CN214138466U

CN214138466U - Steam type car washer

Info

Publication number: CN214138466U
Application number: CN202022468245.0U
Authority: CN
Inventors: 程晓飞; 吴田; 叶超平; 王意; 田丽; 胡波; 胡平波; 柴斌; 钟俊峰; 刘俊良; 欧勤政
Original assignee: Shenzhen Daozhong Innovation Technology Co ltd
Current assignee: Shenzhen Daozhong Innovation Technology Co ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-09-07
Anticipated expiration: 2030-10-30

Abstract

The embodiment of the utility model discloses steam type car washer, include: a cart body; the main control board is arranged in the cart body; the battery module is arranged in the cart body and is connected with the main control board; the water tank is arranged in the cart body and is connected with the main control board; the heating body is arranged in the cart body and is connected with the water tank through a filtering water pump assembly, the heating body is also connected with the battery module, and the filtering water pump assembly is also connected with the main control panel; the display screen is arranged on the cart body and connected with the main control board; the heating body is also connected with the water tank through a pressure limiting protection assembly, and the pressure limiting protection assembly is also connected with the main control board; the temperature limiting protection component is arranged on the outer wall of the heating body; and the steam spray gun is connected with the heating body through a connecting pipeline. The automobile cleaning device has the advantages that the automobile cleaning device can be conveniently used by pushing the automobile cleaning device to the automobile to be cleaned during use, and pollution to the environment is avoided due to the adoption of a rechargeable battery module which is an environment-friendly and safer power supply mode.

Description

Steam type car washer

Technical Field

The utility model relates to a technical field of steam car washer especially relates to a steam type car washer.

Background

At present, steam car washing machines are applied to car washing, and the existing steam car washing machines generally burn diesel oil or natural gas to boil water in a boiler in the steam car washing machine to generate high-temperature steam which is then sprayed to a car to be washed so as to wash the car. However, the existing steam car washer is easy to generate noise and pollution emission and has the risks of flammability and explosiveness. Moreover, the whole steam car washer is large and is not convenient to move everywhere. Accordingly, there is a need in the art for further improvements.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a steam type car washer aims at solving among the prior art steam car washer and generally burns with combustible fuel such as burning diesel oil or natural gas and produces a large amount of heats in order to heat the water in the steam car washer and produce high temperature steam, but the in-process of burning fuel easily produces polluting the emission, still has easily fires explosive risk, and is not in the problem of everywhere removal.

The embodiment of the utility model provides a steam type car washer, wherein, include:

a cart body;

the main control board is arranged in the cart body;

the battery module is arranged in the cart body and is connected with the main control board;

the water tank is arranged in the cart body and is connected with the main control board;

the heating body is arranged in the cart body and is connected with the water tank through a filtered water pump assembly, the heating body is also connected with the battery module, and the filtered water pump assembly is also connected with the main control panel;

the display screen is arranged on the cart body and connected with the main control board;

the heating body is also connected with the water tank through a pressure limiting protection assembly, and the pressure limiting protection assembly is also connected with the main control board;

the temperature limiting protection assembly is arranged on the outer wall of the heating body and is connected with the main control board;

and the steam spray gun is connected with the heating body through a connecting pipeline.

The utility model discloses steam type car washer, include: a cart body; the main control board is arranged in the cart body; the battery module is arranged in the cart body and is connected with the main control board; the water tank is arranged in the cart body and is connected with the main control board; the heating body is arranged in the cart body and is connected with the water tank through a filtering water pump assembly, the heating body is also connected with the battery module, and the filtering water pump assembly is also connected with the main control panel; the display screen is arranged on the cart body and connected with the main control board; the heating body is also connected with the water tank through a pressure limiting protection assembly, and the pressure limiting protection assembly is also connected with the main control board; the temperature limiting protection component is arranged on the outer wall of the heating body and is connected with the main control board; and the steam spray gun is connected with the heating body through a connecting pipeline. The utility model discloses a steam type car washer promotes when using and can facilitate the use to treating to wash car department, avoids the pollution to the environment because of adopting the more environment-friendly safer power supply mode of rechargeable battery module moreover.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic structural diagram of a first view angle in a steam type car washer according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second view angle in the steam car washer according to the embodiment of the present invention;

