Heating device of vehicle

Abstract

The present invention relates to a heating device for a vehicle, and may include a preheater for heating cold start coolant and a valve section for allowing the coolant heated in the preheater to flow variably according to the vehicle conditions. In addition, the vehicle heating device described above can be implemented in various ways depending on the embodiment.

Description

Technology Field

[0001] The present invention relates to a vehicle heating device, and more specifically, to a vehicle heating device capable of controlling the flow of coolant during cold start and cold heating through a three-way valve. Background Technology

[0002] In certain operating conditions of an internal combustion engine, such as when starting a vehicle at ambient temperature, driving short distances, or driving long distances downhill, particularly when efficiency is very high—such as with direct fuel injection internal combustion engines, high-pressure diesel injection internal combustion engines with a common high-pressure tank, or internal combustion engines equipped with a turbocharger—the introduction of heat into the coolant through the internal combustion engine itself is no longer sufficient, as there is little heat loss. As a result, the internal combustion engine and its catalytic converter may not reach the optimal temperature within the short time available for use, or it may take a long time to reach the optimal temperature, which can lead to problems such as increased fuel consumption and increased exhaust gas emissions.

[0003] Furthermore, when the external temperature is low and the vehicle's surrounding environment is cold, separate energy or fuel is required to remove frost from the windows or heat the interior, which also affects driving safety and ride comfort. Additionally, future drive concepts such as hybrid vehicles require an additional heat source to heat the vehicle interior or catalytic converter during electric operation. Currently, these problems are primarily addressed through separate chemical or electric heaters. For example, chemical heaters, such as burners, can provide high comfort by heating even when the internal combustion engine is stopped, but they have the drawback of being relatively expensive. Conventional electric generators based on the principle of resistance heating cannot supply arbitrarily large currents, resulting in a problem where heating performance is severely limited in terms of output.

[0004] In addition, when using engine coolant to implement heating, the engine coolant only rises to about 16 to 17 degrees in a low-temperature environment, so there is a problem in that it does not satisfy the requirements to raise the minimum heating temperature to about 19 degrees.

[0005] Therefore, there is a need for a vehicle heating system that heats the coolant to raise the engine temperature when starting the vehicle in a low-temperature environment, and enables heating of the vehicle interior after a cold start. Prior art literature

[0006] Japanese Registered Patent No. JP5786615 (Registration Date: August 7, 2015) The problem to be solved

[0007] The technical problem that the present invention aims to solve is to provide a vehicle heating device that utilizes a preheater and a three-way valve to allow coolant heated in the preheater to flow to an engine heat exchanger for the purpose of raising the engine temperature during a cold start, and to flow to a heating device during low-temperature heating after a cold start.

[0008] The problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0009] A vehicle heating device according to an embodiment of the present invention is,

[0010] A preheater for heating cold start coolant; and

[0011] It may include a valve section that allows the coolant heated in the above-mentioned preheater to flow variably according to the vehicle's conditions.

[0012] An engine heat exchanger that indirectly heat exchanges engine coolant with coolant heated in the preheater; and

[0013] It may include a heating device that supplies high-temperature air into the room using cooling water heated in the above-mentioned preheater.

[0014] The above valve section can control the direction of movement to supply the cooling water heated in the above preheater to the engine heat exchanger or to the heating device.

[0015] The above valve section is opened to supply coolant heated in the above preheater to the engine heat exchanger to raise the engine temperature during cold start, and

[0016] The above valve section can be opened to supply the cooling water heated in the above preheater to the heating device for low-temperature heating after low-temperature starting.

[0017] The above valve section is located between the engine heat exchanger and the heating device's flow path, so that the heating device and the engine heat exchanger can be arranged in a series structure centered on the valve section.

[0018] The above valve section is located between the preheater, the engine heat exchanger, and the heating device, so that the heating device can be arranged in a parallel combined structure with the engine heat exchanger.

