Use-side unit and refrigeration apparatus

Abstract

To confirm a state of an internal heater arranged inside a drain hose.SOLUTION: The drain pan (50) has a drain port (51) in a bottom surface thereof. The socket (55) extends downward from the drain port (51). The drain hose (60) is connected to the socket (55). The drain hose (60) includes a bent portion (61), a first pipe portion (62) located upstream of the bent portion (61), and a second pipe portion (63) located downstream of the bent portion (61). The internal heater (70) is inserted through the drain port (51), and is disposed inside the socket (55) and the drain hose (60). A tip part of the internal heater (70) is arranged at a position visible from the drain port (51).SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to a user unit and a refrigeration device. [Background technology]

[0002] Patent Document 1 discloses a refrigeration apparatus in which hot gas discharged from a compressor is guided from a hot gas circuit to a drain pan, thereby defrosting the drain pan. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-183037 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the conventional inventions are designed to defrost the drain pan, but there is a risk that the inside of the drain hose extending downward from the drain outlet of the drain pan may not be sufficiently defrosted.

[0005] Therefore, it is conceivable to place an internal heater inside the drain hose to defrost the inside of the drain hose. However, if the drain hose has a bent portion and the tip of the internal heater is placed downstream of the bent portion, the state of the internal heater cannot be confirmed from the outside.

[0006] An object of the present disclosure is to make it possible to check the status of an internal heater disposed inside a drain hose. [Means for solving the problem]

[0007] A first aspect of the present disclosure is a user-side unit comprising: a drain pan (50) having a drain outlet (51) on its bottom surface; a socket portion (55) extending downward from the drain outlet (51); a drain hose (60) connected to the socket portion (55); and an internal heater (70) inserted from the drain outlet (51) and arranged inside the socket portion (55) and the drain hose (60), wherein the drain hose (60) has a bent portion (61), a first pipe portion (62) upstream of the bent portion (61), and a second pipe portion (63) downstream of the bent portion (61), and the tip of the internal heater (70) is arranged in a position visible from the drain outlet (51).

[0008] In the first mode, the entire internal heater (70) can be seen from the drain outlet (51), and the state of the internal heater (70) disposed inside the drain hose (60) can be confirmed.

[0009] A second aspect of the present disclosure is the user side unit of the first aspect, wherein a tip end of the internal heater (70) is disposed inside the first pipe portion (62).

[0010] In the second embodiment, the tip of the internal heater (70) is disposed inside the first pipe portion (62), so that the entire internal heater (70) can be seen from the drain outlet (51).

[0011] A third aspect of the present disclosure is the user unit of the first or second aspect, further comprising a main casing (40) and a cover (45) that is detachable from the main casing (40) and covers the drain port (51).

[0012] In the third aspect, covering the drain outlet (51) with the cover (45) prevents dust from accumulating at the drain outlet (51) and protects the internal heater (70). Moreover, removing the cover (45) allows the entire internal heater (70) to be seen from the drain outlet (51).

[0013] In a fourth aspect of the present disclosure, the user unit of any one of the first to third aspects is suspended from a ceiling surface (42).

[0014] In the fourth aspect, in the ceiling-suspended user-side unit (30), the internal heater (70) can be seen in its entirety from the drain outlet (51).

[0015] A fifth aspect of the present disclosure is a utilization side unit according to any one of the first to fourth aspects, further comprising an external heater (75) arranged outside the drain hose (60), the external heater (75) being arranged at a position opposite the internal heater (70) with the drain hose (60) interposed therebetween.

[0016] In the fifth aspect, the drain hose (60) is heated from the inside and the outside of the drain hose (60) by the internal heater (70) and the external heater (75), thereby improving the defrosting effect.

[0017] A sixth aspect of the present disclosure is the user side unit of the fifth aspect, wherein the external heater (75) is arranged downstream of the first pipe portion (62).

[0018] In the sixth aspect, the external heater (75) can defrost the bent portion (61) and the second pipe portion (63) downstream of the first pipe portion (62).

[0019] A seventh aspect of the present disclosure is the usage-side unit of any one of the first to sixth aspects, wherein the internal heater (70) has a first heating portion (71) inserted into the socket portion (55) and a second heating portion (72) extending from the first heating portion (71) along a bottom surface of the drain pan (50).

[0020] In the seventh aspect, the first heating part (71) can defrost the socket part (55), and the second heating part (72) can defrost the bottom surface of the drain pan (50).

