Vehicle heating

Abstract

The present application discloses a motor vehicle heater. A housing has a first receiving chamber and a second receiving chamber therein. The housing is provided with a liquid inlet pipe connecting the first receiving chamber to the outside environment and a liquid outlet pipe connecting the second receiving chamber to the outside environment. The housing has one or more openings therein connecting the first receiving chamber to the second receiving chamber. A plurality of heating elements are mounted in the housing and heat the liquid flowing through the first receiving chamber and the second receiving chamber. The present application enables effective prevention of the service life reduction caused by cavitation.

Description

CROSS-REFERENCE TO AFFECTED REGISTRATION

[0001] The present application claims priority over the Chinese patent application filed on January 22, 2024, with application number 202410086473.1 and patent title “Motor vehicle heater”, incorporating all disclosed contents thereof by reference herein. TECHNICAL AREA

[0002] The present application relates to the field of vehicle components, in particular a motor vehicle heater. STATE OF THE ART

[0003] Currently, there are two main technical approaches available for the heating function of vehicle air conditioning systems: air cooling (or fan cooling) and water cooling (or liquid cooling). A pressing problem with liquid cooling is that existing heaters are susceptible to internal cavitation damage, which leads to a shortened service life. REVELATION OF THE INVENTION

[0004] In view of the above technical problem, the present application is based on the task of providing a motor vehicle heater.

[0005] According to the present application, the problem is solved by a motor vehicle heater. It comprises: a housing comprising a first receiving chamber and a second receiving chamber, wherein the housing is provided with a liquid inlet pipe connecting the first receiving chamber to the outside environment and a liquid outlet pipe connecting the second receiving chamber to the outside environment, wherein the housing has one or more openings connecting the first receiving chamber to the second receiving chamber; a plurality of heating elements that are mounted in the housing and heat the liquid flowing through the first receiving chamber and the second receiving chamber.

[0006] The housing incorporates a partition assembly that divides a receiving space within the housing into the first receiving chamber and the second receiving chamber, wherein the partition assembly provides a plurality of through-slots connecting the first receiving chamber to the second receiving chamber, wherein the plurality of heating elements are each uniquely assigned to and embedded in the plurality of through-slots to close the multiple through-slots, and wherein part of each heating element is located in the first receiving chamber and another part is located in the second receiving chamber.

[0007] In this arrangement, adjacent heating elements in the first receiving chamber each form a first flow channel which is connected to the liquid inlet pipe, while adjacent heating elements in the second receiving chamber each form a second flow channel which is connected to the liquid outlet pipe, and wherein the several first flow channels are uniquely assigned to the several second flow channels and are thus connected via the several openings.

[0008] The housing has a first inner wall and a second inner wall located inside the housing, wherein the respective heating element has a first outer wall and a second outer wall opposite each other, and wherein the first outer wall abuts the first inner wall and the second outer wall abuts the second inner wall.

[0009] Each heating element has several first heat-conducting fins located in the respective first flow channel and several second heat-conducting fins located in the respective second flow channel.

[0010] The separating assembly comprises a plurality of plate sections of the first type, wherein a through-groove is provided between adjacent plate sections of the first type, and wherein each plate section of the first type consists of a plate section A of the first type and a plate section B of the first type, which are mounted on two adjacent heating elements and are in contact with each other.

[0011] The respective plate section of the first type consists of thermally conductive material and has several third thermally conductive fins on itself.

[0012] The separating assembly comprises at least two plate sections of the second type, wherein a plate section of the second type is mounted on one heating element adjacent to a third inner wall in the housing, and rests against the third inner wall; while a further plate section of the second type is mounted on one heating element adjacent to a fourth inner wall opposite the third inner wall in the housing, and rests against the fourth inner wall.

[0013] The respective plate section of the second type consists of thermally conductive material and has several fourth thermally conductive fins on itself.

[0014] The separating assembly includes a third-type plate section that rests against the inner wall of the housing to interrupt the connection between the liquid inlet pipe and the liquid outlet pipe.

[0015] The third-type plate section has several distributor plates of the first type, which serve to distribute the liquid flowing from the liquid inlet pipe into the first receiving chamber onto the several first flow channels; the third-type plate section has several distributor plates of the second type, which serve to combine the liquid flowing out through the several second flow channels and direct it towards the liquid outlet pipe.

