A WPTC assembly separating double u cross flow channels

Abstract

This invention provides a WPTC assembly with a separated double U-shaped cross-shaped flow channel. In use, the controller starts and supplies high-voltage electricity to the WPTC. The WPTC receives instructions from the vehicle and begins to energize the PTC heating pack in the WPTC. The PTC heating pack releases heat, and the cold coolant enters from the water nozzle of the left front water chamber shell. The cold coolant is divided into three streams by the left front water chamber pressure plate and enters the lower left inner water chamber profile. Then, it flows from the lower left inner water chamber profile into the upper left inner water chamber profile, then from the upper left inner water chamber profile into the upper right inner water chamber profile, and finally from the upper right inner water chamber profile to the lower right inner water chamber profile. Finally, the heated coolant is discharged from the right front water chamber shell water nozzle through the right front water chamber pressure plate. During the process of the coolant passing through the above flow channels, a "double U-shaped cross" flow channel is formed, so that the cold coolant absorbs the heat of the PTC heating pack and carries it out to become heated coolant. Then, it passes through the heater core and the battery pack to provide heat to the passenger compartment and the battery pack.

Description

Technical Field

[0001] This utility model belongs to the technical field of water-heated PTC assembly, and particularly relates to a WPTC assembly with a separated double U-shaped cross-shaped flow channel. Background Technology

[0002] WPTC (Water-Driven PTC): This type of heater uses resistance to generate heat, but it heats the coolant. The heated coolant, in conjunction with an electric water pump, circulates in the vehicle's heater core, thus achieving a heating effect inside the vehicle. WPTC heaters are installed outside the air conditioning unit, offering advantages such as no risk of high-voltage leakage and high design flexibility. Furthermore, they require no modifications to the existing air conditioning unit, making them more popular and resulting in a higher vehicle installation rate.

[0003] Currently, most WPTC assemblies on the market use the Eberspächer plug-in flow channel structure. Although this structure can theoretically achieve water and electricity separation, the die-casting process is difficult, and many defective products have been found in the market due to poor die-casting and porosity. In addition, the plug-in flow channel structure, besides the thermally conductive insulating film, also has U-shaped clamps and wedge blocks. The wedge blocks are used for compression and fixation, which inevitably leads to heat loss due to the cooperation of multiple parts. Finally, because the plug-in structure makes the flow channel a trapezoidal structure, it inevitably leads to a difference in the flow velocity of the coolant at the top and bottom of the flow channel, resulting in uneven heat dissipation and temperature differences in the PTC heating pack. Therefore, this utility model proposes a WPTC assembly with a separated double U-shaped cross flow channel to solve the above problems. Utility Model Content

[0004] This invention provides a WPTC assembly with a separated double U-shaped cross-shaped flow channel, which aims to solve the problems mentioned in the background art.

[0005] This utility model is implemented as follows: a WPTC assembly with a separated double U-shaped cross-shaped flow channel includes a front water chamber assembly, a water chamber heater, and a rear housing;

[0006] The front end of the water chamber heater is provided with the front water chamber assembly, and the rear end of the water chamber heater is provided with the rear housing. The front water chamber assembly includes a front water chamber shell and a front water chamber pressure plate. The front water chamber shell is provided with two front water chamber shell water nozzles that are symmetrically distributed on the left and right sides. The front water chamber pressure plate is located behind the front water chamber shell water nozzles. The water chamber heater is provided with a PTC heating element inside.

[0007] The water chamber heater includes two sets of inner water chamber profiles and outer water chamber profiles symmetrically distributed on the left and right. The outer water chamber profiles wrap around the inner water chamber profiles. The two sets of inner water chamber profiles symmetrically distributed on the left and right are interconnected. The two sets of inner water chamber profiles symmetrically distributed on the left and right are each divided into upper and lower layers and the upper and lower layers are interconnected. The PTC heating element is located between the upper and lower layers of the inner water chamber profiles.

[0008] Preferably, a front water chamber sealing ring is provided at the connection between the front water chamber assembly and the water chamber heater.

[0009] Preferably, a rear water chamber sealing ring is provided at the connection between the water chamber heater and the rear housing.

[0010] Preferably, a control chamber is provided inside the rear housing.

