CN220535644U - Waste exhaust device and rail-crossing air conditioning unit - Google Patents

Abstract

The application relates to the technical field of air conditioners, in particular to a waste discharging device and a rail-crossing air conditioner unit. The waste discharging device comprises a shell, a baffle plate and a valve plate. The casing is equipped with the opening that holds the chamber and communicate and hold the chamber, and the baffle is located and is held the intracavity and will hold the chamber and separate into air inlet chamber and air outlet chamber to and, the baffle separates the opening into the air inlet of intercommunication air inlet chamber and the gas outlet of intercommunication air outlet chamber, and the air inlet chamber passes through the exhaust duct of air inlet intercommunication vehicle, and the air outlet chamber passes through the air intake of gas outlet intercommunication outdoor heat exchanger. The baffle is equipped with the air vent, and the one end activity of valve block articulates in baffle or casing, and the air vent can pass through valve block intercommunication air inlet chamber and air outlet chamber. The application provides a useless device of arranging and rail cross air conditioning unit has solved the problem that current useless device of arranging exhaust gas utilization ratio is low.

Description

Waste exhaust device and rail-crossing air conditioning unit

Technical Field

The application relates to the technical field of air conditioners, in particular to a waste discharging device and a rail-crossing air conditioner unit.

Background

Along with the rapid development of rail vehicles, the rail vehicles become common vehicles for people to travel, and the requirements of people on the air quality and the comfort level in the rail vehicles are also higher and higher. The waste exhaust device can discharge the waste gas in the car to the external environment, and is a key for guaranteeing the air quality in the railway vehicle.

At present, the exhaust gas discharged from the exhaust device is usually directly discharged to the external environment. Taking a refrigeration working condition as an example, when the air conditioning unit is used for refrigeration, the temperature of air in the vehicle is lower, and when the waste gas is directly discharged into the external environment, the cold carried by the waste gas is not well utilized.

Disclosure of Invention

Based on this, it is necessary to provide a waste discharging device and a rail-mounted air conditioner unit, so as to solve the problem of low utilization rate of waste gas discharged by the existing waste discharging device.

The application provides a waste discharge device, which comprises a shell, a baffle and a valve plate, wherein the shell is provided with a containing cavity and an opening communicated with the containing cavity, the baffle is arranged in the containing cavity and divides the containing cavity into an air inlet cavity and an air outlet cavity, the opening is divided into an air inlet communicated with the air inlet cavity and an air outlet communicated with the air outlet cavity by the baffle, the air inlet cavity is communicated with a waste exhaust channel of a vehicle through the air inlet, and the air outlet cavity is communicated with an air inlet of an outdoor heat exchanger through the air outlet; the baffle is equipped with the air vent, the one end activity of valve block articulated in the baffle or the casing, just the air vent can pass through the valve block intercommunication the inlet chamber with the chamber of giving vent to anger.

In one embodiment, when the air pressure of the air inlet cavity is greater than the air pressure of the air outlet cavity, and the air pressure difference between the air inlet cavity and the air outlet cavity is smaller than or equal to a preset pressure value, the valve plate sealing cover is arranged at the air vent, and the air vent is not communicated with the air inlet cavity and the air outlet cavity; when the air pressure of the air inlet cavity is larger than the air pressure of the air outlet cavity, and the air pressure difference between the air inlet cavity and the air outlet cavity is larger than the preset pressure value, the valve plate can move towards the direction away from the air vent, and the air vent is communicated with the air inlet cavity and the air outlet cavity.

In one embodiment, the housing includes a top plate, the partition plate is inclined or vertically disposed with respect to the top plate, and when the partition plate is inclined with respect to the top plate, an inclined surface of a side of the partition plate, which is close to the air outlet cavity, faces the top plate, and the valve plate is disposed on a side of the partition plate, which is close to the air outlet cavity.

In one embodiment, the partition forms an included angle A with the top plate, which satisfies 45 DEG A < 90 deg.

In one embodiment, the housing further comprises a first side plate and a second side plate which are arranged at intervals with the partition plate, and the vertical distance from one end of the second side plate away from the top plate to the top plate is smaller than the vertical distance from one end of the partition plate away from the top plate to the top plate.

In one embodiment, the included angle B formed by the second side plate and the top plate satisfies 0 DEG & lt B & ltoreq 60 deg.

In one embodiment, when the valve plate moves in a direction away from the vent, one end of the valve plate away from the hinge position of the valve plate can be abutted against the top plate; the roof is from connecting the one end of baffle to connect the length M of the one end of second curb plate, the valve block is from connecting the one end of articulated department to keeping away from the length N of the one end of articulated department, satisfy, M > N.

In one embodiment, when the valve plate moves in a direction away from the vent, one end of the valve plate away from the hinge position of the valve plate can be abutted against the second side plate.

In one embodiment, the waste discharging device further comprises a waste discharging grille, the waste discharging grille is arranged at the air outlet, the waste discharging grille comprises a main body part, the main body part is provided with a waste discharging port, the waste discharging port is communicated with the air inlet of the air outlet cavity and the air inlet of the outdoor heat exchanger, and a plurality of barrier ribs which are arranged in a crossing manner are connected in the waste discharging port.

In one embodiment, the included angle C formed between the main body part and the top plate is more than 0 DEG and less than or equal to 30 deg.

In one embodiment, the number of the air vents is plural along a preset length direction, and the plural air vents are arranged on the partition board at intervals along the preset length direction; the valve plate comprises a plurality of fragments, the fragments and the air vents are arranged in one-to-one correspondence, and each air vent can be covered with the fragments; the number of the waste discharge ports is multiple, the waste discharge ports are arranged corresponding to the air vents, and the total flow area of the waste discharge ports is larger than or equal to the total flow area of the air vents.

The application also provides a rail-exchange air conditioning unit, which comprises a machine body, an outdoor heat exchanger and the waste discharging device in any one of the embodiments, wherein the outdoor heat exchanger and the waste discharging device are arranged in the machine body; the machine body is provided with a total air inlet and a total air outlet, the outdoor heat exchanger comprises a heat exchange fan and a heat exchange tube group, outdoor gas enters the machine body through the total air inlet, waste exhaust gas enters the machine body through an outlet of the waste exhaust device, and after being mixed with the outdoor gas, the waste exhaust gas sequentially passes through the heat exchange tube group, the heat exchange fan and the total air outlet to be discharged out of the machine body.

In one embodiment, the heat exchange tube group and the machine body are surrounded to form a first accommodating part communicated with the total air inlet and a second accommodating part communicated with the total air outlet, the waste discharge device is arranged on the first accommodating part, and the heat exchange fan is arranged on the second accommodating part; the outlet of the waste discharge device is arranged towards the direction close to the heat exchange tube group; or the outlet of the waste discharging device is arranged towards the direction close to the total air inlet.

