Air duct structure, cold storage and discharge equipment and refrigerating and heating equipment

Abstract

The invention discloses an air duct structure, cold storage and discharge equipment and refrigerating and heating equipment, and the air duct structure comprises an air inlet duct communicated with the outside atmosphere; the exhaust duct is provided with a first air duct and a second air duct which are respectively communicated with the air inlet duct; the first air channel is suitable for containing the cold dissipation end of the cold discharging assembly, and the second air channel is suitable for containing the heat dissipation end of the cold storage assembly. The fan assembly is provided with a first fan suitable for blowing external air to the first air channel and a second fan suitable for blowing the external air to the second air channel. The first fan and the second fan operate at the same time, so that the first air duct and the second air duct blow air at the same time, and external air is sucked into the first air duct and the second air duct. When the cold releasing assembly releases cold, the external air blown to the second air duct can reduce the temperature of the heat dissipation end of the cold storage assembly, at the moment, the cold storage assembly can be started, the cold storage assembly and the cold releasing assembly are made to operate at the same time, and therefore the standby time of the cold storage box can be remarkably prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of cold storage devices, and particularly to an air duct structure, a cold storage and cold release device, and a refrigeration and heating device. Background Art

[0002] Air conditioning systems are common household appliances. Generally, air conditioners cover the indoor living room and bedroom, but cannot cover the kitchen and bathroom spaces. However, there is also a demand for air conditioning in the kitchen and bathroom spaces. When there is a lot of heat in these spaces, the heat cannot be discharged in time, affecting the normal use of these spaces. Take the bathroom ceiling heater as an example. The ceiling heater has an air inlet and an air outlet. When working, it uses a fan to agitate the air flow. Cold air enters from the air inlet, flows through the PTC ceramic heating element, and blows out as warm air. The hot air circulates to drive the indoor temperature to rise. Ceiling heaters usually only have heating and air exchange functions, but do not have a refrigeration function. When the bathroom is relatively hot, the heat cannot be discharged in time only through the ceiling heater, affecting the user experience of using the bathroom.

[0003] If a cold storage and cold release device is installed in the kitchen and bathroom spaces, when the cold storage and cold release device is refrigerating, it cannot store cold at the same time, shortening the standby time of the cold storage tank. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the current cold storage and cold release device cannot store cold while refrigerating, so as to provide an air duct structure, a cold storage and cold release device, and a refrigeration and heating device.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] An air duct structure, the air duct structure is arranged inside the electrical appliance, and the air duct structure includes:

[0007] An air inlet duct, which is connected to the outside atmosphere;

[0008] An air exhaust duct, which has a first duct and a second duct respectively connected to the air inlet duct; the first duct is suitable for placing the cold release end of the cold release component, and the second duct is suitable for placing the heat dissipation end of the cold storage component;

[0009] A fan assembly, which has a first fan suitable for blowing the outside air to the first duct and a second fan suitable for blowing the outside air to the second duct.

[0010] Further optimizing the technical solution, the first duct is divided into a cold air duct and a hot air duct; the cold air duct is suitable for placing the cold release end of the cold release component, and the hot air duct is suitable for placing the PTC heating element.

[0011] Further optimize the technical solution. A first air damper is provided inside the first air duct. The first air damper has a first position and a second position. When the first air damper is in the first position, the cold air duct is in communication with the air inlet duct. When the first air damper is in the second position, the hot air duct is in communication with the air inlet duct.

[0012] Further optimize the technical solution. The second air duct includes at least one sub-duct.

[0013] When the number of sub-ducts is two, the second air duct is divided into an exhaust air duct and a cold storage air duct. The cold storage air duct is adapted to hold the heat dissipation end of the cold storage component. A second air damper is provided inside the second air duct. The second air damper has a third position and a fourth position. When the second air damper is in the third position, the exhaust air duct is in communication with the air inlet duct. When the second air damper is in the fourth position, the cold storage air duct is in communication with the air inlet duct.

[0014] Further optimize the technical solution. The air inlet ends of the first air duct and the second air duct are in communication and share the same air wheel.

[0015] Further optimize the technical solution. The first fan and the second fan are driven by the same motor or by different motors respectively.

[0016] Further optimize the technical solution. The outer diameters of the first fan and the second fan are the same or different.

