Dual-system automotive evaporator

Abstract

The utility model discloses a dual-system evaporator for a vehicle, and belongs to the technical field of evaporators for refrigeration vehicles. The evaporator mainly comprises an evaporator shell, the two ends of the evaporator shell are fixedly connected with side fixing plates respectively, a plurality of sets of heat exchange coils are arranged in the evaporator shell, a plurality of pipeline supporting plates used for supporting and fixing the heat exchange coils are fixedly connected in the evaporator shell, and each set of heat exchange coils comprises a first coil and a second coil which are arranged in a staggered mode. The two ends of the first coil pipe and the two ends of the second coil pipe penetrate through the side fixing plates. The two sets of heat exchange channels which operate independently are additionally arranged in the evaporator and are arranged in the crossed mode, the crossed heat exchange channels enable the temperature distribution of the evaporator to be more uniform, and even if one set of heat exchange channels cannot work normally, the other set of heat exchange channels can still effectively maintain the refrigeration temperature. The utility model is mainly used for refrigeration of the refrigeration semitrailer.

Description

Technical Field

[0001] The utility model belongs to the technical field of evaporators for refrigerated vehicles, and more specifically, particularly relates to a dual-system vehicle evaporator. Background Art

[0002] Refrigerated trucks are mainly used to transport items that need to be stored at low temperatures, such as food, medicine, biological products, etc. They usually consist of a chassis, a compartment body, a refrigeration unit, and a control system. The refrigeration unit is the core part of the refrigerated truck, mainly including a compressor, a condenser, an evaporator, and a throttling device.

[0003] A Chinese patent with the authorization announcement number "CN216769855U" discloses an evaporator heat exchange pipe for a refrigerated truck refrigeration unit, which includes an evaporator core body, core body copper pipes, a liquid inlet pipe, and a return air pipe; the core body copper pipes are inserted and connected to the evaporator core body; the liquid outlet end of the liquid inlet pipe is inserted and connected to the evaporator core body, and the liquid inlet pipe is communicated with the core body copper pipes; the return air end of the return air pipe is inserted and connected to the evaporator core body; the liquid inlet pipe includes a liquid inlet bent pipe section and a liquid inlet parallel pipe section fixedly connected to the liquid inlet bent section; the return air pipe includes a return air bent pipe section and a return air parallel pipe section fixedly connected to the return air bent pipe section; the liquid inlet parallel pipe section and the return air parallel pipe section are arranged side by side, and a part of the outer peripheral surface of the liquid inlet parallel pipe section is attached to a part of the outer peripheral surface of the return air parallel pipe section. The liquid in the liquid inlet parallel pipe section is preheated by the heat of the return air parallel pipe section, so that the enthalpy value of the evaporator becomes higher, the refrigeration rate becomes higher, and the refrigeration efficiency and refrigeration effect are improved.

[0004] Although the above patent solves the problem of low refrigeration efficiency of refrigerated trucks, there are still the following problems in use: 1. There is only one refrigeration system in the refrigerated truck. When this refrigeration system fails, the refrigerated temperature of the goods cannot be maintained; 2. It is impossible to layout two groups of heat exchange channels inside the evaporator while ensuring uniform temperature distribution. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a dual-system vehicle evaporator. Two groups of independently operating heat exchange channels are added inside the evaporator, and the two groups of heat exchange channels are arranged in a cross pattern. The cross-arranged heat exchange channels make the temperature distribution in the evaporator more uniform, realizing that even if one group of heat exchange channels cannot work properly, the other group of heat exchange channels can still effectively maintain the refrigeration temperature.

[0006] The described dual-system vehicle evaporator includes an evaporator housing. Side fixing plates are respectively fixedly connected to both ends of the evaporator housing. A plurality of groups of heat exchange coils are arranged inside the evaporator housing. A plurality of pipe support plates for supporting and fixing the heat exchange coils are fixedly connected inside the evaporator housing. Each group of heat exchange coils includes a first coil and a second coil arranged in an alternating pattern. Both ends of the first coil and the second coil penetrate through the side fixing plates.

[0007] Preferably, a plurality of rows of straight pipe section groups are arranged at equal intervals inside the evaporator housing. Each row of straight pipe section groups includes a plurality of first straight pipe sections arranged in parallel and distributed at equal intervals. The first straight pipe sections penetrate through the pipe support plate, and the first straight pipe sections in adjacent two rows of straight pipe section groups are arranged staggeredly.

