Ptc electric heating device and air conditioner

Abstract

The utility model belongs to air conditioning technical field discloses a kind of PTC electric heating device and air conditioner, the PTC electric heating device includes fixed support module, movable support module and PTC electric heater, fixed support module includes two guide rail plate groups and the limiting plate being made of first limiting part and second limiting part, first limiting part and second limiting part form first included angle R1 between, movable support module includes the abutting plate being made of first abutting part and second abutting part, first abutting part and second abutting part form second included angle R2 between, and satisfy R1≤R2, movable support module of bearing PTC electric heater is slidably arranged on guide rail plate group.Only need to be extracted movable support module, maintenance and overhaul can be carried out, and using first limiting part is pressed in the upper side of first abutting part, the fixing and limiting of movable support module are realized, so as to simplify the operation when maintenance and overhaul, make maintenance and overhaul operation more convenient.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a PTC electric heating device and an air conditioner. Background Technology

[0002] In air conditioners, PTC electric heaters primarily function as auxiliary heating elements. Their role is to assist the compressor in increasing heating capacity in low-temperature environments, compensating for the reduced heating efficiency caused by excessively low outdoor temperatures. Functionally, utilizing the characteristics of a positive temperature coefficient thermistor, it automatically heats up after being energized. As the temperature rises, its resistance increases and its power decreases, providing automatic temperature limiting to ensure safe and stable heating. It can also be linked with the air conditioning control system to adjust the heating output according to indoor temperature requirements, improving heating comfort. In air conditioning systems, PTC electric heaters are crucial auxiliary components, especially in cold northern regions or low-temperature winter environments. They significantly improve the heating effect of air conditioners, expand the applicable temperature range, and enhance the user experience, making them an indispensable part of achieving efficient and stable heating.

[0003] Therefore, routine maintenance and repair of PTC electric heaters are necessary measures to ensure their normal operation. However, currently, maintenance and repair require operators to enter the air conditioner to perform the work. However, the interior space of the air conditioner is very small, and the operating space is limited. Therefore, it is very inconvenient for operators to maintain and repair PTC electric heaters, resulting in high difficulty and long time consumption in maintenance and repair.

[0004] Therefore, there is an urgent need for a PTC electric heating device and an air conditioner to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a PTC electric heating device and air conditioner that are easy to maintain and repair, reduce the difficulty of maintenance and repair operations, shorten maintenance and repair time, and improve work efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On one hand, a PTC electric heating device is provided, the PTC electric heating device comprising:

[0008] A fixed support module includes two guide rail plate groups and a limiting plate. Each guide rail plate group includes a first end and a second end located on both sides in a first direction. The limiting plate is located at the first end and connected between the two guide rail plate groups. The limiting plate includes a first limiting part and a second limiting part. The second limiting part is connected to the guide rail plate group. The first limiting part is located on the side of the second limiting part away from the guide rail plate group. The first limiting part is inclined in the direction close to the second end and forms a first included angle R1 with the second limiting part.

[0009] A movable support module includes a backing plate, which includes a first abutting part and a second abutting part. The first abutting part is located on the side of the second abutting part away from the guide rail plate assembly. The first abutting part is inclined in a direction away from the limiting plate and forms a second included angle R2 with the second abutting part, satisfying R1≤R2. The movable support module is slidably disposed on the guide rail plate assembly to drive the backing plate to abut against or separate from the limiting plate.

[0010] The PTC electric heater is connected to the movable support module.

[0011] Optionally, the first included angle R1 and the second included angle R2 satisfy R1 = R2 = 135°.

[0012] Optionally, the movable support module further includes a push-pull plate and two side plates. The push-pull plate is located on the side of the movable support module away from the abutment plate. The two side plates are connected between the push-pull plate and the abutment plate at intervals. One end of the PTC electric heater is connected to the abutment plate, and the other end of the PTC electric heater is connected to the push-pull plate.

[0013] Optionally, the abutment plate further includes a first support portion, which is vertically connected to the side of the second abutment portion away from the first abutment portion. The first support portion extends in a direction away from the limiting plate. The push-pull plate includes a second support portion. One end of the PTC electric heater is connected to the first support portion, and the other end of the PTC electric heater is connected to the second support portion.

[0014] Optionally, the abutment plate further includes a first enclosure portion, which is disposed on both sides of the abutment plate along the second direction and located on the side of the side plate facing the guide rail plate assembly. The first bearing portion, the first abutting portion, and the second abutting portion are all perpendicularly connected to the first enclosure portion.

