Portable refrigerator-freezer

Abstract

The utility model relates to the technical field of refrigeration, and particularly discloses a portable refrigerator-freezer. Comprising a refrigerator-freezer and a moving part; the refrigerating and freezing box is detachably arranged on the moving part; a power supply component is arranged on the moving part; the refrigerating and freezing box is electrically connected with the power supply component when being arranged on the moving part; a lifting handle is arranged at the top of the refrigerator door of the refrigerator-freezer; the refrigerator-freezer is provided with an inner container and a shell; a storage space is formed in the inner container; a condensation pipe is arranged on the outer surface of the inner container; the condensation pipe and the outer surface of the inner container are arranged in a winding mode. A heat preservation layer is further arranged outside the condensation pipe; the moving part comprises a mounting seat and a moving rod; and pulleys are arranged on the two sides of the bottom, where the moving rod is arranged, of the mounting seat respectively. According to the portable refrigerating and freezing box, brand new use experience is brought to a user through flexible mobility and efficient refrigerating and freezing effects.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to a portable refrigerator-freezer. Background Art

[0002] A refrigerator is a device used to store food or other items, usually to keep food fresh and extend its shelf life. A refrigerator ensures that food is kept in a suitable environment by regulating temperature and humidity. Generally speaking, the temperature inside a refrigerator is usually maintained between 0 and 4 degrees Celsius, which helps slow down bacterial growth and prolong the shelf life of food.

[0003] A portable cooler is a device that can be carried lightly and keeps food or drinks cool. Such coolers are often used for outdoor activities, camping, picnics, long-distance travel or in vehicles. Portable coolers can work by connecting to a car power source or using a power bank, keeping the internal temperature below room temperature to ensure the freshness of food. When choosing a portable cooler, consider factors such as capacity, insulation performance, power consumption, and portability to meet your needs.

[0004] A portable refrigerator is disclosed in the patent "Portable Refrigerator" (publication number CN101307976A, hereinafter referred to as prior art 1). In prior art 1, an inner liner and an outer shell are provided, and a condensation duct is provided on the outer surface of the inner liner in a winding manner. A cold air compression refrigerant and a condensation tank are provided inside the refrigerator, and a loop is connected between the condensation duct, the cold air compression refrigerant and the condensation tank to refrigerate the inner liner and refrigerate it. The setting of the cold air compression refrigerator in prior art 1 requires an external power supply when in use, which is not convenient for refrigeration when taking it out. In addition, the refrigerator in prior art 1 is set to a smaller volume to help carry. Since so many refrigeration components are provided, the internal storage space will be limited. In addition, the refrigerator in prior art 1 is not provided with components to help carry. When the refrigerator is filled with refrigeration medium, its own weight plus the weight of the refrigeration medium makes it even more inconvenient to carry. Utility Model Content

[0005] In view of this, an embodiment of the utility model provides a portable refrigerator-freezer to solve the problem that the prior art is not easy to carry and cannot perform refrigeration for a long time.

[0006] In the first aspect, an embodiment of the utility model provides a portable refrigerator-freezer, comprising a refrigerator-freezer and a moving part; the refrigerator-freezer is detachably arranged on the moving part; a power supply component is provided on the moving part; the refrigerator-freezer is electrically connected to the power supply component when it is arranged on the moving part; a handle is provided on the top of the door of the refrigerator-freezer; the refrigerator-freezer is provided with an inner tank and an outer shell; a storage space is provided inside the inner tank; the inner tank is arranged inside the outer shell; a condenser is provided on the outer surface of the inner tank; the condenser and the outer surface of the inner tank are arranged in a winding manner; an insulation layer is also provided on the outside of the condenser; the insulation layer seals the outside of the condenser; the moving part comprises a mounting seat and a moving rod; the moving rod is arranged on one side of the mounting seat and is fixedly connected to the mounting seat; the mounting seat is provided with pulleys on both sides of the bottom where the moving rod is arranged.

[0007] Preferably, the top of the inner tank is sealedly connected to the outer shell; a cavity is provided between the bottom of the inner tank and the outer shell; and a small compressor and a condenser are provided in the cavity at the bottom of the storage space.

