CN215638171U - Air-cooled refrigerator - Google Patents
Air-cooled refrigerator Download PDFInfo
- Publication number
- CN215638171U CN215638171U CN202120605617.1U CN202120605617U CN215638171U CN 215638171 U CN215638171 U CN 215638171U CN 202120605617 U CN202120605617 U CN 202120605617U CN 215638171 U CN215638171 U CN 215638171U
- Authority
- CN
- China
- Prior art keywords
- compressor
- heat exchange
- evaporator
- exchange device
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Defrosting Systems (AREA)
Abstract
本实用新型提供了一种风冷冰箱，其包括压缩机、蒸发器、换热装置和阀门组件，压缩机的排气端通过第一化霜循环管路与蒸发器的进端连接，蒸发器的出端通过第二化霜循环管路与换热装置的进端连接，换热装置的出端与压缩机的进端连通，阀门组件设置于第一化霜循环管路和第二化霜循环管路上，阀门组件配置为当蒸发器需要化霜时受控将压缩机的排气端与蒸发器的进端导通，并将蒸发器的出端与换热装置的进端导通，从而使得蒸发器作为冷凝器使用，从内向外快速散热，融化蒸发器上的霜，相比电加热丝化霜，该种方式功率更低，效率更高，除霜时间更短，更加节能。
The utility model provides an air-cooled refrigerator, which comprises a compressor, an evaporator, a heat exchange device and a valve assembly. The exhaust end of the compressor is connected with the inlet end of the evaporator through a first defrosting circulation pipeline, and the evaporator The outlet end of the heat exchange device is connected to the inlet end of the heat exchange device through the second defrost circulation pipeline, the outlet end of the heat exchange device is communicated with the inlet end of the compressor, and the valve assembly is arranged in the first defrost cycle pipeline and the second defrost cycle. On the circulation pipeline, the valve assembly is configured to control the discharge end of the compressor and the inlet end of the evaporator when the evaporator needs to be defrosted, and conduct the outlet end of the evaporator to the inlet end of the heat exchange device. Therefore, the evaporator can be used as a condenser to quickly dissipate heat from the inside to the outside, and melt the frost on the evaporator. Compared with the electric heating wire defrosting, this method has lower power, higher efficiency, shorter defrosting time and more energy saving.
Description
Technical Field
The utility model relates to the technical field of refrigeration and freezing, in particular to an air-cooled refrigerator.
Background
In the operation process of the air-cooled refrigerator, wet air in a compartment exchanges heat with an evaporator with low temperature, a frost layer is easily formed on the surface of the evaporator, and the heat exchange effect of the evaporator can be reduced along with the increase of the thickness of the frost layer, so that the refrigeration efficiency is influenced, and therefore the air-cooled refrigerator needs to be defrosted regularly.
In current air-cooled refrigerator, the defrosting heater strip is generally installed to evaporimeter pipeline bottom, gives the evaporimeter pipeline heating through the mode of thermal convection and heat radiation, makes the evaporimeter pipeline from lower and upper being heated to melt the frost that attaches to on the evaporimeter pipeline.
The existing defrosting mode has the following two problems: firstly, the evaporator is heated at uneven temperature in the height direction, and when the evaporator is higher in the height direction, the risk of incomplete defrosting exists; secondly, the power of the heating wire is generally more than 100W, the working time of the heating wire can be prolonged when the preset defrosting temperature is reached, the defrosting time of a small refrigerator generally needs more than 20min, the defrosting time of a large refrigerator generally needs more than 30min, and the long-time defrosting can cause the temperature of the compartment to rise, is not beneficial to the storage of food and can increase the power consumption.
Disclosure of Invention
It is an object of the present invention to provide an air-cooled refrigerator that solves at least the above problems.
It is a further object of the present invention to reduce the condensation temperature.