fig. 3 is a schematic structural view of a third viewing angle after a partial shell of the cart body is removed from the steam car washer according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a fourth viewing angle after a partial shell of the cart body is removed from the steam car washer according to the embodiment of the present invention;

fig. 5 is a block diagram of a steam car washer according to an embodiment of the present invention;

fig. 6 is a block diagram illustrating a structure of a region from a water tank to a heating member in the steam car washer according to an embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc. refer to directions of the attached drawings only. Accordingly, the directional terms used are used for describing and understanding the present invention, and are not used for limiting the present invention.

Please refer to fig. 1-6, wherein fig. 1 is a schematic structural diagram of a first view angle in a steam type car washer according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of a second view angle in the steam car washer according to the embodiment of the present invention; fig. 3 is a schematic structural view of a third viewing angle after a partial shell of the cart body is removed from the steam car washer according to the embodiment of the present invention; fig. 4 is a schematic structural diagram of a fourth viewing angle after a partial shell of the cart body is removed from the steam car washer according to the embodiment of the present invention; fig. 5 is a block diagram of a steam car washer according to an embodiment of the present invention; fig. 6 is a block diagram illustrating a structure of a region from a water tank to a heating member in the steam car washer according to an embodiment of the present invention. As shown in fig. 1 to 6, the steam type car wash apparatus includes:

a cart body 100;

a main control board 110 disposed in the cart body 100;

a battery module 120 disposed in the cart body 100, wherein the battery module 120 is connected to the main control board 110;

a water tank 130 disposed in the cart body 100, wherein the water tank 130 is connected to the main control panel 110;

the heating body 140 is arranged in the cart body 100, the heating body 140 is connected with the water tank 130 through a filtered water pump assembly 150, the heating body 140 is further connected with the battery module 120, and the filtered water pump assembly 150 is further connected with the main control board 110;

the display screen 200 is arranged on the cart body 100, and the display screen 200 is connected with the main control board 110;

the heating body 140 is also connected with the water tank through a pressure limiting protection component 160, and the pressure limiting protection component 160 is also connected with the main control board 110;

the temperature limiting protection component 170 is arranged on the outer wall of the heating body 140, and the temperature limiting protection component 170 is connected with the main control board 110;

and a steam spray gun 300 connected to the heating body 140 through a connection pipe.

In the embodiment, after the steam car washer is turned on (specifically, a start switch is disposed on the main control board to switch the main control board to the power-on state), when the water in the water tank 130 is pumped into the heating body 140 through the filtered water pump assembly 150, the battery module 120 can supply power to the heating body 140 to heat the water in the heating body 140 to the saturated water vapor state, and the water is sprayed out of the steam spray gun 300 to clean the object to be cleaned. The saturated water vapor state can thermally dissolve stains on the surface of the object to be cleaned, and the cleaning efficiency is improved.

A liquid level detection device (i.e., a float switch) is disposed in the water tank 130 to transmit the detected liquid level information to the main control board 110. For example, when the liquid level in the water tank 130 is lower than the set minimum liquid level, an alarm is given in time (for example, a voice prompt is given to replenish water); when the liquid level in the water tank 130 is higher than the set maximum liquid level, an alarm is given in time to avoid the overflow of the water in the water tank.

In specific implementation, the cart body 100 includes a cart flat plate structure and a sliding wheel disposed on a lower end surface of the cart flat plate structure; the trolley comprises a trolley flat plate structure, a trolley handle and a trolley shell, wherein the trolley handle is arranged on the trolley flat plate structure, and the trolley shell is arranged on the trolley flat plate structure (for example, a battery module, a water tank and the like are arranged in the trolley shell); the trolley comprises a trolley handrail and a trolley braking structure (refer to a bicycle braking structure) which is arranged on the trolley handrail and used for braking a sliding wheel. By providing the cart body 100 of this structure, stable operation of the steam car washer on a slope is facilitated.