[0017] A cold storage and cold release device, comprising:

[0018] The air duct structure as described above;

[0019] A cold storage box;

[0020] A cold release component, the heat dissipation end of which is arranged in the first air duct and is adapted to release the cold quantity in the cold storage box;

[0021] A cold storage component, the heat dissipation end of which is arranged in the second air duct and is adapted to provide a cold source for the cold storage box.

[0022] A refrigeration and heating device, comprising:

[0023] The air duct structure as described above;

[0024] A cold storage box;

[0025] A cold release component, the heat dissipation end of which is arranged in the cold air duct of the first air duct and is adapted to release the cold quantity in the cold storage box;

[0026] A PTC heating element is arranged in the hot air duct of the first air duct and is adapted to heat the blown-in outside air into hot air;

[0027] A cold storage component, the heat dissipation end of which is arranged in the second air duct and is adapted to provide a cold source for the cold storage box.

[0028] Further optimize the technical solution, and the refrigeration and heating device is a ceiling heater.

[0029] The technical solution of the present invention has the following advantages:

[0030] 1. The air duct structure provided by the present invention is arranged inside the electrical appliance, providing an installation space for the cold storage and cold release device. Therefore, the cold storage and cold release device can be arranged in the air duct structure, and the indoor space can be cooled through the cold storage and cold release device. The first fan and the second fan operate simultaneously, so that the first air duct and the second air duct blow air at the same time, and the outside air pumped by the air inlet duct is blown into the first air duct and the second air duct, and the outside air cools the heat dissipation end of the cold storage component in the second air duct. Furthermore, when the cold release component releases cold, the outside air blown into the second air duct can reduce the temperature of the heat dissipation end of the cold storage component. At this time, the cold storage component can be started, so that the cold storage component and the cold release component operate simultaneously. After the cold in the cold storage tank is discharged, the cold storage component can input new cold into the cold storage tank, thus significantly increasing the standby time of the cold storage tank.

[0031] 2. In the air duct structure provided by the present invention, the first air duct is divided into a cold air duct and a hot air duct. Therefore, the present invention can simultaneously place the PTC heating element and the cold release component in the first air duct, so that the air duct structure in the present invention can discharge cold air and hot air, and whether to start the PTC heating element can be selected.

[0032] 3. In the air duct structure provided by the present invention, a first air damper is arranged inside the first air duct, and the first air damper has a first position and a second position. When the first air damper is in the first position, the cold air duct is connected to the air inlet duct. At this time, the outside air introduced into the cold air duct can carry the cold in the cold storage tank and then be discharged to the indoor, realizing the refrigeration operation. When the first air damper is in the second position, the hot air duct is connected to the air inlet duct, and the air entering the hot air duct can carry the heat of the PTC heating element and then be discharged to the indoor, realizing the heating operation.

[0033] 4. In the air duct structure provided by the present invention, the second air duct is a single air duct or a double air duct.

[0034] When the second air duct is a dual air duct, the second air duct is divided into an exhaust air duct and a cold storage air duct. The cold storage air duct is adapted to hold the heat dissipation end of the cold storage component. A second air damper is provided inside the second air duct. The second air damper has a third position and a fourth position. When the second air damper is in the third position, the exhaust air duct is connected to the intake air duct, and normal exhaust operation can be performed at this time. When the second air damper is in the fourth position, the cold storage air duct is connected to the intake air duct, and the outside air entering the cold storage air duct can dissipate heat from the hot end of the cold storage component, and thus the cold storage component can provide cold for the cold storage box. Furthermore, when cold storage is not performed, the second air duct can be switched to the third position, and the outside air will no longer pass through the heat exchange end of the cold storage component, thereby effectively reducing the wind resistance.

[0035] 5. For the air duct structure provided by the present invention, the first fan and the second fan are driven by the same motor or are respectively driven by different motors. The outer diameters of the first fan and the second fan are the same or different. Since the blowing effects that the fan assembly can achieve are different when the outer diameters of the fan assemblies are different, the present invention can select the outer diameters of the first fan and the second fan according to the actual situation.

[0036] 6. For the cold storage and cold release device provided by the present invention, the heat exchange end of the cold storage component is the first heat exchanger, and the heat exchange end of the cold release component is the second heat exchanger. The first heat exchanger is arranged in the second air duct, and the second heat exchanger is arranged in the first air duct. When the first fan and the second fan are running, the first heat exchanger and the first heat exchanger can be blown simultaneously. Thus, when the cold release component releases cold, the outside air blown into the second air duct can reduce the temperature of the heat dissipation end of the cold storage component. At this time, the cold storage component can be started, so that the cold storage component and the cold release component run simultaneously. After the cold in the cold storage box is discharged, the cold storage component can input new cold into the cold storage box, thereby significantly increasing the standby time of the cold storage box.

