generate high temperature to accelerate evaporation of the defrosting water. The saw cuts 10 can limit the overflow direction of the defrosting water, so that the unnecessary defrosting water is prevented from flowing into the refrigerator along the air inlet and outlet of the air duct 3, and unnecessary trouble and loss are further caused.

Although the larger the evaporation area of the water receiving box, the faster the evaporation speed. However, with the increase of the evaporation rate, the height of the defrosting water in the water receiving box cannot meet the sealing requirement for a long time. Therefore, the choice of the suitable evaporation area of the water receiving box is also of considerable importance for the implementation of the solution according to the application. Accordingly, the inventors set up a plurality of experiments according to the difference of evaporation areas, the experimental results are shown in Table 1,

table 1 numerical table of evaporation area and evaporation time of water receiving box

Sequence number	Ring temperature(℃)	Wind speed (m/s)	Condenser temperature (. Degree. C.)	Evaporation area ([ 2 ])	Evaporation time (h)
						1	5	2	28	10	10
2	5	2	28	20	6
						3	5	2	28	30	4.5
4	5	2	28	40	3
						5	10	2	30	10	9
6	10	2	30	20	5.5
						7	10	2	30	30	4
8	10	2	30	40	2.5
						9	16	2	35	10	8.5
10	16	2	35	20	5
						11	16	2	35	30	3.5
12	16	2	35	40	2.3
						13	25	2	38	10	8
14	25	2	38	20	4.5
						15	25	2	38	30	3
16	25	2	38	40	2
						17	32	2	42	10	8
18	32	2	42	20	4.5
						19	32	2	42	30	2.5
20	32	2	42	40	1.8

In table 1, the higher the ring temperature (ambient temperature), the higher the temperature of the condenser 1, and the wind speed of the blower 11 stabilized at 2m/s, the evaporation area was the horizontal sectional area of the water receiving box 9 located outside the air duct 3. The corresponding evaporation time difference is not large under the conditions of different ring temperatures, the same wind speed and the same evaporation area, so that the influence of the ring temperature on the evaporation time of the defrosting water can be judged not to be large. At the same annular temperature, the same wind speed and different evaporation areasUnder the condition that the corresponding evaporation time difference is large, the evaporation area is judged to have a great influence on the evaporation time of the defrosting water. In this experiment, 10cm was used ² 、20cm ² 、30cm ² 40cm ² For example, the four groups of evaporation areas, the larger the evaporation area, the shorter the evaporation time. By combining the situation of the refrigerator under actual working, the excessively short defrosting time can increase the power consumption of the compressor, thereby influencing the service life of the compressor; the defrosting time is too long, so that the evaporator is frozen, the heat exchange inside and outside the evaporator is affected, the defrosting efficiency and the refrigerating effect are further affected, and the defrosting is generally adopted for 4-6 hours in the prior art. By combining Table 1 with a defrosting time of 4 to 6 hours, it can be found that the evaporation area was 20cm ² Can meet the condition that the defrosting water is continuously sealed to the first sealing hole 8, so the horizontal sectional area of the water receiving box 9 positioned outside the air duct 3 can be preferably set to be 20cm ² 。

In this embodiment, the specific structure of the water receiving box 9 may be various forms known to those skilled in the art, but in this embodiment of the present application, the water receiving box 9 may include a heat insulating plate as well as a heat conductive plate.

The heat insulating board is arranged above the bottom plate 4, the heat conducting plate is arranged above the heat insulating board, and a water storage space is formed between the heat insulating board and the inside of the heat conducting plate.

If the height of the defrosting water in the water storage space reaches the heat conducting plate, the high temperature generated by the condenser 1 is transmitted to the heat conducting plate through the fan 11, so that evaporation of the defrosting water is accelerated, and the defrosting water in the water storage space is maintained at the height capable of sealing the first sealing hole 8. If the height of the defrosting water in the water storage space does not reach the heat conducting plate, the heat insulating plate can isolate a part of heat generated by the condenser 1, so that evaporation of the defrosting water in the water storage space is slowed down, the defrosting water in the water storage space is maintained at the height capable of sealing the first sealing hole 8, and the condition that the air duct 3 is communicated with the outside air due to insufficient defrosting water is avoided. The air duct 3 is communicated with the outside air, so that the internal refrigeration effect of the refrigerator is poor, the refrigeration energy consumption of the refrigerator is increased, and the long-time communication can lead to high-load operation of the compressor, so that the service life of the compressor is shortened.

