CN223769002U - Fresh air preheating device - Google Patents
Fresh air preheating deviceInfo
- Publication number
- CN223769002U CN223769002U CN202423288497.XU CN202423288497U CN223769002U CN 223769002 U CN223769002 U CN 223769002U CN 202423288497 U CN202423288497 U CN 202423288497U CN 223769002 U CN223769002 U CN 223769002U
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- preheating device
- electric heaters
- fresh air
- air
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- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
Abstract
The utility model relates to the field of air conditioning unit equipment, in particular to a fresh air preheating device, which comprises a case, wherein an air inlet is formed in the top of one end of the case, an air outlet is formed in the other end of the case, a heating coil and a fan assembly are arranged in the case, the fan assembly is arranged between the heating coil and the air outlet, a plurality of first electric heaters and a plurality of second electric heaters are arranged in the air inlet, the temperature of air sucked into the air inlet is quickly heated to a temperature suitable for the operation of the heating coil in a short time through the first electric heaters and the second electric heaters, the preheating effect is realized, the frosting of the surface of the heating coil is prevented, the heat exchange efficiency is improved, the service life is prolonged, the second electric heaters are arranged below the first electric heaters, the second electric heaters and the first electric heaters are staggered, the heat is ensured to be more uniformly distributed in the air inlet, the heat exchange contact area with the air is increased, and the air heating is more uniform.
Description
Technical Field
The utility model relates to the field of air conditioning unit equipment, in particular to a fresh air preheating device.
Background
The air conditioning unit realizes the functions of refrigeration, heating, dehumidification, humidification, purification, dust removal, sterilization and the like through various heat and humidity treatment schemes and air purification treatment, thereby achieving the accurate control of indoor environment temperature, humidity and cleanliness. At present, after fresh air is sucked into the air conditioning unit, the fresh air can be heated through the heating coil, but if the temperature of the fresh air is lower, frosting can be caused on the surface of the heating coil, the heat exchange efficiency is reduced, and the heat load of the heating coil is overlarge and the service life of the air conditioning unit is shortened because the temperature of the fresh air is too low.
Disclosure of utility model
In order to overcome the defects of the prior art, the utility model aims to provide a fresh air preheating device which can prevent frosting on the surface of a heating coil, improve heat exchange efficiency and prolong service life.
The technical scheme adopted by the utility model is as follows:
The utility model provides a fresh air preheating device, includes the quick-witted case, and the one end top of machine case is equipped with the air intake, and the other end is equipped with the air outlet, and its inside heating coil and fan subassembly that is equipped with, and the fan subassembly sets up between heating coil and air outlet, is equipped with a plurality of first electric heater and a plurality of second electric heater in the air intake, and the second electric heater sets up in first electric heater's below, and it is the setting of staggering with first electric heater.
Preferably, the first electric heater and the second electric heater have the same structure and are PCT electric heaters.
Preferably, the PCT electric heater comprises a PTC heating core and a mounting and fixing bracket, wherein the mounting and fixing bracket is provided with two ends which are symmetrically connected with the PTC heating core, a plurality of radiating fins are uniformly distributed in the middle of the PTC heating core, the inner side of the air inlet is symmetrically provided with a supporting plate, and the mounting and fixing bracket is fixedly connected to the upper side of the supporting plate through screws.
Preferably, the PTC heating core is made of barium titanate ceramic.
Preferably, the heat sink is made of aluminum alloy.
Preferably, the fan assembly comprises a centrifugal fan and a motor, and the motor is in transmission connection with the centrifugal fan through a belt.
Preferably, a bag filter is arranged in the case, and the bag filter is arranged on one side of the heating coil, which is close to the air inlet.
Preferably, the case is provided with a first access door, and the first access door is arranged at one side of the bag filter.
Preferably, the bag filter comprises a non-woven fabric filter bag and a shaping frame, wherein the non-woven fabric filter bag is connected to one side, close to the heating coil, of the shaping frame, an upper sliding rail and a lower sliding rail are fixedly connected in the case, the top of the shaping frame is in sliding connection with the upper sliding rail, and the bottom of the shaping frame is in sliding connection with the lower sliding rail.
Preferably, a second access door is arranged on the case, and the second access door is arranged on one side of the fan assembly.
The utility model has the beneficial effects that:
This new trend preheating device heats the temperature to the temperature that is fit for heating coil work through first electric heater and second electric heater to the air temperature of inhaling the air intake fast in the short time, realizes preheating effect, prevents heating coil surface frosting, improves heat exchange efficiency and increase of service life, through setting up the second electric heater in the below of first electric heater, makes second electric heater and first electric heater be the setting of staggering moreover, ensures that heat distributes in the air intake more evenly, increases the heat exchange area of contact with the air, makes air heating more even.
Drawings
Fig. 1 is a schematic perspective view of the present utility model.
Fig. 2 is a schematic diagram of the internal structure of the present utility model.