In one embodiment, the vertical distance H between the waste discharging device and the heat exchange tube group meets the requirement that H is more than or equal to 50mm.

In one embodiment, the length P of the waste discharging device along the preset height direction, and the depth Q of the first accommodating portion along the preset height direction satisfies that P is less than or equal to Q/2.

Compared with the prior art, the exhaust device and the rail exchange air conditioning unit provided by the application are characterized in that the exhaust gas exhausted by the exhaust device can participate in heat exchange of the outdoor heat exchanger by communicating the exhaust gas outlet of the exhaust device with the air inlet of the outdoor heat exchanger, so that the cooling or heating requirement of the outdoor heat exchanger is met, the utilization rate of the exhaust gas is greatly improved, and the energy efficiency of the rail exchange air conditioning unit is remarkably improved.

Drawings

In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings that are required to be used in the description of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic view of a part of a rail-mounted air conditioning unit according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of a portion of the construction of an embodiment of a rail air conditioning unit provided herein;

FIG. 3 is an enlarged view of FIG. 2 at D;

FIG. 4 is a schematic diagram of a waste discharging device according to an embodiment of the present disclosure;

FIG. 5 is a second schematic structural diagram of a waste discharging device according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of a waste discharging device in a closed state according to an embodiment of the present disclosure;

FIG. 7 is a side view of a waste discharge device in a closed condition according to one embodiment provided herein;

FIG. 8 is a schematic view of a waste discharging device in an open state according to an embodiment of the present disclosure;

FIG. 9 is a side view of an exhaust device in an open state according to one embodiment provided herein;

fig. 10 is a schematic view of a part of the structure of a waste grid according to an embodiment of the present application.

The symbols in the drawings are as follows:

100. a rail-crossing air conditioning unit; 10. a waste discharging device; 11. a housing; 111. a receiving chamber; 1111. an air inlet cavity; 1112. an air outlet cavity; 112. an opening; 1121. an air inlet; 1122. an air outlet; 113. a top plate; 1131. a first support plate; 1132. a second support plate; 114. a side panel assembly; 1141. a first side plate; 1142. a second side plate; 1143. a first end plate; 1144. a second end plate; 12. a partition plate; 121. a vent; 122. a flanging structure; 13. a valve plate; 131. slicing; 14. a waste discharge grille; 141. a first connection portion; 142. a second connecting portion; 143. a main body portion; 1431. waste discharge port; 144. blocking ribs; 15. an outlet; 16. a first fixing plate; 17. a second fixing plate; 18. a third fixing plate; 20. a body; 21. a total air inlet; 22. a total air outlet; 23. a first housing part; 24. a second accommodating portion; 25. a water outlet; 30. an outdoor heat exchanger; 31. a heat exchange fan; 32. a heat exchange tube group; 321. and a heat exchange tube row.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used in the description of the present application for purposes of illustration only and do not represent the only embodiment.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be a direct contact of the first feature with the second feature, or an indirect contact of the first feature with the second feature via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

Unless defined otherwise, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The term "and/or" as used in the specification of this application includes any and all combinations of one or more of the associated listed items.

Along with the rapid development of rail vehicles, the rail vehicles become common vehicles for people to travel, and the requirements of people on the air quality and the comfort level in the rail vehicles are also higher and higher. The waste exhaust device can discharge the waste gas in the car to the external environment, and is a key for guaranteeing the air quality in the railway vehicle.

At present, the exhaust gas discharged from the exhaust device is usually directly discharged to the external environment. Taking a refrigeration working condition as an example, when the air conditioning unit is used for refrigeration, the temperature of air in the vehicle is lower, and when the waste gas is directly discharged into the external environment, the cold carried by the waste gas is not well utilized.

Referring to fig. 1-9, in order to solve the problem of low utilization rate of exhaust gas discharged by the existing exhaust device, the application provides an exhaust device 10 and a rail-mounted air conditioning unit 100, wherein the exhaust device 10 includes a housing 11, a partition 12 and a valve plate 13.

The housing 11 is provided with a housing chamber 111 and an opening 112 communicating with the housing chamber 111, the partition 12 is provided in the housing chamber 111 and divides the housing chamber 111 into an air inlet chamber 1111 and an air outlet chamber 1112, and the partition 12 divides the opening 112 into an air inlet 1121 communicating with the air inlet chamber 1111 and an air outlet 1122 communicating with the air outlet chamber 1112, the air inlet chamber 1111 communicates with an exhaust duct (may be direct communication or indirect communication, the same applies hereinafter) of the vehicle through the air inlet 1121, and the air outlet chamber 1112 communicates with an air inlet of the outdoor heat exchanger 30 through the air outlet 1122. The partition plate 12 is provided with a vent 121, one end of the valve plate 13 is movably hinged to the partition plate 12 or the shell 11, and the vent 121 can be communicated with the air inlet cavity 1111 and the air outlet cavity 1112 through the valve plate 13.

When the air pressure of the air inlet chamber 1111 is greater than the air pressure of the air outlet chamber 1112, and the air pressure difference between the air inlet chamber 1111 and the air outlet chamber 1112 is less than or equal to the preset pressure value, the valve plate 13 is sealed and cover the air vent 121 to block the air inlet chamber 1111 and the air outlet chamber 1112, that is, the air vent 121 is not communicated with the air inlet chamber 1111 and the air outlet chamber 1112.

When the air pressure of the air inlet chamber 1111 is greater than the air pressure of the air outlet chamber 1112 and the air pressure difference between the air inlet chamber 1111 and the air outlet chamber 1112 is greater than the preset pressure value, the valve sheet 13 can move in a direction away from the air vent 121 to open the air vent 121, that is, the air vent 121 communicates with the air inlet chamber 1111 and the air outlet chamber 1112.

In order to ensure proper balance of air pressure, the air pressure in the vehicle is usually positive, i.e., greater than the outdoor constant atmospheric pressure, and the air pressure in the vehicle is usually controlled to be 0 to 50Pa. The air pressure of the air inlet chamber 1111 is substantially the same as the air pressure of the vehicle interior, and the air pressure of the air outlet chamber 1112 is less than or equal to the outdoor constant atmospheric pressure.

When the air pressure of the air inlet chamber 1111 is greater than the air pressure of the air outlet chamber 1112, and the air pressure difference between the air inlet chamber 1111 and the air outlet chamber 1112 is less than or equal to the preset pressure value. At this time, the pressure of the gas in the vehicle is relatively small, so the pressure difference force cannot effectively push the valve plate 13, the valve plate 13 can cover the air vent 121, the gas in the vehicle is prevented from flowing out through the air vent 121, and a relatively stable positive pressure state in the vehicle is ensured to be maintained, so that the comfort level of passengers is improved.