[0015] Optionally, the push-pull plate further includes a push-pull connecting part and a second enclosure part. The second enclosure part is disposed on both sides of the push-pull connecting part along the second direction and is located on the side of the side plate facing the guide rail plate assembly. The second bearing part and the push-pull connecting part are both perpendicularly connected to the second enclosure part.

[0016] Optionally, the push-pull plate further includes a push-pull portion, which is connected to the side of the push-pull connection portion away from the second bearing portion and extends in a direction away from the abutment plate. The push-pull portion is provided with a gripping through hole.

[0017] Optionally, the guide rail plate assembly includes a guide rail base plate and a guide rail side plate. The guide rail side plate includes a first guide portion and a second guide portion. The second guide portion is connected to the guide rail base plate. The first guide portion is located on the side of the second guide portion away from the guide rail base plate and extends in a direction close to the movable support module. The first guide portion, the second guide portion, and the guide rail base plate together form a sliding groove for the movable support module to slide. The width of the sliding groove in the third direction is the same as the height of the abutment plate in the third direction.

[0018] Optionally, the guide rail side plate further includes a guide rail connecting part, which is located on the side of the second guide part near the guide rail base plate and extends in a direction away from the movable bracket module. The guide rail connecting part is connected to the guide rail base plate.

[0019] On the other hand, an air conditioner is provided, which includes a PTC electric heating device as described in any of the preceding claims.

[0020] The beneficial effects of this utility model are:

[0021] This utility model provides a PTC electric heating device. By setting a fixed support module with a guide rail plate assembly, and using a movable support module for supporting the PTC electric heater slidably mounted on the guide rail plate assembly of the fixed support module, maintenance and repair of the PTC electric heater can be performed simply by removing the movable support module. The fixed support module is equipped with a limiting plate composed of a first limiting part and a second limiting part, and the movable support module is equipped with a backing plate composed of a first abutting part and a second abutting part. The first limiting part is inclined along the direction close to the second end of the guide rail plate assembly, forming a first included angle R1. The first abutting part is inclined along the direction away from the limiting plate, forming a second included angle R2, and R1≤R2, so that when the movable bracket module is pushed to make the abutting plate abut against the limiting plate, the first limiting part is pressed against the top of the first abutting part, thereby realizing the fixation and limiting of the movable bracket module. There is no need to use bolts or other additional connecting parts to connect the movable bracket module and the fixed bracket module, which further simplifies the operation during maintenance and repair, making maintenance and repair work more convenient.

[0022] This utility model provides an air conditioner that, by applying the aforementioned PTC electric heating device, makes maintenance and repair work more convenient, not only improving the efficiency of maintenance and repair work, but also significantly reducing the workload of operators. Attached Figure Description

[0023] Figure 1 This is a structural assembly drawing of the PTC electric heating device provided by this utility model;

[0024] Figure 2 This is a structural schematic diagram of the fixed support module in the PTC electric heating device provided by this utility model;

[0025] Figure 3 This is a schematic diagram of the movable support module in the PTC electric heating device provided by this utility model;

[0026] Figure 4 This is a schematic diagram of the guide rail plate assembly in the PTC electric heating device provided by this utility model;

[0027] Figure 5 This is a schematic diagram of the limiting plate in the PTC electric heating device provided by this utility model;

[0028] Figure 6 This is a side sectional view of the limiting plate in the PTC electric heating device provided by this utility model;

[0029] Figure 7 This is a schematic diagram of the abutment plate in the PTC electric heating device provided by this utility model;

[0030] Figure 8 This is a side sectional view of the abutment plate in the PTC electric heating device provided by this utility model;

[0031] Figure 9 This is a schematic diagram of the push-pull plate in the PTC electric heating device provided by this utility model.