[0037] 7. For the cold storage and cold release device provided by the present invention, the refrigeration and heating device is a bathroom heater, that is, the air duct structure and the cold storage and cold release device are arranged on the bathroom heater, so that the bathroom heater can perform refrigeration while being able to perform heating and ventilation. Furthermore, when the temperature in the bathroom is relatively high, the cold storage and cold release device operates, and at this time the bathroom heater is in the cold release state, discharging cold air to the bathroom, effectively reducing the temperature of the bathroom. And when installing the cold storage and cold release device of the present invention, there is no need to reserve holes on the walls of the kitchen and bathroom, greatly reducing the installation cost. An air duct is independently opened in the household electrical appliance, which does not affect the operation of the household electrical appliance. Description of the Drawings

[0038] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0039] Figure 1 It is a schematic structural diagram of the air duct structure provided in Embodiment 1 of the present invention.

[0040] Figure 2 It is another schematic structural diagram of the air duct structure provided in Embodiment 1 of the present invention.

[0041] Figure 3 It is a schematic structural diagram when the second air duct in the air duct structure provided in Embodiment 2 of the present invention is a single air duct.

[0042] Figure 4 It is a schematic structural diagram when the second air duct in the air duct structure provided in Embodiment 2 of the present invention is a double air duct.

[0043] Figure 5 It is a schematic structural diagram of a first air duct in the air duct structure provided in Embodiment 2 of the present invention.

[0044] Figure 6 It is another schematic structural diagram of the first air duct of the air duct structure provided in Embodiment 2 of the present invention.

[0045] Figure 7 It is a schematic diagram of the principle of the cold storage and cold release device provided in Embodiment 3 of the present invention.

[0046] Reference numerals:

[0047] 1, first air duct; 2, second air duct; 3, first fan; 4, second fan; 5, first motor; 6, second motor; 7, cold storage tank; 8, cold storage component; 81, first heat exchanger; 82, cold storage pipeline; 83, compressor; 84, expansion valve; 9, cold release component; 91, second heat exchanger; 92, cold dissipation pipeline; 93, on-off valve; 94, delivery pump; 101, first air damper; 102, second air damper; 11, PTC heating element; 12, ventilation opening; 13, exhaust opening; 14, air duct partition. Detailed embodiments

[0048] The following will clearly and completely describe the technical solutions of the present invention with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0049] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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 should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0050] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0052] Embodiment 1

[0053] As Figure 1 and Figure 2 shown, this embodiment discloses an air duct structure, which is arranged inside a kitchen and bathroom appliance. The air duct structure includes an air inlet duct, an air exhaust duct, and a fan assembly.

[0054] The air inlet duct is in communication with the outside atmosphere and is adapted to allow outside cold air to enter.

[0055] The air exhaust duct has a first duct 1 and a second duct 2 that are respectively in communication with the air inlet duct. A duct partition 14 is provided between the first duct 1 and the second duct 2. The first duct 1 is adapted to hold the cold-dissipating end of the cold-dissipating component, and the second duct 2 is adapted to hold the heat-dissipating end of the cold-storage component. The outlet end of the second duct 2 is a ventilation opening 12, and the outlet end of the first duct 1 is an exhaust opening 13.

[0056] The fan assembly has a first fan 3 and a second fan 4. The first fan 3 corresponds to the first duct 1, and the first fan 3 is adapted to blow outside air to the first duct 1. The second fan 4 corresponds to the second duct 2, and the second fan 4 is adapted to blow outside air to the second duct 2.

[0057] The above air duct structure is arranged inside the kitchen and bathroom appliances, providing an installation space for the cold storage and release device. Therefore, the cold storage and release device can be arranged in the air duct structure, and the temperature of the kitchen and bathroom space can be reduced through the cold storage and release device, improving the user experience of using the kitchen and bathroom. More importantly, the first fan 3 and the second fan 4 operate simultaneously, causing the first air duct 1 and the second air duct 2 to blow air at the same time, and blowing the outside air pumped by the intake air duct into the first air duct 1 and the second air duct 2, and using the outside air to cool the heat dissipation end of the cold storage component in the second air duct 2. Furthermore, when the cold release component releases cold, the outside air blown into the second air duct 2 can reduce the temperature of the heat dissipation end of the cold storage component. At this time, the cold storage component can be started, enabling the cold storage component and the cold release component to operate simultaneously. After the cold in the cold storage tank 7 is discharged, the cold storage component can input new cold into the cold storage tank, thereby significantly increasing the standby time of the cold storage tank.