[0021] An eighth aspect of the present disclosure is the utilization side unit of any one of the first to seventh aspects, further comprising a defrosting mechanism (33) arranged along the bottom surface of the drain pan (50).

[0022] In the eighth aspect, the defrosting mechanism (33) can defrost the bottom surface of the drain pan (50).

[0023] A ninth aspect of the present disclosure relates to the user side unit of the eighth aspect, further comprising a fixing member (80) that fixes the internal heater (70), and the fixing member (80) is fixed to the defrosting mechanism (33).

[0024] In the ninth aspect, the internal heater (70) is fixed to the defrosting mechanism (33) by the fixing member (80), thereby eliminating the need to provide a hole in the drain pan (50) for attaching the fixing member (80), thereby improving workability.

[0025] In a tenth aspect of the present disclosure, in the user-side unit of the ninth aspect, the internal heater (70) has a first heating portion (71) inserted into the socket portion (55) and a second heating portion (72) extending from the first heating portion (71) along the bottom surface of the drain pan (50), and the fixing member (80) fixes an end of the second heating portion (72) on the side of the first heating portion (71).

[0026] In the tenth aspect, by fixing the end of the second heating section (72) on the side of the first heating section (71), the second heating section (72) can be brought into close contact with the bottom surface of the drain pan (50), which makes it easier to defrost the area around the drain outlet (51).

[0027] An eleventh aspect of the present disclosure is the user side unit of the tenth aspect, wherein the fixing member (80) fixes an end of the second heating section (72) opposite to the first heating section (71).

[0028] In the eleventh aspect, by fixing the end of the second heating section (72) opposite to the first heating section (71), the entire second heating section (72) can be brought into close contact with the bottom surface of the drain pan (50), which makes it easier to defrost the bottom surface of the drain pan (50).

[0029] A twelfth aspect of the present disclosure is a refrigeration system including a utilization side unit (30) of any one of the first to eleventh aspects, a refrigerant circuit (1a) through which refrigerant that has undergone heat exchange in the utilization side unit (30) flows, and a heat source side unit (10) connected to the refrigerant circuit (1a).

[0030] In a twelfth aspect, a refrigeration system can be provided, including a utilization side unit (30), a refrigerant circuit (1a), and a heat source side unit (10). [Brief explanation of the drawings]

[0031] [Figure 1] FIG. 1 is a refrigerant circuit diagram of a refrigeration device according to this embodiment. [Figure 2] FIG. 2 is a front view showing the configuration of the user-side unit. [Figure 3] FIG. 3 is a perspective view showing the arrangement of an internal heater in the drain pan. [Figure 4] FIG. 4 is a perspective view showing the configuration of the internal heater. [Figure 5] FIG. 5 is a side cross-sectional view showing the arrangement of the internal heater inside the socket and the drain hose. [Figure 6] FIG. 6 is a perspective view showing a state in which the cover is attached to the main body casing. [Figure 7] FIG. 7 is a perspective view showing a state in which the cover is removed from the main body casing. [Figure 8] FIG. 8 is a perspective view showing the configuration of the fixing member. DETAILED DESCRIPTION OF THE INVENTION

[0032] As shown in Fig. 1, the refrigeration system (1) cools the interior of a refrigerator to a predetermined freezing range, for example. The refrigeration system (1) includes a heat source unit (10) as an external unit and a user unit (30) as an internal unit. The heat source unit (10) and the user unit (30) are connected by a liquid-side connecting pipe (2) and a gas-side connecting pipe (3).

[0033] The refrigeration system (1) includes a refrigerant circuit (1a). The refrigerant circuit (1a) switches between a forward cycle cooling operation and a reverse cycle defrosting operation. The refrigerant circuit (1a) is filled with, for example, R410A or R32 as a refrigerant.

[0034] The heat source unit (10) includes a compressor (11), a four-way switching valve (12), a condenser (13), a receiver (14), and a subcooling heat exchanger (20). The compressor (11), the four-way switching valve (12), the condenser (13), the receiver (14), and the subcooling heat exchanger (20) are connected in sequence by a refrigerant pipe (18).