[0008] Preferably, an evaporator is provided between the outside of the insulation layer and the inner surface of the shell; the evaporator, the small compressor and the condenser are connected via a condenser pipe; the small compressor and the condenser are connected via a throttle valve.

[0009] Preferably, the pulley is a universal wheel; the bottom of the mounting seat is provided with brake components on both sides of the other end where the pulley is arranged; the brake components are arranged at the same height as the pulley.

[0010] Preferably, the door is hinged to the body of the refrigerator-freezer through a first hinge part and a second hinge part; the first hinge part and the second hinge part are respectively arranged at two sides of the door.

[0011] Preferably, a sealing member is provided on the joint surface between the box door and the box body; the box door seals the interior of the box body after being joined to the box body through the sealing member.

[0012] Preferably, a drainage hole is provided at the bottom of the inner tank, and the drainage hole is connected to a drainage pipe; the drainage pipe passes through the insulation layer and the outer shell and extends to the outside of the outer shell; the drainage pipe and the insulation layer are sealed.

[0013] Preferably, a detachable plunger is provided in the drainage pipe.

[0014] Preferably, the box door is provided with a door handle at the other end where the first hinge part and the second hinge part are provided; and a connector is provided at one end of the door handle.

[0015] Preferably, the box body is provided with an access piece at a position adapted to the connector; when the box door and the box body are in a closed state, the connector is inserted into the access piece to fix the box door to the box body.

[0016] The portable refrigerator-freezer provided by the utility model has the following beneficial effects:

[0017] The detachable design of the refrigerator and freezer and the mounting base allows users to easily install or remove it on the mobile part as needed, greatly increasing the flexibility of use. Whether it is outdoor camping, picnics, or family short trips, it can be easily carried. The refrigerator and freezer is also equipped with a power supply component, so that the refrigeration and freezing effect can be maintained for a long time even when it is disconnected from the power supply. At the same time, the handle design on the top of the door allows users to easily lift and carry the refrigerator and freezer without worrying about the difficulty of moving. The design of the inner liner and the outer shell of the refrigerator and freezer also fully considers the refrigeration and freezing effect. The interior of the liner is provided with a storage space that can accommodate various foods and beverages to meet the storage needs of users. The outer surface of the liner is provided with a condenser. Through the winding setting of the condenser and the outer surface of the liner, refrigeration can be performed more effectively to ensure that the temperature in the storage space is always kept within the set range. At the same time, an insulation layer is also provided on the outside of the condenser, which can better maintain the refrigeration effect inside the liner, reduce heat loss, and further improve the refrigeration and freezing effect. Finally, the movable part is fixedly connected to the mounting base and the movable rod, so that the movable part can stably support the refrigerator-freezer, is easy to carry and move, and further improves the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for use in the embodiment of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work, and these are all within the protection scope of the utility model.

[0019] Figure 1 It is a schematic diagram of the overall structure of a portable refrigerator-freezer;

[0020] Figure 2 It is a schematic diagram of the internal structure of a portable refrigerator-freezer;

[0021] Figure 3 It is a three-dimensional schematic diagram of the internal structure of a portable refrigerator-freezer;

[0022] Figure 4 It is a schematic diagram of the external structure of a portable refrigerator-freezer;

[0023] Figure 5It is a schematic diagram of the door structure of a portable refrigerator-freezer;

[0024] Parts and numbers in the picture:

[0025] 1-refrigerator-freezer; 11-door, 111-handle, 112-first hinge, 113-second hinge, 114-seal, 115-door handle, 116-connector; 12-body, 121-shell, 122-liner, 123-storage space, 124-insulation layer, 125-access piece; 13-power supply component; 14-mounting seat, 141-moving rod, 142-pulley, 143-brake; 15-small compressor; 16-condenser, 161-condenser; 17-evaporator; 18-drainage pipe. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model. Moreover, the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the presence of other identical elements in the process, method, article or device including the elements. If there is no conflict, the embodiments of the utility model and the various features in the embodiments can be combined with each other, all within the scope of protection of the utility model.