Wherein, the top of the water tank 130 is also provided with a water filling port, which can add water to the water tank 130 through an external water pipe, and can also add water by pouring the water with a barreled device into the water tank 130 through the water filling port, and can also place the steam spray gun 300 aiming at the water filling port to collect the water that may flow out from the steam spray gun 300 when the steam spray gun is just started without high-temperature steam.

The main control panel 110 is further provided with a communication module (such as a 4G module, a 5G module, a bluetooth module, etc.), the display screen 200 can display the remaining power of the battery module 130, and the countdown display of the remaining time of the car washing is performed.

In one embodiment, as shown in fig. 1, 2 and 5, the steam car washer further includes:

a cleaner 400 connected to the main control board 110;

a cleaner support plate 410 which is provided on an outer wall of the cart body 100 and rotatably received;

a storage box 500 disposed on an outer wall of the cart body 100;

a hanging bar 600 provided on an outer wall of the cart body 100.

In this embodiment, except that the object to be cleaned is cleaned by high-temperature steam, the object to be cleaned can be cleaned by the dust collector to remove dust, so that the cleaning effect is better due to the double cleaning of the object to be cleaned. For example, the object to be cleaned is first sucked by the vacuum cleaner 400 to remove the surface dust layer of the interior of the vehicle, and then the surface of the housing of the object to be cleaned is cleaned by the high-temperature steam. When the dust collector 400 is required to be used, the connector lug of the dust collector 400 is connected with the dust collector socket (namely, the battery module supplies power to the dust collector after being stepped down by the third battery 123 in the battery module 120 through the second transformer), then the body of the dust collector 400 is placed on the dust collector support plate 410, and the dust collector head of the dust collector 400 is pulled out to be aligned with the interior trim of the vehicle to open the dust collector switch so as to absorb the surface dust layer.

The storage box 500 provided on the outer wall of the cart body 100 can be used to store articles (such as cleaning solution, towel for wiping purpose, etc.) required for cleaning the object to be cleaned, which is convenient for the user to store articles.

The hanging bar 600 provided on the outer wall of the cart body 100 can be used to hang articles (such as towels for wiping) required for cleaning the objects to be cleaned, thereby facilitating the placement of the articles by the user.

In one embodiment, as shown in fig. 3 and 5, the battery module 120 includes a first battery 121, a second battery 122, and a third battery 123, the first battery 121 is connected to the heating body 140 through a first controller 121a, the second battery 122 is connected to the heating body 140 through a second controller 122a, the third battery 123 is connected to the heating body 140 through a third controller 123a, the third battery 123 is further connected to the main control board 110 through a first transformer 123b, and the third battery 123 is further connected to the filtered water pump assembly 150 through a fourth controller 124 and a second transformer 125 in sequence.

In this embodiment, the battery module 120 employs at least 3 lithium batteries, which are respectively denoted as a first battery 121, a second battery 122, and a third battery 123, and all of the 3 batteries can be repeatedly charged and used. More specifically, the powers of the first battery 121 to the third battery 123 are respectively set to X1 kw, X2 kw, and X3 kw, 5 heating wires are further provided in the heating body 140, and the first heating wire to the fifth heating wire are respectively switched, so that the first heating wire and the second heating wire are powered by the first battery 121, the third heating wire and the fourth heating wire are powered by the second battery 122, the fifth heating wire is powered by the third battery 123, and the heating power when the 5 heating wires heat the water in the heating body 140 is Y kw (Y < X1+ X2+ X3). With the above arrangement, the remaining X1+ X2+ X3-Y kw of the third battery 123 may power the main control board 110, the filtered water pump assembly 150, the vacuum cleaner 400, and the like.

Through using the rechargeable battery module 120, the user can move the cart body 100 by pushing the cart body without connecting with an alternating current when using the steam type car washing device, so that the cart can be conveniently moved to the position of the object to be cleaned under the condition that the electric energy is supplied, and the limitation of the power receiving port is avoided.