In particular, the present invention provides an air-cooled refrigerator, comprising:
the air conditioner comprises a compressor, an evaporator and a heat exchange device, wherein the exhaust end of the compressor is connected with the inlet end of the evaporator through a first defrosting circulation pipeline, the outlet end of the evaporator is connected with the inlet end of the heat exchange device through a second defrosting circulation pipeline, and the outlet end of the heat exchange device is communicated with the inlet end of the compressor;
and the valve assembly is arranged on the first defrosting circulation pipeline and the second defrosting circulation pipeline, is controlled to conduct the exhaust end of the compressor with the inlet end of the evaporator when the evaporator needs defrosting, and conducts the outlet end of the evaporator with the inlet end of the heat exchange device, so that the evaporator dissipates heat and defrosts, and the heat exchange device absorbs heat and cools.
Optionally, the valve assembly comprises:
the first three-way valve is arranged on the first defrosting circulation pipeline, the inlet end of the first three-way valve is communicated with the exhaust end of the compressor, and the first outlet end of the first three-way valve is arranged to connect the exhaust end of the compressor with the inlet end of the evaporator;
the second three-way valve is arranged on the second frost circulating pipeline, the inlet end of the second three-way valve is communicated with the outlet end of the evaporator, and the first outlet end of the second three-way valve is arranged to connect the outlet end of the evaporator with the inlet end of the heat exchange device;
when the evaporator needs defrosting, the first three-way valve is controlled to conduct the inlet end and the first outlet end of the first three-way valve, and the second three-way valve is controlled to conduct the inlet end and the first outlet end of the second three-way valve.
Optionally, the air-cooled refrigerator further comprises:
and the first throttling device is arranged on the second defrosting circulation pipeline and is positioned between the first outlet end of the second three-way valve and the inlet end of the heat exchange device.
Optionally, the air-cooled refrigerator further comprises:
the condenser is arranged on the first refrigeration circulation pipeline, the inlet end of the condenser is communicated with the second outlet end of the first three-way valve, the outlet end of the condenser is connected with the inlet end of the second throttling device, and the outlet end of the second throttling device is communicated with the inlet end of the evaporator;
a second refrigeration cycle line configured to communicate a second outlet of the second three-way valve with an inlet of the compressor;
when the air-cooled refrigerator needs to refrigerate, the first three-way valve is controlled to conduct the inlet end and the second outlet end of the first three-way valve, and the second three-way valve is controlled to conduct the inlet end and the second outlet end of the second three-way valve, so that the evaporator absorbs heat to refrigerate.
Optionally, the air-cooled refrigerator further comprises:
the heat exchanger comprises a box body, a condenser and a heat exchange device, wherein the box body is limited with a compressor bin, the compressor, the condenser and the heat exchange device are all arranged in the compressor bin, and the heat exchange device comprises energy storage liquid and a heat exchanger arranged in the energy storage liquid;
and the cooling fan is arranged in the press bin and is configured to accelerate the airflow exchange between the press bin and the external environment.
Optionally, the heat exchanger is disposed adjacent to and in contact with the compressor, and the heat exchanger is formed with a first vent hole, so that under the driving of the cooling fan, hot air in the compressor compartment exchanges heat with cooling capacity in the heat exchanger, thereby accelerating the heat dissipation of the compressor and the condenser.
Optionally, the heat exchange device is arranged above the compressor, and the first vent holes are formed in the two lateral sides of the heat exchange device respectively;
the compressor, the heat radiation fan and the condenser are sequentially distributed along the transverse direction;
first heat dissipation openings are formed in the two transverse sides of the press bin respectively;
the heat dissipation fan is configured to suck ambient air from the first heat dissipation opening on one side close to the condenser, so that the ambient air flows through the condenser, then flows through the heat exchange device and the compressor, and flows out of the press cabin from the other first heat dissipation opening.
Optionally, the heat exchange device is disposed adjacent to the condenser;
the heat exchange device is provided with a second vent hole so that hot air in the press bin and cold energy in the heat exchange device exchange heat under the driving of the heat radiation fan, and therefore heat radiation of the compressor and the condenser is accelerated.
Optionally, the compressor, the heat dissipation fan, the condenser and the heat exchange device are sequentially distributed along the transverse direction;
the second ventilation holes are formed in the two transverse sides of the heat exchange device respectively, and second heat dissipation openings are formed in the two transverse sides of the press bin respectively;
the heat dissipation fan is configured to suck ambient air from the second heat dissipation opening close to one side of the condenser, so that the ambient air sequentially flows through the condenser, the heat exchange device and the compressor and flows out of the press cabin from the other second heat dissipation opening.