[0008] Preferably, the first coil is composed of a plurality of first straight pipe sections and a first bending section. The plurality of first straight pipe sections are connected in series by the first bending section to form the first coil. The second coil is composed of a plurality of first straight pipe sections and a second bending section. The plurality of first straight pipe sections are connected in series by the second bending section to form the second coil.

[0009] Preferably, the first straight pipe sections in odd rows and even rows are respectively distributed at equal intervals in vertical columns, and the first straight pipe sections in adjacent two columns are arranged staggeredly. The first coil and the second coil are both formed by connecting in series a plurality of first straight pipe sections in adjacent columns.

[0010] Preferably, the vertical columns are even columns. The two ends of the first coil are respectively provided with a first liquid inlet and a first liquid outlet. The first liquid inlet and the first liquid outlet are arranged at one end of the evaporator housing. The two ends of the second coil are respectively provided with a second liquid inlet and a second liquid outlet. The second liquid inlet and the second liquid outlet are arranged at the other end of the evaporator housing.

[0011] Preferably, each group of the first coil and the second coil is formed by connecting in series at least four rows of first straight pipe sections, and the first coil and the second coil are arranged in a cross manner.

[0012] Preferably, the first straight pipe sections in the second coil are distributed in a "Z" shape, and the first straight pipe sections in the first coil are distributed in a multi-fold line structure.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The present utility model is provided with independent first coil and second coil. During operation, the first coil is connected to the first refrigeration system, and the second coil is connected to the second refrigeration system. The first refrigeration system and the second refrigeration system are independent of each other. During refrigeration, only one of the refrigeration systems can be turned on, and the other refrigeration system is used as a standby system, so that even if one of the refrigeration systems fails, the other refrigeration system can still maintain the corresponding refrigeration temperature.

[0015] 2. The first coil and the second coil are arranged in a cross manner, which can make the distribution of the two coils inside the evaporator housing more uniform. When only one refrigeration system is operating, the temperature inside the evaporator is more uniform, thereby making full use of the heat exchange area of all fins, making the heat exchange efficiency of the entire evaporator higher, and greatly improving the evaporation effect. Description of the Drawings

[0016] Figure 1 It is a structural schematic diagram of the present utility model;

[0017] Figure 2 It is a distribution schematic diagram of multiple groups of heat exchange coils;

[0018] Figure 3 It is a right view of the present utility model;

[0019] Figure 4 is Figure 3 a structural schematic diagram of part A in

[0020] Figure 5 a right - hand side structural schematic diagram of the first coil and the second coil;

[0021] Figure 6 a side - view distribution schematic diagram of the first straight pipe section;

[0022] Figure 7 a left - hand side structural schematic diagram of the first coil and the second coil;

[0023] Figure 8 a disassembled schematic diagram of the first coil and the second coil;

[0024] Figure 9 It is a reference diagram of the usage state of the present utility model.

[0025] In the figure, 1. Evaporator shell; 2. Pipe support plate; 3. Side fixing plate; 4. First coil; 401. First liquid inlet; 402. First liquid outlet; 403. First straight pipe section; 404. First bending section; 5. Second coil; 501. Second liquid inlet; 502. Second liquid outlet; 503. Second bending section; 6. Fan; 7. Vehicle refrigeration unit; 8. First refrigeration system; 9. Second refrigeration system. Specific embodiments

[0026] The following further explains the present utility model in conjunction with the attached drawings:

[0027] For the orientation terms involved in the paragraphs of detailed description, they are only for the convenience of those skilled in the art to understand the technical solutions recorded in this application according to the visual orientation shown in the attached drawings. Unless otherwise clearly specified and limited, terms such as "set", "installed", "connected", etc. should be understood in a broad sense. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] Such as Figures 1 to 9As shown in the figure, a dual-system vehicle evaporator includes an evaporator housing 1. A fin structure for increasing the heat exchange area is provided on the evaporator housing 1. Side fixing plates 3 are fixedly connected to both ends of the evaporator housing 1 respectively. Multiple heat exchange coil groups are arranged inside the evaporator housing 1. A plurality of pipe support plates 2 for supporting and fixing the heat exchange coil groups are fixedly connected inside the evaporator housing 1. The pipe support plates 2 are arranged parallel to the side fixing plates 3, and the multiple pipe support plates 2 are arranged at equal intervals, which can better support and fix the heat exchange coil groups, thereby balancing the forces at both ends of the heat exchange coil groups. Each heat exchange coil group includes a first coil 4 and a second coil 5 arranged alternately. Both ends of the first coil 4 and the second coil 5 penetrate through the side fixing plates 3. The first coil 4 and the second coil 5 are independent of each other. During installation, the first coil 4 is connected to the first refrigeration system 8, and the second coil 5 is connected to the second refrigeration system 9. The first refrigeration system 8 and the second refrigeration system 9 are independent of each other. During operation, only one of the refrigeration systems can be turned on, and the other refrigeration system is used as a backup system, so that even if one of the refrigeration systems fails, the other refrigeration system can still maintain the corresponding refrigeration temperature.

