CN207554251U - For the engine heating unit under environment of extremely trembling with fear - Google Patents

Abstract

The utility model discloses a kind of engine heating units for extremely trembling with fear under environment, the engine heating unit includes boiler, engine water pump and thermostat, check valve is installed on pipeline between engine water pump and thermostat, which prevents hot water from flowing directly into thermostat from engine water pump via the pipeline.The engine heating unit of the utility model disclosure satisfy that the assembling and stability between diesel engine parts itself, between diesel engine and vehicle, this engine heating unit is simple in structure, stability is high, it can avoid the problem that generation recirculated water is short-circuit when boiler heats, cause hot water Efficient Cycle in engine, so as to which engine be made effectively to be heated.

Description

For the engine heating unit under environment of extremely trembling with fear

Technical field

The utility model is related to a kind of engine heating unit, a kind of more particularly to engine for extremely trembling with fear under environment adds Thermal.

Background technology

For existing diesel engine, at low ambient temperatures, starting performance can decline compared under normal temperature environment, and Temperature is lower, and startability is poorer, such as at -15 DEG C, usually rely on engine body can with across-the-line starting, at -30 DEG C, It relies on air inlet pipe and carries out air inlet auxiliary heating, can also start, but in environment temperature less than -35 DEG C or even in environment temperature When reaching less than -40 DEG C, also it is difficult to start up by the air inlet assisted heating device of engine body.It is therefore (fixed in the extremely low temperature of environment Justice is less than -35 DEG C) under the conditions of, it needs to take other engine assisted heating device to carry out heating to engine and just can ensure that The starting of engine, such as common boiler heat, i.e., the hot water after boiler is heated is sent to forced circulation in engine body, The hot water of cycle is gradually heated up cylinder sleeve, cylinder cap etc., when engine is heated to 20 DEG C or more, it can be ensured that engine smoothly rises It is dynamic.

Boiler heating cooling water circulation arrangement of the prior art should follow following cyclic process in the ideal situation：Pot At stove hot water outlet-engine water pump water inlet-engine water pump-diversion channel-water jacket-thermostat-recirculated water returns Boiler.Wherein, a part of hot water is also pumped into warm-air drier by thermostat.

But for the water cycle arrangement of the above-mentioned prior art, during boiler heats, due to the effect of thermostat, in water When temperature does not reach thermostat opening, recirculated water can be recycled in engine interior (such as Fig. 1 institutes by the partial circulating of thermostat Show)；When using boiler when heated, due to the partial circulating (partial circulating, that is, boiler water outlet-engine water pump water inlet of thermostat The cycle of mouth-thermostat-boiler water inlet) normal open in low temperature, after the hot water of boiler enters engine body, boiler institute band Small water pump forms low pressure at engine thermostat, makes to be directly over partial circulating into in-engine hot water to come back to boiler Water inlet (i.e. recirculated water short circuit), therefore cylinder sleeve of engine, cylinder cap (namely right half part component in Fig. 1) do not obtain actually Effectively heating.

The information for being disclosed in the background technology part is merely intended to increase the understanding to the general background of the utility model, and It is not construed as recognizing or implies that information composition has been existing well known to persons skilled in the art in any form Technology.

Utility model content

The purpose of this utility model is to provide a kind of engine heating units for extremely trembling with fear under environment, existing so as to overcome The shortcomings that short circuit of generation recirculated water, cylinder sleeve of engine, cylinder cap are not heated effectively when having the heating of technology boiler.

To achieve these goals, the utility model provides a kind of engine heating unit for extremely trembling with fear under environment, The engine heating unit is including boiler, engine water pump and thermostat, on the pipeline between engine water pump and thermostat Check valve is installed, check valve prevents hot water from flowing directly into thermostat from engine water pump via pipeline.

Preferably, in above-mentioned technical proposal, check valve includes：Shell, bottom are provided with multiple openings；Step face Part, is located at the inside of shell, and is connect with the centre position of outer casing bottom；And flexible sheet, the flexible sheet are set to more Between a opening and step face component, the inner end of flexible sheet is placed between the leave from office terrace of step face component and outer casing bottom, The outer end of flexible sheet resists outer casing bottom.

Preferably, in above-mentioned technical proposal, multiple flow passages are formed between flexible sheet and step face component, so that Hot water is obtained to flow to engine water pump by flow passage.

Preferably, in above-mentioned technical proposal, when hot water flows to engine water pump from thermostat, inner end is close to get out of a predicament or an embarrassing situation Face, outer end can move under pressure to the direction far from the outer casing bottom, hot water to be allowed to pass through check valve.

Preferably, in above-mentioned technical proposal, when hot water flows to thermostat from the engine water pump, inner end and outer end exist Outer casing bottom is resisted under pressure effect, so as to close multiple flow passages, hot water to be prevented to pass through check valve.

Compared with prior art, the utility model has the advantages that：

The meeting between diesel engine parts itself for the engine heating unit extremely trembled with fear under environment of the utility model, bavin Assembling and stability between oil machine and vehicle, this engine heating unit is simple in structure, and stability is high, can avoid boiler The problem of recirculated water is short-circuit occurs during heating so that hot water Efficient Cycle in engine, so as to which engine be made to obtain effectively adding Heat.

