Front fan cover capable of reducing air outlet temperature of fan and fan with front fan cover

Abstract

The utility model relates to the technical field of household appliances, and provides a front fan cover capable of reducing the air outlet temperature of a fan and the fan thereof.The front fan cover is provided with a front-back through compression channel, a rear end opening of the compression channel is round, a front end opening of the compression channel is rounded rectangle, and a partition plate is further arranged in the middle of the front end opening. The compression channel is used for conducting throttling expansion on air entering from the rear end of the front fan cover so that the air outlet temperature of the fan can be reduced, and a plurality of installation parts are arranged at the rear end of the front fan cover and used for installation of the front fan cover. The compression channel with the front end opening in the rounded rectangle shape is formed in the front fan cover, efficient throttling and expansion of air flowing are achieved, and therefore the cooling performance of the fan is improved. The partition plate is arranged in the middle of the front-end opening of the compression channel, so that the cooling effect is improved, and the number of the compression channels is prevented from being increased; the compression channel is arranged in the front fan cover, so that a user can maintain the cleanness and sanitation of the fan more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a front fan cover capable of reducing the air outlet temperature of a fan and a fan thereof. Background Art

[0002] As a common household appliance, fans are widely used in homes, offices and public places, providing people with a comfortable environment with their simple, economical and energy-saving features. The working principle of a fan is to drive the fan blades to rotate through a motor, thereby generating airflow, accelerating the flow of air, and taking away heat, thereby achieving the purpose of lowering the ambient temperature and improving human comfort. However, as people's requirements for quality of life increase, the cooling effect of traditional fans can no longer meet the needs of some users, especially in high temperature environments, the cooling effect of traditional fans is not ideal.

[0003] Although there are some technologies on the market that use the principle of air throttling and expansion to reduce the temperature of the fan's air outlet, these technologies still have some shortcomings in practical applications. For example, in the patent with the announcement number "CN214887941U" and the name "a front wind shield plate and a fan capable of reducing the blowing temperature of the fan", the front panel of the front wind shield plate is densely covered with a number of tapered tubes that can cause air throttling and expansion. The air inlet end of the tapered tube runs from the front panel of the front wind shield plate to the rear panel. When the air flows to the air outlet, the flow area becomes smaller, the flow rate increases, and the temperature of the blown air is reduced. Although this patent can reduce the fan's air outlet temperature to a certain extent, it still has the following shortcomings: First, the circular air outlet end of the tapered tube has a large opening, and the temperature reduction of the air when passing through the throttling part is limited, which cannot effectively meet the user's demand for lower temperature airflow. Secondly, the number of tapered tubes is large, which not only increases the difficulty of production and manufacturing, but also increases the cost accordingly. Finally, since the tapered tubes are evenly distributed on the outer surface of the front wind shield plate, there are many sanitary dead corners, which are easy to accumulate dust and dirt, and cleaning and maintenance work become relatively difficult. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a front fan cover and a fan thereof which can reduce the air outlet temperature of the fan.

[0005] A front fan cover that can reduce the fan outlet temperature is provided with a compression channel that runs through front and back, the rear end opening of the compression channel is circular, and the front end opening of the compression channel is a rounded rectangle. The compression channel is used to throttle and expand the air entering from the rear end of the front fan cover to reduce the fan outlet temperature. The rear end of the front fan cover is provided with a mounting portion for mounting the front fan cover.

[0006] Furthermore, a partition is provided in the middle of the front end opening of the compression channel.

[0007] Furthermore, the compression channels are distributed in multiple circles and form a ring array.

[0008] Furthermore, the mounting portion includes a front mounting block and a buckle. Front mounting blocks are provided at the rear ends of the left and right sides and the bottom of the front fan cover, and a buckle is provided at the rear end of the top of the front fan cover.

[0009] Furthermore, a notch is provided in the middle of the rear end of the buckle.

[0010] A fan that uses a front fan cover that can reduce the fan outlet temperature includes a base, a vertical support sleeve fixedly connected to the center of the top of the base, a driving member is provided on the top of the support sleeve, a rear fan cover is fixedly connected to the front end of the driving member, the rear fan cover is fixedly connected to the front fan cover, and a fan blade is fixedly connected to the output shaft of the driving member, and the fan blade is located between the rear fan cover and the front fan cover.

[0011] Furthermore, an adjusting knob is sleeved on the outer periphery of the top of the supporting sleeve, a main control panel is provided above the supporting sleeve, a supporting rod is provided at the lower end of the main control panel, the supporting rod extends into the interior of the supporting sleeve, the adjusting knob is used to fix the main control panel, an adjusting block is hinged on the top of the main control panel, and a driving member is rotatably connected to the top of the adjusting block.

[0012] Furthermore, the rear fan cover is provided with a rear mounting block, and the rear mounting block is fixedly connected to the mounting portion.