[0035] A first port (P1) of the four-way selector valve (12) is connected to the discharge side of the compressor (11). A second port (P2) of the four-way selector valve (12) is connected to the suction side of the compressor (11). A third port (P3) of the four-way selector valve (12) is connected to one end of the gas side of the condenser (13). A fourth port (P4) of the four-way selector valve (12) is connected to the gas side connecting pipe (3).

[0036] When the refrigerant circuit (1a) performs a cooling operation, the four-way selector valve (12) switches to the state shown by the solid line in Fig. 1. When the refrigerant circuit (1a) performs a defrosting operation, the four-way selector valve (12) switches to the state shown by the dashed line in Fig. 1.

[0037] The condenser (13) is configured, for example, as a cross-fin type fin-and-tube heat exchanger. A heat source side fan (15) blows air into the condenser (13). One end of the condenser (13) is connected to the third port (P3) of the four-way selector valve (12) via a refrigerant pipe (18). The other end of the condenser (13) is connected to the receiver (14) via the refrigerant pipe (18) and a check valve (6).

[0038] The subcooling heat exchanger (20) subcools the liquid refrigerant condensed in the condenser (13). The subcooling heat exchanger (20) includes a primary passage (21) and a secondary passage (22). The inlet end of the primary passage (21) is connected to the receiver (14) via a liquid refrigerant pipe (18). The outlet end of the primary passage (21) is connected to the liquid connection pipe (2) via the liquid refrigerant pipe (18).

[0039] An inlet end of the secondary passage (22) is connected via a branch pipe (23) to the liquid-side refrigerant pipe (18) between the primary passage (21) and the liquid-side connecting pipe (2). An outlet end of the secondary passage (22) is connected via an injection pipe (24) to the refrigerant pipe (18) on the suction side of the compressor (11). A subcooling expansion valve (4) whose opening degree is adjustable is provided in the branch pipe (23).

[0040] The subcooling heat exchanger (20) branches a part of the liquid refrigerant from the condenser (13) into the secondary passage (22) and exchanges heat between the refrigerant flowing through the secondary passage (22) and the refrigerant flowing through the primary passage (21). This cools the liquid refrigerant flowing through the primary passage (21).

[0041] A bypass passage (25) is provided between the condenser (13) and the liquid-side connecting pipe (2). The bypass passage (25) is a passage through which a refrigerant flows during a defrosting operation. One end of the bypass passage (25) is connected to the refrigerant pipe (18) between the branch pipe (23) and the outlet end of the primary passage (21) of the subcooling heat exchanger (20). The other end of the bypass passage (25) is connected to the refrigerant pipe (18) between the condenser (13) and the check valve (6). A defrost expansion valve (5) is provided in the bypass passage (25). The defrost expansion valve (5) is an expansion valve that opens during a defrosting operation and has an adjustable opening degree.

[0042] The utilization side unit (30) includes an evaporator (31), an expansion valve (32), and a drain pan coil (33). The evaporator (31), the expansion valve (32), and the drain pan coil (33) are connected in this order by a refrigerant pipe (18).

[0043] The evaporator (31) is, for example, a cross-fin type fin-and-tube heat exchanger. The user-side fan (35) blows air into the evaporator (31). One end of the evaporator (31) is connected to the gas-side interconnecting pipe (3) via the refrigerant pipe (18). The other end of the evaporator (31) is connected to one end of the drain pan coil (33) via the refrigerant pipe (18).

[0044] The drain pan coil (33) is provided in the drain pan (50) of the evaporator (31) (see FIG. 3). The other end of the drain pan coil (33) is connected to the liquid side connection pipe (2) through the refrigerant pipe (18).

[0045] The expansion valve (32) constitutes an expansion mechanism for reducing the pressure of the refrigerant during cooling operation, and is provided in the refrigerant pipe (18) connecting the evaporator (31) and the drain pan coil (33).

[0046] The refrigerant circuit (1a) is configured by connecting a compressor (11), a four-way switching valve (12), a condenser (13), a receiver (14), and a subcooling heat exchanger (20) of the heat source side unit (10) to an evaporator (31), an expansion valve (32), and a drain pan coil (33) of the utilization side unit (30).

[0047] <Cooling operation> In the cooling operation of the refrigeration system (1), the four-way selector valve (12) is switched to the state shown by the solid line in Fig. 1 to drive the compressor (11), and the defrost expansion valve (5) is closed.