[0011] Preferably, the control room is equipped with a controller for controlling the heating of the PTC heating pack.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. Compared with the common plug-in solution on the market, this product can achieve better heat conduction and improve the electrical performance of the product;

[0014] 2. Compared with the complex water chamber flow channel die casting commonly found in the market, this product has a higher difficulty in casting. The extrusion aluminum profile process and flow channel design are simpler and more cost-effective.

[0015] 3. The planar flow channel design of this product can make the coolant flow rate uniform and with virtually no temperature difference. Attached Figure Description

[0016] Figure 1 This is a top view of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the upper and lower flow channels of the left inner water chamber profile in this utility model;

[0018] Figure 3 This is a schematic diagram of the lower flow channel of the inner water chamber profile on both the left and right sides in this utility model;

[0019] Figure 4 This is a schematic diagram of the upper flow channel of the inner water chamber profile on the left and right sides in this utility model.

[0020] In the picture:

[0021] 1. Front water chamber assembly; 2. Water chamber heater; 3. Rear housing; 4. Front water chamber outer shell; 5. Front water chamber pressure plate; 6. Front water chamber sealing ring; 7. Inner water chamber profile; 8. Outer water chamber profile; 9. Rear water chamber sealing ring. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0023] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0024] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0027] Please see Figures 1 to 4 This utility model provides a technical solution: a WPTC assembly with a separated double U-shaped cross-shaped flow channel, including a front water chamber assembly 1, a water chamber heater 2, and a rear housing 3; the front water chamber assembly 1 is located at the front end of the water chamber heater 2, and the rear housing 3 is located at the rear end of the water chamber heater 2. The front water chamber assembly 1 includes a front water chamber shell 4 and a front water chamber pressure plate 5. The front water chamber shell 4 is provided with two front water chamber shell water nozzles that are symmetrically distributed on the left and right. The front water chamber pressure plate 5 is located behind the front water chamber shell water nozzles. A PTC heating pack is provided inside the water chamber heater 2. The water chamber heater 2 includes two sets of inner water chamber profiles 7 and outer water chamber profiles 8 that are symmetrically distributed on the left and right. The outer water chamber profiles 8 wrap the inner water chamber profiles 7. The two sets of inner water chamber profiles 7 that are symmetrically distributed on the left and right are interconnected. The two sets of inner water chamber profiles 7 that are symmetrically distributed on the left and right are each divided into upper and lower layers and the upper and lower layers are interconnected. The PTC heating pack is located between the upper and lower layers of the inner water chamber profiles 7.

[0028] In this embodiment, when a high-voltage current is applied to the WPTC, the WPTC receives a command from the vehicle and begins to energize the PTC heating element within the WPTC. The PTC heating element releases heat, and simultaneously, the coolant flows through the channel, carrying away the heat released by the PTC heating element. This heat then passes through the heater core and the battery pack, providing heating to the vehicle's passenger compartment and the battery pack. The front water chamber outer shell has two nozzles, left and right. The left nozzle is the coolant inlet, and the right nozzle is the coolant outlet after heating. The inner water chamber profile 7 is symmetrically distributed on both sides, and each inner water chamber profile 7 on both sides is divided into upper and lower layers. The PTC heating element is located between the upper and lower layers of the inner water chamber profile 7. (See reference...) Figure 2 The two inner water chamber profiles 7 on the left side are interconnected, see reference. Figure 4 The inner water chamber profiles 7 on the left and right sides of the upper layer are interconnected. There are three inner water chamber profiles 7 on the left and three inner water chamber profiles 7 on the right. According to the above design, the front water chamber assembly 1 and the water chamber heater 2 are fastened together with screws to form a "double U cross" shaped water chamber flow channel.

[0029] In use, the controller activates and supplies high-voltage power to the WPTC. The WPTC receives instructions from the vehicle and begins energizing the PTC heating element within it. The PTC heating element releases heat, and cold coolant enters from the water inlet on the left side of the front water chamber housing. The cold coolant is then divided into three streams by the left front water chamber pressure plate 5 and flows into the lower left inner water chamber profile 7 (see...). Figure 3 Then, the water flows from the lower left inner water chamber profile 7 into the upper left inner water chamber profile 7 (see...). Figure 2 Then, the water flows from the upper left inner water chamber profile 7 into the upper right inner water chamber profile 7 (see...). Figure 4 Finally, the coolant flows from the upper right inner water chamber profile 7 to the lower right inner water chamber profile 7, and the heated coolant is discharged from the right front water chamber outer shell water nozzle through the right front water chamber pressure plate 5 (see...). Figure 3 As the coolant flows through the above channels, a "double U-shaped cross" flow channel is formed, which allows the cold coolant to absorb and carry away the heat from the PTC heating pack, turning it into heated coolant. Then, it passes through the heater core and the battery pack to provide heat to the vehicle's passenger compartment and battery pack.