Optionally, the condenser and the cooling fan are both vertically placed in the press bin.
According to the air-cooled refrigerator, the heat exchange device, the valve assembly and the defrosting circulation pipeline are additionally arranged, when the evaporator needs defrosting, the flow direction of a refrigerant is controlled by the valve assembly, the evaporator is used as a condenser, and the heat exchange device is used as the evaporator, so that the evaporator used as the condenser can quickly dissipate heat from inside to outside to melt frost on the evaporator.
Furthermore, the heat exchange device of the air-cooled refrigerator is designed to comprise an energy storage liquid (not shown) and a heat exchanger arranged in the energy storage liquid, the energy storage liquid stores cold energy in a defrosting process, the heat exchange device is arranged in the compressor bin, and the compressor and the condenser are subjected to heat dissipation in a conduction and/or convection mode, so that the condensation temperature is effectively reduced, the refrigerating capacity of a refrigerating system is improved, the starting rate of the compressor is reduced, and the energy consumption is further reduced.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the utility model will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic view of connection of a refrigerating cycle system and a defrosting cycle system of an air-cooled refrigerator according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a press bin and its internal components of an air-cooled refrigerator according to one embodiment of the present invention;
fig. 3 is a schematic structural view of a heat exchanging apparatus of an air-cooled refrigerator according to an embodiment of the present invention;
fig. 4 is a schematic view illustrating a connection of a refrigerating cycle system and a defrosting cycle system of an air-cooled refrigerator according to another embodiment of the present invention;
FIG. 5 is a schematic structural view of a pressing chamber of an air-cooled refrigerator and its internal components according to another embodiment of the present invention; and
fig. 6 is a schematic structural view of a heat exchanging apparatus of an air-cooled refrigerator according to another embodiment of the present invention.
Detailed Description
The present embodiment provides an air-cooled refrigerator, which is described in detail below with reference to fig. 1 to 6.
An air-cooled refrigerator generally includes a compressor 101 and an evaporator 102, and the compressor 101 powers a refrigeration cycle, increases the pressure and temperature of a refrigerant, and provides conditions for the refrigerant to transfer heat to the outside. The evaporator 102 serves as a heat exchange member, and absorbs ambient heat to lower the temperature of the compartment, thereby achieving refrigeration of the refrigerator.
In the operation process of the air-cooled refrigerator, a frost layer is easily formed on the surface of the evaporator 102, and in order to ensure the heat exchange effect of the evaporator 102, the embodiment provides a special defrosting structure. Specifically, the air-cooled refrigerator of this embodiment further includes a heat exchanger 110 and a valve assembly, an exhaust end of the compressor 101 is connected to an inlet end of the evaporator 102 through the first defrosting circulation pipeline 105, an outlet end of the evaporator 102 is connected to an inlet end of the heat exchanger 110 through the second defrosting circulation pipeline 106, and an outlet end of the heat exchanger 110 is communicated with an inlet end of the compressor 101. The valve assembly is disposed on the first defrosting circulation pipeline 105 and the second defrosting circulation pipeline 106, and is configured to conduct the exhaust end of the compressor 101 with the inlet end of the evaporator 102 and conduct the outlet end of the evaporator 102 with the inlet end of the heat exchanging device 110 when the evaporator 102 needs defrosting, so that the evaporator 102 dissipates heat and defrosts, and the heat exchanging device 110 absorbs heat and cools.
As above, the air-cooled refrigerator of this embodiment is through addding heat transfer device 110, the valve assembly and the circulation pipeline that defrosts, when evaporimeter 102 needs to defrosts, utilize the flow direction of valve assembly control refrigerant, use evaporimeter 102 as the condenser, utilize heat transfer device 110 to use as the evaporimeter, thereby make evaporimeter 102 from inside to outside quick heat dissipation as the condenser use, melt the frost on evaporimeter 102, thereby can high-efficient quick defrosting, compare electric heating wire defrosting, this kind of mode power is lower, higher efficiency, defrosting time is shorter, and is more energy-conserving.
