CN214371223U

CN214371223U - Back defrosting structure of evaporator for food refrigerator

Info

Publication number: CN214371223U
Application number: CN202022656941.4U
Authority: CN
Inventors: 尹保玉; 徐叶; 王俊
Original assignee: Shanghai Highly Nakano Refrigeration Co Ltd
Current assignee: Shanghai Highly Nakano Refrigeration Co Ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-10-08
Anticipated expiration: 2030-11-17

Abstract

The utility model relates to a back defrosting structure of evaporator for food refrigerated cabinet, which comprises an evaporator component (B) and a fan (2), wherein the evaporator component (B) is arranged at the middle upper part of a vertical channel of a main air duct (4) formed by the rear wall of a cabinet body (B) and a partition plate (3) in the inner cavity of the cabinet body, and the fan (2) is arranged at the corner where the upper part of the main air duct is connected with a channel of an air outlet (5) of the cabinet body, thus forming a suction type external air discharge and supply structure; and meanwhile, a drainage and flow guide mechanism (C) is arranged at the bottom of the vertical channel of the main air duct (4), and condensed water generated in defrosting of the evaporator assembly (A) is collected and directly discharged out of the main air duct of the cabinet body (A). Because the evaporator assembly is arranged in the vertical channel of the main air duct, the bottom of the inner cavity of the display cabinet can be further lowered, and the display space is expanded; the evaporator assembly is arranged in the vertical channel of the main air duct, so that the phenomenon of frosting in the cabinet generated when the bottom evaporator works can be effectively reduced or eliminated, and the effect of improving the energy efficiency of the whole machine is achieved.

Description

Back defrosting structure of evaporator for food refrigerator

Technical Field

The utility model relates to a food cold storage cabinet defrosting technology, especially a defrosting structure at the back of evaporimeter that food cold storage cabinet was used belongs to the cold technical field of food.

Background

Food refrigerated merchandisers are commonly used in supermarkets for refrigerated display of food products, and two major types are often used in this type of refrigerated display cabinet: flat cabinets and vertical cabinets. The vertical showcase is characterized in that an evaporator arranged in the inner cavity of a base at the lower part of a showcase body generates refrigerating air, and then the refrigerating air is blown to an air outlet at the upper part of the showcase body from bottom to top along with a main air duct formed by the rear wall of the showcase body of the food refrigerated showcase and an inner cavity partition plate or an air supply micropore on the inner cavity partition plate enters the inner cavity of the showcase provided with a shelf plate by wind power generated by a fan arranged in the same horizontal air duct with the evaporator, so that food in the inner cavity of the showcase body is refrigerated and kept fresh.

However, the conventional refrigeration structure has been proved to have certain defects due to the fact that the fan and the evaporator are arranged in the horizontal air duct at the lower part of the main air duct for years:

firstly, the refrigeration component is arranged at the bottom of the cabinet body, so that the utilization rate of the internal space of the cabinet body is limited, and the display effect of the display cabinet is limited;

secondly, when the bottom-mounted evaporator is defrosted, because the water vapor can reach the inner cavity of the cabinet body through the air return opening, the top plate in the cabinet and the lower part of the goods shelf are gradually frosted, and if goods in the cabinet do not flow for sale, the frosting phenomenon can also occur on the surfaces of the goods; therefore, the energy consumption of the food showcase using such a structure is relatively high.

In order to reduce energy consumption, the internal volume of various vertical food display cabinets is further increased, and the design is changed to become a shell which is necessary to be solved by technicians of manufacturers.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose of the invention: the back defrosting structure of the evaporator for the food refrigerator is provided, which can overcome the defects of the existing underlying evaporator in use and expand the internal space of the food refrigerator.

This kind of back defrosting structure of evaporimeter that food cold cupboard was used comprises evaporimeter subassembly B, fan 2, its characterized in that: the evaporator component B is arranged at the middle upper part of a vertical channel of a main air duct 4 formed by the rear wall of the cabinet body A and a partition plate 3 in the inner cavity of the cabinet body, and the fan 2 is arranged at the corner where the upper part of the main air duct is connected with a channel of an air outlet 5 of the cabinet body, so that a suction type outward-discharging air supply structure is formed; and meanwhile, a drainage guide mechanism C is arranged at the bottom of the vertical channel of the main air duct 4, and condensed water generated during defrosting of the evaporator assembly B is collected and directly discharged out of the main air duct of the cabinet body A.