When the air pressure of the air inlet chamber 1111 is greater than the air pressure of the air outlet chamber 1112, and the air pressure difference between the air inlet chamber 1111 and the air outlet chamber 1112 is greater than the preset pressure value. At this time, the pressure of the gas in the vehicle is high, the pressure difference force can effectively push the valve plate 13, the valve plate 13 can be opened to open the air vent 121 on the partition 12, and the exhaust gas in the air inlet chamber 1111 can flow to the air outlet chamber 1112 through the air vent 121 and finally be discharged through the outlet 15 of the exhaust device 10. When the gas in the vehicle is discharged by a certain amount, the air pressure difference between the air inlet cavity 1111 and the air outlet cavity 1112 is reduced until the air pressure difference is smaller than the preset pressure value, and the valve plate 13 is covered on the air vent 121 again, so as to avoid the gas in the vehicle from being discharged continuously.

Further, taking a refrigerating condition as an example, the indoor heat exchanger of the rail-mounted air conditioning unit 100 is used for refrigerating, at this time, the indoor heat exchanger is an evaporator, and the low-temperature refrigerant medium in the evaporator exchanges heat with the air in the vehicle, so that the temperature in the vehicle is lower, and therefore, the air in the vehicle has abundant cold energy. Because the exhaust gas in the vehicle discharged by the exhaust gas discharging device 10 has abundant cold energy, and the exhaust gas discharging device 10 is communicated with the air inlet of the outdoor heat exchanger 30 (serving as a condenser) through the air outlet 1122, the low-temperature exhaust gas discharged by the exhaust gas discharging device 10 can participate in the heat exchange of the high-temperature refrigerant medium in the outdoor heat exchanger 30, thereby being beneficial to improving the condensing effect of the high-temperature refrigerant medium in the outdoor heat exchanger 30 and improving the supercooling degree. That is, the exhaust emission device 10 provided in the present application achieves effective utilization of exhaust gas in a vehicle, and greatly reduces energy consumption of the entire rail transit air conditioning unit 100.

Similarly, in the heating working condition, the indoor heat exchanger is used as a condenser, and the gas in the vehicle has higher heat. The outdoor heat exchanger 30 is used as an evaporator, can absorb heat in exhaust gas discharged by the exhaust device 10, and is beneficial to reducing frosting, so that the normal operation of the outdoor heat exchanger 30 is ensured, and the energy efficiency ratio of the rail-mounted air conditioning unit 100 is improved.

In summary, the exhaust gas discharged from the exhaust device 10 can participate in the heat exchange of the outdoor heat exchanger 30, so that the utilization rate of the exhaust gas is greatly improved, and the cooling or heating requirement of the outdoor heat exchanger 30 is satisfied, thereby significantly improving the energy efficiency of the rail-mounted air conditioning unit 100.

The present application specifically describes a refrigeration condition as an example.

Example 1

In this embodiment, as shown in fig. 4-9, the housing 11 includes a top plate 113 and a side plate assembly 114. The top plate 113 is connected to one end of the side plate assembly 114 in a sealing manner, the top plate 113 and the side plate assembly 114 enclose a receiving chamber 111, and the opening 112 is disposed at one end of the receiving chamber 111 away from the top plate 113.

When the exhaust device 10 is installed in the rail air conditioner unit 100, the top plate 113 of the housing 11 is disposed horizontally or approximately horizontally.

Further, the partition 12 is disposed obliquely or vertically with respect to the top plate 113, and when the partition 12 is disposed obliquely with respect to the top plate 113, the inclined surface of the partition 12 near the air outlet chamber 1112 is disposed toward the top plate 113, and the valve sheet 13 is disposed on the side of the partition 12 near the air outlet chamber 1112. When the air pressure difference between the air inlet chamber 1111 and the air outlet chamber 1112 is smaller than or equal to the preset pressure value, the valve plate 13 can be sealed and cover the air vent 121 under the action of its own gravity. When the air pressure difference between the air inlet chamber 1111 and the air outlet chamber 1112 is greater than the preset pressure value, the valve plate 13 can open the air vent 121 under the action of air pressure.

That is, in the present embodiment, the valve sheet 13 controls the opening angle of the valve sheet 13 under the action of gravity and pressure difference, so as to automatically open and close the air vent 121 by the valve sheet 13, so as to regulate and control the exhaust amount of the exhaust device 10. The condition that the air pressure in the vehicle is large in the running process of the railway vehicle can be avoided, the exhaust effect of the waste exhaust device 10 is improved, the air pressure inside and outside the vehicle can be ensured to be in a relatively stable state, and the comfort level of passengers is improved. And the whole structure is simple, the processing is easy, and the processing cost can be reduced. Of course, as other embodiments, the valve plate 13 may be controlled electrically, such as when a preset condition is reached, in addition to mechanical control, to control the opening and closing of the vent 121 by the valve plate 13.

Further, in one embodiment, the partition 12 forms an angle A with the top plate 113, satisfying 45A 90. Thus, the rotation difficulty of the valve plate 13 is reduced, and the natural opening and closing of the vent 121 is realized.

When A is smaller than 45 degrees, the included angle between the partition plate 12 and the top plate 113 is too small, and the valve plate 13 is larger under the action of gravity, so that the valve plate 13 is not easy to open. When a > 90 °, that is, the partition 12 is inclined toward the direction approaching the intake chamber 1111, the valve sheet 13 cannot naturally close the air vent 121 by gravity. The angle a formed by the partition 12 and the top plate 113 may be 50 °, 60 °, 70 °, 80 °, or the like, which is not illustrated herein.

When the rail vehicle is running, the rail air conditioning unit 100 is usually in a running state, and negative pressure is formed at the heat exchange fan 31 of the outdoor heat exchanger 30, and the negative pressure has a certain attraction to the exhaust gas discharged by the exhaust device 10, that is, the pressure difference between the air inlet cavity 1111 and the air outlet cavity 1112 is affected, so that a certain influence is exerted on the movement of the valve plate 13. Therefore, the influence of the negative pressure of the heat exchange fan 31 on the valve plate 13 needs to be considered in design, so that the valve plate 13 cannot be closed due to the negative pressure generated during the operation of the heat exchange fan 31 is prevented.