[0016] The plate section of the third type rests against the end walls of the majority of heating elements facing the liquid inlet pipe, against the end walls of the majority of plate sections of the first type facing the liquid inlet pipe, and against the end walls of the two plate sections of the second type facing the liquid inlet pipe.

[0017] The housing comprises an outer shell open at one end and an end cap that is firmly mounted to the outer shell and closes the open end. The end cap has multiple mounting grooves, with multiple heating elements uniquely assigned to and firmly embedded in these grooves, thus sealing the respective grooves.

[0018] The liquid inlet pipe and the liquid outlet pipe are both mounted on the end wall of the outer shell opposite the end cover.

[0019] The opening is formed by a gap left between the majority of plate sections of the first type and the end cover, which connects the first receiving chamber with the second receiving chamber.

[0020] The plate section of the third type has a plurality of locking grooves, wherein the plurality of heating elements are uniquely assigned to the plurality of locking grooves and lock into place, with the end walls of the heating elements facing the liquid inlet pipe resting against the groove bottoms of the respective locking grooves.

[0021] When using the vehicle heater according to the present application, liquid enters the first receiving chamber through the liquid inlet pipe, then passes through the opening(s) into the second receiving chamber, and is finally discharged via the liquid outlet pipe. During its time in the first and second receiving chambers, the liquid is heated. Gas bubbles inevitably form during this heating process. If these gas bubbles adhere to the outer walls of the heating elements or the inner wall of the housing, cavitation can cause localized dry heating, which can damage the outer walls of the heating elements or the inner wall of the housing, reduce their service life, and even create safety hazards.The innovative design of the two separate chambers, namely the first and second receiving chambers, in the present application allows the first and second receiving chambers to be arranged one above the other in practical application. The first receiving chamber is positioned higher than the second, causing the liquid to enter the second receiving chamber upwards through the opening(s). This effectively accelerates the gas bubbles and allows them to be quickly discharged via the liquid outlet pipe. This provides effective protection for the outer walls of the heating elements and the inner wall of the housing, increasing their service life and eliminating safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] This shows Fig. 1 a sectional view of a specific embodiment of a motor vehicle heater according to the present application; Fig. 2 a sectional view of another specific embodiment of a motor vehicle heater according to the present application; Fig. 3 a partial structural view of a specific embodiment of a motor vehicle heater according to the present application; Fig. 4 a partial structural view of another specific embodiment of a motor vehicle heater according to the present application; Fig. 5 a partial structural view of a further concrete embodiment of a motor vehicle heater according to the present application; Fig. 6 a representation of a specific embodiment of a motor vehicle heater according to the present application. DETAILED DESCRIPTION OF THE EXECUTION FORMS

[0023] The technical solution of the present application is explained in detail below using specific embodiments. However, it is expressly pointed out that such embodiments serve only for illustrative purposes and must not be interpreted as limiting the scope of protection of the present application.

[0024] It will be on Fig. Points 1 and 2 are indicated. The present application provides for a motor vehicle heater. It includes: a housing 1 comprising a first receiving chamber 2 and a second receiving chamber 3, wherein the housing 1 is provided with a liquid inlet pipe 4 connecting the first receiving chamber 2 to the outside environment and a liquid outlet pipe 5 connecting the second receiving chamber 3 to the outside environment, wherein the housing 1 has one or more openings 8 connecting the first receiving chamber 2 to the second receiving chamber 3; a plurality of heating elements 6 which are mounted in the housing 1 and which heat the liquid flowing through the first receiving chamber 2 and the second receiving chamber 3.