Description of the drawings

The block diagram of engine water cycle when Fig. 1 is boiler heating；

Fig. 2 is the block diagram that recirculated water short circuit occurs during boiler heating；

Fig. 3 is the front view of check valve according to the present utility model；

Fig. 4 is the vertical view of Fig. 3；

Fig. 5 is the sectional view along A directions of Fig. 4.

Main appended drawing reference explanation：

1- boilers, 2- thermostats, 3- engine water pumps, 4- check valves, 5- outer casing bottoms, 6- openings, 7- step face components, 8- flexible sheets, 9- inner ends, 10- outer ends.

Specific embodiment

Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described in detail, it is to be understood that this practicality Novel protection domain is not restricted by specific implementation.

Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " comprising " or its change It changes such as "comprising" or " including " etc. and will be understood to comprise stated element or component, and do not exclude other members Part or other component parts.

As shown in Figure 1, the engine heating unit for the prior art, which includes boiler 1, thermostat 2 and engine water pump 3.When boiler when heated, it will usually there are recirculated water short-circuit conditions as shown in Figure 1, i.e., from boiler hot The hot water that water out comes out enters the pipeline after engine water pump water inlet directly between engine water pump 3 and thermostat 2 P1 enters thermostat 2, so that cylinder sleeve of engine, cylinder cap (namely right half part component in Fig. 1) are not had actually Effect heating.Therefore, specific embodiment of the present invention is in engine for the engine heating unit extremely trembled with fear under environment Check valve 4 is installed on the pipeline P1 between water pump 3 and thermostat 2, check valve 4 so that hot water from via pipeline P1 from starting Machine water pump 3 flows directly into thermostat 2, i.e. the check valve 4 can force hot water to enter body cycle, heat when boiler heats Water comes back to boiler after body recycles by thermostat 2, hot water is promoted effectively to heat body, as shown in Figure 2.

As in Figure 3-5, check valve 4 includes：Shell, step face component 7 and flexible sheet 8.Outer casing bottom 5 is provided with more A opening 6.Step face component 7 is located at the inside of shell, and is connect with the centre position of outer casing bottom 5.Flexible sheet 8 is set to Between multiple openings 6 and step face component 7, the inner end 9 of flexible sheet 8 is placed in the leave from office terrace of step face component 7 and shell bottom Between portion 5, the outer end 10 of flexible sheet 8 resists the outer casing bottom 5.It is formed between flexible sheet 8 and step face component 7 more A flow passage, so that hot water can be flowed by flow passage to engine water pump.When boiler heats, it is being provided with list Into the engine heating unit of valve 4, hot water from engine water pump 3 flow to thermostat 2 when, the inner end 9 of flexible sheet 8 and outer end 10 resist outer casing bottom under pressure, and so as to close multiple flow passages, to prevent hot water, by check valve 4, hot water is just Cannot be by the partial circulating short-circuit flow of thermostat 2 into engine outfall sewer, and boiler dry point is arranged on outfall sewer, this The circulation style that sample hot water must be introduced into body-cylinder cap-outfall sewer flow back into boiler so that hot water is effective in engine Cycle, so as to which engine be made effectively to be heated.When boiler heating after the completion of, deactivate boiler, at this time by engine water pump into Row systemic circulation process：Boiler hot-water outlet-engine water pump water inlet-engine water pump-diversion channel-water jacket-thermostat- Engine water pump water inlet.When hot water flows to engine water pump 3 from thermostat 2, leave from office terrace is close in inner end 9, and outer end 10 exists Pressure effect is lower to be moved to the direction far from outer casing bottom 5, hot water to be allowed to pass through check valve 4.

The description of the aforementioned specific exemplary embodiment to the utility model is in order to illustrate and illustration purpose.These Description is not wishing to the utility model is defined to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out Many change and variations.The purpose of selecting and describing the exemplary embodiment is that explain the specific principle of the utility model And its practical application, so that those skilled in the art can realize and utilize a variety of different examples of the utility model Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shapes Formula is limited.

Claims (5)

1. a kind of engine heating unit for extremely trembling with fear under environment, which is characterized in that the engine heating unit includes pot Stove, engine water pump and thermostat are equipped with check valve, institute on the pipeline between the engine water pump and the thermostat Stating check valve prevents hot water from flowing directly into the thermostat from the engine water pump via the pipeline.

2. engine heating unit according to claim 1, which is characterized in that the check valve includes：

Shell, bottom are provided with multiple openings；

Step face component, is located at the inside of the shell, and is connect with the centre position of outer casing bottom；With

Flexible sheet, the flexible sheet are set between the multiple opening and the step face component, the flexible sheet Inner end is placed between leave from office terrace and the outer casing bottom of the step face component, and the outer end of the flexible sheet resists described Outer casing bottom.

3. engine heating unit according to claim 2, which is characterized in that in the flexible sheet and the step surface Multiple flow passages are formed between component, so that the hot water can be by the flow passage to the engine water pump stream It is dynamic.

4. engine heating unit according to claim 2, which is characterized in that when the hot water is flowed to from the thermostat During the engine water pump, the leave from office terrace is close in the inner end, and the outer end under pressure can be to far from described The direction movement of outer casing bottom, the hot water to be allowed to pass through the check valve.

5. engine heating unit according to claim 3, which is characterized in that when the hot water is from the engine water pump When flowing to the thermostat, the inner end and the outer end resist the outer casing bottom under pressure, described so as to close Multiple flow passages, the hot water to be prevented to pass through the check valve.