[0013] Furthermore, a damper is provided at the connection between the adjustment block and the main control panel, and the direction of the driving member is adjusted by rotating the adjustment block, thereby adjusting the air outlet direction of the fan.

[0014] Furthermore, the rear mounting block is arranged on the left and right sides and the bottom of the rear fan cover.

[0015] Among them, throttling expansion refers to the process of adiabatic expansion of a fluid (gas or liquid) at a higher pressure through a porous plug (or throttle valve) to a lower pressure. Adiabatic expansion means that there is no heat exchange with the outside world, but the gas does work on the outside world and the gas expands. According to the first law of thermodynamics, it can be proved that this is an isenthalpic process. In this process, the volume of the gas increases, the pressure decreases, and thus the temperature decreases. Therefore, adiabatic expansion is often used to reduce the temperature of the gas, which has a freezing effect.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. By setting a compression channel with a rounded rectangular front opening inside the front fan cover, efficient throttling and expansion of air flow is achieved. This design not only improves the efficiency of air flow, but also reduces the temperature of air when passing through the compression channel through the throttling expansion effect, thereby improving the cooling performance of the fan and providing users with a more comfortable use experience.

[0018] 2. By setting a partition in the middle of the front opening of the compression channel, it limits the opening size of the compression channel while ensuring air circulation, avoiding the cooling effect affected by too large an opening. In addition, this design also helps to control production costs because it avoids the additional manufacturing costs caused by increasing the number of compression channels, achieving a balance between cost and effect.

[0019] 3. By setting a compression channel inside the front fan cover, not only the air flow path is optimized, but also the sanitary dead corners outside the fan are reduced. This design makes cleaning easier, and users can more conveniently maintain the cleanliness of the fan. It also improves the fan's aesthetics and overall usage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the drawings required for describing the specific implementation or the prior art will be briefly introduced below. Obviously, the drawings described below are only one implementation of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 The invention discloses a front fan cover capable of reducing the air outlet temperature of a fan and a schematic diagram of the fan structure thereof.

[0022] Figure 2 The invention discloses a front fan cover and an exploded diagram of a fan structure capable of reducing the air outlet temperature of the fan.

[0023] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0024] Figure 4 The rear side view of the front fan cover Figure 1 .

[0025] Figure 5 The rear side view of the front fan cover Figure 2 .

[0026] Figure 6 This is the left side view of the front fan cover.

[0027] Figure 7 yes Figure 4 Middle BB section view.

[0028] Figure 8 yes Figure 5 A partial enlarged view of point C in the middle.

[0029] Fig. 9 yes Figure 5 A partial enlarged view of point D in the middle.

[0030] The markings in the accompanying drawings are: 1. base; 2. support sleeve; 3. adjustment knob; 4. main control panel; 5. adjustment block; 6. drive member; 7. rear fan cover; 71. rear mounting block; 8. fan blades; 9. front fan cover; 91. front mounting block; 92. buckle; 93. compression channel; 94. partition. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the utility model easy to understand, the technical scheme in the specific implementation mode of the utility model is clearly and completely described below to further illustrate the utility model. Obviously, the specific implementation mode described is only a part of the implementation mode of the utility model, rather than all styles.

[0032] Example 1: Figures 4 to 9 As shown, a front fan cover 9 capable of reducing the temperature of the fan outlet air is provided with a compression channel 93 that passes through from front to back, the compression channel 93 is distributed in multiple circles and is in a ring array, the rear end opening of the compression channel 93 is circular, and the front end opening of the compression channel 93 is a rounded rectangle, the compression channel 93 is used to throttle and expand the air entering from the rear end of the front fan cover 9, so as to reduce the fan outlet air temperature. The rear end of the front fan cover 9 is provided with a plurality of mounting parts for mounting the front fan cover 9, the mounting parts include a front mounting block 91 and a buckle 92, the rear ends of the left and right sides of the front fan cover 9 and the rear end of the bottom are provided with front mounting blocks 91, the rear end of the top of the front fan cover 9 is provided with a buckle 92, and the middle of the rear end of the buckle 92 is provided with a notch.

[0033] The front fan cover 9 is formed by an integrated molding process and the material used is plastic. In order to reduce the difficulty of designing and manufacturing the mold and reduce the production cost of the front fan cover 9, the number of the compression channels 93 should not be too large, but in order to ensure the cooling effect, the front end opening of the compression channel 93 should not be too large. In this embodiment, a partition plate 94 is provided in the middle of the front end opening of the compression channel 93 to ensure that the front end opening of each compression channel 93 is two rounded rectangular air outlets, and the two air outlets share one compression channel 93, which not only ensures that the front end opening is not too large but also avoids an increase in the number of the compression channels 93.