[0027] Example 1

[0028] See also Figure 1The embodiment of the utility model provides a portable refrigerator-freezer, including a refrigerator-freezer 1 and a mobile part; the refrigerator-freezer 1 is detachably arranged on the mobile part; and a power supply component 13 is provided on the mobile part. In the design of the refrigerator-freezer 1, special attention is paid to its practicality and convenience. Its internal space layout is reasonable, which can not only meet the needs of refrigeration, but also perform freezing operations, providing great convenience for users. At the same time, the material of the refrigerator-freezer 1 has been carefully selected, which not only ensures a good thermal insulation effect, but also ensures the durability of the product.

[0029] See also Figure 1 , the mobile part refers to a movable platform or carrier, such as a trolley, a movable rack or other mobile equipment. This design makes the refrigerator-freezer 1 no longer limited to a fixed position, but can move freely with the movement of the mobile part, greatly improving the flexibility and convenience of use. At the same time, the electrical connection between the refrigerator-freezer 1 and the power supply component 13 ensures that it can continue to be powered during the movement, without worrying about power supply problems.

[0030] The mobile part has load-bearing capacity and can easily bear the weight of the refrigerator-freezer 1. The power supply component 13 is an important component of the portable refrigerator-freezer 1. It adopts an efficient and energy-saving power supply design, which can effectively extend the service life of the battery while ensuring the normal operation of the refrigerator-freezer 1. In addition, the refrigerator-freezer 1 also has a variety of charging methods, including battery charging, mains charging and vehicle charging. A portable battery is set on the mobile part. The various charging methods of the power supply component 13 greatly improve the scope of application and convenience of the product. A gap is provided between the battery and the refrigerator-freezer 1, and the power cord of the refrigerator-freezer 1 is electrically connected to the battery through this gap. Furthermore, a heat dissipation cloth is provided on the back of the mobile part, and the heat exchanged when the refrigerator-freezer 1 is in refrigeration operation is dissipated through the heat dissipation cloth on the back of the mobile part.

[0031] See also Figure 1 , the refrigerator-freezer 1 is electrically connected to the power supply component 13 when it is arranged on the moving part; a handle 111 is provided on the top of the door 11 of the refrigerator-freezer 1. The design of the handle 111 fully considers the carrying needs of the user, and adopts a sturdy and durable material to ensure the load-bearing capacity and service life of the handle 111. The user prefers to use the moving part to carry and move the refrigerator-freezer 1, which is more labor-saving and convenient. When the moving part is not needed to move, the refrigerator-freezer 1 is carried by the handle 111, which shortens the time the handle 111 is used for the refrigerator-freezer 1, and the moving part is used more for more labor-saving and convenient carrying.

[0032] See also Figure 2The refrigerator-freezer 1 is provided with an inner liner 122 and an outer shell 121; a storage space 123 is provided inside the inner liner 122; the inner liner 122 is arranged inside the outer shell 121; a condenser 161 is provided on the outer surface of the inner liner 122; the condenser 161 and the outer surface of the inner liner 122 are arranged in a winding manner; an insulation layer 124 is also provided outside the condenser 161; the insulation layer 124 wraps the outside of the condenser 161; the refrigerator-freezer 1 also has the characteristics of energy saving and environmental protection. Its condenser 161 adopts refrigeration technology, which can efficiently transfer heat to the outside and reduce energy consumption. The insulation layer 124 adopts efficient insulation material, which effectively reduces the loss of cold and further improves the energy efficiency ratio of the refrigerator-freezer 1. In addition, the space between the inner liner 122 and the outer shell 121 of the refrigerator-freezer 1 is filled with insulation material to reduce the influence of the external temperature on the food in the box 12. At the same time, the box door 11 is made of a material with good sealing properties to ensure that the temperature and humidity in the box body 12 will not be affected by changes in the external environment.