[0030] For further details, please refer to Figure 2 A front water chamber sealing ring 6 is provided at the connection between the front water chamber assembly 1 and the water chamber heater 2.

[0031] For further details, please refer to Figure 2 A rear water chamber sealing ring 9 is provided at the connection between the water chamber heater 2 and the rear housing 3.

[0032] In this embodiment, the front water chamber sealing ring 6 is used to increase the sealing between the front water chamber assembly 1 and the water chamber heater 2 to prevent coolant leakage; the rear water chamber sealing ring 9 is used to increase the sealing between the water chamber heater 2 and the rear housing 3 to prevent coolant leakage.

[0033] Furthermore, a control room is located inside the rear housing 3.

[0034] Furthermore, the control room is equipped with a controller, which is used to control the heating of the PTC heating pack.

[0035] In this embodiment, during use, the controller in the control room activates to supply high voltage to the WPTC. The WPTC receives instructions from the vehicle and begins to energize the PTC heating element in the WPTC. The PTC heating element releases heat for the coolant to absorb.

[0036] The working principle and usage process of this utility model are as follows: When in use, the controller starts and supplies high voltage to the WPTC. The WPTC receives the vehicle's command and begins to power the PTC heating pack in the WPTC. The PTC heating pack releases heat, and the cold coolant enters from the water nozzle of the left front water chamber shell. The cold coolant is divided into three streams by the left front water chamber pressure plate 5 and enters the lower left inner water chamber profile 7. Then, it flows from the lower left inner water chamber profile 7 into the upper left inner water chamber profile 7, then from the upper left inner water chamber profile 7 into the upper right inner water chamber profile 7, and finally from the upper right inner water chamber profile 7 to the lower right inner water chamber profile 7. Finally, the heated coolant is discharged from the right front water chamber shell water nozzle through the right front water chamber pressure plate 5. During the process of the coolant passing through the above flow channels, a "double U-shaped cross" flow channel is formed, so that the cold coolant absorbs the heat of the PTC heating pack and carries it out to become heated coolant. Then, it passes through the heater core and the battery pack to provide heat to the passenger compartment and the battery pack.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A WPTC assembly with a separated double U-shaped cross-shaped flow channel, characterized in that: It includes a front water chamber assembly (1), a water chamber heater (2), and a rear housing (3); The front end of the water chamber heater (2) is provided with the front water chamber assembly (1), and the rear end of the water chamber heater (2) is provided with the rear housing (3). The front water chamber assembly (1) includes a front water chamber shell (4) and a front water chamber pressure plate (5). The front water chamber shell (4) is provided with two front water chamber shell water nozzles that are symmetrically distributed on the left and right sides. The front water chamber pressure plate (5) is located behind the front water chamber shell water nozzles. The water chamber heater (2) is provided with a PTC heating pack inside. The water chamber heater (2) includes two sets of inner water chamber profiles (7) and outer water chamber profiles (8) symmetrically distributed on the left and right. The outer water chamber profiles (8) wrap the inner water chamber profiles (7). The two sets of inner water chamber profiles (7) symmetrically distributed on the left and right are interconnected. The two sets of inner water chamber profiles (7) symmetrically distributed on the left and right are divided into upper and lower layers and the upper and lower layers are interconnected. The PTC heating pack is located between the upper and lower layers of the inner water chamber profiles (7).

2. The WPTC assembly with a separated double U-shaped cross-shaped flow channel according to claim 1, characterized in that: A front water chamber sealing ring (6) is provided at the connection between the front water chamber assembly (1) and the water chamber heater (2).

3. The WPTC assembly with a separated double U-shaped cross-shaped flow channel according to claim 1, characterized in that: A rear water chamber sealing ring (9) is provided at the connection between the water chamber heater (2) and the rear housing (3).

4. The WPTC assembly with a separated double U-shaped cross-shaped flow channel according to claim 1, characterized in that: The rear housing (3) has a control room inside.

5. The WPTC assembly with a separated double U-shaped cross-shaped flow channel according to claim 4, characterized in that: The control room is equipped with a controller, which is used to control the heating of the PTC heating pack.

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