The first transformer 123a is used for reducing the voltage provided by the battery module 120 to 12V to supply power to the main control board 110; the second transformer 125 is used for reducing the voltage provided by the battery module 120 to 48V to power the filtered water pump assembly 150 and the vacuum cleaner 400; the first controller 121a, the second controller 122a, the third controller 123a and the fourth controller 124 adopt relays or MOS transistors.

In one embodiment, as shown in fig. 5 and 6, the water tank 130 is connected to the filtered water pump assembly 150 through the first and second three-

way valves

131 and 132 in sequence, and the water tank is also connected to the descaling-water pump 150 through the first and second three-

way valves

131 and 132 in sequence.

In this embodiment, in order to provide more options for the flow direction of water in the water tank 130, a first three-way valve 131 and a second three-way valve 132 may be added to the water path between the water tank 130 and the filtered water pump assembly 150, which addition of the first three-way valve 131 and the second three-way valve 132 also controls the flow of water from the water tank 130 to the descaling-water pump 150.

More specifically, as shown in fig. 5 and 6, a first three-way valve inlet end 131a of the first three-way valve 131 is connected to the water tank 130, a first three-way valve first outlet end 131b of the first three-way valve 131 is connected to a second three-way valve inlet end 132a of the second three-way valve 132, a second three-way valve first outlet end 132b of the second three-way valve 132 is connected to the descaling-water pump 150, and a second three-way valve second outlet end 132c of the second three-way valve 132 is connected to the filtered-water pump assembly 150. Through using the three-way valve, be convenient for more carry out reposition of redundant personnel control to the flow direction of water to realize that water gets into the water route that corresponds according to the in-service use demand.

In one embodiment, as shown in fig. 5 and 6, the filtered water pump assembly 150 includes a filter 151, a flow meter 152, a first water pump 153, and a first one-way valve 154;

an inlet end of the filter 151 is connected to the second three-way valve 132, and an outlet end of the filter 151 is connected to an inlet end of the flow meter 152;

the outlet end of the flow meter 152 is connected with one end of the first water pump 153;

the other end of the first water pump 153 is connected to an inlet of the first check valve 154, and the first water pump 153 is further connected to the fourth controller 124 through a second transformer 125; the first water pump 153 is a high-pressure plunger pump, and the fourth controller 124 is connected to the main control board 110;

the outlet end of the first check valve 154 is connected to the heating body 140.

In this embodiment, specifically, the inlet end of the filter 151 is connected to the second outlet end 132c of the second three-way valve. At this time, if the steam car washer is in the activated state, the water in the water tank 130 firstly flows in through the inlet 131a of the first three-way valve, then flows from the first outlet 131b of the first three-way valve to the inlet 132a of the second three-way valve, and finally flows from the second outlet 132c of the second three-way valve to the inlet of the filter 151.

At this time, the water flowing into the filter 151 is filtered by the filter material to remove the magnesium ions, calcium ions and other mineral chemicals, and then flows to the first water pump 153, so that the first water pump 153 pumps the water into the heating body 140.

A first check valve 154 is further provided between the first water pump 153 and the heating body 140 in order to prevent high-temperature water or steam in the heating body 140 from flowing back to the first water pump 153 and the water tank 130. And the first water pump 153 adopts a high pressure plunger pump, and water is primarily filtered through the filter 151 before entering the high pressure plunger pump, so as to reduce damage to the high pressure plunger pump and delay the time of scaling in the heating body 140.

In one embodiment, as shown in fig. 5, the pressure limiting protection assembly 160 comprises a pressure switch 161 and a relief valve 162 provided on the connecting line; the pressure switch 161 is connected to the main control board 110, and the safety valve 162 is further provided with a pressure relief exhaust pipe (not shown in the figure).

In this embodiment, the pressure limiting protection assembly 160 is used for monitoring the pressure of the pipeline in the steam car washer in real time. If the steam car washer is in the on state, after the water in the heating body 140 is heated to high-temperature steam, if the user does not press the air injection switch on the steam spray gun 300, the steam will be accumulated in the pipeline in the steam car washer continuously to cause pressure increase, and if the steam cannot be released in time, the pipeline pressure will be too high to damage the pipeline.

