CN219607487U - Energy-storage energy-saving defrosting system and refrigerator - Google Patents

Abstract

The utility model discloses an energy-storage type energy-saving defrosting system and a refrigerator, and aims to solve the technical problem that the existing refrigerator is low in cold energy stored in the refrigerator so as to influence the preservation of foods in a storage bin. The energy-storage type energy-saving defrosting system mainly comprises a compressor, a condenser, a first evaporator, a second evaporator and a cold accumulation device, wherein the condenser is connected with a throttling device, the throttling device is respectively connected with the first evaporator and the cold accumulation device through a split tee joint, the cold accumulation device is connected with the second evaporator, the first evaporator and the second evaporator are connected in parallel, and the second evaporator and the cold accumulation device are connected in series; the compressor is externally wrapped with a heat storage device, and the heat storage device is connected with a water tank through a gravity heat pipe. According to the utility model, the first evaporator and the second evaporator are arranged in parallel, and the second evaporator and the cold accumulation device are arranged in series, so that the temperature environments of the freezing chamber and the cold accumulation chamber can be distinguished, and the purposes of energy conservation and fresh preservation are achieved.

Description

Energy-storage energy-saving defrosting system and refrigerator

technical field

The application relates to the technical field of refrigerator refrigeration, in particular to an energy-storage energy-saving defrosting system and a refrigerator.

Background technique

Refrigerators have become a must-have for most families in modern life. But its defrosting problem has always been a hot spot in the refrigeration industry. When the temperature of the evaporator in the refrigerator is lower than the dew point of the air in the box, the water vapor in the refrigerator will condense and frost on the surface of the evaporator. On the one hand, frosting reduces the fluid area of the air, increases the flow resistance, and reduces the heat transfer capacity of the evaporator; on the other hand, it increases the heat transfer resistance between the fin surface of the evaporator and the air, reducing its cooling performance.

An energy storage type air-cooled frost-free refrigerator known to the inventor and its defrosting method (patent document number is CN210980490U), wherein the disclosed refrigerator includes a refrigerator shell, a storage room, a phase change energy storage cold storage module, an air supply channel, Evaporation chamber, air return channel, air-cooled evaporator, air blower, compressor, air-cooled condenser, throttling device, condensing fan, energy storage heat pipe defrosting module, defrosting water pipe and water receiving tray; outlet of air supply channel The air end communicates with the air supply port of the storage room, and the air inlet end communicates with the evaporation chamber, and a first electric air valve is arranged at the air inlet end; the return air channel is arranged between the evaporation room and the storage room, and one end of the return air channel is connected The air outlet section of the evaporation chamber is connected, and a second electric air valve is provided at the connection point, the other end is connected with the air inlet section of the evaporation chamber, and the middle is connected with the air return port of the storage room; the air-cooled evaporator and the blower are located in the evaporation chamber, The air-cooled evaporator, compressor, air-cooled condenser and throttling device are connected in series through refrigerant pipes to form a refrigeration cycle.

However, in the process of implementing the technical solutions in the embodiments of the present application, the inventors of the present application found that the above-mentioned technology has at least the following technical problems:

1. Since the phase change energy storage and cold storage module is installed on the back plate of the refrigerator shell, what it absorbs is the cold energy sent by the evaporator into the cold air flow in the storage room, resulting in the cold energy stored in the phase change energy storage and cold storage module The amount is low, and it will also affect the freezing and preservation of the food stored in the storage room.

2. There is no exact division of the freezer compartment and the fresh-keeping compartment of the refrigerator, and there is no exact distinction between the amount of cold delivered, resulting in the failure of the heat storage module to fully exert its energy-saving function, and the heat in the condensed water after defrosting cannot be fully utilized , resulting in a waste of resources.

The information disclosed in this background section is only for deepening the understanding of the background technology of the present disclosure, and should not be regarded as an acknowledgment or in any form to imply that the information constitutes the prior art known to those skilled in the art.

Contents of the invention

The inventor found through research that: in the existing refrigerator, because the phase change energy storage and cold storage module is installed on the back plate of the refrigerator shell, the stored cold capacity is low, which affects the freshness of the food stored in the storage room. In this way, the first evaporator and the second evaporator are connected in parallel, and the second evaporator is connected in series with the cold storage device, which can effectively increase the stored cold capacity, thereby ensuring the freshness of the food.