Fig. 3 is a schematic view of a bag filter in a disassembled state.
Fig. 4 is a schematic structural diagram of a first electric heater and a second electric heater.
Fig. 5 is a schematic connection diagram of the support plates.
Fig. 6 is a schematic installation diagram of the first electric heater and the second electric heater.
In the figure, a case 1, an air inlet 2, an air outlet 3, a heating coil 4, a fan assembly 5, a centrifugal fan 501, a motor 502, a belt 503, a first electric heater, a PTC heating core 601, a mounting and fixing bracket 602, a radiator 603, a screw 604, a second electric heater 8, a bag filter 801, a non-woven fabric filter bag 802, a shaping frame 9, a first access door 10, an upper sliding rail 11, a lower sliding rail 12, a second access door 12 and a supporting plate 13.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-6, the present utility model provides a technical scheme, including a case 1, wherein an air inlet 2 is provided at one end top of the case 1, an air outlet 3 is provided at the other end of the case, a heating coil 4 and a fan assembly 5 are provided inside the case, the fan assembly 5 is disposed between the heating coil 4 and the air outlet 3, a plurality of first electric heaters 6 and a plurality of second electric heaters 7 are provided in the air inlet 2, the second electric heaters 7 are disposed below the first electric heaters 6 and are staggered with the first electric heaters 6;
Through first electric heater 6 and second electric heater 7 in the short time fast to the air temperature of inhaling air intake 2 heat to a temperature that is fit for heating coil 4 work, realize preheating effect, prevent heating coil 4 surface frosting, improve heating coil 4 heat exchange efficiency and prolong heating coil 4's life, through setting up second electric heater 7 in the below of first electric heater 6, make second electric heater 7 and first electric heater 6 be the setting of staggering moreover, ensure that heat distributes more evenly in air intake 2, increase and the heat exchange area of contact of air, make the air heating more even.
In order to prevent overheating, improve safety, increase heating speed and improve energy-saving effect, in this embodiment, it is preferable that the first electric heater 6 and the second electric heater 7 have the same structure and are PCT electric heaters;
The purpose is that can self-regulating temperature and heating rate are fast through PCT electric heater, in the use, when the temperature risees, resistance increases, lead to the electric current to reduce to automatically reduced heating power, make it reduce power when heating temperature is too high voluntarily, prevent overheated, reduced the security problem that human error or electrical apparatus trouble arouse, improve the security, moreover can reduce power voluntarily after reaching certain temperature, avoid unnecessary energy waste, improve energy-conserving effect, PCT electric heater maintains the stability of temperature through automatically regulated power for it can maintain invariable temperature for a long time, the condition that temperature fluctuation is too big can not appear, reach stable heating's effect.
In order to further increase the heat exchange contact area with air, so that the air is heated more uniformly, and the heat exchange efficiency is improved, in the embodiment, preferably, the PCT electric heater comprises a PTC heating core 601 and a mounting fixing bracket 602, the mounting fixing bracket 602 is provided with two and symmetrically connected with two ends of the PTC heating core 601, a plurality of cooling fins 603 are uniformly distributed in the middle of the PTC heating core 601, a supporting plate 13 is symmetrically arranged on the inner side of the air inlet 2, and the mounting fixing bracket 602 is fixedly connected with the upper side of the supporting plate 13 through screws 604;
The purpose is with PTC heating core 601 switch on, make the electric current pass through PTC heating core 601, because the resistance is less, the electric current is great, PTC heating core 601 begins to generate heat, along with the temperature rise, PTC heating core 601's resistance increases gradually, when the temperature reaches a definite value, the resistance of PTC heating core 601 increases to sufficient degree, the electric current flow reduces by a wide margin, at this moment, the heat that produces is roughly balanced with the heat that loses, the temperature is kept in a safe scope, prevent overheated, increase thermal dissipation area through setting up a plurality of fin 603, and then improve the heat exchange efficiency with the air, and make the air heating more even.
In order to conveniently improve thermal stability, chemical stability and electrical insulation, in this embodiment, preferably, the PTC heating core 601 is made of barium titanate ceramic, so that the PTC heating core 601 made of barium titanate ceramic has a higher positive temperature coefficient in a certain temperature range, and the resistance of the material increases rapidly along with the temperature rise, thereby effectively controlling the heating process.
In order to improve the heat conductivity and improve the heating efficiency, in this embodiment, the heat sink 603 is preferably made of an aluminum alloy, so that the aluminum alloy has a higher heat conductivity, so that heat can be quickly transferred to the heating surface, and the heating efficiency is improved.
To facilitate the air flow, in this embodiment, the fan assembly 5 preferably includes a centrifugal fan 501 and a motor 502, and the motor 502 is in driving connection with the centrifugal fan 501 through a belt 503;
The purpose is to make the motor 502 drive the centrifugal fan 501 to rotate through the belt 503, so as to push the air flow to enter the chassis 1 from the air inlet 2 and to be discharged from the air outlet 3.
