Refrigerating system utilizing low temperature of underground shallow layer

Abstract

The utility model relates to the technical field of underground shallow cold source summer refrigeration, in particular to an underground shallow low-temperature refrigeration system, which comprises a softened water tank, a buried pipe, a circulating pump and a building heating system, the outlet of the softened water tank is communicated with the inlet of the buried pipe through a pipeline, the buried pipe is buried at the underground shallow terrestrial heat, and the circulating pump is communicated with the circulating pump. An outlet of the buried pipe is communicated with an inlet of the building heating system through a pipeline, a circulating pump located on the ground is arranged between the buried pipe and the building heating system, an outlet of the building heating system is communicated with an inlet of the softened water tank through a pipeline, and at the moment, the temperature of water flowing out of the outlet of the buried pipe is lower than the ground temperature. Water is pumped into the building heating system by the circulating pump for refrigeration in summer, and water discharged from an outlet of the building heating system absorbs heat under the action of ground temperature and enters the softened water tank; according to the system, under the action of the circulating pump, water circulates in the softened water tank, the buried pipe and the building heating system, and the temperature of the ground is conveyed to an underground shallow layer to be stored, so that heat is supplemented for heating of the soil source heat pump in winter.

Description

Technical Field

[0001] The utility model relates to the technical field of summer refrigeration with an underground shallow cold source, in particular to a refrigeration system utilizing a shallow underground low temperature. Background Art

[0002] In the northwest region, the summer temperature is hot and the climate is dry, so indoor refrigeration equipment must be turned on to create a comfortable environment;

[0003] Shallow geothermal is a way of clean heating (within 200m underground, it is considered shallow geothermal). Drill holes in the ground to bury single U-tubes or double U-tubes, and then connect them in parallel (the buried pipes need to be compacted) to the bottom of the header to provide heat source for the soil source pump for winter heating. The operating cost is low, but its disadvantage is that the temperature of shallow geothermal is very low. In the northwest plateau area, the temperature of shallow geothermal underground is about 9-16℃. If geothermal heating is used for two to three years, the underground temperature will decay and form a cold pool. In summer, solar heat or air heat is needed to supplement the heat of shallow geothermal underground to balance the underground temperature.

[0004] Whether using refrigeration equipment or supplementing the shallow underground geothermal heat through solar thermal energy or air thermal energy, operating costs are required. If the shallow underground low temperature can be connected to the building's heating system to circulate it, it can not only cool the indoor temperature, but also supplement the shallow underground geothermal heat, thereby reducing energy loss and lowering costs. Utility Model Content

[0005] The purpose of the utility model is to provide a refrigeration system utilizing shallow underground low temperature, which is used to solve the problems mentioned in the prior art in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shallow underground low-temperature refrigeration system, comprising a soft water tank, a buried pipe, a circulating pump and a building heating system, wherein the outlet of the soft water tank is connected to the inlet of the buried pipe through a pipeline, the buried pipe is buried in a shallow underground geothermal area, the outlet of the buried pipe is connected to the inlet of the building heating system through a pipeline, a circulating pump located on the ground is provided between the buried pipe and the building heating system, and the outlet of the building heating system is connected to the inlet of the soft water tank through a pipeline.

[0007] Furthermore, the buried pipes are provided in plurality and are connected in parallel with the soft water tank and the building heating system.

[0008] Furthermore, the building heating system is specifically a floor-standing fan-disk radiator.

[0009] Furthermore, the buried pipe is specifically a single U-tube or a double U-tube.

[0010] Furthermore, a pressure reducing valve is provided between the soft water tank and the building heating system for adjusting the flow rate and pressure of the building heating system.

[0011] Furthermore, control valves are provided between the pressure reducing valve and the soft water tank and between the soft water tank and the buried pipe.

[0012] Furthermore, the buried pipe may also be a metal pipe coiled on an auger.

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

[0014] The utility model has the following beneficial effects:

[0015] By starting the circulation pump, the water in the soft water tank is pumped into the buried pipe. Since the buried pipe is buried in the shallow underground layer, in summer, the ground temperature is higher than the underground temperature. The water entering the buried pipe dissipates heat and stores the heat underground. At this time, the water temperature coming out of the buried pipe outlet is lower than the ground temperature. The circulating pump pumps the cold water in the underground buried pipe into the building heating system for summer cooling. The water discharged from the building heating system outlet absorbs heat under the action of the ground temperature and enters the soft water tank. Under the action of the circulation pump, the system causes the water to circulate in the soft water tank, the buried pipe and the building heating system for cooling and absorbing the temperature in the indoor air, and the absorbed temperature is transported to the underground for storage, so as to supplement the heat for the soil source heat pump heating in winter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the overall structure diagram of the utility model;

[0017] Figure 2 This is a structural diagram of Embodiment 1 of the utility model;

[0018] Figure 3 This is a structural diagram of Example 2 of the utility model.