[0019] Specific details of other embodiments are included in the detailed description and drawings. Effects of the invention

[0020] The vehicle heating device according to the embodiment of the present invention as described above has the advantage of being able to shorten the vehicle starting time and limit the increase in fuel efficiency by using a three-way valve to allow the coolant heated in the preheater to flow to the engine heat exchanger when starting the vehicle in a low-temperature environment.

[0021] In addition, the heating device according to the embodiment of the present invention has the advantage of being able to raise the internal temperature of the vehicle by adjusting the three-way valve so that the coolant heated in the preheater flows into the heating device, thereby raising the temperature inside the vehicle in a low-temperature state after the vehicle is started.

[0022] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description in the claims. Brief explanation of the drawing

[0023] FIG. 1 is a schematic block diagram of a heating device for a vehicle according to one embodiment of the present invention. FIG. 2 is a block diagram of a different combined structure of a heating device and an engine heat exchanger in a vehicle heating device according to one embodiment of the present invention. Specific details for implementing the invention

[0024] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0025] Accordingly, in some embodiments, well-known process steps, well-known structures, and well-known techniques are not specifically described to avoid the invention being interpreted ambiguously.

[0026] The terms used herein are for describing the embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. As used herein, "comprises" and / or "comprising" are used in the sense that they do not exclude the presence or addition of one or more other components, steps, actions, and / or elements other than those mentioned. And, "and / or" includes each of the mentioned items and all combinations of one or more.

[0027] Furthermore, the embodiments described herein will be explained with reference to cross-sectional views and / or schematic drawings, which are exemplary illustrations of the invention. Accordingly, the form of the exemplary drawings may be modified due to manufacturing techniques and / or tolerances, etc. Therefore, the embodiments of the invention are not limited to the specific forms depicted but include variations in form resulting from the manufacturing process. Additionally, in each drawing of the invention, each component may be depicted slightly enlarged or reduced for convenience of explanation. Throughout the specification, the same reference numerals refer to the same components.

[0028] Hereinafter, a vehicle heating device (100) will be described according to embodiments of the present invention.

[0029] FIG. 1 is a schematic block diagram of a heating device (100) of a vehicle according to one embodiment of the present invention.

[0030] Referring to FIG. 1, a heating device (100) of a vehicle according to one embodiment of the present invention may include a preheater (110), a valve section (120), an engine heat exchanger (130), a heating device (140), and a coolant pump (150).

[0031] A coolant pump (150) may be provided to control the flow of coolant for cold start and heating inside the vehicle. The coolant pump (150) may be configured to be positioned between the heating device (140) and the preheater (110), which will be described later, to flow coolant to the preheater (110).

[0032] The above preheater (110) may be configured to heat the cold start coolant flowing through the coolant pump (150). Additionally, it may be configured to heat the cold start coolant for heating the vehicle after the cold start.

[0033] The above valve section (120) may be configured so that the coolant heated in the above preheater (110) flows variably according to the vehicle conditions.

[0034] As described later, the coolant heated in the preheater (110) can indirectly heat the engine through the engine heat exchanger (130) described later, and then be heated again in the preheater (110) and flow into the engine heat exchanger (130) according to the flow direction control of the valve section (120), or alternatively, flow into the heating device (140) described later.

[0035] The engine heat exchanger (130) may be positioned adjacent to the engine of the engine system (10) and configured to indirectly heat exchange the engine coolant flowing along the coolant path with the coolant heated in the preheater (110).

[0036] Here, the engine system (10) is configured as a flow path for cooling the heat of the engine driven around the engine, and may be provided with a structure to implement engine starting initially through the cooling water indirectly heated in the engine heat exchanger (130) described above (a flow structure in which the cooling water indirectly heated in the engine heat exchanger (130) flows to an electric engine cooling water pump (150), a mechanical cooling water pump (150), and the engine) or a cooling water flow structure for cooling the engine after starting (a flow structure in which the cooling water that has received the heat of the engine flows to a hot water controller and a radiator, and then flows back to the mechanical cooling water pump (150).