[0033] See also Figure 1 , the moving part includes a mounting seat 14 and a moving rod 141; the moving rod 141 is arranged on one side of the mounting seat 14 and is fixedly connected to the mounting seat 14; the mounting seat 14 is provided with pulleys 142 on both sides of the bottom where the moving rod 141 is arranged. The portable refrigerator-freezer 1 is also designed with full consideration of the user's convenience of operation. The design of the mounting seat 14 is stable and simple, and the height of the moving rod 141 can be adjusted so that the user can maintain a comfortable and labor-saving posture when pushing or pulling the refrigerator-freezer 1. At the same time, the pulley 142 is made of wear-resistant material and can maintain a stable moving state even on uneven roads. The moving rod 141 is arranged in multiple layers, which are nested one on another. When the height needs to be set, each layer is pulled out or pushed in to adjust the height of the moving rod 141, so as to obtain a suitable height for movement.

[0034] See also Figure 2, the top of the inner tank 122 is sealed and connected to the outer shell 121; a cavity is provided between the bottom of the inner tank 122 and the outer shell 121; a compressor and a condenser 16 are provided in the cavity at the bottom of the storage space 123. The compressor can be set as a small compressor 15 according to the actual application, which is convenient for carrying. In a specific embodiment, the volume of the portable refrigerator is generally less than 30 liters, and the power of the selected adapted compressor is generally less than 120W. An evaporator 17 is provided between the outside of the insulation layer 124 and the inner surface of the outer shell 121; the evaporator 17, the small compressor 15 and the condenser 16 are connected through a condensing pipe 161; the small compressor 15 and the condenser 16 are connected through a throttle valve. The material of the inner tank 122 is selected from high-quality insulation materials, which not only ensures the temperature stability of the storage space 123, but also improves the overall durability. At the same time, the surface of the inner tank 122 is specially treated to have good scratch and anti-fouling properties, which is convenient for users to carry out daily cleaning and maintenance. The refrigerator-freezer 1 has clear internal divisions, which is convenient for users to store various types of food according to different needs. The refrigeration area is provided with at least two independent areas, which effectively ensures the freshness and taste of the food.

[0035] See also Figure 1 , the pulley 142 is a universal wheel; the bottom of the mounting seat 14 is provided with brakes 143 on both sides of the other end where the pulley 142 is set; the brakes 143 are set at the same height as the pulley 142. The movable seat is displaced by the pulley 142 and braked by the brakes 143. Furthermore, the brakes 143 can be completely replaced by the pulley 142. Generally, when the movable part is placed, the universal wheel and the brake 143 touch the ground at the same time, and the brake is braked by the friction between the brake 143 and the ground. When the brake 143 and the universal wheel touch the ground at the same time, the universal wheel cannot move. When moving, the whole is tilted to a certain angle by the moving rod 141, so that the brake 143 is off the ground, so that the pulley 142 can roll freely, which is convenient for users to move the refrigerator-freezer 1. The design of the brake 143 fully considers the needs of users in actual use, and can ensure that the refrigerator-freezer 1 remains stable when placed to avoid accidental sliding or movement. At the same time, the height adjustment function of the moving rod 141 also allows the user to flexibly adjust the movement mode of the refrigerator-freezer 1 according to different ground conditions and usage scenarios, ensuring stability and convenience during the movement. The portable refrigerator-freezer 1 also has a wide range of applications. Whether it is a family trip, an outdoor picnic, or a commercial event, medical rescue, etc., it can provide users with a reliable refrigeration and freezing solution.

[0036] See also Figure 3 and Figure 5The door 11 is hinged to the body 12 of the refrigerator-freezer 1 through a first hinge 112 and a second hinge 113; the first hinge 112 and the second hinge 113 are respectively arranged on both sides of the door 11. A seal 114 is provided on the joint surface between the door 11 and the body 12; the door 11 seals the inside of the body 12 after being engaged with the body 12 through the seal 114. This hinged design makes the door 11 more stable when opening and closing, and is less likely to shake or get stuck. At the same time, the seal 114 between the door 11 and the body 12 is made of high-quality sealing materials, which ensures the sealing of the body 12, effectively prevents the leakage of cold air and the entry of hot air from the outside, thereby ensuring the stability of the temperature inside the body 12.

