Cold storage indoor unit, cold storage air conditioner and cold storage

Abstract

The utility model provides a cold storage indoor unit, a cold storage air conditioner and a cold storage. The cold storage indoor unit comprises a chassis, a heat exchanger, a first connecting valve and a second connecting valve. The chassis has an air outlet and a return air outlet. The heat exchanger is arranged in the chassis and is located between the air outlet and the return air outlet. The heat exchanger has a plurality of fins and a heat exchange tube assembly. The heat exchange tube assembly passes through the fins. The first connecting valve and the second connecting valve are both installed on the chassis. The first connecting valve comprises a first valve body provided with a first flow channel. The output end of the first flow channel is connected to the first inlet end of the heat exchange tube assembly. The first valve body is provided with a first interface at the output end of the first flow channel. The second connecting valve comprises a second valve body provided with a second flow channel. The input end of the second flow channel is connected to the first outlet end of the heat exchange tube assembly. The second valve body is provided with a second interface at the output end of the second flow channel. The cold storage air conditioner is provided with the cold storage indoor unit, and the cold storage is provided with the above-mentioned cold storage air conditioner. The cold storage indoor unit has the advantages of being easy to install and having low installation cost.

Description

Technical Field

[0001] The utility model relates to the technical field of cold storage, in particular to a cold storage indoor unit, a cold storage air conditioner provided with the cold storage indoor unit, and a cold storage provided with the cold storage air conditioner. Background Art

[0002] Cold storage is mainly used to store items with specific temperature and humidity requirements. Compared with traditional refrigerators, cold storage has a larger cooling capacity and larger storage space. It is widely used in food, chemical, medical, scientific experiments and other fields. There are two main types of cold storage:

[0003] The first one is to lay out radiator pipes in the warehouse to cool the warehouse by exchanging heat with the air in the warehouse through the radiator pipes. However, this type of cold storage has the disadvantage that when defrosting the radiator pipes, the refrigeration system of the cold storage needs to stop running to wait for the frost on the radiator pipes to melt naturally, so the defrosting time is long and the defrosting efficiency is low.

[0004] The second method is to install a cold storage indoor unit in the warehouse, such as Figure 1 and Figure 2 As shown, the cold storage indoor unit 9 includes a case 91, a heat exchanger 92, a fan module 93 and a heating module 94. The case 91 is provided with an air outlet; the heat exchanger 92 is arranged in the case 91, and both ends of the heat exchange pipe 921 of the heat exchanger 92 are led to the rear of the case 91, so as to be connected with the cold storage outdoor unit through a copper tube 95; the fan module 93 is installed on the air outlet, and the fan module 93 is used to blow air into the warehouse to blow the cold air formed by the heat exchange of the heat exchanger 92 into the warehouse; the heating module 94 is arranged on the heat exchanger 92, and when the heat exchanger 92 needs to be defrosted, the refrigeration system of the cold storage is controlled to suspend refrigeration and the heating module 94 is turned on to melt the frost blocks of the heat exchanger 92. This type of cold storage can solve the shortcomings of the first type of cold storage mentioned above; however, the shortcomings of this cold storage are: when the cold storage indoor unit 9 is connected to the cold storage outdoor unit through the copper tube 95, welding equipment is required to weld and fix the two ends of the heat exchange tube 921 of the heat exchanger 92 to the corresponding copper tube 95, which makes the installation difficult, the installation steps are cumbersome, the installation time is long and the installation cost is high. In addition, when the welding quality at the connection between the heat exchange tube 921 and the copper tube 95 is not good, it is also easy to cause refrigerant leakage at the welding point, thereby affecting the normal use of the cold storage and posing a safety hazard. Summary of the invention

[0005] In order to solve the above problems, the main purpose of the utility model is to provide a cold storage indoor unit which is easy to install and has low installation cost.

[0006] Another object of the utility model is to provide a cold storage air conditioner equipped with the cold storage indoor unit.

[0007] Another object of the utility model is to provide a cold storage outdoor unit provided with the cold storage air conditioner.

[0008] In order to achieve the main purpose of the utility model, the utility model provides a cold storage indoor unit, including a chassis, a heat exchanger and a fan module. The chassis has an air outlet and a return air outlet. The heat exchanger is arranged in the chassis, and the heat exchanger is located between the air outlet and the return air outlet. The heat exchanger has a plurality of fins and a heat exchange tube assembly. The plurality of fins are distributed along the thickness direction of the fins, and the heat exchange tube assembly passes through the fins. The fan module is connected to the chassis, and the fan module supplies air to the outside of the chassis through the air outlet. The cold storage indoor unit also includes a first connecting valve and a second connecting valve. The first connecting valve includes a first valve body, a first flow channel is arranged in the first valve body, and the output end of the first flow channel is connected to the first inlet end of the heat exchange tube assembly. The first valve body is provided with a first interface at the output end of the first flow channel. The second connecting valve has a second valve body, a second flow channel is arranged in the second valve body, and the input end of the second flow channel is connected to the first outlet end of the heat exchange tube assembly. The second valve body is provided with a second interface at the output end of the second flow channel.