[0048] The refrigerant discharged from the compressor (11) flows through the condenser (13) and condenses into liquid refrigerant. The liquid refrigerant flows through the receiver (14), the primary passage (21) of the subcooling heat exchanger (20), and the liquid refrigerant flows through the liquid refrigerant pipe (18) to the utilization side unit (30).

[0049] A portion of the liquid refrigerant in the refrigerant pipe (18) is decompressed by the subcooling expansion valve (4) and flows through the secondary passage (22) of the subcooling heat exchanger (20), thereby cooling the liquid refrigerant in the primary passage (21) of the subcooling heat exchanger (20).

[0050] On the other hand, the refrigerant that has flowed through the secondary passage (22) returns to the compressor (11). The cooled, supercooled liquid refrigerant flows through the drain pan coil (33), is decompressed by the expansion valve (32), and flows through the evaporator (31). The refrigerant that has flowed through the evaporator (31) evaporates into gas refrigerant and returns to the compressor (11). By repeating this refrigerant circulation, the evaporator (31) cools the air inside the refrigerator.

[0051] <Defrosting operation> In the defrosting operation of the refrigeration system (1), the four-way selector valve (12) is switched to the state shown by the dashed line in Fig. 1 to drive the compressor (11). At this time, the subcooling expansion valve (4) is closed and the defrosting expansion valve (5) is opened.

[0052] The high-temperature refrigerant (hot gas) discharged from the compressor (11) flows through the evaporator (31) and heats the evaporator (31). The refrigerant that has flowed through the evaporator (31) flows through the drain pan coil (33) and heats the drain pan coil (33). The refrigerant that has flowed through the drain pan coil (33) flows through the heat source unit (10), passes through the bypass passage (25), and flows through the condenser (13) and returns to the compressor (11). By repeating this refrigerant circulation, frost adhering to the evaporator (31) and the drain pan coil (33) melts.

[0053] <Internal heater> The drain pan coil (33) is used to defrost the evaporator (31) and the drain pan (50), and there is a risk that the inside of the drain hose (60) extending downward from the drain outlet (51) of the drain pan (50) may not be sufficiently defrosted.

[0054] Therefore, in this embodiment, an internal heater (70) is arranged inside the drain hose (60) to defrost the inside of the drain hose (60).

[0055] Specifically, as shown in FIG. 2, the user unit (30) includes a main casing (40), a cover (45), a drain pan (50), a socket (55), and a drain hose (60).

[0056] The main casing (40) accommodates an evaporator (31), an expansion valve (32), a drain pan coil (33), and a utilization-side fan (35) (see FIG. 1). The main casing (40) is provided with an attachment portion (41). The attachment portion (41) is attached to a ceiling surface (42) with bolts (not shown). This allows the utilization-side unit (30) to be suspended from the ceiling surface (42).

[0057] A maintenance opening (43) is provided in the side surface of the main casing (40) (see FIG. 7). The cover (45) is detachably attached to the side surface of the main casing (40) so as to close the maintenance opening (43). The cover (45) is attached to the main casing (40) with fastening bolts (46). In this way, the drain port (51) is covered with the cover (45).

[0058] As shown in FIG. 3, the drain pan (50) receives drain water generated in the evaporator (31). A drain outlet (51) is provided in the bottom surface of the drain pan (50). A socket (55) extends downward from the drain outlet (51) (see FIG. 2). A drain hose (60) is connected to the socket (55).

[0059] The drain pan coil (33) is disposed along the bottom surface of the drain pan (50). The refrigerant (hot gas) discharged from the compressor (11) flows into the drain pan coil (33). The drain pan coil (33) constitutes a defrosting mechanism that heats the drain pan (50) with the refrigerant to defrost the drain pan (50). Note that, for example, an electric heater may be used as the defrosting mechanism.

[0060] As shown in Fig. 4, the internal heater (70) includes a first heating section (71), a second heating section (72), and a harness section (73). The internal heater (70) is, for example, a belt heater. The internal heater (70) is inserted through the drain outlet (51) and disposed inside the socket section (55) and the drain hose (60) (see Fig. 5).

[0061] 5, the socket (55) and the drain hose (60) are connected by a connecting pipe (56). The drain hose (60) has a bent portion (61), a first pipe portion (62) located upstream of the bent portion (61), and a second pipe portion (63) located downstream of the bent portion (61). The outer peripheral surface of the drain hose (60) is covered with a heat insulating material (57).