In order to facilitate filtering of dust in air, in this embodiment, preferably, a bag filter 8 is disposed inside the cabinet 1, and the bag filter 8 is disposed on a side of the heating coil 4 near the air inlet 2, so as to filter the dust in air through the bag filter 8.
In order to facilitate maintenance or replacement of the bag filter 8, in this embodiment, preferably, the cabinet 1 is provided with a first access door 9, and the first access door 9 is disposed on one side of the bag filter 8, so that maintenance or replacement of the bag filter 8 is facilitated by opening the first access door 9.
In order to facilitate further replacement of the bag filter 8, in this embodiment, preferably, the bag filter 8 includes a non-woven fabric filter bag 801 and a shaping frame 802, the non-woven fabric filter bag 801 is connected to one side of the shaping frame 802 close to the heating coil 4, an upper slide rail 10 and a lower slide rail 11 are fixedly connected in the case 1, the top of the shaping frame 802 is slidably connected with the upper slide rail 10, and the bottom of the shaping frame is slidably connected with the lower slide rail 11;
The purpose is through carrying out the push-and-pull to shaping frame 802, makes shaping frame 802 slide along last slide rail 10 and lower slide rail 11, and then can shift out shaping frame 802 and non-woven fabrics filter bag 801 outside quick-witted case 1, realizes the effect of dismantling, conveniently changes bag filter 8.
In order to facilitate maintenance or replacement of the fan assembly 5, in this embodiment, preferably, the chassis 1 is provided with a second access door 12, and the second access door 12 is disposed on one side of the fan assembly 5, so that maintenance or replacement of the fan assembly 5 is facilitated by opening the second access door 12.
It should be noted that the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited to the foregoing embodiments, but may be modified or substituted for some of the features described in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The fresh air preheating device comprises a case (1) and is characterized in that an air inlet (2) is formed in the top of one end of the case (1), an air outlet (3) is formed in the other end of the case, a heating coil (4) and a fan assembly (5) are arranged in the case, the fan assembly (5) is arranged between the heating coil (4) and the air outlet (3), a plurality of first electric heaters (6) and a plurality of second electric heaters (7) are arranged in the air inlet (2), and the second electric heaters (7) are arranged below the first electric heaters (6) and are staggered with the first electric heaters (6).
2. The fresh air preheating device according to claim 1, wherein the first electric heater (6) and the second electric heater (7) have the same structure and are all PCT electric heaters.
3. The fresh air preheating device according to claim 2, wherein the PCT electric heater comprises a PTC heating core (601) and a mounting fixing support (602), the mounting fixing support (602) is provided with two ends which are symmetrically connected with the PTC heating core (601), a plurality of cooling fins (603) are uniformly distributed in the middle of the PTC heating core (601), a supporting plate (13) is symmetrically arranged on the inner side of the air inlet (2), and the mounting fixing support (602) is fixedly connected to the upper side of the supporting plate (13) through screws (604).
4. The fresh air preheating device according to claim 3, wherein the PTC heating core (601) is made of barium titanate ceramics.
5. A fresh air preheating device according to claim 3, wherein the heat sink (603) is made of aluminum alloy.
6. The fresh air preheating device according to claim 1, wherein the fan assembly (5) comprises a centrifugal fan (501) and a motor (502), and the motor (502) is in transmission connection with the centrifugal fan (501) through a belt (503).
7. The fresh air preheating device according to claim 1, wherein a bag filter (8) is arranged in the case (1), and the bag filter (8) is arranged on one side of the heating coil (4) close to the air inlet (2).
8. The fresh air preheating device according to claim 7, wherein the case (1) is provided with a first access door (9), and the first access door (9) is arranged at one side of the bag filter (8).
9. The fresh air preheating device according to claim 8, wherein the bag filter (8) comprises a non-woven fabric filter bag (801) and a shaping frame (802), the non-woven fabric filter bag (801) is connected to one side of the shaping frame (802) close to the heating coil (4), an upper sliding rail (10) and a lower sliding rail (11) are fixedly connected in the case (1), the top of the shaping frame (802) is in sliding connection with the upper sliding rail (10), and the bottom of the shaping frame is in sliding connection with the lower sliding rail (11).
10. The fresh air preheating device according to claim 1, wherein the case (1) is provided with a second access door (12), and the second access door (12) is arranged on one side of the fan assembly (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202423288497.XU CN223769002U (en) | 2024-12-30 | 2024-12-30 | Fresh air preheating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202423288497.XU CN223769002U (en) | 2024-12-30 | 2024-12-30 | Fresh air preheating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223769002U true CN223769002U (en) | 2026-01-06 |
Family
ID=98249973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202423288497.XU Active CN223769002U (en) | 2024-12-30 | 2024-12-30 | Fresh air preheating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223769002U (en) |
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2024
- 2024-12-30 CN CN202423288497.XU patent/CN223769002U/en active Active
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