[0037] See also Figure 2 , a drainage hole is provided at the bottom of the inner tank 122, and the drainage hole is connected to a drainage pipe 18; the drainage pipe 18 passes through the insulation layer 124 and the outer shell 121 and extends to the outside of the outer shell 121; the drainage pipe 18 and the insulation layer 124 are sealed. A detachable plunger is provided in the drainage pipe 18. During the use of the refrigerator-freezer 1, some frost or water droplets are inevitably generated, especially in an environment with high humidity. In order to solve this problem, we designed a drainage hole at the bottom of the inner tank 122 and connected the drainage pipe 18. When frost or water droplets accumulate to a certain extent, they will flow into the drainage pipe 18 along the drainage hole, and finally be discharged to the outside of the refrigerator-freezer 1, thereby keeping the inside of the box body 12 dry and clean.

[0038] A seal is used between the drainage pipe 18 and the insulation layer 124, which ensures smooth drainage and prevents cold air from leaking out through the drainage pipe 18. At the same time, the plunger design in the drainage pipe 18 takes into account the actual needs of users. When drainage is not required, the user can insert the plunger into the drainage pipe 18 to close the pipe; when drainage is required, the plunger can be pulled out and frost or water droplets can be discharged smoothly.

[0039] See also Figure 2 and Figure 4The door 11 is provided with a door handle 115 at the other end where the first hinge 112 and the second hinge 113 are provided; a plug-in connector 116 is provided at one end of the door handle 115. The cabinet 12 is provided with an access member 125 at a position adapted to the plug-in connector 116; when the door 11 and the cabinet 12 are in a closed state, the plug-in connector 116 is inserted into the access member 125 to fix the door 11 on the cabinet 12. The plug-in connector 116 and the access member 125 are provided by using existing technologies, such as a self-locking buckle assembly. The settings of the plug-in connector 116 and the access member 125 are adaptively adjusted according to the actual size and position relationship of the refrigerator-freezer 1. The plug-in connector 116 is inserted into the access member 125 to lock, and the plug-in connector 116 is unlocked when it is pressed inward. This design makes the door 11 more stable when closed and not easy to be opened accidentally, thereby ensuring the stability of the internal temperature of the cabinet 12 and the preservation effect of food. The cooperation between the plug connector 116 and the access piece 125 also takes into account the convenience of user use, and is easy to operate and use. The door 11 adopts a multi-level sealing design to ensure that it can fit tightly when closed, effectively preventing the leakage of cold air. At the same time, the plug connector 116 on the door 11 is simple and practical in design. It only needs to be inserted into the access piece 125 when closing the door 11, and the door 11 can be firmly locked with a light press, which not only ensures the safety of the food, but also facilitates the use of the user.