[0062] 3, the first heating portion (71) of the internal heater (70) is inserted into the socket portion (55) and the drain hose (60). The second heating portion (72) extends from the first heating portion (71) along the bottom surface of the drain pan (50). The harness portion (73) supplies current, which is supplied from a power source (not shown), to the first heating portion (71) and the second heating portion (72), thereby heating the first heating portion (71) and the second heating portion (72).

[0063] Here, when the drain hose (60) has a bent portion (61), if the tip of the internal heater (70) is located downstream of the bent portion (61), the state of the internal heater (70) cannot be confirmed from the outside.

[0064] Therefore, in this embodiment, the state of the internal heater (70) arranged inside the drain hose (60) can be checked.

[0065] 5, the tip of the internal heater (70) is disposed inside the first pipe portion (62). As a result, the tip of the internal heater (70) is disposed at a position visible from the drain outlet (51). Note that the tip of the internal heater (70) may overlap with part of the bent portion (61) as long as it is visible from the drain outlet (51).

[0066] Specifically, as shown in Fig. 6, the maintenance opening (43) on the side surface of the main casing (40) is opened by removing the cover (45) attached to the main casing (40). As shown in Fig. 7, when the drain outlet (51) is viewed from the maintenance opening (43), the tip of the internal heater (70) can be seen from the drain outlet (51).

[0067] As shown in FIG. 5, an external heater (75) is disposed outside the drain hose (60). The external heater (75) is, for example, a belt heater. The external heater (75) is disposed opposite the internal heater (70) with the drain hose (60) interposed therebetween. The external heater (75) is further disposed downstream of the first pipe portion (62). The external heater (75) may be disposed so as to cover the entire drain hose (60).

[0068] Specifically, the external heater (75) is disposed along the outer surface of the socket portion (55) and the outer surfaces of the first pipe portion (62), the bent portion (61), and the second pipe portion (63) of the drain hose (60). The external heater (75) and the drain hose (60) are covered with the heat insulating material (57).

[0069] As shown in Fig. 8, the internal heater (70) is fixed by a fixing member (80). The fixing member (80) is fixed to the drain pan coil (33). The fixing member (80) has a contact portion (81) and a fitting portion (82).

[0070] The contact portion (81) comes into contact with the upper surface of the internal heater (70). The contact portion (81) and the bottom surface of the drain pan (50) sandwich the internal heater (70), thereby pressing and fixing the internal heater (70).

[0071] The fitting portions (82) are formed in a curved shape corresponding to the cylindrical shape of the drain pan coil (33) so as to fit into the drain pan coil (33). The drain pan coils (33) are arranged on both sides of the internal heater (70). The fitting portions (82) are provided at both ends of the abutting portion (81). The two fitting portions (82) are fitted into the two drain pan coils (33).

[0072] 3, two fixing members (80) are provided. One fixing member (80) fixes an end of the second heating section (72) of the internal heater (70) on the side of the first heating section (71). The other fixing member (80) fixes an end of the second heating section (72) on the opposite side to the first heating section (71).

[0073] -Effects of the embodiment- According to this embodiment, the entire internal heater (70) can be seen from the drain outlet (51), and the state of the internal heater (70) disposed inside the drain hose (60) can be confirmed.

[0074] According to this embodiment, the tip of the internal heater (70) is disposed inside the first pipe portion (62), so that the entire internal heater (70) can be seen from the drain outlet (51).

[0075] According to this embodiment, covering the drain outlet (51) with the cover (45) can prevent dust from accumulating at the drain outlet (51) and protect the internal heater (70). Furthermore, removing the cover (45) allows the entire internal heater (70) to be viewed from the drain outlet (51).

[0076] According to this embodiment, in the ceiling-suspended user-side unit (30), the internal heater (70) can be seen in its entirety from the drain outlet (51).

[0077] According to this embodiment, the drain hose (60) is heated from the inside and the outside of the drain hose (60) by the internal heater (70) and the external heater (75), thereby improving the defrosting effect.

[0078] According to this embodiment, the external heater (75) can defrost the bent portion (61) and the second pipe portion (63) downstream of the first pipe portion (62).

[0079] According to this embodiment, the first heating element (71) can defrost the socket element (55), and the second heating element (72) can defrost the bottom surface of the drain pan (50).

[0080] According to this embodiment, the defrosting mechanism (33) can defrost the bottom surface of the drain pan (50).