[0019] In the figure: 1. Soft water tank; 2. Underground pipe; 3. Circulation pump; 4. Building heating system; 5. Pressure reducing valve; 6. Control valve; 7. Auger. DETAILED DESCRIPTION

[0020] Embodiment 1:

[0021] See also Figure 1-Figure 2A shallow underground low-temperature refrigeration system comprises a soft water tank 1, a buried pipe 2, a circulating pump 3 and a building heating system 4, wherein the outlet of the soft water tank 1 is connected to the inlet of the buried pipe 2 through a pipeline, the buried pipe 2 is buried in the shallow underground geothermal area, the outlet of the buried pipe 2 is connected to the inlet of the building heating system 4 through a pipeline, a circulating pump 3 located on the ground is arranged between the buried pipe 2 and the building heating system 4, the outlet of the building heating system 4 is connected to the inlet of the soft water tank 1 through a pipeline, a pressure reducing valve 5 is arranged between the soft water tank 1 and the building heating system 4 for adjusting the flow rate and pressure of the building heating system 4, and for adjusting the pressure intensity of the water flow, and a control valve 6 is arranged between the pressure reducing valve 5 and the soft water tank 1 and between the soft water tank 1 and the buried pipe 2.

[0022] There are multiple buried pipes 2 which are connected in parallel with the soft water tank 1 and the building heating system 4 .

[0023] The building heating system 4 is specifically a floor-standing fan-disk radiator.

[0024] The buried pipe 2 is specifically a single U-tube or a double U-tube.

[0025] The working principle of the utility model is as follows: the water in the soft water tank 1 is pumped into the buried pipe 2 by starting the circulation pump 3. Since the buried pipe 2 is buried in the shallow underground layer, in summer, the ground temperature is higher than the underground temperature, and the water entering the buried pipe 2 dissipates heat and stores the heat underground. At this time, the water temperature coming out from the outlet of the buried pipe 2 is lower than the ground temperature, and the circulation pump 3 pumps the water into the building heating system 4 for summer cooling. The building heating system 4 is a floor-standing fan disc radiator. The floor-standing fan disc radiator can adjust the indoor temperature and humidity by supplying and returning air. The water discharged from the outlet of the building heating system 4 absorbs heat under the action of the ground temperature and enters the soft water tank 1; under the action of the circulation pump 3, the system causes the water to circulate in the soft water tank 1, the buried pipe 2 and the building heating system 4, and transports the ground temperature to the underground for storage, so as to supplement the heat for the soil source heat pump heating in winter.

[0026] Embodiment 2:

[0027] See also Figure 3 The buried pipe 2 can also be a metal pipe coiled on the auger 7, the inlet of the metal pipe is connected to the outlet of the soft water tank 1, and the outlet of the metal pipe is connected to the inlet of the building heating system 4. By coiling the metal pipe on the auger 7, there is no need to dig a hole, and the pipe can be buried underground only through the auger 7, which saves time and effort and improves work efficiency.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A refrigeration system utilizing shallow underground low temperature, characterized in that: The invention comprises a soft water tank (1), a buried pipe (2), a circulation pump (3) and a building heating system (4); the outlet of the soft water tank (1) is connected to the inlet of the buried pipe (2) via a pipeline; the buried pipe (2) is buried in a shallow geothermal area underground; the outlet of the buried pipe (2) is connected to the inlet of the building heating system (4) via a pipeline; a circulation pump (3) located on the ground is provided between the buried pipe (2) and the building heating system (4); and the outlet of the building heating system (4) is connected to the inlet of the soft water tank (1) via a pipeline.

2. A refrigeration system utilizing shallow underground low temperature as claimed in claim 1, characterized in that: The buried pipes (2) are provided in plurality and are connected in parallel with the soft water tank (1) and the building heating system (4).

3. A refrigeration system utilizing shallow underground low temperature as claimed in claim 2, characterized in that: The building heating system (4) is specifically a floor-standing fan-disk radiator.

4. A refrigeration system utilizing shallow underground low temperature as claimed in claim 2, characterized in that: The buried pipe (2) is specifically a single U-tube or a double U-tube.

5. The underground shallow low-temperature refrigeration system as claimed in claim 1, characterized in that: A pressure reducing valve (5) for adjusting the flow rate of the building heating system (4) and the pressure of the building heating system (4) is provided between the soft water tank (1) and the building heating system (4).

6. A refrigeration system utilizing shallow underground low temperature as claimed in claim 5, characterized in that: A control valve (6) is provided between the pressure reducing valve (5) and the soft water tank (1), and between the soft water tank (1) and the buried pipe (2).

7. A refrigeration system utilizing shallow underground low temperature as claimed in claim 2, characterized in that: The buried pipe (2) may also be a metal pipe coiled on an auger (7).

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