Equipment for mobile cabin

Abstract

A modular shelter device includes a compressor, a four-way reversing valve, a second heat exchanger, a second fan, a first heat exchanger, an electronic expansion valve, a liquid receiver, and a gas-liquid separator. The exhaust end of the compressor is connected to the first port of the four-way reversing valve, the second port of the four-way reversing valve is connected to one end of the first heat exchanger, the first fan blows air onto the first heat exchanger, the other end of the first heat exchanger is connected to one end of the electronic expansion valve through a first passage, a branch of the first passage is also connected to the liquid receiver, the other end of the electronic expansion valve is connected to one end of the second heat exchanger, the second fan blows air onto the second heat exchanger, and the other end of the second heat exchanger is connected to the third port of the four-way reversing valve.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of special vehicles for field operations, and in particular to a shelter equipment. BACKGROUND

[0002] The existing shelter internal equipment is diversified, and the equipment is becoming more and more important, so an intelligent distribution system is needed. Through this system, the power output can be controlled in real time, and accurate protection can be achieved to ensure the safety of the vehicle equipment. Among various electrical equipment, problems that occur during the use of air conditioners include ice blockage (i.e. the freezing of the contraction pipe section of the expansion valve). Although ice blockage is one of the problems of the expansion valve, it is not easy to occur. However, when the shelter or special equipment manufactured by Hengyang Taihao is driven outdoors, such as in strong wind weather or high-speed driving, strong wind enters the vehicle body from the air inlet grille, which can disturb the fan of the vehicle-mounted air conditioner, for example, it can disturb the blowing of the vehicle-mounted fan, causing the cold air generated by the heat absorption at the evaporator position to be unable to enter the vehicle, and the vehicle cannot be cooled. The electronic expansion valve in the vehicle-mounted air conditioner can freeze due to the inability to discharge cold air for a long time, causing ice blockage problems. Therefore, compared with indoor air conditioners, the demand for solving ice blockage problems is greater for shelter air conditioners.

[0003] In actual engineering practice, the following problems exist:

[0004] 1. The existing technology commonly used to solve the ice blockage problem includes connecting a drying device to the air conditioner, completely disassembling and repairing or replacing, and turning off the air conditioner and standing still. However, the outdoor application properties of the shelter equipment make it impossible to apply the above-mentioned solutions. Few existing technologies use heating equipment, but there are problems about when to start heating and when to stop. Since the detection position of the heating element opening and closing time is in the ice blockage section of the expansion valve, the ice blockage section is located in the contraction pipe section, and the small size of the contraction pipe section makes it difficult to arrange the sensor, and there is a problem that the sensor is frozen together after the ice blockage section freezes. Artificial judgment of the opening and closing of the heating element is also not feasible, as artificial judgment cannot determine the cause of the fault and cannot determine the specific opening and closing time of the heating.

[0005] 2. The vehicle-mounted air conditioner in the existing technology can use sensors to respond to different working conditions or faults, but it does not realize the influence of user behavior patterns on operation, and designers do not realize the relationship between user behavior patterns and structure. Therefore, it relies too much on sensors to achieve automation, which increases the cost, and the design idea is too inert and has too much limitation, hindering the development of science and technology.

[0006] 3. The electronic expansion valve in the existing technology has a small fluid area in the contraction pipe, and it is difficult to set a structure inside if the structure size is too large, and it is difficult to ensure the function if the structure size is too small.

[0007] Four, in the prior art electronic expansion valve, when ice blockage occurs, the position of ice block in the contraction pipe cannot be determined, so that targeted processing cannot be carried out.

[0008] Five, in the prior art electronic expansion valve, the stroke mechanism is determined, however, if the fault stroke and the normal stroke are the same, the stroke detection cannot distinguish between faults and normal. SUMMARY

[0009] In order to overcome the above problems, the present application proposes a scheme to solve the above problems simultaneously.