Further, evaporator assembly B constitute by evaporimeter 6, U type heating pipe 7 and evaporimeter bottom plate 8, evaporimeter 6 through set up at the heat insulating mattress 9 of its one side with form the inner chamber division board 3 butt of main wind channel 4, its opposite side then through the fixed heating structure who constitutes the evaporimeter of evaporimeter bottom plate 8 and cabinet body rear bottom plate.

Furthermore, the drainage guide mechanism C is composed of a drainage guide plate 10 arranged at the bottom of the vertical main air duct 4 at the lower part of the evaporator component B, a guide plate support seat 11 and a drainage pipe 12 arranged in the horizontal main air duct 4, and a heating pipe 13 is arranged at the joint part of the drainage guide plate 10 and the guide plate support seat 11.

According to the technical scheme, when the back defrosting structure of the evaporator for the food refrigerated cabinet is applied to the vertical food showcase which is commonly used at present, compared with the food refrigerated showcase which is commonly arranged at the bottom of the evaporator at present, the back defrosting structure has the following advantages:

firstly, as the evaporator assembly is arranged in the vertical channel of the main air duct, the bottom of the inner cavity of the display cabinet can be further lowered, and the display space is expanded;

secondly, the evaporator assembly is arranged in the vertical channel of the main air duct, so that the phenomenon of frosting in the cabinet generated when the bottom evaporator works can be effectively reduced or eliminated, and the effect of improving the energy efficiency of the whole machine is achieved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the evaporator assembly A;

FIG. 3 is a schematic view of the combination of an evaporator and a U-shaped heating tube;

fig. 4 is a schematic structural view of the drainage guide mechanism C.

In the figure:

1-air outlet; 2-a fan; 3-inner cavity isolation board; 4-a main air duct; 5-air outlet of the cabinet body; 6-an evaporator; 7-U-shaped heating pipes; 8-evaporator floor; 9-a heat insulation pad; 10-drainage guide plate; 11-a deflector support seat; 12-a drain pipe; 13-heating the tube; a-a cabinet body; b-an evaporator assembly; c-a drainage diversion mechanism.

Detailed Description

The invention is further described and embodiments of the invention are given below with reference to the accompanying drawings.

The back defrosting structure of the evaporator for the food refrigerated cabinet as shown in the attached figure 1 is an inventive arrangement mode of an evaporator assembly in a vertical food refrigerated display cabinet with a bottom-mounted evaporator which is commonly used at present.

This kind of back defrosting structure of evaporimeter that food cold cupboard was used comprises evaporimeter subassembly B, fan 2, its characterized in that: the evaporator component B is arranged at the middle upper part of a vertical channel of a main air duct 4 formed by the rear wall of the cabinet body A and a partition plate 3 in the inner cavity of the cabinet body, and the fan 2 is arranged at the corner where the upper part of the main air duct is connected with a channel of an air outlet 5 of the cabinet body, so that a suction type outward-discharging air supply structure is formed; and meanwhile, a drainage guide mechanism C is arranged at the bottom of the vertical channel of the main air duct 4, and condensed water generated during defrosting of the evaporator assembly B is collected and directly discharged out of the main air duct of the cabinet body B.

Fig. 2 and 3 show a detailed structure of an evaporator assembly B suitable for use in a vertical refrigerated display case. Evaporator assembly B constitute by evaporimeter 6, U type heating pipe 7 and evaporimeter bottom plate 8, evaporimeter 6 through set up at the heat insulating mattress 9 of its one side with form the 3 butt of inner chamber division boards of main wind channel 4, its opposite side then through the fixed heating structure who constitutes the evaporimeter of evaporimeter bottom plate 8 and cabinet body rear bottom plate.

Fig. 4 is a schematic structural diagram of a drainage guide mechanism C matched with the evaporator assembly B and arranged below the air duct 4 at the lower part of the evaporator assembly B. The drainage guide mechanism C is composed of a drainage guide plate 10 arranged at the bottom of a vertical main air channel 4 arranged at the lower part of the evaporator component B, a guide plate supporting seat 11 and a drainage pipe 12 arranged in a horizontal main air channel, and a heating pipe 13 is arranged at the joint part of the drainage guide plate 10 and the guide plate supporting seat 11.

