CN114343383A - Noise-reducing air supply device for refrigerated display cabinet - Google Patents

Abstract

The invention relates to the technical field of refrigeration equipment and discloses a noise-reduction air supply device for a refrigerated display cabinet. According to the invention, the fan blades and the air increasing bag are arranged, on the basis of the air quantity which can be absorbed by the existing motor set and fan blades, a certain ventilation quantity is increased for the inner cavity of the goods shelf bottom box, the barrier plate is arranged, the self kinetic energy of the air flow is consumed by impact, the air speed of the air flow is reduced, the effective noise reduction effect is realized, the noise reduction clamping plate and the barrier plate are arranged, the surface of the barrier plate generates an impact heat generation phenomenon, the air flow circulating inside the air outlet is heated by utilizing the heat conduction between the noise reduction clamping plate and the barrier plate, the temperature of the gas circulating in the inner cavity of the goods shelf bottom box is further improved, the surface frosting degree of the evaporator is effectively reduced, and the frosting period is shortened.

Description

Noise-reducing air supply device for refrigerated display cabinet

Technical Field

The invention relates to the technical field of refrigeration equipment, in particular to a noise-reducing air supply device for a refrigerated display cabinet.

Background

The refrigerated showcase is a low-temperature refrigerated showcase which is commonly used in places such as supermarkets, markets, bars and the like to refrigerate wines, foods and the like, the prior refrigerated showcase generally comprises a fan, a shelf, an evaporator, an air outlet, an air inlet and the like, wherein a cavity is arranged at the bottom of the shelf, one end of the cavity is provided with the air inlet, a fan is arranged near the air inlet, an evaporator is arranged at one side of the fan, the fan is used for absorbing external ambient air, the temperature of the air is reduced and cooled by the evaporator and is converted into cold air, flows from bottom to top through the interior of the goods shelf, respectively flows to the air outlet at the bottom of each layer of goods shelf barrier and is discharged downwards, the air outlet device at the top end sprays cold air to the air inlet to form an air curtain to isolate the external environment from the environment in the showcase, so that the refrigerated showcase is also called as an air curtain type showcase.

When the existing refrigerated display cabinet is used, the problem of frosting on the surface of an evaporator exists due to the unstable external environment temperature, the existing refrigerated display cabinet is generally provided with a fan device for preventing the evaporator from frosting so as to increase the ventilation quantity and reduce the frosting degree, or the layout of the evaporator is changed so that the evaporator can be better contacted with air flow, the fan is utilized to reversely defrost, the mode of defrosting by additionally arranging the fan is realized, the high-air-speed air flow and the wall surface of a channel generate resonance noise due to larger air quantity, the fans are increased, the fan rotation noise is increased, and further the refrigerated display cabinet generates loud noise.

Disclosure of Invention

Aiming at the defects of the prior refrigerated display cabinet in the use process, the invention provides a noise-reducing air supply device for the refrigerated display cabinet, which has the advantages of noise reduction, energy consumption reduction and effective frost reduction, and solves the technical problems in the prior art.

The invention provides the following technical scheme: the utility model provides a refrigerated display case is with air supply arrangement that makes an uproar that falls, includes the goods shelves under casing, the income wind gap has been seted up at one side top of goods shelves under casing, the air supply duct has been seted up to the opposite side of goods shelves under casing, the inner chamber movable mounting of goods shelves under casing has the motor assembly, the one end fixed mounting of motor assembly has the flabellum, the outside fixed mounting of flabellum has the air increase bag that is located the upper and lower both ends of goods shelves under casing, the air increase bag has been seted up to one side of air increase bag, one side fixed mounting of air increase bag has the air outlet that is located the inboard of goods shelves under casing, the outside fixed mounting of air outlet has the splint of making an uproar, the inboard fixed mounting of the splint of making an uproar falls has the baffler, the vent has been seted up on the one end surface of the splint of making an uproar, the inner chamber fixed mounting of goods shelves under casing has the evaporimeter that is located the one end of air increase bag.