[0010] The technical scheme adopted by the present application to solve its technical problems is: a shelter equipment, comprising a compressor, a four-way reversing valve, a second heat exchanger, a second fan, a first heat exchanger, a first fan, an electronic expansion valve, a liquid accumulator, and a gas-liquid separator; the exhaust end of the compressor is connected to the first port of the four-way reversing valve, the second port of the four-way reversing valve is connected to one end of the first heat exchanger, the first fan blows air to the first heat exchanger, the other end of the first heat exchanger is connected to one end of the electronic expansion valve through a first passage, the first passage is also connected to the liquid accumulator through a branch, the other end of the electronic expansion valve is connected to one end of the second heat exchanger, the second fan blows air to the second heat exchanger, the other end of the second heat exchanger is connected to the third port of the four-way reversing valve, the fourth port of the four-way reversing valve is connected to one end of the gas-liquid separator, the other end of the gas-liquid separator is connected to the suction end of the compressor, and a control valve is further arranged on the branch.

[0011] The electronic expansion valve comprises a valve body, a housing, a driving part, a valve needle, a valve seat, an outlet pipe, a top piece, a heating element, an inlet, and an outlet; wherein the valve needle comprises a needle head, a rod part, an extension rod, a first lifting part, and a second lifting part.

[0012] A housing is arranged above the valve body, a driving part is arranged in the housing, the driving part can drive the valve needle to move up and down, the valve seat is arranged in the valve body, a seat hole is arranged in the valve seat, the needle head of the valve needle can move to block the seat hole, an inlet is arranged on the side of the valve body, the outlet is arranged below the valve body, and the seat hole is in communication with the outlet.

[0013] The outlet pipe is connected to the lower end of the valve seat, two top pieces are connected to the lower end of the valve seat, the two top pieces are located in the outlet pipe, the upper end of the rod part penetrates through the valve body and extends into the housing, the lower end of the rod part is provided with the needle head, the lower end of the needle head is connected to the extension rod, the extension rod extends into the outlet pipe, the lower end of the extension rod is provided with the first lifting part, the second lifting part is further connected to the extension rod above the first lifting part, and the outer wall of the outlet pipe is provided with the heating element.

[0014] The first lifting part comprises a first supporting rod and a first cross rod, and the second lifting part comprises a second supporting rod and a second cross rod; the first supporting rod and the second supporting rod are separated by 180 degrees in the circumferential direction; when the needle is not blocked from the seat hole after the air conditioner is turned on, the ice block is lifted together with the extension rod when the valve needle is lifted by the user operation, and the ice block is blocked by the abutting piece during movement and thus cannot continue to be lifted, so that the valve needle cannot complete the lifting, the position sensor does not deliver the information of the completed stroke of the valve needle to the controller within a first specified time, and then the controller controls the heating element to start heating; when the ice block is melted and the valve needle completes the lifting stroke, the position sensor delivers the information to the controller, and the controller controls the heating element to stop heating; when the valve needle still does not complete the lifting stroke after the heating element is heated for a second specified time, the air conditioner stops running.

[0015] Preferably, the needle head is a frustum.

[0016] Preferably, the needle head comprises a large-diameter end and a small-diameter end.

[0017] Preferably, the diameter of the large-diameter end is smaller than the diameter of the rod part.

[0018] Preferably, the diameter of the small-diameter end is larger than the diameter of the extension rod.

[0019] Preferably, the middle part of the first cross rod is connected to the extension rod through the first supporting rod.

[0020] Preferably, the middle part of the second cross rod is connected to the extension rod through the second supporting rod.

[0021] Preferably, the lower end of the valve body comprises a convex ring part.

[0022] Preferably, the inner wall of the convex ring part is attached to the outer wall of the outlet pipe.

[0023] Preferably, a transition surface is arranged between the needle head and the rod part.