[0009] As can be seen from the above, by adding the first connecting valve and the second connecting valve, when the cold storage indoor unit is connected to the copper tube connected to the cold storage outdoor unit, the first connecting valve can be quickly assembled and docked with the setting connection head on the corresponding copper tube through the first joint on itself, and the second connection head of the second connecting valve can be quickly assembled and docked with the setting connection head on the corresponding copper tube through the second connection head on itself. As a result, when the cold storage indoor unit is connected to the copper tube, there is no need to use welding equipment for welding operations, making the assembly between the cold storage indoor unit and the copper tube more convenient and easy to operate, and the installation is faster and the installation cost is lower. At the same time, the firmness, airtightness and reliability of the connection between the cold storage indoor unit and the copper tube can be guaranteed.

[0010] A further solution is that the first connecting valve also includes a first valve core and a first adjusting rod, the first valve body has a first valve hole, the first valve hole is connected to the first flow channel, the first valve core can be slidably installed in the first valve hole, the first adjusting rod is connected to the first valve core, and the first adjusting rod can adjust the first valve core to extend into or withdraw from the first flow channel; the second connecting valve also includes a second valve core and a second adjusting rod, the second valve body has a second valve hole, the second valve hole is connected to the second flow channel, the second valve core can be slidably installed in the second valve hole, the second adjusting rod is connected to the second valve core, and the second adjusting rod can adjust the second valve core to extend into or withdraw from the second flow channel.

[0011] As can be seen from the above, the above design enables the first connecting valve to adjust the flow and pressure of the refrigerant input to the heat exchanger, and at the same time enables the second connecting valve to adjust the flow and pressure of the refrigerant output to the air-conditioning outdoor unit, thereby enriching the functions of the first connecting valve and the second connecting valve and improving the practicality of the first connecting valve and the second connecting valve.

[0012] A further solution is that the second valve body also has an air hole, which is connected to the second flow channel, and the second valve core can block the connection between the air hole and the second flow channel; the second connecting valve also includes a valve core, which is installed in the air hole.

[0013] As can be seen from the above, this design makes it easier to drain and evacuate the refrigerant when the cold storage indoor unit needs to be repaired, without having to move to the cold storage outdoor unit for operation, which greatly improves the convenience of repairing the cold storage indoor unit. In addition, if conditions are met, refrigerant can also be added at the cold storage indoor unit through the second connecting valve.

[0014] A further solution is that the chassis includes a first side cover, a second side cover, a top cover, a water receiving tray, a panel and a vertical plate, the first side cover and the second side cover are distributed along the length direction of the chassis, the top cover is located at the top of the chassis, the top cover is connected between the first side cover and the second side cover, the water receiving tray is located at the bottom of the chassis, the water receiving tray is connected between the first side cover and the second side cover, the first side cover, the second side cover, the top cover and the water receiving tray form a return air outlet at the rear of the chassis, the panel is located at the front of the chassis, the panel is respectively connected to the first side cover, the second side cover and the water receiving tray, the air outlet is formed on the panel, the vertical plate is connected to one end of the water receiving tray, the first side cover is provided with a first avoidance opening, the vertical plate is located in the first avoidance opening, and the first connecting valve and the second connecting valve are installed on the vertical plate.

[0015] As can be seen from the above, the above design makes it basically unnecessary to disassemble the first connecting valve and / or the second connecting valve when repairing the cold storage indoor unit, thereby making the repair of the cold storage indoor unit more convenient and easy to operate.

[0016] A further solution is that there are two vertical plates, one of which is installed at one end of the water receiving tray, a second avoidance port is provided on the second side cover, and the vertical plate located at the second side cover is arranged in the second avoidance port; each vertical plate is provided with a first connecting valve and a second connecting valve, and the heat exchange tube assembly has two first inlet ends and two first outlet ends, the two first inlet ends correspond one-to-one to the two first connecting valves, and the two first outlet ends correspond one-to-one to the two second connecting valves.

[0017] As can be seen from the above, this design enables the cold storage indoor unit to adapt to more complex installation environments.