[0029] In order to improve the working efficiency of the evaporator, in this embodiment, by arranging the first coil 4 and the second coil 5 alternately, the distribution of the two types of coils inside the evaporator housing 1 can be made more uniform, that is, when only one refrigeration system is working, the temperature inside the evaporator is more uniform. Under the action of the fin structure, the heat exchange efficiency of the entire evaporator is higher, thereby improving the evaporation effect.

[0030] As Figure 3 、 Figure 4 and Figure 6 shown, multiple rows of straight pipe segment groups arranged at equal intervals are provided inside the evaporator housing 1. Each row of straight pipe segment groups includes multiple first straight pipe segments 403 arranged in parallel and at equal intervals. The first straight pipe segments 403 penetrate through the pipe support plates 2 and the side fixing plates 3 on both sides. The first straight pipe segments 403 in adjacent two rows of straight pipe segment groups are arranged staggeredly, that is, the first straight pipe segment 403 in one row is located between or in the middle of two first straight pipe segments 403 in the adjacent row, preferably in the middle position.

[0031] The first straight pipe segments 403 in odd rows and even rows are respectively arranged in vertical columns at equal intervals, and the first straight pipe segments 403 in adjacent two columns are arranged staggeredly, that is, the first straight pipe segment 403 in one column is located between or in the middle of two first straight pipe segments 403 in the adjacent column, preferably in the middle position.

[0032] Specifically, as Figure 5 、 Figure 7 and Figure 8As shown in the figure, the first coiled pipe 4 is composed of multiple first straight pipe segments 403 and a first bending section 404. The multiple first straight pipe segments 403 are connected in series by the first bending section 404 to form the first coiled pipe 4. The second coiled pipe 5 is composed of multiple first straight pipe segments 403 and a second bending section 503. The multiple first straight pipe segments 403 are connected in series by the second bending section 503 to form the second coiled pipe 5.

[0033] In this embodiment, the vertical columns of the first straight pipe segments 403 are even-numbered columns. The function is to make the inlets and outlets of the first coiled pipe 4 or the second coiled pipe 5 in multiple groups of heat exchange coiled pipes located on the same side, which is convenient for connecting to the refrigeration system. Specifically, the two ends of the first coiled pipe 4 are respectively provided with a first liquid inlet 401 and a first liquid outlet 402. The first liquid inlet 401 and the first liquid outlet 402 are arranged at one end of the evaporator housing 1. The two ends of the second coiled pipe 5 are respectively provided with a second liquid inlet 501 and a second liquid outlet 502. The second liquid inlet 501 and the second liquid outlet 502 are arranged at the other end of the evaporator housing 1.

[0034] Both the first coiled pipe 4 and the second coiled pipe 5 are formed by connecting multiple first straight pipe segments 403 in adjacent columns in series. The first straight pipe segments 403 in adjacent columns are not in the same horizontal plane, which provides conditions for the subsequent staggered arrangement of the first coiled pipe 4 and the second coiled pipe 5. As Figure 6 shown, each group of the first coiled pipe 4 and the second coiled pipe 5 is formed by connecting at least four rows of first straight pipe segments 403 in series. In this embodiment, the first coiled pipe 4 and the second coiled pipe 5 are preferably formed by connecting four rows and six columns of first straight pipe segments 403 in series, and the first coiled pipe 4 and the second coiled pipe 5 are arranged in a cross shape, that is, both the first coiled pipe 4 and the second coiled pipe 5 adopt one first straight pipe segment 403 in each column, and the first straight pipe segments 403 in the first coiled pipe 4 and the second coiled pipe 5 cover the first straight pipe segments 403 in four rows. That is to say, both the first coiled pipe 4 and the second coiled pipe 5 include the first straight pipe segments 403 in adjacent four rows, so that after the first coiled pipe 4 and the second coiled pipe 5 are connected in series, there is a cross phenomenon. This structure enables that even if only one refrigeration system works (either the first coiled pipe 4 or the second coiled pipe 5 works), the first straight pipe segments 403 through which the refrigerant flows can still be evenly distributed throughout the entire evaporator, thereby making the temperature inside the evaporator more uniform and the evaporation effect better.