[0024] The beneficial effects of the present application are:

[0025] Firstly, the in-pipe sensor which is difficult to arrange directly is abandoned, and a stroke sensor is used to logically determine whether there is an ice block phenomenon; a extension rod is arranged at the lower end of the needle head of the valve needle, the extension rod is frozen together with the ice block of the ice block and moves as a whole, the ice block is lifted together with the extension rod, the ice block is blocked by the abutting piece during movement and thus cannot continue to be lifted, so that the valve needle cannot complete the lifting, the position sensor does not deliver the information of the completed stroke of the valve needle to the controller within a first specified time, and then the controller controls the heating element to start heating; when the ice block is melted and the valve needle completes the lifting stroke, the position sensor delivers the information to the controller, and the controller controls the heating element to stop heating; when the valve needle still does not complete the lifting stroke after the heating element is heated for a second specified time, the air conditioner stops running.

[0026] Second, regarding the second point raised in the background technology, we conducted an in-depth analysis of user behavior patterns and mapped them into the structural design, resulting in corresponding structural changes. When the air conditioning cooling capacity decreases or there is no airflow from the vehicle's vents, the user's first reaction is to increase the cooling capacity. This is reflected in the operation by increasing the compressor power and widening the opening of the electronic expansion valve through the interactive interface, allowing more refrigerant to circulate. At this time, the valve needle rises, increasing the opening of the expansion valve. Therefore, when using stroke detection to determine if ice blockage exists, the structural improvement point is to set stroke detection during the lifting stroke; thus, the structural design truly conforms to user operating habits. Of course, if the user directly turns off the air conditioning, the downward pressure of the valve needle extension rod also has a certain destructive effect on ice blockage, and after the cooling stops for a period of time, the ice melts and the ice blockage naturally disappears.

[0027] Thirdly, regarding the third point raised in the background technology, at least two opposing "T"-shaped lifting sections are set on the extension rod. The T-shaped structure is conducive to lifting the ice block. At the same time, the T-shape is composed of two straight lines, which will not occupy too much flow area, while ensuring the flow and lifting functions.

[0028] Fourthly, regarding the fourth point raised in the background technology, at least two lifting parts are located at different positions in the height direction of the extension rod, thereby ensuring that ice blocks at different heights are lifted.

[0029] Fifthly, in response to the fifth point raised in the background technology, in order to distinguish between the faulty stroke and the normal stroke, a stop is installed below the valve seat without affecting the fluid flow. The stop can block ice and thus prevent the frozen whole component, but the stop will not interfere with the stroke of the separate extension rod lifting part. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] Figure 1 This is a cross-sectional view of the valve needle in the closed position of the present invention.

[0032] Figure 2 This is a cross-sectional view of the air conditioner starting and the valve needle opening being appropriate according to the present invention.

[0033] Figure 3 This is a cross-sectional view of the air conditioner starting and valve needle maximum opening under normal operating conditions according to the present invention.

[0034] Figure 4 This is a cross-sectional view showing that the valve needle cannot achieve its maximum opening under ice blockage conditions according to the present invention.

[0035] Figure 5 This is a top view of the extension rod of the present invention.

[0036] Figure 6 This is a schematic diagram of the air conditioning system for the mobile cabin of the present invention.

[0037] Figure 7 For the inside of the shelter and air conditioning air out of the map

[0038] In the figure, the reference signs are as follows:

[0039] 1, valve body, 2, shell, 3, valve needle, 4, valve seat, 5, needle, 6, rod, 7, extension rod, 8, first lifting part, 9, second lifting part, 10, outlet pipe, 11, top resistance, 12, heating element, 13, inlet, 14, first branch, 15, first crossbar, 16, second branch, 17, second crossbar, 18, seat hole, 19, ice block, 20, convex ring part, 21, compressor, 22, four-way reversing valve, 23, second heat exchanger, 24, second fan, 25, first heat exchanger, 26, first fan, 27, electronic expansion valve, 28, liquid reservoir, 29, gas-liquid separator, 30, interactive device, 31, main driving position, 32, co-driver position, 33, fax printing and scanning all-in-one machine, 34, paper shredder, 35, air conditioning air outlet. DETAILED DESCRIPTION