In this embodiment, the height of the heat shield cannot be smaller than the height of the first sealing hole 8 for the heat shield to be compared with the height of the first sealing hole 8. Under the condition that the height of the heat insulating plate is smaller than that of the first sealing hole 8, defrosting water flows into the water storage space along the water storage groove 7, and according to the principle of the communicating vessel, the defrosting water can be contacted with the heat conducting plate, and the evaporation of the defrosting water is accelerated by the heat conducting plate, so that the defrosting water is maintained on the same horizontal plane with the connecting surfaces of the heat insulating plate and the heat conducting plate. However, since the height of the heat insulating plate is smaller than the height of the first sealing hole 8, the defrosting water cannot maintain the sealing state of the first sealing hole 8, and the inside of the air duct 3 contacts with the outside, so that the refrigerating effect inside the air duct 3 is deteriorated. The height of the insulating plate and the first sealing hole 8 may thus be of a form known to the person skilled in the art, for example the insulating plate being identical to the height of the first sealing hole 8 or the insulating plate being greater than the height of the first sealing hole 8. In a preferred example of the present application, however, the height of the heat insulating plate is greater than the height of the first sealing hole 8 in consideration of natural evaporation of water in actual circumstances.

In the case that the height of the heat insulating plate is greater than the height of the first sealing hole 8, the defrosting water enters the inside of the water storage space along the water storage groove 7 and contacts both the heat insulating plate and the heat conducting plate. Under the condition of normal operation of the commercial refrigerator, the condenser 1 dissipates heat of the refrigerant in the refrigerator, and the high temperature generated by the condenser 1 contacts with the heat conducting plate and causes the temperature of the heat conducting plate to rise. The heat conducting plate with high temperature accelerates the evaporation of the defrosting water contacted with the heat conducting plate, the heat insulating plate insulates the external high temperature, and the defrosting water is stabilized at the water level capable of sealing the first sealing hole 8 by the cooperation of the heat conducting plate and the heat insulating plate. The first sealing hole 8 in a sealing state can isolate the contact between the inside of the air duct 3 and the outside of the air duct 3, so that the refrigerating effect of the inside of the air duct 3 is guaranteed.

In addition, the specific material of the heat insulation board may be various forms known to those skilled in the art, such as glass wool, rock wool or foam. The specific material of the heat-conducting plate can be various forms known to those skilled in the art, such as heat-conducting silicone grease, heat-conducting silica gel, etc.

The specific structure of the air duct 3 may be in various forms known to those skilled in the art, for example, the air duct 3 is directly sleeved on the outside of the base plate 4, etc. In a preferred example of the present application, however, the specific structure of the air duct 3 may be as shown in fig. 3 in consideration of the cooling effect inside the refrigerator. Specifically, the air duct 3 includes two foams that are matched up and down, and the foam located below is connected to the top of the bottom plate 4.

The air duct is formed by two foams matched up and down, so that cold air in the air duct 3 can only contact with the foams, and the good heat insulation effect of the foams can ensure that the cold air in the air duct 3 is efficiently transferred into the refrigerator body of the refrigerator. The conventional commercial refrigerator is directly sleeved outside the bottom plate 4 by using foam, so that the cool air inside the air duct 3 is in contact with not only the foam but also the bottom plate 4. The bottom plate 4 is made of plastic material, so that the cold air in the air duct 3 is consumed to a certain extent, and the refrigerating effect in the refrigerator body of the commercial refrigerator is affected. The combined form of the foam matched up and down is adopted, so that the loss of cold air is reduced to a certain extent, and the refrigerating effect of the refrigerator is indirectly improved.

The specific material of the foam may be various forms known to those skilled in the art, such as an organic foam, a plant fiber foam, etc., and in a preferred example of the present application, the foam may be a structural foam in consideration of the heat insulation and sound insulation of the duct 3.

FIG. 3 is a schematic view of the location of a water receiving box in a sealing mechanism of a commercial refrigerator unit according to one embodiment of the present application; fig. 4 is a schematic view illustrating the structure of the inside of an air duct in a sealing mechanism of a commercial refrigerator group according to an embodiment of the present application. In fig. 3 and 4, the refrigerator duct further comprises two inclined planes 5 and a chute 6.