Preferably, the total number of the fan blades is twelve, the vertical lines of the centers of circles of the motor groups are used as boundary lines, the length values of the seven fan blades on one side of the motor groups are sequentially increased, in the combination of the seven fan blades, the maximum length value is the vertical distance value from the bottom end of the motor groups to the bottom end of the air increasing bag, the minimum length value is the vertical distance value from the top end of the motor groups to the inner side surface of the bottom box of the shelf, the vertical lines of the centers of circles of the motor groups are used as boundary lines, the length values of the five fan blades on the other side of the motor groups are equal, and the length values of the five fan blades are equal to the vertical distance value from the top end of the motor groups to the inner side surface of the bottom box of the shelf.

Preferably, the shape of the air increasing bag is rectangular, the surface of the air increasing bag has elasticity, and the surface of the air increasing bag, which faces the inner side of the goods shelf bottom box, is provided with a hard plate.

Preferably, the air outlet is cylindrical and is uniformly distributed on the inner side surface of the goods shelf bottom box.

Preferably, the noise reduction clamping plate is fixedly installed on the inner side surface of the bottom box of the goods shelf, the noise reduction clamping plate is hollow inside, and the surface of the noise reduction clamping plate has thermal conductivity.

Preferably, the separation board is rectangle, and the separation board is the slope form, and relative and crisscross distribution is installed at the inboard surface of the splint of making an uproar that falls, the separation board has the heat conductivity.

The invention has the following beneficial effects:

1. the invention arranges the fan blades, when the fan blades rotate, the fan blades with higher length value press the inner side of the air increasing bag to enable the air increasing bag to press the inner cavity of the air increasing bag downwards to exhaust instantly, and the volume is reduced rapidly, because the length values of the other fan blades are decreased gradually, the volume of the extruded air increasing bag begins to be increased gradually, the pressure difference between the inner cavity and the outer part of the air increasing bag is utilized to enable the outside air to be sucked back into the inner cavity of the air increasing bag and then discharged into the inner cavity of the goods shelf bottom box through the air outlet, and enters the inside of the evaporator along with the air flow in the inner cavity of the goods shelf bottom box, thereby achieving the purpose of not needing to add fan equipment, only utilizing a single group of motor group and fan blades, and increasing a certain ventilation volume for the inner cavity of the goods shelf bottom box on the basis of the air volume which can be sucked by the existing motor group and fan blades, and further avoiding arranging a plurality of groups of fans for increasing the air volume in the prior art, the rotating noise of the fan is increased, and simultaneously, the mechanical energy consumed by the rotation of the fan is doubled, so that the problem of overlarge energy consumption of the refrigerated display cabinet is caused.

2. According to the invention, by arranging the blocking plates, when the wind flow on the inner side surface of the goods shelf bottom box flows into the inner cavity of the noise reduction clamping plate through the ventilation opening, the blocking plates which are relatively staggered in the inner cavity of the noise reduction clamping plate are utilized, so that the wind flow collides with the surfaces of the blocking plates up and down in the flowing process, the movement of the wind flow is continuously blocked, the kinetic energy of the wind flow is consumed by the collision, the wind speed of the wind flow is reduced, the resonance noise generated by the high-speed wind flow and the inner side surface of the goods shelf bottom box is reduced, and the effective noise reduction effect is realized.

3. According to the invention, by arranging the noise reduction clamping plate and the blocking plate, when wind flow flows in the inner cavity of the noise reduction clamping plate and continuously collides with the blocking plate, the surface of the blocking plate generates an impact heat generation phenomenon, so that the colliding kinetic energy is converted into heat energy, the surface of the blocking plate continuously generates heat and heats up, the wind flow circulating inside the air outlet is heated by utilizing the heat conduction between the noise reduction clamping plate and the blocking plate, the temperature of the gas circulating in the inner cavity of the goods shelf bottom box is further increased, the temperature of the gas circulating in the inner cavity of the goods shelf bottom box is ensured to be far higher than the temperature of a refrigerant in the inner cavity of the evaporator, the surface frosting degree of the evaporator is effectively reduced, the frosting period is shortened, and the refrigeration and preservation effects of the refrigerated display cabinet are improved.