[0018] A further solution is that the heat exchange tube assembly includes a multi-group manifold tube, an input tube and an output tube, the multi-group manifold tube fins are distributed in the length direction, the diverter tube is winding and passes through the fins, the input tube has a first inlet end and multiple diverter outlet ends, the multiple diverter outlet ends correspond one-to-one to the multi-group manifold tubes, and one diverter outlet end is connected to the second inlet end of a group of manifold tubes; the output tube has a first outlet end and multiple diverter inlet ends, the multiple diverter inlet ends correspond one-to-one to the multi-group manifold tubes, and one diverter inlet end is connected to the second outlet end of a group of manifold tubes.

[0019] It can be seen from the above that the uniformity of refrigerant heat exchange can be improved through the design of the heat exchange tube assembly, so that the evaporation temperature of the heat exchanger is more uniform, and the refrigeration effect of the cold storage indoor unit is improved.

[0020] A further solution is that the heat exchanger also includes an electronic pressure regulating valve and a capillary tube; the input pipe includes an input section, a relay section, a main section and multiple branch sections, the first end of the input section is a first inlet end, the second end of the input section is connected to the inlet of the electronic pressure regulating valve, the first end of the relay section is connected to the outlet of the electronic pressure regulating valve, the second end of the relay section is connected to the main section, the first end of the branch section is connected to the main section, the second end of the branch section is a diversion outlet end, the first end of the capillary tube is connected to the input section, and the second end of the capillary tube is connected to the relay section.

[0021] As can be seen from the above, this design enables the indoor heat exchanger for cold storage to cooperate with refrigerants, compressors, etc. to achieve low-temperature and ultra-low-temperature refrigeration, thereby improving the refrigeration range and refrigeration capacity of the indoor heat exchanger for cold storage.

[0022] A further solution is that the fan module is installed in the chassis, the fan module includes a bracket, a drive motor, fan blades and a mesh cover, the bracket is connected to the chassis, the drive motor is installed on the bracket, the fan blades are installed on the drive shaft of the drive motor, and the mesh cover is installed on the chassis and covers the air outlet; a first shock absorber is provided between the bracket and the motor, and a second shock absorber is provided between the bracket and the chassis; the number of air outlets is between 1 and 8, the number of fan modules is between 1 and 8, and one fan module is provided corresponding to one air outlet.

[0023] As can be seen from the above, through the structural design of the fan module, it is more convenient to repair the machine in the cold storage, and the production cost and maintenance cost of the machine in the cold storage can be reduced; in addition, it is also beneficial to reduce the weight of the machine in the cold storage, reduce the vibration generated when the machine in the cold storage is working, and reduce the noise generated when the machine in the cold storage is working; the setting of the first shock absorber and the second shock absorber can absorb the vibration generated during the operation of the fan module, thereby further reducing the vibration and noise generated when the cold storage indoor unit is working; and through the design of the number of fan modules, the cold storage indoor unit can be set to different matching specifications, so that the cold storage indoor unit can be suitable for warehouses of different sizes, and can ensure that while meeting the refrigeration needs in the warehouse, the warehouse space occupied by the cold storage indoor unit is better reduced.

[0024] In order to achieve another purpose of the utility model, the utility model provides a cold storage air conditioner, wherein the cold storage air conditioner also includes the cold storage indoor unit mentioned above.

[0025] It can be seen from the above that by setting the above-mentioned cold storage indoor unit, there is no need to use welding equipment for welding work during the installation of the cold storage air conditioner, making the assembly between the cold storage indoor unit and the copper pipe more convenient and easy to operate, and the installation is faster and the installation cost is lower. At the same time, the firmness, airtightness and reliability of the connection between the cold storage indoor unit and the copper pipe can be ensured.

[0026] In order to achieve another purpose of the utility model, the utility model provides a cold storage, including a storeroom, wherein the cold storage air conditioner mentioned above is also included, and the cold storage indoor unit is installed in the storeroom.

[0027] As can be seen from the above, by installing the above-mentioned cold storage air conditioner, the cold storage does not need to use welding equipment for welding during its installation, making the assembly between the cold storage indoor unit and the copper pipe more convenient and easy to operate, and the installation is faster and the installation cost is lower. At the same time, it can also ensure the firmness, airtightness and reliability of the connection between the cold storage indoor unit and the copper pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is the installation status diagram of the existing cold storage indoor unit.

[0029] Figure 2 It is a cross-sectional view of an existing cold storage indoor unit.

[0030] Figure 3 It is a stereogram of an embodiment of a cold storage indoor unit of the utility model.

[0031] Figure 4 It is a cross-sectional schematic diagram of an embodiment of a cold storage indoor unit of the utility model.

[0032] Figure 5 It is an exploded view of the chassis of an embodiment of a cold storage indoor unit of the utility model.

[0033] Figure 6 It is a structural schematic diagram of a cold storage indoor unit embodiment of the utility model with some components omitted.