[0032] In the picture:

[0033] 1. Fixed bracket module; 11. Guide rail plate assembly; 111. Guide rail base plate; 112. Guide rail side plate; 1121. First guide part; 1122. Second guide part; 1123. Guide rail connecting part; 113. Sliding groove; 12. Limiting plate; 121. First limiting part; 122. Second limiting part; 123. Limiting connecting part;

[0034] 2. Movable support module; 21. Backing plate; 211. First abutting part; 212. Second abutting part; 213. First bearing part; 214. First enclosure part; 22. Push-pull plate; 221. Second bearing part; 222. Push-pull connection part; 223. Second enclosure part; 224. Push-pull part; 225. Grip through hole; 23. Side plate;

[0035] 3. PTC electric heater. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] In air conditioners, PTC electric heaters primarily function as auxiliary heating elements. Their role is to assist the compressor in increasing heating capacity in low-temperature environments, compensating for the reduced heating efficiency caused by excessively low outdoor temperatures. Functionally, utilizing the characteristics of a positive temperature coefficient thermistor, it automatically heats up after being energized. As the temperature rises, its resistance increases and its power decreases, providing automatic temperature limiting to ensure safe and stable heating. It can also be linked with the air conditioning control system to adjust the heating output according to indoor temperature requirements, improving heating comfort. In air conditioning systems, PTC electric heaters are crucial auxiliary components, especially in cold northern regions or low-temperature winter environments. They significantly improve the heating effect of air conditioners, expand the applicable temperature range, and enhance the user experience, making them an indispensable part of achieving efficient and stable heating.

[0041] Therefore, routine maintenance and repair of PTC electric heaters are necessary measures to ensure their normal operation. However, currently, maintenance and repair require operators to enter the air conditioner to perform the work. However, the interior space of the air conditioner is very small, and the operating space is limited. Therefore, it is very inconvenient for operators to maintain and repair PTC electric heaters, resulting in high difficulty and long time consumption in maintenance and repair.

[0042] Therefore, in order to reduce the difficulty of maintenance and repair, shorten the maintenance and repair time, and improve work efficiency, this embodiment provides a PTC electric heating device.

[0043] like Figures 1 to 9As shown, the PTC electric heating device includes a fixed support module 1, a movable support module 2, and a PTC electric heater 3. The fixed support module 1 includes two guide rail plate assemblies 11 and a limiting plate 12. The guide rail plate assembly 11 includes a first end and a second end located on both sides in a first direction. The limiting plate 12 is located at the first end and connected between the two guide rail plate assemblies 11. The limiting plate 12 includes a first limiting part 121 and a second limiting part 122. The second limiting part 122 is connected to the guide rail plate assembly 11. The first limiting part 121 is located on the side of the second limiting part 122 away from the guide rail plate assembly 11. The first limiting part 121 is inclined in the direction closer to the second end. The movable support module 2 is inclined and forms a first included angle R1 with the second limiting part 122. The movable support module 2 includes a backing plate 21, which includes a first abutting part 211 and a second abutting part 212. The first abutting part 211 is located on the side of the second abutting part 212 away from the guide rail plate group 11. The first abutting part 211 is inclined in a direction away from the limiting plate 12 and forms a second included angle R2 with the second abutting part 212, and satisfies R1≤R2. The movable support module 2 is slidably disposed on the guide rail plate group 11 to drive the backing plate 21 to abut or separate from the limiting plate 12. The PTC electric heater 3 is connected to the movable support module 2.

[0044] By setting a fixed support module 1 with a guide rail plate assembly 11, and a movable support module 2 for supporting the PTC electric heater 3 is slidably mounted on the guide rail plate assembly 11 of the fixed support module 1, the PTC electric heater 3 can be maintained and repaired simply by pulling out the movable support module 2. The fixed support module 1 is provided with a limiting plate 12 composed of a first limiting part 121 and a second limiting part 122, and the movable support module 2 is provided with an abutment plate 21 composed of a first abutment part 211 and a second abutment part 212. Because the first limiting part 121... The first abutment portion 211 is inclined in the direction close to the second end of the guide rail plate assembly 11, forming a first included angle R1. The first abutment portion 211 is inclined in the direction away from the limiting plate 12, forming a second included angle R2, and R1≤R2, so that when the movable bracket module 2 is pushed to make the abutment plate 21 abut against the limiting plate 12, the first limiting portion 121 is pressed against the top of the first abutment portion 211, thereby achieving the fixation and limiting of the movable bracket module 2. There is no need to use bolts or other additional connecting parts to connect the movable bracket module 2 and the fixed bracket module 1, thereby further simplifying the operation during maintenance and repair, and making maintenance and repair work more convenient.