Drawings

FIG. 1 is a schematic cross-sectional front view of the structure of the present invention;

FIG. 2 is a cross-sectional side view of a fan blade of the present invention;

FIG. 3 is an enlarged view of a portion of the structure A shown in FIG. 1 according to the present invention.

In the figure: 1. a goods shelf bottom box; 2. an air inlet; 3. an air supply duct; 4. a motor unit; 5. a fan blade; 6. a wind increasing bag; 7. an air increasing port; 8. an air outlet; 9. a noise reduction splint; 10. a barrier plate; 11. a vent; 12. an evaporator.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a noise-reducing air supply device for a refrigerated display cabinet comprises a shelf bottom box 1, an air inlet 2 is arranged at the top of one side of the shelf bottom box 1, an air supply duct 3 is arranged at the other side of the shelf bottom box 1, a motor set 4 is movably arranged in an inner cavity of the shelf bottom box 1, a fan blade 5 is fixedly arranged at one end of the motor set 4, air increasing bags 6 positioned at the upper and lower ends of the shelf bottom box 1 are fixedly arranged outside the fan blade 5, an air increasing opening 7 is arranged at one side of each air increasing bag 6, an air outlet 8 positioned at the inner side of the shelf bottom box 1 is fixedly arranged at one side of each air increasing bag 6, a noise-reducing clamp plate 9 is fixedly arranged outside the air outlet 8, a barrier plate 10 is fixedly arranged at the inner side of the noise-reducing clamp plate 9, an air vent 11 is arranged on the surface of one end of the noise-reducing clamp plate 9, and an evaporator 12 positioned at one end of the air increasing bags 6 is fixedly arranged in the inner cavity of the shelf bottom box 1.

Referring to fig. 1-2, the total number of the fan blades 5 is twelve, and the vertical line of the center of circle of the motor set 4 is taken as a boundary line, the lengths of the seven fan blades 5 located on one side of the motor set 4 are sequentially increased, the maximum length of the combination of the seven fan blades 5 is the vertical distance from the bottom end of the motor set 4 to the bottom end of the air increasing bag 6, the minimum length of the combination of the seven fan blades 5 is the vertical distance from the top end of the motor set 4 to the inner side surface of the shelf bottom box 1, the vertical line of the center of circle of the motor set 4 is taken as a boundary line, the lengths of the five fan blades 5 located on the other side of the combination of the seven fan blades are equal, the length of the combination of the five fan blades 5 is equal to the vertical distance from the top end of the motor set 4 to the inner side surface of the shelf bottom box 1, and by setting the fan blades 5, when the motor set 4 drives the fan blades 5 to rotate, the fan blades 5 attract external air to enter the inner cavity of the shelf bottom box 1 through the air inlet 2, and further perform heat and heat exchange through the evaporator 12, the length of the fan blade 5 is different, when the fan blade 5 rotates, the fan blade 5 with larger length extrudes the inner side of the air increasing bag 6 below the fan blade 5, so that the air increasing bag 6 downwards presses the inner cavity of the fan blade to exhaust air instantly, the volume of the air increasing bag 6 is rapidly reduced, when the fan blade 5 with larger length passes through the air increasing bag 6, the length values of the other fan blades 5 are sequentially reduced, the volume of the extruded air increasing bag 6 is gradually increased, the pressure difference exists between the inner cavity and the outside of the air increasing bag 6 due to large volume and small pressure, and then the outside air is sucked back into the inner cavity of the air increasing bag 6, is exhausted into the inner cavity of the goods shelf bottom box 1 through the air outlet 8 and enters the inside of the evaporator 12 along with the air flow in the inner cavity of the goods shelf bottom box 1, so that no fan device is needed to be added, only a single motor group 4 and the fan blade 5 are utilized, and the existing motor group 4 and the fan blade 5, on the basis of the air quantity that can be absorbed by the air quantity, a certain ventilation quantity is increased for the inner cavity of the bottom box 1 of the goods shelf, so that the problem that the energy consumption of the refrigerated display cabinet is overlarge due to the fact that a plurality of groups of fans are arranged for increasing the air quantity in the prior art and the mechanical energy consumed by the rotation of the fans is doubled while the rotation noise of the fans is increased is solved.