[0037] The heating device (140) may be configured to supply high-temperature air into the room using cooling water heated in the preheater (110).

[0038] As described above, the valve section (120) may be configured to control the direction of movement to supply the cooling water heated in the preheater (110) to the engine heat exchanger (130) or to the heating device (140).

[0039] In order to supply heat to the engine when starting a vehicle in a low-temperature environment, the preheater (110) is configured to heat the coolant and raise the heat of the coolant of the engine system (10) through the engine heat exchanger (130). Accordingly, the valve section (120) is opened to supply the coolant heated in the preheater (110) to the engine heat exchanger (130) to raise the engine temperature during low-temperature starting, thereby forming a flow path through which the coolant flows to the coolant pump (150), the preheater (110), and the engine heat exchanger (130).

[0040] As described above, since there is no need to implement heating of the engine after the vehicle is started by applying heat to the engine for starting the vehicle, the valve section (120) can be controlled to vary the flow path of the coolant so that the coolant heated in the preheater (110) can be used for heating the vehicle. That is, the valve section (120) is opened to supply the coolant heated in the preheater (110) to the heating device (140) for low-temperature heating after starting the vehicle in a low temperature, thereby forming a flow path through which the coolant flows to the coolant pump (150), the preheater (110), the engine heat exchanger (130), and the heating device (140).

[0041] In one embodiment of the present invention, the valve section (120) is located between the engine heat exchanger (130) and the heating device (140) so that the heating device (140) and the engine heat exchanger (130) can be arranged in a series structure centered on the valve section (120).

[0042] That is, the valve section (120) may be configured to allow the coolant discharged from the engine heat exchanger (130) to go back to the coolant pump (150), or may have a structure connected in series to go to the heating device (140).

[0043] FIG. 2 is a block diagram of a different combined structure of a heating device (140) and an engine heat exchanger (130) in a heating device (100) of a vehicle according to one embodiment of the present invention.

[0044] As illustrated in FIG. 2, the vehicle heating device (100) of the present invention has all components as described above, but differs from the vehicle heating device (100) described above in the flow structure through which the coolant discharged from the preheater (110) flows.

[0045] Specifically, the heating device (100) of the vehicle described above has a structure in which the engine heat exchanger (130) and the heating device (140) are connected in series around the valve section (120), but the valve section (120) of FIG. 2 may be located between the preheater (110), the engine heat exchanger (130), and the heating device (140), so that the heating device (140) is arranged in a parallel connection structure with the engine heat exchanger (130).

[0046] Accordingly, the cooling water heated in the above preheater (110) may have a flow structure in which it is not immediately transferred to the engine heat exchanger (130), but is discharged to the engine heat exchanger (130) by the valve part (120), or otherwise discharged directly to the heating device (140).

[0047] Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention may be implemented in other specific forms without changing its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. Explanation of the symbols

[0048] 10: Engine System 100: Vehicle heating system 110: Preheater 120: Valve section 130: Engine heat exchanger 140: Heating device 150: Coolant pump P1: Heated coolant flow path P2: Engine system coolant flow path

Claims

Claim 1 A heating device for a vehicle comprising: a cooling water pump for flowing cooling water; a preheater for heating the cooling water for cold start flowing through the cooling water pump; an engine heat exchanger for indirectly heat-exchanging the engine cooling water and the cooling water heated in the preheater; a heating device for supplying high-temperature air into the interior using the cooling water heated in the preheater; and a valve portion for controlling the direction of movement to supply the cooling water heated in the preheater to the engine heat exchanger or to the heating device, wherein the valve portion is opened to supply the cooling water heated in the preheater to the engine heat exchanger to raise the engine temperature during cold start, and is opened to supply the cooling water heated in the preheater to the heating device for low-temperature heating after the engine is started. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 delete

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