[0045] In this embodiment, the structural strength of the limiting plate 12 is greater than that of the abutment plate 21, so that when the first included angle R1 is less than the second included angle R2, the first limiting part 121 on the limiting plate 12 can squeeze the first abutment part 211 of the abutment plate 21, causing it to deform, thereby making the first limiting part 121 and the first abutment part 211 tightly abut against each other, realizing the fixing and limiting of the limiting plate 12 on the abutment plate 21. In order to ensure the connection strength between the limiting plate 12 and the guide rail plate assembly 11, the limiting plate 12 also includes a limiting connecting part 123. The limiting connecting part 123 is connected to the side of the second limiting part 122 away from the first limiting part 121 and extends in the direction away from the movable bracket module 2, thereby increasing the contact area between the limiting plate 12 and the guide rail plate assembly 11 by using the limiting connecting part 123, thereby enhancing the connection strength between the limiting plate 12 and the guide rail plate assembly 11.

[0046] Specifically, such as Figure 6 , Figure 8 As shown, the first included angle R1 and the second included angle R2 satisfy R1 = R2 = 135°. By making the first included angle R1 and the second included angle R2 equal to each other, when the abutment plate 21 contacts the limiting plate 12, the first limiting part 121 presses against the first abutment part 211. This achieves both fixing and limiting of the abutment plate 21, while avoiding excessive fixing force that would cause excessive resistance when the operator pulls out the movable bracket module 2. Furthermore, by making the first included angle R1 and the second included angle R2 both 135°, this angle ensures that the first limiting part 121 limits the first abutment part 211, while also avoiding excessive resistance when the abutment plate 21 approaches the limiting plate 12. In addition, the contact between the first limiting part 121 and the first abutment part 211 also guides the sliding of the movable bracket module 2.

[0047] Optionally, such as Figure 3 As shown, the movable support module 2 also includes a push-pull plate 22 and two side plates 23. The push-pull plate 22 is located on the side of the movable support module 2 away from the abutment plate 21. The two side plates 23 are spaced apart between the push-pull plate 22 and the abutment plate 21. One end of the PTC electric heater 3 is connected to the abutment plate 21, and the other end of the PTC electric heater 3 is connected to the push-pull plate 22. The push-pull plate 22, the two side plates 23, and the abutment plate 21 together form a movable support module 2 with a frame structure, ensuring that the PTC electric heater 3 connected to the movable support module 2 is not blocked by the air exposed to the structure, thus guaranteeing that the heating efficiency of the PTC electric heater 3 is not compromised.

[0048] In this embodiment, the side plate 23, the push-pull plate 22 and the abutment plate 21 are fixedly connected by bolts, which facilitates the assembly and disassembly of the movable support module 2. In order to reduce the weight of the movable support module 2, the side plate 23 adopts a channel-shaped sheet metal, so that the movable support module 2 meets the principle of lightweight structural design.

[0049] Optionally, such as Figure 7 , Figure 8 As shown, the abutment plate 21 also includes a first support portion 213, which is vertically connected to the side of the second abutment portion 212 opposite to the first abutment portion 211. The first support portion 213 extends in a direction away from the limiting plate 12. The push-pull plate 22 includes a second support portion 221. One end of the PTC electric heater 3 is connected to the first support portion 213, and the other end of the PTC electric heater 3 is connected to the second support portion 221. By providing the first support portion 213 on the abutment plate 21 and the second support portion 221 on the push-pull plate 22, sufficient connection area is provided between the abutment plate 21 and the push-pull plate 22 and the PTC electric heater 3, thereby facilitating the connection of both ends of the PTC electric heater 3 with the abutment plate 21 and the push-pull plate 22.

[0050] In this embodiment, in order to facilitate the connection of the PTC electric heater 3, the PTC electric heater 3 is provided with a waist-shaped connection through hole, thereby reducing the impact of deviation in connection position caused by processing errors.

[0051] Optionally, such as Figure 7 As shown, the abutment plate 21 also includes a first enclosure portion 214, which is provided on both sides of the abutment plate 21 along the second direction and located on the side of the side plate 23 facing the guide rail plate assembly 11. The first bearing portion 213, the first abutting portion 211, and the second abutting portion 212 are all perpendicularly connected to the first enclosure portion 214. By providing the first enclosure portion 214, the end of the PTC electric heater 3 connected to the abutment plate 21 is protected.

[0052] In this embodiment, the abutment plate 21 is prepared by a bending process, which involves cutting and bending sheet metal to form a first bearing part 213, a first abutment part 211, a second abutment part 212, and a first enclosure part 214.