Referring to fig. 1-2, the wind-increasing bag 6 is rectangular, the surface of the wind-increasing bag 6 is elastic, and the inner surface of the wind-increasing bag facing the shelf bottom case 1 is provided with a rigid plate.

Referring to fig. 1-2, the air outlets 8 are cylindrical and uniformly distributed on the inner surface of the shelf bottom box 1.

Referring to fig. 1-3, the noise reduction clamping plate 9 is fixedly installed on the inner side surface of the shelf bottom box 1, the noise reduction clamping plate 9 is hollow, and the surface of the noise reduction clamping plate 9 has thermal conductivity.

Referring to fig. 1-3, the blocking plate 10 is rectangular, the blocking plates 10 are inclined and are oppositely and alternatively arranged on the inner side surface of the noise reduction clamping plate 9, the blocking plate 10 has thermal conductivity, by arranging the blocking plate 10, when the fan blade 5 sucks the wind flow to enter the inner cavity of the rack bottom box 1, the wind flow velocity is fast, when the wind flow on the inner side surface of the rack bottom box 1 enters the inner cavity of the noise reduction clamping plate 9 through the ventilation opening 11, the wind flow flows to and fro and collide with each other up and down by utilizing the relative and alternative distribution of the blocking plate 10, the movement of the wind flow is continuously blocked, the wind flow energy is consumed by the collision, the wind speed is reduced, and therefore, the resonance noise generated by the high-speed wind flow and the inner side surface of the rack bottom box 1 is reduced, and the effective noise reduction effect is realized.

Meanwhile, when the wind current flows in the inner cavity of the noise reduction clamping plate 9 and continuously collides with the blocking plate 10, the wind current collides with the surface of the blocking plate 10, and the phenomenon of impact heat generation exists, namely, in the collision process of the object, the phenomenon inevitably aggravates the irregular thermal motion of the particle group due to the irregular thermal motion of the particles in the object and the uncertainty of the change of the motion state of the particles after collision, so that the kinetic energy is converted into heat energy, and further the surface of the blocking plate 10 continuously generates heat, and the wind current circulating in the air outlet 8 is heated by utilizing the heat conduction between the noise reduction clamping plate 9 and the blocking plate 10, so that the temperature of the gas circulating in the inner cavity of the shelf bottom box 1 is further improved, the temperature of the gas circulating in the inner cavity of the shelf bottom box 1 is ensured to be far higher than the temperature of the refrigerant in the inner cavity of the evaporator 12, the frosting degree of the surface of the evaporator 12 is effectively reduced, and the frosting period is shortened, the refrigeration and fresh-keeping effects of the refrigerated showcase are improved.

The using method of the invention has the following working principle:

when the refrigerated display cabinet needs to be used, the motor set 4 and the evaporator 12 are started, the motor set 4 drives the fan blades 5 to rotate rapidly, outside air is sucked reversely by the rotation of the fan blades 5, enters the inner cavity of the goods shelf bottom box 1 through the air inlet 2, and carries out cold and heat exchange on air flow through the evaporator 12 through the inner cavity of the goods shelf bottom box 1, so that cold air is generated for the refrigerated display cabinet.

When the fan blades 5 rotate, wherein the fan blades 5 with longer length rotate to the lower part, the inner sides of the bottom air increasing bags 6 are extruded, the air increasing bags 6 begin to downwards extrude the inner cavities of the fan blades, the volume of the air increasing bags 6 rapidly decreases, and the air is instantly exhausted, when the fan blades 5 continue to rotate, because the length values of the rest fan blades 5 are sequentially decreased progressively, the air increasing bags 6 initially extruded by the fan blades 5 begin to increase and recover, so that the external air is sucked back into the inner cavities of the air increasing bags 6, the sucked air is discharged into the inner cavities of the goods shelf bottom boxes 1 through the air outlets 8 and enters the evaporators 12 along with the air flow in the inner cavities of the goods shelf bottom boxes 1, and the effect of increasing a certain ventilation volume for the inner cavities of the goods shelf bottom boxes 1 is achieved.