At this time, the pressure at the outlet of the heating body 140 can be monitored in real time by the pressure limiting protection assembly 160. Specifically, the upper limit of the pressure of the relief valve 161 is set to P1 (for example, equal to 2 Bar), the upper limit of the pressure switch 162 sending the stop signal is set to P2 (for example, equal to 1.5 Bar), when the pressure at the outlet of the heating body 140 rises to P2 due to the continuous accumulation of gas, if the pressure switch 162 detects the pressure value corresponding to P2 at this time, a stop signal is generated and sent to the main control board 110 to control the heating body 140 to stop water boiling to continue to generate water vapor. However, in the actual operation process, when the pressure switch 162 generates a shutdown signal due to too fast pressure rise or its own failure does not detect the pressure value corresponding to the P2, the safety valve 162 is also used as a second layer protection. When the pressure in the pipeline rapidly exceeds P2 and reaches P1, the safety valve 162 releases the pressure in time, i.e., the gas in the pipeline is exhausted through the pressure relief exhaust pipe. For example, the other end of the pressure relief exhaust pipe is placed in the water tank 130, and at the moment, the gas in the pipeline can be discharged into the water in the water tank through the pressure relief exhaust pipe, so that the pipeline is effectively protected.

In one embodiment, as shown in fig. 5, the temperature limiting protection assembly 170 includes a first temperature sensor 171, a second temperature sensor 172, and a temperature switch 173; the first temperature sensor 171, the second temperature sensor 172 and the temperature switch 173 are all connected to the main control board 110.

In the present embodiment, the first temperature sensor 171, the second temperature sensor 172, and the temperature switch 173 are provided on the outer wall of the heating body 140, and the temperature of the high-temperature steam inside the heating body 140 can be estimated by detecting the temperature of the outer wall of the heating body 140. For example, the upper temperature limit of the stop signal sent by the first temperature sensor 171 or the second temperature sensor 172 is smaller than the upper temperature limit of the stop signal sent by the temperature switch 173.

Specifically, the upper temperature limit of the shutdown signal sent by the first temperature sensor 171 and the second temperature sensor 172 is set to T1 (e.g., equal to 180 ℃), the upper temperature limit of the shutdown signal sent by the temperature switch 173 is set to T2 (e.g., equal to 300 ℃), and when the temperature of the outer wall of the heating body 140 rises to T1, if the temperature corresponding to T1 is detected by the first temperature sensor 171 or the second temperature sensor 172 at this time, a shutdown signal is generated and sent to the main control board 110 to control the heating body 140 to stop heating water and continue to generate steam. However, during actual operation, when the temperature of the outer wall of the heating body 140 rises too fast and the shutdown signal is generated without detecting the temperature value corresponding to T1, the temperature switch 173 is also used as a second layer protection. That is, when the temperature of the outer wall of the heating body rapidly exceeds T1 and reaches T2, the temperature switch 173 will generate a shutdown signal in time to stop the heating body 140 from boiling water to prevent dry heating, so as to effectively protect the heating body 140.

In one embodiment, as shown in fig. 1 and 5, the steam car washer further includes:

an emergency stop switch 181 disposed on the cart body 100, wherein the emergency stop switch 180 is connected to the main control board 110;

a dry-wet switching knob 182 disposed on the cart body 100, wherein the dry-wet switching knob 182 is connected to the main control board 110.

In this embodiment, the scram switch 181 is disposed on the cart body 100, so that when a user needs to stop the cart quickly to remove a fault or stop the cart for other reasons, the user only needs to press the scram switch 181 to generate a stop signal, so that the operation of the working components such as the heating body 140 in the steam car washer stops.

The cart body 100 is provided with a dry-wet switching knob 182, which can send a signal for adjusting the rotation speed of the water pump to the filtered water pump assembly 160 from the main control panel 110, so as to control the amount of water pumped by the filtered water pump assembly 160 to the heating body 140 for heating, thereby controlling the humidity in the high-temperature steam. For example, when the amount of water pumped by the filtered water pump assembly 160 to the heating body 140 decreases, the high temperature steam is dry; when the amount of water pumped by the filtered water pump assembly 160 to the heating body 140 increases per unit time, the high temperature steam is wet.