[0034] Figure 7 It is a cross-sectional schematic diagram of the local structure of a heat exchanger of an embodiment of a cold storage indoor unit of the utility model.

[0035] Figure 8 It is a structural diagram of the output pipe of an embodiment of a cold storage indoor unit of the utility model.

[0036] Fig. 9 It is a structural diagram of the input pipe of an embodiment of a cold storage indoor unit of the utility model.

[0037] Fig.10 It is a cross-sectional view of the first connecting valve of the cold storage indoor unit embodiment of the utility model.

[0038] Fig.11 It is a cross-sectional view of the second connecting valve of the cold storage indoor unit embodiment of the utility model.

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0040] Cold storage indoor unit embodiment

[0041] Reference Figure 3 and Figure 4 The cold storage indoor unit 100 includes a chassis 1, a heat exchanger 2, a fan module 3, a first connecting valve 4 and a second connecting valve 5. The chassis 1 has an air outlet 151 and a return air outlet 10, and the air outlet 151 and the return air outlet 10 are preferably distributed along the thickness direction of the chassis 1; the heat exchanger 2 is arranged in the chassis 1, and the heat exchanger 2 is located between the air outlet 151 and the return air outlet 10; preferably, the main part of the fan module 3 (such as the bracket 31, the drive motor 32 and the fan blade 33 described below) is arranged in the chassis 1, and the main part of the fan module 3 is located between the air outlet 151 and the return air outlet 10; the first connecting valve 4 and the second connecting valve 5 are both installed on the chassis 1, and the heat exchanger 2 is respectively connected with the first connecting valve 4 and the second connecting valve 5.

[0042] Combination Figure 5The chassis 1 is preferably designed in a split structure to facilitate the production of the chassis 1 and the storage of materials, and at the same time make the production of the chassis 1 more flexible and changeable. For example, in the present embodiment, the chassis 1 preferably includes a first side cover 11, a second side cover 12, a top cover 13, a water receiving tray 14, a panel 15 and a vertical plate 16; the first side cover 11 and the second side cover 12 are distributed along the length direction of the chassis 1; the top cover 13 is located at the top of the chassis 1, and the first end of the top cover 13 is connected to the first side cover 11, and the second end of the top cover 13 is connected to the second side cover; the water receiving tray 14 is located at the top of the chassis 1, so that the heat exchanger 2 is located above the water receiving tray 14, so that the condensed water condensed from the heat exchanger 2 can drip to the water receiving tray 14 for recovery, and discharged to the outside of the warehouse through the water receiving tray 14, the first end of the water receiving tray 14 is connected to the first side cover 11, and the second end of the water receiving tray 14 is connected to the second side cover 12. The first side cover 11, the second side cover 12, the top cover 13 and the water tray 14 form the above-mentioned return air port 10 at the rear of the chassis 1; the panel 15 is provided at the front of the chassis 1, the panel 15 is connected to the fan module 3 and the water tray 14 respectively, and the panel 15 is also connected to the first side cover 11 and / or the second side cover 12, and the above-mentioned air outlet 151 is formed on the panel 15. The vertical plate 16 is preferably installed at the end of the water tray 14. For example, in this embodiment, the vertical plate 16 is installed at one end of the water tray 14 close to the first side cover 11, and the first side cover 11 is provided with a first avoidance port 111, and the vertical plate 16 is located in the first avoidance port 111; in addition, the first connecting valve 4 and the second connecting valve 5 are installed on the vertical plate 16. It can be seen that through the structural design of the chassis 1, when the cold storage indoor unit 100 is operated, there is basically no need to disassemble the first connecting valve 4 and / or the second connecting valve 5, and therefore there is no need to recover the refrigerant of the cold storage air conditioner equipped with the cold storage indoor unit 100, thereby making the maintenance of the cold storage indoor unit 100 more convenient and easy to operate.

[0043] Combination Figure 6 The heat exchanger 2 includes a plurality of fins 21 and a heat exchange tube assembly 22. The plurality of fins 21 are distributed along the thickness direction thereof. Preferably, the plurality of fins 21 are distributed along the length direction of the chassis 1. The heat exchange tube assembly 22 penetrates the fins 21, so that the heat exchange tube assembly 22 can fully exchange heat between the refrigerant flowing through itself and the air in the warehouse through the fins 21, thereby improving the heat exchange effect of the heat exchanger 2. Preferably, the spacing between two adjacent fins 21 is less than or equal to 2 mm, so that under the condition of achieving the same required heat exchange area, the volume of the heat exchanger 2 can be reduced by more than half compared with the volume of the heat exchanger of the conventional cold storage indoor unit, thereby making the volume of the cold storage indoor unit 100 smaller, which is conducive to improving the utilization rate of the warehouse equipped with the cold storage indoor unit 100.