[0035] In this embodiment, when viewed in the longitudinal section, preferably, the first straight pipe segments 403 in the second coiled pipe 5 are distributed in a "Z" shape, and the first straight pipe segments 403 in the first coiled pipe 4 are distributed in a multi-fold line structure, and there is at least one intersection point between the multi-fold line structure and the "Z" shape.

[0036] As Figure 9As shown in the figure, when the utility model is in use, it cooperates with the refrigeration system of the refrigerated truck. The evaporator housing 1 is inclined and arranged above the refrigeration system. The evaporation fan 6 in the refrigeration system is arranged above the evaporator housing 1. A plurality of first coils 4 in multiple groups of heat exchange coils are connected to the first refrigeration system 8 through the first main pipeline, and a plurality of second coils 5 are connected to the second refrigeration system 9 through the second main pipeline. Throttle valves are respectively arranged on the first main pipeline and the second main pipeline. During operation, according to needs, the first refrigeration system 8 or the second refrigeration system 9 or both the first refrigeration system 8 and the second refrigeration system 9 are turned on simultaneously. The two refrigeration systems can work independently. After heat exchange through the compressor and the condenser respectively, the refrigerant is supplied into the utility model. Under the action of the throttle valve, the refrigerant is converted into a low-temperature and low-pressure liquid structure. The evaporation fan 6 is started, and the refrigerant enters the first coil 4 or the second coil 5, absorbs the heat in the air, turns the refrigerant into a gas state, and then returns to the compressor again, so as to cycle for refrigeration. Only one of the first coil 4 or the second coil 5 can be used, and the other is used as a backup. Both types of coils make the first straight pipe sections 403 through which the refrigerant flows evenly distributed throughout the evaporator, so that the temperature inside the evaporator is more uniform, making full use of the heat exchange area of all fins and achieving a better evaporation effect.

[0037] Finally, although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. The narrative way of this specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dual-system vehicle evaporator, comprising an evaporator housing (1), and side fixing plates (3) are fixedly connected to both ends of the evaporator housing (1), characterized in that: The evaporator housing (1) is provided with multiple groups of heat exchange coils. Inside the evaporator housing (1), there are fixedly connected multiple pipe support plates (2) for supporting and fixing the heat exchange coils. Each group of heat exchange coils includes a first coil (4) and a second coil (5) arranged in an alternating manner. Both ends of the first coil (4) and the second coil (5) penetrate through the side fixing plate (3).

2. The dual-system vehicle evaporator according to claim 1, characterized in that: Inside the evaporator housing (1), there are multiple rows of straight pipe section groups arranged at equal intervals. Each row of straight pipe section groups includes multiple first straight pipe sections (403) arranged in parallel and equally spaced. The first straight pipe sections (403) penetrate through the pipe support plates (2), and the first straight pipe sections (403) in adjacent two rows of straight pipe section groups are arranged staggeredly.

3. The dual-system vehicle evaporator according to claim 2, characterized in that: The first coil (4) is composed of multiple first straight pipe sections (403) and a first bending section (404). The multiple first straight pipe sections (403) are connected in series by the first bending section (404) to form the first coil (4). The second coil (5) is composed of multiple first straight pipe sections (403) and a second bending section (503). The multiple first straight pipe sections (403) are connected in series by the second bending section (503) to form the second coil (5).

4. The dual-system vehicle evaporator according to claim 3, wherein: The first straight pipe sections (403) in odd rows and even rows are respectively arranged in vertical columns at equal intervals, and the first straight pipe sections (403) in adjacent two columns are arranged staggeredly. Both the first coil (4) and the second coil (5) are formed by connecting multiple first straight pipe sections (403) in adjacent columns in series.

5. The dual-system vehicle evaporator according to claim 4, characterized in that: The vertical column is an even column. Both ends of the first coil (4) are respectively provided with a first liquid inlet (401) and a first liquid outlet (402). The first liquid inlet (401) and the first liquid outlet (402) are arranged at one end of the evaporator housing (1). Both ends of the second coil (5) are respectively provided with a second liquid inlet (501) and a second liquid outlet (502). The second liquid inlet (501) and the second liquid outlet (502) are arranged at the other end of the evaporator housing (1).

6. The dual-system vehicle evaporator according to claim 5, wherein: Each group of the first coil (4) and the second coil (5) is formed by connecting at least four rows of first straight pipe sections (403) in series, and the first coil (4) and the second coil (5) are arranged in a cross manner.

7. The dual-system vehicle evaporator according to claim 6, characterized in that: The first straight pipe sections (403) in the second coil (5) are distributed in a "Z" shape, and the first straight pipe sections (403) in the first coil (4) are distributed in a multi-fold line structure.

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