The two inclined planes 5 are arranged inside the foam positioned below, and the low-level ends of the two inclined planes 5 are symmetrically communicated with the water storage groove 7. The chute 6 is provided on the opposite side of the two inclined planes 5, and the lower end of the chute 6 extends into the water storage tank 7.

During normal operation of the commercial refrigerator, the liquid refrigerant inside the evaporator 2 absorbs heat to evaporate, so that the temperature around the evaporator 2 is lowered. The temperature reduction can cause water vapor in the air inside the air duct to condense into frost on the fins and copper pipes of the evaporator 2, and when the evaporator 2 does not refrigerate, the frost on the fins and copper pipes of the evaporator 2 becomes water and flows to the middle and high ends of the two inclined planes 5. Due to the influence of gravity, the defrosting water flows along the lower ends of the two inclined planes 5 respectively and is converged inside the chute 6, and flows into the water storage tank 7 along the lower ends of the chute 6. The collection of defrosting water can be accelerated through the two inclined planes 5 and the inclined groove 6, so that the defrosting water can rapidly enter the water storage space to seal the first sealing hole 8.

Fig. 3 is a schematic view of the position of a water receiving box in a sealing mechanism of a commercial refrigerator group according to an embodiment of the present application. In fig. 3, the air duct further includes a second sealing hole 12, the second sealing hole 12 being opened at a side wall of the foam, and a sealing assembly disposed inside the second sealing hole 12.

Because the evaporator 2 is installed inside the air duct 3, the condenser 1, the capillary tube and the compressor are all outside the air duct 3, so that the liquid inlet pipe connected with the evaporator 2 by the capillary tube needs to pass through the air duct 3, the air return pipe connected with the evaporator 2 by the compressor needs to pass through the air duct 3, and the temperature control line for monitoring the internal temperature of the air duct 3 also needs to pass through the air duct 3. The liquid inlet pipe, the air return pipe and the temperature control line penetrate through the second sealing hole 12 and are sealed and fixed through the sealing assembly, so that the communication between the inside and the outside of the air duct 3 can be isolated, and the refrigerating efficiency of the refrigerator is improved.

The material of the second sealing hole 12 may be in various forms known to those skilled in the art, such as a sealant, a sponge, rubber, etc. In the preferred example of the present application, however, the sealing assembly is sealed with a sealant in consideration of the material of the air duct 3 and the sealing effect of the sealing assembly.

The height relationship between the second seal hole 12 and the first seal hole 8 may be various forms known to those skilled in the art, for example, the height of the second seal hole 12 is greater than the height of the first seal hole 8, the height of the second seal hole 12 is less than the height of the first seal hole 8, etc. In the preferred example of the present application, however, the height of the second sealing hole 12 is greater than the height of the first sealing hole 8 in consideration of the influence of the defrosting water on the liquid inlet pipe, the air return pipe, and the temperature control line. If the height of the second sealing hole 12 is too low, when the defrosting water overflows to the top of the bottom plate 4, the liquid inlet pipe, the air return pipe and the temperature control line are immersed in the defrosting water, so that the refrigerating effect of the evaporator 2 is affected.

For the specific structure of the heat conducting plate, considering the difference of heat conducting capacities of different heat conducting materials, the heat conducting plate can be formed by superposing a plurality of stages of heat conducting materials with different heat conducting capacities, and the heat conducting capacities of the heat conducting materials are gradually decreased from top to bottom. Therefore, when the defrosting water enters the water storage space, the higher the water level is, the higher the evaporation efficiency of the defrosting water is, and the evaporation efficiency is decreased along with the decrease of the water level. The evaporation efficiency of control defrosting water can guarantee that the water storage space is inside to have enough water to seal first sealed hole 8 for the control of water level is more nimble, avoids appearing lacking the water period and leads to the inside and the outside intercommunication of wind channel 3, influences the refrigeration effect of refrigerator.

The refrigerator air duct can further comprise a water level monitor, a cover plate, a driving assembly and a controller, wherein the water level monitor is arranged in the water storage space and used for detecting the water level of defrosting water. The apron sets up at the top in retaining space, and is connected with drive assembly, and the controller is connected with water level monitor and drive assembly. The pre-warning water level at which the first sealing hole 8 cannot be sealed is preset, and the water level monitor monitors the water level inside the water storage space. When the defrosting water level reaches the early warning water level, the controller controls the driving assembly to start, and the driving assembly drives the cover plate to move to the top of the water storage space and seals the water storage space, so that the evaporation efficiency of defrosting water can be effectively reduced. The specific structure of the drive assembly may take a variety of forms known to those skilled in the art, such as hydraulic cylinders, motors, and the like. In the preferred example of the application, the cover plate can be driven by the motor to turn over and cover the top of the water storage space, so that the purpose of reducing the evaporation efficiency of the defrosting water is achieved. For the specific material of the cover plate, the water affinity of different materials is considered, and the evaporation efficiency of the defrosting water can be further reduced by arranging a hydrophobic coating film at the bottom of the cover plate.

