CN204438630U - A kind of energy-saving vertical transparent doors household freezer - Google Patents

Abstract

The utility model discloses an energy-saving vertical transparent door freezer, which belongs to the technical field of refrigeration equipment, and includes a compressor, a condenser, a capillary tube and an evaporator, and a box shell, which is provided with an inner tank. A filling layer is provided between the box shell and the liner, an electrically heated glass door is provided on one side of the box shell, a protective structure is provided on the top of the box shell, and a measuring box is provided inside the protective structure. A temperature and humidity collector for external temperature and humidity, a temperature sensor for measuring the temperature in the box is installed inside the inner tank, and a fan and a controller are also installed inside the inner tank. In the case of ensuring that the outer surface of the door does not condense, the utility model can open the electric heating glass door at least, and through the reasonable start and stop of the circulation fan in the intelligent control box, the cooling capacity in the evaporator can be fully circulated to the inside of the box. , reduce the loss of cooling capacity, increase the start-stop ratio of the compressor, and reduce the energy consumption of the product.

Description

An energy-saving vertical transparent door freezer

technical field

The utility model belongs to the technical field of refrigeration equipment, in particular to an energy-saving vertical transparent door freezer.

Background technique

With the continuous advancement of technology, the energy consumption is also increasing. This requires us to consider not only the reliable quality and low cost of the product when designing products, but also the smaller the energy consumption while ensuring the basic functions.

For vertical transparent door freezers, in order to promote the promotion of products in the box, hollow glass doors are usually used. At this time, because the thermal insulation coefficient of the glass door itself is far lower than that of the foam door body, the cooling loss in the box is serious. This type of product adopts a larger refrigeration system to offset the cooling loss. In addition, the outside of the glass door also has serious condensation on the outer surface of the glass due to the low surface temperature. The usual solution is to use three layers of hollow (or vacuum) glass, the outermost layer of glass is electrically heated, and the temperature of the glass surface is increased by heating the glass surface to solve the condensation on the outer surface of the glass and enhance the display and publicity effect of the product. But at the same time, the heat is transferred to the box layer by layer, which increases the heat load of the product. For these reasons, the power consumption of this type of product is much higher than that of a bedroom freezer of the same volume. If the electric heating function of the glass door is turned on, the power consumption of the product will be greatly improved, but if the electric heating function of the glass door is turned off, the surface of the glass door will condense, which will not be able to achieve the effect of publicity.

At present, the more effective solution to the condensation on the glass door is to use electric heating on the glass door as mentioned above, and to use vacuum glass to improve the thermal insulation coefficient of the glass door and indirectly increase the temperature of the outer surface of the glass door. The cost of the solution is too high, and there is no cost-effective advantage, and it is difficult to control the quality of vacuum glass put into mass production, resulting in a large increase in cost, which is difficult for customers to bear.

In addition, the circulation fan in the box of this type of product starts and stops with the compressor. When the compressor is just started, the rotation of the fan will increase the load on the compressor, and the power of the compressor will increase, which is manifested as an increase in power consumption. When the compressor is turned off, the fan also stops immediately. At this time, the evaporator in the box actually still has a lower temperature and more cooling capacity. The fan stops rotating so that the cooling capacity of the refrigerant will gradually flow into the box with the refrigeration pipeline. In addition, unnecessary energy loss is caused.

Utility model content

Aiming at the above-mentioned technical problems in the prior art, the utility model proposes an energy-saving vertical transparent door freezer, which has a reasonable design, overcomes the deficiencies of the prior art, is easy to maintain, saves energy, and has a good effect.

In order to achieve the above object, the utility model adopts the following technical solutions:

An energy-saving vertical transparent door freezer, including a compressor, a condenser, a capillary tube and an evaporator, and a box shell, an inner tank is arranged inside the box shell, and an inner tank is arranged between the box shell and the inner tank. There is a filling layer, an electrically heated glass door is provided on one side of the box shell, a protective structure is provided on the top of the box shell, and a temperature and humidity collector for measuring the temperature and humidity outside the box is installed inside the protective structure. The interior of the liner is provided with a temperature sensor for measuring the temperature in the box. The interior of the liner is also provided with a fan and a controller. The controller is connected to the temperature and humidity collector, temperature sensor, compressor, and fan through wires.

Preferably, the protective structure adopts a hinged cover, and the hinged cover is provided with ventilation holes connecting to the outside world.

Preferably, heating wires are provided on the surface of the electrically heated glass door.

Preferably, a shelf is also provided inside the liner.

Beneficial technical effects brought by the utility model:

The utility model proposes an energy-saving vertical transparent door freezer. Compared with the prior art, the utility model is applied to a vertical freezer with an electrically heated glass door on the one hand, and the sensor collects the temperature and humidity of the outside environment of the box. As well as the temperature inside the box, calculate the reasonable opening and closing ratio of the electric heating glass door according to the condensation temperature of the water in the air. In the case of ensuring that the outer surface of the door does not condense, open the electric heating glass door at least to reduce the temperature of the glass door. The energy consumption and the influence on the temperature inside the box reduce the power consumption of the product as a whole.

On the other hand, the utility model can fully circulate the cold energy in the evaporator to the inside of the box by intelligently controlling the reasonable start and stop of the circulating fan in the box, reducing the loss of cold energy along with the pipeline, and increasing the compressor's cooling capacity. The start-stop ratio reduces the energy consumption of the product.

Description of drawings

Fig. 1 is a structural schematic diagram of an energy-saving vertical transparent door freezer of the present invention.