In view of at least one of the above technical problems, the present disclosure provides an energy-storage energy-saving defrosting system and a refrigerator. By setting the first evaporator and the second evaporator in parallel, the second evaporator and the cold storage The devices are arranged in series, so that the cooling capacity of the gas in the refrigerating room is lower than that in the freezing room, and the temperature environment of the freezing room and the refrigerating room can be distinguished, thereby achieving the purpose of energy saving and fresh keeping.

According to one aspect of the present disclosure, there is provided an energy storage energy-saving defrosting system, including a compressor, a condenser, a first evaporator, a second evaporator and a cold storage device, the condenser is connected with a throttling device, the The throttling device is respectively connected to the first evaporator and the cold storage device through a diverter tee, and the cold storage device is connected to the second evaporator so that the first evaporator and the second evaporator are arranged in parallel, and the second evaporator The evaporator and the cold storage device are arranged in series;

The compressor is wrapped with a heat storage device, and the heat storage device is connected to a water tank through a gravity heat pipe.

In some embodiments of the present disclosure, a water receiving tray is arranged above the water tank, and a first electromagnetic valve is arranged between the water receiving tray and the water tank.

In some embodiments of the present disclosure, the water tank is connected with an air storage tank, the air storage tank is provided with a steam outlet, and a second solenoid valve is provided at the steam outlet.

In some embodiments of the present disclosure, the first evaporator is connected with a first air blower, and the second evaporator is connected with a second air blower.

In some embodiments of the present disclosure, the first evaporator and the second evaporator are connected to the compressor through a junction tee, so that the refrigerant in the condenser enters the compressor.

In some embodiments of the present disclosure, the thermal storage device includes at least one thermal insulation material layer, and the phase transition temperature of the thermal storage material used in the thermal insulation material layer is 30-50°C.

In some embodiments of the present disclosure, the gravity heat pipe includes a condensing section, an adiabatic section and an evaporating section, which are one-way thermal diodes that can only transfer heat from the condensing section to the evaporating section.

According to another aspect of the present disclosure, there is provided an energy-storage energy-saving refrigerator, which mainly includes the above-mentioned energy-storage energy-saving defrosting system; the first evaporator is connected to the air outlet of the freezing chamber, and the second evaporator is connected to The air supply port of the refrigerator;

A first electric air valve is provided at the air supply port of the freezer compartment, a second electric air valve is provided at the air supply port of the refrigerator compartment, and a third electric air valve is provided between the first evaporator and the second evaporator , the freezer is provided with a gas discharge port, and a fourth electric damper is provided at the gas discharge port.

In some embodiments of the present disclosure, the outside of the refrigerator casing is wrapped with heat-insulating materials to prevent heat loss;

The freezing compartment and the refrigerating compartment are respectively wrapped with a first cold storage material and a second cold storage material.

In some embodiments of the present disclosure, the phase transition temperature of the first cold storage material is -18°C to -12°C;

The phase transition temperature of the second cold storage material is 0-10°C.

One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

1. In this application, the first evaporator and the second evaporator are arranged in parallel, the second evaporator is arranged in series with the cold storage device, and the refrigerator compartment and the freezer compartment are distinguished, so that the first evaporator communicates In the freezing room, the second evaporator is connected to the cold room, so that the cooling capacity of the gas in the cold room is lower than that in the freezing room, and the temperature environment of the freezing room and the cold room can be distinguished, thereby achieving the purpose of saving energy and keeping fresh.

2. The compressor described in this application is wrapped with a heat storage device, and the heat storage device is connected to a water tank through a gravity heat pipe, which can enhance heat exchange between the compressor and the condenser, and reduce the heat dissipation of the condenser and the compressor pressure, and then realize the heat preservation effect, prevent the loss of excess heat, and help save resources, save energy and reduce consumption.

Description of drawings

FIG. 1 is a schematic diagram of the structure and principle of a defrosting system in an embodiment of the present application.

Fig. 2 is a schematic diagram of the structure and principle of the system cycle in cooling mode in an embodiment of the present application.

FIG. 3 is a schematic diagram of the principle of air flow in cooling mode in an embodiment of the present application.

FIG. 4 is a schematic diagram of the principle of air flow in a defrosting mode according to an embodiment of the present application.