When the pressure difference between the air inlet chamber 1111 and the air outlet chamber 1112 is smaller, the minimum pressure difference that the valve plate 13 can be opened at this time, that is, the preset pressure value should be greater than or equal to the negative pressure value generated by the heat exchange fan 31 at the air outlet chamber 1112, and meanwhile, the preset pressure value is ensured to be smaller than the maximum air pressure value in the vehicle. For example, when the preset pressure value is 40Pa (the gravity of the valve plate 13 can be set according to the preset pressure value), the negative pressure value at the air outlet cavity 1112 is 20Pa, when the air pressure value in the vehicle is greater than 20Pa, the valve plate 13 will be opened, and when the air pressure value in the vehicle is lower than 20Pa, the valve plate 13 will be closed.

When the pressure difference between the air inlet chamber 1111 and the air outlet chamber 1112 is large, for example, when the preset pressure value is 40Pa and the negative pressure value at the air outlet chamber 1112 is greater than 40Pa, the positive pressure in the rail transit vehicle can be ensured by reducing the maximum opening of the valve plate 13, that is, reducing the exhaust amount of the exhaust gas in unit time, so as to ensure the comfort of the passengers.

In one embodiment, as shown in FIG. 4, the side panel assembly 114 includes a first side panel 1141 and a second side panel 1142 disposed on opposite sides of the bulkhead 12 and spaced apart from the bulkhead 12, and the side panel assembly 114 further includes a first end panel 1143 and a second end panel 1144 connected to opposite ends of the bulkhead 12. Wherein the partition 12, the first side plate 1141, the partial top plate 113, the partial first end plate 1143, and the partial second end plate 1144 enclose an air inlet chamber 1111, and the partition 12, the second side plate 1142, the partial top plate 113, the partial first end plate 1143, and the partial second end plate 1144 enclose an air outlet chamber 1112.

Thus, the side plate assembly 114 has a simple structure, and the machining efficiency of the side plate assembly 114 can be improved.

The portion of the top plate 113 located within the partition 12 and the first side plate 1141 is defined as a first support plate 1131, and the portion of the top plate 113 located within the partition 12 and the second side plate 1142 is defined as a second support plate 1132.

For convenience of description, the direction from the first end plate 1143 to the second end plate 1144 is defined as a predetermined length direction, the direction from the opening 112 to the bottom wall of the accommodating cavity 111 is defined as a predetermined height direction, the direction from the first side plate 1141 to the second side plate 1142 is defined as a predetermined width direction, and the predetermined length direction, the predetermined height direction and the predetermined width direction are perpendicular to each other.

In an embodiment, the first side plate 1141 and the first support plate 1131 are integrally bent and formed by metal plates, the second side plate 1142, the second support plate 1132 and the partition plate 12 are integrally bent and formed by metal plates, and the connection part of the second support plate 1132 and the partition plate 12 is integrally connected with the first support plate 1131 by welding or riveting.

In another embodiment, the first side plate 1141, the first support plate 1131 and the partition plate 12 are integrally bent and formed by metal plates, the second side plate 1142 and the second support plate 1132 are integrally bent and formed by metal plates, and the connection portion between the first support plate 1131 and the partition plate 12 is integrally connected with the second support plate 1132 by welding or riveting.

In yet another embodiment, the top plate 113 is an integrally formed structure, and the first side plate 1141, the top plate 113 and the second side plate 1142 are integrally formed by bending metal plates, and the top plate 113 is integrally connected to the partition 12 by welding or riveting.

In this way, the molding modes of the housing 11 and the partition plate 12 are various, and appropriate schemes can be selected for processing and assembling according to actual conditions, so that the assembling efficiency of the entire structure of the waste discharging device 10 can be improved.

In an embodiment, the materials of the housing 11, the partition 12 and the valve plate 13 are any one of aluminum alloy or stainless steel. In this way, the material cost of the waste discharging device 10 can be reduced.

Still further, in one embodiment, the housing 11, the partition 12 and the valve sheet 13 are provided with an anti-condensation coating or paint layer. In this way, the service life of the exhaust emission device 10 can be improved.

In one embodiment, the waste discharge device 10 further includes a first fixed plate 16, a second fixed plate 17, and a third fixed plate 18. The first fixing plate 16 is connected to an end of the first side plate 1141 remote from the top plate 113, the second fixing plate 17 is connected to an end of the first end plate 1143 remote from the top plate 113, and the third fixing plate 18 is connected to an end of the second end plate 1144 remote from the top plate 113, so that the exhaust gas unit 10 can be connected to the rail air conditioner 100 through the first fixing plate 16, the second fixing plate and the third fixing plate 18.

In this way, the waste discharging device 10 can be mounted and fixed on the rail transit air conditioning unit 100, and the mounting firmness of the waste discharging device 10 can be improved.

Specifically, the first, second and third fixing plates 16, 17 and 18 may be mounted to the rail-mounted air conditioner unit 100 by fasteners such as bolts, thereby facilitating the installation and removal of the waste discharging device 10 and improving the convenience of subsequent maintenance.

Further, in an embodiment, the first side plate 1141 and the first fixing plate 16 are integrally formed, the first end plate 1143 and the second fixing plate 17 are integrally formed, and the second end plate 1144 and the third fixing plate 18 are integrally formed. In this way, it is advantageous to improve the strength of the connection between the first side plate 1141 and the first fixed plate 16, the first end plate 1143 and the second fixed plate 17, and the second end plate 1144 and the third fixed plate 18.

In one embodiment, the vertical distance from the end of the second side panel 1142 remote from the top panel 113 to the top panel 113 is smaller than the vertical distance from the end of the partition 12 remote from the top panel 113 to the top panel 113.

That is, when the exhaust device 10 is mounted on the rail-mounted air conditioner unit 100, a certain distance exists between the second side plate 1142 and the mounting surface of the exhaust plate device on the rail-mounted air conditioner unit 100, and an air outlet slot structure is formed by sandwiching the air outlet slot, and the air outlet slot is defined as the outlet 15 of the exhaust device 10. The outlet 15 of the exhaust stack 10 communicates with the outlet 1122 of the outlet chamber 1112 to facilitate exhaust of exhaust gases from the vehicle interior through the outlet 15 of the exhaust stack 10.

Since the heat exchange fan 31 will have a certain influence on the pressure of the air outlet cavity 1112, the outlet 15 of the waste discharging device 10 should not be too large, i.e. the vertical distance between the end of the second side plate 1142 away from the top plate 113 and the vertical distance between the end of the partition 12 away from the top plate 113 and the top plate 113 need to be controlled.

Specifically, an included angle B is formed between the second side plate 1142 and the top plate 113, and the size of the outlet 15 of the waste discharging device 10 can be controlled by setting the included angle a and the included angle B, so as to avoid the excessive influence of the negative pressure generated by the heat exchange fan 31 on the valve plate 13. In addition, bad factors such as rainwater and sundries are prevented from entering the waste discharging device 10 through the outlet 15 of the waste discharging device 10 and entering the vehicle through the waste discharging device 10, so that the reliability of the rail transit air conditioning unit 100 in the whole operation is improved.