Among them, 1-box shell; 2-filling layer; 3-inner tank; 4-compressor; 5-shelf; 6-electrically heated glass door; 7-protective structure; 8-temperature and humidity collector; 9-control device; 10-fan; 11-temperature sensor.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

As shown in Figure 1, a kind of energy-saving vertical transparent door freezer, comprises compressor 4, condenser, capillary and evaporator, also comprises box shell 1, is provided with liner 3 in the box shell, described A filling layer 2 is provided between the box shell 1 and the liner 3, an electrically heated glass door 6 is provided on one side of the box shell 1, and a protective structure 7 is provided on the top of the box shell 1, and the protective structure 7 A temperature and humidity collector 8 for measuring the temperature and humidity outside the box is provided inside, a temperature sensor 11 for measuring the temperature inside the box is provided inside the inner tank 3, a fan 10 and a controller 9 are also provided inside the inner tank 3, The controller 9 is respectively connected with the temperature and humidity collector 8, the temperature sensor 11, the compressor 4, and the fan 10 through wires. The protective structure 7 adopts a hinged cover, and the hinged cover is provided with ventilation holes connecting to the outside world. Heating wires are printed on the surface of the electrically heated glass door 6 . A shelf 5 is also provided inside the liner 3 .

During use, the temperature sensor 11 measures the temperature inside the box, and the temperature and humidity collector 8 measures the temperature and humidity outside the box. The controller 9 sends a control signal according to the data collected by the temperature sensor 11 and the temperature and humidity collector 8, and sends an energization signal and energization voltage to the electrically heated glass door 6 to control the surface temperature of the heating wire on the electrically heated glass door 6 , so that the surface temperature of the heating wire on the electrically heated glass door 6 is higher than the condensation temperature of the moisture in the air, so that the moisture in the air is difficult to condense on the outer surface of the electrically heated glass door 6 to achieve a better publicity effect.

In addition, according to the user's actual set temperature, as well as the collected ambient temperature and humidity, the on-off operation status of the fan 10 is reasonably controlled to further reduce the loss of cooling capacity, thereby achieving the purpose of energy saving. The specific control scheme is as follows: when the internal temperature of the cabinet is higher than the temperature set by the user, the system requires to start cooling, the controller 9 sends a signal to control the compressor 4 to start, and after starting for a period of time (the time range is 1 to 2 minutes), when When the internal evaporator of the whole product has a lower temperature (the lower temperature range is -21 to -23° C.), the controller 9 sends a signal to require the fan 10 to start and rotate. When the temperature in the box measured by the temperature sensor 11 is When the shutdown temperature is reached, the controller 9 sends a signal to control the compressor 4 to shut down, and the controller 9 controls the blower fan 10 to run at a low speed (the low speed range is 1200～1400 rpm) and runs for a period of time (the time range is 1.5～1000 rpm). 2min) and then stop. At this time, the controller 9 real-time monitors the rising situation of the temperature in the box, and calculates the time proportional differential value of the temperature in the box and the shutdown temperature difference by the program, which is used to judge the rising trend of the temperature in the box, and compares the time proportional differential value with the controller 9. The internal setting value (the setting value is a relatively reasonable value calculated in the laboratory, which can truly reflect the temperature rise trend in the reaction box. It is tested multiple times at different stages of ambient temperature and humidity. In the recovery stage of the temperature in the box after shutdown, a relatively stable time proportional differential value (time proportional differential value) obtained by comprehensively comparing the difference between the temperature in the box and the shutdown temperature) is compared. If the time proportional differential value is less than the set value, it indicates that the rising trend of the temperature in the box is relatively reasonable and normal, and the controller 9 does not take any action, and continues to detect the rising trend of the temperature in the box; if the time proportional differential value is greater than the set value, it indicates that The rising trend of the temperature inside the box is accelerated. At this time, the fan 10 is turned on, and the fan 10 operates in a low-speed mode to exchange the excess cooling capacity in the evaporator into the box again, prolonging the temperature recovery time in the box. When the temperature in the case increased to the start-up temperature, the controller 9 controlled the compressor 4 to turn on the power, and controlled the blower fan 10 to cut off the power and stop rotating. When the lowest temperature range is at -21～-23°C), the controller 9 sends a signal to require the blower fan 10 to start and rotate, and the cycle repeats. This kind of control logic will prolong the downtime of the compressor, increase the start-stop ratio of the product, and reduce the energy consumption of the product. For the running program of the controller 9, those skilled in the art can use existing programs in the prior art.

Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above-mentioned examples, and changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the present utility model are also acceptable. Should belong to the protection scope of the present utility model.

Claims (4)

1. An energy-saving vertical transparent door freezer, comprising a compressor, a condenser, a capillary tube and an evaporator, is characterized in that: it also includes a box shell, an inner container is provided in the box shell, and the box shell There is a filling layer between the box shell and the inner tank, an electric heating glass door is set on one side of the box shell, a protective structure is set on the top of the box shell, and a temperature sensor for measuring the temperature and humidity outside the box is installed inside the protective structure. Humidity collector, the inside of the inner tank is provided with a temperature sensor for measuring the temperature in the box, the inner tank is also provided with a fan and a controller, and the controller is respectively connected with the temperature and humidity collector, temperature sensor, compressor, The fans are connected by wires. 2. An energy-saving vertical transparent door freezer according to claim 1, characterized in that: the protective structure adopts a hinged cover, and the hinged cover is provided with ventilation holes connecting to the outside world. 3. The energy-saving vertical transparent door freezer according to claim 1, wherein a heating wire is provided on the surface of the electrically heated glass door. 4. An energy-saving vertical transparent door freezer according to claim 1, wherein a shelf is also provided inside the inner container.