In the above figures, 1 is the first evaporator, 2 is the second evaporator, 3 is the water tray, 4 is the first solenoid valve, 5 is the water tank, 6 is the heat conduction plate, 7 is the condenser, 8 is the compressor , 9 is a heat storage device, 10 is a gravity heat pipe, 11 is an air storage tank, 12 is a second solenoid valve, 13 is a steam outlet, 14 is a second blower, 15 is a first blower, 16 is a throttling device, 17 is 18 is the freezer, 19 is the air outlet of the freezer, 20 is the freezer, 21 is the air supply of the freezer, 22 is the cold storage device, 23 is the freezer air supply, 24 is the refrigerator shell, and 25 is the second motor Air valve, 26 is the first electric air valve, 27 is the third electric air valve, and 28 is the fourth electric air valve.

Detailed ways

In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " Outside", "vertical", "horizontal", "clockwise", "counterclockwise" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description , rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the application. The "first", "second", etc. mentioned in this application are used to distinguish the described objects, without any sequence or technical meaning. The "connection" and "connection" mentioned in this application include direct and indirect connection (connection) unless otherwise specified.

The unit modules (components, structures, mechanisms) or sensors and other devices involved in the following embodiments are conventional commercially available products unless otherwise specified.

The embodiment of the present application provides an energy-storage energy-saving defrosting system, which solves the technical problem that the low cooling capacity stored in the existing refrigerator affects the freshness of the food stored in the storage room, so that the first evaporation The second evaporator is arranged in parallel with the second evaporator, and the second evaporator is arranged in series with the cold storage device, which can effectively increase the stored cold capacity.

The technical solution in the embodiment of the present application is to solve the above-mentioned problem of waste of resources caused by the low stored cooling capacity. The general idea is as follows: the condenser is connected with a throttle device, and the throttle device is connected to the first An evaporator and a cold storage device, the cold storage device is connected to the second evaporator, so that the first evaporator and the second evaporator are arranged in parallel, and the second evaporator is arranged in series with the cold storage device; the compressor The exterior is wrapped with a heat storage device, and the heat storage device is connected to a water tank through a gravity heat pipe.

The first evaporator is arranged in parallel with the second evaporator, the second evaporator is arranged in series with the cold storage device, and the refrigerator compartment and the freezer compartment are distinguished, so that the first evaporator communicates with the freezer compartment, so that The second evaporator is connected to the refrigerating room, so that the cooling capacity of the gas in the refrigerating room is lower than that in the freezing room, so that the temperature environments of the freezing room and the refrigerating room can be distinguished, thereby achieving the purpose of energy saving and preservation.

In order to better understand the technical solution of the present application, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

Embodiment one

This example discloses an energy-storage energy-saving defrosting system, as shown in Figure 1, which mainly includes a compressor 8, a condenser 7, a first evaporator 1, a second evaporator 2 and a cold storage device 22, and the condenser 7 is connected with A throttling device 16, the throttling device 16 is respectively connected to the first evaporator 1 and the cold storage device 22 through a diverter tee, and the cold storage device 22 is connected to the second evaporator 2, so that the first evaporator 1 is set in parallel with the second evaporator 2, and the second evaporator 2 is set in series with the cold storage device 22; the first evaporator 1 and the second evaporator 2 are connected to the compressor 8 through a confluence tee, so that The refrigerant in the condenser 7 enters the compressor 8 . By setting the first evaporator 1 and the second evaporator 2 in parallel, the second evaporator 2 is arranged in series with the cold storage device 22, and distinguishing the refrigerating room 20 and the freezing room 18, so that the first evaporator The second evaporator 1 communicates with the freezer 18, and the second evaporator 2 communicates with the freezer 20, so that the cooling capacity of the gas in the freezer 20 is lower than that of the freezer 18, and the temperature environment of the freezer 18 and the freezer 20 can be adjusted. Out of the distinction, so as to achieve the purpose of energy saving and preservation.

In addition, the compressor 8 is wrapped with a heat storage device 9 , and the heat storage device 9 is connected to the water tank 5 through a gravity heat pipe 10 . The compressor 8 and the condenser 7 can be respectively enhanced heat exchange, reduce the heat dissipation pressure of the condenser 7 and the compressor 8, and then realize the heat preservation effect, prevent the loss of excess heat, and help save resources. The condenser 7 A heat conduction plate 6 is arranged between the water tank 5 .