Further, in one embodiment, the included angle B satisfies 0 DEG < B.ltoreq.60 deg. Because the partition plate 12 is obliquely arranged relative to the top plate 113, by controlling the angle between the second side plate 1142 and the top plate 113, the volume of the air outlet cavity 1112 is guaranteed, and the waste exhaust gas entering the air outlet cavity 1112 from the air vent 121 can be discharged from the outlet 15 of the waste exhaust device 10 through the air outlet 1122 more smoothly, so that the circulation efficiency of the waste exhaust gas is greatly improved.

In one embodiment, the cross-sectional area of the valve sheet 13 is greater than the cross-sectional area of the vent 121. Thus, when the valve plate 13 is in the closed state, the valve plate 13 can be completely blocked in the air vent 121, so that the gas in the vehicle is prevented from leaking, and the reliability of the waste discharging device 10 is improved.

Further, in an embodiment, the number of the air vents 121 is plural along the preset length direction, and the air vents 121 are disposed on the partition 12 at intervals along the preset length direction. The valve plate 13 includes a plurality of segments 131, the segments 131 are disposed in one-to-one correspondence with the air vents 121, and each air vent 121 can be covered with a segment 131.

Through setting up a plurality of air vents 121, and each air vent 121 all corresponds to be provided with the burst 131, can reduce the area of single burst 131 to a certain extent, compare in integral valve block 13, can alleviate the weight of single burst 131 to the rotation of every burst 131 of being convenient for realizes opening of corresponding air vent 121.

Specifically, each of the segments 131 is connected to the partition 12 or the top plate 113 in a hinged manner, and for this purpose, a certain width should be reserved at a position of the partition 12 above the air vent 121 to fixedly connect with a hinge or a bracket, etc. In addition, along the preset length direction, a certain width can be reserved between the adjacent air vents 121 according to the structural strength of the partition plate 12.

Further, the number of the air vents 121 may be determined according to the length of the exhaust device 10 in the preset length direction, for example, the number of the air vents 121 may be set to two, four, six, etc., as long as the opening and closing of the valve sheet 13 can be facilitated.

In an embodiment, when the valve plate 13 moves in a direction away from the vent 121, an end of the valve plate 13 away from the hinge can abut against the top plate 113. That is, at this time, the rotation of the valve plate 13 is not blocked by the second side plate 1142, and the valve plate 13 can reach its maximum opening, thereby improving the circulation performance of the exhaust gas.

However, at this time, the flow of the exhaust gas is affected by the second side plate 1142, so the second side plate 1142 should be further bent toward the partition 12 to perform a certain flow guiding function on the exhaust gas, and guide the exhaust gas to flow to the air outlet 1122 of the air outlet cavity 1112, and finally be discharged through the outlet 15 of the exhaust device 10. And, the bending of the second side plate 1142 correspondingly reduces the area of the outlet 15 of the waste discharging device 10, thereby reducing the influence of the heat exchange fan 31 on the rotation of the valve plate 13.

Further, in one embodiment, as shown in fig. 9, the top plate 113 has a length M from one end connected to the partition 12 to one end connected to the second side plate 1142, that is, the second support plate 1132 has a length M. The length N of the valve plate 13 from one end of the connecting hinge to one end far away from the hinge satisfies M > N.

That is, by setting the length M of the second support plate 1132 along the preset width direction to be greater than the length of the valve plate 13, the valve plate 13 can be prevented from contacting the second side plate 1142, and the circulation performance of the exhaust gas is further improved. In addition, the processing cost of the valve sheet 13 is reduced.

In an embodiment, as shown in fig. 8 and 9, when the valve plate 13 moves in a direction away from the air vent 121, an end of the valve plate 13 away from the hinge point can abut against the second side plate 1142.

In this way, the second side plate 1142 can limit the opening of the valve plate 13, thereby meeting the requirement of stabilizing the pressure difference between the inside and the outside of the vehicle. In addition, at this time, the flow of the exhaust gas is affected by the valve plate 13, and the valve plate 13 plays a certain role in guiding the exhaust gas, so as to guide the exhaust gas to the air outlet 1122 of the air outlet cavity 1112. At this time, the maximum opening of the valve plate 13 may be achieved by adjusting the angle of the included angle B and/or the included angle a, that is, along with the adjustment of the angle, the maximum opening of the valve plate 13 is correspondingly adjusted.

During processing, the length N of the valve plate 13 and the inclination angles (i.e., the included angle B and the included angle a) of the second side plate 1142 and the partition 12 may be determined first, and at this time, the opening of the valve plate 13 is also affected by the length M of the second support plate 1132 along the preset width direction, so that the opening of the valve plate 13 may be controlled by increasing or decreasing the length M of the second support plate 1132 along the preset width direction.

Further, in an embodiment, a reinforcing structure (not shown) is disposed at the abutting portion of the second side plate 1142 and the valve plate 13, and when the valve plate 13 moves in a direction away from the air vent 121, one end of the valve plate 13 away from the partition 12 can abut against the reinforcing structure.

The reinforcing structure can be a reinforcing rib to improve the structural strength of the joint of the second side plate 1142 and the valve plate 13, and avoid the deformation of the second side plate 1142, thereby greatly increasing the service life of the waste discharging device 10.

Without being limited thereto, a reinforcing structure may be provided at other places on the housing 11 or on the partition 12, thereby securing structural strength of the housing 11 and further increasing the service life of the waste discharging device 10.

In one embodiment, as shown in fig. 5-10, the exhaust apparatus 10 further includes an exhaust grille 14, where the exhaust grille 14 is disposed at the air outlet 1122, and the exhaust grille 14 is respectively connected to the partition 12 and the second side plate 1142, so that the air outlet cavity 1112 communicates with the air inlet of the outdoor heat exchanger 30 or the outlet 15 of the exhaust apparatus 10 through the exhaust grille 14.

The exhaust grill 14 can block foreign matter from entering the exhaust device 10 through the outlet 15 of the exhaust device 10 and from entering the vehicle interior through the exhaust device 10, thereby improving the reliability of the exhaust device 10 in operation.

Further, in one embodiment, the exhaust grill 14 is provided with an exhaust port 1431 that communicates with the exhaust chamber 1112 and the intake of the outdoor heat exchanger 30. In this way, the exhaust grill 14 does not hinder the flow of exhaust gas.

Specifically, a plurality of blocking ribs 144 disposed in a crossing manner are connected in the waste discharge port 1431, so as to block foreign matters and the like.