The back defrosting structure of the evaporator for the food refrigerator has the following working principle:

when the showcase is in operation, the refrigerating airflow generated by the evaporator 6 in the evaporator assembly B with the back defrosting is pumped by the fan 2, and the low-temperature air is sent to the inner cavity of the showcase from the upper part to the lower part through the air outlet 1 at the upper part of the showcase, so that the food placed on the goods shelf in the inner cavity of the showcase is in an ideal low-temperature environment. When the evaporator 6 generates frost after working for a period of time, the evaporator 6 enters a defrosting state under the action of the U-shaped heating pipe 7 arranged between the evaporator 6 and the evaporator bottom plate 9; because the heat energy generated by the U-shaped heating pipe 7 can be transmitted to the upper half part of the evaporator 6, the evaporator can realize defrosting in a shorter time than the traditional bottom evaporator. Just because the defrosting time is shortened, the influence on the change of the temperature in the whole cabinet is correspondingly reduced, and the whole energy consumption of the cabinet body is reduced.

Meanwhile, when the evaporator 6 is in defrosting operation, water drops generated when the evaporator is defrosted fall into the inner cavity of the main air duct to form ice due to the fact that the inner cavity of the cabinet body is in a low-temperature state (when the temperature in the cabinet in the low-temperature freezer is kept at minus 20 ℃). Therefore, a drainage guide mechanism C as shown in fig. 4 is provided in the main air duct 4, so that the dripping water drops drop onto the drainage guide plate 10, and the collected water flows into the drainage pipe 12 provided in the horizontal main air duct by the guidance of the drainage guide plate 10. In order to prevent the water droplets dripping onto the drainage baffle 10 from condensing into ice, this water droplet condensation into ice is eliminated by the action of the heating pipe 12 provided in this design between the drainage baffle 10 and the baffle support 11.

According to the applicant, the ideal use effect can be achieved when the air curtain type food refrigeration showcase is used on various vertical showcases such as a glass sliding door type food refrigeration showcase and an air curtain type food refrigeration showcase.

The above embodiments are only general embodiments of the present invention given by the applicant according to the technical solutions, and any modifications that are not essential to the ordinary skilled person in the industry, made by referring to the technical solutions, should be regarded as belonging to the protection scope of the present invention.

Claims

1. The utility model provides a back defrosting structure of evaporimeter that food cold cupboard was used, comprises evaporimeter subassembly (B), fan (2), its characterized in that: an evaporator assembly (B) is arranged at the middle upper part of a vertical channel of a main air duct (4) formed by the rear wall of a cabinet body (A) and a partition plate (3) of an inner cavity of the cabinet body, and a fan (2) is arranged at a corner where the upper part of the main air duct is connected with a channel of an air outlet (5) of the cabinet body, so that a suction type outward-discharging air supply structure is formed; and meanwhile, a drainage and flow guide mechanism (C) is arranged at the bottom of the vertical channel of the main air duct (4), and condensed water generated in defrosting of the evaporator assembly (B) is collected and directly discharged out of the main air duct of the cabinet body (A).

2. The back defrosting structure of an evaporator for a food chiller as set forth in claim 1, wherein: evaporator assembly (B) constitute by evaporimeter (6), U type heating pipe (7) and evaporimeter bottom plate (8), evaporimeter (6) through setting up heat insulating mattress (9) and inner chamber division board (3) butt that form main air duct (4) in its one side, its opposite side then passes through evaporimeter bottom plate (8) and the fixed heating structure who constitutes the evaporimeter of cabinet body rear bottom plate.

3. The back defrosting structure of an evaporator for a food chiller as set forth in claim 1, wherein: the drainage guide mechanism (C) is composed of a drainage guide plate (10) arranged at the bottom of a vertical main air duct (4) at the lower part of the evaporator component (B), a guide plate supporting seat (11) and a drainage pipe (12) arranged in a horizontal main air duct, and a heating pipe (13) is arranged at the joint part of the drainage guide plate (10) and the guide plate supporting seat (11).