Further, a water receiving tray 3 is arranged above the water tank 5 , and a first solenoid valve 4 is arranged between the water receiving tray 3 and the water tank 5 . The water tank 5 is connected with an air storage tank 11, and the gas storage tank 11 is provided with a steam outlet 13, and a second solenoid valve 12 is provided at the steam outlet 13. The first evaporator 1 is connected with a first air blower 15, and the second evaporator 2 is connected with a second air blower 14, through which the first air blower 15 and the second air blower 14 send gas into the freezer compartment 18 and the refrigerator compartment 20.

In addition, the heat storage device 9 includes at least one layer of thermal insulation material, and the thermal storage material used in the thermal insulation material layer has a phase transition temperature of 30-50°C. The gravity heat pipe 10 includes a condensing section, an adiabatic section and an evaporating section, which are one-way thermal diodes that can only transfer heat along the condensing section to the evaporating section. The gravity heat pipe 10 does not have a liquid-absorbing wick, and can be returned to the evaporation section by the power of the condensate itself, so no external power is needed.

Embodiment two

This example discloses an energy-storage energy-saving refrigerator, including the energy-storage energy-saving defrosting system described in Embodiment 1, the first evaporator 1 is connected to the air outlet 23 of the freezer compartment, and the second evaporator 2 Connect the air outlet 21 of the refrigerating chamber; the air outlet 23 of the freezing chamber is provided with a first electric air valve 26, the air outlet 21 of the refrigerating chamber is provided with a second electric air valve 25, and the first evaporator 1 A third electric damper 27 is arranged between the second evaporator 2 , the freezing chamber 18 is provided with a gas outlet, and a fourth electric damper 28 is arranged at the gas outlet.

In addition, the outside of the refrigerator housing 24 is wrapped with insulation materials to prevent heat loss. The refrigerator housing 24 is a metal or plastic housing. The cold storage device 22, heat storage device 9, heat insulation section of the gravity heat pipe 10, Gas storage box 11, the outer periphery of water tank 5 are all provided with thermal insulation material, in order to avoid heat loss in the environment. The freezing chamber 18 and the refrigerating chamber 20 are respectively wrapped with a first cold storage material and a second cold storage material. The phase transition temperature of the first cold storage material is -18 to -12°C; the phase transition temperature of the second cold storage material is 0 to 10°C.

As shown in Figure 2 and Figure 3, in cooling mode operation, the first electric damper 26, the second electric damper 2525, and the fourth electric damper 28 are opened, and the first solenoid valve 4, the second solenoid valve 12, the second solenoid valve Three electric dampers 27 are closed. The condensed refrigerant high-pressure liquid flows out from the condenser 7 and enters the throttling device 16 for throttling. The refrigerant is converted into a low-temperature and low-pressure gas-liquid two-phase mixed state and flows out of the throttling device 16. Part of it enters the first evaporator 1 , and the other part first enters the cold storage device 22 to store cold in the cold storage device 22 , and then the refrigerant after cold storage enters the second evaporator 2 . The refrigerant in the first evaporator 1 and the second evaporator 2 is evaporated in the evaporator, and absorbs heat from the surrounding air, so that the temperature of the surrounding air is reduced to a low-temperature gas, and the low-temperature and low-pressure refrigerant flows from the first evaporator 1 and After the flow out of the second evaporator 2 is merged into the compressor 8 through the confluence tee. There is a heat storage device 9 around the compressor 8 , and the heat storage material in it can absorb the heat of the compressor 8 to store heat, and the heat in the heat storage device 9 can be transferred to the water tank 5 through the gravity heat pipe 10 at the same time. The high-temperature and high-pressure refrigerant flows out from the compressor 8 into the condenser 7, and the refrigerant is cooled and condensed in the condenser 7 and releases heat. The released heat is transferred to the water tank 5 by the heat conduction plate 6, the heat of the compressor 8 and the condenser 7 is combined in the water tank 5, and the condensed water generated after defrosting in the water tank 5 is converted from a liquid state to a gas state and stored in the gas storage Box 11.