In one embodiment, the number of the waste discharge ports 1431 is plural, the waste discharge ports 1431 are disposed corresponding to the air ports 121, and the total flow area of the waste discharge ports 1431 is greater than or equal to the total flow area of the air ports 121, so as to facilitate the flow of the waste exhaust gas.

However, without impeding the flow of the exhaust gas, the total flow area of the plurality of exhaust ports 1431 may also be smaller than the total flow area of the plurality of air vents 121, embodied as a decrease in the width of the exhaust ports 1431 in the preset width direction, thereby facilitating a decrease in the width of the entire exhaust device 10 in the preset width direction.

The flow area of the waste discharge port 1431 refers to the area of the space in the waste discharge port 1431 excluding the barrier ribs 144.

In one embodiment, the end of the partition 12 remote from the top plate 113 is provided with a flange structure 122, and the partition 12 is connected to the waste grid 14 by the flange structure 122. In this manner, the connection of the partition 12 and the exhaust grill 14 is facilitated.

Further, in one embodiment, as shown in fig. 10, the waste grid 14 includes a first connection part 141, a second connection part 142, and a main body part 143 connecting the first connection part 141 and the second connection part 142. The air outlet chamber 1112 communicates with the air inlet of the outdoor heat exchanger 30 through the main body portion 143, that is, the waste discharge port 1431 is provided on the main body portion 143. One end of the main body 143 is disposed at an angle with the first connecting portion 141 and is connected to the flanging structure 122 through the first connecting portion 141, and the other end is disposed at an angle with the second connecting portion 142 and is connected to the second side plate 1142 through the second connecting portion 142.

By providing the first connecting portion 141, the contact area between the waste gate 14 and the burring structure 122 of the partition plate 12 can be increased, and by providing the second connecting portion 142, the contact area between the waste gate 14 and the second side plate 1142 can be increased. In this manner, the exhaust grill 14 can be more securely mounted to the partition 12 and the second side plate 1142, thereby improving the connection stability of the exhaust device 10 as a whole.

Specifically, the first connecting portion 141 and the flange structure 122 may be fixedly connected by a fastener such as a bolt, so that the damage rate is reduced, and the mounting and dismounting of the waste discharge grille 14 are facilitated, thereby facilitating the subsequent cleaning or replacement of the waste discharge grille 14. The second connecting portion 142 may also be fixedly connected to the second side plate 1142 by a fastening member such as a bolt, so as to further enhance the connection strength, and ensure that the exhaust gas can be discharged only through the exhaust port 1431 of the exhaust grill 14.

Of course, in other embodiments, the second connecting portion 142 may be only attached to the second side plate 1142, so that the connection of the waste grid 14 is simpler, and the assembly efficiency of the waste grid 14 can be improved.

Further, the waste grid 14 is made of metal or plastic, preferably metal, and is integrally formed, so that the waste grid is convenient to directly connect through fasteners such as bolts, and the damage rate is further reduced.

In one embodiment, the included angle C formed between the main body portion 143 and the top plate 113 is 0 DEG < C.ltoreq.30 deg.

In this way, a certain space exists between the waste discharge port 1431 and the outlet 15 of the waste discharge device 10, and the waste gas can flow out easily. Further, it is possible to prevent the inflow of condensed water, rainwater, or the like due to an excessively large angle at the waste discharge grill 14, thereby preventing the inflow of moisture into the vehicle, or to prevent the flow of waste exhaust gas due to the shielding of foreign matter at the waste discharge port 1431.

To sum up, the waste exhaust device 10 provided by the application has a simple structure, fewer parts and small occupied space, can better realize the function of exhaust emission, and can fully utilize the cold energy in waste exhaust gas by the outdoor heat exchanger 30 through the air inlet of the outdoor heat exchanger 30, thereby improving the heat exchange efficiency of the outdoor heat exchanger 30 and greatly improving the energy efficiency ratio of the rail-exchange air conditioning unit 100.

Example two

The structure of the embodiment is basically the same as that of the embodiment, and the details of the same are not repeated, except that:

in the present embodiment, the waste discharging apparatus 10 further includes a pressure sensor (not shown), a controller (not shown), and a driving motor (not shown). The controller is respectively and electrically connected with the pressure sensor and the driving motor, and the output end of the driving motor is connected with the valve plate 13. When the pressure sensor detects that the air pressure difference between the air inlet cavity 1111 and the air outlet cavity 1112 is smaller than or equal to the preset pressure value, the controller can control the valve plate 13 to close the air vent 121 through the driving motor. When the pressure sensor detects that the air pressure difference between the air inlet cavity 1111 and the air outlet cavity 1112 is larger than the preset pressure value, the controller can control the valve plate 13 to open the air vent 121 through the driving motor.

The controller can receive the pressure signal measured by the pressure sensor, control the driving motor to close or open the valve plate 13 according to the pressure signal measured by the pressure sensor, and correspondingly adjust the rotation angle of the valve plate 13 so as to adjust the opening of the valve plate 13. Therefore, the valve plate 13 is not influenced by pressure difference or gravity, so that the influence of the heat exchange fan 31 on the valve plate 13 can be reduced, and the accurate control of exhaust emission is realized.

Specifically, the controller may be mounted to the end of the first or second end plate 1143, 1144 of the exhaust stack 10 remote from the receiving chamber 111 to improve overall integration performance.

The rail air conditioner assembly 100 is also typically provided with a fresh air valve for providing fresh air into the vehicle.

In other embodiments, the opening of the valve plate 13 can be controlled by comparing with the opening of the fresh air valve to adjust the waste air discharge amount, and realize multi-gear adjustment, so as to realize dynamic balance with the fresh air amount entering the vehicle.

To sum up, this application is through setting up opening and close of automatic and electronic mode control valve block 13, has satisfied different use needs, and installer can select suitable structure to install according to actual need.

The application also provides a rail-mounted air conditioning unit 100, and the rail-mounted air conditioning unit 100 comprises a machine body 20, an outdoor heat exchanger 30 and the waste heat discharging device 10 described in any one of the embodiments above, wherein the outdoor heat exchanger 30 and the waste heat discharging device 10 are installed in the machine body 20.

When the waste discharging apparatus 10 is mounted in the machine body 20, the longitudinal direction of the waste discharging apparatus 10 is the same as the longitudinal direction of the machine body 20, and is the predetermined longitudinal direction. The width direction of the waste discharging device 10 is the same as the width direction of the machine body 20, and is the preset width direction. The height direction of the waste discharging device 10 is the same as the height direction of the machine body 20, and is the preset height direction.