[0058] As a specific implementation manner, the first air duct 1 and the second air duct 2 are horizontally arranged from bottom to top respectively. Vertical air ducts are provided at the intake ends of the first air duct 1 and the second air duct 2. The first fan 3 and the second fan 4 are sequentially arranged in the vertical air ducts from bottom to top. And the vertical air ducts are communicated with the intake air duct. The intake ends of the first air duct 1 and the second air duct 2 are communicated and share the same air wheel.

[0059] As a specific implementation manner, the first fan and the second fan are driven by the same motor or by different motors respectively. When the first fan and the second fan are driven by the same motor, the drive shaft of one motor is respectively connected to the rotating shafts of the first fan and the second fan, causing the first fan and the second fan to rotate synchronously. When the first fan and the second fan are driven by different motors respectively, the motors can be divided into a first motor 5 and a second motor 6. Among them, the first motor 5 is connected to the rotating shaft of the first fan 3, and the second motor 6 is connected to the rotating shaft of the second fan 4. At this time, the first fan and the second fan can rotate synchronously or asynchronously.

[0060] The outer diameters of the first fan and the second fan are the same or different. Since the blowing effects achieved by the fan assemblies are different when the outer diameters of the fan assemblies are different, in this embodiment, the outer diameters of the first fan and the second fan can be selected according to the actual situation.

[0061] Embodiment 2

[0062] As shown in Figures 1 to 6 This embodiment discloses an air duct structure. On the basis of Embodiment 1, this embodiment further improves the structures of the first air duct 1 and the second air duct 2.

[0063] The first air duct 1 is divided into a cold air duct and a hot air duct. The cold air duct is suitable for accommodating the cold-dissipating end of the cold-dissipating component, and the hot air duct is suitable for accommodating the PTC heating element 11. Furthermore, in this embodiment, the PTC heating element 11 and the cold-dissipating component can be accommodated in the first air duct at the same time. When the first fan operates, the outside air can enter the cold air duct and the hot air duct respectively. The air entering the cold air duct can carry the cold quantity in the cold storage tank and then be discharged to the room, and the air entering the hot air duct can carry the heat of the PTC heating element 11 and then be discharged to the room.

[0064] As a further improved embodiment, a first air damper 101 is arranged inside the first air duct 1. The first air damper 101 has a first position and a second position. When the first air damper 101 is in the first position, the cold air duct is connected to the air inlet duct. At this time, the outside air introduced into the cold air duct can carry the cold quantity in the cold storage tank and then be discharged to the room to realize the refrigeration operation. When the first air damper 101 is in the second position, the hot air duct is connected to the air inlet duct. The air entering the hot air duct can carry the heat of the PTC heating element and then be discharged to the room to realize the heating operation.

[0065] As a further improved embodiment, the second air duct 2 is a single air duct. When the second air duct 2 is a single air duct, the heat-dissipating end of the cold storage component can be accommodated inside the second air duct 2. However, the cold storage component will generate a certain resistance to the passing air.

[0066] As an alternative embodiment, the second air duct 2 of this embodiment can also be set as a double air duct. When the second air duct 2 is a double air duct, the second air duct 2 is divided into an exhaust air duct and a cold storage air duct. The cold storage air duct is suitable for accommodating the heat-dissipating end of the cold storage component. A second air damper 102 is arranged inside the second air duct 2. The second air damper has a third position and a fourth position; when the second air damper is in the third position, the exhaust air duct is connected to the air inlet duct. At this time, normal exhaust operation can be carried out; when the second air damper is in the fourth position, the cold storage air duct is connected to the air inlet duct. At this time, the outside air entering the cold storage air duct can dissipate the heat of the hot end of the cold storage component. Furthermore, the cold storage component can provide cold quantity for the cold storage tank. Furthermore, when cold storage is not carried out, the second air duct can be switched to the third position, and the outside air will no longer pass through the heat exchange end of the cold storage component, thereby effectively reducing the air resistance.

[0067] Embodiment 3

[0068] As Figures 1 to 7 shown, this embodiment discloses a cold storage and cold-dissipating device, including an air duct structure, a cold storage tank 7, a cold-dissipating component 9, and a cold storage component 8.