In one embodiment, the valve assembly may include a first three-way valve 103 and a second three-way valve 104, the first three-way valve 103 may be disposed on the first defrosting circulation line 105, an inlet thereof is communicated with the exhaust end of the compressor 101, and a first outlet thereof is disposed to connect the exhaust end of the compressor 101 with an inlet of the evaporator 102. The second three-way valve 104 may be disposed on the second defrosting circulation line 106, an inlet end of the second three-way valve is communicated with an outlet end of the evaporator 102, a first outlet end of the second three-way valve is configured to connect an outlet end of the evaporator 102 with an inlet end of the heat exchange device 110, when the evaporator 102 needs defrosting, the first three-way valve 103 is controlled to conduct an inlet end of the second three-way valve 103 with a first outlet end of the second three-way valve to communicate an exhaust end of the compressor 101 with an inlet end of the evaporator 102, and the second three-way valve 104 is controlled to conduct an inlet end of the second three-way valve 104 with a first outlet end of the second three-way valve to communicate an outlet end of the evaporator 102 with an inlet end of the heat exchange device 110, so as to form a refrigerant circulation loop among the compressor 101, the evaporator 102, and the heat exchange device 110, so that the evaporator 102 is used as a condenser, dissipates defrosting outwards, and controls a flow direction of a refrigerant by using the two three-way valves, thereby simplifying a system design and a control flow.
The air-cooled refrigerator further includes a first throttling device 107, which is disposed on the second defrosting circulation pipeline 106 and located between the first outlet of the second three-way valve 104 and the inlet of the heat exchanging device 110. In the defrosting cycle of the refrigerant, the refrigerant is compressed into high-temperature and high-pressure superheated refrigerant vapor by the compressor 101, enters the evaporator 102 (which is used as a condenser at this time), the evaporator 102 dissipates heat outwards to defrost, so that the high-temperature and high-pressure refrigerant vapor is condensed into high-pressure and low-temperature liquid in the evaporator 102, then enters the first throttling device 107 (for example, a capillary tube), is throttled in the first throttling device 107 in an enthalpy manner to become low-temperature and low-pressure refrigerant vapor, then enters the heat exchange device 110 to boil and absorb external heat to become saturated vapor, and then is sucked by the compressor 101, thus forming a defrosting cycle of the refrigerant.
Further, the air-cooled refrigerator further includes a first refrigeration cycle pipeline 121, a second refrigeration cycle pipeline 124, a condenser 122 and a second throttling device, the condenser 122 and the second throttling device 123 are both disposed on the first refrigeration cycle pipeline 121, an inlet end of the condenser 122 is communicated with a second outlet end of the first three-way valve 103, an outlet end of the condenser 122 is connected with an inlet end of the second throttling device 123, and an outlet end of the second throttling device 123 is communicated with an inlet end of the evaporator 102. The second refrigeration cycle pipeline 124 is configured to communicate the second outlet of the second three-way valve 104 with the inlet of the compressor 101, when the air-cooled refrigerator needs to refrigerate, the first three-way valve 103 is controlled to conduct the inlet thereof with the second outlet thereof, and the second three-way valve 104 is controlled to conduct the inlet thereof with the second outlet thereof, so that the evaporator 102 absorbs heat to refrigerate.
In the refrigerant refrigeration cycle, the refrigerant is compressed into high-temperature and high-pressure superheated refrigerant vapor by the compressor 101, enters the condenser 122, the condenser 122 radiates heat outwards, so that the high-temperature and high-pressure refrigerant vapor is condensed into high-pressure and low-temperature liquid in the condenser 122, then enters the second throttling device 123 (for example, a capillary tube), is subjected to intermediate enthalpy throttling in the second throttling device 123 to become low-temperature and low-pressure refrigerant vapor, then enters the evaporator 102 to boil a large amount of heat absorbed from the outside to become saturated vapor, so that refrigeration of the air-cooled refrigerator is realized, and the refrigerant saturated vapor is sucked by the compressor 101, so that the refrigeration cycle is formed.