[0053] Optionally, such as Figure 9 As shown, the push-pull plate 22 also includes a push-pull connecting portion 222 and a second blocking portion 223. The second blocking portion 223 is provided on both sides of the push-pull connecting portion 222 along the second direction and is located on the side of the side plate 23 facing the guide rail plate assembly 11. The second bearing portion 221 and the push-pull connecting portion 222 are both perpendicularly connected to the second blocking portion 223. By providing the second blocking portion 223, the end of the PTC electric heater 3 connected to the push-pull plate 22 is protected.

[0054] Furthermore, since the side plate 23 is located between the first enclosure part 214 and the second enclosure part 223, when the movable support module 2 is slidable, only the bottom plane of the side plate 23 contacts the guide rail plate assembly 11, while the side side of the side plate 23 does not contact the guide rail plate assembly 11. This reduces the contact area between the movable support module 2 and the guide rail plate assembly 11 during sliding, reduces frictional resistance, and makes the movable support module 2 less resistant during sliding, making it easier for operators to push and pull.

[0055] Optionally, such as Figure 9 As shown, the push-pull plate 22 also includes a push-pull portion 224, which is connected to the side of the push-pull connecting portion 222 away from the second bearing portion 221 and extends in a direction away from the abutment plate 21. A gripping through hole 225 is provided on the push-pull portion 224. By providing the push-pull portion 224 on the push-pull plate 22 and extending it in a direction away from the abutment plate 21, the distance between the push-pull plate 22 and the outlet is shortened, making it easier for operators to access the push-pull plate 22. Furthermore, the gripping through hole 225 on the push-pull portion 224 facilitates the operator's gripping of the push-pull plate 22, enabling the push-pull of the movable support module 2.

[0056] In this embodiment, the push-pull plate 22 is prepared by a bending process, which involves cutting and bending sheet metal to form a push-pull connection 222, a second enclosure 223, a second load-bearing part 221, and a push-pull part 224.

[0057] Optionally, such as Figure 3 , Figure 4 As shown, the guide rail plate assembly 11 includes a guide rail base plate 111 and a guide rail side plate 112. The guide rail side plate 112 includes a first guide portion 1121 and a second guide portion 1122. The second guide portion 1122 is connected to the guide rail base plate 111. The first guide portion 1121 is located on the side of the second guide portion 1122 away from the guide rail base plate 111 and extends along the direction close to the movable bracket module 2. The first guide portion 1121, the second guide portion 1122 and the guide rail base plate 111 together form a sliding groove 113 for sliding the movable bracket module 2. The width of the sliding groove 113 along the third direction is the same as the height of the abutment plate 21 along the third direction. By setting the guide rail base plate 111, it is convenient to support the movable support module 2. By setting the guide rail side plate 112 composed of the first guide part 1121 and the second guide part 1122, the top and sides of the guide rail base plate 111 are shielded to prevent dust and other impurities from falling on the guide rail base plate 111, thereby increasing the frictional resistance when the movable support module 2 slides on the guide rail base plate 111. Furthermore, since the width of the sliding groove 113 along the third direction is the same as the height of the abutment plate 21 along the third direction, it can also limit and guide the sliding of the movable support module 2, preventing the movable support module 2 from shifting along the third direction.

[0058] Optionally, such as Figure 4 As shown, the guide rail side plate 112 also includes a guide rail connecting portion 1123. The guide rail connecting portion 1123 is located on the side of the second guide portion 1122 near the guide rail base plate 111 and extends in a direction away from the movable bracket module 2. The guide rail connecting portion 1123 is connected to the guide rail base plate 111. By providing the guide rail connecting portion 1123 on the guide rail side plate 112, the contact area between the guide rail side plate 112 and the guide rail base plate 111 is increased, thereby facilitating the connection between the guide rail side plate 112 and the guide rail base plate 111. In this embodiment, the guide rail base plate 111 and the guide rail connecting portion 1123 are connected by bolts.

[0059] In this embodiment, an air conditioner is also provided, which includes the aforementioned PTC electric heating device. By applying the PTC electric heating device, this air conditioner makes maintenance and repair work more convenient, not only improving the efficiency of maintenance and repair work but also significantly reducing the workload of operators.