[0069] The air duct structure can adopt the air duct structure in Embodiment 1 or Embodiment 2.

[0070] The heat dissipation end of the cold release component 9 is arranged in the first air duct 1 and is adapted to release the cold quantity in the cold storage box. The cold release component 9 includes a second heat exchanger 91, a heat dissipation pipeline 92, a on-off valve 93 and a delivery pump 94. The second heat exchanger 91 has a heat exchange channel and heat exchange fins, and there is a heat exchange medium in the heat exchange channel. The heat dissipation pipeline 92 is communicated with the heat exchange channel to form a circulating pipeline, and the heat dissipation pipeline 92 exchanges heat with the cold storage medium in the cold storage box. The on-off valve 93 is arranged on the heat dissipation pipeline 92 and is adapted to control the on-off of the heat dissipation pipeline 92. The delivery pump 94 is arranged on the heat dissipation pipeline 92 and is adapted to pump the heat exchange medium in the heat exchange channel to the cold storage box to exchange heat with the cold storage medium in the cold storage box.

[0071] The heat dissipation end of the cold storage component 8 is arranged in the second air duct 2 and is adapted to provide a cold source for the cold storage box. The cold storage component 8 includes a first heat exchanger 81, a cold storage pipeline 82, a compressor 83 and an expansion valve 84. The first heat exchanger 81 has a heat exchange channel and heat exchange fins, and there is a heat exchange medium in the heat exchange channel. The cold storage pipeline 82 is communicated with the heat exchange channel to form a circulating pipeline, and the cold storage pipeline 82 exchanges heat with the cold storage medium in the cold storage box. The expansion valve 84 is arranged on the cold storage pipeline 82 and is adapted to control the on-off of the cold storage pipeline 82. The compressor 83 is arranged on the cold storage pipeline 82.

[0072] In this embodiment, the heat exchange end of the cold storage component 8 is the first heat exchanger 81, and the heat exchange end of the cold release component 9 is the second heat exchanger 91. More specifically, the first heat exchanger 81 is arranged in the second air duct 2, and the second heat exchanger 91 is arranged in the first air duct 1. When the first fan and the second fan are running, the first heat exchanger 81 and the first heat exchanger 81 can be blown simultaneously. Furthermore, when the cold release component releases cold, the external air blown into the second air duct 2 can reduce the temperature of the heat dissipation end of the cold storage component. At this time, the cold storage component can be started, so that the cold storage component and the cold release component run simultaneously. After the cold quantity in the cold storage box is discharged, the cold storage component can input new cold quantity into the cold storage box, thereby significantly improving the standby time of the cold storage box.

[0073] Embodiment 4

[0074] As Figures 1 to 7 shown, this embodiment discloses a refrigeration and heating device, including an air duct structure, a cold storage box, a cold release component 9, a PTC heating element 11 and a cold storage component 8.

[0075] The air duct structure adopts the air duct structure in Embodiment 2, that is, the first air duct 1 in this embodiment is divided into a cold air duct and a hot air duct.

[0076] The heat dissipation end of the cold release component 9 is arranged in the cold air duct of the first air duct 1 and is adapted to release the cold quantity in the cold storage box. The specific structure of the cold release component 9 is the same as the specific structure of the cold release component in Embodiment 3.

[0077] The cold storage component 8 is arranged in the second air duct 2 and is adapted to provide a cold source for the cold storage tank. The specific structure of the cold storage component 8 is the same as that of the cold storage component in Embodiment 3.

[0078] The PTC heating element 11 is arranged in the hot air duct of the first air duct 1 and is adapted to heat the blown external air into hot air, that is, to realize the heating function of the device.

[0079] The refrigeration and heating device in this embodiment is a bathroom heater, that is, the air duct structure and the cold storage and cold release device are arranged on the bathroom heater, so that the bathroom heater can not only heat and ventilate, but also refrigerate. Furthermore, when the temperature in the bathroom is relatively high, the cold storage and cold release device operates, and at this time the bathroom heater is in the cold release state, exhausting the cold air to the bathroom, effectively reducing the temperature of the bathroom. And when installing the cold storage and cold release device in this embodiment, there is no need to reserve holes on the walls of the kitchen and bathroom, greatly reducing the installation cost. An air duct is independently opened in the household electrical appliance, and it does not affect the operation of the household electrical appliance.