In one embodiment, as shown in fig. 4 to 6, the steam car washer further includes a ball valve 133 connected to the first three-way valve 131 for draining the water tank 130.

In this embodiment, a ball valve 133 is connected to the second outlet 131c of the first three-way valve, and when the water tank 130 needs to be quickly emptied, the ball valve is directly opened to empty the water in the water tank 130.

The utility model provides a steam type car washing device, which comprises a cart body; a cart body; the main control board is arranged in the cart body; the battery module is arranged in the cart body and is connected with the main control board; the water tank is arranged in the cart body and is connected with the main control board; the heating body is arranged in the cart body and is connected with the water tank through a filtering water pump assembly, the heating body is also connected with the battery module, and the filtering water pump assembly is also connected with the main control panel; the display screen is arranged on the cart body and connected with the main control board; the heating body is also connected with the water tank through a pressure limiting protection assembly, and the pressure limiting protection assembly is also connected with the main control board; the temperature limiting protection component is arranged on the outer wall of the heating body and is connected with the main control board; and the steam spray gun is connected with the heating body through a connecting pipeline. The utility model discloses a steam type car washer promotes when using and can facilitate the use to treating to wash car department, avoids the pollution to the environment because of adopting the more environment-friendly safer power supply mode of rechargeable battery module moreover.

It should be noted that, for simplicity of description, the above-mentioned embodiments of the method are described as a series of combinations of actions, but those skilled in the art should understand that the present invention is not limited by the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A steam car wash, comprising:

a cart body;

the main control board is arranged in the cart body;

2. The steam car wash of claim 1, further comprising:

the dust collector is connected with the main control board;

the dust collector supporting plate is arranged on the outer wall of the cart body and can be rotatably stored;

the storage box is arranged on the outer wall of the cart body;

and the suspension rod is arranged on the outer wall of the cart body.

3. The steam type car washing device according to claim 1, wherein the battery module comprises a first battery, a second battery and a third battery, the first battery is connected with the heating body through a first controller, the second battery is connected with the heating body through a second controller, the third battery is connected with the heating body through a third controller, the third battery is further connected with the main control board through a first transformer, and the third battery is further connected with the filtered water pump assembly through a fourth controller and a second transformer in sequence.

4. The steam car wash of claim 3, wherein the water tank is connected to the filtered water pump assembly sequentially through a first three-way valve and a second three-way valve.

5. The steam car wash of claim 4, wherein the filtered water pump assembly comprises a filter, a flow meter, a first water pump, and a first one-way valve;

the inlet end of the filter is connected with the second three-way valve, and the outlet end of the filter is connected with the inlet end of the flowmeter;

the outlet end of the flow meter is connected with one end of the first water pump;

the other end of the first water pump is connected with the inlet end of the first one-way valve, and the first water pump is also connected with the fourth controller through a second transformer; the first water pump is a high-pressure plunger pump, and the fourth controller is connected with the main control board;

the outlet end of the first one-way valve is connected with the heating body.

6. A steam car wash according to claim 1, wherein the pressure limiting protection assembly comprises a pressure switch and a safety valve arranged on the connecting line; the pressure switch is connected with the main control board, and the safety valve is further provided with a pressure relief exhaust pipe.

7. A steam car wash according to claim 1, wherein the temperature limited protection assembly comprises a first temperature sensor, a second temperature sensor and a temperature switch; the first temperature sensor, the second temperature sensor and the temperature switch are all connected with the main control board.

8. The steam car wash of claim 1, further comprising:

the emergency stop switch is arranged on the cart body and is connected with the main control board;

the dry-wet switching knob is arranged on the cart body and is connected with the main control board.

9. The steam type car washing device according to claim 1, wherein an insulating layer is provided on an outer wall of the heating body; the insulating layer is made of aluminum silicate fibers.

10. A steam car wash according to claim 4, further comprising a ball valve connected to the first three-way valve for emptying the water tank.