The low-temperature gas generated by the first evaporator 1 is delivered to the freezer chamber 18 through the freezer air outlet 23 under the action of the first blower 15, and then the gas is discharged from the freezer chamber 18 by the fourth electric damper 28, thereby cooling. recycling. The low-temperature gas that the second evaporator 2 produces is under the effect of the second air blower 14, is passed in the refrigerator room through the air outlet 21 of the refrigerator room, and then the gas is discharged from the refrigerator room 20 by the air outlet, and the air outlet 17 is used to supplement the air volume.

As shown in Figure 4, when the defrosting mode is running, the first electric damper 26, the second electric damper 25, and the fourth electric damper 28 are closed, and the first solenoid valve 4, the second solenoid valve 12, and the third electric damper 27 open. The high-temperature steam in the gas storage box 11 flows out from the steam outlet, the second blower 14 operates to make the high-temperature steam flow through the second evaporator 2, and the high-temperature steam flows out of the second evaporator 2 and then flows into the first evaporator through the third electric damper 27 1, so that the first evaporator 11 and the second evaporator 2 are defrosted, and the remaining gas after defrosting can be discharged from the tuyere. The condensed water produced after defrosting enters the water receiving tray 3 and flows into the water tank 5 through the first solenoid valve 4 . During the defrosting process, the cold storage device 22 releases cold energy to maintain the temperature in the freezing chamber 18 and the refrigerating chamber 20 .

While certain preferred embodiments of the present application have been described, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, the appended claims are intended to be construed to cover the preferred embodiment and all changes and modifications which fall within the scope of the application.

Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of its invention. In this way, if these modifications and variations to the present application fall within the scope of the claims of the application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims (10)

1. The energy-storage type energy-saving defrosting system comprises a compressor, a condenser, a first evaporator, a second evaporator and a cold accumulation device, and is characterized in that the condenser is connected with a throttling device, the throttling device is respectively connected with the first evaporator and the cold accumulation device through a shunt tee joint, the cold accumulation device is connected with the second evaporator, the first evaporator and the second evaporator are arranged in parallel, and the second evaporator and the cold accumulation device are arranged in series;

the compressor is externally wrapped with a heat storage device, and the heat storage device is connected with a water tank through a gravity heat pipe.

2. The energy-saving defrosting system according to claim 1, wherein a water receiving tray is arranged above the water tank, and a first electromagnetic valve is arranged between the water receiving tray and the water tank.

3. The energy-saving defrosting system according to claim 1, wherein the water tank is connected with a gas storage tank, a steam outlet is arranged on the gas storage tank, and a second electromagnetic valve is arranged at the steam outlet.

4. The energy storage and conservation defrosting system according to claim 1 wherein the first evaporator is connected with a first blower and the second evaporator is connected with a second blower.

5. The energy-saving defrosting system according to claim 1, wherein the first evaporator and the second evaporator are connected to the compressor through a confluence tee so that the refrigerant in the condenser enters the compressor.

6. The energy-saving defrosting system according to claim 1, wherein the heat storage device comprises at least one heat-insulating material layer, and the phase transition temperature of the heat storage material used for the heat-insulating material layer is 30-50 ℃.

7. The energy storage and conservation defrosting system of claim 1 wherein the gravity assisted heat pipe comprises a condensing section, an insulating section and an evaporating section which is a unidirectional thermal diode that can transfer heat only along the condensing section to the evaporating section.

8. An energy-storage type energy-saving refrigerator, comprising a refrigerator shell, a refrigerating chamber and a freezing chamber, and being characterized by comprising the energy-storage type energy-saving defrosting system as claimed in any one of the above claims 1-7;

the first evaporator is connected with the refrigerating chamber air supply outlet, and the second evaporator is connected with the refrigerating chamber air supply outlet;

the refrigerating chamber air supply outlet is provided with a first electric air valve, the refrigerating chamber air supply outlet is provided with a second electric air valve, a third electric air valve is arranged between the first evaporator and the second evaporator, the refrigerating chamber is provided with a gas outlet, and the gas outlet is provided with a fourth electric air valve.

9. The energy-saving refrigerator of claim 8, wherein the heat insulation material for preventing heat loss is wrapped around the outer side of the refrigerator case;

the freezing chamber and the refrigerating chamber are respectively wrapped with a first cold accumulation material and a second cold accumulation material.

10. The energy-saving refrigerator of claim 9, wherein the phase transition temperature of the first cold storage material is-18 to-12 ℃;

the phase transition temperature of the second cold storage material is 0-10 ℃.