[0034] Example 2: Figures 1 to 3As shown, a fan adopts a front fan cover 9 which can reduce the air outlet temperature of the fan, comprises a base 1, a vertical support sleeve 2 is fixedly connected to the center of the top of the base 1, an adjusting knob 3 is sleeved on the outer periphery of the top of the support sleeve 2, a main control panel 4 is arranged above the support sleeve 2, a support rod is arranged at the lower end of the main control panel 4, the support rod extends into the support sleeve 2, the adjusting knob 3 is used to fix the main control panel 4, the installation height of the main control panel 4 can be adjusted by loosening the adjusting knob 3, and the user can select the required installation height according to actual needs, an adjusting block 5 is rotatably connected to the top of the main control panel 4, a driving member 6 is rotatably connected to the top of the adjusting block 5, and the adjusting block 5 is rotatably connected to the main control panel 4. A damping is provided at the connection of the panel 4. The direction of the driving member 6 is adjusted by rotating the adjusting block 5, thereby adjusting the overall air outlet direction of the fan. When the user selects the head shaking mode, the driving member 6 can rotate on the adjusting block 5 to achieve a wind sweeping effect. The front end of the driving member 6 is fixedly connected to a rear fan cover 7. The left and right sides and the bottom of the rear fan cover 7 are provided with rear mounting blocks 71. The rear mounting block 71 is fixedly connected to the front mounting block 91. The notch of the buckle 92 is engaged with the metal rod of the rear fan cover 7, thereby realizing the fixed connection between the rear fan cover 7 and the front fan cover 9. The output shaft of the driving member 6 is fixedly connected to a fan blade 8, and the fan blade 8 is located between the rear fan cover 7 and the front fan cover 9.

[0035] The above describes the main technical features and basic principles of the utility model and the related advantages. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary specific implementations, and the utility model can be implemented in other specific forms without departing from the concept or basic features of the utility model. Therefore, no matter from which point of view, the above specific implementations should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the utility model.

[0036] In addition, it should be understood that although the present specification is described according to various implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A front fan cover capable of reducing the air outlet temperature of a fan, characterized in that: The front fan cover (9) is provided with a compression passage (93) which passes through from front to back. The rear end opening of the compression passage (93) is circular, and the front end opening of the compression passage (93) is a rounded rectangular. The compression passage (93) is used to throttle and expand the air entering from the rear end of the front fan cover (9) so as to reduce the fan outlet temperature. The rear end of the front fan cover (9) is provided with a mounting portion for mounting the front fan cover (9).

2. A front fan cover capable of reducing the air outlet temperature of a fan according to claim 1, characterized in that: A partition plate (94) is provided in the middle of the front end opening of the compression channel (93).

3. The front fan cover capable of reducing the air outlet temperature of a fan according to claim 1, characterized in that: The compression channels (93) are distributed in multiple circles and form a ring array.

4. A front fan cover capable of reducing the air outlet temperature of a fan according to claim 1, characterized in that: The mounting portion comprises a front mounting block (91) and a buckle (92); the front mounting blocks (91) are provided at the rear ends of the left and right sides and the bottom of the front fan cover (9); and the buckle (92) is provided at the rear end of the top of the front fan cover (9).

5. A front fan cover capable of reducing the air outlet temperature of a fan according to claim 4, characterized in that: A notch is provided in the middle of the rear end of the buckle (92).

6. A fan, using a front fan cover capable of reducing the fan outlet temperature as claimed in any one of claims 1 to 5, characterized in that: The invention comprises a base (1), wherein a vertical support sleeve (2) is fixedly connected to the top center of the base (1), a driving member (6) is arranged above the support sleeve (2), a rear fan cover (7) is fixedly connected to the front end of the driving member (6), the rear fan cover (7) is fixedly connected to the front fan cover (9), a fan blade (8) is fixedly connected to the output shaft of the driving member (6), and the fan blade (8) is located between the rear fan cover (7) and the front fan cover (9).

7. A fan according to claim 6, characterized in that: An adjusting knob (3) is sleeved on the outer periphery of the top of the supporting sleeve (2); a main control panel (4) is arranged above the supporting sleeve (2); a supporting rod is arranged at the lower end of the main control panel (4); the supporting rod extends into the interior of the supporting sleeve (2); the adjusting knob (3) is used to fix the main control panel (4); an adjusting block (5) is hinged at the top of the main control panel (4); and a driving member (6) is rotatably connected to the top of the adjusting block (5).

8. A fan according to claim 6, characterized in that: The rear fan cover (7) is provided with a rear mounting block (71), and the rear mounting block (71) is fixedly connected to the mounting portion.

9. The fan according to claim 7, characterized in that: A damping is provided at the connection between the adjustment block (5) and the main control panel (4), and the direction of the driving member (6) is adjusted by the rotation of the adjustment block (5).

10. The fan according to claim 8, characterized in that: The rear mounting block (71) is arranged on the left and right sides and the bottom of the rear fan cover (7).

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