[0081] According to this embodiment, the internal heater (70) is fixed to the defrosting mechanism (33) by the fixing member (80), so that it is not necessary to provide a hole in the drain pan (50) for attaching the fixing member (80), thereby improving workability.

[0082] According to this embodiment, by fixing the end of the second heating section (72) on the side of the first heating section (71), the second heating section (72) can be brought into close contact with the bottom surface of the drain pan (50), making it easier to defrost the area around the drain outlet (51).

[0083] According to this embodiment, by fixing the end of the second heating section (72) opposite to the first heating section (71), the entire second heating section (72) can be brought into close contact with the bottom surface of the drain pan (50), making it easier to defrost the bottom surface of the drain pan (50).

[0084] According to this embodiment, it is possible to provide a refrigeration system including a utilization side unit (30), a refrigerant circuit (1a), and a heat source side unit (10).

[0085] Other Embodiments Although the embodiments and modifications have been described above, it will be understood that various modifications in form and detail are possible without departing from the spirit and scope of the claims. Furthermore, elements of the above embodiments, modifications, and other embodiments may be combined or substituted as appropriate. Furthermore, the terms "first," "second," "third," etc. in the specification and claims are used to distinguish between terms to which these terms are attached, and do not limit the number or order of those terms. [Industrial Applicability]

[0086] INDUSTRIAL APPLICABILITY As described above, the present disclosure is useful for utilization side units and refrigeration devices. [Explanation of symbols]

[0087] 1 Refrigeration equipment 1a Refrigerant circuit 10 Heat source unit 30 User unit 33 Drain pan coil (defrosting mechanism) 40 Main casing 42 Ceiling surface 45 Cover 50 Drain pan 51 Drain 55 Socket part 60 Drain hose 61 Bending section 62 First Pipe Section 63 Second Pipe Section 70 Internal heater 71 1st heating section 72 2nd heating section 75 External heater 80 Fixing member

Claims

1. a drain pan (50) having a drain outlet (51) on its bottom surface; a socket portion (55) extending downward from the drain outlet (51); a drain hose (60) connected to the socket portion (55); an internal heater (70) inserted through the drain outlet (51) and disposed inside the socket portion (55) and the drain hose (60); the drain hose (60) has a bent portion (61), a first pipe portion (62) located upstream of the bent portion (61), and a second pipe portion (63) located downstream of the bent portion (61); The tip of the internal heater (70) is positioned so as to be visible from the drain outlet (51). User unit.

2. In the user side unit of claim 1, The tip of the internal heater (70) is disposed inside the first pipe portion (62). User unit.

3. In the user unit of claim 1 or 2, a main body casing (40); a cover (45) that is detachable from the main casing (40) and covers the drain outlet (51); User unit.

4. In the user unit of claim 1 or 2, Suspended from the ceiling (42) User unit.

5. In the user unit of claim 1 or 2, an external heater (75) disposed outside the drain hose (60); The external heater (75) is disposed at a position facing the internal heater (70) with the drain hose (60) interposed therebetween. User unit.

6. In the user side unit of claim 5, The external heater (75) is disposed downstream of the first pipe portion (62). User unit.

7. In the user unit of claim 1 or 2, The internal heater (70) has a first heating portion (71) inserted into the socket portion (55) and a second heating portion (72) extending from the first heating portion (71) along the bottom surface of the drain pan (50). User unit.

8. In the user unit of claim 1 or 2, a defrosting mechanism (33) disposed along the bottom surface of the drain pan (50); User unit.

9. 9. The user side unit according to claim 8, a fixing member (80) for fixing the internal heater (70); The fixed member (80) is fixed to the defrosting mechanism (33). User unit.

10. 10. The user side unit according to claim 9, the internal heater (70) has a first heating portion (71) inserted into the socket portion (55) and a second heating portion (72) extending from the first heating portion (71) along the bottom surface of the drain pan (50), The fixing member (80) fixes an end portion of the second heating section (72) on the side of the first heating section (71). User unit.

11. 11. The user side unit according to claim 10, The fixing member (80) fixes an end of the second heating section (72) on the opposite side to the first heating section (71). User unit.

12. a user side unit (30) according to claim 1 or 2; a refrigerant circuit (1a) through which the refrigerant that has undergone heat exchange in the utilization side unit (30) flows; a heat source unit (10) connected to the refrigerant circuit (1a). Refrigeration equipment.

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