[0060] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A PTC electric heating device, characterized in that, The PTC electric heating device includes: A fixed bracket module (1) includes two guide rail plate groups (11) and a limiting plate (12). The guide rail plate group (11) includes a first end and a second end located on both sides of a first direction. The limiting plate (12) is located at the first end and connected between the two guide rail plate groups (11). The limiting plate (12) includes a first limiting part (121) and a second limiting part (122). The second limiting part (122) is connected to the guide rail plate group (11). The first limiting part (121) is located on the side of the second limiting part (122) away from the guide rail plate group (11). The first limiting part (121) is inclined in the direction close to the second end and forms a first included angle R1 with the second limiting part (122). The movable support module (2) includes a backing plate (21), which includes a first abutting part (211) and a second abutting part (212). The first abutting part (211) is located on the side of the second abutting part (212) away from the guide rail plate group (11). The first abutting part (211) is inclined in a direction away from the limiting plate (12) and forms a second included angle R2 with the second abutting part (212), and satisfies R1≤R2. The movable support module (2) is slidably disposed on the guide rail plate group (11) to drive the abutting plate (21) to abut or separate from the limiting plate (12). PTC electric heater (3), which is connected to the movable support module (2).

2. The PTC electric heating device according to claim 1, characterized in that, The first included angle R1 and the second included angle R2 satisfy R1 = R2 = 135°.

3. The PTC electric heating device according to claim 1, characterized in that, The movable support module (2) also includes a push-pull plate (22) and two side plates (23). The push-pull plate (22) is located on the side of the movable support module (2) away from the abutment plate (21). The two side plates (23) are connected between the push-pull plate (22) and the abutment plate (21) at intervals. One end of the PTC electric heater (3) is connected to the abutment plate (21), and the other end of the PTC electric heater (3) is connected to the push-pull plate (22).

4. The PTC electric heating device according to claim 3, characterized in that, The abutment plate (21) further includes a first support portion (213), which is vertically connected to the side of the second abutment portion (212) away from the first abutment portion (211). The first support portion (213) extends in a direction away from the limiting plate (12). The push-pull plate (22) includes a second support portion (221). One end of the PTC electric heater (3) is connected to the first support portion (213), and the other end of the PTC electric heater (3) is connected to the second support portion (221).

5. The PTC electric heating device according to claim 4, characterized in that, The abutment plate (21) further includes a first enclosure part (214), which is disposed on both sides of the abutment plate (21) along the second direction and located on the side of the side plate (23) facing the guide rail plate assembly (11). The first bearing part (213), the first abutting part (211) and the second abutting part (212) are all vertically connected to the first enclosure part (214).

6. The PTC electric heating device according to claim 4, characterized in that, The push-pull plate (22) further includes a push-pull connecting part (222) and a second enclosure part (223). The second enclosure part (223) is disposed on both sides of the push-pull connecting part (222) along the second direction and is located on the side of the side plate (23) facing the guide rail plate assembly (11). The second bearing part (221) and the push-pull connecting part (222) are both perpendicularly connected to the second enclosure part (223).

7. The PTC electric heating device according to claim 6, characterized in that, The push-pull plate (22) further includes a push-pull part (224), which is connected to the side of the push-pull connection part (222) away from the second bearing part (221) and extends in a direction away from the abutment plate (21). The push-pull part (224) is provided with a gripping through hole (225).

8. The PTC electric heating device according to claim 1, characterized in that, The guide rail plate assembly (11) includes a guide rail base plate (111) and a guide rail side plate (112). The guide rail side plate (112) includes a first guide portion (1121) and a second guide portion (1122). The second guide portion (1122) is connected to the guide rail base plate (111). The first guide portion (1121) is located on the side of the second guide portion (1122) away from the guide rail base plate (111) and extends along the direction close to the movable bracket module (2). The first guide portion (1121), the second guide portion (1122) and the guide rail base plate (111) together form a sliding groove (113) for sliding the movable bracket module (2). The width of the sliding groove (113) along the third direction is the same as the height of the abutment plate (21) along the third direction.

9. The PTC electric heating device according to claim 8, characterized in that, The guide rail side plate (112) also includes a guide rail connecting part (1123), which is located on the side of the second guide part (1122) near the guide rail base plate (111) and extends in a direction away from the movable bracket module (2). The guide rail connecting part (1123) is connected to the guide rail base plate (111).

10. An air conditioner, characterized in that, The air conditioner includes a PTC electric heating device as described in any one of claims 1-9.

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