[0040] As shown in the figure: a shelter equipment, including compressor, four-way reversing valve, second heat exchanger, second fan, first heat exchanger, first fan, electronic expansion valve, liquid reservoir, gas-liquid separator; the exhaust end of the compressor is connected to the first port of the four-way reversing valve, the second port of the four-way reversing valve is connected to one end of the first heat exchanger, the first fan blows air to the first heat exchanger, the other end of the first heat exchanger is connected to one end of the electronic expansion valve through a first passage, the first passage is also connected to the liquid reservoir through a branch, the other end of the electronic expansion valve is connected to one end of the second heat exchanger, the second fan blows air to the second heat exchanger, the other end of the second heat exchanger is connected to the third port of the four-way reversing valve, the fourth port of the four-way reversing valve is connected to one end of the gas-liquid separator, the other end of the gas-liquid separator is connected to the suction end of the compressor, and a control valve is further arranged on the branch;

[0041] The electronic expansion valve includes a valve body, a shell, a driving part, a valve needle, a valve seat, an outlet pipe, a top resistance, a heating element, an inlet, and an outlet; wherein the valve needle includes a needle, a rod, an extension rod, a first lifting part, and a second lifting part;

[0042] The valve body is provided above with a shell, the shell is provided with a driving part, the driving part can drive the valve needle to move up and down, the valve body is provided with the valve seat, the valve seat is provided with a seat hole, the needle of the valve needle can move to block the seat hole, the valve body is provided with an inlet on the side, the valve body is provided with the outlet below, and the seat hole is in communication with the outlet;

[0043] The upper end of the outlet pipe is connected to the lower end of the valve seat, two top abutting pieces are connected to the lower end of the valve seat and located in the outlet pipe, the upper end of the rod part penetrates the valve body and extends into the shell, a needle is arranged at the lower end of the rod part, the lower end of the needle is connected to the extension rod, the extension rod extends into the outlet pipe, a first lifting part is arranged at the lower end of the extension rod, a second lifting part is further connected to the extension rod above the first lifting part; a heating element is arranged on the outer wall of the outlet pipe.

[0044] The first lifting part comprises a first supporting rod and a first horizontal rod, and the second lifting part comprises a second supporting rod and a second horizontal rod; the first supporting rod and the second supporting rod are separated by 180 degrees in the circumferential direction; when ice blocking occurs, the user operates to lift the valve needle, because the extension rod and the ice block are frozen into one whole, the ice block is lifted along with the lifting of the extension rod, the ice block is blocked by the top abutting piece during movement and thus cannot continue to be lifted, so that the valve needle cannot complete the lifting, the position sensor does not transmit the information that the valve needle completes the stroke to the controller within a first specified time, the controller controls the heating element to start heating, when the ice block melts and the valve needle completes the lifting stroke, the position sensor transmits the information to the controller, and the controller controls the heating element to stop heating; when the valve needle still does not complete the lifting stroke after the heating element heats for a second specified time, the air conditioner stops running.

[0045] As shown in the figure: the needle is a frustum. The needle comprises a large-diameter end and a small-diameter end. The diameter of the large-diameter end is smaller than the diameter of the rod part. The diameter of the small-diameter end is larger than the diameter of the extension rod. The middle part of the first horizontal rod is connected to the extension rod through the first supporting rod. The middle part of the second horizontal rod is connected to the extension rod through the second supporting rod. The lower end of the valve body comprises a convex ring part. The inner wall of the convex ring part is attached to the outer wall of the outlet pipe. A transition surface is arranged between the needle and the rod part.

[0046] Of course, the ice blocking situation is not necessarily as Figure 4 described above, but Figure 4 the ice blocking situation is more common; another situation is that when ice blocking occurs, the user operates to lift the valve needle, because the extension rod and the ice block are frozen into one whole, the ice block and the outlet pipe are also frozen into one whole, and the lifting force cannot overcome the connection between the ice block and the outlet pipe, so that the valve needle cannot be lifted at all; at this time, the position sensor also does not transmit the information that the valve needle completes the stroke to the controller within a first specified time, and the subsequent working procedures are the same as above. The remaining situations include that the volume of the ice block is small and has not yet formed, and the like, which are not discussed one by one, and the present application is dedicated to solving the problem of a common situation.