[0025] Liquid enters the first receiving chamber 2 through the liquid inlet pipe 4, then passes through the opening 8 into the second receiving chamber 3, and is finally discharged via the liquid outlet pipe 5. During its time in the first receiving chamber 2 and the second receiving chamber 3, the liquid is heated. This heating process inevitably generates gas bubbles. If these gas bubbles adhere to the outer walls of the heating elements 6 or the inner wall of the housing 1, cavitation can cause localized dry heating, which can damage the outer walls of the heating elements 6 or the inner wall of the housing 1, reduce their service life, and even create safety hazards.The design of the two separate chambers, namely the first receiving chamber 2 and the second receiving chamber 3, in the present application allows the first receiving chamber 2 and the second receiving chamber 3 to be arranged one above the other in practical application. The first receiving chamber 2 is positioned higher than the second receiving chamber 3, which causes the liquid to enter the second receiving chamber 3 upwards through the opening 8. This effectively accelerates the gas bubbles and allows them to be quickly discharged via the liquid outlet pipe 5. This provides effective protection for the outer walls of the heating elements 6 and the inner wall of the housing 1, increasing their service life and eliminating safety risks.

[0026] It will be on Fig. Reference is made to sections 3 to 4. A partition assembly 7 is installed in the housing 1, dividing a receiving space within the housing 1 into the first receiving chamber 2 and the second receiving chamber 3. The partition assembly 7 includes a plurality of through-grooves 74 that connect the first receiving chamber 2 to the second receiving chamber 3. The plurality of heating elements 6 are each uniquely assigned to and embedded in the plurality of through-grooves 74 to close the multiple through-grooves 74. Part of each heating element 6 is located in the first receiving chamber 2 and another part in the second receiving chamber 3.

[0027] Adjacent heating elements 6 in the first receiving chamber 2 each form a first flow channel 21, which is connected to the liquid inlet pipe 4, while adjacent heating elements 6 in the second receiving chamber 2 each form a second flow channel 31, which is connected to the liquid outlet pipe 5. The multiple first flow channels 21 are uniquely assigned to the multiple second flow channels 31 and are thus connected via the multiple openings 8.

[0028] The liquid enters the first receiving chamber 2 via the liquid inlet pipe 4, is then distributed among the several first flow channels 21, and subsequently directed from each first flow channel 21 into the respective second flow channels 31, after which it is merged and discharged through the liquid outlet pipe 5. Since heating elements 6 are present on both sides of the first flow channels 21 or the second flow channels 31, the heat transfer surface area for the liquid flowing through the first flow channels 21 or the second flow channels 31 is significantly increased, thus improving heat transfer efficiency.At the same time, such a design allows the fluid, divided into several partial streams, to each take its own path, resulting in uniform heating and thus not only improving heat transfer efficiency but also effectively preventing turbulence, thereby increasing work efficiency.

[0029] The housing 1 has a first inner wall 11 and a second inner wall 12 located within the housing 1. Each heating element 6 has a first outer wall 61 and a second outer wall 62, which are opposite each other. The first outer wall 61 abuts the first inner wall 11, and the second outer wall 62 abuts the second inner wall 12.

[0030] Each heating element 6 has several first heat-conducting fins 63 located in the respective first flow channel 21 and several second heat-conducting fins 64 located in the respective second flow channel 31.

[0031] The second heat-conducting fins 64 increase the heat transfer surface area for the liquid, thereby increasing the heat transfer efficiency.

[0032] The separating assembly 7 comprises a plurality of plate sections of the first type 71. A through-groove 74 is provided between adjacent plate sections of the first type 71. Each plate section of the first type 71 consists of a plate section A of the first type 7101 and a plate section B of the first type 7102, which are mounted on two adjacent heating elements 6 and are in contact with each other.

[0033] The respective plate section of the first type 71 consists of thermally conductive material and has several third thermally conductive fins 711 on itself.

[0034] The plate sections of the first type 71 increase the heat transfer surface area for the liquid, thereby increasing the heat transfer efficiency.

[0035] The separating assembly 7 comprises at least two plate sections of the second type 72. On one heating element 6, which is adjacent to a third inner wall 13 in the housing 1, a plate section of the second type 72 is mounted, which abuts the third inner wall 13, while on one heating element 6, which is adjacent to a fourth inner wall 14 opposite the third inner wall 13 in the housing 1, another plate section of the second type 72 is mounted, which abuts the fourth inner wall 14.

[0036] The respective plate section of the second type 72 consists of thermally conductive material and has several fourth thermally conductive fins 721 on itself.

[0037] The plate sections of the second type 72 increase the heat transfer surface area for the liquid, thereby increasing the heat transfer efficiency.