In one embodiment, as shown in fig. 1-3, the body 20 is provided with a total air inlet 21 and a total air outlet 22, and the outdoor heat exchanger 30 includes a heat exchange fan 31 and a heat exchange tube group 32. Outdoor gas enters the machine body 20 through the total air inlet 21, waste exhaust gas enters the machine body 20 through the outlet 15 of the waste exhaust device 10, and after being mixed with outdoor gas, the waste exhaust gas is discharged out of the machine body 20 through the heat exchange tube group 32, the heat exchange fan 31 and the total air outlet 22 in sequence.

In this way, the gas discharged from the exhaust gas discharge device 10 can be mixed with the gas in the external environment, and is discharged from the main air outlet 22 via the heat exchange fan 31 after heat exchange with the heat exchange tube group 32. In this way, the cold energy in the exhaust gas is fully utilized, so that the heat exchange efficiency of the heat exchange tube group 32 is improved, and the energy efficiency ratio of the rail transit air conditioning unit 100 is further improved. In addition, by utilizing the cold energy of the exhaust gas to improve the heat exchange efficiency of the outdoor heat exchanger 30, the heat exchange fin volume of the outdoor heat exchanger 30 and the air quantity of the fan can be reduced, thereby saving the space of a unit and reducing the cost.

Specifically, the total air inlet 21 is disposed on a side wall of the machine body 20 along a preset width direction, and the total air outlet 22 is disposed on a side wall of the machine body 20 along a preset height direction and opposite to the heat exchange fan 31. That is, the body 20 has a side air intake and top air discharge structure.

In one embodiment, as shown in FIG. 3, the outlet 15 of the exhaust stack 10 is oriented toward the heat exchange tube bank 32. In this way, the gas discharged from the exhaust gas discharge device 10 can be primarily mixed with the external gas and directly used for heat exchange with the heat exchange tube group 32, lowering the temperature of the heat exchange tube group 32, and improving the heat exchange effect of the outdoor heat exchanger 30.

In another embodiment, the outlet 15 of the exhaust stack 10 is disposed in a direction toward the general air inlet 21. In this way, the gas discharged from the exhaust gas discharge device 10 can be sufficiently mixed with the external gas, so that the temperature uniformity of the heat exchange tube group 32 can be improved, and the heat exchange effect of the outdoor heat exchanger 30 can be further improved. In addition, the influence of the negative pressure at the heat exchange fan 31 on the opening and closing of the valve sheet 13 can be further reduced.

Wherein, when the heat exchange fan 31 is turned off, i.e., the rail-mounted air conditioner unit 100 is in the ventilation mode, the exhaust gas may not participate in the heat exchange of the heat exchange tube group 32.

The present application is specifically described with respect to the outlet 15 of the exhaust stack 10 being disposed toward the heat exchange tube bank 32.

In one embodiment, the vertical distance H between the exhaust stack 10 and the heat exchange tube stack 32 satisfies H.gtoreq.50 mm. In this way, a relatively airtight space can be formed between the exhaust gas device 10 and the heat exchange tube group 32, thereby facilitating the flow of exhaust gas and ensuring that the exhaust gas can perform sufficient and uniform heat exchange with the heat exchange tube group 32.

In one embodiment, as shown in fig. 2, the heat exchange tube group 32 and the machine body 20 enclose a first accommodating portion 23 communicating with the main air inlet 21 and a second accommodating portion 24 communicating with the main air outlet 22, the waste discharging device 10 is mounted on the first accommodating portion 23, and the heat exchange fan 31 is disposed on the second accommodating portion 24.

By installing the waste discharging device 10 in the machine body 20, a cavity structure is not required to be additionally arranged for installing the waste discharging device 10, the structure is more compact, the contour degree and the flatness of the vehicle are not affected, and the appearance is more attractive. And, avoid additionally increasing the windage of vehicle. And because the wind resistance of the waste discharging device 10 is smaller, the wind shield, the waste discharging outer cover and other parts are not required to be arranged independently, the volume and the weight of the rail-mounted air conditioning unit 100 can be reduced, and the cost of the parts can be reduced.

Specifically, the heat exchange tube group 32 includes two heat exchange tube rows 321, the two heat exchange tube rows 321 are disposed in a relatively inclined manner, along a predetermined height direction, and toward a direction close to the total air outlet 22, and a distance between the two heat exchange tube rows 321 is in an expanding trend. And the two heat exchange tube rows 321 separate the internal space of the machine body 20, and form a second accommodating portion 24 between the two heat exchange tube rows 321 and a first accommodating portion 23 between the heat exchange tube rows 321 and the side wall of the machine body 20.

It can be understood that the number of the first accommodating portions 23 is two, and each first accommodating portion 23 is correspondingly provided with a total air inlet 21 communicated with itself, and is provided with the waste discharging device 10. That is, the shielding of the heat exchange tube row 321 exists between the waste heat discharging device 10 and the heat exchange fan 31, so that the influence of the heat exchange fan 31 on the valve plate 13 can be further reduced. In general, only one waste discharging device 10 may be disposed in each first housing portion 23, and when the length of the first housing portion 23 is too long or there is a sheet metal barrier in the interior, two or more waste discharging devices 10 may be disposed in each first housing portion 23 according to actual needs.

Further, the length of the waste discharging device 10 is less than or equal to the length of the first receiving portion 23, thereby facilitating the installation of the waste discharging device 10 and enabling uniform heat exchange to the heat exchange tube group 32.

Further, in one embodiment, as shown in fig. 3, the length P of the waste discharging device 10 along the predetermined height direction, the depth Q of the first receiving portion 23 along the predetermined height direction, satisfies p+.q/2.

In this way, the exhaust gas discharge device 10 can be prevented from excessively shielding the total gas inlet 1121, and external gas can be ensured to enter the machine body 20 through the total gas inlet 1121, thereby ensuring normal heat exchange operation of the outdoor heat exchanger 30.

In one embodiment, a gasket or sealant may be provided at the junction of the exhaust device 10 and the machine body 20 to improve the sealing performance of the exhaust device 10.

In an embodiment, the exhaust device 10 is further provided with a sound-absorbing and heat-insulating member, and the sound-absorbing and heat-insulating member can be arranged in a gap at the joint of the exhaust device 10, so that heat loss of the exhaust device 10 is reduced, and noise generated when exhaust gas flows out is reduced.

In an embodiment, the machine body 20 is further provided with a drain outlet 25, and rainwater or condensed water in the machine body 20 is collected and drained through the drain outlet 25, so that the influence on heat exchange of the heat exchange tube set 32 is avoided.