[0080] The operation process of the refrigeration and heating device in this embodiment is as follows:

[0081] When releasing cold, the cold air duct of the first air duct 1 blows cold air to the indoor space, and there is also air flow passing through the heat dissipation end of the cold storage component in the second air duct 2, so that the cold storage component in the cold storage and cold release device can continue to work and provide cold energy for the cold storage water tank, significantly improving the standby time of the cold storage tank.

[0082] When exhausting air normally, as Figure 4 shown, the air in the second air duct 2 is exhausted through the air duct without a heat exchanger.

[0083] When storing cold, the second air damper 102 is switched, and the air passes through the first heat exchanger 81. At this time, the external air can cool the first heat exchanger 81. And the blown external air can also reduce the accumulation of dirt on the first heat exchanger and improve the heat exchange efficiency.

[0084] As Figure 6 shown, when heating normally, the first air damper 101 is switched. The first air damper 101 is switched to the second position, and the hot air duct is connected to the air inlet duct. The external air passes through the PTC heating element 11 and blows into the room from the exhaust port 13.

[0085] When refrigerating, the first air damper 101 is switched to the first position, switching the air valve, and the cold air duct is connected to the air inlet duct. The external air blows the cold energy dissipated by the second heat exchanger 91 into the room.

[0086] Obviously, the above embodiments are merely examples given for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom still fall within the protection scope of the present invention.

Claims

1. Air duct structure Characterized in that The air duct structure is arranged inside the electrical appliance, and the air duct structure includes: An intake air duct, which is connected to the outside atmosphere; An exhaust air duct having a first air duct (1) and a second air duct (2) respectively connected to the intake air duct; the first air duct (1) is adapted to hold the cold-dissipating end of the cold-dissipating component, and the second air duct (2) is adapted to hold the heat-dissipating end of the cold-storage component; A fan assembly having a first fan (3) adapted to blow the outside air to the first air duct (1) and a second fan (4) adapted to blow the outside air to the second air duct (2).

2. The air duct structure according to claim 1 Characterized in that The first air duct (1) is divided into a cold air duct and a hot air duct; the cold air duct is adapted to hold the cold-dissipating end of the cold-dissipating component, and the hot air duct is adapted to hold the PTC heating element (11).

3. The air duct structure according to claim 2 Characterized in that A first air damper (101) is arranged inside the first air duct (1), and the first air damper (101) has a first position and a second position; when the first air damper (101) is in the first position, the cold air duct is connected to the intake air duct; when the first air damper (101) is in the second position, the hot air duct is connected to the intake air duct.

4. The air duct structure according to any one of claims 1-3 Characterized in that The second air duct (2) includes at least one sub-air duct; When the number of the sub-air ducts is two, the second air duct (2) is divided into an exhaust air duct and a cold-storage air duct, and the cold-storage air duct is adapted to hold the heat-dissipating end of the cold-storage component; a second air damper (102) is arranged inside the second air duct (2), and the second air damper has a third position and a fourth position; when the second air damper is in the third position, the exhaust air duct is connected to the intake air duct; when the second air damper is in the fourth position, the cold-storage air duct is connected to the intake air duct.

5. The air duct structure according to any one of claims 1-3 Characterized in that The intake ends of the first air duct (1) and the second air duct (2) are connected and share the same impeller.

6. The air duct structure according to any one of claims 1-3 Characterized in that The first fan and the second fan are driven by the same motor or are respectively driven by different motors.

7. The air duct structure according to any one of claims 1-3 Characterized in that The outer diameters of the first fan and the second fan are the same or different.

8. Cold-storage and cold-dissipating equipment Characterized in that Including: The air duct structure according to any one of claims 1-7; A cold-storage box; A cold-dissipating component (9) whose cold-dissipating end is arranged in the first air duct (1) and is adapted to release the cold quantity in the cold-storage box; A cold-storage component (8) whose heat-dissipating end is arranged in the second air duct (2) and is adapted to provide a cold source for the cold-storage box.

9. Refrigeration and heating equipment Characterized in that Including: The air duct structure according to any one of claims 2-7; A cold-storage box; A cold-dissipating component (9) whose cold-dissipating end is arranged in the cold air duct of the first air duct (1) and is adapted to release the cold quantity in the cold-storage box; A PTC heating element (11) is disposed in the hot air duct of the first air duct (1) and is adapted to heat the blown-in outside air into hot air; A cold storage component (8) has its heat dissipation end disposed in the second air duct (2) and is adapted to provide a cold source for the cold storage box.

10. The refrigeration and heating device according to claim 9, characterized in that, the refrigeration and heating device is a ceiling heater.

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