[0038] The separating assembly 7 comprises a plate section of type 3 73 which rests against the inner wall of the housing 1 to interrupt the connection between the liquid inlet pipe 4 and the liquid outlet pipe 5.

[0039] The plate section of the third type 73 has several distributor plates of the first type 732, which serve to distribute the liquid flowing from the liquid inlet pipe 4 into the first receiving chamber 2 onto the several first flow channels 21. The plate section of the third type 73 has several distributor plates of the second type 733, which serve to concentrate the liquid flowing out through the several second flow channels 31 and direct it towards the liquid outlet pipe 5.

[0040] The plate section of the third type 73 is located at the end walls of the majority of heating elements 6 facing the liquid inlet pipe 4, at the end walls of the majority of plate sections of the first type 71 facing the liquid inlet pipe 4 and at the end walls of the two plate sections of the second type 72 facing the liquid inlet pipe 4.

[0041] It will be on Fig. 6. The housing 1 comprises an outer shell 101 open at one end and an end cover 102, which is fixedly mounted to the outer shell 101 and closes the open end of the outer shell 101. The end cover 102 has a plurality of mounting grooves 1021. The plurality of heating elements 6 are uniquely assigned to the plurality of mounting grooves 1021 and are firmly embedded therein, closing the respective mounting grooves 1021.

[0042] The liquid inlet pipe 4 and the liquid outlet pipe 5 are both mounted on the wall of the outer shell 101 opposite the end cover 102.

[0043] The gap remaining between the majority of plate sections of type 71 and the end cap 102, which connects the first receiving chamber 2 with the second receiving chamber 3, forms the respective opening 8. The liquid enters the first receiving chamber 2 through the liquid inlet pipe 4 at an end opposite the end cap 102, then flows to an end opposite the end cap 102, passes through the opening 8 located at an end opposite the end cap 102 into the second receiving chamber 3, and finally flows to the liquid outlet pipe 5 at an end opposite the end cap 102, after which it flows out. This causes the liquid in the housing 1 to travel the maximum possible flow path, which is equivalent to maximizing the heating time and consequently improving the heat transfer efficiency.

[0044] It will be on Fig.5. The plate section of the third type 73 has a plurality of locking grooves 731. The plurality of heating elements 6 are uniquely assigned to the plurality of locking grooves 731 and lock into place therein. The end walls of the heating elements 6 facing the liquid inlet pipe 4 rest against the groove bottoms of the respective locking grooves 731.

[0045] So far, only preferred specific embodiments of the present application have been described, which in no way limits the scope of protection of the application. Any equivalent substitutions or modifications made by persons skilled in the art familiar with this field, based on the embodiments and basic ideas of the present application, should be covered by the scope of protection of the application. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] CN 202410086473.1

[0001]