[0047] The above detailed description is a specific description of the feasible embodiments of the present application, and the embodiments are not used to limit the patent scope of the present application. Any equivalent implementation or change that does not deviate from the present application should be included in the patent scope of the present application.

Claims

1. A sheltered device, characterized by: The air conditioner comprises a compressor, a four-way reversing valve, a second heat exchanger, a second fan, a first heat exchanger, a first fan, an electronic expansion valve, a liquid accumulator, and a gas-liquid separator; an exhaust end of the compressor is connected to a first port of the four-way reversing valve, a second port of the four-way reversing valve is connected to one end of the first heat exchanger, the first fan blows air to the first heat exchanger, the other end of the first heat exchanger is connected to one end of the electronic expansion valve through a first passage, the first passage is further connected to the liquid accumulator through a branch, the other end of the electronic expansion valve is connected to one end of the second heat exchanger, the second fan blows air to the second heat exchanger, the other end of the second heat exchanger is connected to a third port of the four-way reversing valve, a fourth port of the four-way reversing valve is connected to one end of the gas-liquid separator, the other end of the gas-liquid separator is connected to a suction end of the compressor, and a control valve is further arranged on the branch. The electronic expansion valve comprises a valve body, a shell, a driving part, a valve needle, a valve seat, an outlet pipe, a top abutting piece, a heating element, an inlet, and an outlet; the valve needle comprises a needle head, a rod part, an extension rod, a first lifting part, and a second lifting part. The shell is arranged above the valve body, the driving part is arranged in the shell, the driving part can drive the valve needle to move up and down, the valve seat is arranged in the valve body, the valve seat is provided with a seat hole, the needle head of the valve needle can move to block the seat hole, the inlet is arranged on the side of the valve body, the outlet is arranged below the valve body, and the seat hole is communicated with the outlet. The outlet pipe is connected to the lower end of the valve seat, two top abutting pieces are connected to the lower end of the valve seat and arranged in the outlet pipe, the upper end of the rod part penetrates through the valve body and extends into the shell, the lower end of the rod part is provided with the needle head, the lower end of the needle head is connected with the extension rod, the extension rod extends into the outlet pipe, the lower end of the extension rod is provided with the first lifting part, the second lifting part is further connected to the extension rod above the first lifting part, and the outer wall of the outlet pipe is provided with the heating element. The first lifting part comprises a first supporting rod and a first horizontal rod, the second lifting part comprises a second supporting rod and a second horizontal rod, the first supporting rod and the second supporting rod are separated by 180 degrees in the circumferential direction, the needle head does not block the seat hole after the air conditioner is turned on, when ice blocking occurs and the user operates to lift the valve needle, the ice block is frozen with the extension rod as a whole, so that the ice block is lifted along with the lifting of the extension rod, the ice block is blocked by the top abutting piece during movement and thus cannot continue to be lifted, so that the valve needle cannot complete the lifting, the position sensor does not transmit the information that the valve needle completes the stroke to the controller within a first specified time, the controller controls the heating element to start heating, when the ice block is melted and the valve needle completes the lifting stroke, the position sensor transmits information to the controller, and the controller controls the heating element to stop heating; when the valve needle still does not complete the lifting stroke after the heating element is heated for a second specified time, the air conditioner stops running. The middle part of the first horizontal rod is connected to the extension rod through the first supporting rod, the middle part of the second horizontal rod is connected to the extension rod through the second supporting rod, the lower end of the valve body comprises a convex ring part, the inner wall of the convex ring part is attached to the outer wall of the outlet pipe, and a transition surface is arranged between the needle head and the rod part.

2. A shelter device according to claim 1, characterized in that: The needle head is in the shape of a frustum of a cone.

3. A shelter device according to claim 2, wherein: The needle includes a large diameter end and a small diameter end.

4. A shelter-mounted device according to claim 3, characterized in that: The large diameter end has a diameter that is less than a diameter of the shaft.

5. A shelter-mounted device according to claim 4, characterized in that: The small diameter end has a diameter that is greater than a diameter of the elongate shaft.

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