Further, when the drain port 25 is disposed between the waste heat drain 10 and the heat exchange tube group 32, the drain port 25 should be disposed at a side close to the heat exchange tube group 32, so as to avoid that the waste gas discharged from the waste heat drain 10 blows rainwater or condensed water in the drain port 25, which affects uniform heat exchange between the waste heat drain 10 and the heat exchange tube group 32.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of the present application is to be determined by the following claims.

Claims (15)

1. The waste discharge device is characterized by comprising a shell (11), a baffle plate (12) and a valve plate (13),

the shell (11) is provided with a containing cavity (111) and an opening (112) communicated with the containing cavity (111), the partition board (12) is arranged in the containing cavity (111) and divides the containing cavity (111) into an air inlet cavity (1111) and an air outlet cavity (1112), the partition board (12) divides the opening (112) into an air inlet (1121) communicated with the air inlet cavity (1111) and an air outlet (1122) communicated with the air outlet cavity (1112), the air inlet cavity (1111) is communicated with an exhaust duct of a vehicle through the air inlet (1121), and the air outlet cavity (1112) is communicated with an air inlet of an outdoor heat exchanger (30) through the air outlet (1112);

The baffle (12) is provided with an air vent (121), one end of the valve plate (13) is movably hinged to the baffle (12) or the shell (11), and the air vent (121) can be communicated with the air inlet cavity (1111) and the air outlet cavity (1112) through the valve plate (13).

2. The exhaust emission device according to claim 1, wherein when the air pressure of the air intake chamber (1111) is greater than the air pressure of the air outlet chamber (1112), and the air pressure difference between the air intake chamber (1111) and the air outlet chamber (1112) is less than or equal to a preset pressure value, the valve plate (13) is sealed and cover-mounted to the air vent (121), and the air vent (121) is not communicated with the air intake chamber (1111) and the air outlet chamber (1112);

when the air pressure of the air inlet cavity (1111) is larger than the air pressure of the air outlet cavity (1112), and the air pressure difference between the air inlet cavity (1111) and the air outlet cavity (1112) is larger than the preset pressure value, the valve plate (13) can move in a direction away from the air vent (121), and the air vent (121) is communicated with the air inlet cavity (1111) and the air outlet cavity (1112).

3. The exhaust emission device according to claim 1, wherein the housing (11) includes a top plate (113), the partition plate (12) is disposed obliquely or vertically with respect to the top plate (113), and when the partition plate (12) is disposed obliquely with respect to the top plate (113), a side slope of the partition plate (12) near the air outlet chamber (1112) is disposed toward the top plate (113), and the valve plate (13) is disposed on a side of the partition plate (12) near the air outlet chamber (1112).

4. A waste discharge device according to claim 3, characterized in that the partition (12) forms an angle a with the top plate (113) satisfying 45 ° a-90 °.

5. The waste discharge device according to claim 3 or 4, wherein the housing (11) further comprises a first side plate (1141) and a second side plate (1142) disposed at a distance from the partition plate (12), and a vertical distance between an end of the second side plate (1142) away from the top plate (113) and the top plate (113) is smaller than a vertical distance between an end of the partition plate (12) away from the top plate (113) and the top plate (113).

6. The exhaust system according to claim 5, characterized in that the second side plate (1142) forms an angle B with the top plate (113) satisfying 0 ° < b+.ltoreq.60°.

7. The exhaust emission device according to claim 5, characterized in that when the valve sheet (13) moves in a direction away from the vent (121), an end of the valve sheet (13) away from the hinge thereof can abut against the top plate (113);

the length M of the top plate (113) from one end connected with the partition plate (12) to one end connected with the second side plate (1142), and the length N of the valve plate (13) from one end connected with the hinge to one end far away from the hinge satisfies M > N.

8. The waste discharge device according to claim 5, characterized in that when the valve plate (13) moves in a direction away from the vent (121), an end of the valve plate (13) away from the hinge point thereof can abut against the second side plate (1142).

9. A waste arrangement according to claim 3, further comprising a waste grid (14), said waste grid (14) being arranged at said air outlet (1122), said waste grid (14) comprising a main body (143), said main body (143) being provided with a waste outlet (1431), said waste outlet (1431) being in communication with said air outlet cavity (1112) and with an air inlet of an outdoor heat exchanger (30), and said waste outlet (1431) being connected with a plurality of cross-arranged barrier ribs (144).

10. The waste discharge device according to claim 9, characterized in that the angle C formed between the main body portion (143) and the top plate (113) is 0 ° < c+.ltoreq.30°.

11. The exhaust emission apparatus as claimed in claim 9 or 10, wherein the number of the air vents (121) is plural in a predetermined length direction, and the plural air vents (121) are provided at intervals in the partition plate (12) in the predetermined length direction;

the valve plate (13) comprises a plurality of fragments (131), the fragments (131) and the air vents (121) are arranged in a one-to-one correspondence manner, and each air vent (121) can be covered with the fragments (131);

The number of the waste discharge ports (1431) is multiple, the waste discharge ports (1431) are arranged corresponding to the air ports (121), and the total flow area of the waste discharge ports (1431) is larger than or equal to the total flow area of the air ports (121).

12. A rail-mounted air conditioning unit comprising a machine body (20), an outdoor heat exchanger (30) and the exhaust emission device according to any one of claims 1 to 11, the outdoor heat exchanger (30) and the exhaust emission device being mounted in the machine body (20);

the machine body (20) is provided with a total air inlet (21) and a total air outlet (22), the outdoor heat exchanger (30) comprises a heat exchange fan (31) and a heat exchange tube group (32), outdoor gas enters the machine body (20) through the total air inlet (21), waste exhaust gas enters the machine body (20) through an outlet (15) of the waste exhaust device, and after being mixed with the outdoor gas, the waste exhaust gas sequentially passes through the heat exchange tube group (32), the heat exchange fan (31) and the total air outlet (22) to be discharged out of the machine body (20).

13. The rail-mounted air conditioning unit according to claim 12, characterized in that the heat exchange tube group (32) and the machine body (20) enclose a first accommodating part (23) communicated with the total air inlet (21) and a second accommodating part (24) communicated with the total air outlet (22), the waste discharge device is arranged on the first accommodating part (23), and the heat exchange fan (31) is arranged on the second accommodating part (24);

The outlet (15) of the waste discharging device is arranged towards the direction approaching the heat exchange tube group (32); alternatively, the outlet (15) of the waste discharging device is arranged towards the direction close to the total air inlet (21).

14. The rail air conditioning unit of claim 13, characterized in that the vertical distance H between the exhaust device and the heat exchange tube group (32) satisfies H being equal to or greater than 50mm.

15. The rail air conditioner set according to claim 13, wherein a length P of the waste discharging device along a preset height direction, a depth Q of the first receiving portion (23) along the preset height direction, is satisfied, and P is less than or equal to Q/2.