The air-cooled refrigerator of the embodiment can switch the defrosting cycle and the refrigerating cycle of the refrigerant through the first three-way valve 103 and the second three-way valve 104, thereby ensuring the refrigerating efficiency and the defrosting efficiency.
As described above, during the defrosting cycle, the refrigerant in the heat exchanger 110 absorbs a large amount of external heat, so that the heat exchanger 110 has a refrigeration function, and in order to utilize the refrigeration capacity, the inventor of the present application performs the following further improved design on the air-cooled refrigerator.
The heat exchanging device 110 is designed to include an energy storage fluid (not shown) and a heat exchanger 111 disposed in the energy storage fluid, wherein an inlet of the heat exchanger 111 is connected to an outlet of the evaporator 102 through a first outlet of the second three-way valve 104, and an outlet of the heat exchanger 111 is communicated with an inlet of the compressor 101, so that a defrosting circulation loop is formed among the compressor 101, the evaporator 102, the first throttling device 107 and the heat exchanger 111.
The heat exchange device 110, the compressor 101 and the condenser 122 are all disposed in a press cabin 120 defined by a box body of the air-cooled refrigerator, and a heat dissipation fan 108 for accelerating air flow exchange between the press cabin 120 and the external environment is further disposed in the press cabin 120 to promote heat dissipation of the compressor 101 and the condenser 122. As shown in the drawing, both the condenser 122 and the heat dissipation fan 108 can be vertically placed in the press bin 120.
In the defrosting cycle process, the refrigerant in the heat exchanger 111 absorbs a large amount of heat, so that the temperature of the energy storage liquid is greatly reduced, the heat exchange device 110 is arranged in the press bin 120, the heat dissipation of the compressor 101 and the condenser 122 in the press bin 120 by the energy storage liquid is facilitated, and the cold accumulated by the energy storage liquid can still be used for dissipating the heat of the press bin 120 in the refrigerating cycle process after the defrosting cycle is finished due to the accumulation of the cold by the energy storage liquid.
The energy storage liquid can be a mixture of high molecular organic materials, such as a mixture of sodium polyacrylate, sodium carboxymethyl cellulose and the like, and has higher cold capacity and can store more cold.
Specifically, in one embodiment, as shown in fig. 1, the heat exchanging device 110 is disposed adjacent to the compressor 101 and in contact with the compressor 101, and the energy storage fluid can transfer cold energy to the compressor 101 by heat conduction, so as to lower the temperature of the compressor 101, and achieve the effect of dissipating heat from the compressor 101. In addition, the heat exchanging device 110 may be further formed with a first vent 112 to enable hot air in the compressor compartment 120 to exchange heat with cold energy in the heat exchanging device 110 under the driving of the heat dissipation fan 108, so as to further accelerate the heat dissipation of the compressor 101 and the condenser 122.
As shown in fig. 2 and 3, the straight arrows in fig. 2 illustrate the flow direction of the air, the heat exchanging device 110 may be disposed above the compressor 101, first ventilation holes 112 may be formed on both lateral sides of the heat exchanging device 110, the compressor 101, the heat dissipation fan 108, and the condenser 122 may be distributed in sequence along the lateral direction, and first heat dissipation openings 120a may be formed on both lateral sides of the pressing bin 120. The heat dissipation fan 108 is configured to draw in ambient air from a first heat dissipation opening 120a on a side adjacent to the condenser 122, so as to cause the ambient air to flow through the condenser 122, then through the heat exchange device 110 and the compressor 101, and flow out of the compressor compartment 120 from another first heat dissipation opening 120a, thereby discharging hot air in the compressor compartment 120, and achieving heat dissipation of the compressor 101 and the condenser 122. That is, the heat exchange device 110 arranged as above can cool down the compressor 101 and the press cabin 120 by conduction and convection.
In another embodiment, as shown in fig. 4, the heat exchanging device 110 may be disposed adjacent to the condenser 122, and the heat exchanging device 110 may be formed with a second vent hole 113 to enable hot air in the compressor compartment 120 to exchange heat with cold in the heat exchanging device 110 under the driving of the heat dissipation fan 108, so as to accelerate heat dissipation of the compressor 101 and the condenser 122.