[0044] Combination Figures 7 to 9The heat exchange tube assembly 22 includes a multi-component flow tube 221, an input tube 222 and an output tube 223. The multi-component flow is distributed along the length direction of the fin 21, and the flow tube 221 preferably extends in a meandering shape and passes through each fin 21, so as to improve the heat exchange effect of the cold storage indoor unit 100. It can be seen that the design of the flow tube 221 can effectively improve the uniformity of the refrigerant heat exchange, thereby making the evaporation temperature of the heat exchanger 2 more uniform.

[0045] The input pipe 222 has a first inlet end 22211 and a plurality of branch outlet ends 22241, and the plurality of branch outlet ends 22241 correspond to the plurality of manifolds 221 one by one, so that one branch outlet end 22241 is connected to the second inlet end 2211 of the corresponding manifold 221. Figure 8 As shown, the output tube 223 has a first outlet end 2231 and multiple branch inlet ends 2232 , and the multiple branch inlet ends 2232 correspond to the multiple groups of manifolds 221 one by one, so that one branch inlet end 2232 is connected to the second outlet end 2212 of the corresponding group of manifolds 221 .

[0046] Preferably, the heat exchanger 2 further includes an electronic pressure regulating valve 23 and a capillary tube 24. Fig. 9 As shown, the input pipe 222 includes an input section 2221, a relay section 2222, a main section 2223 and a plurality of branch sections 2224. Among them, the first end of the input section 2221 is the first inlet end 22211 mentioned above, and the second end of the input section 2221 is connected to the inlet of the electronic pressure regulating valve 23; the first end of the relay section 2222 is connected to the outlet of the electronic pressure regulating valve 23, and the second end of the relay section 2222 is connected to the main section 2223; the first end of the branch section 2224 is connected to the main section 2223, and the second end of the branch section 2224 is the above-mentioned diversion outlet end 22241; the first end of the capillary tube 24 is connected to the input section 2221, and the second end of the capillary tube 24 is connected to the relay section 2222. This design enables the heat exchanger 2 to cooperate with refrigerants, compressors, etc. to achieve low-temperature and ultra-low-temperature refrigeration, thereby improving the refrigeration range and refrigeration capacity of the heat exchanger 2.

[0047] For example, when the cold storage indoor unit 100 works in a relatively low temperature or low temperature working environment, the opening of the electronic pressure regulating valve 23 can be controlled to make the pressure of the refrigerant in the input section 2221 and the relay section 2222 consistent or close. At this time, the refrigerant does not flow through the capillary tube 24; when the cold storage indoor unit 100 works in an ultra-low temperature working environment, the opening of the electronic pressure regulating valve 23 can be controlled to make the refrigerant pressure in the input section 2221 greater than the refrigerant pressure in the relay section 2222, thereby causing a part of the refrigerant in the input section 2221 to flow to the relay section 2222 through the electronic pressure regulating valve 23, and the other part The refrigerant flows to the relay section 2222 through the capillary 24, and the refrigerant flowing through the capillary 24 will be further throttled by the capillary 24 to further reduce the pressure and temperature of the refrigerant, so that when the refrigerant flowing through the capillary 24 and the refrigerant flowing through the electronic pressure regulating valve 23 merge in the relay section 2222, the pressure and temperature of the merged refrigerant are lower, so that the heat exchanger 2 has a lower evaporation temperature; at the same time, since the refrigerant in the input section 2221 enters the relay section 2222 through the electronic pressure regulating valve 23 and the capillary 24 respectively, it can ensure that the flow of the refrigerant can meet the evaporation temperature requirement of the heat exchanger 2. When the refrigerant flows into the relay section 2222, the combined refrigerant will flow to each branch section 2224 through the main section 2223, and then flow to each branch pipe 221 through each branch section 2224, and then flow to the output pipe 223 through the branch pipe 221 and the branch inlet end 2232, and finally discharge from the heat exchanger 2 through the first outlet end 2231 of the output pipe 223.

[0048] The fan module 3 preferably includes a bracket 31, a drive motor 32, a fan blade 33 and a mesh cover 34. The bracket 31 is installed in the chassis 1, and the bracket 31 is preferably connected to the panel 15, the water tray 14 and the heat exchanger 2 respectively to improve the stability of the bracket 31 after installation; preferably, the top of the bracket 31 is adjacent to the top cover 13.

[0049] The driving motor 32 is mounted on the bracket 31; preferably, a first shock absorbing element is provided between the driving motor 32 and the bracket 31, a second shock absorbing element is provided between the bracket 31 and the top cover 13, and a third shock absorbing element is provided between the bracket 31 and the water receiving tray 14. The first shock absorbing element, the second shock absorbing element and the third shock absorbing element can absorb the vibration generated during the operation of the fan module 3 to further reduce the vibration and noise generated during the operation of the fan module 3; wherein, the first shock absorbing element, the second shock absorbing element and the third shock absorbing element can preferably adopt shock absorbing rubber pads or shock absorbing sponges.

[0050] The fan blades 33 are mounted on the drive shaft of the drive motor 32, so that the drive motor 32 can drive the fan blades 33 to deliver air to the air outlet 151. Preferably, the fan blades 33 are preferably made of low-temperature resistant materials, such as polyethylene (PE), polypropylene (PP), polytetrafluoroethylene (PRFE), polyamide (PA) or polyetheretherketone (PEEK) materials, so that the fan blades 33 are light and can be better applied to the low temperature and ultra-low temperature environment in the warehouse, so as to ensure the service life and working reliability of the fan blades 33, and at the same time, it is also conducive to reducing the weight of the cold storage indoor unit 100.

[0051] The mesh cover 34 is mounted on the panel 15 of the chassis 1, and the mesh cover 34 is located at the air outlet 151 and covers the air outlet 151. Preferably, the mesh cover 34 has a guide strip, so that the mesh cover 34 can better discharge the wind blown out by the fan blades 33 evenly into the warehouse. Among them, the mesh cover 34 is preferably made of low-temperature resistant materials, such as polyethylene, polypropylene, polytetrafluoroethylene, polyamide or polyetheretherketone materials, so that the mesh cover 34 is light in weight and can be better applied to the low temperature and ultra-low temperature environment in the warehouse, so as to ensure the service life and working reliability of the mesh cover 34, and is conducive to further reducing the weight of the cold storage indoor unit 100.

[0052] The number of panels 15 is preferably between 1 and 8; the number of fan modules 3 is between 1 and 8, and one fan module 3 is matched with one panel 15. This design allows the cold storage indoor unit 100 to be set to different specifications, so that the cold storage indoor unit 100 can be applied to warehouses of different sizes, and can ensure that the warehouse space occupied by the cold storage indoor unit 100 is better reduced while meeting the refrigeration demand in the warehouse. For example, in this embodiment, the number of panels 15 is 2, and the number of fan modules 3 is 2.

[0053] Combination Fig.10The first connecting valve 4 includes a first valve body 41, a first flow channel 411 is arranged in the first valve body 41, the output end of the first flow channel 411 is connected to the first inlet end 22211 of the heat exchange tube assembly 22, and the first valve body 41 is provided with a first interface 412 at the output end of the first flow channel 411, so that when the cold storage indoor unit 100 is connected to the first copper pipe connected to the cold storage outdoor unit, it is more convenient and easy to operate. Preferably, the first valve body 41 has a first valve hole 413, and the first valve hole 413 is connected to the first flow channel 411; the first connecting valve 4 also includes a first valve core 42 and a first adjusting rod 43, the first valve core 42 can be slidably installed in the first valve hole 413, the first adjusting rod 43 is connected to the first valve core 42, and the first adjusting rod 43 is used to adjust the first valve core 42 to extend into or withdraw from the first flow channel 411, so as to adjust the flow cross-sectional area of ​​the first flow channel 411 by adjusting the position of the first valve core 42 in the first flow channel 411, thereby realizing the opening adjustment of the first connecting valve 4, so that the first connecting valve 4 can adjust the flow rate and pressure of the refrigerant input to the heat exchanger 2, enriching the function of the first connecting valve 4, and improving the practicality of the first connecting valve 4.

[0054] Combination Fig.11 The second connecting valve 5 has a second valve body 51, and a second flow channel 511 is arranged in the second valve body 51. The input end of the second flow channel 511 is connected to the first outlet end 2231 of the heat exchange tube assembly 22. The second valve body 51 is provided with a second interface 512 at the output end of the second flow channel 511, so that when the cold storage indoor unit 100 is connected to the second copper pipe connected to the cold storage outdoor unit, it is more convenient and easy to operate. Preferably, the second valve body 51 has a second valve hole 513, and the second valve hole 513 is connected to the second flow channel 511; the second connecting valve 5 also includes a second valve core 52 and a second adjusting rod 53, the second valve core 52 can be slidably installed in the second valve hole 513, the second adjusting rod 53 is connected to the second valve core 52, and the second adjusting rod 53 can adjust the second valve core 52 to extend into or withdraw from the second flow channel 511, so as to adjust the flow cross-sectional area of ​​the second flow channel 511 by adjusting the position of the second valve core 52 in the second flow channel 511, thereby realizing the opening adjustment of the second connecting valve 5, so that the second connecting valve 5 can adjust the flow rate and pressure of the refrigerant input to the heat exchanger 2, enriching the function of the second connecting valve 5, and improving the practicality of the second connecting valve 5.

[0055] It can be seen that by providing the first connecting valve 4 and the second connecting valve 5, when the cold storage indoor unit 100 is connected to the copper pipe connected to the cold storage outdoor unit, there is no need to use welding equipment for welding operations, so that the assembly between the cold storage indoor unit 100 and the copper pipe is more convenient and easy to operate, and the installation is faster and the installation cost is lower. At the same time, the firmness, airtightness and reliability of the connection between the cold storage indoor unit 100 and the copper pipe can be ensured.

[0056] Furthermore, the second valve body 51 also has an air hole 514, which is connected to the second flow channel 511, and the second valve core 52 can block the connection between the air hole 514 and the second flow channel 511; the second connecting valve 5 also includes a valve core 54, which is installed in the air hole 514, and the ejector pin 541 of the valve core 54 is located at the opening of the air hole 514. By arranging the air hole 514 on the valve body and arranging the valve core 54 in the air hole 514, when the cold storage indoor unit 100 needs to be repaired, it is more convenient to drain and evacuate the refrigerant, so that it is not necessary to move to the cold storage outdoor unit for operation, which greatly improves the convenience of repairing the cold storage indoor unit 100; in addition, if the conditions are met, the refrigerant can be added at the cold storage indoor unit 100 through the second connecting valve 5.

[0057] Furthermore, preferably, the number of vertical plates 16 of the chassis 1 can be set to two, and one vertical plate 16 is installed at one end of the water receiving tray 14, correspondingly, a second avoidance port is provided on the second side cover 12, and the vertical plate 16 located at the second side cover 12 is arranged in the second avoidance port, and further, each vertical plate 16 is provided with a first connecting valve 4 and a second connecting valve 5, the heat exchange tube assembly 22 has two first inlet ends 22211 and two first outlet ends 2231, and the two first inlet ends 22211 correspond one-to-one with the two first connecting valves 4, and the two first outlet ends 2231 correspond one-to-one with the two second connecting valves 5; this design enables the cold storage indoor unit 100 to adapt to a more complex installation environment, makes the arrangement of the copper pipes connecting the cold storage outdoor unit more flexible and changeable, and makes the installation of the cold storage air conditioner equipped with the cold storage indoor unit 100 more convenient and easy to operate.

[0058] Cold storage air conditioning example

[0059] The cold storage air conditioner also includes a cold storage indoor unit and the cold storage indoor unit in the above cold storage indoor unit embodiment, wherein the cold storage indoor unit is connected to the copper pipe connected to the cold storage outdoor unit through a first connecting valve and a second connecting valve. By setting the above cold storage indoor unit, the cold storage air conditioner does not need to use welding equipment for welding during the installation of the cold storage air conditioner, making the assembly between the cold storage indoor unit and the copper pipe more convenient and easy to operate, and the installation is faster and the installation cost is lower, and at the same time, the firmness, airtightness and reliability of the connection between the cold storage indoor unit and the copper pipe can be ensured.

[0060] Cold storage example

[0061] The cold storage includes a storeroom and the cold storage air conditioner in the cold storage air conditioner embodiment; wherein the cold storage indoor unit is installed in the storeroom. By arranging the cold storage air conditioner, the cold storage does not need to use welding equipment for welding during its installation, making the assembly between the cold storage indoor unit and the copper pipe more convenient and easy to operate, and the installation is faster and the installation cost is lower. At the same time, the firmness, airtightness and reliability of the connection between the cold storage indoor unit and the copper pipe can be ensured.

[0062] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Cold storage indoor unit, including A chassis, wherein the chassis has an air outlet and an air return outlet; A heat exchanger, the heat exchanger is arranged in the chassis, the heat exchanger is located between the air outlet and the return air outlet, the heat exchanger has a plurality of fins and a heat exchange tube assembly, the plurality of fins are distributed along the thickness direction thereof, and the heat exchange tube assembly penetrates the fins; A fan module, the fan module is connected to the chassis, and the fan module supplies air to the outside of the chassis through the air outlet; It is characterized in that The cold storage indoor unit also includes: a first connecting valve, the first connecting valve comprising a first valve body, a first flow channel being disposed in the first valve body, an output end of the first flow channel being butted against a first inlet end of the heat exchange tube assembly, and the first valve body being provided with a first interface at the output end of the first flow channel; The second connecting valve has a second valve body, a second flow channel is arranged in the second valve body, the input end of the second flow channel is connected to the first outlet end of the heat exchange tube assembly, and the second valve body is provided with a second interface at the output end of the second flow channel.