[0040] Example 2

[0041] See also Figure 2 The embodiment of the utility model provides a portable refrigerator-freezer, which has the following effects: First, the detachable design of the refrigerator-freezer 1 allows the user to easily install or remove it from the mobile part as needed, which greatly increases the flexibility of use. Whether it is outdoor camping, picnics, or family short trips, it can be easily carried. The refrigerator-freezer 1 is also provided with a power supply component 13, so that the refrigeration and freezing effect can be maintained for a long time even when the power supply is disconnected. At the same time, the handle 111 design on the top of the door 11 allows the user to easily lift and carry the refrigerator-freezer 1 without worrying about the difficulty of moving. See Figure 3, the design of the inner liner 122 and the outer shell 121 of the refrigerator-freezer 1 also fully considers the refrigeration and freezing effect. The inner liner 122 is provided with a storage space 123, which can accommodate various foods and beverages to meet the storage needs of users. The outer surface of the inner liner 122 is provided with a condenser 161. Through the winding arrangement of the condenser 161 and the outer surface of the inner liner 122, refrigeration can be performed more effectively to ensure that the temperature in the storage space 123 is always maintained within the set range. At the same time, a heat preservation layer 124 is also provided on the outside of the condenser 161, which can better maintain the refrigeration effect inside the inner liner 122, reduce heat loss, and further improve the refrigeration and freezing effect. Finally, the mobile part is fixedly connected by the mounting seat 14 and the moving rod 141, so that the mobile part can stably support the refrigerator-freezer 1, which is easy to carry and move, and further improves the convenience of use. The portable refrigerator-freezer 1 brings a new user experience to users with its humanized design, flexible mobility, efficient refrigeration and freezing effect, and practical mobile part design. It is a very practical product.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A portable refrigerator-freezer, characterized in that: The refrigerator-freezer comprises a refrigerator (1) and a movable part; the refrigerator-freezer (1) is detachably mounted on the movable part; a power supply component (13) is provided on the movable part; the refrigerator-freezer (1) is electrically connected to the power supply component (13) when it is mounted on the movable part; a handle (111) is provided on the top of a door (11) of the refrigerator-freezer (1); The refrigerator-freezer (1) is provided with an inner liner (122) and an outer shell (121); a storage space (123) is provided inside the inner liner (122); the inner liner (122) is arranged inside the outer shell (121); a condenser (161) is provided on the outer surface of the inner liner (122); the condenser (161) and the outer surface of the inner liner (122) are arranged in a winding manner; a heat-insulating layer (124) is also provided outside the condenser (161); the heat-insulating layer (124) seals the outside of the condenser (161); The moving part comprises a mounting seat (14) and a moving rod (141); the moving rod (141) is arranged on one side of the mounting seat (14) and is fixedly connected to the mounting seat (14); and pulleys (142) are respectively provided on both sides of the bottom of the mounting seat (14) where the moving rod (141) is arranged.

2. A portable refrigerator-freezer according to claim 1, characterized in that: The top of the inner container (122) is sealedly connected to the outer shell (121); a cavity is provided between the bottom of the inner container (122) and the outer shell (121); and a small compressor (15) and a condenser (16) are provided in the cavity at the bottom of the storage space (123).

3. A portable refrigerator-freezer according to claim 2, characterized in that: An evaporator (17) is provided between the outside of the thermal insulation layer (124) and the inner surface of the outer shell (121); the evaporator (17), the small compressor (15) and the condenser (16) are connected via a condenser pipe (161); and the small compressor (15) and the condenser (16) are connected via a throttle valve.

4. A portable refrigerator-freezer according to claim 1, characterized in that: The pulley (142) is a universal wheel; the bottom of the mounting seat (14) is provided with brake components (143) on both sides of the other end where the pulley (142) is provided; the brake components (143) are arranged at the same height as the pulley (142).

5. The portable refrigerator-freezer according to claim 1, characterized in that: The door (11) is hingedly connected to the body (12) of the refrigerator-freezer (1) via a first hinged portion (112) and a second hinged portion (113); the first hinged portion (112) and the second hinged portion (113) are respectively arranged at positions on both sides of the door (11).

6. A portable refrigerator-freezer according to claim 5, characterized in that: A sealing member (114) is provided on the joint surface between the box door (11) and the box body (12); the box door (11) is joined to the box body (12) via the sealing member (114), thereby sealing the interior of the box body (12).

7. A portable refrigerator-freezer according to claim 1, characterized in that: A drainage hole is provided at the bottom of the inner tank (122), and the drainage hole is connected to a drainage pipe (18); the drainage pipe (18) passes through the thermal insulation layer (124) and the outer shell (121) and extends to the outside of the outer shell (121); and the drainage pipe (18) and the thermal insulation layer (124) are sealed.

8. A portable refrigerator-freezer according to claim 7, characterized in that: A detachable plunger is provided in the drainage pipe (18).

9. The portable refrigerator-freezer according to claim 5, characterized in that: The cabinet door (11) is provided with a door handle (115) at the other end where the first hinge part (112) and the second hinge part (113) are provided; one end of the door handle (115) is provided with a plug-in connector (116).

10. A portable refrigerator-freezer according to claim 9, characterized in that: The box body (12) is provided with an insertion piece (125) at a position matching the plug-in piece (116); when the box door (11) and the box body (12) are in a closed state, the plug-in piece (116) is inserted into the insertion piece (125) to fix the box door (11) to the box body (12).

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