Claims

[1] Motor vehicle heating, including: a housing (1) comprising a first receiving chamber (2) and a second receiving chamber (3), wherein the housing (1) is provided with a liquid inlet pipe (4) connecting the first receiving chamber (2) to the outside environment and a liquid outlet pipe (5) connecting the second receiving chamber (3) to the outside environment, wherein the housing (1) has one or more openings (8) connecting the first receiving chamber (2) to the second receiving chamber (3); a plurality of heating elements (6) which are mounted in the housing (1) and which heat the liquid flowing through the first receiving chamber (2) and the second receiving chamber (3). [2] Motor vehicle heater according to claim 1, wherein a partition assembly (7) is installed in the housing (1) which divides a receiving space within the housing (1) into the first receiving chamber (2) and the second receiving chamber (3), wherein a plurality of through-grooves (74) are provided in the partition assembly (7) which connect the first receiving chamber (2) with the second receiving chamber (3), wherein the plurality of heating elements (6) are each uniquely assigned to and embedded in the plurality of through-grooves (74) in order to close the multiple through-grooves (74), and wherein a part of the respective heating element (6) is located in the first receiving chamber (2) and another part is located in the second receiving chamber (3). [3] Motor vehicle heater according to claim 2, wherein adjacent heating elements (6) in the first receiving chamber (2) each form a first flow channel (21) which is connected to the liquid inlet pipe (4), while adjacent heating elements (6) in the second receiving chamber (2) each form a second flow channel (31) which is connected to the liquid outlet pipe (5), and wherein the multiple first flow channels (21) are uniquely assigned to the multiple second flow channels (31) and are thus connected via the multiple openings (8). [4] Motor vehicle heater according to claim 3, wherein the housing (1) has a first inner wall (11) and a second inner wall (12) located in the housing (1), wherein the respective heating element (6) has a first outer wall (61) and a second outer wall (62) opposite each other, and wherein the first outer wall (61) abuts the first inner wall (11) and the second outer wall (62) abuts the second inner wall (12). [5] Motor vehicle heater according to claim 3, wherein the respective heating element (6) comprises several first heat-conducting fins (63) located in the respective first flow channel (21) and several second heat-conducting fins (64) located in the respective second flow channel (31). [6] Motor vehicle heater according to claim 3, wherein the separating assembly (7) comprises a plurality of plate sections of the first type (71), wherein a through groove (74) is provided between adjacent plate sections of the first type (71), and wherein the respective plate section of the first type (71) consists of a plate section A of the first type (7101) and a plate section B of the first type (7102), which are mounted on two adjacent heating elements (6) and are in contact with each other. [7] Motor vehicle heater according to claim 6, wherein the respective plate section of the first type (71) consists of heat-conducting material and has several third heat-conducting fins (711) on itself. [8] Motor vehicle heater according to claim 6, wherein the separating assembly (7) comprises at least two plate sections of the second type (72), wherein a plate section of the second type (72) is mounted on one heating element (6) adjacent to a third inner wall (13) in the housing (1), and abuts the third inner wall (13); while a further plate section of the second type (72) is mounted on one heating element (6) adjacent to a fourth inner wall (14) opposite the third inner wall (13) in the housing (1), and abuts the fourth inner wall (14). [9] Motor vehicle heater according to claim 8, wherein the respective plate section of the second type (72) consists of heat-conducting material and has several fourth heat-conducting fins (721) on itself. [10] Motor vehicle heater according to claim 8, wherein the separating assembly (7) comprises a plate section of a third type (73) which rests against the inner wall of the housing (1) to interrupt the connection between the liquid inlet pipe (4) and the liquid outlet pipe (5). [11] Motor vehicle heater according to claim 10, wherein the plate section of the third type (73) comprises several distributor plates of the first type (732) which serve to distribute the liquid flowing from the liquid inlet pipe (4) into the first receiving chamber (2) onto the several first flow channels (21); wherein the plate section of the third type (73) comprises several distributor plates of the second type (733) which serve to combine the liquid flowing out through the several second flow channels (31) and to direct it towards the liquid outlet pipe (5). [12] Motor vehicle heater according to claim 10, wherein the plate section of the third type (73) abuts the end walls of the plurality of heating elements (6) facing the liquid inlet pipe (4), abuts the end walls of the plurality of plate sections of the first type (71) facing the liquid inlet pipe (4) and abuts the end walls of the two plate sections of the second type (72) facing the liquid inlet pipe (4). [13] Motor vehicle heater according to claim 2, wherein the housing (1) comprises an outer shell (101) open at one end and an end cover (102) which is fixedly mounted on the outer shell (101) and closes the open end of the outer shell (101), wherein a plurality of mounting grooves (1021) are formed on the end cover (102), wherein the plurality of heating elements (6) are uniquely assigned to the plurality of mounting grooves (1021) and are firmly embedded therein and close the respective mounting grooves (1021). [14] Motor vehicle heater according to claim 13, wherein the liquid inlet pipe (4) and the liquid outlet pipe (5) are both mounted on the end wall of the outer shell (101) opposite the end cover (102). [15] Motor vehicle heater according to claim 13, wherein a gap leaving between the plurality of plate sections of the first type (71) and the end cover (102), which connects the first receiving chamber (2) with the second receiving chamber (3), forms the respective opening (8). [16] Motor vehicle heater according to claim 10, wherein the plate section of the third type (73) has a plurality of locking grooves (731) itself, wherein the plurality of heating elements (6) are uniquely assigned to the plurality of locking grooves (731) and lock into place therein, wherein the end walls of the heating elements (6) facing the liquid inlet pipe (4) bear against the groove bottoms of the respective locking grooves (731).

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