Specifically, as shown in fig. 5 and fig. 6, the straight arrows in fig. 5 illustrate the airflow direction, the compressor 101, the heat dissipation fan 108, the condenser 122, and the heat exchange device 110 may be sequentially distributed along the transverse direction, the second ventilation holes 113 may be respectively formed on two transverse sides of the heat exchange device 110, and the second heat dissipation openings 120b are respectively formed on two transverse sides of the pressing cabin 120. The heat dissipation fan 108 is configured to draw ambient air from a second heat dissipation opening 120b on a side adjacent to the condenser 122, cause the ambient air to flow through the condenser 122, the heat exchange device 110, the compressor 101, and flow out of the press bin 120 from another second heat dissipation opening 120 b. In this way, the cold stored in the energy storage liquid in the heat exchanger 110 is used to sequentially dissipate heat from the condenser 122 and the compressor 101 by the convection method, thereby reducing the temperatures of the condenser 122 and the compressor 101.
As described above, in the present embodiment, the heat exchange device 110 is disposed at a specific position in the press cabin 120 by using the cold energy released by the heat exchanger 111 during the defrosting process accumulated by the energy storage liquid, so as to effectively reduce the condensation temperature, increase the cooling capacity of the refrigeration system, reduce the on-time rate of the compressor 101, and further reduce the energy consumption.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the utility model have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the utility model may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the utility model. Accordingly, the scope of the utility model should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120605617.1U CN215638171U (en) | 2021-03-25 | 2021-03-25 | Air-cooled refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120605617.1U CN215638171U (en) | 2021-03-25 | 2021-03-25 | Air-cooled refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215638171U true CN215638171U (en) | 2022-01-25 |
Family
ID=79913803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120605617.1U Active CN215638171U (en) | 2021-03-25 | 2021-03-25 | Air-cooled refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215638171U (en) |
-
2021
- 2021-03-25 CN CN202120605617.1U patent/CN215638171U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207922672U (en) | Phase transformation defroster and refrigeration equipment | |
| CN202195637U (en) | Heat pipe type refrigerator | |
| JP5261066B2 (en) | Refrigerator and refrigerator | |
| CN105091410A (en) | Heat pump | |
| CN102062492A (en) | Air conditioner | |
| CN109737662A (en) | A compact horizontal frost-free freezer refrigeration system and defrosting control method | |
| CN107782045A (en) | A kind of semiconductor defrosting refrigerator | |
| WO2004113804A1 (en) | Refrigerator | |
| CN104823010B (en) | Refrigerator | |
| CN102563781A (en) | Gravitational convection radiation air conditioner | |
| CN212378342U (en) | Infrared defrosting heat exchanger and heat pump air conditioner adopting same | |
| CN215638171U (en) | Air-cooled refrigerator | |
| CN205843159U (en) | Two-way pressure convection of heat wind defrosting heat pump | |
| CN217979466U (en) | Integral drainage structure of forced air cooling freezer | |
| CN111678290A (en) | Infrared defrosting heat exchanger and heat pump air conditioner adopting same | |
| CN107036327A (en) | It is a kind of to prevent the multistage evaporation compression heat pump method of work and device of frosting | |
| CN211823237U (en) | Refrigeration cycle system and refrigeration equipment with same | |
| CN105953485A (en) | Heat exchange method and system and heat pump system with defrosting function | |
| CN109458687A (en) | Air conditioning system and air conditioner applying same | |
| CN214536899U (en) | Refrigerator and freezer | |
| CN113074465B (en) | Refrigeration cycle system, refrigeration equipment and control method thereof | |
| CN209857358U (en) | A protective device and air conditioner with both low-temperature defrosting and high-temperature protection | |
| CN202885401U (en) | Refrigerator water pan evaporating pipe | |
| CN208687895U (en) | A solar energy internal circulation heat pump air conditioner | |
| CN202382340U (en) | Gravitational convection radiation air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |