A structure of a combined heating and cooling refrigeration unit
By introducing the switching between refrigeration solenoid valves and defrosting solenoid valves in the refrigeration unit of the refrigeration truck, a high-efficiency refrigeration and heating cycle system is constructed, which solves the problem that the refrigeration unit of the refrigeration truck only has a refrigeration function. It realizes the switching between refrigeration and heating functions in multiple temperature zones, adapts to the diverse needs of cargo transportation, and ensures the quality and safety of goods.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI JIANGLING GRP SPECIAL VEHICLE CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-06-30
AI Technical Summary
Existing refrigeration units in refrigerated trucks only have a cooling function, which is insufficient to meet the complex needs of multiple temperature zones and cannot achieve both cooling and heating simultaneously.
A cooling and heating integrated refrigeration unit structure was designed, including a compressor, a condenser core, and an evaporator core. By switching between a refrigeration solenoid valve and a defrost solenoid valve, an efficient refrigeration and heating cycle system is constructed to achieve rapid switching and stable output of refrigeration and heating functions.
It enables refrigerated trucks to quickly switch between refrigeration and heating functions in multiple temperature zones and maintain stable output, adapting to the diverse transportation needs of goods and ensuring the quality and safety of goods.
Smart Images
Figure CN224434732U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of refrigeration unit technology for refrigerated trucks, and particularly to a structure for an integrated heating and cooling refrigeration unit. Background Technology
[0002] Refrigerated trucks, as key equipment for transporting frozen or fresh goods, are widely used in various fields such as frozen foods, dairy products, fruits and vegetables, vaccines and pharmaceuticals. In recent years, with the increasing variety of transported goods and the different temperature requirements of different goods, the demand for multi-temperature zone units has emerged, which urgently requires that each temperature zone of a refrigerated truck can simultaneously achieve cooling and heating.
[0003] However, existing refrigeration units in refrigerated trucks only have a cooling function, which is insufficient to meet the complex requirement of multiple temperature zones.
[0004] Therefore, it is necessary to propose a refrigeration unit structure that integrates heating and cooling to better adapt to the transportation of diverse goods and ensure the quality and safety of goods, which has become an important technical problem that urgently needs to be solved. Utility Model Content
[0005] This application provides a structure for an integrated heating and cooling refrigeration unit, which aims to solve the problem that existing refrigeration units for refrigerated trucks only have a cooling function and cannot meet the complex requirements of multiple temperature zones.
[0006] To achieve the above objectives, this application proposes a combined heating and cooling refrigeration unit structure, including an outdoor compressor, an outdoor condenser core, and an indoor evaporator core, and further including: a refrigeration solenoid valve, wherein the compressor is connected to the condenser core through an outlet pipe, and the refrigeration solenoid valve is installed on the outlet pipes of the compressor and the condenser core; a defrost solenoid valve, wherein the compressor is connected to the evaporator core through an outlet pipe, and the defrost solenoid valve is installed on the outlet pipes of the compressor and the evaporator core; and a suction pressure regulating valve, wherein the evaporator core is connected to the compressor through a return pipe, and the suction pressure regulating valve is installed on the return pipes of the evaporator core and the compressor.
[0007] In some embodiments, the device further includes: a thermal expansion valve, wherein the condensing core is connected to the evaporating core through an outlet pipe, and the thermal expansion valve is provided on the outlet pipes of the condensing core and the evaporating core; a first one-way valve, wherein the first one-way valve is provided on the outlet pipes of the condensing core and the thermal expansion valve; and a second one-way valve, wherein the defrosting solenoid valve is connected to the thermal expansion valve through an outlet pipe, and the second one-way valve is provided on the outlet pipes of the thermal expansion valve and the defrosting solenoid valve.
[0008] In some embodiments, the system further includes a gas-liquid separator, which is disposed on the return pipe of the evaporator core and the suction pressure regulating valve.
[0009] In some embodiments, the device further includes: a liquid reservoir, wherein the liquid reservoir is disposed on the outflow pipe of the condenser core and the evaporator core; a dryer, wherein the dryer is disposed on the outflow pipe of the liquid reservoir and the evaporator core; and a sight glass, wherein the sight glass is disposed on the outflow pipe of the dryer and the evaporator core.
[0010] In some embodiments, the system further includes: an oil-gas separator, wherein the compressor is connected to the oil-gas separator via an outlet pipe, the oil-gas separator is connected to a refrigeration solenoid valve via an outlet pipe, and the oil-gas separator is connected to a defrost solenoid valve via an outlet pipe.
[0011] In some embodiments, the device further includes: a regenerator, wherein the regenerator is provided on the sight glass and the outflow pipe of the evaporator core, and the suction pressure regulating valve and the return pipe of the evaporator core pass through the regenerator.
[0012] This application proposes a combined cooling and heating refrigeration unit structure, including an outdoor compressor, an outdoor condenser core, and an indoor evaporator core. It also includes: a cooling solenoid valve, with the compressor connected to the condenser core via an outlet pipe, and the outlet pipes of the compressor and condenser core equipped with the cooling solenoid valve; a defrost solenoid valve, with the compressor connected to the evaporator core via an outlet pipe, and the outlet pipes of the compressor and evaporator core equipped with the defrost solenoid valve; and a suction pressure regulating valve, with the evaporator core connected to the compressor via a return pipe, and the return pipes of the evaporator core and compressor equipped with the suction pressure regulating valve. In cooling mode, the cooling solenoid valve is open, and the defrost solenoid valve is closed. The high-temperature, high-pressure gas from the compressor liquefies in the condenser core and then vaporizes in the evaporator core, absorbing heat and lowering the indoor temperature. In heating mode, the cooling solenoid valve is closed, and the defrost solenoid valve is open. The high-temperature, high-pressure gas from the compressor enters the evaporator core, dissipates heat through the evaporator core, and the suction pressure regulating valve controls the compressor's return gas pressure. The integrated heating and cooling refrigeration unit described in this application constructs a highly efficient cooling and heating cycle system, enabling rapid switching and stable output of cooling and heating functions. This better adapts to the transportation of diverse goods, ensuring cargo quality and safety. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:
[0014] Figure 1 This is a schematic diagram of a cooling and heating integrated refrigeration unit structure according to an embodiment of this application;
[0015] Figure 2This is a front view of the casing of a combined heating and cooling refrigeration unit according to one embodiment of this application;
[0016] Figure 3 This is a top view of the fuselage of a combined heating and cooling refrigeration unit according to an embodiment of this application;
[0017] Figure 4 This is a left view of the body of a cooling and heating integrated refrigeration unit according to an embodiment of this application.
[0018] In the diagram: 1. Body; 2. Evaporator core; 201. First evaporator core; 202. Second evaporator core; 3. Temperature sensor; 4. Balance tube; 5. Regenerator; 6. Low-pressure switch; 7. High-pressure switch; 8. Gas-liquid separator; 9. Suction pressure regulating valve; 10. Compressor; 11. Oil-gas separator; 12. Refrigeration solenoid valve; 13. Condenser core; 14. Defrosting solenoid valve; 15. Second check valve; 16. First check valve; 17. Charging valve; 18. Liquid receiver; 19. Dryer; 20. Sight glass; 21. Thermal expansion valve; 22. Inlet pipe; 23. Outlet pipe. Detailed Implementation
[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0021] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.
[0022] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.
[0023] See Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this application proposes a cooling and heating integrated refrigeration unit structure, including an outdoor compressor 10, an outdoor condenser core 13, and an indoor evaporator core 2. It also includes: a refrigeration solenoid valve 12, with the compressor 10 connected to the condenser core 13 via an outlet pipe, and the refrigeration solenoid valve 12 installed on the outlet pipes of the compressor 10 and the condenser core 13; a defrost solenoid valve 14, with the compressor 10 connected to the evaporator core 2 via an outlet pipe, and the defrost solenoid valve 14 installed on the outlet pipes of the compressor 10 and the evaporator core 2; and a suction pressure regulating valve 9, with the evaporator core 2 connected to the compressor 10 via a return pipe, and the suction pressure regulating valve 9 installed on the return pipes of the evaporator core 2 and the compressor 10.
[0024] The compressor 10 is the heart of the integrated cooling and heating refrigeration unit. It draws in low-temperature, low-pressure refrigerant gas, compresses it, and discharges high-temperature, high-pressure refrigerant gas, providing power for the cooling or heating cycle. The condenser core 13 is a type of heat exchanger that converts gas or vapor into liquid. The evaporator core 2 is also a type of heat exchanger, exchanging heat with the outside air to achieve cooling or heating effects.
[0025] In this embodiment, there are two evaporator cores 2, namely a first evaporator core 201 and a second evaporator core 202. The second evaporator core 202 is connected to the refrigeration solenoid valve 12, and the first evaporator core 201 is connected to the defrost solenoid valve 14. Through the above structural design of the evaporator core 2, it is beneficial to carry out coordinated operation of cooling and heating, and to better control the independent temperature of multiple temperature zones.
[0026] The unit is located outdoors and includes a body 1, a refrigeration solenoid valve 12, and a defrost solenoid valve 14.
[0027] Specifically, in cooling mode, the cooling solenoid valve 12 is open and the defrosting solenoid valve 14 is closed. The high-temperature, high-pressure gas from the compressor 10 liquefies in the condensing core 13 and then vaporizes in the evaporating core 2, absorbing heat and lowering the indoor temperature. In heating mode, the cooling solenoid valve 12 is closed and the defrosting solenoid valve 14 is open. The high-temperature, high-pressure gas from the compressor 10 enters the evaporating core 2, dissipates heat through the evaporating core 2, and the return gas pressure of the compressor 10 is controlled by the suction pressure regulating valve 9. The integrated cooling and heating refrigeration unit of this application constructs an efficient cooling and heating cycle system, realizing rapid switching and stable output of cooling and heating functions. This better adapts to the transportation of diverse goods and ensures the quality and safety of the goods.
[0028] See Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, it further includes: a thermal expansion valve 21, with the condensing core 13 connected to the evaporating core 2 via an outlet pipe, and the thermal expansion valve 21 installed on the outlet pipes of the condensing core 13 and the evaporating core 2; the thermal expansion valve 21 controls the opening of the expansion valve by the temperature of the gas discharged from the evaporating core 2 to change the flow rate; the thermal expansion valve 21 is equipped with a temperature sensing bulb 3, which is wrapped around the outer wall of the outlet pipe of the evaporating core 2. The thermal expansion valve 21 is also equipped with a balancing pipe 4, which is used to balance the internal and external pressures of the thermal expansion valve 21 to ensure that the thermal expansion valve 21 works normally. A first one-way valve 16 is installed on the outlet pipes of the condensing core 13 and the thermal expansion valve 21; a second one-way valve 15 is installed on the outlet pipes of the thermal expansion valve 21 and the defrosting solenoid valve 14. The high-temperature, high-pressure gas exiting the compressor 10 is split into two paths after passing through the defrost solenoid valve 14. One path directly enters the first evaporation core 201 of the evaporator core 2, while the other path flows through the expansion valve and the two paths merge into the second evaporation core 202 of the evaporator core 2. Heating is achieved through heat dissipation from the evaporator core 2. The first one-way valve 16 and the second one-way valve 15 are used to control the flow direction, which is beneficial for coordinated cooling and heating operation and for rapid switching and stable output of cooling and heating functions.
[0029] See Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, a gas-liquid separator 8 is further included, with the gas-liquid separator 8 installed on the return pipe of the evaporator core 2 and the suction pressure regulating valve 9. The gas-liquid separator 8 is used to efficiently separate the gaseous refrigerant from the liquid refrigerant, preventing the liquid refrigerant from entering the compressor 10, thereby protecting the compressor 10.
[0030] In this embodiment, the compressor 10 is provided with a discharge pipe 23 and a discharge pipe 22. The discharge pipe 23 is a high-pressure pipe and the discharge pipe 22 is a low-pressure pipe. A low-pressure switch 6 is provided on the return pipe between the gas-liquid separator 8 and the evaporator core 2. The low-pressure switch 6 is used to protect the compressor, the gas-liquid separator 8 and the suction pressure regulating valve 9. When the return gas pressure is too high, the low-pressure switch 6 is closed.
[0031] See Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the system further includes: a liquid receiver 18, which is installed on the outflow pipes of the condenser core 13 and the evaporator core 2; the liquid receiver 18 is used to store liquid refrigerant; a dryer 19, which is installed on the outflow pipes of the liquid receiver 18 and the evaporator core 2; the dryer 19 is used to absorb moisture in the system and filter impurities; and a sight glass 20, which is installed on the outflow pipes of the dryer 19 and the evaporator core 2. The sight glass 20 is used to observe the fluid state within the outflow pipes.
[0032] See Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, it further includes: an oil-gas separator 11, with the compressor 10 connected to the oil-gas separator 11 via an outlet pipe, the oil-gas separator 11 connected to a refrigeration solenoid valve 12 via an outlet pipe, and the oil-gas separator 11 connected to a defrost solenoid valve 14 via an outlet pipe. This separates the refrigeration oil from the gaseous refrigerant, allowing the refrigeration oil to flow back to the compressor 10.
[0033] In this embodiment, a high-pressure switch 7 is provided on the discharge pipe 23 of the compressor 10 and the outflow pipe of the oil-gas separator 11. The high-pressure switch 7 is closed when the discharge gas pressure is too low.
[0034] See Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, it further includes: a regenerator 5, which is installed on the outflow pipe of the sight glass 20 and the evaporator core 2, and the suction pressure regulating valve 9 and the return pipe of the evaporator core 2 pass through the regenerator 5. During refrigeration, the regenerator 5 uses the refrigerant vapor from the evaporator core 2 to cool the high-pressure liquid before it enters the evaporator, thus subcooling the refrigerant liquid.
[0035] In this embodiment, a charging valve 17 is provided on the outflow pipe of the defrosting solenoid valve 14 and the first evaporator core 201, and a charging valve 17 is provided on the return pipe of the low-pressure switch 6 and the pressure separator. The charging valve 17 is used to charge refrigerant.
[0036] In this application, the structures of the evaporator core 2, temperature sensing bulb 3, balance tube 4, regenerator 5, low-pressure switch 6, high-pressure switch 7, gas-liquid separator 8, suction pressure regulating valve 9, compressor 10, oil-gas separator 11, refrigeration solenoid valve 12, condenser core 13, defrost solenoid valve 14, second check valve 15, first check valve 16, charging valve 17, liquid receiver 18, dryer 19, sight glass 20, and thermostatic expansion valve 21 are all mature existing technologies. The improvement of this application lies in the improvement of the refrigeration cycle system. The specific structure of the above-mentioned equipment or valve body is not specifically limited here.
[0037] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.
Claims
1. A combined heating and cooling refrigeration unit structure, comprising an outdoor compressor (10), an outdoor condenser core (13), and an indoor evaporator core (2), characterized in that, Also includes: A refrigeration solenoid valve (12) is provided on the compressor (10) and the condenser core (13) through an outlet pipe. The compressor (10) and the condenser core (13) are connected by the refrigeration solenoid valve (12). The defrost solenoid valve (14) is provided on the compressor (10) and the evaporator core (2) through the outflow pipe. The suction pressure regulating valve (9) is provided on the evaporator core (2) and the compressor (10) through the return pipeline.
2. The integrated heating and cooling refrigeration unit structure according to claim 1, characterized in that, Also includes: A thermal expansion valve (21) is provided on the outlet pipes of the condensing core (13) and the evaporating core (2). The first one-way valve (16) is provided on the outlet pipe of the condenser core (13) and the thermal expansion valve (21). The second check valve (15) is connected to the thermostatic expansion valve (21) through the outflow pipe. The second check valve (15) is provided on the outflow pipe of the thermostatic expansion valve (21) and the thermostatic expansion valve (21) and the outflow pipe of the thermostatic expansion valve (14).
3. The integrated heating and cooling refrigeration unit structure according to claim 1, characterized in that, Also includes: The gas-liquid separator (8) is installed on the return pipe of the evaporation core (2) and the suction pressure regulating valve (9).
4. The structure of a combined heating and cooling refrigeration unit according to claim 2, characterized in that, Also includes: The liquid reservoir (18) is provided on the outflow pipe of the condenser core (13) and the evaporator core (2). Dryer (19) is provided on the outflow pipe of the liquid reservoir (18) and the evaporation core (2). Sight glass (20) is provided on the outflow pipe of the dryer (19) and the evaporation core (2).
5. The structure of a combined heating and cooling refrigeration unit according to claim 1, characterized in that, Also includes: The compressor (10) is connected to the oil-gas separator (11) through an outflow pipe. The oil-gas separator (11) is connected to the refrigeration solenoid valve (12) through an outflow pipe. The oil-gas separator (11) is connected to the defrost solenoid valve (14) through an outflow pipe.
6. The integrated heating and cooling refrigeration unit structure according to claim 4, characterized in that, Also includes: The regenerator (5) is installed on the outflow pipe of the sight glass (20) and the evaporation core (2), and the suction pressure regulating valve (9) and the return pipe of the evaporation core (2) pass through the regenerator (5).