On the other hand, the application also provides a commercial refrigerator. The commercial refrigerator may comprise a refrigerator body and a sealing mechanism of the refrigerator set, in particular the sealing mechanism of the refrigerator set comprises a refrigerator air duct. Specifically, the refrigerator duct may include a bottom plate 4, a duct 3, an evaporator 2, a condenser 1, a blower 11, a groove, and a water receiving box 9. In particular, the air duct 3 may comprise a water reservoir 7 and a first sealing hole 8.

Through the technical scheme, the sealing mechanism of the commercial refrigerator unit provided by the application forms the water storage space by matching the water receiving box 9 with the groove, and controls the water level of defrosting water in the water storage space to be stabilized in a state of sealing the first sealing hole 8 according to the principle of the communicating vessel, so that no air flows between the air duct 3 and the outside, the refrigerating effect of the refrigerator is improved, the refrigerator can work normally, and the service life of the refrigerator is prolonged.

The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the scope of the technical concept of the present application, and all the simple modifications belong to the protection scope of the present application. In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.

Moreover, any combination of the various embodiments of the application can be made without departing from the spirit of the application, which should also be considered as disclosed herein.

Claims

1. A sealing mechanism for a commercial refrigerator unit, comprising:

a bottom plate (4) arranged at the top of the box body;

the wind channel (3) is installed the top of bottom plate (4), with the inside intercommunication of box includes:

the water storage groove (7) is formed in the bottom of the inner side of the air duct (3);

the first sealing hole (8) is formed in the side wall of the air duct (3), one end of the first sealing hole is communicated with the bottom of the water storage groove (7), and the other end of the first sealing hole is communicated to the outside of the air duct (3);

an evaporator (2) installed inside the air duct (3) for being started to reduce the temperature of the gas inside the air duct (3);

a condenser (1) installed above the bottom plate (4) for being started to realize heat exchange between the refrigerant inside the condenser (1) and the outside;

a fan (11) installed at one side of the condenser (1) for accelerating the flow of air around the condenser (1);

the groove is formed at the bottom of the air duct (3);

the water receiving box (9) is arranged above the bottom plate (4) to form a water storage space, one end of the water storage space is arranged outside the air duct (3), the other end of the water storage space extends to the inside of the groove and is matched with the groove, and the water storage groove (7) and the first sealing hole (8) extend to the inside of the water receiving box (9);

the water receiving box further comprises a saw cut (10) arranged at the top of the water receiving box (9), and the height of the saw cut (10) is larger than that of the first sealing hole (8);

the water receiving box (9) comprises a heat insulation plate and a heat conduction plate, wherein the heat insulation plate is arranged above the bottom plate (4), and the heat conduction plate is arranged above the heat insulation plate.

2. Sealing mechanism according to claim 1, characterized in that the air duct (3) consists of two foams cooperating up and down.

3. Sealing mechanism according to claim 2, characterized in that the foam located below is internally provided with two mutually symmetrical and connected inclined planes (5) with respect to the water reservoir (7), the lower ends of the two inclined planes (5) being in communication with the water reservoir (7).

4. A sealing mechanism according to claim 3, characterized in that two of said inclined surfaces (5) are provided on opposite sides with a chute (6), the lower end of said chute (6) extending into the interior of said reservoir (7).

5. The sealing mechanism of claim 2, further comprising a second sealing aperture (12), the second sealing aperture (12) opening into a sidewall of any of the foams.

6. The sealing mechanism according to claim 5, characterized in that the height of the second sealing hole (12) is greater than the height of the first sealing hole (8).

7. The sealing mechanism according to claim 6, characterized in that the second sealing hole (12) is internally provided with a sealing assembly comprising a sealant or a sponge.

8. Sealing mechanism according to claim 1, characterized in that the base plate (4) is provided with a water deflector (13) peripherally protruding.

9. A commercial refrigerator comprising said cabinet and a sealing mechanism as claimed in any one of claims 1 to 8.