2. The cold storage indoor unit according to claim 1, characterized in that: The first connecting valve further comprises a first valve core and a first adjusting rod, the first valve body has a first valve hole, the first valve hole is communicated with the first flow channel, the first valve core is slidably installed in the first valve hole, the first adjusting rod is connected to the first valve core, and the first adjusting rod can adjust the first valve core to extend into or withdraw from the first flow channel; The second connecting valve also includes a second valve core and a second adjusting rod. The second valve body has a second valve hole. The second valve hole is connected to the second flow channel. The second valve core can be slidably installed in the second valve hole. The second adjusting rod is connected to the second valve core. The second adjusting rod can adjust the second valve core to extend into or withdraw from the second flow channel.

3. The cold storage indoor unit according to claim 2, characterized in that: The second valve body further has an air hole, the air hole is connected to the second flow channel, and the second valve core can block the connection between the air hole and the second flow channel; The second connecting valve further includes a valve core installed in the air hole.

4. The cold storage indoor unit according to claim 3, characterized in that: The chassis comprises: a first side cover; A second side cover, wherein the first side cover and the second side cover are distributed along the length direction of the chassis; A top cover, the top cover is located at the top of the chassis, and the top cover is connected between the first side cover and the second side cover; A water receiving tray, the water receiving tray is located at the bottom of the chassis, the water receiving tray is connected between the first side cover and the second side cover, and the first side cover, the second side cover, the top cover and the water receiving tray form the return air outlet at the rear of the chassis; A panel, the panel is located at the front of the chassis, the panel is connected to the first side cover, the second side cover and the water receiving tray respectively, and the air outlet is formed on the panel; A vertical plate is connected to one end of the water receiving tray, a first avoidance opening is provided on the first side cover, the vertical plate is located in the first avoidance opening, and the first connecting valve and the second connecting valve are installed on the vertical plate.

5. The cold storage indoor unit according to claim 4, characterized in that: There are two vertical plates, one of which is installed at one end of the water receiving tray, the second side cover is provided with a second avoidance opening, and the vertical plate located at the second side cover is arranged in the second avoidance opening; Each of the vertical plates is provided with a first connecting valve and a second connecting valve, and the heat exchange tube assembly has two first inlet ends and two first outlet ends, the two first inlet ends correspond one-to-one with the two first connecting valves, and the two first outlet ends correspond one-to-one with the two second connecting valves.

6. The cold storage indoor unit according to any one of claims 1 to 5, characterized in that: The heat exchange tube assembly comprises: Multiple groups of manifolds, the multiple groups of manifolds are distributed in the length direction of the fins, the manifolds are in a winding shape and penetrate the fins; An input pipe, wherein the input pipe has the first inlet end and a plurality of flow-dividing outlet ends, the plurality of flow-dividing outlet ends correspond one-to-one to a plurality of groups of flow-dividing pipes, and one of the flow-dividing outlet ends is butted against a second inlet end of a group of flow-dividing pipes; The output tube has the first outlet end and a plurality of diversion inlet ends, the plurality of diversion inlet ends correspond one-to-one to a plurality of groups of diversion tubes, and one diversion inlet end is connected to a second outlet end of a group of diversion tubes.

7. The cold storage indoor unit according to claim 6, characterized in that: The heat exchanger also includes an electronic pressure regulating valve and a capillary tube; The input pipe includes an input section, a relay section, a main section and multiple branch sections. The first end of the input section is the first inlet end, the second end of the input section is connected to the inlet of the electronic pressure regulating valve, the first end of the relay section is connected to the outlet of the electronic pressure regulating valve, the second end of the relay section is connected to the main section, the first end of the branch section is connected to the main section, the second end of the branch section is the diversion outlet end, the first end of the capillary is connected to the input section, and the second end of the capillary is connected to the relay section.

8. The cold storage indoor unit according to claim 7, characterized in that: The fan module is installed in the chassis, and the fan module includes a bracket, a drive motor, a fan blade and a mesh cover, the bracket is connected to the chassis, the drive motor is installed on the bracket, the fan blade is installed on the drive shaft of the drive motor, and the mesh cover is installed on the chassis and covers the air outlet; A first shock absorbing member is provided between the bracket and the motor, and a second shock absorbing member is provided between the bracket and the chassis; The number of the air outlets is between 1 and 8, the number of the fan modules is between 1 and 8, and one fan module is arranged correspondingly to one air outlet.

9. Cold storage air conditioner, characterized in that, The cold storage air conditioner also includes a cold storage indoor unit as described in any one of claims 1 to 8.

10. A cold storage, including a storeroom, characterized in that: It also includes the cold storage air conditioner as described in claim 9, wherein the cold storage indoor unit is installed in the warehouse.

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