When the wind current on the inner side surface of the goods shelf bottom box 1 enters the inner cavity of the noise reduction clamping plate 9 through the ventilation opening 11, the wind current collides with the surface of the blocking plate 10 when flowing by utilizing the relative staggered distribution of the blocking plate 10, so that the wind speed of the wind current is reduced, and the effective noise reduction effect is realized.

When the air current flows in the inner cavity of the noise reduction clamping plate 9 and continuously collides with the blocking plate 10, the surface of the blocking plate 10 generates a collision heat generation phenomenon, then certain heat energy is stored on the surface of the blocking plate 10, and the air current circulating inside the air outlet 8 is heated by utilizing the sequential heat conduction between the noise reduction clamping plate 9 and the blocking plate 10, so that the temperature of the gas circulating in the inner cavity of the shelf bottom box 1 is further improved, the surface frosting degree of the evaporator 12 is effectively reduced, the frosting period is shortened, and the refrigeration and preservation effects of the refrigerated display cabinet are improved.

When the refrigerated display cabinet is not needed, the motor set 4 and the evaporator 12 are closed.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a refrigerated display case is with air supply arrangement that makes an uproar that falls, includes goods shelves under casing (1), its characterized in that: an air inlet (2) is formed in the top of one side of the goods shelf bottom box (1), an air supply duct (3) is formed in the other side of the goods shelf bottom box (1), a motor set (4) is movably mounted in an inner cavity of the goods shelf bottom box (1), a fan blade (5) is fixedly mounted at one end of the motor set (4), air increasing bags (6) located at the upper end and the lower end of the goods shelf bottom box (1) are fixedly mounted outside the fan blade (5), an air increasing opening (7) is formed in one side of each air increasing bag (6), an air outlet (8) located on the inner side of the goods shelf bottom box (1) is fixedly mounted on one side of each air increasing bag (6), a noise reducing clamp plate (9) is fixedly mounted on the outer portion of each air outlet (8), a barrier plate (10) is fixedly mounted on the inner side of each noise reducing clamp plate (9), and a vent (11) is formed in the surface of one end of each noise reducing clamp plate (9), an evaporator (12) positioned at one end of the air increasing bag (6) is fixedly arranged in the inner cavity of the shelf bottom box (1).

2. The noise-reducing air supply device for the refrigerated showcase as set forth in claim 1, wherein: the length values of the seven fan blades (5) positioned on one side of the fan blades (5) are sequentially increased by taking a circle center vertical line of the motor group (4) as a boundary line, the maximum length value of the combination of the seven fan blades (5) is a vertical distance value from the bottom end of the motor group (4) to the bottom end of the air increasing bag (6), the minimum length value of the combination of the seven fan blades is a vertical distance value from the top end of the motor group (4) to the inner side surface of the shelf bottom box (1), the circle center vertical line of the motor group (4) is a boundary line, the length values of the five fan blades (5) positioned on the other side of the combination of the five fan blades are equal, and the length values of the five fan blades are equal to the vertical distance value from the top end of the motor group (4) to the inner side surface of the shelf bottom box (1).

3. The noise-reducing air supply device for the refrigerated showcase as set forth in claim 1, wherein: the shape of the air increasing bag (6) is rectangular, the surface of the air increasing bag (6) is elastic, and a hard plate is arranged on the surface of the inner side of the air increasing bag, which faces the goods shelf bottom box (1).

4. The noise-reducing air supply device for the refrigerated showcase as set forth in claim 1, wherein: the air outlet (8) is cylindrical and is uniformly distributed on the inner side surface of the goods shelf bottom box (1).

5. The noise-reducing air supply device for the refrigerated showcase as set forth in claim 1, wherein: the utility model discloses a shelf bottom box, including the shelf bottom box, fall and make an uproar splint (9) fixed mounting fall the inboard surface of shelf bottom box (1), and fall the inside of falling the splint (9) and be cavity, the surface of falling the splint (9) of making an uproar has the heat conductivity.

6. The noise-reducing air supply device for the refrigerated showcase as set forth in claim 1, wherein: the blocking plate (10) is rectangular, the blocking plate (10) is inclined, the blocking plate is oppositely and crossly distributed on the inner side surface of the noise reduction clamping plate (9), and the blocking plate (10) has thermal conductivity.

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